阅读说明：本技术 一种带补偿算法的测温系统 (Temperature measurement system with compensation algorithm ) 是由 魏伟 李斌 顾豪贝 杨亚东 王伟 于 2021-08-23 设计创作，主要内容包括：一种带补偿算法的测温系统,包括用于采集温度数据的热敏器件、与热敏器件通信连接的信号处理模块、与信号处理模块通信连接的运算模块,信号处理模块用于将热敏器件采集的温度数据转换为运算模块能够处理的数据,运算模块根据自身的拟合算法对数据进行补偿运算,从而得出接近真实温度的测量值。该系统可以将热敏器件等各种温度传感器集成在电路板上,使测温结构模块化,方便自动化装配,具备可更换性。由于使用电路板内层的导热铜层传导端子温度,有较高的热损耗,导致测温精度不准确,因而该系统采集不同条件下的实验测温数据后得出拟合算法,再通过拟合算法对实测的测量值进行校准补偿,得出最接近真实值的温度数值,提高测量精度。(The utility model provides a take temperature measurement system of compensation algorithm, is including the thermosensitive device that is used for gathering temperature data, with thermosensitive device communication connection's signal processing module, with signal processing module communication connection's operation module, the signal processing module is used for converting the temperature data that thermosensitive device gathered into the data that operation module can handle, and operation module carries out compensation operation to data according to the fitting algorithm of self to reacing the measured value of being close to true temperature. The system can integrate various temperature sensors such as thermosensitive devices and the like on a circuit board, so that the temperature measuring structure is modularized, convenient for automatic assembly and has replaceability. Because the temperature of the heat conduction copper layer conduction terminal of the inner layer of the circuit board is used, the temperature measurement precision is inaccurate due to high heat loss, so that the system acquires experimental temperature measurement data under different conditions to obtain a fitting algorithm, and then calibrates and compensates the measured value by the fitting algorithm to obtain a temperature value closest to a true value, thereby improving the measurement precision.)

1. The utility model provides a take temperature measurement system of compensation algorithm which characterized in that: the temperature measurement device comprises a thermosensitive device (3) for collecting temperature data, a signal processing module in communication connection with the thermosensitive device, and an operation module in communication connection with the signal processing module, wherein the signal processing module is used for converting the temperature data collected by the thermosensitive device into data capable of being processed by the operation module, and the operation module carries out compensation operation on the data according to a self fitting algorithm, so that a measured value close to the real temperature is obtained.

2. The temperature measurement system with compensation algorithm of claim 1, wherein: the thermosensitive device (3) is integrated on the insulating layer on the surface of the circuit board, the inner layer of the circuit board is provided with a heat conducting layer, and the heat conducting layer transfers heat emitted by a measured object to the position of the thermosensitive device.

3. The temperature measurement system with compensation algorithm of claim 2, wherein: the heat conduction layer is a heat conduction copper layer (1), and the insulating layer is an FR-4 insulating layer (2).

4. The temperature measurement system with compensation algorithm of claim 2, wherein: the measured object is a terminal, and the terminal is inserted on the circuit board.

5. The temperature measurement system with compensation algorithm of claim 4, wherein: the circuit board is provided with an insertion hole, the terminal is inserted in the insertion hole, and the inner wall of the insertion hole is in thermal conduction with the heat conduction layer.

6. The temperature measurement system with compensation algorithm of claim 1, wherein: the thermosensitive device (3) measures temperature by using resistance characteristics, and correspondingly, the signal processing module is set as a resistance network signal processing module (5) and is used for converting data acquired by the thermosensitive device (3) into voltage signals.

7. The temperature measurement system with compensation algorithm of claim 1, wherein: and calculating and fitting the fitting algorithm of the operation module according to the acquired experimental data.

8. The temperature measurement system with compensation algorithm of claim 7, wherein: the thermosensitive device (3) collects experimental temperature data under different temperature rising rate conditions and different current through-flow conditions, the experimental temperature data are processed and transmitted to the operation module, and the operation module substitutes the collected experimental temperature data into a formula F (x) = a_nxⁿ+a_n-1x^n-1+…a₁x¹And + b, wherein x is measured experimental temperature data, different experimental temperature data exist under different conditions of various terminals, and the equation is calculated according to the measured experimental temperature data, so that the fitting algorithm of the operation module is obtained.

Technical Field

The invention relates to the technical field of temperature measurement, in particular to a temperature measurement system with a compensation algorithm.

Background

The national standard GB/T18487.1-2015 describes that the rated charging current is larger than 16A, for example, a power supply socket, a vehicle socket and the like are provided with a temperature monitoring device, and power supply equipment and an electric automobile are provided with temperature detection and over-temperature protection functions.

The cartridge has a plurality of terminals on the circuit board of above-mentioned equipment, and the scheme of current detection terminal temperature is for directly pasting temperature sensor to the terminal wall on the temperature measurement, and this scheme does not possess the convertibility, and the structure is complicated, inconvenient installation and unable automated assembly to the error is great, is difficult to show terminal temperature at present in real time.

Disclosure of Invention

Aiming at the technical problem that the existing scheme is inconvenient to detect the temperature, the invention aims to provide a temperature measurement system with a compensation algorithm.

The purpose of the invention is realized by adopting the following technical scheme. The temperature measuring system with the compensation algorithm comprises a thermosensitive device for collecting temperature data, a signal processing module in communication connection with the thermosensitive device, and an operation module in communication connection with the signal processing module, wherein the signal processing module is used for converting the temperature data collected by the thermosensitive device into data capable of being processed by the operation module, and the operation module carries out compensation operation on the data according to a self-fitting algorithm, so that a measured value close to the real temperature is obtained.

Furthermore, the thermosensitive device is integrated on the insulating layer on the surface of the circuit board, the inner layer of the circuit board is provided with a heat conducting layer, and the heat conducting layer transfers heat emitted by the measured object to the position of the thermosensitive device.

Further, the heat conduction layer is a heat conduction copper layer, and the insulation layer is an FR-4 insulation layer.

Furthermore, the measured object is a terminal, and the terminal is inserted on the circuit board.

Furthermore, the circuit board is provided with an insertion hole, the terminal is inserted in the insertion hole, and the inner wall of the insertion hole is in thermal conduction with the heat conducting layer.

Further, the thermosensitive device measures temperature by using resistance characteristics, and correspondingly, the signal processing module is set as a resistance network signal processing module and is used for converting data acquired by the thermosensitive device into voltage signals.

Furthermore, the fitting algorithm of the operation module is obtained by calculation and fitting according to the collected experimental data.

Furthermore, the thermosensitive device collects experimental temperature data under different temperature rise rate conditions and different current through-flow conditions, the experimental temperature data are processed and transmitted to the operation module, and the operation module substitutes the collected experimental temperature data into a formula F (x) = a_nxⁿ+a_n-1x^n-1+…a₁x¹And + b, wherein x is measured experimental temperature data, different experimental temperature data exist under different conditions of various terminals, and the equation is calculated according to the measured experimental temperature data, so that the fitting algorithm of the operation module is obtained.

Compared with the prior art, the invention has the advantages that: the system can integrate various temperature sensors such as thermosensitive devices and the like on a circuit board, so that the temperature measuring structure is modularized, convenient for automatic assembly and has replaceability. Because the temperature of the heat conduction copper layer conduction terminal of the inner layer of the circuit board is used, the temperature measurement precision is inaccurate due to high heat loss, so that the system acquires experimental temperature measurement data under different conditions to obtain a fitting algorithm, and then calibrates and compensates the measured value through the fitting algorithm to obtain a temperature value closest to a true value, thereby improving the measurement precision and increasing the feasibility of the system.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of a partial structure of a circuit board in an embodiment of a temperature measurement system with a compensation algorithm according to the present invention;

FIG. 2 is a schematic block diagram of an embodiment of a temperature measurement system with compensation algorithm according to the present invention.

[ reference numerals ]

1-heat conduction copper layer, 2-FR-4 insulating layer, 3-thermosensitive device, 4-heat transmission direction, 5-resistance network signal processing module and 6-MCU.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

One embodiment of a thermometry system with compensation algorithm according to the present invention is shown in fig. 1-2. The system comprises thermosensitive devices 3, and the thermosensitive devices 3 are integrally mounted on a circuit board of the equipment. The inner layer of the circuit board is a heat conducting layer, the heat conducting layer is usually a heat conducting copper layer 1, the outer layer is an insulating layer, and the thermosensitive device is mounted on the insulating layer, in this embodiment, the insulating layer is an FR-4 insulating layer 2, and the thermosensitive device 3 is mounted on the FR-4 insulating layer 2. The circuit board is provided with a plurality of insertion holes for inserting a measured object, the measured object is usually a terminal, the inner wall of each insertion hole is made of copper, and the insertion holes are in thermal conduction with the heat conduction copper layer 1.

The thermosensitive device 3 is in communication connection with the signal processing module, and the signal processing module is in communication connection with the operation module. The thermosensitive device 3 can acquire temperature data of various terminals under different temperature rising rate conditions and different current through-flow conditions at any time. In this embodiment, the thermosensitive device 3 mainly measures the temperature by using the resistance characteristics of the thermosensitive device at different temperatures, so that the signal processing module adopts the resistance network signal processing module 5 for acquiring the temperature data signal sent by the thermosensitive device and converting the received temperature data signal into the temperature data signal which can be processed by the operation module. The operation module processes the measured temperature data signal according to a fitting algorithm stored in the operation module, and the operation module may be a post-stage operation unit or an MCU (micro control unit), in this embodiment, an MCU6 (micro control unit) is used.

In the use process of the circuit board, heat generated by the terminals is conducted through the insertion holes and the heat conducting copper layer 1, and the conduction direction is a heat transmission direction 4 shown in fig. 1. Heat is conducted to the heat sensitive device 3 through the FR-4 insulating layer 2 of the circuit board. The temperature data signals collected by the thermosensitive device 3 are processed by the resistance network signal processing module 5 and converted into voltage signals which can be processed by the MCU6, and the voltage signals correspond to the temperature data signals generated by the thermosensitive device 3 one by one. The temperature data signals output by the resistance network signal processing module 5 are transmitted to the MCU6, the MCU6 performs compensation operation on the temperature data according to a self-fitting algorithm, compensates temperature difference, obtains more accurate temperature measurement values, and improves the temperature measurement accuracy of the system in various environments.

The fitting algorithm of the MCU6 is calculated and fitted according to the collected experimental temperature data, and specifically comprises the following steps: experimental temperature data of various terminals under the conditions of different heating rates and different current through-flow are acquired through a thermosensitive device 3, the experimental temperature data are processed and transmitted to an MCU (microprogrammed control Unit), and the MCU substitutes the acquired experimental temperature data into a formula F (x) = a_nxⁿ+a_n-1x^n-1+…a₁x¹+ b, wherein x is the measured experimental data, different experimental temperature data exist at various terminals under different conditions, and the process is calculated according to a plurality of measured experimental temperature data, so that the fitting algorithm of the MCU is obtained. Because various terminals can be in different environments, the fitting algorithm has multiple equations, and in practical application, the MCU calculates more accurate measurement values according to the appropriate fitting algorithm according to specific conditions.

The system can integrate thermosensitive devices or other various temperature sensors for temperature measurement on a circuit board, so that the temperature measurement structure is modularized, convenient for automatic assembly and replaceable. Because the temperature of the heat conduction copper layer conduction terminal of the inner layer of the circuit board is used, the heat loss is high, and the temperature measurement precision is inaccurate, the system acquires temperature measurement data under different conditions to obtain a fitting algorithm, and then the measured value is calibrated and compensated through the fitting algorithm, so that the measurement precision is improved, and the feasibility of the system is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.