Test tool and test system
By setting a heat exchange runner and a flowing heat exchange medium on the substrate of the test tool, the problem of insufficient measurement accuracy of the force sensor under different temperature conditions is solved, and the accuracy of brake calibration is improved.
Patent Information
- Application Number
- CN202420790684.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-04-16
AI Technical Summary
In an electronic mechanical braking system, the measurement accuracy of the force sensor is limited under different temperature conditions, resulting in errors in brake calibration.
A test tool is designed, including a base body and a force sensor. A heat exchange runner is installed on the base body, and the flowing heat exchange medium and the force sensor are heat exchanged to ensure that the force sensor works within the appropriate temperature range.
Through heat exchange between the heat exchange runner and the medium, the accuracy of the force sensor when measuring applied force is improved, especially under extreme temperature conditions, reducing calibration errors.
Smart Images
Figure CN222837724U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of automobile technology, and in particular, to a test tool and a test system. Background Art
[0002] Electro-mechanical Brake (EMB) is an advanced braking technology that replaces the traditional hydraulic or pneumatic brake system and uses a combination of electronic and mechanical methods to perform braking operations. It has a simple structure, reduces hydraulic or pneumatic pipelines, and reduces potential leakage risks. It also has higher response speed and control accuracy, which helps to improve safety.
[0003] With the development of automobile intelligence, autonomous driving will become more and more popular. In order to ensure safety, higher requirements are placed on vehicle braking, and thus higher requirements are placed on the braking capacity of the brake. In related technologies, electronic mechanical brakes, such as EMB calipers, detect their own braking force through built-in force sensors, and built-in force sensors usually require clamping force testing devices for calibration. During the calibration process, the EMB calipers need to be tested under different test temperature conditions, and the applicable temperature range for the normal operation of the force sensor of the clamping force measuring device is limited. Therefore, too high or too low test temperatures will affect the measurement accuracy of the force sensor of the clamping force measuring device, which will lead to errors in the calibration results. Utility Model Content
[0004] The purpose of the present disclosure is to provide a test fixture and a test system to improve the measurement accuracy of the force applied to the applicator, so as to at least partially solve the above technical problems.
[0005] In order to achieve the above-mentioned purpose, according to the first aspect of the present disclosure, a test fixture is provided, including a substrate and a force sensor arranged on the substrate, the force sensor is used to measure the force of a force-applying member applied to the substrate, and a heat exchange flow channel is arranged on the substrate, and a heat exchange medium flows in the heat exchange flow channel for heat exchange with the force sensor.
[0006] Optionally, the heat exchange channel at least partially extends in a curved shape.
[0007] Optionally, the heat exchange channel includes at least one liquid storage area.
[0008] Optionally, the base includes a first plate and a second plate, the second plate is movable relative to the first plate so as to abut against the force sensor located between the first plate and the second plate, the heat exchange channel is formed on at least one of the first plate and the second plate, and / or the base also includes an intermediate piece located between the first plate and the second plate, the heat exchange channel is formed on the intermediate piece.
[0009] Optionally, the intermediate member is configured as an intermediate plate body, the force sensor is disposed on the first plate body and passes through the intermediate plate body toward the second plate body, or the force sensor is disposed on the intermediate plate body.
[0010] Optionally, the test fixture also includes a connecting piece, which includes a connecting rod and a limiting portion, one end of the connecting rod is connected to the middle plate body or the first plate body, the other end of the connecting rod passes through the second plate body and is connected to the limiting portion, the second plate body is movably arranged along the extension direction of the connecting rod, and the outer surface of the second plate body facing away from the middle plate body has a recessed groove for accommodating the limiting portion.
[0011] Optionally, the heat exchange channel has a liquid inlet and a liquid outlet, and both the liquid inlet and the liquid outlet are provided with openable and closable joints.
[0012] Optionally, a temperature sensor is arranged on the substrate.
[0013] According to a second aspect of the present disclosure, a test system is provided, comprising the test fixture as described above, and a temperature regulating module connected to the test fixture, wherein the temperature regulating module is used to regulate the temperature of a heat exchange medium flowing through the heat exchange channel.
[0014] Optionally, the temperature regulating module includes a temperature regulating unit, a liquid storage structure, a pumping device, a liquid inlet pipeline and a liquid outlet pipeline. The liquid storage structure is connected to the liquid inlet of the heat exchange channel through the liquid inlet pipeline, and the liquid storage structure is connected to the liquid outlet of the heat exchange channel through the liquid outlet pipeline. The pumping device is provided on the liquid inlet pipeline and / or the liquid outlet pipeline, and the temperature regulating unit is used to adjust the temperature of the heat exchange medium in the liquid storage structure.
[0015] Optionally, the temperature regulating module includes a controller, and the controller is respectively connected to the pumping device, the temperature sensor arranged on the substrate, and the temperature regulating unit by signals.
[0016] Optionally, the temperature regulating unit comprises a temperature box, and the liquid storage structure is located in the temperature box.
[0017] Through the above technical scheme, the force applied to the substrate can be measured by a force sensor. During the measurement process, a heat exchange medium flows in the heat exchange flow channel so as to be able to directly or indirectly exchange heat with the force sensor so that the force sensor is placed in a suitable working temperature environment to improve the accuracy of measuring the applied force. Specifically, when the force sensor is lower than the suitable working temperature range, the heat exchange medium can act on the force sensor through heat exchange to increase the ambient temperature. When the force sensor is higher than the suitable working temperature range, the heat exchange medium can act on the force sensor through heat exchange to lower the ambient temperature. Therefore, when the test fixture is used to calibrate the built-in force sensor of the EMB caliper, the calibration accuracy can be improved.
[0018] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:
[0020] Figure 1 is a schematic diagram of the overall structure of a test tool provided in an exemplary embodiment of the present disclosure;
[0021] Figure 2 is a schematic structural diagram of the extension of the heat exchange flow channel curve provided in an exemplary embodiment of the present disclosure;
[0022] Figure 3 is a schematic diagram of a structure in which a liquid storage area is formed in a middle plate body in an exemplary embodiment of the present disclosure;
[0023] Figure 4 is a schematic diagram of a structure in which a limiting portion provided in an exemplary embodiment of the present disclosure is placed in a sink;
[0024] Figure 5 is a schematic structural diagram of a connecting rod and a limiting portion provided in an exemplary embodiment of the present disclosure;
[0025] Figure 6 is a schematic diagram of a testing system provided in an exemplary embodiment of the present disclosure.
[0026] Description of Reference Numerals
[0027] 1. Base; 11. First plate; 12. Second plate; 121. Sink; 13. Intermediate piece; 131. Intermediate plate; 1311. Wiring channel; 2. Force sensor; 3. Heat exchange channel; 31. Liquid storage area; 32. Liquid inlet; 33. Liquid outlet; 4. Connector; 41. Connecting rod; 42. Limiting part; 5. Joint; 6. Temperature sensor; 7. Temperature regulating module; 71. Temperature regulating unit; 711. Temperature box; 72. Liquid storage structure; 73. Pumping device; 74. Liquid inlet pipeline; 75. Liquid outlet pipeline; 8. Controller. DETAILED DESCRIPTION
[0028] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.
[0029] In the present disclosure, unless otherwise stated, "inside" and "outside" refer to the inside and outside of the outline of the corresponding component; "far" and "near" refer to the distance and nearness of the corresponding component in space relative to another component. In addition, the terms "first", "second", etc. used in the present disclosure are to distinguish one element from another element and do not have order and importance. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0030] According to the first aspect of the present disclosure, referring to Figures 1 to 6 The present disclosure provides a test fixture, which includes a substrate 1 and a force sensor 2 arranged on the substrate 1, the force sensor 2 is used to measure the force of a force-applying member applied to the substrate 1, and a heat exchange channel 3 is arranged on the substrate 1. A heat exchange medium flows in the heat exchange channel 3 for heat exchange with the force sensor 2.
[0031] Through the above technical scheme, the force applied to the substrate 1 can be measured by the force sensor 2. During the measurement process, a heat exchange medium flows in the heat exchange channel 3, so as to be able to directly or indirectly exchange heat with the force sensor 2 so that the force sensor 2 is placed in a suitable working temperature environment, so as to improve the accuracy of measuring the applied force. Specifically, when the force sensor 2 is lower than the suitable working temperature range, the heat exchange medium can act on the force sensor 2 through heat exchange to increase the ambient temperature. When the force sensor 2 is higher than the suitable working temperature range, the heat exchange medium can act on the force sensor 2 through heat exchange to lower the ambient temperature. Therefore, when the test fixture is used to calibrate the built-in force sensor of the EMB caliper, the calibration accuracy can be improved.
[0032] In an exemplary application scenario, the force-applying member may be, for example, a clamping member, and the clamping force of the clamping member may be measured by a test fixture. The clamping member acts on opposite sides of the substrate 1 to apply the clamping force, and the clamping force may be measured by the force sensor 2. During this process, a heat exchange medium may be introduced into the heat exchange channel 3 to perform heat exchange with the force sensor 2, thereby placing the force sensor 2 in a temperature environment suitable for working, thereby improving the accuracy of measuring the clamping force.
[0033] In another exemplary application scenario, the force-applying member may be, for example, a brake of a vehicle, and a built-in force sensor is installed inside the brake of the vehicle to monitor the force applied by the brake and feed it back to the control module, thereby changing the braking state of the brake. The brake of the vehicle may have assembly accuracy problems during the assembly process, which may affect the coaxiality of the built-in force sensor during installation, and there may be deviations in the measurement results. At this time, the built-in force sensor inside the brake of the vehicle can be calibrated by a test fixture. For example, the working range of the brake of the vehicle (such as an EMB caliper) is -40°C to 120°C. Therefore, the calibration of the built-in force sensor of the EMB caliper needs to be carried out within a temperature range of -40°C to 120°C. The high-precision sensors currently used in the clamping force test fixture, such as the force sensor 2 provided in the present disclosure, have an operating temperature range of -10°C to 70°C. During calibration, the clamping force test fixture and the EMB caliper are usually placed in a test incubator. By adjusting the temperature in the test incubator, the EMB calibrator is calibrated within a temperature range of -40°C to 120°C. When the temperature in the test incubator is lower than, for example, -10°C or higher than 70°C, the measurement result of the force sensor 2 will be inaccurate, which may easily lead to deviations in the calibration of the built-in force sensor of the EMB caliper.
[0034] Therefore, by providing the heat exchange channel 3, heat exchange can be performed with the force sensor 2 so that it can work within a suitable temperature range (eg, -10°C to 70°C), thereby improving the accuracy of calibration.
[0035] It should be noted that the clamping force applied to the substrate 1 is not necessarily a clamping force acting on both sides at the same time, but may also be a unilateral force. For example, one side of the substrate 1 of the test fixture may be connected to a fixed bracket, etc., and an extrusion force may be applied to the other side of the substrate 1. Similarly, the force applied to the substrate 1 may be measured by the force sensor 2, and the ambient temperature when the force sensor 2 acts may be increased or decreased by a heat exchange medium according to actual working conditions, so that the force sensor 2 is placed in a temperature environment suitable for working, thereby improving the accuracy of measuring the applied force. The present disclosure is not limited to this.
[0036] In some embodiments, reference Figures 1 to 3The base 1 may include a first plate 11 and a second plate 12. The second plate 12 can move relative to the first plate 11 so as to abut against the force sensor 2 located between the first plate 11 and the second plate 12, so that the force sensor 2 can measure the applied force. A heat exchange channel 3 is formed on at least one of the first plate 11 and the second plate 12, that is, the heat exchange channel 3 can be formed on the first plate 11 or the second plate 12, or the heat exchange channel 3 is formed on both the first plate 11 and the second plate 12, so that the heat exchange medium can indirectly exchange heat with the force sensor 2 through the first plate 11 and / or the second plate 12. For example, when the applied force is small, or when the strength requirement for the first plate body 11 is not high, the heat exchange channel 3 can be formed on the first plate body 11. At this time, the heat exchange medium can indirectly exchange heat with the force sensor 2 through the first plate body 11. That is, the heat exchange medium can exchange heat with the first plate body 11 when flowing on the first plate body 11, and then the first plate body 11 can exchange heat with the force sensor 2.
[0037] In addition, the base 1 further includes an intermediate member 13 located between the first plate 11 and the second plate 12. The heat exchange channel 3 may be formed on the intermediate member 13, that is, the heat exchange channel 3 may be located between the first plate 11 and the second plate 12. In some embodiments, referring to Figures 1 to 3 , the middle piece 13 can be constructed as an intermediate plate 131, which is located between the first plate 11 and the second plate 12, so as to improve the strength of the first plate 11 and the second plate 12 when subjected to applied force during the detection process, wherein the heat exchange channel 3 can be formed on the intermediate plate 131 for the circulation of heat exchange medium, and the intermediate plate 131 can protect the heat exchange channel 3 to a certain extent. In some other possible embodiments not shown in the drawings, the middle piece 13 can also be a separately arranged external pipeline for the circulation of heat exchange medium, and the heat exchange channel 3 is formed inside the external pipeline, so that the heat exchange medium circulating in the heat exchange channel 3 can directly exchange heat with the force sensor 2 through the external pipeline, and the present disclosure does not make specific limitations on this.
[0038] It is understandable that, referring to Figures 1 to 3, the force sensor 2 can be arranged on the first plate body 11 and pass through the intermediate plate body 131 toward the second plate body 12. In this way, the heat exchange medium can indirectly exchange heat with the force sensor 2 through the intermediate plate body 131, that is, the heat exchange medium can exchange heat with the intermediate plate body 131 when flowing on the intermediate plate body 131, and then the intermediate plate body 131 can exchange heat with the force sensor 2, so that the force sensor 2 is placed in a temperature environment suitable for working. In addition, in some other possible embodiments not shown in the drawings, the force sensor 2 can also be directly arranged on the intermediate plate body 131, which will not affect the measurement of the applied force by the force sensor 2. The present disclosure does not make specific limitations on this.
[0039] It is understandable that in order to improve the accuracy of the measurement, the number of the force sensors 2 can be set to be multiple, refer to Figure 2 and Figure 3 The present disclosure exemplarily sets the number of force sensors 2 to three. At the same time, a wiring channel 1311 for the force sensor 2 is also formed on the middle plate 131. It can be understood that the heat exchange channel 3 should be set to avoid the wiring channel 1311 of the force sensor 2.
[0040] The heat exchange channel 3 can be constructed in any suitable manner. For example, the heat exchange channel 3 is formed inside the middle plate 131. In some embodiments, refer to Figure 2 , the heat exchange channel 3 can at least partially extend in a curved shape, so that the volume of the heat exchange channel 3 in the middle plate 131 can be increased, thereby increasing the heat exchange area of the heat exchange medium, and at the same time, the flow time of the heat exchange medium in the middle plate 131 can be extended, so as to improve the heat exchange capacity between the middle plate 131 and the force sensor 2. It can be understood that the cross-sectional area of the heat exchange channel 3 and the specific shape of the curved extension in the middle plate 131 can be selected according to actual needs. Without affecting the strength of the middle plate 131, the cross-sectional area of the heat exchange channel 3 can be designed to be larger, the length of the curved extension can be longer, and the distribution range can be larger, so as to improve the heat exchange capacity of the heat exchange medium. The present disclosure is not limited to this.
[0041] In other embodiments, reference Figure 3 The heat exchange channel 3 may include at least one liquid storage area 31. For example, the present disclosure provides two liquid storage areas 31 inside the middle plate 131. Similarly, the liquid storage area 31 can increase the volume of the heat exchange channel 3 in the middle plate 131, thereby increasing the heat exchange area of the heat exchange medium, so as to improve the heat exchange capacity between the middle plate 131 and the force sensor 2. In addition, the two liquid storage areas 31 can be connected to each other so that the heat exchange medium in the two liquid storage areas 31 can flow through each other, so as to achieve uniform heat exchange with the middle plate 131. The present disclosure is not limited thereto.
[0042] In some embodiments, reference Figures 1 to 3 The heat exchange channel 3 has a liquid inlet 32 and a liquid outlet 33. It can be understood that during the use of the test fixture, the heat exchange medium indirectly exchanges heat with the force sensor 2 through the intermediate plate 131, and the temperature of the heat exchange medium will increase or decrease, resulting in a decrease in heat exchange capacity. Therefore, the heat exchange medium can be replaced through the liquid inlet 32 and the liquid outlet 33, for example, the heat exchange medium is circulated through the liquid inlet 32 and the liquid outlet 33 to ensure the heat exchange capacity of the heat exchange medium. In addition, the liquid inlet 32 and the liquid outlet 33 are both provided with a closable joint 5. When the test fixture is working, the joint 5 can be opened, the liquid inlet 32 is connected to the liquid inlet pipeline 74 (to be described below), and the liquid outlet 33 is connected to the liquid outlet pipeline 75 (to be described below) to facilitate the circulation of the heat exchange medium. When the test fixture is stored, the joint 5 can be closed to prevent impurities from entering the heat exchange channel 3. The connector 5 may be any suitable type of structure, such as a quick connector, which can be closed when disconnected and opened when connected; or the connector 5 may be a common pipe connector, and a plug may be provided to facilitate opening and closing of the pipe connector. The present disclosure is not limited thereto.
[0043] In order to adjust the ambient temperature of the force sensor 2 during operation by means of a heat exchange medium, a temperature sensor 6 may be provided to monitor the temperature. Figure 2 and Figure 3 The temperature sensor 6 can be arranged on the base 1. For example, the temperature sensor 6 can be arranged on the intermediate plate 131. In this way, the temperature of the intermediate plate 131 can be monitored by the temperature sensor 6, so as to understand the ambient temperature when the force sensor 2 is working. In addition, the temperature sensor 6 can be protected to a certain extent by the intermediate plate 131 to reduce the possibility of accidental damage to the temperature sensor 6. Of course, the temperature sensor 6 can also be arranged on the first plate 11 without affecting normal operation, and the present disclosure is not limited thereto.
[0044] In some embodiments, reference Figures 1 to 5The test fixture may also include a connector 4, which includes a connecting rod 41 and a limiting portion 42. One end of the connecting rod 41 is connected to the intermediate plate 131 or the first plate 11, so that the connector 4 can be fixed to the intermediate plate 131 or the first plate 11. The other end of the connecting rod 41 passes through the second plate 12 and is connected to the limiting portion 42. The outer surface of the second plate 12 facing away from the intermediate plate 131 has a sink 121 for accommodating the limiting portion 42, so that the second plate 12 can be limited and the possibility of the second plate 12 being separated from the connecting rod 41 can be reduced. The second plate 12 is movably arranged along the extension direction of the connecting rod 41, so that the second plate 12 can move relative to the first plate 11 on the connecting rod 41, so that it can abut against the force sensor 2 located between the first plate 11 and the second plate 12. It should be noted that when the second plate 12 abuts against the force sensor 2 , the limiting portion 42 is still completely in the recess 121 so as not to affect the force applied by the force-applying member to the second plate 12 , such as the clamping force, thereby avoiding the connection member 4 from affecting the measurement of the clamping force.
[0045] It is understandable that the connector 4 can be constructed in any suitable manner, for example, the connector 4 can be constructed as a connecting bolt, which passes through the second plate body 12 and is threadedly connected to the intermediate plate body 131 or the first plate body 11, wherein the connecting bolt includes a screw rod provided with threads, a head, and a middle section connecting the head 5 and the screw rod, the screw rod and the middle section form a connecting rod 41, the second plate body 12 can move relative to the first plate body 11 on the middle section, and the head forms a limiting portion 42 and is placed inside the sink 121 to limit the second plate body 12. In addition, the connector 4 can also be constructed as a guide rod with one end welded to the intermediate plate body 131 or the first plate body 11, the guide rod passes through the second plate body 12 and the end of the guide rod away from the intermediate plate body 131 or the first plate body 11 is threadedly connected with a locking nut, the guide rod forms the connecting rod 41, and the locking nut forms a limiting portion 42 and is placed inside the sink 121 to limit the second plate body 12. The present disclosure is not limited to this.
[0046] According to a second aspect of the present disclosure, a test system is provided, comprising the above-mentioned test fixture, and a temperature regulating module 7 connected to the test fixture, the temperature regulating module 7 being used to regulate the temperature of the heat exchange medium flowing through the heat exchange flow channel 3. In this way, the heat exchange medium can maintain an effective heat exchange capacity through the temperature regulating module 7, so that the force sensor 2 can be placed in a suitable working temperature range. For example, when inspecting the brake of a vehicle, the brake and the test fixture can be placed in a test temperature box, and the temperature in the test temperature box can be adjusted to conduct tests under different temperature conditions. The temperature adjustment range in the test temperature box is the working temperature range of the brake (for example, the above-mentioned -40°C to 120°C). At this time, the heat exchange medium is adjusted to heat exchange with the force sensor 2 so that the force sensor 2 is placed in a suitable working temperature range (for example, the above-mentioned -10°C to 70°C), so that the built-in force sensor of the brake of the vehicle can be calibrated, and the temperature of the heat exchange medium can be adjusted through the temperature regulating module 7 to ensure the heat exchange capacity of the heat exchange medium.
[0047] In some embodiments, reference Figure 6 The temperature regulating module 7 may include a temperature regulating unit 71, a liquid storage structure 72, a pumping device 73, a liquid inlet pipeline 74 and a liquid outlet pipeline 75. The liquid storage structure 72 is connected to the liquid inlet 32 of the heat exchange channel 3 through the liquid inlet pipeline 74, and the liquid storage structure 72 is connected to the liquid outlet 33 of the heat exchange channel 3 through the liquid outlet pipeline 75. The pumping device 73 is provided on the liquid inlet pipeline 74 and / or the liquid outlet pipeline 75. The temperature regulating unit 71 is used to regulate the temperature of the heat exchange medium in the liquid storage structure 72. In this way, under the action of the pumping device 73, the heat exchange medium can flow from the liquid storage structure 72 through the liquid inlet pipeline 74 and the liquid inlet 32 into the heat exchange channel 3. During the process of flowing in the heat exchange channel 3, the heat exchange medium directly or indirectly exchanges heat with the force sensor 2 to regulate the temperature, and then the heat exchange medium flows out of the heat exchange channel 3 through the liquid outlet 33. It can be understood that the heat exchange medium after heat exchange can flow back to the liquid storage structure 72 from the liquid outlet pipe 75, and the temperature of the heat exchange medium can be adjusted by the temperature adjustment unit 71 so that this part of the heat exchange medium can be heated up or cooled down to the required temperature, thereby improving the heat exchange capacity, so that the heat exchange effect can be repeatedly exerted, thereby reducing losses.
[0048] Wherein, in some embodiments, reference Figure 6The temperature regulating unit 71 may include a temperature box 711, and the liquid storage structure 72 is located in the temperature box 711, so that the temperature of the heat exchange medium placed in the liquid storage structure 72 can be regulated by adjusting the temperature inside the temperature box 711. In addition, in some other possible embodiments not shown in the drawings, the temperature regulating unit 71 may also include, for example, a cooling pipeline and a heating pipeline flowing through the liquid storage structure 72, so that the heat exchange medium in the liquid storage structure 72 can be cooled by the cooling medium flowing in the cooling pipeline, or the heat exchange medium in the liquid storage structure 72 can be heated by the heating medium in the heating pipeline. Alternatively, the temperature regulating unit 71 may also include, for example, a semiconductor refrigeration sheet disposed on the liquid storage structure 72 to achieve cooling of the heat exchange medium. In addition, the temperature regulating unit 71 may also include, for example, a heating resistor wire disposed on the liquid storage structure 72 to achieve heating of the heat exchange medium, but the present disclosure is not limited thereto.
[0049] In some embodiments, reference Figure 6 The temperature regulating module 7 may further include a controller 8, which is respectively connected to the pumping device 73, the temperature sensor 6 disposed on the substrate 1, and the temperature regulating unit 71 by signals. In this way, the temperature signal of the substrate 1 monitored by the temperature sensor 6 can be received by the controller 8, and then the controller 8 can send a signal to the temperature regulating unit 71 to adjust the temperature of the heat exchange medium in the liquid storage structure 72 to improve the heat exchange capacity of the heat exchange medium, and finally the heat exchange medium is transported to the heat exchange channel 3 via the pumping device 73 and the liquid inlet pipeline 74 to exchange heat with the force sensor 2. Among them, the controller 8 can be, for example, a PLC controller, a computer, etc., and the present disclosure does not specifically limit this.
[0050] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0051] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.
[0052] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.
Claims
1. A test tool, characterized in that: It comprises a substrate and a force sensor arranged on the substrate, wherein the force sensor is used to measure the force of a force-applying member applied to the substrate, and a heat exchange channel is arranged on the substrate, in which a heat exchange medium flows for heat exchange with the force sensor.
2. The test tool according to claim 1, characterized in that: The heat exchange channel at least partially extends in a curved shape.
3. The test tool according to claim 1, characterized in that: The heat exchange channel includes at least one liquid storage area.
4. The test tool according to any one of claims 1 to 3, characterized in that: The base includes a first plate and a second plate, the second plate is movable relative to the first plate so as to abut against the force sensor located between the first plate and the second plate, the heat exchange channel is formed on at least one of the first plate and the second plate, and / or the base also includes an intermediate piece located between the first plate and the second plate, the heat exchange channel is formed on the intermediate piece.
5. The test tool according to claim 4, characterized in that: The intermediate member is configured as an intermediate plate body, the force sensor is arranged on the first plate body and passes through the intermediate plate body toward the second plate body, or the force sensor is arranged on the intermediate plate body.
6. The test tool according to claim 5, characterized in that: The test fixture also includes a connecting piece, which includes a connecting rod and a limiting portion, one end of the connecting rod is connected to the middle plate body or the first plate body, the other end of the connecting rod passes through the second plate body and is connected to the limiting portion, the second plate body is movably arranged along the extension direction of the connecting rod, and the outer surface of the second plate body facing away from the middle plate body has a recessed groove for accommodating the limiting portion.
7. The test tool according to claim 1, characterized in that: The heat exchange flow channel has a liquid inlet and a liquid outlet, and both the liquid inlet and the liquid outlet are provided with openable and closable joints.
8. The test tool according to claim 1, characterized in that: A temperature sensor is arranged on the substrate.
9. A testing system, characterized in that: It comprises the test fixture as described in any one of claims 1 to 8, and a temperature regulating module connected to the test fixture, wherein the temperature regulating module is used to regulate the temperature of the heat exchange medium flowing through the heat exchange channel.
10. The test system according to claim 9, characterized in that: The temperature regulating module includes a temperature regulating unit, a liquid storage structure, a pumping device, a liquid inlet pipeline and a liquid outlet pipeline. The liquid storage structure is connected to the liquid inlet of the heat exchange channel through the liquid inlet pipeline, and the liquid storage structure is connected to the liquid outlet of the heat exchange channel through the liquid outlet pipeline. The pumping device is provided on the liquid inlet pipeline and / or the liquid outlet pipeline, and the temperature regulating unit is used to adjust the temperature of the heat exchange medium in the liquid storage structure.
11. The test system according to claim 10, characterized in that: The temperature regulating module comprises a controller, and the controller is respectively connected to the pumping device, the temperature sensor arranged on the substrate and the temperature regulating unit by signals.
12. The test system according to claim 10 or 11, characterized in that: The temperature regulating unit comprises a temperature box, and the liquid storage structure is located in the temperature box.