Method for detecting serial digital quantity signals

Abstract

The invention discloses a method for detecting serial digital quantity signals. An ASK circuit, RET circuits and a TER circuit are used by the method, wherein the ASK circuit is located at the head end of the circuit and used for sending an ASK signal; the RET circuits are distributed on the segmented serial circuit and used for collecting the digital quantity signals to be detected, coding the digital quantity signals according to protocol and sending out an RET signal; and the TER circuit is located at the tail end of the circuit and used for sending a TER signal. All the signals are transmitted on the serial circuit connected in a segmented manner, particularly, the ASK signals which are continuously sent out by the ASK circuit are received by the RET circuit, and then, the RET signal is sent out by the RET circuit, thus connecting the serial circuit in the segmented manner; after the RET signal returned by the RET circuit is received by the ASK circuit, the digital quantity signals and the relative position of the RET circuit in the RET signal are detected according to the predetermined protocol; and after the TER signal returned from the TER circuit is received by the ASK circuit, that the ASK signals reach the tail end of the serial circuit is judged. Accordingly, the entire process circulating continuously constitutes the method for detecting the digital quantity signals through the serial circuit.

Description

Technical field: [0001] The invention belongs to the field of digital signal detection, and relates to a digital signal detection and application method. Background technique: [0002] At present, there are two commonly used digital quantity detection methods, one is to read the digital quantity signal of the detected equipment through one-to-one hard wiring, and the other is to use wired communication (such as field bus, etc.) to transmit the detected Digital signal of the device. These two methods each have certain disadvantages. In the first method, when there are many signals to be detected, the detection equipment needs to have more input ports and a larger number of transmission wires, and the reliable transmission distance is limited. The second method can transmit a lot of signals, but if the signal to be transmitted is relatively simple, the cost of using this method is relatively high, and the detected device also needs to have the function of wired communication....

AI Technical Summary

Problems solved by technology

These two methods have their own disadvantages. In the first method, when there are many signals to be detected, the detection equipment needs to have more input ports and a larger number of transmission wires, and the reliable transmission distance is limited.

The second method can transmit a lot of signals, but if the signal to be transmitted is relatively simple, the cost of using this method is relatively high, and the tested device also needs to have the function of wired communication

Images