CN105466374A - Force-controllable size measurement device and using method thereof - Google Patents
Force-controllable size measurement device and using method thereof Download PDFInfo
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- CN105466374A CN105466374A CN201610066597.9A CN201610066597A CN105466374A CN 105466374 A CN105466374 A CN 105466374A CN 201610066597 A CN201610066597 A CN 201610066597A CN 105466374 A CN105466374 A CN 105466374A
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- mobile agent
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- driving motor
- direct driving
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
- G01B21/045—Correction of measurements
Abstract
The invention relates to a force-controllable size measurement device and belongs to the technical field of mechanical and electronic integration and sensing measurement. The force-controllable size measurement device comprises a base, a direct-drive motor, a moving body, a measurement head, a zero-position sensor, a sensing element, a measuring scale, a displacement sensor, a driver and a controller. The moving body is fixed to the direct-drive motor. The direct-drive motor pushing the moving body to linearly move is fixed to the base. The measurement head is fixed to the moving body. The sensing element is arranged on the moving body. The zero-position sensor is arranged in the forwarding direction of the moving body. The measuring scale is arranged on the moving body. The displacement sensor used for acquiring data of the measuring scale is located on one side of the moving body. The controller, the zero-position sensor and the displacement sensor are all electrically connected with the driver. The invention further relates to a using method of the force-controllable size measurement device. The device can be used for measuring the external dimension of an object at a certain measurement force.
Description
Technical field
The present invention relates to the technical field of electromechanical integration and sensing measurement, particularly relate to a kind of dimension measuring device and using method thereof of controllable force.
Background technology
At present, the competition on market is increasing, and every profession and trade all walks excelsior road, and the requirement for product quality is more and more higher, wherein it is also proposed higher requirement for dimensional accuracy.When carrying out product outside dimension and measuring, the traditional sensors that people use is generally encapsulate a spring inside grating scale or magnetic railings ruler, and a cylinder-pushed of arranging in pairs or groups when user uses, touches testee surface, obtains a measured value.For the product size that some are not perfect rigidity, the power being pressed in body surface during measurement is different, measures the size come and has error.Such as battery product needs installation to use in a device, so physical dimension must within certain acceptability limit.When product quality detects, must measure its length, width and height, the product that sorting size is not inconsistent.But battery is all generally flexible packaging, skin hardness is also little, if adopt cylinder, when air pressure change, thrust will change, and the data tested out are just inaccurate.In actual production, the part product of the soft materials such as a lot of plastics, rubber all can run into this problem.
Summary of the invention
For the technical matters existed in prior art, the object of the invention is: the dimension measuring device providing a kind of controllable force, the ergometry that this device can be certain measures the outside dimension surveying object;
Another object of the present invention is to provide a kind of using method of dimension measuring device of controllable force.
In order to achieve the above object, the present invention adopts following technical scheme:
A dimension measuring device for controllable force, comprises pedestal, direct driving motor, mobile agent, measuring head, null pick-up, sensing element, dip stick, displacement transducer, driver and controller;
Described mobile agent is fixed on direct driving motor, and the direct driving motor promoting mobile agent rectilinear motion is fixed on pedestal, and described measuring head is fixed on mobile agent;
Described sensing element is arranged on mobile agent, and described null pick-up is arranged in the working direction of mobile agent;
Described dip stick is arranged on mobile agent, and the displacement transducer for obtaining dip stick data is positioned at the side of mobile agent, and described dip stick and displacement transducer are positioned at the same side of mobile agent;
Described controller, null pick-up, displacement transducer are all connected with actuator electrical.
The data of an ergometry F are inputted to controller, controller control and drive system exports corresponding current value, mobile agent is driven to do rectilinear motion after direct driving motor received current value, the motion of mobile agent drives measuring head motion, measuring head is finally made to be pressed on the holding plane of testee with ergometry F, the position data of the dip stick got is transferred to controller by driver by displacement transducer, obtains size value L after controller process
1.Object is placed in the plane, then inputs the data of same ergometry F to controller, after final controller process, obtain size value L
2, by formula L=L
2-L
1draw the size of testee.Sensing element and null pick-up the consistance can guaranteeing to measure is set.
Further: the dimension measuring device of controllable force also comprises guide rail and slide block, and described guide rail is fixed on the platform of pedestal, described skid formula is arranged on guide rail, and described mobile agent is fixed on slide block.During direct driving motor driving mobile agent linear movement, band movable slider moves on guide rail.
Further: mobile agent is provided with mounting blocks, described dip stick is arranged on mounting blocks; Described dip stick is positioned at the left side of mobile agent, and described displacement transducer is positioned at the left side of dip stick.
Further: sensing element is arranged on the right side of mobile agent, described null pick-up is positioned at the right side of mobile agent.
Further: direct driving motor comprises stator and mover, described stator is fixed on pedestal, and described moving initiatively is fixed on the mover of rectilinear motion.
Further: mobile agent comprises the second vertical block and the second horizontal block be integrally formed, described second vertical block is fixed on direct driving motor, described sensing element is fixed on the right side of the second horizontal block, described dip stick is arranged on the left side of the second horizontal block, and described measuring head is fixed on the front side of the second horizontal block.
Further: the dimension measuring device of controllable force also comprises casing, described null pick-up is fixed on the right side of casing, and described displacement transducer is fixed on the left side of casing, and the front end of described casing is provided with the breach passed for measuring head.
Further: dip stick is magnetic railings ruler or grating scale, described displacement transducer is corresponding magnetic induction sensor or grating sensor.
A using method for the dimension measuring device of controllable force, comprises following measuring process:
(1) position of calibration measurements: to the data of controller input measurement power F, controller control and drive system exports corresponding current value, mobile agent is driven to do rectilinear motion after direct driving motor received current value, the motion of mobile agent drives measuring head motion, measuring head is finally made to be pressed on the holding plane of testee with ergometry F, the position data of the dip stick got is transferred to controller by driver by displacement transducer, obtains size value L after controller process
1;
(2) size of object is measured: placed in the plane by testee, the data of same ergometry F are inputted again to controller, controller control and drive system exports corresponding current value, mobile agent is driven to do rectilinear motion after direct driving motor received current value, the motion of mobile agent drives measuring head motion, measuring head is finally made to be pressed on testee with ergometry F, the position data of the dip stick got is transferred to controller by driver by displacement transducer, obtains size value L after controller process
2, by formula L=L
2-L
1draw the size of testee.
When first time uses that the installation site of the parts in this device, this device changes, the installation direction of parts in this device changes or the weight of measuring head changes, this using method also comprises following power calibration steps:
(1) numerical value F is obtained
1and I
1: controller enters power calibration function, and after the random generation current signal of controller, controller control and drive system exports corresponding current value I
1, direct driving motor received current value I
1rear drive mobile agent motion, the motion of mobile agent drives measuring head to be pressed on force tester, records the value F of now force tester
1with the current value I on direct driving motor
1;
(2) numerical value F is obtained
2and I
2: controller enters power calibration function again, and after controller produces another current signal at random, controller control and drive system exports corresponding current value I
2, direct driving motor received current value I
2rear drive mobile agent motion, the motion of mobile agent drives measuring head to be pressed on force tester, records the value F of now force tester
2with the current value I on direct driving motor
2;
(3) linear relationship of the electric current I on computation and measurement power F and direct driving motor: by the numerical value F got
1, I
1and F
2, I
2the linear functional relation of the electric current I on ergometry F and direct driving motor is drawn by formula F=kI+a.
Generally speaking, tool of the present invention has the following advantages:
1. the ergometry that device of the present invention can be certain measures the outside dimension surveying object.
2. device of the present invention can ensure each consistance measured, and the accuracy of measurement is high.
3. device applicability of the present invention is strong, can measure under various circumstances.
4. the using method of the dimension measuring device of controllable force of the present invention can realize measuring with certain ergometry the outside dimension surveying object.
Accompanying drawing explanation
Fig. 1 is the structural representation of first direction stereographic map of the present invention, does not draw casing.
Fig. 2 is the structural representation of second direction stereographic map of the present invention, does not draw casing.
Fig. 3 is the structural representation of third direction stereographic map of the present invention, the parts not drawing casing, mobile agent and be fixed on mobile agent.
Fig. 4 is vertical view of the present invention, does not draw casing.
Fig. 5 is front view of the present invention, does not draw casing.
Fig. 6 is the structural representation of fourth direction stereographic map of the present invention, draws casing, does not draw upper cover plate.
Schematic diagram when Fig. 7 is the position of calibration measurements of the present invention.
Fig. 8 is the schematic diagram of the present invention when measuring the size of object.
Wherein, 1 is pedestal, and 1-1 is the first vertical block, and 1-2 is the first horizontal block, and 2 is mobile agent, 2-1 is the second vertical block, and 2-2 is the second horizontal block, and 3 is measuring head, and 3-1 is the 3rd vertical block, and 3-2 is the 3rd horizontal block, 4 is direct driving motor, and 4-1 is stator, and 4-2 is mover, and 5 is photoelectric tube, 6 is anti-dazzling screen, and 7 is mounting blocks, and 8 is displacement transducer, and 9 is slide block, 10 is guide rail, and 11 is dip stick, and 12 is casing, and 12-1 is positive stop, 12-2 is right cover plate, and 12-3 is left cover, and 13 is testee, and 14 is plane.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
Hereafter said upper and lower fore-and-aft direction is consistent with the upper bottom right left direction of Fig. 5, and said left and right directions is consistent with the lower upper direction of Fig. 4.
Shown in composition graphs 1 and Fig. 2, a kind of dimension measuring device of controllable force, comprises pedestal, direct driving motor, mobile agent, measuring head, null pick-up, sensing element, dip stick, displacement transducer, casing, guide rail, slide block, driver and controller.Described mobile agent is fixed on direct driving motor, and the direct driving motor promoting mobile agent rectilinear motion is fixed on pedestal, and described measuring head is fixed on mobile agent; Described sensing element is arranged on mobile agent, and described null pick-up is arranged in the working direction of mobile agent; Described dip stick is arranged on mobile agent, and the displacement transducer for obtaining dip stick data is positioned at the side of mobile agent, and described dip stick and displacement transducer are positioned at the same side of mobile agent; Described controller, null pick-up, displacement transducer are all connected with actuator electrical.
Below the technical scheme of this device is described in detail:
Shown in composition graphs 1, Fig. 3, Fig. 5, pedestal comprises the first vertical block and the first horizontal block be integrally formed, and the platform that the first horizontal block is used as pedestal uses.Direct driving motor comprises stator and mover, and described mover is linear motion-type, and stator is fixed on the end face of the first vertical block.Guide rail is fixed on the platform of pedestal, and skid formula is arranged on guide rail, and described mobile agent is fixed on slide block.
Shown in composition graphs 1, mobile agent comprises the second vertical block and the second horizontal block be integrally formed, second vertical block is fixed on the mover of direct driving motor, and the mode that the second horizontal block and slide block are bolted is fixed, and other modes also can be adopted to be fixed on slide block by the second horizontal block.The front part of the second horizontal block is provided with groove, and measuring head comprises the 3rd horizontal block and the 3rd vertical block that are integrally formed, and the 3rd horizontal block is fixed on the groove of the second horizontal block, and the length of the 3rd horizontal block is greater than the length of the 3rd vertical block.Second horizontal block of mobile agent is provided with mounting blocks, and mounting blocks comprises vertical block and horizontal block, and horizontal block and vertical block are integrally formed, vertical block is positioned at the left side of mobile agent, and as shown in Figure 4, dip stick is arranged on the left side of vertical block, dip stick is thinner, and Fig. 4 represents with a line; Vertical block is provided with the through hole of kidney-shaped, by the through hole of this kidney-shaped, mounting blocks can be fixed on the diverse location on the left and right directions of mobile agent.Displacement transducer is positioned at the left side of dip stick.Described dip stick is magnetic railings ruler or grating scale, and described displacement transducer is corresponding magnetic induction sensor or grating sensor.Described sensing element is arranged on the right side of the second horizontal block, described null pick-up is arranged in the working direction of mobile agent, when mobile agent moves forward to null pick-up, null pick-up senses the position of sensing element, null pick-up by Signal transmissions to driver, driver sends this signal again to controller, and controller stores the positional information of now sensing element, and is designated as absolute zero position.Described sensing element is anti-dazzling screen, magnet iron piece, metalwork etc., and described null pick-up is corresponding photoelectric tube, Hall element, metal approach switch etc.Sensing element is herein for anti-dazzling screen, and null pick-up is described for photoelectric tube.Anti-dazzling screen is fixed on the right side of the second horizontal block, and photoelectric tube is provided with power valve positioned opposite and receiving tube, and power valve and receiving tube form an opening, and during mobile agent motion, the upper end of anti-dazzling screen is through this opening.
Shown in composition graphs 6, the casing of this device is for the protection of the parts of inside, and photoelectric tube is fixed on the right side of casing, and displacement transducer is fixed on the left side of casing, and the front end of casing is provided with the breach passed for measuring head.This casing comprises left cover, right cover plate, upper cover plate and positive stop, and upper cover plate does not draw; Positive stop is fixed on the front end face of pedestal, and positive stop is provided with the breach passed for measuring head; Right cover plate is fixed on the right side of pedestal and positive stop, and photoelectric tube is fixed on right cover plate; Left cover is fixed on the left side of pedestal and positive stop, and displacement transducer is fixed on left cover; Upper cover plate is arranged on the upper end of pedestal.
This device is also provided with corresponding driver and controller, and driver and controller belong to prior art, and driver is the servo-driver of direct driving motor, and driver, by three layers of closed-loop control, comprises speed ring, position ring and electric current loop.Controller, displacement transducer, photoelectric tube are all connected with actuator electrical, controller can to driver signal transmission, driver also can to controller signal transmission, and driver receives the signal rear drive direct driving motor work of controller, displacement transducer and photoelectric tube.
Below the service condition of this device and using method are described in detail:
The mover of direct driving motor promotes mobile agent and does rectilinear motion along guide rail, when being fixed on the anti-dazzling screen on mobile agent and passing the opening part of photoelectric tube, namely when anti-dazzling screen stops the signal transmission of the power valve of photoelectric tube and receiving tube, photoelectric tube senses the position of anti-dazzling screen, photoelectric tube by Signal transmissions to driver, driver sends this signal again to controller, and controller stores the positional information of now anti-dazzling screen, and is designated as absolute zero position.After each power-off, this device still can find absolute zero position, thus guarantees the consistance of measurement.
This device can make measuring head be pressed in the surface of testee with certain ergometry: first to the data of controller input measurement power, controller control and drive system exports corresponding current value, mobile agent is driven to move after direct driving motor received current value, the motion of mobile agent drives the motion of measuring head, finally makes measuring head be pressed in the surface of testee with corresponding ergometry.When ergometry refers to measurement, measuring head is pressed in testee surface with certain pressure, and the size of ergometry equals the normal pressure that measuring head is pressed in testee surface.
This device can realize the size measuring testee: dip stick is described for magnetic induction sensor with magnetic railings ruler, displacement transducer herein, and the N pole on magnetic railings ruler and S are extremely equidistantly alternately arranged, and displacement transducer can sense the change of N pole and S pole.The motion of direct driving motor mover drives mobile agent motion, the motion of mobile agent drives the motion of magnetic railings ruler, magnetic induction sensor senses the motion of magnetic railings ruler, position data is returned to driver by magnetic induction sensor by magnetic railings ruler constantly, when measuring head is pressed in the holding plane of testee, driver is transferred to controller after getting the position data of magnetic railings ruler, controller record is the position data that returns of magnetic railings ruler now, and be designated as zero-bit, after having marked zero-bit, each measurement afterwards does not all need again to demarcate zero-bit.Placed in the plane by testee, when measuring head is pressed in testee surface, driver is transferred to controller after getting the position data of magnetic railings ruler, obtains the size value of testee after controller process.Magnetic railings ruler is when moving, and magnetic induction sensor obtains the positional information of magnetic railings ruler, and the positional information got from magnetic induction sensor is used for the control of measuring head position and direct driving motor mover speed by driver.
Electric current I on the size F of ergometry and direct driving motor has linear functional relation, and formula is F=kI+a.Wherein, k, a are relevant with direction with the installation site of the parts in this device, and such as replacing measuring head or this device are installed from level and become the value that vertical installation all can change k and a.
First time uses that the installation site of the parts in this device, this device changes, the installation direction of parts in this device changes, the weight of measuring head changes, more than appearance during four kinds of situations, need first calibration measurements power, namely first power calibration is carried out to this device, thus obtain the linear relationship between the electric current I on mensuration ergometry F and direct driving motor.The method of power calibration is as follows:
(1) numerical value F is obtained
1and I
1: controller enters power calibration function, and after the random generation current signal of controller (but scope of the random current value I produced of user oneself setting), controller control and drive system exports corresponding current value I
1, direct driving motor received current value I
1rear drive mobile agent motion, the motion of mobile agent drives measuring head to be pressed on force tester, records the value F of now force tester
1with the current value I on direct driving motor
1;
(2) numerical value F is obtained
2and I
2: controller enters power calibration function again, and after controller produces another current signal at random, controller control and drive system exports corresponding current value I
2, direct driving motor received current value I
2rear drive mobile agent motion, the motion of mobile agent drives measuring head to be pressed on force tester, records the value F of now force tester
2with the current value I on direct driving motor
2;
(3) linear relationship of the electric current I on computation and measurement power F and direct driving motor: by the numerical value F got
1, I
1and F
2, I
2the linear functional relation of the electric current I on ergometry F and direct driving motor is drawn by formula F=kI+a.
After having calibrated this device, this device available measures the size of object with the ergometry F of setting, and measuring method is as follows:
(1) position of calibration measurements: to the data of controller input measurement power F, controller control and drive system exports corresponding current value, mobile agent is driven to do rectilinear motion after direct driving motor received current value, the motion of mobile agent drives measuring head motion, as shown in Figure 7, finally make measuring head be pressed on the holding plane of testee with ergometry F, the position data of the dip stick got is transferred to controller by driver by displacement transducer, obtains size value L after controller process
1;
(2) size of object is measured: placed in the plane by testee, the data of same ergometry F are inputted again to controller, controller control and drive system exports corresponding current value, mobile agent is driven to do rectilinear motion after direct driving motor received current value, the motion of mobile agent drives measuring head motion, as shown in Figure 8, measuring head is finally made to be pressed on testee with ergometry F, the position data of the dip stick got is transferred to controller by driver by displacement transducer, obtains size value L after controller process
2, by formula L=L
2-L
1draw the size of testee.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. a dimension measuring device for controllable force, is characterized in that: comprise pedestal, direct driving motor, mobile agent, measuring head, null pick-up, sensing element, dip stick, displacement transducer, driver and controller;
Described mobile agent is fixed on direct driving motor, and the direct driving motor promoting mobile agent rectilinear motion is fixed on pedestal, and described measuring head is fixed on mobile agent;
Described sensing element is arranged on mobile agent, and described null pick-up is arranged in the working direction of mobile agent;
Described dip stick is arranged on mobile agent, and the displacement transducer for obtaining dip stick data is positioned at the side of mobile agent, and described dip stick and displacement transducer are positioned at the same side of mobile agent;
Described controller, null pick-up, displacement transducer are all connected with actuator electrical.
2. according to the dimension measuring device of controllable force according to claim 1, it is characterized in that: it also comprises guide rail and slide block, described guide rail is fixed on the platform of pedestal, and described skid formula is arranged on guide rail, and described mobile agent is fixed on slide block.
3. according to the dimension measuring device of controllable force according to claim 1, it is characterized in that: described mobile agent is provided with mounting blocks, described dip stick is arranged on mounting blocks; Described dip stick is positioned at the left side of mobile agent, and described displacement transducer is positioned at the left side of dip stick.
4. according to the dimension measuring device of controllable force according to claim 1, it is characterized in that: described sensing element is arranged on the right side of mobile agent, described null pick-up is positioned at the right side of mobile agent.
5. according to the dimension measuring device of controllable force according to claim 1, it is characterized in that: described direct driving motor comprises stator and mover, described stator is fixed on pedestal, and described moving initiatively is fixed on the mover of rectilinear motion.
6. according to the dimension measuring device of controllable force according to claim 1, it is characterized in that: described mobile agent comprises the second vertical block and the second horizontal block be integrally formed, described second vertical block is fixed on direct driving motor, described sensing element is fixed on the right side of the second horizontal block, described dip stick is arranged on the left side of the second horizontal block, and described measuring head is fixed on the front side of the second horizontal block.
7. according to the dimension measuring device of controllable force according to claim 1, it is characterized in that: it also comprises casing, described null pick-up is fixed on the right side of casing, and described displacement transducer is fixed on the left side of casing, and the front end of described casing is provided with the breach passed for measuring head.
8. according to the dimension measuring device of controllable force according to claim 1, it is characterized in that: described dip stick is magnetic railings ruler or grating scale, described displacement transducer is corresponding magnetic induction sensor or grating sensor.
9. according to the using method of the dimension measuring device of a kind of controllable force described in any one of claim 1 ~ 8, it is characterized in that: comprise following measuring process:
(1) position of calibration measurements: to the data of controller input measurement power F, controller control and drive system exports corresponding current value, mobile agent is driven to do rectilinear motion after direct driving motor received current value, the motion of mobile agent drives measuring head motion, measuring head is finally made to be pressed on the holding plane of testee with ergometry F, the position data of the dip stick got is transferred to controller by driver by displacement transducer, obtains size value L after controller process
1;
(2) size of object is measured: placed in the plane by testee, the data of same ergometry F are inputted again to controller, controller control and drive system exports corresponding current value, mobile agent is driven to do rectilinear motion after direct driving motor received current value, the motion of mobile agent drives measuring head motion, measuring head is finally made to be pressed on testee with ergometry F, the position data of the dip stick got is transferred to controller by driver by displacement transducer, obtains size value L after controller process
2, by formula L=L
2-L
1draw the size of testee.
10. according to the using method of the dimension measuring device of controllable force according to claim 9, it is characterized in that: when first time uses that the installation site of the parts in this device, this device changes, the installation direction of parts in this device changes or the weight of measuring head changes, this using method also comprises following power calibration steps:
(1) numerical value F is obtained
1and I
1: controller enters power calibration function, and after the random generation current signal of controller, controller control and drive system exports corresponding current value I
1, direct driving motor received current value I
1rear drive mobile agent motion, the motion of mobile agent drives measuring head to be pressed on force tester, records the value F of now force tester
1with the current value I on direct driving motor
1;
(2) numerical value F is obtained
2and I
2: controller enters power calibration function again, and after controller produces another current signal at random, controller control and drive system exports corresponding current value I
2, direct driving motor received current value I
2rear drive mobile agent motion, the motion of mobile agent drives measuring head to be pressed on force tester, records the value F of now force tester
2with the current value I on direct driving motor
2;
(3) linear relationship of the electric current I on computation and measurement power F and direct driving motor: by the numerical value F got
1, I
1and F
2, I
2the linear functional relation of the electric current I on ergometry F and direct driving motor is drawn by formula F=kI+a.
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| CN106767625A (en) * | 2016-12-26 | 2017-05-31 | 中国计量大学 | A kind of outside micrometer check and correction gauge rod calibrating installation and calibration method |
| CN106767625B (en) * | 2016-12-26 | 2022-11-04 | 中国计量大学 | Measuring rod calibration device and calibration method for calibrating outside micrometer |
| CN108344338A (en) * | 2017-01-22 | 2018-07-31 | 北京博维恒信科技发展有限公司 | The measurement assembly and measuring scale of measuring scale |
| CN108939184A (en) * | 2017-05-19 | 2018-12-07 | 宏碁股份有限公司 | Displacement sensing device and peritoneal dialysis system |
| US10751458B2 (en) | 2017-05-19 | 2020-08-25 | Acer Incorporated | Displacement sensing device and peritoneal dialysis system |
| CN110388860A (en) * | 2018-04-20 | 2019-10-29 | 株式会社三丰 | The control method of measuring device |
| CN115425873A (en) * | 2022-08-30 | 2022-12-02 | 上海衡拓液压控制技术有限公司 | Zero position adjusting control device of direct-acting linear force motor |
| CN115425873B (en) * | 2022-08-30 | 2024-04-05 | 上海衡拓液压控制技术有限公司 | Zero position adjusting and controlling device of direct-acting linear force motor |
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