CN101833849A - Device for monitoring daily life of patients in wireless mode - Google Patents
Device for monitoring daily life of patients in wireless mode Download PDFInfo
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- CN101833849A CN101833849A CN200910047549A CN200910047549A CN101833849A CN 101833849 A CN101833849 A CN 101833849A CN 200910047549 A CN200910047549 A CN 200910047549A CN 200910047549 A CN200910047549 A CN 200910047549A CN 101833849 A CN101833849 A CN 101833849A
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Abstract
The invention provides a device for monitoring daily life of patients in a wireless mode, which combines a pressure sensing module, a data management module and a wireless network communication module into a whole by aiming at whole-course nursing and monitoring demands of special patients without self-help skills, such as amentia patients, the mentally handicapped, peromelia patients and the like on the basis of a wireless intelligent sensing communication network based on the Zigbee protocol, and the appearance structure of the device is designed by combining hospital beds, which can meet actual requirements of structures and bearing of different hospital beds. The invention is a real-time bed-leaving sensing device which can completely passively monitor the bed-leaving information of the patients in real time, meets the demand of monitoring the night daily life of the patients and meanwhile protects the individual privacy of monitors. The device can ensure the validity and the reliability of sensing and data processing and can realize the functions of night bed-leaving alarm, monitoring time selection, alarm range setup, alarm information inquiry, information networking management, randomly regulating the number of monitoring facilities and network nodes, and the like.
Description
Technical field
The present invention relates to the embedded radio real-time monitoring system, relate in particular to a kind of based on the device of the embedded radio intelligence under the Zigbee wireless intelligent network agreement from bed sensing apparatus and pressure transducer be combined into.
Background technology
In hospital, social wellfare home, in the care institutions vibrations such as insane asylum or family, need be to some amentias, patient disabled or that do not have a self-care ability guards, this class crowd has certain singularity, be that they have lost part or all of behavior recognition capability or ability to act, can't adopt conventional care method to guard at their said mechanism, i.e. Chang Yong method of calling such as manual call, dial the relief phone, startup relief lamp etc. can't effectively be applied on one's body them, particularly when daily life at night is nursed, the paramedic generally can not stay in patient's room for a long time, but must carry out round-the-clock nursing to them, this contradiction has perplexed care institutions vibrations.
The patients bed nursing method of part care institutions vibrations employing at present, mainly comprise wired manual call such as hand push button is called out, dialing relief, startup relief, these methods are all based on cable network, yet as aforementioned said, these methods can be suitable for for common patient management, but then can't be suitable for for the special populations such as disabled person of mental patient, amentia old man, forfeiture arm.
This special population of disabled person at mental patient, amentia old man, forfeiture arm, current from the bed induction system mainly based on the cable network framework, and the pressure sensing module is set on this framework, utilize the pressure sensing module that monitored object is carried out full passive monitoring management.Mainly there is following shortcoming in this system: the one, and the wiring task is heavy, and construction cost height, all signal wires and power lead all need disposable arranging to finish, and after determining good construction drawing, must settle at one go; The 2nd, equipment is fixing entirely, uses dumbly, and after cable wiring manufacture was finished, the installation position of equipment was also just fixing, and the orientation of berth also fixes thereupon, and mobile if desired berth or change equipment then need all to overhaul again wiring; The 3rd, can't arbitrarily increase or reduce monitoring berth and equipment, if in the ward, need to increase new monitoring berth and equipment, then need rewiring and installation; The 4th, system maintenance cost height, there are problems such as rewiring and installation in system maintenance, so maintenance cost is higher comparatively speaking; The 5th, total system causes patient's room to spread all over circuit based on cable network, and as if aging circuit or by artificial destruction, then system's forfeiture monitoring function causes taking place the monitoring accident.
Summary of the invention
The object of the present invention is to provide a kind of device with wireless mode monitoring patient daily life; it is at amentia; mental disease; the whole process nursing monitoring demand of the especial patient of no self-care ability such as peromelia; based on based on the intelligent wireless sensing communication network under the Zigbee agreement; with the pressure sensing module; data processing module and wireless network communication module are combined as a whole; and design its profile in conjunction with sick bed and construct; can satisfy the actual conditions demand of different sick bed structures and load-bearing; it be a kind of can passive entirely real-time monitor patients from bed information; and satisfy patient's daily life at night and guard; protect simultaneously children under guardianship person's individual privacy in real time from the bed induction installation; this device can be guaranteed the validity and the reliability of sensing and data processing, and can realize reporting to the police from bed night; monitoring period is selected; alarm range is provided with; the warning message inquiry; the information networking management; can increase and decrease functions such as watch-dog and network node arbitrarily.The technical solution used in the present invention is as described below.
A kind of device with wireless mode monitoring patient daily life, form by following module:
The pressure sensing module comprises pressure transducer and corresponding data processing circuit, is responsible for the variation of induction pressure and the sensing data of collecting is sent to data processing module after data processing circuit is handled;
Data processing module comprises MCU and storer, is sent to the cordless communication network module after the data processing of being responsible for the pressure sensing module is transmitted and is responsible for storage data;
Wireless network communication module comprises RF transmit-receive circuit and antenna based on the Zigbee agreement, and the signal of being responsible for data processing module is sent sends to Surveillance center by wireless network;
Communication module comprises serial port circuit, and described communication module links to each other with data processing module, and this device can utilize communication module to link to each other with the external world so that debug described device;
Power module comprises DC power-supply circuit and/or ac power circuit, is responsible for giving described device power supply.
One preferred embodiment in, described device with wireless mode monitoring patient daily life further comprises alarm modules, this module links to each other with data processing module and comprises illuminating circuit and/or phonation circuit, so that the monitoring personnel find the place that this device is installed rapidly.
One preferred embodiment in, described device with wireless mode monitoring patient daily life further comprises reseting module, this module links to each other with data processing module and comprises reset button and reset circuit, so that the monitoring personnel are arranged at original state with this device.
Wherein, described pressure transducer is a stress metal deformation electric resistance sensor, and the data processing circuit in the described pressure sensing module comprises bridge signal Acquisition Circuit, discharge circuit, filtering circuit, temperature-compensation circuit, A/D change-over circuit and linear correction circuit.
By described device as node, and the wireless monitoring network that plurality of nodes and Surveillance center form can be realized following function: described device is installed under one or more cabinet bases of sick bed, the pressure that gravity produced when patient lied on a bed is evenly distributed on each cabinet base, and when patient leaves bed, pressure on the cabinet base will diminish, by detecting and relatively place the pressure transducer change value of pressure of cabinet base, determine whether described change value of pressure surpasses the scope of setting, and determine according to judged result whether patient leaves bed, if leaving the form of then installing by luminous and sounding type reports to the police, judged result sends to Surveillance center with relevant information by the radio sensing network based on Zigbee communication protocol simultaneously, the monitoring personnel that are positioned at Surveillance center can be according to arrive in the very nick of time correct position and processing of the information that transmits, and this processing comprises by the reset button on the device makes device reply the initialization state.
By several described devices as node and a Surveillance center as control center, said apparatus can be formed a wireless monitoring network, the working frequency range of this network is 2.4GHz, totally 16 transmission channels, the network data transmission rate is lower than 250Kbps, accessible point-to-point transmission distance is 350 meters, and 128 AES encryption technologies are adopted in the transmission of data in the network.The packet size is 8 bytes in this network, and the form of packet comprises lead code, address, data type, valid data load, five parts of check code.The less radio-frequency access module communication protocol stack that this network node adopts comprises Physical layer (PHY) agreement, data link layer medium Access Control (MAC) layer protocol, Routing Protocol, network topology control protocol, transport layer protocol and the application layer protocol of compatible Zigbee agreement, the Physical layer of corresponding OSI network model, data link layer, network layer, transport layer, session layer, presentation layer and application layer.Wherein, Physical layer (PHY) adopts DSSS direct sequence spread spectrum modulation technique, and the MAC layer adopts the CSMA agreement, and the network topology structure control algolithm adopts low power consumption adaptive sub-clustering algorithm (LEACH), and Routing Protocol adopts the broadcast mode based on the information source tree.But described wireless monitoring network settings are the adaptive wireless networking, and data communication is set to adopt point-to-point or the point-to-multipoint mode, and each node all has network routing function, so this network can freely increase and decrease node device.
In order to improve the higher reliability of wireless monitoring network, can according to actual conditions add relay router at network blind spot place so that data can be more unimpeded transmission.
In order to reduce the packet loss of wireless monitoring network data communication, the nearest transistroute mode of node transmission The data search is transmitted, and when bust this, will store the data wait after 10 seconds, and request sends once more, till communicating by letter successfully.
More specifically, each device can set pressure changes between alarm range, sensitive volume, type of alarm and working time, for example utilize daemon software be provided with the pressure alarm time for night to morning; Each node adopts the IP address to carry out the address assignment management, and each node has unique IP address; Described device can be communicated by letter with extraneous by the RS232 serial ports, and this serial ports removes can carry out system debug and program setting, for example changes alarm range and equipment task time etc. by RS232 serial port setting pressure.
More specifically, the poll mode that combines with the real-time interrupt warning is adopted in described wireless monitoring network management, carry out the maintenance and management of node by polling mode, and when reporting to the police appears in a certain node, to provide warning message in real time by interrupt mode, simultaneously warning message is stored in the storer and in the background network management software, so that inquiry.
More specifically, the frequency acquisition of the pressure transducer in the described device be per minute once, if warning message, then upwards report in time, if warning message do not occur, equipment does not send any information, and be in dormant state, per ten minutes interior nodes of poll one secondary home network of while Surveillance center, the relevant polling requirement poll pattern of node answer in time and report Surveillance center not only greatly reduces the power consumption from the bed sensing apparatus, also reduce simultaneously the transmission quantity of network data, reduced the data packet loss, improved the communication quality of network.
A kind of device with wireless mode monitoring patient daily life, comprise body, wherein, one pressure transducer embeds an end of body, one control circuit board that comprises some circuit and module is located at the distal-most end of the described pressure transducer of body interior distance, described control circuit board is provided with data processing circuit, described pressure sensor senses to data after data processing circuit is handled, be sent to data processing module; Data processing module on the described control circuit board comprises MCU and storer, is sent to the cordless communication network module after the data processing of being responsible for the pressure sensing module is transmitted and is responsible for storage data; Wireless network communication module on the described control circuit board comprises RF transmit-receive circuit and antenna based on the Zigbee agreement, and the data of being responsible for data processing module is sent send to Surveillance center by wireless network; Communication module on the described control circuit board comprises serial port circuit, and described communication module links to each other with data processing module, and this device can utilize communication module to link to each other with the external world so that debug described device; Power module on the described control circuit board comprises DC power-supply circuit and/or ac power circuit, is responsible for giving described device power supply.
Wherein, the stress surface of described pressure transducer is positioned at the surface of body, and described stress surface top is provided with a snare tube.
Wherein, described antenna be located at body away from an end of described pressure transducer.
Below only technical scheme of the present invention has been done recapitulative description, the technical characterictic in the technical solutions according to the invention is asked for an interview the description among the following embodiment.
Description of drawings
Fig. 1 is a kind of external structure synoptic diagram of monitoring the device of patient's daily life with wireless mode among the present invention;
Fig. 2 is a kind of internal circuit theory diagram of monitoring the device of patient's daily life with wireless mode among the present invention;
Fig. 3 is a kind of alerting signal processing flow chart of monitoring the device of patient's daily life with wireless mode among the present invention;
Fig. 4 is that processing flow chart is removed in a kind of warning of monitoring the device of patient's daily life with wireless mode among the present invention;
Fig. 5 is the process flow diagram of a kind of Surveillance center's management devices of the device with wireless mode monitoring patient daily life among the present invention;
Main symbol implication:
1, body 2, pressure transducer
3, sleeve 4, control circuit board
5, antenna 6, cabinet base
7, reset button 8, LED light and voice guard
11, upper surface 21, stress surface
41, data processing circuit 42, data processing module
43, cordless communication network module 44, communication module
45, power module 46, reset circuit
Embodiment
Now according to accompanying drawing, the present invention will be further described.
Embodiment
A kind of device with wireless mode monitoring patient daily life provided by the present invention is asked for an interview Figure 1 and Figure 2.For the ease of understanding, in Fig. 1, only showed a part of assembly of described device, described device with wireless mode monitoring patient daily life comprises body 1, pressure transducer 2, sleeve 3, control circuit board 4 and antenna 5.Wherein body 1 is a kind of metal rigid container, pressure transducer 2 is installed on the upper surface of body 1 in the mode that embeds, the stress surface 21 of pressure transducer 2 maintains an equal level with the upper surface of described body 1 11, above the upper surface 11 of body 1, be provided with a snare tube 3 around described stress surface 21, control circuit board 4 is placed in the inside of body 1, and control circuit board 4 is arranged at an end far away as far as possible apart from pressure transducer 2, antenna 4 is located at upper surface 11 tops of body 1 and away from described pressure transducer 2, wherein, be connected by circuit between described pressure transducer and the described control circuit board 4, be connected by circuit between described God's punishment 5 and the described control circuit board 4.See also Fig. 2 below, this figure has mainly showed assembly and circuit on the control circuit board and the module that does not occur in the partial graph 1, described control circuit board 4 is provided with data processing circuit 41, and its sensing data that pressure transducer 2 is collected that links to each other with described pressure transducer 2 carries out being sent to data processing module 42 after certain processing; Data processing module 42 on the described control circuit board 4, mainly comprise MCU and storer, be sent to cordless communication network module 43 after the data processing that it is responsible for data processing circuit is transmitted and be responsible for storage data, the MCU that adopts in the present embodiment adopts 16 MSP430F133 processors, and comprises the Flash storer of 64k and the Ram of 8k; Wireless network communication module 43 on the described control circuit board 4 is based on the rf chip and the peripheral circuit of Zigbee agreement, it is responsible for the data that data processing module 42 sends are sent to Surveillance center by wireless network, and the rf chip based on the Zigbee agreement that present embodiment adopts is CC2430; Communication module 44 on the described control circuit board 4 comprises string RS-232 serial ports and peripheral circuit, and described communication module 44 links to each other with data processing module 42, and this device can utilize the RS232 serial ports to link to each other with the external world so that debug described device; Power module 45 on the described control circuit board 4 comprises DC power-supply circuit, gives described device power supply by the direct supply of 9-30V; Also be provided with reset circuit 46 on the described control circuit board 4, described reset circuit 46 links to each other with described data processing module 42, a reset button 7 in addition that links to each other with reset circuit 46, the surface one that described reset button 7 is located at body 1 is difficult for the touched position of arriving; Also be provided with LED light and voice guard 8 on the described body 1, it links to each other with data processing module 42, sends corresponding warning so that receive from the instruction of data processing module 42.Described antenna 5 links to each other with wireless network communication module 43.
Wherein, described data processing circuit comprises bridge signal Acquisition Circuit, discharge circuit, filtering circuit, temperature-compensation circuit, A/D change-over circuit and linear correction circuit, and they can be done corresponding processing to the data that receive and handle so that data are delivered to data processing module 42.
By described device as node, and the wireless monitoring network that plurality of nodes and Surveillance center form can be realized following function: described device is installed in one or more cabinet bases 6 times of sick bed, the stress surface 21 of described pressure transducer 2 and the bottom surface uniform contact of described cabinet base 6, so the pressure that gravity produced when patient lied on a bed is evenly distributed on each cabinet base 6, the pressure of cabinet base 6 can obtain an accurate numerical value by sensing by pressure transducer 2, and when patient leaves bed, pressure on the cabinet base 6 will diminish, by detecting and relatively place the change value of pressure of the pressure transducer 2 of cabinet base 6, determine whether described change value of pressure surpasses a scope of setting, and determine according to judged result whether patient leaves bed, if leaving the form of then installing by luminous and sounding type reports to the police, judged result sends to Surveillance center with relevant information by the radio sensing network based on Zigbee communication protocol simultaneously, the monitoring personnel that are positioned at Surveillance center can be according to arrive in the very nick of time correct position and processing of the information that transmits, and this processing comprises by make device reply the initialization state by the reset button on the lower device 7.
The design feature of described device is that the top of body 1 is provided with stainless steel metal sleeve 3, cabinet base 6 is enclosed within the sleeve 3 fully, because the fixing of sleeve 3 arranged, this device is difficult for breaking away from for 6 times from cabinet base, guaranteed that device contacts with the effective of cabinet base 6, and, thereby the stress surface 21 of pressure transducer 2 is in the below of cabinet base 6 fully and keeps closely contacting uniformly making all pressure from cabinet base all can be transmitted on the stress surface 21 of pressure transducer 2 with cabinet base 6, above-mentioned method for designing effectively and has cleverly solved the Unit Installation problem, control circuit board 4 is installed on body 1 apart from a pressure transducer side farthest with antenna 5 in addition, module on the control circuit board 4 and circuit and antenna 5 are not subjected to coming from the electromagnetic interference (EMI) of pressure transducer 2 substantially like this, make device more reliable and stable, communication quality is higher.
By several described devices as node and a Surveillance center as control center, said apparatus can be formed a wireless monitoring network, the working frequency range of this network is 2.4GHz, totally 16 transmission channels, the network data transmission rate is lower than 250Kbps, accessible point-to-point transmission distance is 350 meters, and 128 AES encryption technologies are adopted in the transmission of data in the network.The packet size is 8 bytes in this network, and the form of packet comprises lead code, address, data type, valid data load, five parts of check code.The less radio-frequency access module communication protocol stack that this network node adopts comprises Physical layer (PHY) agreement, data link layer medium Access Control (MAC) layer protocol, Routing Protocol, network topology control protocol, transport layer protocol and the application layer protocol of compatible Zigbee agreement, the Physical layer of corresponding OSI network model, data link layer, network layer, transport layer, session layer, presentation layer and application layer.Wherein, Physical layer (PHY) adopts DSSS direct sequence spread spectrum modulation technique, and the MAC layer adopts the CSMA agreement, and the network topology structure control algolithm adopts low power consumption adaptive sub-clustering algorithm (LEACH), and Routing Protocol adopts the broadcast mode based on the information source tree.But described wireless monitoring network settings are the adaptive wireless networking, and data communication is set to adopt point-to-point or the point-to-multipoint mode, and each node all has network routing function, so this network can freely increase and decrease node device.
In order to improve the higher reliability of wireless monitoring network, can according to actual conditions add relay router at network blind spot place so that data can be more unimpeded transmission.In order to reduce the packet loss of wireless monitoring network data communication, the nearest transistroute mode of node transmission The data search is transmitted, and when bust this, will store the data wait after 10 seconds, and request sends once more, till communicating by letter successfully.More specifically, each device can set pressure changes between alarm range, sensitive volume, type of alarm and working time, for example utilize daemon software be provided with the pressure alarm time for night to morning; Each node adopts the IP address to carry out the address assignment management, and each node has unique IP address; Described device can be communicated by letter with extraneous by the RS232 serial ports, and this serial ports removes can carry out system debug and program setting, for example changes alarm range and equipment task time etc. by RS232 serial port setting pressure.More specifically, the poll mode that combines with the real-time interrupt warning is adopted in described wireless monitoring network management, carry out the maintenance and management of node by polling mode, and when reporting to the police appears in a certain node, to provide warning message in real time by interrupt mode, simultaneously warning message is stored in the storer and in the background network management software, so that inquiry.More specifically, the frequency acquisition of the pressure transducer in the described device be per minute once, if warning message, then upwards report in time, if warning message do not occur, equipment does not send any information, and be in dormant state, per ten minutes interior nodes of poll one secondary home network of while Surveillance center, the relevant polling requirement poll pattern of node answer in time and report Surveillance center not only greatly reduces the power consumption from the bed sensing apparatus, also reduce simultaneously the transmission quantity of network data, reduced the data packet loss, improved the communication quality of network.
Thereby described device experience pressure change the process flow diagram give the alarm ask for an interview shown in Figure 3,
Ask for an interview step 101, enter init state after the described device energized;
Ask for an interview step 102, at first the pressure data of gathering from cabinet base 6 by described pressure transducer 2;
The pressure range of the memory storage that the MCU in the step 104, data processing module 42 is interior with the data that receive and data processing module 42 compares;
Described device receive the treatment scheme after the alarm ask for an interview shown in Figure 4,
Step 202 has produced the reset interrupt request after the reset button 7 of device is pressed, show device by manual operation, has produced the high level interrupt of hardware requirement;
The make an immediate response interrupt request of hardware of step 203, described data processing module 42, and this device of initialization empty the data in the storer;
Can step 210 if install when not detecting button hardware reset interrupt request, be then judged receive the wireless communication data, if can not receive, then returns the state that step 201 continues to intercept each device of local network, as if receiving, then forwards next step to;
Step 211 if can receive the Local wireless network communication data, judges then whether the communication handshake request that the other side sends is Local wireless network, if not, then return the state that step 201 continues to intercept each device of local network, if then forward next step to;
Step 212 is that the device of Local wireless network sends if this device is judged communication handshake request that the other side sends, then shakes hands with the other side's foundation; If it is unsuccessful that shake hands this moment, then install storage data and in storer, also continue to wait for that the other side sends the communication handshake request; If shake hands successfully, then forward next step to;
Step 213 is shaken hands successfully if this device and the other side set up, and then receives the data from the other side, and after the reception data finished, this device of initialization emptied the data in the storer, and data processing module 42 is closed LED light and voice guard 8 immediately, returns and continues to intercept.
The processing flow chart that each device of Surveillance center's inquiry responds in the described wireless monitor network is asked for an interview shown in Figure 5,
Step 304 comes from the Surveillance center of Local wireless network if device is judged these wireless communication data, then sets up communication handshake, and communication handshake is not set up, and then stores data and continues and continue to intercept;
After step 307, device receive data and finish, according to the command request that Surveillance center sends, should ask mutually, this request comprises whether the pressure limit that the present state of device, device sense is normal, whether device can shake hands with other device foundation;
Step 308 after the device respective request finishes, according to the state of device self, is gone back the result transmission;
Above description and accompanying drawing have been represented the preferred embodiments of the present invention.Be appreciated that various increases, distortion and replacement all should be comprised within protection scope of the present invention under the condition that does not deviate from by the spirit and scope of the defined principle of the present invention of claims.
Claims (11)
1. device with wireless mode monitoring patient daily life, form by following module:
The pressure sensing module comprises pressure transducer and corresponding data processing circuit, is responsible for the variation of induction pressure and the sensing data of collecting is sent to data processing module after data processing circuit is handled;
Data processing module comprises MCU and storer, is sent to the cordless communication network module after the data processing of being responsible for the pressure sensing module is transmitted and is responsible for storage data;
Wireless network communication module comprises RF transmit-receive circuit and antenna based on the Zigbee agreement, and the signal of being responsible for data processing module is sent sends to Surveillance center by wireless intelligent network;
Communication module comprises serial port circuit, and described communication module links to each other with data processing module, and this device can utilize communication module to link to each other with the external world so that debug described device;
Power module comprises DC power-supply circuit and/or ac power circuit, is responsible for giving described device power supply.
2. device as claimed in claim 1 is characterized in that, described device with wireless mode monitoring patient daily life further comprises alarm modules, and this module links to each other with data processing module and comprises illuminating circuit and/or phonation circuit.
3. device as claimed in claim 1 or 2 is characterized in that, described device with wireless mode monitoring patient daily life further comprises reseting module, and this module links to each other with data processing module and comprises reset button and reset circuit.
4. device as claimed in claim 3, it is characterized in that, described pressure transducer is a stress metal deformation electric resistance sensor, and the data processing circuit in the described pressure sensing module comprises bridge signal Acquisition Circuit, discharge circuit, filtering circuit, temperature-compensation circuit, A/D change-over circuit and linear correction circuit.
5. device as claimed in claim 1, it is characterized in that, by several described devices as node and a Surveillance center as control center, said apparatus can be formed a wireless monitoring network, the working frequency range of this network is 2.4GHz, totally 16 transmission channels, and the network data transmission rate is lower than 250Kbps, accessible point-to-point transmission distance is 350 meters, and 128 AES encryption technologies are adopted in the transmission of data in the network; The packet size is 8 bytes in this network, and the form of packet comprises lead code, address, data type, valid data load, five parts of check code; The less radio-frequency access module communication protocol stack that this network node adopts comprises the physical layer protocol of compatible Zigbee agreement, the data link layer medium access control layer protocol, Routing Protocol, the network topology control protocol, transport layer protocol and application layer protocol, the Physical layer of corresponding OSI network model, data link layer, network layer, transport layer, session layer, presentation layer and application layer, wherein, Physical layer adopts DSSS direct sequence spread spectrum modulation technique, the MAC layer adopts the CSMA agreement, the network topology structure control algolithm adopts low power consumption adaptive sub-clustering algorithm, and Routing Protocol adopts the broadcast mode based on the information source tree.But described wireless monitoring network settings are the adaptive wireless networking, and data communication is set to adopt point-to-point or the point-to-multipoint mode, and each node all has network routing function, so this wireless monitoring network can freely increase and decrease node device.
6. device as claimed in claim 5 is characterized in that, in order to improve the higher reliability of wireless monitoring network, can according to actual conditions add relay router at network blind spot place so that data can be more unimpeded transmission.
7. device as claimed in claim 5, it is characterized in that, in order to reduce the packet loss of wireless monitoring network data communication, the nearest transistroute mode of node transmission The data search is transmitted, and when bust this, to store the data wait after ten seconds, request sends once more, till communicating by letter successfully.
8. device as claimed in claim 5 is characterized in that, each device can set pressure changes between alarm range, sensitive volume, type of alarm and working time; Each node adopts the IP address to carry out the address assignment management, and each node has unique IP address; Described device can be communicated by letter with extraneous by serial ports.
9. device as claimed in claim 5, it is characterized in that, the poll mode that combines with the real-time interrupt warning is adopted in described wireless monitoring network management, carry out the maintenance and management of node by polling mode, and when reporting to the police appears in a certain node, to provide warning message in real time by interrupt mode, warning message is stored in the storer simultaneously.
10. device as claimed in claim 5, it is characterized in that, the frequency acquisition of the pressure transducer in the described device be per minute once, if warning message, then upwards report in time, if warning message do not occur, equipment does not send any information, and be in dormant state, the node in per ten minutes poll one secondary home network of Surveillance center simultaneously.
11. as device as described in the claim 5, it is characterized in that, described device adopts to be measured sick bed pressure and changes and judges patient from the bed state, the full daily life situation of monitor patients passively, and will detect information by described wireless monitoring network and send to Surveillance center in real time.
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| CN108814615A (en) * | 2018-04-12 | 2018-11-16 | 东软熙康阿尔卑斯（沈阳）科技有限公司 | One kind is in bed monitoring device and method |
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