The method of using a digital input channel to monitor several circuit components of locomotives
A technology of circuit components and digital input, which is applied in the field of monitoring several circuit components of locomotives, can solve problems such as increased wiring workload of locomotives, high hardware configuration requirements, and complex system design, and achieves reduction of wiring workload, reduction of input channel numbers, The effect of increasing reliability
Active Publication Date: 2017-12-01
CRRC DALIAN CO LTD +1
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[0003] Using this traditional point-to-point signal monitoring method, since the only output channel corresponds to a corresponding input channel, more data monitoring channels need to be used, resulting in higher hardware configuration requirements, complex system design, and locomotive wiring workload. increase, the reliability also decreases
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[0016] now attached figure 1 to attach Figure 5 The present invention is described further, as image 3 Shown is the basic principle of the invention. Assuming n=5, B1, B2, B3, B4, and B5 in the figure are the auxiliary contacts of the relay / contactor. When monitoring the closed state of B1, the main control microcomputer needs to activate the output channel 1. At this time, the negative electricity passes through the "output Channel 1" and "B1" reach the "input channel". When B1 is disconnected, no current flows through the input channel. When B1 is closed, current flows through the input channel, and the input channel transmits the signal to the master. The control microcomputer realizes the monitoring of the closed state of B1 by the main control microcomputer. To monitor the closed state of B2, the main control microcomputer needs to activate the output channel 2, and so on, the output channel 6 is not connected to the relay / contactor, which is used to test the multipl...
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The invention discloses a method using a digital input channel to monitor various circuit elements of a locomotive. A locomotive main control microcomputer can be used to receive signals by an input channel, and n input signals can be integrated into one group to share one digital input channel. The main control microcomputer can be used to activate output channels corresponding to n locomotive circuit elements Bi, and in addition, i is greater than or equal to 1 and is less than or equal to n. The input channel can be used to monitor the switching on / off states of the locomotive circuit elements Bi. The activation time of the output channels can be controlled by the main control microcomputer, and the clock period is 10(n+2) milliseconds, and comprises n+2 time buckets, and in addition, each time bucket can be used for the monitoring for 10milliseconds, and the first n time buckets can be used for the reading of the system feedback of each channel, and then the No.n+1 time bucket and the No.n+2 time bucket are used for the diagnosis of the multi-circuit system. By adopting the method provided by the invention, the required input channel numbers of the locomotive microcomputer can be reduced, the system design complexity can be simplified, the locomotive wiring work load can be reduced, and the reliability of the locomotive can be improved.
Description
technical field [0001] The invention relates to the technical field of locomotive monitoring, in particular to a method for monitoring several circuit elements of a locomotive by using one digital input channel. Background technique [0002] When the locomotive is self-testing and running, the locomotive main control microcomputer needs to monitor the status of each switch and relay / contactor on the locomotive in real time, so that the driver and passengers can check the current status of the switch or relay / contactor on the locomotive at any time from the computer display screen. working status. The way to take is generally to match the main control microcomputer through some input and output modules, and each module has multiple input channels and output channels. These modules are the interface between the locomotive control system and the locomotive microcomputer system, and can monitor high and low voltage through relay / contactor auxiliary contacts or switches. The ma...
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IPC IPC(8): G05B23/02
CPCG05B23/0256G05B2219/24048
Inventor 温吉斌陈旭曲铁涛刘鹏雷鸣
Owner CRRC DALIAN CO LTD