Automatic calibration method based on thermistor temperature sensor acquisition device and system
A temperature sensor and acquisition equipment technology, applied in the direction of thermometers, thermometers, thermometer testing/calibration, etc. that use electric/magnetic elements that are directly sensitive to heat, can solve problems such as high cost and time-consuming
Active Publication Date: 2020-01-17
广州温芯云科技有限公司
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Problems solved by technology
In the production of a large number of acquisition equipment, it takes a lot of time to calibrate through the thermostat box, the ambient temperature for calibration is required to be stable, a large number of thermostat boxes are required for calibration, and the cost is high
[0004] 2. The traditional calibration method is to manually use tools to calculate and fit parameters after the thermistor temperature sensor acquisition equipment collects data, and then set the parameters to the temperature sensor acquisition equipment
[0005] 3. The number of traditional fitting parameters is fixed. When the law of the data to be fitted is complex, there is no way to achieve a good fit.
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[0079] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
[0080] Such as figure 1 As shown, the automatic calibration system based on thermistor temperature sensor acquisition equipment includes calibration control equipment and relay modules. Control the opening and closing of the relay module according to the instruction of the acquisition device.
[0081] Such as figure 2 As shown, the automatic calibration method based on thermistor temperature sensor acquisition equipment includes the following steps:
[0082] The first step is to use the data of the relationship between resistance value and temperature measured by the high-precision temperature sensor manufacturer, and take the data realRT of n temperature segments to form a sensor resistance value temperature correspondence table; the sensor resistance value temperatu...
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The present invention discloses an automatic calibration method based on a thermistor temperature sensor acquisition device. The method comprises the following steps: taking the data of n temperaturesections to form a sensor resistance value temperature corresponding table; using relay module(s) of n relays to connect n fixing resistors; a calibration control device controlling the relay module(s) to switch on the m-th relay to connect the corresponding m-th resistor according to the command of an acquisition device; the acquisition device acquiring the resistance value of the connected m-thresistor, and recording the acquisition resistance value of the acquired m-th resistor and the temperature corresponding to the m-th resistor; after the n resistors are acquired, acquiring the temperature sample RT corresponding to the resistance values to form an acquisition device resistance value temperature corresponding table; and the acquisition device sending the acquired sample RT to the calibration control device to calculate fitting parameter(s) and save, and completing the calibration. The ambient temperature requirement for calibration using the resistors is not high, the time is saved, and the cost is low.
Description
technical field [0001] The invention relates to the field of calibration of acquisition equipment, in particular to an automatic calibration method and system for acquisition equipment based on a thermistor temperature sensor. Background technique [0002] When producing thermistor temperature sensor acquisition equipment (hereinafter referred to as "acquisition equipment"), the accuracy of each acquisition equipment may be insufficient due to the insufficient accuracy of purchased electronic components. The current methods for calibrating acquisition equipment are: [0003] 1. The incubator calibration method, in order to save time and cost, uses relays to switch different fixed resistances to simulate the real environment where the temperature sensor is placed in the incubator. It consists of multiple temperature sensors and soaks the temperature sensors in multiple incubators. Calibration is carried out by collecting temperature sensors of different incubators respective...
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IPC IPC(8): G01K7/24G01K15/00
CPCG01K7/24G01K15/005
Inventor 林宇翔陈果
Owner 广州温芯云科技有限公司