Sensor testing tool

Abstract

The utility model provides a sensor testing tool, the sensor testing tool comprises a power distribution module, a multimeter and a sensor, the power distribution module is electrically connected with the multimeter and the sensor and is used for supplying power to the multimeter and the sensor, and the multimeter is connected with the sensor. Thus, the power distribution module can continuously supply power to the sensor and the universal meter, the sensor is aged, and the universal meter displays the analog output of the aged sensor in real time. The device is simple in structure, and the test operation of the sensor is simple.

Description

Technical Field

[0001] This utility model relates to the field of sensor detection technology, and in particular to a sensor testing fixture. Background Technology

[0002] Currently, typical detection components can only detect a single sensor, and the detection circuit design is relatively complex, making it difficult to install with the sensor and resulting in cumbersome measurements. Furthermore, supplying power to the sensor and detection components is quite challenging. Utility Model Content

[0003] The purpose of this invention is to provide a sensor testing fixture to solve the problems of complex testing schemes and power supply difficulties in current sensor testing.

[0004] To solve the above-mentioned technical problems, this utility model provides a sensor testing fixture, which includes a power distribution module, a multimeter, and a sensor. The power distribution module is electrically connected to the multimeter and the sensor and is used to supply power to the multimeter and the sensor. The multimeter is connected to the sensor.

[0005] Optionally, the power distribution module includes a power supply unit and a first voltage conversion unit. The power supply unit and the first voltage conversion unit are connected. The first voltage conversion unit is connected to the multimeter. The first voltage conversion unit converts the voltage of the power supply unit into a first supply voltage and outputs it to the multimeter.

[0006] Optionally, the power distribution module further includes a second voltage conversion unit connected to the first voltage conversion unit. The second voltage conversion unit is connected to the sensor and converts the first power supply voltage into a second power supply voltage, which is then output to the sensor.

[0007] Optionally, both the first voltage conversion unit and the second voltage conversion unit are step-down circuits.

[0008] Optionally, the sensor testing fixture may further include a power status indication unit connected to the second voltage conversion unit.

[0009] Optionally, the power status indicator unit includes an LED indicator.

[0010] Optionally, there may be multiple first voltage conversion units, multiple multimeters, and multiple sensors, with each multimeter and sensor corresponding to another.

[0011] Optionally, each of the first voltage conversion units is connected to at least two of the multimeters.

[0012] Optionally, there may be multiple second voltage conversion units, each corresponding to one of the sensors.

[0013] Optionally, each of the first voltage conversion units is connected to at least two of the second voltage conversion units.

[0014] Optionally, the multimeter has a digital display.

[0015] In summary, the sensor testing fixture provided by this utility model includes a power distribution module, a multimeter, and a sensor. The power distribution module is electrically connected to the multimeter and the sensor to supply power to them. The multimeter is connected to the sensor. Thus, the power distribution module can continuously supply power to the sensor and the multimeter to age the sensor, and the multimeter displays the analog output of the sensor during the aging process in real time. This utility model has a simple structure and simplifies the testing operation of the sensor. Attached Figure Description

[0016] Those skilled in the art will understand that the accompanying drawings are provided to better understand the present invention and do not constitute any limitation on the scope of the present invention. Wherein:

[0017] Figure 1 This is a schematic diagram of the tooling structure according to an embodiment of the present invention.

[0018] 11-Power supply unit; 12-First voltage conversion unit; 13-Second voltage conversion unit; 20-Multimeter; 30-Sensor; 40-Power status indication unit. Detailed Implementation

[0019] To make the objectives, advantages, and features of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to facilitate and clarify the explanation of the objectives of the embodiments of this utility model. Furthermore, the structures shown in the drawings are often part of the actual structure. In particular, different drawings may emphasize different aspects and sometimes use different scales.

[0020] As used in this invention, the singular forms “a,” “an,” and “the” include plural objects; the term “or” is generally used to include the meaning of “and / or”; the term “a number” is generally used to include the meaning of “at least one”; and the term “at least two” is generally used to include the meaning of “two or more”. Furthermore, the terms “first,” “second,” and “third” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with “first,” “second,” or “third” may explicitly or implicitly include one or at least two of that feature. “One end” and “the other end,” as well as “proximal end” and “far end,” generally refer to two corresponding parts, including not only endpoints. The terms “installed,” “connected,” and “joined” should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two elements or the interaction between two elements. Furthermore, as used in this invention, the phrase "one element is disposed on another element" generally only indicates that there is a connection, coupling, cooperation, or transmission relationship between the two elements. This connection, coupling, cooperation, or transmission can be direct or indirect through an intermediate element, and should not be construed as indicating or implying a spatial positional relationship between the two elements. That is, one element can be located arbitrarily inside, outside, above, below, or to one side of the other element, unless otherwise explicitly stated. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] Figure 1 This is a schematic diagram of a sensor testing fixture according to an embodiment of this utility model. (See attached diagram) Figure 1 This utility model schematically provides a sensor testing fixture, which includes a power distribution module, a multimeter 20, and a sensor 30. The power distribution module is electrically connected to the multimeter 20 and the sensor 30, and is used to supply power to the multimeter 20 and the sensor 30. The multimeter 20 is connected to the sensor 30 and can display the analog output of the sensor 30 in real time, that is, the analog voltage signal output by the sensor 30. For example, the multimeter 20 is a multimeter with a digital tube, which displays the analog output of the sensor 30. The digital tube has the advantages of clear display, fast response speed, and durability. The sensor 30 can be, for example, a PID sensor. In this way, the power distribution module can continuously supply power to the sensor 30 and the multimeter 20 to age the sensor 30, and the multimeter 20 displays the analog output of the sensor 30 in real time during the aging process. This utility model has a simple structure and the testing operation of the sensor 30 is simple.

[0022] Furthermore, there are multiple multimeters 20 and multiple sensors 30, with a one-to-one correspondence between the sensors 30 and multimeters 20. The power distribution module supplies power to all multimeters 20 and all sensors 30. In this way, multiple sensors 30 can be tested and aged simultaneously, saving material and manpower resources.

[0023] Furthermore, the power distribution module includes a power supply unit 11 and a first voltage conversion unit 12. The power supply unit 11 and the first voltage conversion unit 12 are connected. The first voltage conversion unit 12 is connected to a multimeter 20. The first voltage conversion unit 12 converts the voltage of the power supply unit 11 into a first supply voltage and outputs it to the multimeter 20 to provide power to the multimeter 20 through the first supply voltage. There can be multiple first voltage conversion units 12, and each first voltage conversion unit 12 is connected to at least two multimeters 20. Thus, at least two multimeters 20 can be powered simultaneously through one first voltage conversion unit 12. For example, Figure 1 The demonstration shows that a single first voltage conversion unit 12 can simultaneously power four multimeters 20.

[0024] Typically, the multimeter 20 and the sensor 30 require different power supply voltages. In this embodiment, the power distribution module also includes a second voltage conversion unit 13. The input terminal of the second voltage conversion unit 13 is connected to the first voltage conversion unit 12, and the output terminal of the second voltage conversion unit 13 is connected to the sensor 30. The second voltage conversion unit 13 converts the first power supply voltage to a second power supply voltage and outputs it to the sensor 30 to provide power to the sensor 30 via the second power supply voltage. For example, both the first voltage conversion unit 12 and the second voltage conversion unit 13 are step-down circuits. For instance, the power supply unit 11 provides 24V DC power, the first voltage conversion unit 12 steps down the 24V to output a 5.0V first power supply voltage, and the second voltage conversion unit 13 steps down the 5.0V to output a 3.3V second power supply voltage. There are multiple second voltage conversion units 13, and each second voltage conversion unit 13 corresponds one-to-one with a sensor 30. Each first voltage conversion unit 12 is connected to at least two second voltage conversion units 13, for example... Figure 1 The example demonstrates a single first voltage conversion unit 12 connected to four second voltage conversion units 13.

[0025] Preferably, the sensor testing fixture further includes a power status indicator unit 40 connected to the second voltage conversion unit 13. The power status indicator unit 40 can be used to indicate whether the working status of the second voltage conversion unit 13 is normal, thereby determining whether the power supply to the sensor 30 is normal. For example, the power status indicator can be an LED indicator, and the power supply to the sensor 30 by the second voltage conversion unit 13 can be determined by the change in the color or the change in the brightness of the light.

[0026] Although the present invention has been disclosed above with reference to preferred embodiments, these embodiments are not intended to limit the present invention. For any person skilled in the art, many possible variations and modifications can be made to the technical solutions of the present invention based on the disclosed technical content, or equivalent embodiments can be modified accordingly, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, shall still fall within the protection scope of the present invention.

Claims

1. A sensor test tool, characterized by, The power distribution module, the multimeter and the sensor are electrically connected, and the power distribution module is used for supplying power to the multimeter and the sensor; the multimeter is connected with the sensor; The power distribution module comprises a power supply unit and a first voltage conversion unit, the power supply unit and the first voltage conversion unit are connected, the first voltage conversion unit is connected with the multimeter, and the first voltage conversion unit converts the voltage of the power supply unit into a first power supply voltage and outputs the first power supply voltage to the multimeter; The power distribution module further comprises a second voltage conversion unit connected with the first voltage conversion unit, the second voltage conversion unit is connected with the sensor, the second voltage conversion unit converts the first power supply voltage into a second power supply voltage and outputs the second power supply voltage to the sensor.

2. The sensor test tool of claim 1, wherein, The first voltage conversion unit and the second voltage conversion unit are both step-down circuits.

3. The sensor test tool of claim 1, wherein, The sensor testing tool further comprises a power supply state indication unit connected with the second voltage conversion unit.

4. The sensor test tool of claim 1, wherein, The number of the first voltage conversion units is plural, the number of the multimeters is plural, the number of the sensors is plural, and the multimeters and the sensors are in one-to-one correspondence.

5. The sensor test tool of claim 4, wherein, Each first voltage conversion unit is connected with at least two multimeters.

6. The sensor test tool of claim 4, wherein, The number of the second voltage conversion units is plural, and the second voltage conversion units are in one-to-one correspondence with the sensors.

7. The sensor test tool of claim 6, wherein, Each first voltage conversion unit is connected with at least two second voltage conversion units.

8. The sensor test tool of claim 1, wherein, The multimeter has a digital tube.

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