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High precision thermal resistance wireless temperature sensor based on wireless sensor network

A wireless sensor and wireless temperature technology, applied in thermometers, thermometers, wireless communication, etc. that use electric/magnetic components that are directly sensitive to heat, can solve problems such as difficult to achieve high-precision temperature measurement, and achieve improved reliability and consistency The effects of stability, convenience for mass production, and simplification of the circuit

Inactive Publication Date: 2011-12-21
陈瑞杰
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Problems solved by technology

[0003] At present, the temperature measurement method of platinum thermal resistance in the industrial field widely adopts the 3-wire or 4-wire wired measurement technology based on the unbalanced bridge, and the voltage signal that changes with the temperature is connected to the temperature transmitter through a long-distance wire or directly It is connected to the factory automation system, and various errors and interferences are inevitably introduced in the long-distance transmission and transmission of signals, so it is difficult for this platinum thermal resistance temperature measurement method to achieve high precision within 0.1 °C temperature measurement

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Embodiment Construction

[0015] The present invention will be further described below with reference to the drawings and embodiments, but it is not limited thereto.

[0016] figure 1 It is a block diagram of the composition principle of the high-precision thermal resistance wireless temperature sensor in the embodiment of the present invention. according to figure 1 As shown, the high-precision thermal resistance wireless temperature sensor of the present invention consists of a high-precision thermal resistance temperature detection unit (1), a weak signal detection circuit (2), a microcontroller circuit (3), a radio frequency transceiver circuit (4), and a power supply circuit. (5) Composition.

[0017] The above-mentioned high-precision thermal resistance temperature detection unit (1) typically can choose a platinum film temperature sensor with 1 / 3DIN B accuracy level or a thermistor temperature sensor with 0.1% accuracy level, which has high measurement accuracy, good stability and reliability The ...

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Abstract

The invention relates to a high-precision integrated thermal resistance wireless temperature sensor based on a wireless sensor network. The wireless temperature sensor is composed of a high-precision thermal resistance temperature detection unit, a weak signal detection circuit, a microcontroller circuit, a radio frequency transceiver circuit, and a power supply. The above-mentioned main circuit components are packaged in an integrated airtight casing to meet the waterproof, dustproof and anti-interference requirements of the industrial site. The system senses the temperature signal through the high-precision thermal resistance temperature detection unit, and sends and receives it through radio frequency. The circuit realizes the communication function with the wireless sensor network or other automatic system wirelessly.

Description

Technical field [0001] The invention relates to a wireless temperature sensor, in particular to a high-precision thermal resistance wireless temperature sensor based on a wireless sensor network. Background technique [0002] The platinum thermistor temperature sensor is a temperature sensor that uses the physical characteristic that the resistance value of metal platinum changes accordingly with the temperature. Because the platinum thermistor temperature measurement method has good consistency, repeatability and It is stable and has a wide temperature range, which can reach -200~650℃, so it is widely used in various industrial temperature measurement fields. [0003] At present, the temperature measurement method of platinum thermal resistance in the industrial field widely adopts 3-wire or 4-wire wired measurement technology based on unbalanced bridge, and the voltage signal that changes with temperature is connected to the temperature transmitter through a long-distance wire or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/18G01K7/22H04B1/40H04W52/02H04W56/00G08C17/02
CPCY02D30/70
Inventor 陈瑞杰
Owner 陈瑞杰
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