CN216246994U

CN216246994U - Pressure sensor testing device

Info

Publication number: CN216246994U
Application number: CN202122393369.1U
Authority: CN
Inventors: 吴万华; 陈海牛; 杨爽; 孙晓明; 敬宏; 任艳丽; 钱西盈; 谭耀兰; 刘强; 余潇
Original assignee: Chengdu Guoying Jinjiang Machine Factory
Current assignee: Chengdu Guoying Jinjiang Machine Factory
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-04-08
Anticipated expiration: 2031-09-30

Abstract

The utility model provides a pressure sensor testing device, which comprises a testing module integrated in a box body, wherein the testing module comprises an interface module, a display module, a conversion control module and a power supply module; the utility model discloses a can accomplish the compatible detection to GY-79, GY-59A and GY-60A pressure sensor, solve the input of existing equipment, output interface signal and GY-79, GY-59A and GY-60A pressure sensor can't match, can't accomplish the problem that the compatibility of this three type sensors detected.

Description

Pressure sensor testing device

Technical Field

The utility model relates to a testing device, in particular to a pressure sensor testing device.

Background

The GY-79 and GY-59A, GY-60A pressure sensors are respectively used for measuring the pressure of the sliding oil and the hydraulic system on the machine, outputting direct-current voltage signals in direct proportion to the measured pressure and sending the direct-current voltage signals to the engine parameter acquisition and display system. The three-type pressure sensor is a piezoresistive effect sensor manufactured on the basis of the principle that a monocrystalline silicon material has a piezoresistive effect. On the specific crystal face of the monocrystalline silicon, a specific crystal orientation is selected, a group of piezoresistors are manufactured by adopting a semiconductor plane process and connected to form a Wheatstone bridge, when the silicon diaphragm is acted by a pressure signal, the resistance value of a pair of bridge arms of the bridge is increased, the influence on the resistance value of the bridge arms is reduced, and the change of the resistance value is in direct proportion to the pressure. When the bridge is supplied with exciting current, the resistance value can be converted into a voltage signal, and the voltage value cannot meet the output requirement of a product, and the voltage value must be processed to reach the required value. The output voltage is in direct proportion to the pressure, so that the purpose of measuring the pressure is achieved.

The existing pressure sensor tester is used for detecting the traditional diaphragm capsule type pressure sensor, and because the working principle of the diaphragm capsule type pressure sensor is completely different from that of the piezoresistive effect sensor, the input and output interface signals of the existing equipment cannot be matched with GY-79 and GY-59A, GY-60A pressure sensors, and the compatibility detection of the three types of sensors cannot be completed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pressure sensor test device, which can complete the compatible detection of GY-79, GY-59A and GY-60A pressure sensors and solve the problem that the input and output interface signals of the existing equipment can not be matched with the GY-79, GY-59A and GY-60A pressure sensors and can not complete the compatible detection of the three sensors.

The utility model is realized by the following technical scheme:

a pressure sensor test device is characterized by comprising a box body and a test module integrated in the box body, wherein the test module comprises an interface module, a display module, a conversion control module and a power supply module; the power supply module comprises a DC28V power supply module and a DC10V power supply module; the display module comprises a first display module and a second display module; the DC28V power module is connected with the first display module to form a first test circuit; the DC10V power supply module is connected with the second display module to form a second test circuit; the interface module comprises a GY-79 interface, a GY-59A interface and a GY-60A interface; the conversion control module comprises a K4 control switch and a K5 conversion switch; the input end of the GY-79 interface is connected with the second test circuit; the K4 control switch controls the on-off of the second test circuit trunk circuit; the fixed contact of the K5 change-over switch is connected with the first test circuit, one movable contact is connected with the input end of the GY-59A interface, and the other movable contact is connected with the input end of the GY-60A interface; the interface module, the display module and the conversion control module are arranged on an operation panel of the box body.

GY-59A is used for externally connecting a GY-59A pressure sensor; GY-60A is used for externally connecting a GY-60A pressure sensor; GY-79A is used for external GY-79A pressure sensor. (ii) a The K5 change-over switch selects and turns on the GY-59A or GY-60A pressure sensor test circuit. The DC28V power supply module provides a direct current 28V voltage signal for the GY-59A, GY-60A pressure sensor; the DC10V power module provides a DC10V voltage signal for the GY-79 pressure sensor.

The utility model is externally connected with a pressure sensor, the change-over switch is correspondingly adjusted according to the model, and a pressure comparator provides a pressure signal to test the pressure sensor.

Furthermore, the interface module also comprises a GY-59/60A output detection interface and a GY-79 output detection interface; the conversion control module also comprises a K6 conversion switch, and the output end of the GY-79 interface is connected with the GY-79 output detection interface; the fixed contact of the K6 change-over switch is connected with the GY-59/60A output detection interface, one movable contact is connected with the output end of the GY-59A interface, and the other movable contact is connected with the output end of the GY-60A interface.

The voltage detection precision of the utility model to the output voltage is higher, GY-59/60A output detection interface connects the digital universal meter externally to measure and display the output voltage of GY-59 or GY-60A pressure sensor; the GY-79A output detection interface is externally connected with a digital universal meter to measure and display the output voltage of the GY-79A pressure sensor. The K6 change-over switch selects and turns on the GY-59A or GY-60A pressure sensor output voltage test circuit.

Further, the first display module comprises a first direct current voltmeter for measuring and displaying the output voltage of the DC28V power supply module and a first direct current ammeter for measuring and displaying the main circuit current of the first test circuit; the second display module comprises a second direct current voltage meter for measuring and displaying the output voltage of the DC10V power supply module and a second direct current ammeter for measuring and displaying the main circuit current of the second test circuit.

Further, the conversion control module further includes a K7 conversion switch and a K8 conversion switch, and the interface module further includes a first direct current voltmeter interface, a first direct current ammeter interface, a second direct current voltmeter interface, and a second direct current ammeter interface; the fixed contact of the K7 change-over switch is connected with the DC28V power supply module, one movable contact is connected with the first direct current ammeter interface, and the other movable contact is connected with the first direct current ammeter; and a fixed contact of the K8 change-over switch is connected with the DC10V power supply module, one movable contact is connected with the interface of the second direct current ammeter, and the other movable contact is connected with the second direct current ammeter.

The first direct current voltmeter interface, the first direct current ammeter interface, the second direct current voltmeter interface and the second direct current ammeter interface are voltmeter or ammeter metering interfaces arranged on the operation panel, online metering can be achieved, and the voltmeter and the ammeter do not need to be detached. The K7 change-over switch and the K8 change-over switch are used for selecting and connecting the ammeter or the ammeter metering interface.

Further, the power supply module further comprises an AC220V power supply interface disposed on the power supply interface panel of the box body; the DC28V power modules include AC220V-DC28V power modules; the DC10V power modules include AC220V-DC10V power modules; the conversion control module further comprises a K1 control switch, a 28V voltage adjusting knob and a 10V voltage adjusting knob; the AC220V power interface is respectively connected with the AC220V-DC28V power module and the AC220V-DC10V power module through the K1 control switch.

The AC220V-DC28V power supply module converts a 220V alternating current power supply input by an external power supply into 28V direct current voltage and outputs the voltage, the AC220V-DC10V power supply module converts a 220V alternating current power supply input by the external power supply into 10V direct current voltage and outputs the voltage, and the two voltages can be correspondingly adjusted through a 28V voltage adjusting knob or a 10V voltage adjusting knob on an operation panel; the K1 control switch is an external 220V alternating current power supply control switch.

Further, the DC28V power module further includes a DC28V power interface; the DC10V power module further includes a DC10V power interface; the DC28V power interface and the DC10V power interface are arranged on the power interface panel; the conversion control module further comprises a K2 conversion switch and a K3 conversion switch; the fixed contact of the K2 change-over switch is connected with the first display module, one movable contact is connected with the DC28V power interface, and the other movable contact is connected with the AC220V-DC28V power module; the fixed contact of the K3 change-over switch is connected with the second display module, one movable contact is connected with the DC10V power interface, and the other movable contact is connected with the AC220V-DC10V power module.

The DC28V power interface and the DC10V power interface are used for externally connecting a direct current power supply, and the K2 change-over switch and the K3 change-over switch are used for selectively connecting the power supply with the display module according to different power supply modes.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1. the utility model can carry out compatible detection on the pressure sensors of three types, namely GY-79, GY-59A and GY-60A; in the prior art, because the working principle of the diaphragm capsule type pressure sensor is completely different from that of the piezoresistive effect sensor, the input and output interface signals of the equipment cannot be matched with the GY-79 and GY-59A, GY-60A pressure sensors, and the compatibility detection of the three types of sensors cannot be completed.

2. The utility model discloses an utilize the modulus to combine, realize detecting three type pressure sensor each item functions and performance on the inner scene, formed this type product off-position check-up and repair troubleshooting ability, promoted helicopter maintenance efficiency, reached the purpose of effective guarantee.

3. The utility model reserves the metering interface of the voltmeter and the ammeter, can realize online metering and does not need to disassemble the voltmeter and the ammeter.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of an operation panel according to the present invention;

FIG. 3 is a schematic diagram of a power interface panel according to the present invention;

fig. 4 is an electrical schematic of the present invention.

Reference numbers and corresponding part names in the drawings:

11-GY-79 interface, 12-GY-59A interface, 13-GY-60A interface, 14-GY-59/60A output detection interface, 15-GY-79 output detection interface, 101-first direct current voltmeter interface, 102-first direct current ammeter interface, 103-second direct current voltmeter interface, 104-second direct current ammeter interface, 21-first direct current voltmeter, 22-first direct current ammeter, 23-second direct current voltmeter, 24-second direct current ammeter, 31-K1 control switch, 32-K2 switch, 33-K3 switch, 34-K4 control switch, 35-K5 switch, 36-K6 switch, 37-K7 switch, 38-K8 switch, a voltage adjusting knob of 301-28V, a voltage adjusting knob of 302-10V, a power interface of 41-AC220V, a power interface of 42-DC10V and a power interface of 43-DC 28V.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Referring to fig. 1 to 3, the present embodiment includes a testing module integrated in a box, where the testing module includes an interface module, a display module, a conversion control module, and a power module; the interface module comprises a GY-79 interface 11, a GY-59A interface 12, a GY-60A interface 13, a GY-59/60A output detection interface 14, a GY-79 output detection interface 15, a first direct current voltmeter interface 101, a first direct current ammeter interface 102, a second direct current voltmeter interface 103 and a second direct current ammeter interface 104; the display module 2 comprises a first direct current voltmeter 21, a first direct current ammeter 22, a second direct current voltmeter 23 and a second direct current ammeter 24; the conversion control module comprises a K1 control switch 31, a K2 conversion switch 32, a K3 conversion switch 33, a K4 control switch 34, a K5 conversion switch 35, a K6 conversion switch 36, a K7 conversion switch 37, a K8 conversion switch 38, a 28V voltage adjusting knob 301 and a 10V voltage adjusting knob 302; the power modules include a DC28V power module, a DC10V power module, an AC220V power interface 41, a DC10V power interface 42, and a DC28V power interface 43. The interface module, the display module and the conversion control module are arranged on an operation panel of the box body; the AC220V power interface 41, the DC10V power interface 42 and the DC28V power interface 43 are disposed on the power interface panel of the box.

Referring to fig. 4, the DC28V power module is connected to the first display module to form a first test circuit; the DC10V power supply module is connected with the second display module to form a second test circuit;

one end of the K1 control switch 31 is connected with the AC220V power interface 41, and the other end is respectively connected with the AC220V-DC28V power module and the AC220V-DC10V power module; the fixed contact of the K2 change-over switch 32 is connected with the first display module, one movable contact is connected with the DC28V power interface 43, and the other movable contact is connected with the AC220V-DC28V power module; the fixed contact of the K3 change-over switch 33 is connected with the second display module, one movable contact is connected with the DC10V power interface 42, and the other movable contact is connected with the AC220V-DC10V power module; the K4 control switch controls the on-off of the second test circuit trunk circuit; the fixed contact of the K5 change-over switch 35 is connected with the first test circuit, one movable contact is connected with the GY-59A interface 12, and the other movable contact is connected with the GY-60A interface 13; the fixed contact of the K6 change-over switch 36 is connected with a GY-59/60A output detection interface 14, one movable contact is connected with a GY-59A interface 12, and the other movable contact is connected with a GY-60A interface 13; the fixed contact of the K7 change-over switch is connected with a DC28V power supply module, one movable contact is connected with the first DC current meter interface 102, and the other movable contact is connected with the first DC current meter 22; the fixed contact of the K8 transfer switch 38 is connected to the DC10V power supply module, one movable contact is connected to the second DC current meter interface 324, and the other movable contact is connected to the second DC current meter 24.

The first direct current voltmeter is used for measuring and displaying the output voltage of the DC28V power supply module; the first direct current ammeter is used for measuring and displaying the main circuit current of the first test circuit; the second direct current voltmeter is used for measuring and displaying the output voltage of the DC10V power supply module; and the second direct current ammeter is used for measuring and displaying the trunk circuit current of the second test circuit.

The 28V voltage adjustment knob 301 is used to control the AC220V-DC28V power module, and the 10V voltage adjustment knob 302 is used to control the AC220V-DC10V power module.

In the embodiment, an AC220V-DC28V power module or an AC220V-DC10V power module is used for converting a 220V/50Hz alternating current power supply into a 28V direct current voltage or a 10V direct current voltage to be used as a working power supply of a tested product, and the two voltages can be directly adjusted by a 28V voltage adjusting knob 301 or a 10V voltage adjusting knob 302 on an operation panel. The two DC power supplies can also be provided by an external DC power supply through the DC28V power interface 43 or the DC10V power interface 42, the K2 change-over switch and the K3 change-over switch on the operation panel can control the power supply mode of the DC power supply, when the DC power supply is connected in an external mode, the internal DC power supply can be automatically disconnected, and the voltage is displayed through the first DC voltmeter 21 or the second DC voltmeter 23. The tester adopts three groups of change-over switches to change over the tested products, and the pressure sensor test can be realized only under the control of the corresponding switches. The pressure sensor input pressure signal is provided by a pressure comparator.

In the detection of the output voltage, the voltage detection precision is high, and the output voltage of the pressure sensor of the corresponding model is detected by connecting a digital multimeter with a GY-59/60A output detection interface 14 or a GY-79 output detection interface 15 on an operation panel.

The first direct current voltmeter interface 101, the first direct current ammeter interface 102, the second direct current voltmeter interface 103 and the second direct current ammeter interface 104 on the operation panel are metering interfaces of an ammeter or a voltmeter and are used for online metering.

The test voltage of the three-type sensor insulation resistance is direct current 25V, and an outsourcing insulation tester is required for testing.

The specific use procedure of this embodiment is as follows (taking test of the GY-59A pressure sensor as an example, default to external 220V ac power supply): the electrical interface of the GY-59A pressure sensor is connected with the GY-59A interface 12, the pressure connector is connected with the pressure comparator, and the digital multimeter is connected with the GY-59/60A output detection interface 14. The control K2 change-over switch 32 connects the AC220V-DC28V power module with the first display module, the control K5 change-over switch 35 connects the GY-59A interface 12 with the first test circuit, the control K6 change-over switch 36 connects the GY-59A interface 12 with the GY-59/60A output detection interface 14, the control K7 change-over switch 37 connects the first DC ammeter 22 with the DC28V power module, and the control K2 control switch connects the external 220V AC power with the AC220V-DC28V power module. The 28V voltage adjustment knob 301 is adjusted to make the voltage value displayed by the first dc voltmeter 21 be in the range of (28 ± 10%) V, and the current value displayed by the first dc ammeter 22 should be less than 0.18A. Then the pressure adjustment check points are input by rotating a handle of the pressure comparator, and whether the voltage value displayed on the digital multimeter meets the regulations or not is observed at each pressure check point. And after the inspection is finished, all the switches are restored, and all the connecting wires are disconnected.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A pressure sensor test device is characterized by comprising a box body and a test module integrated in the box body, wherein the test module comprises an interface module, a display module, a conversion control module and a power supply module; the power supply module comprises a DC28V power supply module and a DC10V power supply module; the display module comprises a first display module and a second display module; the DC28V power module is connected with the first display module to form a first test circuit; the DC10V power supply module is connected with the second display module to form a second test circuit; the interface module comprises a GY-79 interface (11), a GY-59A interface (12) and a GY-60A interface (13); the conversion control module comprises a K4 control switch (34) and a K5 conversion switch (35); the input end of the GY-79 interface (11) is connected with the second test circuit; the K4 control switch (34) controls the on-off of the second test circuit trunk; the fixed contact of the K5 change-over switch (35) is connected with the first test circuit, one movable contact is connected with the input end of the GY-59A interface (12), and the other movable contact is connected with the input end of the GY-60A interface (13); the interface module, the display module and the conversion control module are arranged on an operation panel of the box body.

2. A pressure sensor testing apparatus as claimed in claim 1, wherein said interface module further comprises a GY-59/60a output detection interface (14) and a GY-79 output detection interface (15); the conversion control module also comprises a K6 conversion switch (36), and the output end of the GY-79 interface (11) is connected with the GY-79 output detection interface (15); the fixed contact of the K6 change-over switch (36) is connected with the GY-59/60A output detection interface (14), one movable contact is connected with the output end of the GY-59A interface (12), and the other movable contact is connected with the output end of the GY-60A interface (13).

3. A pressure sensor testing apparatus according to claim 1, wherein said first display module comprises a first DC voltmeter (21) for measuring and displaying the output voltage of said DC28V power module and a first DC ammeter (22) for measuring and displaying the dry circuit current of said first test circuit; the second display module comprises a second direct current voltmeter (23) used for measuring and displaying the output voltage of the DC10V power supply module and a second direct current ammeter (24) used for measuring and displaying the main circuit current of the second test circuit.

4. A pressure sensor testing device according to claim 1, characterized in that the changeover control module further comprises a K7 changeover switch (37) and a K8 changeover switch (38), the interface module (1) further comprises a first dc voltmeter interface (101), a first dc ammeter interface (102), a second dc voltmeter interface (103) and a second dc ammeter interface (104); the fixed contact of the K7 change-over switch (37) is connected with the DC28V power supply module, one movable contact is connected with the first DC current meter interface (102), and the other movable contact is connected with the first DC current meter (22); the fixed contact of the K8 change-over switch (38) is connected with the DC10V power supply module, one movable contact is connected with the second direct current ammeter interface (104), and the other movable contact is connected with the second direct current ammeter (24).

5. A pressure sensor testing device according to claim 1, characterized in that the power supply module (4) further comprises an AC220V power interface (41) provided on a power interface panel of the case; the DC28V power modules include AC220V-DC28V power modules; the DC10V power modules include AC220V-DC10V power modules; the conversion control module further comprises a K1 control switch (31), a 28V voltage adjusting knob (301) and a 10V voltage adjusting knob (302); the AC220V power interface (41) is connected with the AC220V-DC28V power module and the AC220V-DC10V power module respectively through the K1 control switch (31).

6. A pressure sensor testing apparatus as claimed in claim 5, wherein said DC28V power module further comprises a DC28V power interface (43); the DC10V power module further includes a DC10V power interface (42); the DC28V power interface (43) and the DC10V power interface (42) are disposed on the power interface panel; the conversion control module further comprises a K2 conversion switch (32) and a K3 conversion switch (33); the fixed contact of the K2 change-over switch (32) is connected with the first display module, one movable contact is connected with the DC28V power interface (43), and the other movable contact is connected with the AC220V-DC28V power module; the fixed contact of the K3 switch (33) is connected with the second display module, one movable contact is connected with the DC10V power interface (42), and the other movable contact is connected with the AC220V-DC10V power module.