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Wireless humiture probe for cool chain

A technology of humidity probe and wireless temperature, which is applied in thermometers, parts of thermometers, thermometers with electric/magnetic elements that are directly sensitive to heat, etc., to achieve accurate temperature measurement, prevent heat generation, and measure accurately

Inactive Publication Date: 2017-07-04
苏州冷王网络科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a wireless temperature and humidity probe for cold chain, which measures temperature accurately and can effectively prevent product safety problems caused by inaccurate temperature detection

Method used

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  • Wireless humiture probe for cool chain
  • Wireless humiture probe for cool chain
  • Wireless humiture probe for cool chain

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 1 As shown, the resistance value of the thermistor varies nonlinearly with temperature, its resistance value gradually decreases as the temperature rises, and the resistance value gradually increases as the temperature decreases. The conventional test model is usually linear, as shown by L1 in the figure, which has a large error between the high temperature and low temperature and the actual temperature.

[0031] The wireless temperature and humidity probe of the present invention is as Figure 2-5 As shown, this embodiment provides a wireless temperature and humidity probe for cold chain, which includes a housing 1, the housing 1 is composed of an upper housing 2 and a lower housing 3, between the upper housing 2 and the lower housing 3 Fixed installation by screws and nuts, the outer surface of the upper housing 2 is fixedly equipped with an opening button 21, the opening button 21 is embedded in the button groove 22, the button groove 22 is a cylinder...

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Abstract

The invention discloses a wireless humiture probe for a cool chain. The wireless humiture probe includes a housing and a main control board which is arranged inside the housing and a power supply which supplies power to the main control board. The main control board is provided with a humiture measuring circuit, a processing unit and a wireless transmission module. The processing unit processes the data of the humiture measuring circuit and then transmits the data through the wireless transmission module. The humiture measuring circuit includes a thermosensitive resistor and a divider resistor. The divider resistor has a resistance of R. The thermosensitive resistor has a resistance of Rw at room temperature, wherein R is greater than or equal to 10Rw. Since the thermosensitive resistor has resistance increased along with the lowering of the temperature, the divider resistor is provided with a greater resistance with respect to the thermosensitive resistor at room temperature. When the measurement is within an allowable range, close to an upper limit, the divider resistor can share greater voltage, along with the lowering of the temperature, the divider resistor shares smaller voltage. Since the voltage fluctuates widely, measurement is more accurate. When R is greater than or equal to 10Rw, non-linear error brought by the thermosensitive resistor can be controlled within 0.1 DEG C.

Description

technical field [0001] The invention relates to the technical field of temperature measurement, in particular to a wireless temperature and humidity probe for a cold chain. Background technique [0002] The cold chain refers to certain food raw materials, processed food or semi-finished products, special biological products and pharmaceuticals after they are purchased, processed, sterilized and inactivated, during the process of product processing, storage, transportation, distribution, retail and use. , its various links are always in the specific low-temperature environment necessary for the product, reducing loss, preventing pollution and deterioration, and ensuring the special supply chain system of product food safety, biological safety, and drug safety. [0003] In order to ensure the temperature of the cold chain, monitoring equipment is usually installed in the cold chain equipment to monitor the temperature of the cold chain. Common temperature detection elements a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/22G01K1/08G01K1/024
CPCG01K1/08G01K7/22
Inventor 陈勇刘念
Owner 苏州冷王网络科技有限公司
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