Waterproof testing device for sensor production

Abstract

The invention discloses a waterproof test device for sensor production, and belongs to the technical field of sensor testing, the waterproof test device comprises a test box, the test box is composed of a lower box body and an upper box body, the top wall of the lower box body is communicated with the top wall of the upper box body, and heat insulation plates are symmetrically arranged on the bottom wall of the lower box body. A first test cavity is formed between the two heat insulation plates and the upper box body, a second test cavity is formed by the sides, away from each other, of the two heat insulation plates and the lower box body, two first conveying belts are installed in the first test cavity, and a plurality of placing mechanisms are evenly arranged on the surfaces of the first conveying belts and used for placing sensors to be tested; an electric heating rod is mounted at the bottom of the first test cavity; according to the invention, different environments can be simulated, the waterproof performance of the sensor can be fully tested, and the waterproof capability of the sensor can be evaluated more accurately.

Description

Technical Field

[0001] The invention relates to the technical field of sensor testing, and in particular to a waterproof testing device for sensor production. Background Art

[0002] A sensor (English name: transducer / sensor) is a detection device that can sense the information being measured and convert the sensed information into electrical signals or other required forms of information output according to certain rules to meet the requirements of information transmission, processing, storage, display, recording and control.

[0003] During the production process, sensors need to be tested for water resistance. The main focus is on the water barrier ability of their casing or package, and whether the internal circuits and components can be kept dry under specific water depth and pressure. However, the testing functions of current testing devices are relatively simple. Generally, they can only perform water immersion tests on sensors, and cannot test sensors in humid environments. The working environment of sensors is changeable, so existing testing devices cannot accurately obtain the waterproof effect of sensors in different environments. Summary of the invention

[0004] The purpose of the present invention is to provide a waterproof testing device for sensor production to solve the following technical problems: the testing function of the current testing device is relatively simple, and it can generally only perform water immersion experiments on sensors, but cannot test sensors in a humid environment. The working environment of sensors is changeable, so the existing testing device cannot accurately obtain the waterproof effect of sensors in different environments.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A waterproof testing device for sensor production, comprising a test box, the test box consisting of a lower box body and an upper box body, the lower box body and the top wall of the upper box body are connected, the bottom wall of the lower box body is symmetrically provided with insulation boards, the two insulation boards and the upper box body form a first test cavity, the two insulation boards and the lower box body form a second test cavity on the side away from each other, two first conveyor belts are installed in the first test cavity, a plurality of placement mechanisms are evenly arranged on the surface of the first conveyor belts for placing sensors to be tested, and an electric heating rod is installed at the bottom of the first test cavity; The placing mechanism comprises two mounting blocks symmetrically arranged on the surface of the first conveyor belt, a placing rod is installed between the two mounting blocks via a rotating shaft, a placing groove is arranged on the side of the placing rod away from the first conveyor belt, a torsion spring is connected between the placing rod and the mounting blocks, and a spring is connected between the placing rod and the first conveyor belt; A second conveyor belt is installed in the second test chamber, and a plurality of receiving plates are evenly arranged on the surface of the second conveyor belt. Arc baffles are symmetrically installed in the first test chamber, and the two arc baffles are respectively located under the two first conveyor belts.

[0006] As a further solution of the present invention: ventilation holes are arranged in array on the top wall and the bottom wall of the placement rod.

[0007] As a further solution of the present invention: two closing plates are movably arranged on the top wall of the lower box body, the two closing plates are respectively located directly above the two insulation plates, and stoppers are arranged at the bottom of the two closing plates close to the side walls.

[0008] As a further solution of the present invention: an inclined surface is provided on the side wall of the closing plate and the insulation plate at one end thereof.

[0009] As a further solution of the present invention: a first opening is symmetrically arranged on the top wall of the lower box body, a first cover plate is arranged in the second opening, a second opening is arranged on the top wall of the upper box body, a second cover plate is arranged in the second opening, handles are installed on the upper surfaces of the first cover plate and the second cover plate, and sealing strips are arranged around the second cover plate.

[0010] As a further solution of the present invention: a driving mechanism is installed on the side wall of the test box for driving the first conveyor belt and the second conveyor belt to rotate.

[0011] As a further solution of the present invention: installation openings are provided on both side walls of the upper box body, a water circulation mechanism is arranged in the installation opening, the water circulation mechanism includes a water tank fixed in the installation opening, a water inlet pipe and a water outlet pipe are respectively connected to both side walls of the water tank, one end of the water inlet pipe and the water outlet pipe are both connected to the second test chamber, a water pump is installed on the water inlet pipe, a pressure valve is installed on the water outlet pipe, and a water filling pipe is connected to the top wall of the water tank.

[0012] As a further solution of the present invention: a temperature sensor is installed in the second test cavity.

[0013] Beneficial effects of the present invention: (1) The present invention provides a test box, and distributes a first test chamber and a second test chamber in the test box. Clean water is placed in the first test chamber, and an electric heating rod is provided in the first test chamber to heat the clean water. After the clean water evaporates, the upper part of the first test chamber becomes a humid environment. The sensor stays in the humid environment for a period of time, then enters the hot water and stays for a period of time, and finally enters the low temperature environment of the second test chamber to stay, so as to simulate the working conditions of the sensor under different environmental conditions, thereby obtaining more accurate test results; (2) The present invention sets a placement mechanism to place the sensor to be tested in the placement groove of the placement rod, and then moves with the first conveyor belt. After the sensor is tested in a humid and hot water environment, the placement rod will contact the connection between the lower box and the upper box, causing the placement rod to tilt and pour the sensor into the second test chamber, so that the sensor stays in a low temperature environment. Finally, the sensor is taken out to test whether the sensor can continue to work and whether water has entered the interior; (3) The present invention separates the first test chamber from the second test chamber by providing a sealing plate, so that the test environments are independent of each other, thereby avoiding temperature interference that may affect the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the test box of the present invention; Figure 3 is a front view of the test box of the present invention; Figure 4 It is a schematic diagram of the overall structure of the present invention after the first cover plate and the second cover plate are hidden; Figure 5 It is a structural schematic diagram of the placement mechanism of the present invention; Figure 6 It is a structural schematic diagram of the closing plate of the present invention; Figure 7 yes Figure 3 The enlarged view of point A in the middle; Figure 8 It is a structural schematic diagram of the water circulation mechanism of the present invention.

[0016] In the figure: 1, lower box body; 2, upper box body; 3, first cover plate; 4, second cover plate; 5, water circulation mechanism; 6, first test chamber; 7, second test chamber; 8, first conveyor belt; 9, placement mechanism; 901, mounting block; 902, placement rod; 903, torsion spring; 904, spring; 905, vent; 10, second conveyor belt; 11, receiving plate; 12, electric heating rod; 13, insulation plate; 14, closing plate; 15, arc baffle; 16, temperature sensor; 17, block; 18, water tank; 19, semiconductor refrigeration plate; 20, water inlet pipe; 21, water outlet pipe; 22, pressure valve; 23, water adding pipe.

[0017] The drawings are only used for illustrative purposes and are not to be construed as limitations of the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced in size, and do not represent the size and shape of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments 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.

[0019] See also Figures 1 to 5As shown, the present invention is a waterproof testing device for sensor production, including a test box, which is composed of a lower box body 1 and an upper box body 2. The top walls of the lower box body 1 and the upper box body 2 are connected, and the bottom wall of the lower box body 1 is symmetrically provided with insulation boards 13. The two insulation boards 13 and the upper box body 2 form a first test cavity 6, and the side away from the two insulation boards 13 and the lower box body 1 form a second test cavity 7. Two first conveyor belts 8 are installed in the first test cavity 6. The surface of the first conveyor belt 8 is evenly provided with a plurality of placement mechanisms 9 for placing the sensor to be tested. The bottom of the first test cavity 6 is installed with an electric heating rod 12; the placement mechanism 9 It includes two mounting blocks 901 symmetrically arranged on the surface of the first conveyor belt 8, a placing rod 902 is installed between the two mounting blocks 901 through a rotating shaft, a placing groove is arranged on the side of the placing rod 902 away from the first conveyor belt 8, a torsion spring 903 is connected between the placing rod 902 and the mounting block 901, and a spring 904 is connected between the placing rod 902 and the first conveyor belt 8; a second conveyor belt 10 is installed in the second test cavity 7, and a plurality of receiving plates 11 are evenly arranged on the surface of the second conveyor belt 10, and arc baffles 15 are symmetrically installed in the first test cavity 6, and the two arc baffles 15 are respectively located below the two first conveyor belts 8; the lower A first opening is symmetrically arranged on the top wall of the box body 1, a first cover plate 3 is arranged in the second opening, a second opening is arranged on the top wall of the upper box body 2, a second cover plate 4 is arranged in the second opening, handles are installed on the upper surfaces of the first cover plate 3 and the second cover plate 4, and sealing strips are arranged around the second cover plate 4; a driving mechanism is installed on the side wall of the test box for driving the first conveyor belt 8 and the second conveyor belt 10 to rotate; when the opening of the placement rod 902 faces the second opening, the sensor to be tested is placed in the placement groove of the placement rod 902, hot water is added to the first test cavity 6, and cold water is added to the second test cavity 7, and the water level does not exceed the insulation temperature. Plate 13, and hot water is volatilized by the electric heating rod 12, the upper part of the first test chamber 6 is in a wet state, the sensor stays in the upper part for a period of time, and then the first conveyor belt 8 drives the sensor into the hot water to continue to stay for a period of time, and finally the first conveyor belt 8 rotates to move the sensor to the side close to the insulation plate 13, when the placement rod 902 contacts the connection between the lower box body 1 and the upper box body 2, the placement rod 902 tilts, and the internal sensor automatically enters the second test chamber 7, so that the sensor stays in a low temperature environment for a period of time, simulating the working conditions of the sensor under different environmental conditions, so as to obtain more accurate test results.

[0020] See also Figure 5 The top wall and the bottom wall of the placement rod 902 are both provided with ventilation holes 905 in an array, so that the sensor inside the placement slot can be fully exposed to water vapor.

[0021] See also Figure 6 and Figure 7Two closing plates 14 are movably arranged on the top wall of the lower box body 1, and the two closing plates 14 are respectively located directly above the two insulation plates 13. Blocks 17 are arranged at the bottoms of the two closing plates 14 close to the side walls, and inclined surfaces are arranged on the side walls at the ends of the closing plates 14 close to the insulation plates 13; the closing plates 14 separate the first test cavity 6 and the second test cavity 7 to avoid temperature interference therebetween, and the placing rod 902 will lift the closing plates 14 after contacting the block 17, so as to facilitate the sensor to enter the second test cavity 7.

[0022] See also Figure 1 , Figure 2 and Figure 8 , both side walls of the upper box body 2 are provided with installation openings, and a water circulation mechanism 5 is arranged in the installation opening. The water circulation mechanism 5 includes a water tank 18 fixed in the installation opening, and both side walls of the water tank 18 are respectively connected with a water inlet pipe 20 and a water outlet pipe 21, one end of the water inlet pipe 20 and the water outlet pipe 21 are both connected with the second test chamber 7, a water pump is installed on the water inlet pipe 20, a pressure valve 22 is installed on the water outlet pipe 21, and a water adding pipe 23 is connected to the top wall of the water tank 18; a temperature sensor 16 is installed in the second test chamber 7; the water circulation mechanism 5 is used to keep the aqueous solution in the second test chamber 7 at a low temperature, which is conducive to long-term testing. The water tank 18 is made of heat-conducting material, which can accelerate the condensation of water vapor and prevent the air pressure in the first test chamber 6 from being too high.

[0023] The working principle of the present invention is as follows: first open the first cover plate 3 and the second cover plate 4, add hot water into the first test chamber 6, add cold water into the second test chamber 7, and then use a driving mechanism (not shown) to drive the two first conveyor belts 8 to rotate synchronously. Figure 2 For example, the first conveyor belt 8 on the left side rotates clockwise, and the first conveyor belt 8 on the right side rotates counterclockwise. When the opening of the placement rod 902 faces the second opening, the sensor to be tested is placed in the placement groove of the placement rod 902, and then the first conveyor belt 8 continues to move so that the placement rod 902 is in a horizontal state (such as Figure 3 As shown in the figure), the first conveyor belt 8 stops rotating, the second cover plate 4 is covered, the electric heating rod 12 heats the hot water to accelerate the volatilization of the clean water, the upper part of the first test chamber 6 is in a wet state, so that the sensor stays there for a period of time, and then the first conveyor belt 8 continues to move, so that the sensor enters the hot water and continues to stay there for a period of time; After staying in the hot water for a sufficient time, the first conveyor belt 8 continues to move, so that the placement rod 902 moves toward one side of the second test chamber 7, and the placement rod 902 moves upward along the insulation plate 13. When it contacts the stopper 17, the closing plate 14 rises, and the first test chamber 6 and the second test chamber 7 are connected. When the placement rod 902 contacts the junction of the lower box body 1 and the upper box body 2, the placement rod 902 is forced to rotate, and the spring 904 and the torsion spring 903 are stretched. The sensor falls into the second test chamber 7 along the inclined placement rod 902. Under the action of gravity, the sensor falls on the receiving plate 11 and continues to stay in the cold water for a while. Finally, the second conveyor belt 10 on the left rotates counterclockwise, and the second conveyor belt 10 on the right rotates clockwise to send the sensor to the first opening. The operator takes out the sensor and tests whether the sensor can continue to work and whether water has entered the inside. The water tank 18 of the water circulation mechanism 5 is filled with clean water. The cold end of the semiconductor refrigeration sheet 19 is located in the water tank 18 to cool the clean water. The temperature sensor 16 is used to detect the temperature of the cold water in the second test chamber 7. When the temperature of the cold water rises, the water pump is started to send the cold water in the second test chamber 7 into the water tank 18. Under the action of the water pressure, the pressure valve 22 is opened, and the cooling water enters the second test chamber 7, so that the cold water in the second test chamber 7 is always kept at a low temperature, and the water vapor in the first test chamber 6 can be quickly condensed after contacting the water tank 18, so as to avoid excessive pressure inside the first test chamber 6. In addition, when testing one group of sensors, the next group of sensors can be placed in the placement mechanism 9, and multiple groups of tests can be performed simultaneously, which are independent of each other and do not interfere with each other, thereby improving the test efficiency.

[0024] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A waterproof testing device for sensor production, comprising a test box, characterized in that: The test box is composed of a lower box body (1) and an upper box body (2), the top walls of the lower box body (1) and the upper box body (2) are connected, and a temperature insulation board (13) is symmetrically arranged on the bottom wall of the lower box body (1), and a first test chamber (6) is formed between the two temperature insulation boards (13) and the upper box body (2), and a second test chamber (7) is formed with the lower box body (1) on the side away from the two temperature insulation boards (13), and two first conveyor belts (8) are installed in the first test chamber (6), and a plurality of placement mechanisms (9) are evenly arranged on the surface of the first conveyor belt (8) for placing sensors to be tested, and an electric heating rod (12) is installed at the bottom of the first test chamber (6); The placement mechanism (9) comprises two mounting blocks (901) symmetrically arranged on the surface of the first conveyor belt (8); a placement rod (902) is installed between the two mounting blocks (901) via a rotating shaft; a placement groove is provided on a side of the placement rod (902) away from the first conveyor belt (8); a torsion spring (903) is connected between the placement rod (902) and the mounting blocks (901); and a spring (904) is connected between the placement rod (902) and the first conveyor belt (8); A second conveyor belt (10) is installed in the second test chamber (7), and a plurality of receiving plates (11) are evenly arranged on the surface of the second conveyor belt (10). Arc-shaped baffles (15) are symmetrically installed in the first test chamber (6), and the two arc-shaped baffles (15) are respectively located below the two first conveyor belts (8).

2. A waterproof testing device for sensor production according to claim 1, characterized in that: The top wall and the bottom wall of the placement rod (902) are both provided with ventilation holes (905) in an array.

3. A waterproof testing device for sensor production according to claim 1, characterized in that: Two closing plates (14) are movably arranged on the top wall of the lower box body (1), the two closing plates (14) are respectively located directly above the two insulation plates (13), and stoppers (17) are arranged at the bottoms of the two closing plates (14) close to the side walls.

4. A waterproof testing device for sensor production according to claim 3, characterized in that: An inclined surface is provided on the side wall of the closing plate (14) at one end close to the thermal insulation plate (13).

5. A waterproof testing device for sensor production according to claim 1, characterized in that: The top wall of the lower box body (1) is symmetrically provided with a first opening, a first cover plate (3) is arranged in the second opening, the top wall of the upper box body (2) is provided with a second opening, a second cover plate (4) is arranged in the second opening, handles are installed on the upper surfaces of the first cover plate (3) and the second cover plate (4), and sealing strips are arranged around the second cover plate (4).

6. A waterproof testing device for sensor production according to claim 1, characterized in that: A driving mechanism is installed on the side wall of the test box, for driving the first conveyor belt (8) and the second conveyor belt (10) to rotate.

7. A waterproof testing device for sensor production according to claim 1, characterized in that: The upper box body (2) is provided with mounting openings on both side walls thereof, and a water circulation mechanism (5) is arranged in the mounting openings. The water circulation mechanism (5) comprises a water tank (18) fixed in the mounting openings, and semiconductor cooling plates (19) are installed on the two side walls of the water tanks (18) which are separated from each other. A water inlet pipe (20) and a water outlet pipe (21) are respectively connected to the two side walls of the water tank (18), and one end of the water inlet pipe (20) and the water outlet pipe (21) are both connected to the second test chamber (7). A water pump is installed on the water inlet pipe (20), and a pressure valve (22) is installed on the water outlet pipe (21). A water supply pipe (23) is connected to the top wall of the water tank (18).

8. A waterproof testing device for sensor production according to claim 7, characterized in that: A temperature sensor (16) is installed in the second test chamber (7).

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