CN101893646A - Waterlog comprehensive testing system and waterlog comprehensive testing platform thereof - Google Patents
Waterlog comprehensive testing system and waterlog comprehensive testing platform thereof Download PDFInfo
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- CN101893646A CN101893646A CN 201010207426 CN201010207426A CN101893646A CN 101893646 A CN101893646 A CN 101893646A CN 201010207426 CN201010207426 CN 201010207426 CN 201010207426 A CN201010207426 A CN 201010207426A CN 101893646 A CN101893646 A CN 101893646A
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Abstract
The invention discloses a waterlog comprehensive testing system and a waterlog comprehensive testing platform thereof. The waterlog comprehensive testing system consists of a sensor property testing unit, a circuit board voltage and linearity testing unit, a circuit board static pressurization testing unit, a waterlog communication signal testing unit, a waterlog power supply adaptability testing unit, a microprocessor and a computer. The upper case body of the waterlog comprehensive testing platform is provided with a gas valve switch, a waterlog testing passage, a waveband switch, a toggle switch, a voltage indicating lamp and an interface connector from left to right in sequence; and the top panel of a middle case body is provided with a motion axis tool, a sensor testing tool and a waterlog circuit board tool. The system is a set of testing equipment for detecting the performance state and the delivery inspection in a waterlog production process, and has the advantages of ensuring product quality and high automation degree, improving the efficiency of product inspection, possibly reducing human operation and detection errors, and effectively avoiding inspection errors caused by objective factors of humans.
Description
Technical field
The present invention relates to testing apparatus, especially relate to a kind of navigational speed measuring instrument integrated test system and navigational speed measuring instrument combined test stand thereof that collects the electromechanical integration of sensor application technology, microcontroller technology.
Background technology
The factory inspection of navigational speed measuring instrument from the production testing of parts to product has numerous test items, the data message amount is big, statistics, analysis, calculation of complex, strict to the reviewer, only depend on manually and finish, inefficiency but also uncontrollable by the artificial check that subjective factor brought erroneous judgement not only, product quality can not get ensureing.
Summary of the invention
First purpose of the present invention is to provide a kind of can guarantee product quality, automaticity height, improve examination and test of products efficient, reduce manually-operated and detect error, avoid error-checking navigational speed measuring instrument integrated test system that subjective factor brought by the people effectively as far as possible.
Second purpose of the present invention is to provide a kind of navigational speed measuring instrument combined test stand of using integrated test system.
First purpose of the present invention is achieved in that
A kind of navigational speed measuring instrument integrated test system, feature is made up of sensor characteristic detecting unit, circuit board voltage and linearity test unit, the static pressurization of circuit board detecting unit, navigational speed measuring instrument communication signal detecting unit, navigational speed measuring instrument power adaptation detecting unit, microprocessor and computing machine, wherein:
The sensor characteristic detecting unit is by the constant voltage driving source, pneumatic supply, dynamic pressure transducer, sensor signal is amplified, filtering circuit and sensor characteristic analog to digital conversion circuit are formed, pneumatic supply is through air intake opening, gas circuit divider in the casing of navigational speed measuring instrument combined test stand, air valve switch is delivered to the sensor frock, the lead-in wire of dynamic pressure transducer is connected to by the crocodile clip on the sensor passage of seven cores on the circuit board in the casing of navigational speed measuring instrument combined test stand, the constant voltage driving source provides constant voltage to dynamic pressure transducer, dynamic pressure transducer is under the pressure effect of the gas of pneumatic supply output, the electric signal that pressure transducer output is faint, faint electric signal amplifies through sensor signal amplification filtering circuit, after the Filtering Processing, by the sensor characteristic analog to digital conversion circuit analog signal conversion is become digital signal, being sent to microprocessor handles, data after microprocessor will be handled are sent to computer-solution by interface circuit, according to the result who resolves, characterisitic parameter (the linearity of the automatic determine sensor of computing machine, hysteresis, repeatability) whether qualified, and generate examining report;
Circuit board voltage and linearity test unit are by the navigational speed measuring instrument circuit board, relay, voltage conversion circuit, 8 select 1 analog switch and voltage and linear analog to digital conversion circuit to form, the navigational speed measuring instrument circuit board is put into the navigational speed measuring instrument circuit board tool, the external cable of navigational speed measuring instrument circuit board inserts the navigational speed measuring instrument test channel of seven cores, the operating voltage of navigational speed measuring instrument circuit board is connected to by the navigational speed measuring instrument circuit board tool on the circuit board in the casing of navigational speed measuring instrument combined test stand, operating voltage on the navigational speed measuring instrument circuit board is after voltage conversion circuit carries out voltage transitions, select 1 analog switch by 8 again, by voltage and linear analog to digital conversion circuit analog signal conversion is become digital signal, being sent to microprocessor handles, microprocessor detects the voltage of key point on the navigational speed measuring instrument circuit board one by one, to detect data and be sent to computing machine by interface circuit, computing machine judges that automatically whether qualified the voltage of navigational speed measuring instrument elements on circuit board is; Simultaneously by the microprocessor pilot relay, for the navigational speed measuring instrument circuit board provides the simulation millivolt signal, millivolt signal is after the navigational speed measuring instrument circuit board is handled, return to voltage conversion circuit and carry out voltage transitions once more, select 1 analog switch by 8 again, by voltage and linear analog to digital conversion circuit analog signal conversion is become digital signal, being sent to microprocessor handles, data after microprocessor will be handled are sent to computer-solution, whether the linearity of judging the navigational speed measuring instrument circuit board meets the demands, and judge the whether qualified of navigational speed measuring instrument circuit board component automatically, generate examining report;
The static pressurization of circuit board detecting unit is by pneumatic supply, dynamic pressure transducer and navigational speed measuring instrument circuit board are formed, the sensor and the navigational speed measuring instrument circuit board that have encapsulated are connected, be fixed on the kinematic axis frock, the external cable of navigational speed measuring instrument circuit board inserts the navigational speed measuring instrument test channel of seven cores, pneumatic supply applies different normal pressures to dynamic pressure transducer earlier, dynamic pressure transducer is under the effect of gaseous tension, convert gaseous tension to faint electric signal, faint electric signal is after the navigational speed measuring instrument circuit board is handled, being sent to microprocessor handles, data after microprocessor will be handled are sent to computer-solution by interface circuit, according to the result who resolves, computing machine judges automatically whether the linearity of dynamic pressure transducer is qualified, and generates examining report;
Navigational speed measuring instrument communication signal detecting unit selects 1 analog switch, RS422 to change the S232 interface circuit by navigational speed measuring instrument circuit board, two 4 and the RS232 interface circuit is formed, select 1 analog switch by microprocessor control two 4, change the S232 interface circuit by RS232 interface circuit and RS422 respectively navigational speed measuring instrument circuit board RS232 signal of exporting and the RS422 signal that converts the RS232 signal to are sent to computing machine respectively, computing machine is with the data parsing of reading in, and whether the decision data output format is correct automatically;
Navigational speed measuring instrument power adaptation detecting unit is by the navigational speed measuring instrument circuit board, power-switching circuit, rotary switch and power light lamp are formed, the external cable of navigational speed measuring instrument circuit board is inserted seven core supply sockets of 50 paths, toggle switch on the front panel of switching upper box, 9v is provided for the navigational speed measuring instrument circuit board respectively, 24v, the 36v power supply, power supply switches the corresponding voltage indicator lamp in back, navigational speed measuring instrument circuit board output data is directly to computing machine, computing machine is with the data parsing of reading in, pass through rotary switch, can pursue test the data output of 50 navigational speed measuring instruments under different operating voltage, and with the data under different operating voltage output by to test, and generate examining report.
Second purpose of the present invention is achieved in that
A kind of navigational speed measuring instrument combined test stand, comprise the casing of forming by upper box, middle casing and lower box and be positioned over circuit board in the casing, on middle casing and lower box, be respectively equipped with middle cabinet door and the lower box door split, power control switch, system power supply switch, testing power supply switch and 220V supply socket are installed on the right plate of casing, and feature is that navigational speed measuring instrument test channel, waver, toggle switch, the voltage indicator lamp of air valve switch, seven cores and the data line socket that is connected with computing machine are installed on the front panel of upper box from left to right successively; Middle part, a left side at the top panel of middle casing is equipped with kinematic axis frock, sensor frock and navigational speed measuring instrument circuit board tool, at the sensor passage that seven cores each side are installed and the build-out resistor slot of sensor frock, navigational speed measuring instrument electric connector short-circuit detecting socket is installed between adjacent two navigational speed measuring instrument circuit board tool; On the right plate of casing air intake opening is installed, air intake opening is communicated with air valve switch.
Seven core supply sockets of 50 paths also are installed on the right plate of casing.
Right part at the top panel of middle casing is placed with computing machine.
The present invention is that a cover is used for monitoring the navigational speed measuring instrument performance state in process of production and the testing apparatus of factory inspection, it can be under unified test condition and parameter, finish the detection of the production run of navigational speed measuring instrument and the check that finished product dispatches from the factory, and according to detecting data product is carried out qualification determination objectively automatically.Therefore, the present invention has and can guarantee product quality, automaticity height, improves examination and test of products efficient, reduces manually-operated as far as possible and detect error, avoids error-checking advantage that subjective factor brought by the people effectively.
Description of drawings
Fig. 1 is a theory diagram of the present invention;
Fig. 2 is the theory diagram of sensor characteristic detecting unit;
Fig. 3 is the theory diagram of circuit board voltage and linearity test unit;
Fig. 4 is the theory diagram of the static pressurization of circuit board detecting unit;
Fig. 5 is the theory diagram of navigational speed measuring instrument communication signal detecting unit;
Fig. 6 is the theory diagram of navigational speed measuring instrument power adaptation detecting unit;
Fig. 7 is the structural representation of navigational speed measuring instrument combined test stand.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the present invention is described in further detail.
A kind of navigational speed measuring instrument integrated test system, feature is made up of sensor characteristic detecting unit, circuit board voltage and linearity test unit, the static pressurization of circuit board detecting unit, navigational speed measuring instrument communication signal detecting unit, navigational speed measuring instrument power adaptation detecting unit, microprocessor and computing machine, wherein:
The sensor characteristic detecting unit is by the constant voltage driving source, pneumatic supply, dynamic pressure transducer, sensor signal amplification filtering circuit and sensor characteristic analog to digital conversion circuit are formed, pneumatic supply is through air intake opening 13, gas circuit divider in the casing 1 of navigational speed measuring instrument combined test stand, air valve switch 24 is delivered to sensor frock 3, the lead-in wire of dynamic pressure transducer is connected to by the crocodile clip on the sensor passage 23 of seven cores on the circuit board in the casing 1 of navigational speed measuring instrument combined test stand, the constant voltage driving source provides constant voltage to dynamic pressure transducer, dynamic pressure transducer is under the pressure effect of the gas of pneumatic supply output, the electric signal that pressure transducer output is faint, faint electric signal amplifies through sensor signal amplification filtering circuit, after the Filtering Processing, by the sensor characteristic analog to digital conversion circuit analog signal conversion is become digital signal, being sent to microprocessor handles, data after microprocessor will be handled are sent to computer-solution by interface circuit, according to the result who resolves, characterisitic parameter (the linearity of the automatic determine sensor of computing machine, hysteresis, repeatability) whether qualified, and generate examining report;
Circuit board voltage and linearity test unit are by the navigational speed measuring instrument circuit board, relay, voltage conversion circuit, 8 select 1 analog switch and voltage and linear analog to digital conversion circuit to form, the navigational speed measuring instrument circuit board is put into navigational speed measuring instrument circuit board tool 4, the external cable of navigational speed measuring instrument circuit board inserts the navigational speed measuring instrument test channel 22 of seven cores, the operating voltage of navigational speed measuring instrument circuit board is connected to by navigational speed measuring instrument circuit board tool 4 on the circuit board in the casing 1 of navigational speed measuring instrument combined test stand, operating voltage on the navigational speed measuring instrument circuit board is after voltage conversion circuit carries out voltage transitions, select 1 analog switch by 8 again, by voltage and linear analog to digital conversion circuit analog signal conversion is become digital signal, being sent to microprocessor handles, microprocessor detects the voltage of key point on the navigational speed measuring instrument circuit board one by one, to detect data and be sent to computing machine by interface circuit, computing machine judges that automatically whether qualified the voltage of navigational speed measuring instrument elements on circuit board is; Simultaneously by the microprocessor pilot relay, for the navigational speed measuring instrument circuit board provides the simulation millivolt signal, millivolt signal is after the navigational speed measuring instrument circuit board is handled, return to voltage conversion circuit and carry out voltage transitions once more, select 1 analog switch by 8 again, by voltage and linear analog to digital conversion circuit analog signal conversion is become digital signal, being sent to microprocessor handles, data after microprocessor will be handled are sent to computer-solution, whether the linearity of judging the navigational speed measuring instrument circuit board meets the demands, and judge that automatically whether qualified the navigational speed measuring instrument circuit board assemblies is, generate examining report;
The static pressurization of circuit board detecting unit is by pneumatic supply, dynamic pressure transducer and navigational speed measuring instrument circuit board are formed, the sensor and the navigational speed measuring instrument circuit board that have encapsulated are connected, be fixed on the kinematic axis frock 2, the external cable of navigational speed measuring instrument circuit board inserts the navigational speed measuring instrument test channel 22 of seven cores, pneumatic supply applies different normal pressures to dynamic pressure transducer earlier, dynamic pressure transducer is under the effect of gaseous tension, convert gaseous tension to faint electric signal, faint electric signal is after the navigational speed measuring instrument circuit board is handled, being sent to microprocessor handles, data after microprocessor will be handled are sent to computer-solution by interface circuit, according to the result who resolves, computing machine judges automatically whether the linearity of dynamic pressure transducer is qualified, and generates examining report;
Navigational speed measuring instrument communication signal detecting unit selects 1 analog switch, RS422 to change the S232 interface circuit by navigational speed measuring instrument circuit board, two 4 and the RS232 interface circuit is formed, select 1 analog switch by microprocessor control two 4, change the S232 interface circuit by RS232 interface circuit and RS422 respectively navigational speed measuring instrument circuit board RS232 signal of exporting and the RS422 signal that converts the RS232 signal to are sent to computing machine respectively, computing machine is with the data parsing of reading in, and whether the decision data output format is correct automatically;
Navigational speed measuring instrument power adaptation detecting unit is by the navigational speed measuring instrument circuit board, power-switching circuit, rotary switch 21, toggle switch 20 and power light 19 are formed, the external cable of navigational speed measuring instrument circuit board is inserted seven core supply sockets 15 of 50 paths, toggle switch 20 on the front panel 25 of switching upper box 16,9v is provided for the navigational speed measuring instrument circuit board respectively, 24v, the 36v power supply, it is bright that power supply switches the corresponding voltage indicator lamp 19 in back, navigational speed measuring instrument circuit board output data is directly to computing machine, computing machine is with the data parsing of reading in, by rotary switch 21, can pursue test the data output of 50 navigational speed measuring instruments under different operating voltage, and with the data under different operating voltage output by to test, and generate examining report.
A kind of navigational speed measuring instrument combined test stand, comprise by upper box 16, middle casing 8 and lower box 10 casing of forming 1 and the circuit board that is positioned in the casing 1, on middle casing 8 and lower box 10, be respectively equipped with middle cabinet door 5 and the lower box door 6 split, on the right plate 14 of casing 1, power control switch 11 is installed, system power supply switch 9, testing power supply switch 28 and 220V supply socket 12 are equipped with an above air valve switch 24 from left to right successively on the front panel 25 of upper box 16, the navigational speed measuring instrument test channel 22 of two seven cores, four above waveres 21, two above toggle switchs 20, two above voltage indicator lamps 19 and the data line socket 17 that is connected with notebook 7; An above kinematic axis frock 2, above sensor frock 3 and two navigational speed measuring instrument circuit board tool 4 are installed at the middle part, a left side of the top panel 27 of middle casing 8, at the sensor passage that one seven core each side is installed 23 and the build-out resistor slot 26 of sensor frock 3, navigational speed measuring instrument electric connector short-circuit detecting socket 18 is installed between adjacent two navigational speed measuring instrument circuit board tool 4; On the right plate 14 of casing 1 air intake opening 13 is installed, air intake opening 13 is communicated with air valve switch 24.
Seven core supply sockets 15 of 50 paths also are installed on the right plate 14 of casing 1.
Right part at the top panel 27 of middle casing 8 is placed with notebook 7.
Claims (5)
1. navigational speed measuring instrument integrated test system, it is characterized in that: form by sensor characteristic detecting unit, circuit board voltage and linearity test unit, the static pressurization of circuit board detecting unit, navigational speed measuring instrument communication signal detecting unit, navigational speed measuring instrument power adaptation detecting unit, microprocessor and computing machine, wherein:
The sensor characteristic detecting unit is by the constant voltage driving source, pneumatic supply, dynamic pressure transducer, sensor signal amplification filtering circuit and sensor characteristic analog to digital conversion circuit are formed, pneumatic supply is through air intake opening (13), gas circuit divider in the casing of navigational speed measuring instrument combined test stand (1), air valve switch (24) is delivered to sensor frock (3), the lead-in wire of dynamic pressure transducer is connected on the circuit board in the casing (1) of navigational speed measuring instrument combined test stand by the crocodile clip on the sensor passage (23) of seven cores, the constant voltage driving source provides constant voltage to dynamic pressure transducer, dynamic pressure transducer is under the pressure effect of the gas of pneumatic supply output, the electric signal that pressure transducer output is faint, faint electric signal amplifies through sensor signal amplification filtering circuit, after the Filtering Processing, by the sensor characteristic analog to digital conversion circuit analog signal conversion is become digital signal, being sent to microprocessor handles, data after microprocessor will be handled are sent to computer-solution by interface circuit, according to the result who resolves, the characterisitic parameter of the automatic determine sensor of computing machine: the linearity, hysteresis, whether repeatability is qualified, and generate examining report;
Circuit board voltage and linearity test unit are by the navigational speed measuring instrument circuit board, relay, voltage conversion circuit, 8 select 1 analog switch and voltage and linear analog to digital conversion circuit to form, the navigational speed measuring instrument circuit board is put into navigational speed measuring instrument circuit board tool (4), the external cable of navigational speed measuring instrument circuit board inserts the navigational speed measuring instrument test channel (22) of seven cores, the operating voltage of navigational speed measuring instrument circuit board is connected on the circuit board in the casing (1) of navigational speed measuring instrument combined test stand by navigational speed measuring instrument circuit board tool (4), operating voltage on the navigational speed measuring instrument circuit board is after voltage conversion circuit carries out voltage transitions, select 1 analog switch by 8 again, by voltage and linear analog to digital conversion circuit analog signal conversion is become digital signal, being sent to microprocessor handles, microprocessor detects the voltage of key point on the navigational speed measuring instrument circuit board one by one, to detect data and be sent to computing machine by interface circuit, computing machine judges that automatically whether qualified the voltage of navigational speed measuring instrument elements on circuit board is; Simultaneously by the microprocessor pilot relay, for the navigational speed measuring instrument circuit board provides the simulation millivolt signal, millivolt signal is after the navigational speed measuring instrument circuit board is handled, return to voltage conversion circuit and carry out voltage transitions once more, select 1 analog switch by 8 again, by voltage and linear analog to digital conversion circuit analog signal conversion is become digital signal, being sent to microprocessor handles, data after microprocessor will be handled are sent to computer-solution, whether the linearity of judging the navigational speed measuring instrument circuit board meets the demands, and judge that automatically whether qualified the navigational speed measuring instrument circuit board assemblies is, generate examining report;
The static pressurization of circuit board detecting unit is by pneumatic supply, dynamic pressure transducer and navigational speed measuring instrument circuit board are formed, the sensor and the navigational speed measuring instrument circuit board that have encapsulated are connected, be fixed on the kinematic axis frock (2), the external cable of navigational speed measuring instrument circuit board inserts the navigational speed measuring instrument test channel (22) of seven cores, pneumatic supply applies different normal pressures to dynamic pressure transducer earlier, dynamic pressure transducer is under the effect of gaseous tension, convert gaseous tension to faint electric signal, faint electric signal is after the navigational speed measuring instrument circuit board is handled, being sent to microprocessor handles, data after microprocessor will be handled are sent to computer-solution by interface circuit, according to the result who resolves, computing machine judges automatically whether the linearity of dynamic pressure transducer is qualified, and generates examining report;
Navigational speed measuring instrument communication signal detecting unit selects 1 analog switch, RS422 to change the S232 interface circuit by navigational speed measuring instrument circuit board, two 4 and the RS232 interface circuit is formed, select 1 analog switch by microprocessor control two 4, change the S232 interface circuit by RS232 interface circuit and RS422 respectively navigational speed measuring instrument circuit board RS232 signal of exporting and the RS422 signal that converts the RS232 signal to are sent to computing machine respectively, computing machine is with the data parsing of reading in, and whether the decision data output format is correct automatically;
Navigational speed measuring instrument power adaptation detecting unit is by the navigational speed measuring instrument circuit board, power-switching circuit, rotary switch (21), toggle switch (20) and power light (19) are formed, the external cable of navigational speed measuring instrument circuit board is inserted seven core supply sockets (15) of 50 paths, toggle switch (20) on the front panel (25) of switching upper box (16), 9v is provided for the navigational speed measuring instrument circuit board respectively, 24v, the 36v power supply, it is bright that power supply switches the corresponding voltage indicator lamp (19) in back, navigational speed measuring instrument circuit board output data is directly to computing machine, computing machine is with the data parsing of reading in, by rotary switch (21), can pursue test the data output of 50 navigational speed measuring instruments under different operating voltage, and with the data under different operating voltage output by to test, and generate examining report.
2. navigational speed measuring instrument combined test stand, comprise by upper box (16), in the casing (1) formed of casing (8) and lower box (10) and be positioned over the interior circuit board of casing (1), on middle casing (8) and lower box (10), be respectively equipped with middle cabinet door (5) and the lower box door (6) split, on the right plate (14) of casing (1), power control switch (11) is installed, system power supply switch (9), testing power supply switch (28) and 220V supply socket (12) is characterized in that: it is characterized in that: on the front panel (25) of upper box (16) an above air valve switch (24) is installed successively from left to right, the navigational speed measuring instrument test channel (22) of two seven cores, four above waveres (21), two above toggle switchs (20), two above voltage indicator lamps (19) and the data line socket (17) that is connected with notebook; Middle part, a left side at the top panel (27) of middle casing (8) is equipped with an above kinematic axis frock (2), an above sensor frock (3) and two navigational speed measuring instrument circuit board tool (4), sensor passage that one seven core each side is installed (23) and build-out resistor slot (26) in sensor frock (3) are equipped with navigational speed measuring instrument electric connector short-circuit detecting socket (18) between adjacent two navigational speed measuring instrument circuit board tool (4); On the right plate (14) of casing (1) air intake opening (13) is installed, air intake opening (13) is communicated with air valve switch (24).
3. navigational speed measuring instrument combined test stand as claimed in claim 2 is characterized in that: seven core supply sockets (15) of 50 paths also are installed on the right plate (14) of casing (1).
4. as claim 2 or 3 described navigational speed measuring instrument combined test stands, it is characterized in that: the right part at the top panel (27) of middle casing (8) is placed with computing machine (7).
5. navigational speed measuring instrument combined test stand as claimed in claim 4 is characterized in that: described computing machine (7) is a notebook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102074266A CN101893646B (en) | 2010-06-23 | 2010-06-23 | Waterlog comprehensive testing system and waterlog comprehensive testing platform thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102074266A CN101893646B (en) | 2010-06-23 | 2010-06-23 | Waterlog comprehensive testing system and waterlog comprehensive testing platform thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101893646A true CN101893646A (en) | 2010-11-24 |
| CN101893646B CN101893646B (en) | 2012-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102074266A Active CN101893646B (en) | 2010-06-23 | 2010-06-23 | Waterlog comprehensive testing system and waterlog comprehensive testing platform thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132407A (en) * | 2017-05-02 | 2017-09-05 | 上海德科电子仪表有限公司 | A kind of automobile instrument production line quiescent current test device |
| CN108828350A (en) * | 2018-05-04 | 2018-11-16 | 天地融电子（天津）有限公司 | A kind of test method |
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| US5349347A (en) * | 1993-03-29 | 1994-09-20 | Alliedsignal Inc. | Method and apparatus for correcting dynamically induced errors in static pressure, airspeed and airspeed rate |
| CN2625904Y (en) * | 2003-06-16 | 2004-07-14 | 中国第一汽车集团公司 | Vehicle speed signal transformation controller detector |
| EP1162465B1 (en) * | 1999-03-08 | 2006-09-27 | Kabushiki Kaisha Tokai Rika Denki Seisakusho | Vehicle speedometer |
| CN201215563Y (en) * | 2008-07-11 | 2009-04-01 | 芜湖天宇科技开发有限公司 | Electronic vehicle speedometer and tachometer check instrument for automobile |
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2010
- 2010-06-23 CN CN2010102074266A patent/CN101893646B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5349347A (en) * | 1993-03-29 | 1994-09-20 | Alliedsignal Inc. | Method and apparatus for correcting dynamically induced errors in static pressure, airspeed and airspeed rate |
| EP1162465B1 (en) * | 1999-03-08 | 2006-09-27 | Kabushiki Kaisha Tokai Rika Denki Seisakusho | Vehicle speedometer |
| CN2625904Y (en) * | 2003-06-16 | 2004-07-14 | 中国第一汽车集团公司 | Vehicle speed signal transformation controller detector |
| CN201215563Y (en) * | 2008-07-11 | 2009-04-01 | 芜湖天宇科技开发有限公司 | Electronic vehicle speedometer and tachometer check instrument for automobile |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132407A (en) * | 2017-05-02 | 2017-09-05 | 上海德科电子仪表有限公司 | A kind of automobile instrument production line quiescent current test device |
| CN108828350A (en) * | 2018-05-04 | 2018-11-16 | 天地融电子（天津）有限公司 | A kind of test method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101893646B (en) | 2012-06-27 |
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