Miniature temperature monitoring plate

Abstract

The invention aims to provide the miniature temperature monitoring board which is simple in circuit and high in portability, can be close to a measured object at a short distance, and is beneficial to improving the test accuracy. The temperature control board comprises a temperature control board body, a connector is arranged at the top of the temperature control board body, a temperature sensor is arranged at the bottom of the temperature control board body, the connector is connected with the temperature sensor, the connector comprises four sets of signal ends, and the four sets of signal ends comprise the power end, the ground wire end, the serial clock wire end and the serial data wire end. And an external testing machine is connected with the four groups of signal ends through an external adapter plate. The invention is applied to the technical field of temperature testing.

Description

Technical Field

[0001] The present invention is applied to the technical field of temperature testing, and particularly relates to a micro temperature monitoring board. Background Art

[0002] With the increasing miniaturization and complexity of electronic products, the monitoring accuracy of product performance is getting higher and higher, especially in terms of temperature monitoring. Abnormal changes in temperature may affect the performance and life of the product. Therefore, real-time and accurate temperature monitoring is essential in the product design and production process. In the battery protection board test project, it is necessary to calibrate the accuracy of the battery protection board temperature module and compare it with the ambient temperature. When the external sensor gradually approaches the position of the product NTC resistor, the calibrated accuracy will be higher. Most of the existing technologies place NTC sensing resistors close to the machine position and convert the collected resistance value into real-time temperature. However, since the NTC sensing resistor is far away from the temperature module of the product to be tested, the test accuracy is not high, and the NTC sensing resistor is not integrated on the board, the portability is poor and the use is not flexible enough. Therefore, it is necessary to provide a miniature temperature monitoring board with a simple circuit, strong portability, and the ability to be close to the object to be tested, which is conducive to improving the test accuracy. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a micro temperature monitoring board with a simple circuit, strong portability, and the ability to be placed close to a measured object, thereby facilitating improved test accuracy.

[0004] The technical solution adopted by the present invention is: the present invention includes a temperature control board, a connector is provided on the top of the temperature control board, a temperature sensor is provided on the bottom of the temperature control board, the connector is connected to the temperature sensor, the connector includes four groups of signal terminals, the four groups of signal terminals include a power terminal, a ground terminal, a serial clock line terminal and a serial data line terminal, and an external test machine is connected to the four groups of signal terminals via an external adapter board.

[0005] It can be seen from the above scheme that this application has the following advantages: (1) Compatibility and portability: Currently, it is used in the battery protection board test project and can also be used in other temperature detection related projects; (2) Low cost, integrated on a small board, easy to transplant to different product test fixtures, and can be mass-produced; (3) Miniaturized design: The miniaturization of the small board allows it to be placed close to the product for accurate temperature measurement, and can be close to the object being measured, improving test accuracy; (4) The circuit is simple and is not affected by the heat of other components. The independent small board is easy to add to other test fixtures. It is small and portable. It can be used at a long distance. The actual application has verified that the stability and applicability are good. It has been introduced and used in the whole line. (4) Remote power supply and signal transmission: The equipment should have the ability to provide stable power supply and signal transmission within a certain distance (such as 3 meters) to adapt to different application scenarios.

[0006] A preferred solution is that a filter circuit is provided on the top of the temperature control board, the filter circuit is connected to the temperature sensor, and the filter circuit includes a plurality of capacitors and resistors.

[0007] A preferred solution is that the size of the temperature control plate is 14mm x 12mm x 1.6mm.

[0008] A preferred solution is that the V+ terminal of the temperature sensor is connected to the power terminal, the GND terminal of the temperature sensor is connected to the ground terminal, the SCL terminal of the temperature sensor is connected to the serial clock line terminal, and the SDA terminal of the temperature sensor is connected to the serial data line terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a three-dimensional structural diagram of the present invention; Figure 2 It is a three-dimensional structural diagram of the present invention from another angle; Figure 3 is a circuit schematic diagram of the temperature sensor; Figure 4 is a position relationship diagram between the temperature control board and the product to be tested; Figure 5 is a circuit schematic diagram of the connector; Figure 6 It is a schematic diagram of power supply and signal transmission of the present invention; Figure 7 It is a system block diagram of the present invention. DETAILED DESCRIPTION

[0010] like Figure 1 and Figure 7 As shown, in this embodiment, the present invention includes a temperature control board 1, a connector J1 is provided on the top of the temperature control board 1, a temperature sensor U2 is provided on the bottom of the temperature control board 1, the connector J1 is connected to the temperature sensor U2, the connector J1 includes four groups of signal terminals, the four groups of signal terminals include a power terminal PP3V3, a ground terminal GND, a serial clock line terminal BMU_I2C_SCL2 and a serial data line terminal BMU_I2C_SDA2, and an external test machine is connected to the four groups of signal terminals via an external adapter board.

[0011] The model of the temperature sensor U2 is TMP117NAIDRVR, and its test range is wide, covering the temperature range from –55°C to +150°C. In the common temperature range of –20°C to 50°C, the temperature IC can provide a measurement accuracy of up to ±0.1°C. The external adapter board is connected to the temperature control board 1 through a custom line. The temperature sensor U2 is physically separated from other electronic components, ensuring that only the temperature sensor U2 is close to the product under test during monitoring, such as Figure 4 As shown, when the temperature control plate 1 is pressed down to the shortest distance by the external driving mechanism, the distance from the product can be accurate to 1mm, and this distance can be flexibly adjusted according to the specific test vehicle. At present, the fixture using the temperature control plate 1 has achieved accurate measurement of the minimum distance from the product of 1mm. The compatibility and portability of the present application solution are extremely high. Figure 5 As shown in the schematic diagram, it can be quickly put into use by connecting only four basic signals: 3V3 power supply, ground (GND), serial clock line (SCL) and serial data line (SDA). The power supply and signal transmission capabilities of this solution are extremely excellent. Figure 6 In practical applications, the cable length of cable A plus cable B can be extended to 3 meters, which greatly expands the application scope and flexibility of the temperature control board 1. This feature makes the application suitable for temperature control scenarios that require remote monitoring or are deployed in complex environments. Figure 7 As shown, the temperature board of this solution is independently placed close to the product, has strong portability and can be used with random upgrades, which can reduce design costs.

[0012] like Figure 1 and Figure 2 As shown, in this embodiment, a filter circuit is provided on the top of the temperature control board 1, the filter circuit is connected to the temperature sensor U2, and the filter circuit includes a plurality of capacitors and resistors. The filter circuit can prevent signal interference and improve signal stability.

[0013] like Figure 1 and Figure 2 As shown, in this embodiment, the size of the temperature control board 1 is 14mm x 12mm x 1.6mm. The volume is as small as the thumb nail, and the structure is compact and the design is simple and efficient.

[0014] like Figure 1 and Figure 2As shown, in this embodiment, the V+ terminal of the temperature sensor U2 is connected to the power supply terminal PP3V3, the GND terminal of the temperature sensor U2 is connected to the ground terminal GND, the SCL terminal of the temperature sensor U2 is connected to the serial clock line terminal BMU_I2C_SCL2, and the SDA terminal of the temperature sensor U2 is connected to the serial data line terminal BMU_I2C_SDA2.

[0015] Although the embodiments of the present invention are described with practical solutions, they do not constitute limitations on the meaning of the present invention. For those skilled in the art, it is obvious to modify the implementation scheme and combine it with other solutions based on this description.

Claims

1. A micro temperature monitoring board, characterized in that: It comprises a temperature control board (1), a connector (J1) is arranged on the top of the temperature control board (1), a temperature sensor (U2) is arranged on the bottom of the temperature control board (1), the connector (J1) is connected to the temperature sensor (U2), the connector (J1) comprises four groups of signal terminals, the four groups of signal terminals comprise a power terminal (PP3V3), a ground terminal (GND), a serial clock line terminal (BMU_I2C_SCL2) and a serial data line terminal (BMU_I2C_SDA2), and an external test machine is connected to the four groups of signal terminals via an external adapter board.

2. A micro temperature monitoring board according to claim 1, characterized in that: A filter circuit is provided on the top of the temperature control board (1), the filter circuit is connected to the temperature sensor (U2), and the filter circuit comprises a plurality of capacitors and resistors.

3. A micro temperature monitoring board according to claim 1, characterized in that: The dimensions of the temperature control plate (1) are 14 mm x 12 mm x 1.6 mm.

4. A micro temperature monitoring board according to claim 1, characterized in that: The V+ terminal of the temperature sensor (U2) is connected to the power terminal (PP3V3), the GND terminal of the temperature sensor (U2) is connected to the ground terminal (GND), the SCL terminal of the temperature sensor (U2) is connected to the serial clock line terminal (BMU_I2C_SCL2), and the SDA terminal of the temperature sensor (U2) is connected to the serial data line terminal (BMU_I2C_SDA2).

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