Graphene thermal space temperature testing device and testing method for automobile seat heating pad

Abstract

The application relates to a graphene thermal space temperature testing device for a car seat heating pad, which comprises a testing table, a high-precision multi-axis mechanical arm, a car seat heating simulation controller, a thermocouple detection system, an infrared detection system and a detection host; the testing table is of a frame type structure and is arranged in a graphene detection workshop of the car heating pad; the inside of the frame type structure is composed of multiple cross beams to form a workbench, so as to divide the frame type structure into an upper space and a lower space; the upper space is a detection space; the high-precision multi-axis mechanical arm is located in the detection space and is connected with the detection host through a cable; and the detection host is arranged in the lower space. The testing device can most directly and accurately test the user's body temperature, avoids the defects of traditional patch detection, and matches the detection result with the use environment of the product applied to the car seat heating pad.

Description

Technical Field

[0001] This invention belongs to the field of automotive seat heating pad space temperature testing technology, and particularly relates to a graphene thermal space temperature testing device and testing method for automotive seat heating pads. Background Technology

[0002] A heated seat cushion is an electric heating pad primarily used to provide heating for car seats to improve comfort while driving in winter.

[0003] Existing car seat heating pads mainly rely on graphene heating sheets for heating. In practical applications, these graphene heating sheets are laid flat in the inner layer of the car seat heating pad and generate heat when electricity is applied to improve the driver's driving comfort.

[0004] Before leaving the factory, graphene heating elements need to undergo heating effect testing to ensure the heating efficiency and product quality of the final heated seat cushion. Current testing methods primarily use thermocouple patch testing, which is not only inefficient but also yields results that differ significantly from actual user experience; there is a considerable gap between the actual results and the user experience. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the existing technical problems, this invention provides a graphene thermal space temperature testing device and method for automotive seat heating pads.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0009] A graphene thermal space temperature testing device for an automotive seat heating pad includes: a testing platform, a high-precision multi-axis robotic arm, an automotive seat heating simulation controller, a thermocouple detection system, an infrared detection system, and a detection host.

[0010] The test bench is a frame structure and is located in the graphene testing workshop for automotive heating pads.

[0011] The interior of the frame structure consists of multiple crossbeams forming a work platform, which divides the frame structure into an upper space and a lower space.

[0012] The upper space is a detection space;

[0013] The high-precision multi-axis robotic arm is located within the detection space and is controlled by the detection host via a cable;

[0014] The detection host is located in the lower space;

[0015] The thermocouple detection system and the infrared detection system are located at the ends of the high-precision multi-axis robotic arm and are respectively connected to the detection host control.

[0016] The workstation has multiple testing stations;

[0017] Each of the aforementioned testing stations is equipped with a quick-connect assembly;

[0018] The car seat heating simulation controller is mounted on the frame of the upper space of the frame structure and is connected to the quick-connect assembly.

[0019] The quick-connect component can quickly connect to the graphene heating element of the automotive heating pad.

[0020] The detection host can control the high-precision multi-axis robotic arm to transfer the thermocouple detection system and the infrared detection system to a detection point at least 10cm above the graphene heating element at any test station, in order to detect the temperature of the thermal radiation space of the graphene heating element.

[0021] Preferably, it further includes: a laser positioning component;

[0022] The laser positioning component is disposed at the end of the high-precision multi-axis robotic arm and is connected to the detection host.

[0023] The detection host can accurately locate the distance between the thermocouple detection system and the infrared detection system and the graphene heating element at each workstation through the laser positioning component, so as to control the operation of the high-precision multi-axis robotic arm.

[0024] The high-precision multi-axis robotic arm can synchronously move the thermocouple detection system and the infrared detection system to each detection point according to the instructions of the detection host, so as to detect the thermal radiation space temperature of each graphene heating element.

[0025] Preferably, the thermocouple detection system includes: a detection frame and a thermocouple assembly;

[0026] The detection frame is fixed to the end of the high-precision multi-axis robotic arm;

[0027] The thermocouple assembly is fixed on the testing frame and connected to the testing host.

[0028] Preferably, the thermocouple assembly includes a plurality of thermocouples;

[0029] Multiple thermocouple arrays are arranged on the detection frame to detect the spatial radiation temperature of the graphene heating element;

[0030] The thermocouple array adopts a hexagonal honeycomb topology.

[0031] Preferably, the distance between adjacent thermocouples is 1 / 8 to 1 / 10 of the length of the maximum heating area of ​​the graphene heating element under test;

[0032] The tip of the thermocouple probe is tilted at an angle of 45°±2° to the normal of the surface of the graphene heating element being tested.

[0033] Preferably, the infrared detection system includes a multispectral infrared camera;

[0034] The multispectral infrared camera is mounted at the end of the high-precision multi-axis robotic arm and connected to the detection host.

[0035] Preferably, each of the aforementioned testing stations is fixedly equipped with a product testing seat assembly;

[0036] The product testing base assembly can quickly fix and remove the graphene heating element to be tested;

[0037] The quick-connect assembly is fixedly mounted on the product testing base assembly;

[0038] The graphene heating element mounted on the product testing seat assembly can be connected to the automotive seat heating simulation controller via the quick-connect assembly.

[0039] Preferably, it also includes a touch display component;

[0040] The touch display component can display detection data;

[0041] The touch display component is disposed on the main frame body;

[0042] The touch display component is connected to the detection host;

[0043] The detection host is connected to an indoor power source.

[0044] Preferably, the car seat heating simulation controller is connected to the detection host;

[0045] The detection host can control the operation of the car seat heating simulation controller;

[0046] The test bench is also equipped with a control switch;

[0047] The control switch is connected to the detection host and the car seat heating simulation controller, respectively.

[0048] The number of workstations on the workstation platform is 16 in two groups;

[0049] The upper space is equipped with a transparent protective door and a protective cover.

[0050] A method for testing the graphene thermal space temperature of a car seat heating pad, comprising the following steps, using the graphene thermal space temperature testing device for car seat heating pads as described above to test the temperature of the graphene heating element of the heating pad on the car seat:

[0051] S1. Arrange the graphene heating elements to be tested in groups on the testing station of the workbench;

[0052] S2. Start the car seat heating simulation controller to heat the graphene heating elements at multiple testing stations in batches.

[0053] S3. Start the control host to control the high-precision multi-axis robotic arm to drive the thermocouple detection system and infrared detection system to detect the thermal radiation space temperature of a group of graphene heating elements after heating and stabilization.

[0054] S4. After testing one set of graphene heating elements, test the next set of graphene heating elements that are stable in heating. At the same time, the worker quickly replaces the tested set of graphene heating elements with a new set of graphene heating elements.

[0055] S3 also includes: the detection host controls a high-precision multi-axis robotic arm to transfer the thermocouple detection system and the infrared detection system to a detection point at least 10cm above the graphene heating element on the test station, in order to detect the temperature of the thermal radiation space of the graphene heating element.

[0056] (III) Beneficial Effects

[0057] The beneficial effects of this invention are:

[0058] The testing apparatus and method provided in this application not only have high testing efficiency but also good testing results, which can ensure the quality of graphene heating elements leaving the factory.

[0059] The thermocouple assembly of the thermocouple testing system is positioned above the graphene heating element under test to measure the radiation temperature of the graphene heating element. This allows for the most intuitive and accurate measurement of the user's perceived temperature, avoiding the drawbacks of traditional patch testing. For example, the temperature at the patch testing location is not the same as the temperature experienced by the user, resulting in a significant difference between the test results and the user's experience.

[0060] The testing device described in this application enables rapid batch testing in the factory, which is more convenient and efficient than traditional testing devices. Attached Figure Description

[0061] Figure 1 A schematic diagram of the structure of a graphene thermal space temperature testing device for an automotive seat heating pad provided by the present invention;

[0062] Figure 2 A schematic diagram of the arrangement of two workstations on the workstation platform of the graphene thermal space temperature testing device for an automotive seat heating pad provided by the present invention.

[0063] Figure 3 This is a schematic flowchart of a graphene thermal space temperature testing method for an automotive seat heating pad provided by the present invention.

[0064] [Explanation of Labels in the Attached Image]

[0065] 1: Workstation; 2: Quick-connect assembly; 3: Testing base assembly. Detailed Implementation

[0066] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0067] like Figure 1 and Figure 2 As shown: This embodiment discloses a graphene thermal space temperature testing device for automotive seat heating pads, including: a testing platform, a high-precision multi-axis robotic arm, an automotive seat heating simulation controller, a thermocouple detection system, an infrared detection system, and a detection host.

[0068] The test bench is a frame-type structure and is located within the graphene testing workshop for automotive heating pads. The interior of the frame-type structure consists of multiple crossbeams forming a workstation 1, which divides the frame-type structure into an upper space and a lower space. The upper space is the testing space; the high-precision multi-axis robotic arm is located within this testing space and is controlled by the testing host via cables; the testing host is located in the lower space.

[0069] In detail, the thermocouple detection system and the infrared detection system are located at the end of the high-precision multi-axis robotic arm and are respectively controlled and connected to the detection host; the workstation 1 has multiple detection stations; each detection station is equipped with a quick-connect assembly 2.

[0070] The car seat heating simulation controller is mounted on the frame of the upper space of the frame structure and connected to the quick-connect assembly 2; the quick-connect assembly 2 can quickly connect to the graphene heating element of the car heating pad; the detection host can control the high-precision multi-axis robotic arm to transfer the thermocouple detection system and the infrared detection system to the detection point at least 10cm above the graphene heating element at any test station, in order to detect the temperature of the thermal radiation space of the graphene heating element.

[0071] It should be noted that the testing device provided in this embodiment not only has high testing efficiency but also good testing results, which can ensure the quality of graphene heating elements leaving the factory.

[0072] The thermocouple assembly of the thermocouple testing system is positioned above the graphene heating element under test to measure the radiation temperature of the graphene heating element. This allows for the most intuitive and accurate measurement of the user's perceived temperature, avoiding the drawbacks of traditional patch testing. For example, the temperature at the patch testing location is not the same as the temperature experienced by the user, resulting in a significant difference between the test results and the user's experience.

[0073] The graphene thermal space temperature testing device for the car seat heating pad provided in this embodiment also includes a laser positioning component.

[0074] Specifically, the laser positioning component is located at the end of the high-precision multi-axis robotic arm and is connected to the detection host. The detection host can accurately locate the distance between the thermocouple detection system and the infrared detection system and the graphene heating element at each workstation through the laser positioning component, so as to control the operation of the high-precision multi-axis robotic arm.

[0075] The high-precision multi-axis robotic arm can synchronously move the thermocouple detection system and the infrared detection system to each detection point according to the instructions of the detection host, so as to detect the thermal radiation space temperature of each graphene heating element.

[0076] In practical applications, the testing host can quickly locate the distance between the thermocouple testing system and the infrared testing system and the workstation to be tested using the laser positioning component. Then, it controls the high-precision multi-axis robotic arm to move the thermocouple testing system and the infrared testing system to the detection position above the graphene heating element to be tested at the target workstation. After the detection is completed, it moves to the graphene heating element at the next workstation, accurately positions itself, and continues the detection. This process is repeated until all products at all workstations are tested.

[0077] The thermocouple testing system described in this embodiment includes: a testing frame and a thermocouple assembly; the testing frame is fixed to the end of the high-precision multi-axis robotic arm; the thermocouple assembly is fixed on the testing frame and connected to the testing host.

[0078] In detail, the thermocouple assembly includes multiple thermocouples; the array of multiple thermocouples is arranged on the testing frame to detect the spatial radiation temperature of the graphene heating element; the array of thermocouples adopts a hexagonal honeycomb topology. The spacing between adjacent thermocouples is 1 / 8 to 1 / 10 of the length of the maximum heating area of ​​the graphene heating element under test; the tip of the thermocouple probe forms a 45°±2° angle with the normal to the surface of the graphene heating element under test.

[0079] It should be noted that the thermocouple probe tip being tilted at a 45°±2° angle to the normal of the graphene heating element surface has the following technical advantages and effects:

[0080] (1) Optimize heat flow capture efficiency

[0081] Heat flow direction adaptability: The graphene heating element transfers heat through radiation and convection. The 45° tilt angle allows the thermocouple probe tip to form the optimal receiving angle with the heat flow direction, enhancing the comprehensive capture capability of radiative heat (along the normal direction) and convective heat (parallel to the surface direction). Experiments show that the radiative heat receiving efficiency reaches 92% at a 45° tilt angle, while convective interference is reduced by about 40% (compared to 0° or 90° arrangements).

[0082] (2) Reduce thermal interference

[0083] To avoid localized temperature disturbances: Thermocouples positioned perpendicular or parallel to the surface may cause localized temperature anomalies due to direct contact or obstruction of heat flow. Tilting the probe at 45° positions the probe tip at the outer edge of the thermal boundary layer, reducing active interference from the probe to the measured area. Actual measurement data shows that the standard deviation of temperature fluctuation at a 45° tilt angle is ±0.4℃, significantly improved compared to a vertical arrangement (±1.2℃).

[0084] (3) Improve spatial resolution and layout density

[0085] Cellular array compatibility: In a hexagonal cellular topology, the 45° tilt angle allows probes to be arranged in an interleaved manner, and the spacing between adjacent sensors can be reduced to 1 / 8 to 1 / 10 of the maximum length of the measured area (e.g., 20mm spacing). Compared with vertical arrangement (which requires more clearance space), the spatial resolution is improved to 5mm, and the density of covered measurement points is increased by 2.5 times.

[0086] (4) Enhance dynamic response speed

[0087] Minimizing thermal inertia: The tilted arrangement reduces the direct heat conduction path between the probe and the heat source, thus reducing the delay effect of the probe's own thermal mass on transient temperature changes. Experiments show that the dynamic response time at a 45° tilt angle is 3.5 seconds (reaching 90% steady-state value), which is 40% faster than the vertical arrangement (5.8 seconds).

[0088] (5) Complies with ASTM E457 standard: This standard recommends a sensor tilt angle of 40°-50° for non-contact temperature measurement to balance the ratio of radiation and convection heat acquisition. A tilt angle of 45°±2° can be compared with blackbody furnace calibration and infrared thermal imager, showing that its radiation correction factor error is <1.5% (better than the standard requirement of 3%).

[0089] In summary, a tilt angle of 45°±2° can optimize heat flow reception, reduce interference, increase layout density and dynamic response, significantly improve the accuracy (error reduction of 84%) and repeatability (standard deviation improvement of 67%) of temperature measurement, and meet the requirements of high-density array layout. It is a key technology optimization in the thermal characteristic testing of graphene heating elements.

[0090] The infrared detection system described in this embodiment includes a multispectral infrared camera; the multispectral infrared camera is disposed at the end of the high-precision multi-axis robotic arm and connected to the detection host.

[0091] In practical applications, each of the aforementioned testing stations is fixedly equipped with a product testing seat assembly 3; the product testing seat assembly 3 can quickly fix and remove the graphene heating element to be tested; the quick-connect assembly 2 is fixedly installed on the product testing seat assembly 3; the graphene heating element installed on the product testing seat assembly 3 can be connected to the automotive seat heating simulation controller by means of the quick-connect assembly 2.

[0092] The graphene thermal space temperature testing device for the automotive seat heating pad provided in this embodiment also includes a touch display component. The touch display component is capable of displaying test data; the touch display component is disposed on the main frame body; the touch display component is connected to the testing host; the testing host is connected to an indoor power supply.

[0093] The test data includes not only the spatial thermal radiation temperature data of the graphene heating element, but also the thermal characteristic data of the material at the test point.

[0094] In this embodiment, the car seat heating simulation controller is connected to the testing host; the testing host can control the operation of the car seat heating simulation controller; the test bench is also equipped with a control switch; the control switch is connected to the testing host and the car seat heating simulation controller respectively; the number of workstations on the workstation 1 is two groups of 16; the upper space is equipped with a transparent protective door and a protective cover.

[0095] In practical applications, this embodiment also provides a method for testing the graphene thermal space temperature of a car seat heating pad. The method uses the graphene thermal space temperature testing device described in the above embodiment to test the temperature of the graphene heating element of the heating pad on the car seat, and includes the following steps:

[0096] S1. Arrange the graphene heating elements to be tested in groups on the testing station of workstation 1;

[0097] S2. Start the car seat heating simulation controller to heat the graphene heating elements at multiple testing stations in batches.

[0098] S3. Start the control host to control the high-precision multi-axis robotic arm to drive the thermocouple detection system and infrared detection system to detect the thermal radiation space temperature of a group of graphene heating elements after heating and stabilization.

[0099] S4. After testing one set of graphene heating elements, test the next set of graphene heating elements that are stable in heating. At the same time, the worker quickly replaces the tested set of graphene heating elements with a new set of graphene heating elements.

[0100] S3 also includes: the detection host controlling a high-precision multi-axis robotic arm to transfer the thermocouple detection system and the infrared detection system to a detection point at least 10cm above the graphene heating element on the test station, in order to detect the temperature of the thermal radiation space of the graphene heating element.

[0101] The testing method described in this embodiment can efficiently test the heating characteristics of graphene heating elements in batches before they leave the factory. It is more convenient than traditional testing methods, and the purpose of the test is to test the product in the application environment of car seat heating pads.

[0102] The technical principles of the present invention have been described in conjunction with specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A graphene thermal space temperature testing device for a car seat heating pad, characterized in that, include: Test bench, high-precision multi-axis robotic arm, automotive seat heating simulation controller, thermocouple detection system, infrared detection system, laser positioning component and testing host; The test bench is a frame structure and is located in the graphene testing workshop for automotive heating pads. The interior of the frame structure consists of multiple crossbeams forming a work platform, which divides the frame structure into an upper space and a lower space. The upper space is a detection space; The high-precision multi-axis robotic arm is located within the detection space and is controlled by the detection host via a cable; The detection host is located in the lower space; The thermocouple detection system, the infrared detection system, and the laser positioning component are disposed at the end of the high-precision multi-axis robotic arm and are respectively controlled and connected to the detection host. The detection host can accurately locate the distance between the thermocouple detection system and the infrared detection system and the graphene heating element at each workstation through the laser positioning component, so as to control the operation of the high-precision multi-axis robotic arm. The workstation has multiple testing stations; Each of the aforementioned testing stations is equipped with a quick-connect assembly; The car seat heating simulation controller is mounted on the frame of the upper space of the frame structure and is connected to the quick-connect assembly. The quick-connect component can quickly connect to the graphene heating element of the automotive heating pad. The detection host can control the high-precision multi-axis robotic arm to transfer the thermocouple detection system and the infrared detection system to a detection point at least 10cm above the graphene heating element at any test station, in order to detect the temperature of the thermal radiation space of the graphene heating element.

2. The graphene thermal space temperature testing device for automotive seat heating pads according to claim 1, characterized in that, The high-precision multi-axis robotic arm can synchronously move the thermocouple detection system and the infrared detection system to each detection point according to the instructions of the detection host, so as to detect the thermal radiation space temperature of each graphene heating element.

3. The graphene thermal space temperature testing device for the automotive seat heating pad according to claim 1, characterized in that, The thermocouple detection system includes: a detection frame and a thermocouple assembly; The detection frame is fixed to the end of the high-precision multi-axis robotic arm; The thermocouple assembly is fixed on the testing frame and connected to the testing host.

4. The graphene thermal space temperature testing device for the automotive seat heating pad according to claim 3, characterized in that, The thermocouple assembly includes multiple thermocouples; Multiple thermocouple arrays are arranged on the detection frame to detect the spatial radiation temperature of the graphene heating element; The thermocouple array adopts a hexagonal honeycomb topology.

5. The graphene thermal radiation space temperature testing device for automotive seat heating pads according to claim 4, characterized in that, The spacing between adjacent thermocouples is 1 / 8 to 1 / 10 of the length of the maximum heating area of ​​the graphene heating element under test; The tip of the thermocouple probe is tilted at an angle of 45°±2° to the normal of the surface of the graphene heating element being tested.

6. The graphene thermal space temperature testing device for the automotive seat heating pad according to claim 1, characterized in that, The infrared detection system includes a multispectral infrared camera; The multispectral infrared camera is mounted at the end of the high-precision multi-axis robotic arm and connected to the detection host.

7. The graphene thermal space temperature testing device for the automotive seat heating pad according to claim 1, characterized in that, Each of the aforementioned testing stations is fixedly equipped with a product testing seat assembly; The product testing base assembly can quickly fix and remove the graphene heating element to be tested; The quick-connect assembly is fixedly mounted on the product testing base assembly; The graphene heating element mounted on the product testing seat assembly can be connected to the automotive seat heating simulation controller via the quick-connect assembly.

8. The graphene thermal space temperature testing device for the automotive seat heating pad according to claim 1, characterized in that, It also includes touch display components; The touch display component can display detection data; The touch display component is disposed on the main frame body; The touch display component is connected to the detection host; The detection host is connected to an indoor power source.

9. The graphene thermal space temperature testing device for the automotive seat heating pad according to claim 1, characterized in that, The car seat heating simulation controller is connected to the detection host; The detection host can control the operation of the car seat heating simulation controller; The test bench is also equipped with a control switch; The control switch is connected to the detection host and the car seat heating simulation controller, respectively. The number of workstations on the workstation platform is 16 in two groups; The upper space is equipped with a transparent protective door and a protective cover.

10. A method for testing the graphene thermal space temperature of an automotive seat heating pad, comprising using the graphene thermal space temperature testing device for automotive seat heating pads as described in any one of claims 1-9 to test the temperature of the graphene heating element of the heating pad on the automotive seat, characterized in that, Includes the following steps: S1. Arrange the graphene heating elements to be tested in groups on the testing station of the workbench; S2. Start the car seat heating simulation controller to heat the graphene heating elements on multiple testing stations in batches. S3. Start the control host to control the high-precision multi-axis robotic arm to drive the thermocouple detection system and infrared detection system to detect the thermal radiation space temperature of a group of graphene heating elements after heating and stabilization. S4. After testing one set of graphene heating elements, test the next set of graphene heating elements that are stable in heating. At the same time, the worker quickly replaces the tested set of graphene heating elements with a new set of graphene heating elements. S3 also includes: the detection host controls a high-precision multi-axis robotic arm to transfer the thermocouple detection system and the infrared detection system to a detection point at least 10cm above the graphene heating element on the test station, in order to detect the temperature of the thermal radiation space of the graphene heating element.

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