Magnetic control switch temperature sensor testing device

Abstract

The utility model relates to a magnetically controlled switch temperature sensor testing device, which comprises a control unit. The man-machine interaction unit is in electric signal connection with the control unit; a placing position for fixing the magnetically controlled switch temperature sensor is arranged in the box body; the action module is in electric signal connection with the control unit, is arranged on the box body corresponding to the placement position, and is used for performing downward pressing driving on the magnetically controlled switch temperature sensor; the direct-current regulating power supply is in electric signal connection with a temperature sensing head in the magnetically controlled switch temperature sensor to be tested and the control unit; the resistance detection unit is in electric signal connection with a temperature sensing head in the magnetically controlled switch temperature sensor to be detected and the control unit; and the magnetic flux detection unit is in electric signal connection with the magnetically controlled switch in the magnetically controlled switch temperature sensor to be detected and the control unit. The magnetic control switch temperature sensor testing device can effectively test various performance parameters of the magnetic control switch temperature sensor.

Description

Technical Field

[0001] This utility model relates to a magnetically controlled switch temperature sensor testing device. Background Technology

[0002] A magnetic switch temperature sensor is a device that can perform switching actions, detect temperature, and control the state of a magnetic switch based on temperature changes.

[0003] Figure 1 A magnetically controlled switch temperature sensor is shown. Its working principle is as follows: A temperature sensing head fixed on the surface of the heat collection plate 1 is pressed down by more than 7mm, causing the magnetic material 23 in the magnetic switch to be positioned between the magnet 22 and the guide switch 24. The guide switch 24 then forms a circuit, putting the magnetically controlled switch temperature sensor in the open state. When this sensor is used on a stove, it can determine whether a pot is placed on the sensor. The heat collection plate 1 generates different resistances based on the temperature detected by the temperature sensing head 8, which are fed back in the feedback loop to achieve temperature control. When the travel of the component containing the heat collection plate 1 is less than 7mm, the guide switch 24 is disconnected, closing the circuit.

[0004] When this type of magnetic control switch temperature sensor is used on the stove burner, it is always in a high-temperature state. The temperature of the temperature sensing head can reach 280℃, while the ambient temperature of the magnetic control switch inside the cavity can reach 90℃. Therefore, there are very high requirements for the resistance of the magnetic control switch, the temperature sensing head circuit, and the spring. Not only must the magnetism in the magnetic control switch not be reduced at high temperatures, but the resistance of the sensing head cannot deviate by more than 5% at a certain temperature, and the elasticity of the spring 3 must not exceed 10%.

[0005] However, there is currently no testing device for the performance of magnetically controlled temperature sensors, so their performance cannot be effectively evaluated. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a magnetically controlled switch temperature sensor testing device that can effectively test various performance parameters of the magnetically controlled switch temperature sensor.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a magnetically controlled switch temperature sensor testing device, wherein the magnetically controlled switch temperature sensor includes a base, a heat collection plate disposed on the top of the base based on a spring that extends and retracts vertically, a temperature sensing head disposed in the base and fixed on the heat collection plate, and a magnetically controlled switch disposed in the base and partially linked with the temperature sensing head; characterized in that: it includes

[0008] Control unit;

[0009] The human-computer interaction unit is electrically connected to the control unit.

[0010] The enclosure has a designated space inside for a fixed magnetic switch temperature sensor.

[0011] The action module, which is electrically connected to the control unit and is mounted on the housing corresponding to the placement position, is used to drive the magnetic switch temperature sensor downwards.

[0012] A DC power supply is electrically connected to the temperature sensor, magnetic switch, and control unit.

[0013] The resistance detection unit is electrically connected to the temperature sensor head and the control unit.

[0014] The magnetic flux detection unit is electrically connected to the magnetic control switch and control unit.

[0015] Preferably, the actuation module is a straight-line cylinder.

[0016] As an improvement, a pressure sensor is also included for detecting the pressure of the temperature sensor of the fixed magnetic switch on the action module, and the pressure sensor is electrically connected to the control unit.

[0017] Preferably, the pressure sensor is positioned at the point where the spring operates.

[0018] As an improvement, a power detection unit is also included, which is electrically connected to the control module and is electrically connected to the temperature sensing head in the temperature sensor of the magnetic switch under test.

[0019] As an improvement, the enclosure is equipped with a temperature regulator that is electrically connected to the control unit.

[0020] As an improvement, the enclosure is equipped with a humidity regulator that is electrically connected to the control unit.

[0021] As an improvement, an alarm that is electrically connected to the control unit is also included.

[0022] Compared with existing technologies, the advantages of this invention are as follows: The magnetically controlled switch temperature sensor testing device of this invention can perform multiple pressing operations on the magnetically controlled switch temperature sensor to conduct durability tests. Furthermore, during the testing process, the resistance and magnetic flux can be detected by the resistance detection unit and the magnetic flux detection unit respectively, thereby obtaining the fluctuations in resistance and magnetic flux to acquire relevant performance parameters for durability testing. This magnetically controlled switch temperature sensor testing device enables the testing and verification of the performance evaluation of the magnetically controlled switch temperature sensor. Attached Figure Description

[0023] Figure 1This is a structural diagram of an existing magnetically controlled temperature sensor.

[0024] Figure 2 for Figure 1 Sectional view of part A.

[0025] Figure 3 for Figure 1 Sectional view of part B.

[0026] Figure 4 This is a block diagram of the magnetic switch temperature sensor testing device in an embodiment of this utility model. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] like Figure 4 As shown, the magnetic switch temperature sensor testing device in this embodiment is used to perform durability testing on the magnetic switch temperature sensor.

[0029] The magnetically controlled switch temperature sensor in this embodiment includes a base 10, a heat collection plate 1 mounted on top of the base 10 based on a spring 3 that extends vertically, a temperature sensing head 8 mounted inside the base 10 and fixed to the heat collection plate 1, and a magnetically controlled switch 2 mounted inside the base 10 and partially linked with the temperature sensing head 8. Specifically, the spring 3 is mounted vertically inside the base 10, with its lower end fixed to the base 10 and its upper end fixed to the heat collection plate 1. When the heat collection plate 1 is pressed down, the spring 3 is compressed, and the temperature sensing head 8 moves down synchronously with the heat collection plate 1, attaching to the heat collection plate 1. The heat from the heat collection plate 1 is transferred to the temperature sensing head 8, thereby enabling temperature detection. Simultaneously, the resistance of the temperature sensing head 8 connected in the detection circuit changes depending on the temperature.

[0030] Typical durability tests include the number of normal switching cycles, changes in spring pressure 3, changes in resistance of temperature sensor 8, and changes in magnetic flux of magnetic switch 2.

[0031] Based on the above test content, the magnetically controlled switch temperature sensor test device in this embodiment includes a control unit 100, a human-machine interface unit 200, a housing 300, an action module 400, a DC power supply 500, a resistance detection unit 600, a magnetic flux detection unit 700, a pressure sensor 800, and a power detection unit 900. The human-machine interface unit 200, action module 400, DC power supply 500, resistance detection unit 600, magnetic flux detection unit 700, pressure sensor 800, and power detection unit 900 are respectively electrically connected to the control unit 100.

[0032] The human-machine interface unit 200 is mainly used by users to perform test operations and view test results. Depending on the needs, the human-machine interface unit 200 may include a display screen, operation keys, and other components. For ease of testing, the human-machine interface unit 200 and the control unit 100 can be integrated into an operating console and placed on one side of the housing 300. Alternatively, the human-machine interface unit 200 and the control unit 100 can be mounted on the housing 300.

[0033] The enclosure 300 has an internal storage space. To facilitate the testing of the magnetic switch temperature sensor, a placement position for fixing the magnetic switch temperature sensor is provided inside the enclosure 300. The specific structure of the placement position can adopt various structures that are easy to fix, such as setting a plate inside the enclosure 300, and opening a placement slot on the plate for placing the magnetic switch temperature sensor as the placement position of the magnetic switch temperature sensor.

[0034] An actuation module 400 is disposed on the housing 300 corresponding to the placement position. This actuation module 400 is used to drive the magnetic switch temperature sensor downwards and to release the downward pressure on the magnetic switch temperature sensor. In this embodiment, the actuation module 400 is a linear cylinder, and the control module controls the downward pressure cycle and downward pressure stroke of the actuation module 400.

[0035] During testing, when the control module 400 presses down on the magnetic switch temperature sensor, the module acts on the heat collector plate 1, causing it to move downwards and compressing the spring 3. The temperature sensing head moves along with the heat collector plate 1. As the temperature sensing head moves downwards, it causes the magnet in the magnetic switch 2 to shift, thus changing the switching state of the magnetic switch 2. When the control module 400 releases the pressure on the magnetic switch temperature sensor, the heat collector plate 1 and the temperature sensing head 8 reset under the action of the spring 3, and the switching state of the magnetic switch 2 also resets.

[0036] During testing, based on the action module 400 driving the action of the magnetic switch temperature sensor, it is necessary to obtain some durability parameters of the magnetic switch temperature sensor during its operation as a basis for evaluating its durability performance.

[0037] In this embodiment, the DC regulated power supply 500, resistance detection unit 600, pressure sensor 800, and power detection unit 900 are suitable for detecting the required durability parameters.

[0038] As spring 3 compresses and resets, its elastic force changes. This elastic force can be represented by the pressure feedback from its acting object. In this embodiment, a pressure sensor 800 is installed at the point of action of spring 3. Specifically, it can be installed at the connection point of spring 3 on the base 10 or at the connection point of spring 3 on the heat collection plate 1. This pressure sensor 800 is used to detect the pressure applied by the action module 400 to the magnetic control switch temperature sensor. Based on the set pressing stroke, the pressing force of spring 3 is relatively fixed. If the pressure fluctuation exceeds a certain threshold, the magnetic control switch temperature sensor is deemed unqualified. Otherwise, the magnetic control switch temperature sensor is continuously pressed until the set number of tests is reached.

[0039] Specifically, the DC power supply 500 is electrically connected to the temperature sensing head 8 and the magnetic switch 2 in the magnetic switch temperature sensor under test. During testing, the DC power supply 500 provides a set voltage to the temperature sensing head 8, and the resistance change of the temperature sensing head 8 is monitored by the resistance detection unit 600 and the power consumption of the temperature sensing head 8 is monitored by the power detection unit 900. The resistance detection unit 600 and the power detection unit 900 are electrically connected to the temperature sensing head 8 in the magnetic switch temperature sensor under test. During the test, the detection resistance is usually less than 300mΩ when pressed down and usually greater than 1MΩ when reset, and the resistance change does not exceed 5% under the same conditions. During the test, if the detected resistance does not meet the requirements and the resistance change is too large, the magnetic switch temperature sensor under test is considered unqualified.

[0040] The magnetic flux detection unit 700 is electrically connected to the magnetic control switch 2 in the magnetic control switch temperature sensor under test. With the DC power supply 500 providing power, the magnetic flux detection unit 700 performs magnetic flux tests on the magnetic control switch 2 before starting the test, and tests the magnetic flux of the magnetic control switch 2 after completing the required number of stroke counts. The two magnetic flux data points are compared; if the magnetic flux deviation exceeds 10%, the magnetic control switch temperature sensor is deemed unqualified.

[0041] In addition, to make the testing environment similar to that of the magnetic switch temperature sensor, a temperature regulator 301 and a humidity regulator 302, which are electrically connected to the control unit 100, are also installed inside the enclosure 300. Before testing, the control unit 100 controls the temperature regulator 301 and humidity regulator 302 to adjust the environmental parameters inside the enclosure 300 to the required temperature and humidity.

[0042] In addition, to facilitate the notification of test results, especially the notification of unqualified results, the magnetic switch temperature sensor testing device also includes an alarm 101 that is electrically connected to the control unit 100. When the test result is unqualified, the alarm 101 can be used to provide a notification.

[0043] Compared with existing technologies, the advantages of this invention are as follows: The magnetically controlled switch temperature sensor testing device of this invention can perform multiple pressing operations on the magnetically controlled switch temperature sensor to conduct durability tests. During the test, the resistance detection unit 600 and the magnetic flux detection unit 700 can respectively detect the resistance and magnetic flux fluctuations to obtain relevant performance parameters for durability testing. This magnetically controlled switch temperature sensor testing device enables the testing and verification of the performance evaluation of the magnetically controlled switch temperature sensor.

[0044] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of the invention. However, the use of these terms is merely for illustrative purposes and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A magnetically controlled switch temperature sensor testing device, wherein the magnetically controlled switch temperature sensor includes a base (10), a heat collection plate (1) disposed on the top of the base (10) based on a spring (3) that extends vertically, a temperature sensing head (8) disposed within the base (10) and fixed on the heat collection plate (1), and a magnetically controlled switch (2) disposed within the base (10) and partially linked with the temperature sensing head (8); characterized in that: include Control unit (100); The human-computer interaction unit (200) is electrically connected to the control unit (100); The enclosure (300) has a placement position for a fixed magnetic switch temperature sensor inside; The action module (400), which is electrically connected to the control unit (100) and is installed on the housing (300) corresponding to the placement position, is used to drive the magnetic switch temperature sensor downward. A DC power supply (500) is electrically connected to a temperature sensor (8), a magnetic switch (2), and a control unit (100); The resistance detection unit (600) is electrically connected to the temperature sensing head (8) and the control unit (100); The magnetic flux detection unit (700) is electrically connected to the magnetic control switch (2) and the control unit (100).

2. The magnetically controlled switch temperature sensor testing device according to claim 1, characterized in that: The action module (400) is a straight-line cylinder.

3. The magnetically controlled switch temperature sensor testing device according to claim 1 or 2, characterized in that: It also includes a pressure sensor (800) for detecting the pressure of the magnetic control switch temperature sensor under the action module (400), the pressure sensor (800) being electrically connected to the control unit (100).

4. The magnetically controlled switch temperature sensor testing device according to claim 3, characterized in that: The pressure sensor (800) is positioned at the action point of the spring (3).

5. The magnetically controlled switch temperature sensor testing device according to claim 1 or 2, characterized in that: It also includes a power detection unit (900) that is electrically connected to the control module, and the power detection unit (900) is electrically connected to the temperature sensing head (8) in the magnetic control switch temperature sensor under test.

6. The magnetically controlled switch temperature sensor testing device according to claim 1 or 2, characterized in that: The enclosure (300) is equipped with a temperature regulator (301) that is electrically connected to the control unit (100).

7. The magnetically controlled switch temperature sensor testing device according to claim 1 or 2, characterized in that: The enclosure (300) contains a humidity regulator (302) that is electrically connected to the control unit (100).

8. The magnetically controlled switch temperature sensor testing device according to claim 1 or 2, characterized in that: It also includes an alarm (101) that is electrically connected to the control unit (100).

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