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Signal detector and detection method thereof

A detector and signal technology, applied in the field of signal detectors, can solve the problems of operating temperature, inability to integrate integrated circuits, and low circuit stability, and achieve the effect of improving stability

Inactive Publication Date: 2010-07-28
产晶集成电路股份有限公司
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Problems solved by technology

[0003] However, in the structure of the voltage detection circuit in the prior art, because the analog-to-digital conversion circuit is a non-integrated circuit, the disadvantage of the traditional voltage detection circuit is that the stability of the circuit is not high, and it is easily affected by external environmental factors. For example, the influence of operating temperature, and because it is not an integrated circuit type, it cannot be integrated with other integrated circuits, and the purpose of system integration cannot be achieved, resulting in restrictions on its application level

Method used

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Embodiment Construction

[0024] figure 1 It is a schematic diagram of the system, which is used to illustrate the module structure and operation of the signal detector of the present invention. The signal detector 1 in the form of an integrated circuit can be integrated with other integrated circuits, for example, the signal detector 1 can be integrated into a microcontroller MCU, thereby improving the integration degree of the system. Such as figure 1 As shown, the signal detector 1 includes an analog-to-digital conversion circuit ADC module 2, a zero point module 3, a voltage detection module 4, a frequency detection module 5, and a register module 6. Here, the analog-to-digital conversion circuit ADC module 2 and / or Or the zero point module 3 and / or the voltage detection module 4 and / or the frequency detection module 5 and / or the register module 6 are integrated circuit modules.

[0025]The analog-to-digital conversion circuit ADC module 2 converts the input low-voltage full-wave or half-wave sig...

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Abstract

The invention discloses a signal detector and a detection method thereof used in a voltage signal detection environment. By means of the digital signal converted by an input low-voltage square-wave signal, an input low-voltage full-wave or half-wave signal and / or a commercial AC signal, the signal detector and the method thereof can judge the voltage level and / or frequency and / or zero point and / or phase and abnormality of the input low-voltage full-wave or half-wave signal and / or the commercial AC signal and can output an interrupt signal for subsequent processing.

Description

technical field [0001] The present invention relates to signal detection, in particular to an environment for detecting voltage signals, which can determine the voltage level and / or frequency and / or zero point and / or phase of the input signal, and whether it is abnormal, and can A signal detector that outputs an interrupt signal for subsequent processing and a detection method thereof. Background technique [0002] The voltage detection circuit in the prior art includes an analog-to-digital conversion circuit, a timer, and a microcontroller MCU (Multipoint Control Unit) firmware. When detecting whether the voltage signal, such as the mains signal, is normal, first, in the voltage detection circuit structure, the analog-to-digital conversion circuit will be continuously used to detect the voltage signal, such as the attenuated and full-wave rectified mains signal. Signal, do the sampling / converting action to monitor the level of the voltage signal. Then, perform at least 16...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/165
Inventor 曾定钦林树嘉谢文岳
Owner 产晶集成电路股份有限公司
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