Testing device of temperature acquisition equipment

Abstract

The utility model discloses a testing device for temperature acquisition equipment. The testing device comprises an upper computer, a programmable power supply, an IO controller, a relay, a first standard resistor and a second standard resistor, the upper computer is connected with the programmable power supply, and the programmable power supply is connected with the temperature acquisition equipment to be tested and supplies power to the temperature acquisition equipment according to rated voltage; the upper computer is further connected with the relay through the IO controller so that the upper computer can send a control instruction to the relay through the IO controller, and the relay is connected with the temperature collecting device, the first standard resistor and the second standard resistor. Therefore, the first standard resistor or the second standard resistor can be switched to be connected with the temperature acquisition equipment according to the control instruction. Through the technical scheme of the utility model, the test of the temperature acquisition equipment is realized, the test accuracy is improved, and the test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit testing, in particular to a testing device for a temperature acquisition device. Background Art

[0002] When testing a temperature acquisition device, a stable temperature signal value is required for test calibration. However, using a temperature probe is greatly affected by environmental factors, it is not easy to stabilize the temperature value, and the temperature change is relatively slow. Content of the Utility Model

[0003] In view of the above problems, the utility model provides a testing device for a temperature acquisition device. By sending instructions from a host computer to switch the first standard resistor and the second standard resistor connected to the temperature acquisition device, and based on the standard resistor, it is judged whether the temperature value corresponding to the electrical signal output by the temperature acquisition device is within the deviation range of the standard value, so as to realize the test of the temperature acquisition device, improve the accuracy of the test and the test efficiency.

[0004] To achieve the above object, the utility model provides a testing device for a temperature acquisition device, including: a host computer, a programmable power supply, an IO controller, a relay, a first standard resistor and a second standard resistor;

[0005] The host computer is connected to the programmable power supply, and the programmable power supply is connected to the temperature acquisition device to be tested, and supplies power to the temperature acquisition device according to the rated voltage;

[0006] The host computer is also connected to the relay through the IO controller, so that the host computer can send control instructions to the relay through the IO controller. The relay is respectively connected to the temperature acquisition device, the first standard resistor and the second standard resistor, and thus can switch the connection between the first standard resistor or the second standard resistor and the temperature acquisition device according to the control instructions.

[0007] In the above technical solution, preferably, the testing device for the temperature acquisition device further includes a control device and a display unit. The control device is connected to the display unit, and the control device is also connected to a temperature signal simulation device, so that the display unit can display the temperature value of the environmental temperature to be simulated by the temperature signal simulation device.

[0008] In the above technical solution, preferably, the first standard resistor and the second standard resistor are fixed-value resistors with different resistance values.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows: By issuing an instruction through the host computer to switch the first standard resistor and the second standard resistor connected to the temperature acquisition device, and based on the standard resistor, it is judged whether the temperature value corresponding to the output electrical signal of the temperature acquisition device is within the deviation range of the standard value, so as to realize the test of the temperature acquisition device, improve the accuracy of the test, and improve the test efficiency. Description of the Drawings

[0010] Figure 1 It is a schematic diagram of the structural connection relationship of a test device for a temperature acquisition device disclosed in an embodiment of the present utility model.

[0011] In the figure, the corresponding relationship between each component and the reference numeral is as follows:

[0012] 1. Host computer, 2. Program-controlled power supply, 3. IO controller, 4. Relay, 5. First standard resistor, 6. Second standard resistor, 7. Temperature acquisition device, 8. Control device, 9. Display unit, 10. Temperature signal simulation device. Detailed Embodiments

[0013] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0014] The following further describes the present utility model in detail with reference to the drawings:

[0015] As Figure 1 shown, a test device for a temperature acquisition device according to the present utility model includes: a host computer 1, a program-controlled power supply 2, an IO controller 3, a relay 4, a first standard resistor 5, and a second standard resistor 6;

[0016] The host computer 1 is connected to the program-controlled power supply 2, and the program-controlled power supply 2 is connected to the temperature acquisition device 7 to be tested to supply power to the temperature acquisition device 7 at the rated voltage;

[0017] The host computer 1 is also connected to the relay 4 through the IO controller 3, so that the host computer 1 can send a control instruction to the relay 4 through the IO controller 3. The relay 4 is respectively connected to the temperature acquisition device 7, the first standard resistor 5, and the second standard resistor 6, so as to be able to switch the connection between the first standard resistor 5 or the second standard resistor 6 and the temperature acquisition device 7 according to the control instruction.

[0018] In this embodiment, the host computer 1 issues an instruction to switch the first standard resistor 5 and the second standard resistor 6 connected to the temperature acquisition device, and based on the standard resistor, it is determined whether the temperature value corresponding to the electrical signal output by the temperature acquisition device 7 is within the standard value deviation range, so as to realize the test of the temperature acquisition device 7, improve the accuracy of the test, and improve the test efficiency.

[0019] Specifically, the power supply environment is a programmable power supply 2 controlled by the host computer 1, which supplies power to the temperature acquisition device 7 at the rated voltage and monitors it.

[0020] During the test, the first standard resistor 5 and the second standard resistor 6 can be fixed-value resistors with different resistance values, such as 100R and 120R fixed-value resistors. During the test process, the host computer 1 outputs a control instruction, and the IO controller 3 is used to execute the control instruction output by the host computer 1. The temperature signal simulates the electrical signal environment through the 100R and 120R fixed-value resistors with high precision and low temperature drift, and the relay 4 is used to switch between the two resistance values, and the standard resistor is used as the evaluation standard for the temperature acquisition device 7.

[0021] In the above embodiment, preferably, the test device of the temperature acquisition device 7 further includes a control device 8 and a display unit 9. The control device 8 is connected to the display unit 9, and the control device 8 is also connected to the temperature signal simulation device 10, so that the display unit 9 can display the temperature value of the environmental temperature to be simulated by the temperature signal simulation device 10.

[0022] During the implementation process, through the simulation of the temperature signal simulation device 10, the temperature acquisition device 7 collects the corresponding electrical signal, and the display unit 9 reads whether the temperature collected by the temperature acquisition device 7 is the temperature value corresponding to the 100R fixed-value resistor. Then, the host computer 1 controls the relay 4 to switch the resistor to the 120R fixed-value resistor through the IO controller 3, and reads whether the temperature collected by the temperature acquisition device 7 is the temperature value corresponding to the 120R fixed-value resistor. By observing whether the temperature value on the display unit 9 is within the deviation range, the test of the temperature acquisition device 7 is completed.

[0023] Specifically, the display unit 9 is the main monitor or the diagnostic monitor, and a CRT monitor, an LCD monitor or an LED monitor is adopted. During the test of the temperature acquisition device 7 of the towing vehicle, its control device 8 is the MPU traction module A, and the necessary peripheral devices of the temperature signal simulation device 10 include the CAB remote input / output module A, the MPU traction module B, the MPU comfort module A, the MPU comfort module B, the gateway 1, the gateway 2, the CAB remote input / output module B, the MC1 / MC2 remote input / output module A / B, the M2S / MH remote input / output module A / B, the traction controller, the relay, the TP / TPB remote input / output module A / B, the CLT remote input / output module, and the M2 remote input / output module A / B.

[0024] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A test device for a temperature acquisition device, characterized in that: include: Host computer, program-controlled power supply, IO controller, relay, first standard resistor and second standard resistor; The host computer is connected to the program-controlled power supply, and the program-controlled power supply is connected to the temperature acquisition device to be tested, supplying power to the temperature acquisition device according to the rated voltage; The host computer is also connected to the relay through the IO controller, so that the host computer can send control instructions to the relay through the IO controller, and the relay is respectively connected to the temperature acquisition device, the first standard resistor and the second standard resistor, so that the first standard resistor or the second standard resistor can be switched to be connected to the temperature acquisition device according to the control instruction.

2. The testing device for temperature acquisition equipment according to claim 1, characterized in that: It also includes a control device and a display unit, wherein the control device is connected to the display unit, and the control device is also connected to a temperature signal simulation device, so that the display unit can display the temperature value of the ambient temperature to be simulated by the temperature signal simulation device.

3. The testing device for temperature acquisition equipment according to claim 1, characterized in that: The first standard resistor and the second standard resistor are fixed-value resistors with different resistance values.

Images