CN204142417U - A kind of car force sensor endurance testing device - Google Patents

A kind of car force sensor endurance testing device Download PDF

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Publication number
CN204142417U
CN204142417U CN201420453470.9U CN201420453470U CN204142417U CN 204142417 U CN204142417 U CN 204142417U CN 201420453470 U CN201420453470 U CN 201420453470U CN 204142417 U CN204142417 U CN 204142417U
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China
Prior art keywords
data acquisition
valve
pressure sensor
acquisition unit
unit
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Expired - Fee Related
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CN201420453470.9U
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Chinese (zh)
Inventor
谭翠兰
何立言
刘慧琳
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Jianghan University
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Jianghan University
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Abstract

The utility model discloses a kind of car force sensor endurance testing device, relate to sensor performance pick-up unit field.Described device comprises air compressor machine, tracheae, gas admittance valve, testing pressure sensor, standard pressure transmitter, vent valve, control module, data acquisition unit, isolation converting unit and digital signal processing unit; Described tracheae is connected with the output terminal of described air compressor machine, and described gas admittance valve, described testing pressure sensor, described standard pressure transmitter and described vent valve are successively set on described tracheae from described air compressor machine side; Described isolation converting unit is electrically connected with described testing pressure sensor and described standard pressure transmitter; Described data acquisition unit is electrically connected with described isolation converting unit; Described control module is electrically connected with described data acquisition unit; Described digital signal processing unit is electrically connected with described data acquisition unit; Described gas admittance valve and described vent valve are electrically connected with described digital signal processing unit respectively.

Description

A kind of car force sensor endurance testing device
Technical field
The utility model relates to sensor performance pick-up unit technical field, particularly a kind of car force sensor endurance testing device.
Background technology
In car consumption credit process, multiple performance parameter all can be used pressure and weigh, and pressure adopts pressure transducer to measure usually.The sensitive element of pressure transducer is generally strain chip, and in Long-Time Service process, corresponding change can occur the foil gauge of pressure transducer, finally causes the appearance occurring measuring inaccurate phenomenon.
In prior art, in order to prevent because the change of foil gauge causes pressure transducer to measure inaccurate phenomenon, after pressure transducer uses certain hour, usually pressure transducer is placed on the enterprising rower of pressure sensor calibration system fixed, thus determines that whether the duty of this pressure transducer is normal.
Realizing in process of the present utility model, inventor finds that prior art at least exists following problem:
Be roughly judge according to experience in the industry the service time that pressure transducer may break down in prior art, then use calibration system to judge the precision of pressure transducer, can not well hold the serviceable life of pressure transducer.
Utility model content
In order to solve the problem of prior art, the utility model embodiment provides a kind of car force sensor endurance testing device.Technical scheme is as follows:
The utility model embodiment provides a kind of car force sensor endurance testing device, and described device comprises: air compressor machine, tracheae, gas admittance valve, testing pressure sensor, standard pressure transmitter, vent valve, control module, data acquisition unit, isolation converting unit and digital signal processing unit;
Described tracheae is connected with the output terminal of described air compressor machine, and described gas admittance valve, described testing pressure sensor, described standard pressure transmitter and described vent valve are successively set on described tracheae from described air compressor machine side;
Described isolation converting unit is electrically connected with described testing pressure sensor and described standard pressure transmitter, the electric signal isolation that described testing pressure sensor and described standard pressure transmitter export is converted to the signaling mode that described data acquisition unit can process; Described data acquisition unit is electrically connected with described isolation converting unit, gathers the electric signal that described isolation converting unit exports; Described control module is electrically connected with described data acquisition unit, receives numerical signal that described data acquisition unit exports and is converted into pressure value signal and analyzes life-span of described testing pressure sensor; Described digital signal processing unit is electrically connected with described data acquisition unit, receives and changes the control signal that the described control module that transmits via described data acquisition unit exports; Described gas admittance valve and described vent valve are electrically connected with described digital signal processing unit respectively, receive and perform described digital signal processing unit export control signal.
Further, described device is also provided with gas admittance valve for subsequent use and backup vent valve, described gas admittance valve for subsequent use to be located between described air compressor machine and described testing pressure sensor and in parallel with described gas admittance valve, and described backup vent valve and described standard pressure transmitter are connected via described tracheae and in parallel with described vent valve.
Further, described gas admittance valve, vent valve, gas admittance valve for subsequent use and backup vent valve are all solenoid valves.
Further, described isolation converting unit comprises current/voltage isolation converting unit and multichannel isolation converting unit, described current/voltage isolation converting unit is electrically connected with described standard pressure transmitter and described data acquisition unit respectively, and described multichannel isolation converting unit is electrically connected with described testing pressure sensor and described data acquisition unit respectively.
Further, described multichannel isolation converting unit is provided with multiple interface, and described testing pressure sensor setting has multiple, and each described testing pressure sensor matching connects a described interface.
Further, described device is provided with acousto-optic warning unit, and described acousto-optic warning unit is connected with described digital signal processing unit, receives the alarm command of described control module output and reports to the police.
Further, tracheae is used to be connected with reduction valve between described air compressor machine and described gas admittance valve.
Preferably, described control module is personal computer.
Preferably, described data acquisition unit is peripheral component interconnect standard form data collecting card.
Preferably, described tracheae is the red copper tracheae that diameter is less than 4mm.
The beneficial effect of the technical scheme that the utility model embodiment provides is:
By control gas admittance valve, vent valve, periodic constant impingement test is carried out to testing pressure sensor, the measurement data being in testing pressure sensor under same pressure environment and standard pressure transmitter is gathered while impulse test, accurately can judge the measuring accuracy of testing pressure sensor, effectively detect the mission life of testing pressure sensor.
Accompanying drawing explanation
Fig. 1 is the apparatus structure schematic diagram of a kind of car force sensor endurance testing device that the utility model embodiment provides;
Fig. 2 is that a kind of car force sensor endurance testing device Signal transmissions that the utility model embodiment provides moves towards schematic diagram.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
Embodiment
See Fig. 1, the utility model embodiment provides a kind of car force sensor endurance testing device, and this device comprises: air compressor machine 100, tracheae 200, gas admittance valve 301, testing pressure sensor 401, standard pressure transmitter 402, vent valve 302, control module 500, data acquisition unit 600, isolation converting unit 700 and digital signal processing unit 800.
Wherein, tracheae 200 is connected with the output terminal of air compressor machine 100, and gas admittance valve 301, testing pressure sensor 401, standard pressure transmitter 402 and vent valve 302 are successively set on tracheae 200 from air compressor machine 100 side.
Isolation converting unit 700 is electrically connected with testing pressure sensor 401 and standard pressure transmitter 402, the electric signal isolation that testing pressure sensor 401 and standard pressure transmitter 402 export is converted to the signaling mode that data acquisition unit 600 can process; Data acquisition unit 600 is electrically connected with isolation converting unit 700, gathers the electric signal that isolation converting unit 700 exports; Control module 500 is electrically connected with data acquisition unit 600, receives numerical signal that data acquisition unit 600 exports and is converted into pressure value signal and analyzes life-span of testing pressure sensor 401; Digital signal processing unit 800 is electrically connected with data acquisition unit 600, receive and change via data acquisition unit 600 transmit control module 500 export control signal; Gas admittance valve 301 and vent valve 302 are electrically connected with digital signal processing unit 800 respectively, receive and the control signal of combine digital signal processing unit 800 output.It should be noted that, in the present embodiment, signaling mode and signal standards, refer to type and the numerical value of the signal transmission that instrument adopts.
Further, the proving installation that the present embodiment provides also is provided with gas admittance valve 303 for subsequent use and backup vent valve 304, gas admittance valve 303 for subsequent use to be located between air compressor machine 100 and testing pressure sensor 401 and in parallel with gas admittance valve 301, backup vent valve 303 and standard pressure transmitter 402 are connected via tracheae 200 and in parallel with vent valve 302, and gas admittance valve 303 for subsequent use and backup vent valve 304 can be used alternatingly with gas admittance valve 301 and vent valve 302.
Further, gas admittance valve 301, vent valve 302, gas admittance valve for subsequent use 303 and backup vent valve 304 are all solenoid valves.
Particularly, solenoid valve is used to be convenient to the Automated condtrol realizing impulse test, in the impulse test cycle, what adopt is that solenoid valve obtains electric mode to realize pressurize, solenoid valve can be caused to generate heat under normal time high load capacity uses, easy damage electromagnet, if only arrange one group of gas admittance valve 301 and vent valve 302, measuring accuracy and the testing efficiency of this device can be affected after continuous firing a period of time, therefore adopt one group of gas admittance valve 303 for subsequent use and backup vent valve 304 to switch and make, for ensureing the long process of the test continued, to improve the serviceable life of these electromagnetism valve members.
Further, isolation converting unit 700 comprises current/voltage isolation converting unit 701 and multichannel isolation converting unit 702, current/voltage isolation converting unit 701 is electrically connected with standard pressure transmitter 402 and data acquisition unit 600 respectively, and multichannel isolation converting unit 702 is electrically connected with testing pressure sensor 401 and data acquisition unit 600 respectively.
Particularly, the electric signal that current/voltage isolation converting unit 701 exports for isolating transfer standard pressure unit 402, the electric signal that multichannel isolation converting unit 702 exports for isolating conversion testing pressure sensor 401, the current signal of the present embodiment Plays pressure unit 402 outputting standard 4 ~ 20mA, the voltage signal that this signal is converted to 1 ~ 5V after current/voltage isolation module processing delivers to data acquisition unit 600, through isolation conversion after signal could gather by data acquisition unit 600, signal can be realized isolate and prevent extraneous electromagnetic from disturbing simultaneously.
Further, multichannel isolation converting unit 702 is provided with multiple interface, and testing pressure sensor 401 is provided with multiple, and each testing pressure sensor 401 mates connection interface.
Further, the proving installation that the present embodiment provides is provided with acousto-optic warning unit 1001, and acousto-optic warning unit 1001 is connected with digital signal processing unit 800, and the alarm command that reception control unit 500 exports also is reported to the police.Control module 500 analyze there is underproof testing pressure sensor 401 time, by the instruction of control module 500 output alarm control acousto-optic warning unit 1001 report to the police.
Further, tracheae 200 is used to be connected with reduction valve 900 between air compressor machine 100 and gas admittance valve 301, reduction valve 900 is by regulating, the pressure that air compressor machine 100 place comes can be reduced to the top hole pressure of needs, allow between gas admittance valve 301 and vent valve 302 and form stable pressure environment so that detection control.
Preferably, control module 500 is personal computer (PC, Personal Computer), easily knows, is not limited to PC herein, also can be PLC (Programmable Logic Controller, programmable logic controller (PLC)) etc.Control module 500 is for receiving testing pressure sensor 401 and the output valve of standard pressure transmitter 402 after isolation converting unit 700 processes of data acquisition unit 600 collection, the difference of the testing pressure of comparative analysis simultaneously sensor 401 and standard pressure transmitter 402 pressure measurement force value, when difference exceedes a certain preset value, judge that this testing pressure sensor 401 breaks down.After testing experiment starts, control module 500 can record test period and test period number, the test period experienced and test period, reflects the life-span of this sensor when a certain testing pressure sensor 401 breaks down.Simultaneously control module 500 is also for gas admittance valve 301 and vent valve 302 sending controling instruction, the automatic control of property performance period.
Preferably, data acquisition unit 600 is peripheral component interconnect standard (PCI, Peripheral ComponentInterconnect) type data collecting card, easily knows, be not limited to use pci data capture card, also can be Ethernet data capture card etc. herein.Adopt the PCI8602 multi-channel data acquisition board that Altay company produces in the present embodiment, this card is a kind of data collecting card based on pci bus, can directly be inserted in the arbitrary PCI slot in IBM-PC/AT or computing machine compatible with it.PCI8602 has nearly 32 road AD passages, in the present embodiment, wherein the input signal of a road collection standard pressure transmitter 402 calculates the theoretical voltage value of testing pressure sensor 401 as standard source, and remaining 31 tunnels can be used for the real output signal simultaneously gathering multiple pressure transducer.
Preferably, tracheae 200 can be less than the red copper tracheae of 4mm for diameter, and the pneumatic element of device and associated pipe need to bear the overload impact being not less than 5.0MPa air pressure.Easily know, the size material of above-mentioned tracheae is only as preferably a kind of, and the element that other can be used to meet pressure-bearing demand replaces.
In the car force sensor endurance testing device that the utility model embodiment 1 provides, gas admittance valve 301 and vent valve 302, as conventional valve, control the impulse test cycle of testing pressure sensor 401; Gas admittance valve for subsequent use 303 in parallel and backup vent valve 304 act on one group of make-up valve, and two groups of solenoid valves are used alternatingly, and alternate cycle can set on control module 500; Inflation, pressurize, discharge this time needed for three processes and also can set in control module 500.Open air compressor machine 100 before impulse test starts and regulate reduction valve 900, after obtaining suitable top hole pressure, locking reduction valve 900.Open for conventional valve group, in impulse test, as shown in Figure 2, the concrete cyclic process of impulse test is as follows for Signal transmissions trend:
Gas replenishment process, gas admittance valve 301 is opened, vent valve 302 is closed, air pressure level now between gas admittance valve 301 and vent valve 302 continues to raise, the simulating signal sensed is sent to isolation converting unit 700 by testing pressure sensor 401 and standard pressure transmitter 402, carries out isolation and converts the receptible signaling mode of pci data capture card to; Then each group of Signal transmissions after conversion is carried out analysis contrast to control module 500 by data acquisition unit 600.When inflationtime presetting in control module 500 then, control module 500 sends pressurize instruction to pci data capture card, and the signal received is processed the corresponding solenoid valve of rear drive through digital signal processing unit 800 and carries out pressurize operation by pci data capture card;
Pressure maintaining period, gas admittance valve 301 cuts out, vent valve 302 is closed, and the air pressure now between gas admittance valve 301 and vent valve 302 reaches balanced steady state, and the force value that testing pressure sensor 401 and standard pressure transmitter 402 are surveyed should be in basic invariant state.Arrive when the dwell time that control module 500 sets, control module 500 sends and releases order to pci data capture card, and the signal received is processed the corresponding solenoid valve of rear drive through digital signal processing unit 800 and carries out releasing operation by pci data capture card;
Dispose procedure, gas admittance valve 301 cuts out, vent valve 302 is opened, and the air pressure level now between gas admittance valve 301 and vent valve 302 continues to reduce.After the inflationtime of control module 500 setting arrives, this impulse test end cycle, if testing pressure sensor 401 pressure measurement force value do not go beyond the scope with standard pressure transmitter 402, then represents that the duty of testing pressure sensor 401 is normal.Following control module 500 sends inflation instruction to pci data capture card, enters the next impulse test cycle.
The endurance testing device that the utility model embodiment provides carries out periodic constant impingement test by control gas admittance valve, vent valve to testing pressure sensor, the measurement data being in testing pressure sensor under same pressure environment and standard pressure transmitter is gathered while impulse test, accurately can judge the measuring accuracy of testing pressure sensor, effectively detect the mission life of testing pressure sensor.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.

Claims (10)

1. a car force sensor endurance testing device, is characterized in that, described device comprises:
Air compressor machine, tracheae, gas admittance valve, testing pressure sensor, standard pressure transmitter, vent valve, control module, data acquisition unit, isolation converting unit and digital signal processing unit;
Described tracheae is connected with the output terminal of described air compressor machine, and described gas admittance valve, described testing pressure sensor, described standard pressure transmitter and described vent valve are successively set on described tracheae from described air compressor machine side;
Described isolation converting unit is electrically connected with described testing pressure sensor and described standard pressure transmitter, the electric signal isolation that described testing pressure sensor and described standard pressure transmitter export is converted to the signaling mode that described data acquisition unit can process; Described data acquisition unit is electrically connected with described isolation converting unit, gathers the electric signal that described isolation converting unit exports; Described control module is electrically connected with described data acquisition unit, receives numerical signal that described data acquisition unit exports and is converted into pressure value signal and analyzes life-span of described testing pressure sensor; Described digital signal processing unit is electrically connected with described data acquisition unit, receives and changes the control signal that the described control module that transmits via described data acquisition unit exports; Described gas admittance valve and described vent valve are electrically connected with described digital signal processing unit respectively, receive and perform described digital signal processing unit export control signal.
2. device according to claim 1, it is characterized in that, described device is also provided with gas admittance valve for subsequent use and backup vent valve, described gas admittance valve for subsequent use to be located between described air compressor machine and described testing pressure sensor and in parallel with described gas admittance valve, and described backup vent valve and described standard pressure transmitter are connected via described tracheae and in parallel with described vent valve.
3. device according to claim 2, is characterized in that, described gas admittance valve, vent valve, gas admittance valve for subsequent use and backup vent valve are all solenoid valves.
4. device according to claim 1, it is characterized in that, described isolation converting unit comprises current/voltage isolation converting unit and multichannel isolation converting unit, described current/voltage isolation converting unit is electrically connected with described standard pressure transmitter and described data acquisition unit respectively, and described multichannel isolation converting unit is electrically connected with described testing pressure sensor and described data acquisition unit respectively.
5. device according to claim 4, is characterized in that, described multichannel isolation converting unit is provided with multiple interface, and described testing pressure sensor setting has multiple, and each described testing pressure sensor matching connects a described interface.
6. the device according to any one of claim 1-5, is characterized in that, described device is provided with acousto-optic warning unit, and described acousto-optic warning unit is connected with described digital signal processing unit, receives the alarm command of described control module output and reports to the police.
7. the device according to any one of claim 1-5, is characterized in that, uses tracheae to be connected with reduction valve between described air compressor machine and described gas admittance valve.
8. the device according to any one of claim 1-5, is characterized in that, described control module is personal computer.
9. the device according to any one of claim 1-5, is characterized in that, described data acquisition unit is peripheral component interconnect standard form data collecting card.
10. the device according to any one of claim 1-5, is characterized in that, described tracheae is the red copper tracheae that diameter is less than 4mm.
CN201420453470.9U 2014-08-13 2014-08-13 A kind of car force sensor endurance testing device Expired - Fee Related CN204142417U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106797847A (en) * 2016-10-24 2017-06-06 中国路桥工程有限责任公司 A kind of rainer
CN107894301A (en) * 2017-12-15 2018-04-10 芜湖致通汽车电子有限公司 A kind of vacuum pressure sensor experimental rig and method
CN108151962A (en) * 2017-12-15 2018-06-12 芜湖致通汽车电子有限公司 A kind of method and its testing machine of positive-pressure type simulation vacuum test
CN109186721A (en) * 2018-09-08 2019-01-11 芜湖乐佳电器有限公司 A kind of water level sensor leak detection method
CN111442877A (en) * 2020-04-30 2020-07-24 中铁工程装备集团有限公司 Sensor life test system and working method
CN112166312A (en) * 2018-05-28 2021-01-01 希奥检测有限公司 Sensor device and method for operating a sensor device
CN112629575A (en) * 2019-09-24 2021-04-09 罗斯蒙特公司 Process variable sensor testing
CN112990542A (en) * 2021-02-05 2021-06-18 深圳市浦联智能科技有限公司 Service life prediction method for air compressor

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106797847A (en) * 2016-10-24 2017-06-06 中国路桥工程有限责任公司 A kind of rainer
CN107894301A (en) * 2017-12-15 2018-04-10 芜湖致通汽车电子有限公司 A kind of vacuum pressure sensor experimental rig and method
CN108151962A (en) * 2017-12-15 2018-06-12 芜湖致通汽车电子有限公司 A kind of method and its testing machine of positive-pressure type simulation vacuum test
CN112166312A (en) * 2018-05-28 2021-01-01 希奥检测有限公司 Sensor device and method for operating a sensor device
CN112166312B (en) * 2018-05-28 2022-03-22 希奥检测有限公司 Sensor device and method for operating a sensor device
US11454562B2 (en) 2018-05-28 2022-09-27 Sciosense B.V. Sensor arrangement and method of operating a sensor arrangement
CN109186721A (en) * 2018-09-08 2019-01-11 芜湖乐佳电器有限公司 A kind of water level sensor leak detection method
CN112629575A (en) * 2019-09-24 2021-04-09 罗斯蒙特公司 Process variable sensor testing
CN112629575B (en) * 2019-09-24 2023-10-17 罗斯蒙特公司 Process variable sensor testing
CN111442877A (en) * 2020-04-30 2020-07-24 中铁工程装备集团有限公司 Sensor life test system and working method
CN112990542A (en) * 2021-02-05 2021-06-18 深圳市浦联智能科技有限公司 Service life prediction method for air compressor

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