Load on/off control method
A micro-controller and pulse signal technology, applied in the direction of electric controllers, etc., can solve problems such as wrong actions, dangerous users, losses, etc., and achieve the effect of reducing the probability of wrong actions
Active Publication Date: 2012-11-21
SUZHOU SAMSUNG ELECTRONICS CO LTD
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Problems solved by technology
However, when the microcontroller makes an error, the output is basically a level signal. Once the microcontroller 1 makes an error (such as crash, oscillator stop, etc.), it may output a wrong high / low level control signal. This wrong The control signal will be driven by the driver 20 to drive the switch part 30 to control the wrong action of the load 40, which may cause danger or bring certain losses to the user
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[0017] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.
[0018] Such as figure 2 As shown, a load start-stop control method, the load driving circuit includes a microcontroller 1 , a conversion circuit 2 , a driver 3 , an execution unit 4 , and a load 5 . Wherein, the processing method adopted by the conversion circuit 2 may be an integral method or a Schmidt delay trigger method. The circuit is not required to be a specific circuit, TTL or CMOS, discrete device implementation or integrated circuit implementation can be implemented, as long as the signal conversion is realized, it will not be repeated here.
[0019] The load driving circuit starts, and the microcontroller 1 sends out a pulse signal with a certain frequency. The frequency range of the pulse signal can be between 20Hz and 1MHz. Within this frequency range, the duty cycle of the pulse signal can be between 0.05% and 99.95%. Choose be...
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The invention relates to a method of controlling start and stop of load, which comprises a load starting driving circuit. After a microcontroller sends out a pulse signal with a certain frequency, the pulse signal is received and processed into a high-to-low level signal by a conversion circuit, the driving circuit drives an execution component according to the received high-to-low level signal, the load is started in case of the high-to-low level, and the load is stopped in case of a low-to-high level, thereby realizing start and stop control of load. The load starting driving circuit of thedevice realizing the method comprises the microcontroller, a driver, the execution component, the load, and the conversion circuit connected between the microcontroller and the driver. The invention utilizes the pulse control signal with certain frequency to control the working of the load, the load is stopped working without the pulse signal, and the load can not actuate when the controller goeswrong, and the controller outputs the high-to-low level or the pulse signal with frequency or duty cycle dissimilar to the control signal, thereby reducing occurrence probability of malfunction.
Description
technical field [0001] The invention belongs to the technical field of electronics and electrics, and relates to a method for controlling a load by a microcontroller. Background technique [0002] Most of the existing microcontrollers on the market use level signal (high / low level) control to control the load, and send high / low level control signals to the driver 20 (Driver) through the microcontroller 10 (MCU). The actuator 20 drives the execution part 30 (Switch) to control the action of the load 40 (Load) (such as figure 1 shown). However, when the microcontroller makes an error, the output is basically a level signal. Once the microcontroller 1 makes an error (such as crash, oscillator stop, etc.), it may output a wrong high / low level control signal. This wrong The control signal will drive the switch part 30 by the driver 20 to control the wrong action of the load 40, which may cause danger or bring certain losses to the user. Contents of the invention [0003] The...
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IPC IPC(8): G05B11/01
Inventor 秦俸吉宋伟朱国生彭汉光
Owner SUZHOU SAMSUNG ELECTRONICS CO LTD