CN207114092U - A kind of automatic calibration device of fexible film array pressure sensor - Google Patents

A kind of automatic calibration device of fexible film array pressure sensor Download PDF

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Publication number
CN207114092U
CN207114092U CN201720963729.8U CN201720963729U CN207114092U CN 207114092 U CN207114092 U CN 207114092U CN 201720963729 U CN201720963729 U CN 201720963729U CN 207114092 U CN207114092 U CN 207114092U
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sensor
motor
force application
counterweight
plate
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张学锋
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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Abstract

The utility model discloses a kind of automatic calibration device of fexible film array pressure sensor, the caliberating device includes applying force application apparatus part and collecting sensor signal and the motion control portion of load, force application apparatus is realized using lever principle, including elements such as motor, leading screw, counterweight, rotating shaft, force application rod and installing plates, in addition to realize the mechanical structures such as transverse shifting and the guide rail that vertically moves and workbench.The feature of described force application apparatus is to utilize lever principle, by adjusting counterweight to the distance of spindle central, realize and apply the active force that a size determines to the sensing unit of fixed flexible thin film sensor on the table, by gather sensor output signal and it is loaded with its institute compared with completion sensor demarcation.The utility model has the advantages that compact-sized, easy to use, can to realize the static state and dynamic calibration of single-point and array film sensor.

Description

A kind of automatic calibration device of fexible film array pressure sensor
Technical field
The invention belongs to technical field of sensor measurement, more particularly to a kind of fexible film array pressure sensor it is automatic Caliberating device and scaling method.
Background technology
At present using the capacitor type and resistance pressure type fexible film array pressure sensor of macromolecule polymeric material manufacture in machine The numerous areas such as device people, biomedical measurement and auto industry are used widely.Due to high molecular polymer viscoelasticity The precision for influenceing to cause sensor by a certain degree of influence, in order to improve measurement accuracy in actual use, it is necessary to The calibration and demarcation to fexible film array pressure sensor are completed before use.The sensor made of macromolecule polymeric material Generally have the characteristics that flexible big, intensity difference and thickness are small, therefore existing pressure sensor calibrating device (such as piston type pressure Power meter) be not suitable for sensors with auxiliary electrode demarcation.
The content of the invention
The shortcomings that in order to overcome above-mentioned prior art, it is an object of the invention to provide a kind of fexible film array pressure biography The automatic calibration device and scaling method of sensor, the device are poised for battle biographies by mobile realized using lever principle of workbench 5 Each sensing unit of sensor loads one by one, by measuring its corresponding output signal, so as to finally realize whole sensor array Automatic Calibration and calibration.
To achieve these goals, the technical solution adopted by the present invention is:
A kind of automatic calibration device of fexible film array pressure sensor, including mechanical part and signal acquisition and motion Control section, it is characterised in that:
The mechanical part includes being used to place and translate the bearing of sensor 11 and for sensor 11 applying The force application apparatus 6 of pressure;
The signal acquisition includes with motion control portion:Sensor signal conversion and the conditioning module 8 of sensor 11 are connect, The motor 6-7 of the force application apparatus 6 motor motion control module 9 is connect, and connects the sensor signal conversion and adjusts The computer 10 of module 8 and motor motion control module 9 is managed, computer 10 coordinates controlled motor motion-control module 9, realization pair The demarcation of different sensing units on sensor 11.
The bearing includes:
Base 1;
Column 2;
The transverse shifting guide rail 3 being arranged on base 1;
Drive the transverse mobile motor of transverse shifting guide rail 3;
The longitudinal movement rail 4 being arranged on transverse shifting guide rail 3;
Drive the longitudinal mobile motor of longitudinal movement rail 4;
And it is arranged on the workbench 5 on longitudinal movement rail 4;
Wherein, the transverse mobile motor and longitudinal mobile motor are all connected with motor motion control module 9, the sensor 11 are fixed on workbench 5.
The force application apparatus 6 includes installing plate 6-2, and installing plate 6-2 comprises at least back side panel, bottom plate and left and right end plate, The leading screw 6-9 being parallel to each other and two guide rail 6-3 are provided between the end plate of left and right, counterweight 6-4 is arranged on leading screw 6-9 and guide rail 6- On 3, leading screw 6-9 connection motor 6-7, vertical force application rod 6-5 is connected with below the bottom plate;The back side panel passes through Rotating shaft 6-1 and bearing connection bearing column 2, form the fulcrum of lever;The counterweight 6-4 is motor 6-7's Moved back and forth under drive along guide rail 6-3, by changing counterweight 6-4 and rotating shaft 6-1 distance, pass through lever with motor 6-7 Principle is completed to apply the load of sensor 11.
The upper surface of the bottom plate, which is provided with, is oriented to mounting groove 6-6, for installing and fixing force application rod 6-5, force application rod 6-5's Position is arbitrarily moved in guiding mounting groove 6-6, is threadably secured after position is selected.
The load that the sensor 11 is subject to passes through counterweight 6-4 and motor 6-7 quality, counterweight 6-4 and rotating shaft 6-1 Distance, and positions of the force application rod 6-5 in mounting groove 6-6 is oriented to is obtained by computer 10 by principle of moment balance.
On the installing plate 6-2 it is parallel with left and right end plate between the end plate of left and right set on the right side of limiting plate 6-8, installing plate 6- 2 first member plate is used as left side limiting plate, and the counterweight 6-4 is moved between right side limiting plate 6-8 and left side limiting plate;Described turn Axle 6-1 is connected to the position between right side limiting plate 6-8 and right end plate.
The weight of the motor 6-7 and counterweight 6-4 should ensure that when counterweight 6-4 is in right limit position, exert a force The load that bar 6-5 applies to sensor 11 is zero.
Present invention also offers the scaling method of the automatic calibration device based on the fexible film array pressure sensor, Including:
By controlling the motor rotation direction and angle of bearing, the translation of sensor 11 is controlled, it is selected to be marked Fixed sensor sensing unit;
When selected a certain sensing unit carries out static demarcating:
Device is in original state, and now counterweight 6-4 is in right-most position, and force application rod 6-5 applies to sensor 11 to be carried Lotus is zero;Computer 10 sends instruction makes sensor 11 reach specified location by the control of motor control module 9, now force application rod Sensing unit to be calibrated on 6-5 faces sensor 11;Computer 10 controls motor 6-7 fortune by motor control module 9 Dynamic regulation counterweight 6-4 position applies different load to the sensing unit on sensor 11;At the same time, sensor 11 is defeated Go out signal and computer 10 is sent to by sensor signal conversion and conditioning module 8, so as to obtain the sensing unit in different pressures Output signal under power effect, is produced for describing the defeated of Sensor's Static characteristic with the load combinations suffered by sensor 11 Enter --- output relation;
Computer 10 controls the load one by one realized to all sensing units on whole 11 by motor motion control module 9 Application and data acquisition, so as to obtain the input of all sensing units --- output relation, it is finally completed static demarcating;
When selected a certain sensing unit carries out dynamic calibration:
Computer 10 controls motor 6-7 rotating speed and angle force application rod 6-5 by motor motion control module 9 The load applied on sensing unit to be calibrated on the sensor 11 is continually changing, output of sensor 11 during this Signal is changed by sensor signal and conditioning module 8 is sent to computer 10, thus obtains the sensing unit in change pressure Output signal under effect, the input for describing sensor dynamic characteristic is produced with the load combinations suffered by sensor --- Output relation;
Computer 10 by motor motion control module 9 control realize on whole sensor 11 all sensing units by One load applies and data acquisition, so as to obtain the input of all sensing units --- output relation, it is finally completed dynamic calibration.
Compared with prior art, the present invention has advantages below:Loading to sensing unit is realized using leverage, The big minor adjustment by controlling the position can of counterweight to realize application load is only needed, it is simple in construction, easy to control.By changing Load control can easily be realized by becoming the position of load bar on force application apparatus.Needing to apply permanent load to sensor Occasion (as sensor croop property test) only need keep force application apparatus on load balance position it is fixed if can protect It is constant without being influenceed by high molecular polymer viscoelasticity to demonstrate,prove load.Advised by motor drive load balance position by required Rule change can realize the dynamic performance testing of sensor, conveniently meet different demarcation demands.The device have it is easy to operate, The advantages of applying fast load precision height, frequency and dependable performance, available for calibration before Sensor Design, manufacture and use etc. Link, to improve the measurement accuracy of flexible sensor.
Brief description of the drawings
Fig. 1 is the composition schematic diagram of the present invention.
Fig. 2 is the composition schematic diagram of force application apparatus in the present invention.
Fig. 3 is the demarcation flow chart of the embodiment of the present invention.
Fig. 4 is a kind of curve of load for Static Calibration of Sensor.
Fig. 5 is a kind of curve of load for sensor dynamic calibration.
Embodiment
Describe embodiments of the present invention in detail with reference to the accompanying drawings and examples.
A kind of caliberating device for fexible film pressure sensor that the present invention describes, as shown in Figure 1 and Figure 2.Mainly include bottom Seat 1, column 2, transverse shifting guide rail 3, longitudinal movement rail 4, workbench 5 and force application apparatus 6, power supply 7, sensor signal turn Change and conditioning module 8, motor motion control module 9 and computer 10.
Screwed hole is opened on the relevant position of base 1 to be used for that column 2 and transverse shifting guide rail 3 are installed.Longitudinal movement rail 4 On cross slide way 3, workbench 5 is arranged on longitudinal movement rail 4.Before demarcation, by controlling cross slide way 3 and longitudinal direction Motor rotation direction and angle on moving guide rail 4, the distance that workbench 5 can be controlled planar to move, select institute The sensor sensing unit of demarcation.The position of workbench 5 is kept constant in calibration process.Pass through transverse shifting guide rail 3 and longitudinal direction The coordinated movement of various economic factors of moving guide rail 4 can complete the demarcation to all sensing units of sensor array.
Force application apparatus 6 is connected by the bearing on rotating shaft 6-1 with column 2, should ensure that force application apparatus 6 and column during installation Smoothness is rotated between 2, without clamping stagnation.Installing plate 6-2 and rotating shaft 6-1 is kept fixing, and motor 6-7 is fixed on installing plate 6-2, Motor 6-7 drives counterweight 6-4 to be moved horizontally along two guide rail 6-3 by leading screw 6-9 so that counterweight 6-4 and motor 6-1 produces different torques to 6-7 around the shaft under gravity, and the torque acts on load on a sensor with force application rod 6-5 6-1 is balanced around the shaft, completes the loading to sensor 11.In order to prevent force application apparatus 6,6-1 inclines along clockwise direction around the shaft Cover, counterweight 6-4 right side limiting plate 6-8 and left side limiting plate are provided with installing plate 6-2, left side limiting plate is installing plate 6- 2 first member plate, side limiting plate 6-8 is between the end plate of left and right.When counterweight 6-4 is moved to right limit position, limited by right side Position plate 6-8 stops that now generally in horizontality, force application rod 6-5 applies load to sensor sensing unit and is force application apparatus 6 Zero.When counterweight 6-4 is moved to left side extreme position, stopped by left side limiting plate, now force application apparatus is on sensor 11 Apply load and reach maximum.It is provided with installing plate 6-2 and is oriented to mounting groove 6-6, force application rod 6-5, which is connected through a screw thread, is fixed on guiding A certain fixing point in mounting groove 6-6.The fixing point can be any point being oriented in mounting groove 6-6, and its purpose is to logical Cross the distance changed between force application rod 6-5 and rotating shaft 6-1 and reach the purpose that regulation applies load range.
Motor motion control module 9 connects the motor of transverse shifting guide rail 3 and the driving electricity of longitudinal movement rail 4 Machine, while motor control module 9 is connected with computer 10, and the co-operating of two motors is realized by the control of computer 10, Realize sensor contact selection function.Motor motion control module 9 is also connected with the motor 6-7 on force application apparatus simultaneously, and By the control of computer 10, complete sensor load and apply.Sensor signal is changed and output end and the calculating of conditioning module 8 Machine 10 be connected, the signal after conversion is sent to computer 10, carry out on computer 10 further data processing, storage and Display.
Power supply 7 is changed with sensor signal and conditioning module 8, motor control module 9, tested sensor 11 are connected and carried Power supply source.
Described base 1 and the right angle setting of column 2, ensure the precision of measurement.
Described transverse shifting guide rail 3 and the right angle setting of longitudinal movement rail 4, ensure to be arranged on longitudinal movement rail 4 Workbench 5 position reliability and accuracy.
Described force application apparatus 6 rotates smooth with column 2, ensures to apply the accuracy of power on a sensor.
Described control and signal acquisition part subpackage contains computer, sensor signal conversion and conditioning module, force dress Put the rotating speed and angle of electrode, it is characterised in that applying the output signal of load signal on a sensor and sensor can enter Row synchronous acquisition and contrast.
The course of work describes:
When selected a certain sensing unit carries out static demarcating:
Device is in original state, and now counterweight 6-4 is in right-most position, and force application rod 6-5 applies load to sensor It is zero.Computer 10 sends instruction and controls transverse shifting guide rail 3 and the drive on longitudinal movement rail 4 by motor control module 9 Dynamic motor, makes workbench 5 reach specified location, now sensing unit to be calibrated on force application rod 6-5 faces sensor 11.Calculate Machine 10 controls the position of the motor 6-7 motor adjustment counterweights 6-4 on force application apparatus 6 by motor control module 9 to sensing Sensing unit on device 11 applies different load.At the same time, the output signal of sensor 11 is changed by sensor signal And conditioning module 8 is sent to computer 10.Output signal of the sensing unit under different pressures effect has so just been obtained, with Load combinations suffered by sensor have just obtained being used for input --- the output relation for describing Sensor's Static characteristic.
Computer 10 is arranged on transverse shifting guide rail 3 and longitudinal movement rail 4 by the control of motor motion control module 9 Motor co-operating can realize on whole flexible array sensor all sensing units load one by one apply and Data acquisition, so as to obtain the input of all sensing units --- output relation, it is finally completed the quiet of the flexible array sensor State is demarcated.
When selected a certain sensing unit carries out dynamic calibration:
It is essentially identical that sensor, which carries out the course of work of dynamic calibration and static demarcating, and its main distinction is sensor The load being subject to is constant or change.In static demarcating, sensor is calibrated load that sensing unit is subject to one Output signal that is constant and gathering sensor is kept in the section time, then changes the output letter that magnitude of load gathers sensor again Number, it is alternately reciprocal successively to carry out.A kind of curve of load for Static Calibration of Sensor is as shown in Figure 4.
Computer 10 controls the motor 6-7's on force application apparatus 6 by motor motion control module 9 during dynamic calibration Rotating speed and angle cause the load that force application rod 6-5 applies on sensing unit to be calibrated on the sensor 11 be it is continually changing, Output signal of sensor 11 is changed by sensor signal during this and conditioning module 8 is sent to computer 10.Thus Output signal of the sensing unit under change pressure effect is obtained, is just used with the load combinations suffered by sensor To describe the input of sensor dynamic characteristic --- output relation.A kind of curve of load for Static Calibration of Sensor such as Fig. 5 It is shown.
Computer 10 is arranged on transverse shifting guide rail 3 and longitudinal movement rail 4 by the control of motor motion control module 9 Motor co-operating can realize on whole flexible array sensor all sensing units load one by one apply and Data acquisition, so as to obtain the input of all sensing units --- output relation, it is finally completed the dynamic of the flexible array sensor State is demarcated.

Claims (7)

1. a kind of automatic calibration device of fexible film array pressure sensor, including mechanical part and signal acquisition are controlled with motion Part processed, it is characterised in that:
The mechanical part is including for placing and translating the bearing of sensor (11) and for applying to sensor (11) The force application apparatus (6) of pressure;
The signal acquisition includes with motion control portion:Sensor signal conversion and the conditioning module (8) of sensor (11) are connect, The motor motion control module (9) of the motor (6-7) of the force application apparatus (6) is connect, and connects the sensor signal and turns Change and the computer (10) of conditioning module (8) and motor motion control module (9), computer (10) coordinate controlled motor motion control Molding block (9), realize the demarcation to different sensing units on sensor (11).
2. the automatic calibration device of fexible film array pressure sensor according to claim 1, it is characterised in that described to hold Support part includes:
Base (1);
Column (2);
The transverse shifting guide rail (3) being arranged on base (1);
Drive the transverse mobile motor of transverse shifting guide rail (3);
The longitudinal movement rail (4) being arranged on transverse shifting guide rail (3);
Drive the longitudinal mobile motor of longitudinal movement rail (4);
And it is arranged on the workbench (5) on longitudinal movement rail (4);
Wherein, the transverse mobile motor and longitudinal mobile motor are all connected with motor motion control module (9), the sensor (11) it is fixed on workbench (5).
3. the automatic calibration device of fexible film array pressure sensor according to claim 1, it is characterised in that described to apply Power apparatus (6) includes installing plate (6-2), and installing plate (6-2) comprises at least back side panel, bottom plate and left and right end plate, in left and right end plate Between be provided with the leading screw (6-9) being parallel to each other and two guide rails (6-3), counterweight (6-4) is arranged on leading screw (6-9) and guide rail On (6-3), leading screw (6-9) connects motor (6-7), and vertical force application rod (6-5) is connected with below the bottom plate;Institute The column (2) that back side panel connects bearing by rotating shaft (6-1) and bearing is stated, forms the fulcrum of lever;Counterweight (the 6- 4) moved back and forth under motor (6-7) drive along guide rail (6-3), by change counterweight (6-4) and rotating shaft (6-1) away from From passing through lever principle with motor (6-7) and complete to apply the load of sensor (11).
4. the automatic calibration device of fexible film array pressure sensor according to claim 3, it is characterised in that the bottom The upper surface of plate, which is provided with, is oriented to mounting groove (6-6), and for installing and fixing force application rod (6-5), the position of force application rod (6-5) is being led Arbitrarily move into mounting groove (6-6), be threadably secured after position is selected.
5. the automatic calibration device of fexible film array pressure sensor according to claim 4, it is characterised in that the biography The load that sensor (11) is subject to by counterweight (6-4) and the quality of motor (6-7), counterweight (6-4) and rotating shaft (6-1) away from From, and position of the force application rod (6-5) in mounting groove (6-6) is oriented to, obtained by computer (10) by principle of moment balance.
6. the automatic calibration device of fexible film array pressure sensor according to claim 3, it is characterised in that the peace In loading board (6-2) it is parallel with left and right end plate between the end plate of left and right set on the right side of limiting plate (6-8), the left end of installing plate (6-2) Plate is used as left side limiting plate, and the counterweight (6-4) is moved between right side limiting plate (6-8) and left side limiting plate;The rotating shaft (6-1) is connected to position of the right side limiting plate (6-8) between right end plate.
7. the automatic calibration device of fexible film array pressure sensor according to claim 6, it is characterised in that the drive The weight of dynamic motor (6-7) and counterweight (6-4) should ensure that force application rod (6-5) is right when counterweight (6-4) is in right limit position The load that sensor (11) applies is zero.
CN201720963729.8U 2017-08-03 2017-08-03 A kind of automatic calibration device of fexible film array pressure sensor Active CN207114092U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107290104A (en) * 2017-08-03 2017-10-24 西安建筑科技大学 A kind of automatic calibration device and scaling method of fexible film array pressure sensor
CN112179561A (en) * 2020-09-17 2021-01-05 五邑大学 Pressure sensor array calibration method, device and equipment
CN112484916A (en) * 2020-11-27 2021-03-12 北京航天计量测试技术研究所 Temperature response characteristic calibration method for patch type pressure sensor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107290104A (en) * 2017-08-03 2017-10-24 西安建筑科技大学 A kind of automatic calibration device and scaling method of fexible film array pressure sensor
CN107290104B (en) * 2017-08-03 2023-05-16 西安建筑科技大学 Automatic calibration device and calibration method for flexible film array pressure sensor
CN112179561A (en) * 2020-09-17 2021-01-05 五邑大学 Pressure sensor array calibration method, device and equipment
CN112484916A (en) * 2020-11-27 2021-03-12 北京航天计量测试技术研究所 Temperature response characteristic calibration method for patch type pressure sensor

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Assignee: Shaanxi Zhen'an Technology Transfer Information Technology Co.,Ltd.

Assignor: XIAN University OF ARCHITECTURE AND TECHNOLOG

Contract record no.: X2023980046774

Denomination of utility model: An automatic calibration device for flexible thin film array pressure sensors

Granted publication date: 20180316

License type: Common License

Record date: 20231110

EE01 Entry into force of recordation of patent licensing contract