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PWM relay control circuit

A relay control and relay technology, applied in the aviation field, can solve the problems of increasing design cost, maintaining low energy, and high driving voltage, achieving the effect of saving energy consumption and solving high energy loss

Pending Publication Date: 2021-12-03
国营芜湖机械厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the field of aviation, the relay drive circuit controls the charge and discharge of the relay coil through the high and low levels to complete the switch of the relay. After the relay is energized, the relay is disconnected; because the relay needs a large amount of energy at the moment of pull-in, the driving voltage is high, and the maintenance energy required after the pull-in is small, and the voltage remains unchanged during the process of the relay being energized, so that There is a high energy loss in the relay control circuit
In addition, in a relay control circuit and power supply with a Chinese patent application number of 201811647266.X, two power supplies are used to achieve relay drive loss reduction, but an auxiliary power supply branch is added to the design, and a control circuit is also added at the same time. Increased design cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as figure 1 As shown, a PWM relay control circuit is connected to the relay coil, connected to the power module, and connected to the MCU, including:

[0020] MCU module, used to output PWM waveforms with different duty ratios;

[0021] Power module for single power output;

[0022] The relay driving circuit is connected with the PWM signal of the power module and the MCU module, and is used to control the driving voltage of the relay coil to control the on and off of the relay.

[0023] The power supply module provides high-voltage power supply, and the voltage can be reduced through the duty cycle.

[0024] By adjusting the duty cycle of the PWM signal to adjust the relay driving voltage so that the relay has a high voltage at the moment of turning on, and the driving voltage is reduced during the relay maintenance period, thus saving unnecessary energy consumption of the relay after starting, and thus solving the problem of relay absorption. There is a proble...

Embodiment 2

[0030] Such as figure 2 As shown, a PWM relay control circuit is connected to the relay coil, connected to the power module, and connected to the MCU, including:

[0031] MCU module, used to output PWM waveforms with different duty ratios;

[0032] Power module for single power output;

[0033] The relay driving circuit is connected with the PWM signal of the power module and the MCU module, and is used to control the driving voltage of the relay coil to control the on and off of the relay.

[0034] By adjusting the duty cycle of the PWM signal to adjust the relay driving voltage so that the relay has a high voltage at the moment of turning on, and the driving voltage is reduced during the relay maintenance period, thus saving unnecessary energy consumption of the relay after starting, and thus solving the problem of relay absorption. There is a problem of high energy loss after the combination.

[0035] The relay drive circuit adjusts the relay drive voltage by adjusting ...

Embodiment 3

[0042] Such as image 3 As shown, a PWM relay control circuit is connected with the relay coil, connected with the S2 switch, and connected with the MCU, including:

[0043] MCU module, used to output PWM waveforms with different duty ratios;

[0044] Power module for single power output;

[0045] The relay driving circuit is connected with the PWM signal of the power module and the MCU module, and is used to control the driving voltage of the relay coil to control the on and off of the relay.

[0046] By adjusting the duty cycle of the PWM signal to adjust the relay driving voltage so that the relay has a high voltage at the moment of turning on, and the driving voltage is reduced during the relay maintenance period, thus saving unnecessary energy consumption of the relay after starting, and thus solving the problem of relay absorption. There is a problem of high energy loss after the combination.

[0047] The relay drive circuit adjusts the relay drive voltage by adjustin...

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PUM

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Abstract

The invention relates to the field of aviation, in particular to a PWM relay control circuit which comprises an MCU assembly used for outputting PWM waveforms with different duty ratios; a power supply assembly is used for single power supply output; a relay driving circuit is connected with the power supply assembly and PWM signals of the MCU assembly and used for controlling relay coil driving voltage to control on and off of a relay, the relay driving voltage is adjusted by adjusting the duty ratio of the PWM signals so that the relay can have high voltage at the moment of on, the driving voltage is reduced in the maintaining period of the relay. Therefore, unnecessary consumed energy after the relay is started is saved, and the problem of high energy loss after the relay is actuated is solved.

Description

technical field [0001] The invention relates to the aviation field, in particular to a PWM relay control circuit. Background technique [0002] At present, in the field of aviation, the relay driving circuit controls the charging and discharging of the relay coil through the high and low levels to complete the switching of the relay. After the relay is powered on, the relay is disconnected; because the relay needs a large amount of energy at the moment of pull-in, the driving voltage is high, and the maintenance energy required after the pull-in is small, and the voltage remains unchanged during the process of the relay being energized, so that There is a high energy loss in the relay control circuit. In addition, in a relay control circuit and power supply with Chinese patent application number 201811647266.X, two power supplies are used to achieve relay drive loss reduction, but an auxiliary power supply branch is added to the design, and a control circuit is also added a...

Claims

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Application Information

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IPC IPC(8): H01H47/02
CPCH01H47/02
Inventor 邹云飞王纬国王洪涛胡晨
Owner 国营芜湖机械厂
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