A receiver circuit used in temperature control system

Abstract

The invention discloses a receiving end circuit for a temperature control system. The receiving end circuit comprises a 433MHZ receiving tuning circuit, a 433MHZ detuning circuit, a central processing unit (CPU) control circuit and a digital display circuit, wherein the 433MHZ receiving tuning circuit is used for receiving a 433MHZ digital signal and transmitting the 433MHZ digital signal to the 433MHZ detuning circuit; the 433MHZ detuning circuit is used for detuning the digital signal and transmitting the digital signal to the CPU control circuit; the CPU control circuit is used for outputting a temperature value code to the data input end of the digital display circuit; the digital display circuit is used for displaying a temperature value. By the adoption of the receiving end circuit, the temperature detection accuracy is improved, labor resources and cost are saved, and various requirements in the practical application are met.

Description

technical field [0001] The invention relates to a thermometer, in particular to a receiving end circuit used in a temperature control system. Background technique [0002] With the development of national economic construction, there is an urgent need to realize the automatic management of these places, such as grain storage warehouses, civilian vegetable greenhouses, and civilian breeding bases. To realize automatic management, it is necessary to monitor the temperature automatically at multiple points. At present, many places are due to Difficult to do for technical and cost reasons. Although multi-point detection is also used for civilian use, including greenhouses and breeding bases, they all use manual monitoring of multiple points one by one, and record one by one, so that it is impossible to monitor multiple monitoring points at the same time from time to time. It is an alcohol thermometer, which has a certain delay time for the change of ambient temperature, which n...

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Problems solved by technology

[0002] With the development of national economic construction, there is an urgent need to realize the automatic management of these places, such as grain storage warehouses, civilian vegetable greenhouses, and civilian breeding bases. To realize automatic management, it is necessary to monitor the temperature automatically at multiple points. At present, many places are due to Difficult to do for technical and cost reasons

Although multi-point detection is also used for civilian use, including greenhouses and breeding bases, they all use manual monitoring of multiple points one by one, and record one by one, so that it is impossible to monitor multiple monitoring points at the same time from time to time. It is an alcohol thermometer, which has a certain delay time for the change of ambient temperature, which not only wastes manpower, time and effort, but also the effect is not good, because someone needs to enter the specific site to observe and record, so that one entry and one exit will affect the entire ecological environment. It has a great impact and is not conducive to the growth of plants, and such management cannot achieve overall automatic control, and a high-yield scientific management cannot be realized.

[0003] Due to the high cost of the receiving end circuit and the complicated use of the existing automatic temperature monitoring system, farmers cannot accept and operate it; in addition, although multi-point temperature monitoring is currently used for national grain storage, most of them use wired monitoring and monitoring equipment. Complicated, once the line is damaged, the monitoring will fail, and the circuit will be damaged due to the use of wired for a long time, which will not only increase the cost but also cause a short circuit and cause a fire

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