Signal detection circuit with multi-state output

Abstract

The invention discloses a signal detection circuit with multi-state output. The signal detection circuit comprises an input module; the input end Vin1 of the input module is used for receiving a detection input signal 1; the input end Vin2 of the input module receives a detection input signal 2; the first output end and the second output end of the input module are respectively connected with the input end A1 and the input end A2 of the output module; the input end A1 of the output module is connected with the first output end of the input module and is used for receiving a control signal A1; the input end A2 of the output module is connected with the second output end of the input module and is used for receiving the control signal A2; the power input end of the output module is connected with the output end of the second power module; and the output end Vo of the output module 20 is connected with the detection chip. Two input signal states can be represented through four signal states of one output port, signal parallel detection is achieved, the number of input and output ports of a signal processing chip is reduced, and detection errors are reduced.

Description

Technical field [0001] Technical Field The present invention relates to electronic circuits, and more particularly to signal detection circuit having a multi-state outputs. Background technique [0002] Currently, electronic circuits are often simultaneously detecting multi-channel input signal, then converted to multiple output signals, and then sent as a detection signal processing chip chip (e.g., microcontroller), which will take up more detection chip input and output ports, port detection chip resources caused tension. [0003] Prior art solutions, generally using integrated chip multipath signal detection to detect multiple signals, however, multi-channel signal detection integrated chip (e.g., microcontroller) required by the addressing modes corresponding strobe signals sequentially path, enabling serial multiplex signal reception, if a larger number of signals to be detected, then the multi-channel signal detection integrated chip (e.g., microcontroller) will be caused ...

AI Technical Summary

Problems solved by technology

[0002] At present, electronic circuits often detect multiple input signals at the same time, then convert them into multiple output signals, and then send them to the signal processing chip (such as a single-chip microcomputer) as a detection chip, which will occupy more input and output ports of the detection chip. Cause the port resources of the detection chip to be tight

[0003] In the existing technical solutions, multi-channel signal detection integrated chips are generally used to detect multi-channel signals. However, multi-channel signal detection integrated chips (such as single-chip microcomputers) need to sequentially select corresponding signal channels through address selection. In order to achieve serial reception of multi-channel signals, if the number of signals to be detected is large, then the multi-channel signal detection integrated chip (such as a single-chip microcomputer) will cause asynchronous signal detection due to detection delay and increase the detection error

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