Switching value signal output circuit and method
A switching signal and output circuit technology, applied in the direction of instruments, computer control, simulators, etc., can solve the problems of switching signal output errors, malfunctions, etc., to avoid malfunctions and improve safety and reliability.
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Embodiment 1
[0045]Embodiment 1 of the present application provides a switching signal output circuit, which will be described in detail below with reference to the accompanying drawings.
[0046] see figure 1 , which is a schematic diagram of an output circuit of a switching signal provided in Embodiment 1 of the present application.
[0047] The circuit described in the embodiment of the present application is applied to a continuous working automatic control system, such as a continuous working automatic switch control system or a continuous working automatic temperature control system, etc., and the switching signal is used to control the control operation of the automatic control system . This application does not specifically limit the switch signal.
[0048] The circuit includes: a processor 101 , a controller 102 , a control switch 103 , a diagnosis switch 104 , a voltage follower 105 and an analog-to-digital converter 106 .
[0049] The first end of the control switch 103 is co...
Embodiment 2
[0069] Embodiment 2 of the present application also provides another output circuit for switching signal, which will be described in detail below with reference to the accompanying drawings.
[0070] see figure 2 , which is a schematic diagram of another switching signal output circuit provided in Embodiment 2 of the present application.
[0071] The processor described in the embodiment of the present application is a microprocessor MCU203, and the controller is a complex programmable logic device CPLD202. On the basis of the circuit described in Embodiment 1, the circuit described in this embodiment also includes: a voltage divider circuit 207 and diode 208 .
[0072] The control switch in this embodiment of the application is the first NMOS transistor 203; the diagnostic switch is the second NMOS transistor 204; the gate of the first NMOS transistor 203 and the gate of the second NMOS transistor 204 are connected to the The controller is connected; the drain of the first...
Embodiment 3
[0091] Based on the output circuit of the switching signal provided by the above embodiments, Embodiment 3 of the present application also provides a method for outputting the switching signal, which will be described in detail below with reference to the accompanying drawings.
[0092] see image 3 , which is a flow chart of a switching signal output method provided in Embodiment 3 of the present application.
[0093] The method described in the embodiment of the present application can be applied to the circuit described in any one of the above embodiments, and the method includes the following steps:
[0094] S101: within the first judging time, make the processor send a first state signal to the controller to control the control switch and the diagnostic switch to be closed, and judge whether the output signal of the analog-to-digital converter is consistent with a preset Whether the output signals are consistent, if not, it is judged that the control switch and / or the di...
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Abstract
Description
Claims
Application Information
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