Multi-point temperature sensor rapid detection system and method

Abstract

A detection device of a multi-point temperature sensor comprises a detection table, an intelligent temperature control meter and a control box of a temperature control processor are arranged on the detection table, a guide sliding rail is arranged on the upper end face of the detection table in the length direction, and a plurality of heating devices are sequentially arranged on the guide sliding rail in a sliding fit mode. A thermocouple and an air heater are respectively arranged on each heating device, the thermocouple of each heating device is electrically connected with a temperature control processor, the air heater is connected with an intelligent temperature control meter of the control box through a wire, and each heating device is provided with a support frame for supporting a multi-point temperature sensor. A multi-jack socket used for being connected with the multi-point temperature sensor is arranged on the detection table and connected with the control box temperature control processor through a wire.

Description

Technical Field

[0001] The present invention relates to the technical field of sensor detection, and in particular to a multi-point temperature sensor rapid detection system and method. Background Art

[0002] Multi-point temperature sensor is a key temperature measuring instrument in photovoltaic diffusion furnace. It has many temperature measuring points, usually 3 to 6, long temperature measuring span, usually 3 to 4m, wide working temperature range, in the range of 600 to 1100℃, fast response time, only 6 to 10s, etc., which can meet the temperature measurement needs of photovoltaic equipment. Since multi-point temperature sensor has multiple temperature measuring points distributed over a distance of 3 to 4m, the temperature measuring points are not concentrated in one place. At present, the quality inspection of multi-point temperature sensor is to put each temperature measuring point of multi-point temperature sensor on the inspection equipment one by one for separate inspection. This is because the calibration furnace temperature zone set by the existing inspection equipment is small and cannot reach the span of 3 to 4 meters. Only the single temperature measuring points of multi-point temperature sensor can be inspected one by one. This kind of inspection takes a long time and has low inspection efficiency, which cannot meet the rapid inspection requirements of multi-point temperature sensor. Summary of the invention

[0003] The purpose of the present invention is to provide a multi-point temperature sensor rapid detection system and method to address the corresponding deficiencies in the prior art. The rapid detection system and method of the present invention can realize simultaneous detection and analysis of multiple temperature measurement points of the sensor, with high test efficiency, and can effectively meet the rapid detection requirements of multi-point temperature sensors.

[0004] The objective of the present invention is achieved by adopting the following scheme: A detection device for a multi-point temperature sensor comprises a detection platform, on which a control box provided with an intelligent temperature control meter and a temperature control processor is arranged, a guide rail is arranged on the upper end surface of the detection platform along the length direction, the guide rail is arranged in sequence to slide and cooperate with a plurality of heating devices, each heating device is respectively provided with a thermocouple and a hot air blower, the thermocouple of each heating device is electrically connected to the temperature control processor, the hot air blower is connected to the intelligent temperature control meter of the control box through a wire, the heating devices are all provided with a support frame for supporting the multi-point temperature sensor, a multi-hole socket for connecting the multi-point temperature sensor is arranged on the detection platform, and the multi-hole socket is connected to the temperature control processor of the control box through a wire.

[0005] Preferably, each heating device has two hot air blowers, and the air outlets of the two hot air blowers are arranged facing each other on a support frame. A V-shaped groove is provided in the middle of the support frame, and a thermocouple is uprightly arranged in the V-shaped groove and located between the air outlets of the two hot air blowers. The support frame is provided with positioning grooves for supporting a multi-point temperature sensor on both sides of the upper part of the V-shaped groove.

[0006] Preferably, the air outlet of each hot air blower of each heating device forms an angle of 45 degrees with the upright thermocouple.

[0007] Preferably, the intelligent temperature control meter is provided with a PID regulator, the PID regulator is electrically connected to each hot air blower through a solid-state relay, and the control box adopts a touch display control panel.

[0008] Preferably, a support base for supporting the multi-point temperature sensor is provided on the detection platform between the control box and the heating device on one side close to the control box.

[0009] Preferably, a plurality of slide blocks which can slidably cooperate with the guide rail are arranged on the guide rail, and the bottom of each heating device is fixedly connected to the slide block respectively.

[0010] Preferably, the testing platform is composed of a plurality of platforms fixedly connected, so that the length of the testing platform reaches more than four meters.

[0011] Preferably, the power of each hot air blower is 3000W.

[0012] The detection method of the multi-point temperature sensor comprises the following steps: S1: Arrange the position of the heating device on the testing table according to the spacing of each temperature measuring point on the multi-point temperature sensor to be tested, so that each heating device corresponds to the temperature measuring point of the multi-point temperature sensor to be tested, place the multi-point temperature sensor to be tested on the heating device, and connect the multi-point temperature sensor to the multi-hole socket; S2: Turn on the power, set the target temperature of the hot air blower, start the intelligent temperature control meter, the hot air blower of the heating device starts to work and heat up, and the temperature control processor on the control box synchronously collects the temperature of the hot air area measured by the thermocouples of each heating device and each temperature measuring point of the multi-point temperature sensor to be tested; S3: According to the set data collection frequency, the temperature data collected by the thermocouple and the multi-point temperature sensor are compared each time; S4: The temperature measured by the thermocouple is used as the standard temperature, and the temperature measured by the multi-point temperature sensor is used as the test temperature. The temperature control processor automatically determines the difference between the test temperature data measured at each temperature measuring point of the multi-point temperature sensor under test and the standard temperature data measured by the thermocouple of the heating device corresponding to each temperature measuring point. When the temperature difference within the range of room temperature to 500°C does not exceed ±0.5°C each time, and the temperature difference within the range of 500°C to 1000°C does not exceed ±1‰ of the standard temperature each time, and when the temperature is greater than 1000°C, the temperature difference does not exceed ±1°C each time, it is recorded as qualified for the multi-point temperature sensor, otherwise it is recorded as unqualified; S5: During the testing process, once a failure is found, the testing is stopped and the multi-point temperature sensor under test is a failed product.

[0013] Preferably, the data collection frequency is once per second.

[0014] The advantage of the present invention is that the rapid detection system and method described in the present invention can realize simultaneous detection and analysis of multiple temperature measurement points of the sensor, with high test efficiency. At the same time, the present invention can arrange the position of the movable heating device according to different measurement positions on multi-point temperature sensors of different models to detect whether the multi-point temperature sensors are qualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 A top view of Figure 3 for Figure 2 Section view at AA in the middle. DETAILED DESCRIPTION

[0016] like Figures 1 to 3As shown, a detection device of a multi-point temperature sensor includes a detection platform 1, on which a control box 2 provided with an intelligent temperature control meter and a temperature control processor is arranged, the control box 2 adopts a touch screen control panel 22, the control box 2 is made of stainless steel 304 sheet metal, and is subjected to electrostatic spraying as an anti-corrosion treatment, a guide rail 4 is arranged along the length direction on the upper end surface of the detection platform 1, the guide rail 4 is arranged in sequence to slide and cooperate with a plurality of heating devices 3, the guide rail 4 is provided with a plurality of sliders that can slide and cooperate therewith, the bottom of each heating device 3 is respectively fixedly connected to the slider, each heating device 3 is respectively provided with a thermocouple 32 and a hot air blower 31, the thermocouple 32 of each heating device 3 is electrically connected to the temperature control processor, the thermocouple 32 adopts an S-type thermocouple, the hot air blower 31 is connected to the intelligent temperature control meter of the control box 2 through a wire, the intelligent temperature control meter is provided with a PID regulator, the PID regulator is electrically connected to each hot air blower 31 through a solid-state relay, and the power of each hot air blower 31 is The power of the heating device 3 is 3000W, and each of the heating devices 3 is provided with a support frame 33 for supporting a multi-point temperature sensor. There are two hot air blowers 31 in each of the heating devices 3, and the air outlets of the two hot air blowers 31 are arranged on a support frame 33 facing each other. A V-shaped groove is provided in the middle of the support frame 33, and a thermocouple 32 is vertically arranged in the V-shaped groove and located between the air outlets of the two hot air blowers 31. The air outlet of each hot air blower 31 of each heating device 3 is at an angle of 45 degrees to the vertical thermocouple 32. 33 are located on both sides of the upper part of the V-shaped groove, and positioning grooves 34 for supporting the multi-point temperature sensor are set. The detection platform 1 is provided with a multi-hole socket 21 for connecting the multi-point temperature sensor. The multi-hole socket 21 is connected to the temperature control processor of the control box 2 through a wire. The detection platform 1 is provided with a support seat 5 for supporting the multi-point temperature sensor on one side between the control box 2 and the heating device 3 close to the control box 2. The detection platform 1 is composed of multiple stands fixedly connected, so that the length of the detection platform 1 reaches more than four meters.

[0017] Each of the hot air blowers 31 is heated by a high-resistance Ni80Cr20 resistance wire, and the hot air area can be temperature-controlled at room temperature to 1200°C, and any temperature point within the working temperature range is in the best temperature matching state; The multi-hole socket 21 is made of pure copper material, which ensures that the connector has low parasitic potential, small contact resistance, good stability and high reliability; The lower ends of the supporting feet of each stand are provided with universal wheels with brakes to facilitate the movement and transportation of the equipment.

[0018] The detection method of the multi-point temperature sensor comprises the following steps: S1: Arrange the positions of the heating devices 3 on the testing platform 1 according to the spacing of the temperature measuring points on the multi-point temperature sensor to be tested, so that each heating device 3 corresponds to the temperature measuring point of the multi-point temperature sensor to be tested, place the multi-point temperature sensor to be tested on the heating device 3 and the support seat 5, and connect the multi-point temperature sensor to the multi-hole socket 21; S2: Turn on the power, set the target temperature of the hot air blower 31, start the intelligent temperature control meter, the hot air blower 31 of the heating device 3 starts to work and heat up, and the temperature control processor on the control box 2 synchronously collects the hot air area temperature measured by the thermocouples 32 of each heating device 3 and each temperature measuring point of the multi-point temperature sensor to be tested, and generates a temperature rise curve; S3: According to the set data collection frequency, the temperature data collected by the thermocouple 32 and the multi-point temperature sensor are compared each time, and the data collection frequency is once per second; S4: Taking the temperature measured by the thermocouple 32 as the standard temperature and the temperature measured by the multi-point temperature sensor as the test temperature, the temperature control processor automatically determines the difference between the test temperature data measured at each temperature measuring point of the multi-point temperature sensor under test and the standard temperature data measured by the thermocouple 32 of the heating device 3 corresponding to each temperature measuring point. When the temperature difference within the range of room temperature to 500°C does not exceed ±0.5°C each time, and the temperature difference within the range of 500°C to 1000°C does not exceed ±1‰ of the standard temperature, and when the temperature is greater than 1000°C, the temperature difference does not exceed ±1°C each time, it is recorded as qualified for the multi-point temperature sensor, otherwise it is recorded as unqualified. S5: During the testing process, once a failure is obtained, the testing is stopped and the multi-point temperature sensor under test is a failed product; S6: After the test is completed, the temperature control system is paused and the next round of testing can be carried out. The device is finally shut down and the power supply of the control box is turned off.

[0019] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification made to the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope of the present invention.

Claims

1. A detection device for a multi-point temperature sensor, characterized in that: The invention comprises a test bench (1), wherein a control box (2) provided with an intelligent temperature control meter and a temperature control processor is arranged on the test bench (1), a guide slide rail (4) is arranged on the upper end surface of the test bench (1) along the length direction, and the guide slide rail (4) is arranged in sequence to slide and cooperate with a plurality of heating devices (3), each heating device (3) is provided with a thermocouple (32) and a hot air blower (31), the thermocouple (32) of each heating device (3) is electrically connected to the temperature control processor, the hot air blower (31) is connected to the intelligent temperature control meter of the control box (2) through a wire, the heating devices (3) are all provided with a support frame (33) for supporting a multi-point temperature sensor, and a multi-hole socket (21) for connecting the multi-point temperature sensor is arranged on the test bench (1), and the multi-hole socket (21) is connected to the temperature control processor of the control box (2) through a wire.

2. The detection device of the multi-point temperature sensor according to claim 1, characterized in that: Each heating device (3) has two hot air blowers (31), the air outlets of the two hot air blowers (31) are arranged facing each other on a support frame (33), a V-shaped groove is provided in the middle of the support frame (33), a thermocouple (32) is vertically arranged in the V-shaped groove and is located between the air outlets of the two hot air blowers (31), and positioning grooves (34) for supporting a multi-point temperature sensor are provided on both sides of the upper part of the V-shaped groove of the support frame (33).

3. The detection device of the multi-point temperature sensor according to claim 2, characterized in that: The air outlet of each hot air blower (31) of each heating device (3) forms an angle of 45 degrees with the vertical thermocouple (32).

4. The detection device of the multi-point temperature sensor according to claim 1, characterized in that: The intelligent temperature control meter is provided with a PID regulator, and the PID regulator is electrically connected to each hot air blower (31) via a solid-state relay. The control box (2) adopts a touch display control panel (22).

5. The detection device of the multi-point temperature sensor according to claim 1, characterized in that: A support seat (5) for supporting a multi-point temperature sensor is provided on the detection platform (1) between the control box (2) and the heating device (3) on a side close to the control box (2).

6. The detection device of the multi-point temperature sensor according to claim 1, characterized in that: The guide rail (4) is provided with a plurality of slide blocks which can slidably cooperate with the guide rail (4), and the bottom of each heating device (3) is fixedly connected to the slide block.

7. The detection device of the multi-point temperature sensor according to claim 1, characterized in that: The testing platform (1) is composed of a plurality of platforms that are fixedly connected, so that the length of the testing platform (1) reaches more than four meters.

8. The detection device of the multi-point temperature sensor according to claim 1, characterized in that: The power of each hot air blower (31) is 3000W.

9. A detection method using the multi-point temperature sensor according to claim 1, characterized in that: The following steps are involved: S1: arranging the position of the heating device (3) on the test platform (1) according to the spacing between the temperature measuring points on the multi-point temperature sensor to be tested, so that each heating device (3) corresponds to the temperature measuring point of the multi-point temperature sensor to be tested, placing the multi-point temperature sensor to be tested on the heating device (3), and connecting the multi-point temperature sensor to the multi-hole socket (21); S2: Turn on the power supply, set the target temperature of the hot air blower (31), start the intelligent temperature control meter, the hot air blower (31) of the heating device (3) starts to work and heat up, and the temperature control processor on the control box (2) synchronously collects the temperature of the hot air area measured by the thermocouples (32) of each heating device (3) and each temperature measuring point of the multi-point temperature sensor to be tested; S3: comparing the temperature data collected by the thermocouple (32) and the temperature data collected by the multi-point temperature sensor at each time according to the set data collection frequency; S4: Using the temperature measured by the thermocouple (32) as the standard temperature and the temperature measured by the multi-point temperature sensor as the test temperature, the temperature control processor automatically determines the difference between the test temperature data measured at each temperature measuring point of the multi-point temperature sensor under test and the standard temperature data measured by the thermocouple (32) of the heating device (3) corresponding to each temperature measuring point. When the temperature difference within the range of room temperature to 500°C does not exceed ±0.5°C each time, and the temperature difference within the range of 500°C to 1000°C does not exceed ±1‰ of the standard temperature, and when the temperature is greater than 1000°C, the temperature difference does not exceed ±1°C each time, the multi-point temperature sensor is recorded as qualified, otherwise it is recorded as unqualified. S5: During the testing process, once a failure is found, the testing is stopped and the multi-point temperature sensor under test is a failed product.

10. The detection method of the multi-point temperature sensor according to claim 9, characterized in that: The data collection frequency is once per second.

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