Oil sensor PCB detection equipment with temperature control and oil environment simulation

Abstract

The utility model relates to sensor technical field especially, and one kind possesses temperature control and oil environment simulation's oil sensor PCB detection equipment, including box, its inner bottom surface is installed with multiple oil container and the electric heating mechanism that carries out the heating of warming up the inside of box, and its outside is equipped with the refrigeration system that carries out refrigeration in the box and is used for being responsible for the oil system that automatically supplies oil, oil discharge in oil container, the top plate is connected with the lifting mechanism that is set up on the outside wall of box, and it is embedded in the box through the opening of box top and is placed on the elastic support mechanism that is set up on the inner wall of box top, and the plug that is connected with the circuit board to be detected is installed below, the plug is set up correspondingly above and below oil container, the utility model discloses realize wide range temperature regulation and control with electric heating mechanism and refrigeration system, can accurately simulate the extreme high and low temperature environment of oil sensor PCB in practical application, and through the combination of oil container and oil system, restore the real oil contact scene.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, and in particular to a PCB testing device for an oil sensor with temperature control and oil environment simulation. Background Technology

[0002] Oil sensors, as core components for accurately monitoring key parameters of oil (such as viscosity, impurity content, temperature, and dielectric constant), are widely used in industrial automation equipment, transportation, and other fields. The performance stability of oil sensors is directly related to the operational safety and diagnostic accuracy of medical equipment such as surgical instruments and diagnostic devices, making their quality control requirements particularly stringent. The PCB (Printed Circuit Board), as the "nerve center" of the oil sensor, undertakes the core functions of signal acquisition, processing, transmission, and control command execution. Its electrical conductivity, high and low temperature stability, and resistance to oil corrosion in oil contact environments are key indicators determining the long-term reliable operation of the oil sensor. Therefore, PCBs must undergo simulated testing under actual working conditions before leaving the factory to avoid the risk of subsequent sensor failures. Utility Model Content

[0003] The present invention aims to solve the above-mentioned defects and provide an oil sensor PCB testing device with temperature control and oil environment simulation.

[0004] In order to overcome the defects in the background technology, the technical solution adopted by this utility model to solve its technical problem is: an oil sensor PCB detection device with temperature control and oil environment simulation, including a box, a number of oil containers and an electric heating mechanism for heating the inside of the box are installed on the bottom surface of the box, and a cooling system for cooling the inside of the box and an oil system for automatically supplying and discharging oil into the oil containers are provided on the outside. The top plate is connected to the lifting mechanism on the outer wall of the box. It is embedded in the box through the opening at the top of the box and placed above the elastic support mechanism on the inner wall of the box. A plug that connects to the circuit board to be tested is installed below it. The plug is arranged vertically with the oil container.

[0005] Further improvements include the installation of a slide rail along the vertical direction inside the housing, with a matching slide plate slidably mounted on the slide rail, and the top of the slide plate being connected to the lower surface of the top plate.

[0006] Further improvements include the installation of a vibration motor on the top plate.

[0007] Further improvements include the oil system comprising an oil supply unit and an oil suction unit, wherein the oil supply unit and the oil suction unit are respectively connected in parallel to the bottom of the oil container via delivery pipelines, and solenoid valves are connected in series on the pipelines between the oil supply unit and the oil container and the pipelines between the oil suction unit and the oil container.

[0008] Further improvements include the elastic support mechanism comprising a tubular cylindrical body, a stepped shaft, and a spring sleeved on the stepped shaft. The cylindrical body is vertically fixed to a preset installation position on the inner wall of the box, and the inner diameter of the cylindrical body is aligned with the small diameter end of the stepped shaft. The spring is located between the large diameter end of the stepped shaft and the cylindrical body.

[0009] The beneficial effects of this utility model are as follows: This design uses an electric heating mechanism and a cooling system to achieve a wide range of temperature control from -40℃ (low temperature limit) to 125℃ (high temperature limit), which can accurately simulate the extreme high and low temperature environment of the oil sensor PCB in actual applications and effectively detect its high and low temperature stability; by combining the oil container and the oil system, the real oil contact scenario is restored, providing a realistic environmental basis for testing the electrical conductivity and oil corrosion resistance of the PCB. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 This is the front view of this utility model; Figure 2 This is a front sectional view of the elastic support mechanism in this utility model; Figure 3 This is the left view of this utility model; In the diagram, 1-box body, 2-electric heating mechanism, 3-slide plate, 4-oil container, 5-vibration motor, 6-plug, 7-circuit board, 8-top plate, 9-elastic support mechanism, 10-lifting mechanism, 11-slide rail, 12-oil system, 13-refrigeration system; 901 - Cylinder body, 902 - Stepped shaft, 903 - Spring; 1201 - Oil supply unit, 1202 - Solenoid valve, 1203 - Oil suction unit. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort in accordance with the embodiments of the basic utility model are within the scope of protection of this utility model.

[0013] refer to Figure 1 and Figure 3 A PCB testing device for an oil sensor with temperature control and oil environment simulation includes a housing 1 with an open top, multiple oil containers 4 and an electric heating mechanism 2 for heating the inside of the housing 1 on its inner bottom surface, and a cooling system 13 for cooling the inside of the housing 1 and an oil system 12 for automatically supplying and draining oil into the oil containers 4. The top plate 8 is connected to the lifting mechanism 10 installed on the outer wall of the housing 1. With the power output of the lifting mechanism 10, the top plate 8 can be stably raised and lowered. When the top plate 8 descends, it is embedded into the housing 1 through the opening at the top of the housing 1 and placed above the elastic support mechanism 9 installed on the inner wall of the housing 1 to support the top plate 8. The elastic support mechanism 9 provides buffered and stable support to avoid damage caused by hard contact. A plug 6 is installed below it to interface with the circuit board 7 to be tested. The plug 6 is arranged vertically and vertically with the oil container 4. When the lifting mechanism 10 drives the top plate 8 to descend to the designated position, the key test points on the circuit board 7 can be completely immersed in the oil in the oil container 4, maximally simulating the real contact state of the oil sensor under actual working conditions, and ensuring the accuracy and reliability of the test data.

[0014] In a specific embodiment, to further improve the stability of the top plate 8's vertical movement, a slide rail 11 is arranged vertically inside the housing 1. A matching slide plate 3 is slidably mounted on the slide rail 11, and the top of the slide plate 3 is connected to the lower surface of the top plate 8. This design, through the guiding and cooperating structure of "slide rail + slide plate", can, on the one hand, precisely constrain the lifting trajectory of the top plate 8, avoiding problems such as deviation and shaking of the top plate 8 due to uneven force during movement; on the other hand, the sliding contact between the slide plate 3 and the slide rail 11 can evenly distribute the lifting force of the top plate 8, reducing the load loss of the lifting mechanism 10, while ensuring that the top plate 8 always moves smoothly in the vertical direction, providing reliable structural support for the stable immersion of oil at the key test points of the subsequent circuit board 7.

[0015] In a specific embodiment, in order to accurately simulate the vibration environment of the oil sensor under actual working conditions, a vibration motor 5 is installed on the top plate 8. The vibration motor 5 can output vibration signals of different frequencies and amplitudes according to the detection requirements. The vibration motor 5 cooperates with the elastic support mechanism 9 to amplify the vibration, thereby simulating the vibration environment of the oil sensor in the actual process.

[0016] In a specific embodiment, the oil system 12 includes an oil supply unit 1201 and an oil suction unit 1203. The oil supply unit 1201 is used to deliver a specified type and dosage of oil to the oil container 4, while the oil suction unit 1203 is used to extract and recycle waste oil or oil to be replaced from the oil container 4. Both are connected in parallel to the bottom of the oil container 4 through dedicated delivery pipelines, that is, the ends of the oil supply pipeline and the oil suction pipeline are connected to the interface at the bottom of the oil container 4, forming an "in-out" oil circulation path. Meanwhile, solenoid valves 1202 are connected in series on the pipeline between the oil supply unit 1201 and the oil container 4, and on the pipeline between the oil suction unit 1203 and the oil container 4. By independently controlling the on / off state of the two solenoid valves 1202, the working mode of the oil system 12 can be flexibly switched: when the solenoid valve 1202 on the oil supply pipeline is opened and the solenoid valve 1202 on the oil suction pipeline is closed, oil is supplied to the oil container 4; when the solenoid valve 1202 on the oil suction pipeline is opened and the solenoid valve 1202 on the oil supply pipeline is closed, oil is discharged from the oil container 4; when both valves are closed, the oil in the oil container 4 can be kept sealed, meeting the requirement of a stable oil environment during the detection process.

[0017] For specific embodiments, please refer to Figure 2 The elastic support mechanism 9 includes a tubular cylindrical body 901, a stepped shaft 902, and a spring 903 sleeved on the stepped shaft 902. The cylindrical body 901 is vertically fixed to a preset installation position on the inner wall of the housing 1, and the inner diameter of the cylindrical body 901 is connected to the small diameter end of the stepped shaft 902, so that the small diameter end of the stepped shaft 902 can slide along the inner diameter of the cylindrical body 901. The spring 903 is located between the large diameter end of the stepped shaft 902 and the cylindrical body 901, and is used to provide elastic support for the large diameter end of the stepped shaft 902.

[0018] Working principle: First, start the lifting mechanism 10, which drives the top plate 8 to move vertically to the preset assembly position; then, pre-assemble the circuit board 7 to be tested with the plug 6 below the top plate 8. The plug 6 adopts a convenient wiring design, which can quickly realize the electrical connection between the circuit board 7 and the testing circuit, greatly simplifying the wiring operation and improving the assembly efficiency. The lifting mechanism 10 is activated to slowly lower the top plate 8 until the lower surface of the top plate 8 is stably placed on the elastic support mechanism 9 installed on the inner wall of the enclosure 1. The elastic support mechanism 9 provides stable elastic support for the top plate 8. At this time, according to the testing requirements, heating is provided by the electric heating mechanism 2 inside the enclosure 1, or cooling is provided by the cooling system 13 outside the enclosure 1. The ambient temperature inside the enclosure is precisely controlled to simulate the extreme temperature environment of the circuit board 7 in actual operation. The temperature control range covers -40℃ (low temperature limit) to 125℃ (high temperature limit) to meet the temperature resistance performance testing requirements under different working conditions. The oil system 12 is started, and the oil supply unit 1201 delivers the specified oil into the oil container 4 through the pipeline until the oil level covers the key test points on the circuit board 7, so that the circuit board 7 is in an oil contact state consistent with the actual use scenario, and the performance test in the oil environment is completed. After the test is completed, the oil system 12 switches to the recovery mode, and the oil suction unit 1203 extracts and recovers the oil in the oil container 4 through the pipeline, which is convenient for subsequent recycling or harmless treatment, and at the same time cleans the oil container 4 for the next test.

[0019] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A PCB inspection device for oil sensors with temperature control and oil environment simulation, characterized in that, It includes a box (1), which has multiple oil containers (4) installed on its inner bottom surface and an electric heating mechanism (2) for heating the inside of the box (1). It is equipped with a refrigeration system (13) for cooling the inside of the box (1) and an oil system (12) for automatically supplying and discharging oil into the oil containers (4). The top plate (8) is connected to the lifting mechanism (10) provided on the outer wall of the box (1). It is embedded in the box (1) through the opening at the top of the box (1) and placed above the elastic support mechanism (9) provided on the inner wall of the box (1). A plug (6) that docks with the circuit board (7) to be tested is installed below it. The plug (6) is arranged vertically and vertically with the oil container (4).

2. The PCB inspection device for an oil sensor with temperature control and oil environment simulation as described in claim 1, characterized in that: The box (1) is provided with a slide rail (11) arranged vertically inside, and a matching slide plate (3) is slidably arranged on the slide rail (11), and the top of the slide plate (3) is connected to the lower surface of the top plate (8).

3. The PCB inspection device for an oil sensor with temperature control and oil environment simulation as described in claim 1, characterized in that: A vibration motor (5) is installed on the top plate (8).

4. The PCB inspection device for an oil sensor with temperature control and oil environment simulation as described in claim 1, characterized in that: The oil system (12) includes an oil supply unit (1201) and an oil suction unit (1203). The oil supply unit (1201) and the oil suction unit (1203) are connected in parallel to the bottom of the oil container (4) through a delivery pipeline. Solenoid valves (1202) are connected in series on the pipeline between the oil supply unit (1201) and the oil container (4) and on the pipeline between the oil suction unit (1203) and the oil container (4).

5. The PCB inspection device for an oil sensor with temperature control and oil environment simulation as described in claim 1, characterized in that: The elastic support mechanism (9) includes a tubular cylindrical body (901), a stepped shaft (902), and a spring (903) sleeved on the stepped shaft (902). The cylindrical body (901) is vertically fixed to a preset installation position on the inner wall of the box (1), and the inner diameter of the cylindrical body (901) is connected to the small diameter end of the stepped shaft (902). The spring (903) is located between the large diameter end of the stepped shaft (902) and the cylindrical body (901).

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