Internet of Things signal state indicating circuit of Internet of Things home appliance

Abstract

The invention discloses an Internet of Things signal state indicating circuit of an Internet of Things home appliance. The Internet of Things signal state indicating circuit comprises a frequency collection circuit, a frequency modulation loop, a comparison and amplification circuit and an indicating circuit, the frequency collection circuit collects the frequency of an Internet of Things signal when the Internet of Things of the Internet of Things home appliance is used, the frequency modulation loop performs composite circuit frequency selection on a frequency signal by using triodes Q1, Q2,a capacitor C3 and an adjustable resistor R5, the size of level of an output signal of the frequency modulation loop can be adjusted by adjusting the resistance of the adjustable resistor R5, the output signal of the frequency modulation loop is separately input to an in-phase input end and an inverting input end of an operational amplifier AR3 by the comparison and amplification circuit by usingoperational amplifiers AR1 and AR2 for comparison and amplification, the output signal of the comparison and amplification circuit is used as a driving signal of the indicating circuit to control thelevel-by-level conduction of triodes Q3 and Q4, when the Internet of Things function of the Internet of Things home appliance is used, the condition of the Internet of Things signal is judged throughthe number of turned on indicator lamps LED1 to LED3, and the effect of detecting the Internet of Things function of the Internet of Things home appliance in real time is achieved.

Description

technical field [0001] The present invention relates to the technical field of signal state indication circuit of the Internet of Things, in particular to the signal state indication circuit of the Internet of Things for home appliances of the Internet of Things. Background technique [0002] With the advancement of science and technology, home appliances of the Internet of Things have gradually entered people's lives. Based on the Internet of Things, the topology structure is extended to control corresponding home appliances, such as indoor lights, refrigerators, TVs, and air conditioners. The composition is based on the Internet of Things. The smart home system has greatly improved people's quality of life. If the Internet of Things signal is abnormal, home appliances will not be controlled, which will bring great changes to people's lives, and may even bring unpredictable Therefore, it is necessary to detect the IoT function of the IoT home appliance in real time, and i...

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Problems solved by technology

[0004] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide the signal state indication circuit of the Internet of Things household appliances, which has the characteristics of ingenious design and humanized design, and effectively solves the problem of the Internet of Things due to the Internet of Things household appliances. The clutter of the signal is difficult to completely filter out and the frequency of the abnormal signal is relatively close to that of the normal signal, which leads to inaccurate detection of the IoT signal of the IoT home appliance, and a large error in the status indication of the IoT signal of the IoT home appliance.

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