Tool structure for detecting reliability of liquid level sensor

Abstract

A liquid level sensor reliability detection tool structure is provided with a mounting base, the upper end of the mounting base is connected with a limiting frame, and a plurality of limiting holes are formed in the upper end of the limiting frame; a liquid level pipe is arranged in each limiting hole; each liquid level pipe is connected with a water pumping motor, and the water pumping motors are used for adjusting the height of the liquid level in the liquid level pipes. An indicating graduated scale is arranged on the surface of each liquid level pipe and is used for indicating the liquid level height in the liquid level pipe; the bottom of each liquid level pipe is connected with a liquid level sensor, and the liquid level sensors are used for detecting liquid level height signals in the liquid level pipes. The real-time change of the water level height in the liquid level pipe is realized through the water pumping motor, and the actual use condition of the liquid level sensor is simulated, so that the use condition of the liquid level sensor is closer to the real working condition; the comparison test verification of the same model and different models can be realized at the same time, and the accuracy and effectiveness of the test are greatly improved; the method is low in cost and easy to implement.

Description

Technical Field

[0001] The utility model relates to a reliability detection tooling structure for a liquid level sensor, belonging to the technical field of liquid level sensor detection. Background Art

[0002] As a type of vehicle with special purposes in the field of special vehicles, the main functions of sanitation vehicles are realized through installation work. Sanitation vehicles are mainly divided into two categories: garbage collection and cleaning. Among them, sprinkler trucks, cleaning trucks, washing and sweeping trucks, dust suppression trucks, and road maintenance trucks are the main types of cleaning vehicles. Their installation functions are mainly driven by motors to drive water pumps to generate large-flow water flows with a certain pressure to achieve installation operations. In actual use, in order to protect the water pump, extend its service life, and prevent the water pump from idling, a liquid level sensor is added to the bottom of the tank to monitor the water level of the tank in real time, and the low water level alarm and motor idling protection functions are realized through the liquid level sensor signal. Therefore, the reliability of the liquid level sensor plays a very important role in the convenience and life of water truck-type sanitation vehicles.

[0003] At present, when many special vehicle manufacturers select liquid level sensors, they do not have special testing tools and solutions for reliability testing of liquid level sensors. They mainly test the reliability and accuracy of liquid level sensors by installing them on vehicles for actual testing. For example, by designing a box, installing the liquid level sensor at the bottom of the box, and realizing the real-time dynamic change of the water level in the box through the inconsistency of the specifications of the water inlet ball valve and the water outlet ball valve, the reliability of the liquid level sensor is tested by powering the liquid level sensor and connecting the sound and light alarm. However, this solution has low detection efficiency, the liquid level change inside the detection tooling cannot be adjusted in real time, the detection time is too long, and the signal reading of the liquid level sensor can only be realized through sound and light alarms. It can only realize the detection of water and waterlessness, but not the real-time detection of liquid level height. Utility Model Content

[0004] To this end, the utility model provides a liquid level sensor reliability detection tooling structure, which can realize the reliability and accuracy detection of the liquid level sensor through rapid changes in the liquid level, and can simultaneously detect multiple types of liquid level sensors, solving the problems of low reliability and low detection efficiency of traditional solutions.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reliability detection tooling structure of a liquid level sensor, comprising a mounting base, the upper end of the mounting base is connected to a limiting frame, the upper end of the limiting frame is formed with a plurality of limiting holes; each of the limiting holes is provided with a liquid level tube; each of the liquid level tubes is connected to a pumping motor, and the pumping motor is used to adjust the liquid level inside the liquid level tube;

[0006] The surface of each of the liquid level tubes is provided with an indicating scale, and the indicating scale is used to indicate the height of the liquid level inside the liquid level tube;

[0007] A liquid level sensor is connected to the bottom of each liquid level tube, and the liquid level sensor is used to detect the liquid level height signal inside the liquid level tube.

[0008] As a preferred solution for the reliability detection tooling structure of the liquid level sensor, it also includes a main controller, the pumping motor and the main controller are electrically connected, and the main controller is used to control the start and stop of the pumping motor.

[0009] As a preferred solution of the reliability detection tooling structure of the liquid level sensor, it also includes a display screen; the liquid level sensor and the main controller are electrically connected, and the display screen and the main controller are electrically connected;

[0010] The main controller is also used to process the liquid level signal of the liquid level sensor so as to display the liquid level inside the liquid level tube detected by the liquid level sensor through the display screen.

[0011] As a preferred solution for the liquid level sensor reliability detection tooling structure, it also includes a power supply, which is electrically connected to the main controller, and the power supply is used to power the pumping motor, the main controller, and the liquid level sensor.

[0012] As a preferred solution for the reliability detection tooling structure of the liquid level sensor, the number of the limiting hole, the liquid level tube, the pumping motor, and the liquid level sensor are all three.

[0013] As a preferred solution for the reliability detection tooling structure of the liquid level sensor, the liquid levels inside the three liquid level tubes are different from each other; and the models of the three liquid level sensors are different from each other.

[0014] As a preferred solution for the reliability detection tooling structure of the liquid level sensor, the liquid levels inside the three liquid level tubes are different from each other; and the three liquid level sensors are of the same model.

[0015] As a preferred solution for the reliability detection tooling structure of the liquid level sensor, the liquid level tube is made of glass or acrylic material.

[0016] The utility model has the following advantages: a mounting base is provided, the upper end of the mounting base is connected to a limiting frame, and a plurality of limiting holes are formed at the upper end of the limiting frame; a liquid level tube is provided inside each limiting hole; each liquid level tube is connected to a pumping motor, and the pumping motor is used to adjust the liquid level inside the liquid level tube; the surface of each liquid level tube is provided with an indicating scale, and the indicating scale is used to indicate the liquid level inside the liquid level tube; the bottom of each liquid level tube is connected to a liquid level sensor, and the liquid level sensor is used to detect the liquid level signal inside the liquid level tube. The utility model realizes the real-time change of the water level in the liquid level tube through the pumping motor, simulates the actual use condition of the liquid level sensor, and makes the use condition of the liquid level sensor closer to the real working condition; it can realize the comparative test verification of the same model and different models at the same time, greatly reducing the test verification time of parts, shortening the product development cycle, and reducing the development cost; it greatly improves the accuracy and effectiveness of the test; it is low-cost and easy to realize. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the liquid level sensor reliability detection tooling provided in the embodiment of the utility model.

[0019] In the figure, 1. installation base; 2. limit frame; 3. limit hole; 4. liquid level pipe; 5. pumping motor; 6. indicating scale; 7. liquid level sensor; 8. main controller; 9. display screen; 10. power supply. DETAILED DESCRIPTION

[0020] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1The embodiment of the utility model provides a reliability detection tooling structure of a liquid level sensor, including a mounting base 1, the upper end of the mounting base 1 is connected to a limiting frame 2, and the upper end of the limiting frame 2 is formed with a plurality of limiting holes 3; each limiting hole 3 is provided with a liquid level tube 4; each liquid level tube 4 is connected to a pumping motor 5, and the pumping motor 5 is used to adjust the liquid level height inside the liquid level tube 4;

[0022] Wherein, the surface of each liquid level tube 4 is provided with an indicating scale 6, and the indicating scale 6 is used to indicate the liquid level height inside the liquid level tube 4;

[0023] The bottom of each liquid level tube 4 is connected to a liquid level sensor 7 , and the liquid level sensor 7 is used to detect a liquid level height signal inside the liquid level tube 4 .

[0024] In this embodiment, the number of the limit hole 3, the liquid level tube 4, the pumping motor 5, and the liquid level sensor 7 are all three; in addition, a main controller 8 is also included, and the pumping motor 5 and the main controller 8 are electrically connected, and the main controller 8 is used to control the opening and closing of the pumping motor 5; a display screen 9 is also included; the liquid level sensor 7 and the main controller 8 are electrically connected, and the display screen 9 and the main controller 8 are electrically connected; the main controller 8 is also used to process the liquid level height signal of the liquid level sensor 7 to display the liquid level inside the liquid level tube 4 detected by the liquid level sensor 7 through the display screen 9.

[0025] Specifically, the real-time change of the liquid level inside the liquid level tube 4 is realized through the pumping motor 5, thereby simulating the actual use condition of the liquid level sensor 7. The shutdown and startup of the pumping motor 5 can be controlled by the main controller 8. At the same time, the three pumping motors 5 can also be controlled separately by the main controller 8. The liquid level sensor 7 transmits the liquid level height signal to the main controller 8, and the main controller 8 feeds back the liquid level height signal to the display screen 9 configured by the main controller 8. The liquid level height signal can be read in real time through the display screen 9, and the liquid level height is displayed on the display screen 9. The liquid level displayed on the display screen 9 is compared with the actual value of the liquid level scale on the liquid level tube 4. The water level feedback signal and the actual water level number are analyzed through the display screen 9. The error is required to be within ±2%, and then the accuracy of the liquid level sensor 7 is judged. Through continuous experiments and tests, the reliability and accuracy of the liquid level sensor 7 can be quickly verified.

[0026] The limiting frame 2 limits the liquid level tube 4 through the limiting hole 3, ensuring that the liquid level tube 4 can maintain an upright state, so that the liquid level can be accurately read and detected.

[0027] In this embodiment, a power supply 10 is also included. The power supply 10 is electrically connected to the main controller 8 . The power supply 10 is used to supply power to the pumping motor 5 , the main controller 8 , and the liquid level sensor 7 .

[0028] Specifically, a battery is used as the power source 10, and the power source 10 provides a 12V / 24V voltage interface, which can meet the model requirements of the liquid level sensor 7 of different vehicle models. The power source 10 can power the pumping motor 5 and the main controller 8 to meet the power demand of the entire tooling structure. Among them, the circuit of the power source 10 providing a 12V / 24V voltage interface itself has related technology, which will not be repeated here.

[0029] In a possible embodiment, the liquid levels in the three liquid level tubes 4 are different from each other; the models of the three liquid level sensors 7 can be different from each other or can be the same.

[0030] Specifically, three liquid level tubes 4 with a diameter of 100 mm and a height of 2000 mm are fixed on the mounting base 1, and the indicating scale 6 on the liquid level tube 4 can indicate the actual liquid level. The bottom of the liquid level tube 4 has a mounting hole for the liquid level sensor 7, and three liquid level sensors 7 of the same model or different models can be installed at the same time. The liquid level tube 4 is filled with clean water of different heights, and three miniature pumping motors 5 are installed on the top of the liquid level tube 4. The real-time change of the liquid level in the liquid level tube 4 is realized by the pumping motor 5; the comparative test and verification of the same model and different models of liquid level sensors 7 can be realized at the same time, which greatly reduces the time for component testing and verification, shortens the product development cycle, and reduces development costs.

[0031] In a possible embodiment, the liquid level tube 4 is made of glass or acrylic material, so that the liquid level tube 4 is transparent, and the actual liquid level inside the liquid level tube 4 is convenient to read for comparison with the liquid level detected by the liquid level sensor 7 .

[0032] In summary, the utility model fixes three liquid level tubes 4 with a diameter of 100mm and a height of 2000mm on the mounting base 1, and the indicating scale 6 on the liquid level tube 4 can indicate the actual liquid level. The bottom of the liquid level tube 4 has a mounting hole for the liquid level sensor 7, and three liquid level sensors 7 of the same model or different models can be installed at the same time. The liquid level tube 4 is filled with clean water of different heights, and three miniature pumping motors 5 are installed on the top of the liquid level tube 4. The real-time change of the liquid level in the liquid level tube 4 is realized by the pumping motor 5; the comparative test and verification of the same model and different models of liquid level sensors 7 can be realized at the same time, which greatly reduces the time for component testing and verification, shortens the product development cycle, and reduces development costs. The real-time change of the liquid level inside the liquid level tube 4 is realized by the pumping motor 5, thereby simulating the actual use condition of the liquid level sensor 7. The main controller 8 can control the shutdown and startup of the pumping motor 5. At the same time, the three pumping motors 5 can also be controlled separately by the main controller 8. The liquid level sensor 7 transmits the liquid level height signal to the main controller 8, and the main controller 8 feeds back the liquid level height signal to the display screen 9 configured by the main controller 8. The liquid level height signal can be read in real time through the display screen 9, and the liquid level height is displayed through the display screen 9. The liquid level height displayed on the display screen 9 is compared with the actual value of the liquid level scale on the liquid level tube 4. The water level feedback signal of the display screen 9 is analyzed with the actual water level number. The error is required to be within ±2%, and then the accuracy of the liquid level sensor 7 is judged. Through continuous experiments and tests, the reliability and accuracy of the liquid level sensor 7 can be quickly verified.

[0033] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A liquid level sensor reliability detection tooling structure, characterized in that: The utility model comprises a mounting base (1), the upper end of the mounting base (1) is connected to a limiting frame (2), the upper end of the limiting frame (2) is formed with a plurality of limiting holes (3); each limiting hole (3) is provided with a liquid level tube (4); each liquid level tube (4) is connected to a pumping motor (5), and the pumping motor (5) is used to adjust the liquid level inside the liquid level tube (4); The surface of each of the liquid level tubes (4) is provided with an indicating scale (6), and the indicating scale (6) is used to indicate the height of the liquid level inside the liquid level tube (4); The bottom of each liquid level tube (4) is connected to a liquid level sensor (7), and the liquid level sensor (7) is used to detect a liquid level height signal inside the liquid level tube (4).

2. A liquid level sensor reliability detection tooling structure according to claim 1, characterized in that: It also comprises a main controller (8), the water pumping motor (5) and the main controller (8) are electrically connected, and the main controller (8) is used to control the start and stop of the water pumping motor (5).

3. A liquid level sensor reliability detection tooling structure according to claim 2, characterized in that: It also includes a display screen (9); the liquid level sensor (7) and the main controller (8) are electrically connected, and the display screen (9) and the main controller (8) are electrically connected; The main controller (8) is also used to process the liquid level height signal of the liquid level sensor (7) so as to display the liquid level inside the liquid level tube (4) detected by the liquid level sensor (7) through the display screen (9).

4. A liquid level sensor reliability detection tooling structure according to claim 3, characterized in that: It also comprises a power supply (10), the power supply (10) and the main controller (8) are electrically connected, and the power supply (10) is used to supply power to the pumping motor (5), the main controller (8), and the liquid level sensor (7).

5. The reliability detection tooling structure of a liquid level sensor according to claim 1, characterized in that: The number of the position-limiting hole (3), the liquid level tube (4), the water pumping motor (5), and the liquid level sensor (7) are all three.

6. A liquid level sensor reliability detection tooling structure according to claim 5, characterized in that: The liquid levels inside the three liquid level tubes (4) are different from each other; and the models of the three liquid level sensors (7) are different from each other.

7. The reliability detection tooling structure of a liquid level sensor according to claim 5, characterized in that: The liquid levels inside the three liquid level tubes (4) are different from each other; and the three liquid level sensors (7) are of the same model.

8. The reliability detection tooling structure of a liquid level sensor according to claim 1 is characterized in that: The liquid level tube (4) is made of glass or acrylic material.

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