Smart device control circuit with state hold function

A state maintenance and control circuit technology, applied in the direction of electrical program control, program control in sequence/logic controller, etc., can solve problems such as the risk of power consumption of smart devices

Active Publication Date: 2018-05-04
SHENZHEN OURUIBO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As smart devices become more and more popular, smart devices inevitably need core control devices, including but not limited to relays, thyristors, insulated gate field effect transistors, etc., and such devices inevitably require MCU through I / O It is controlled, but the MCU is in a reset state, such as remote upgrade, etc. At this time, the I / O of the MCU is in an uncertain state, which brings unpredictable risks to the power consumption of smart devices

Method used

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  • Smart device control circuit with state hold function
  • Smart device control circuit with state hold function
  • Smart device control circuit with state hold function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] refer to figure 2 , which is a circuit diagram of a specific embodiment of the above-mentioned smart device control circuit 100 . Such as figure 2 As shown, in this embodiment, the core control device 11 is a DC relay, and the DC relay is connected in reverse parallel with a diode 11a. That is to say, the input end of the relay is electrically connected to the cathode of the diode 11a, and the output end of the relay is electrically connected to the anode of the diode 11a. The function of the diode 11a is to prevent the counter electromotive force generated when the relay coil is energized and de-energized from causing damage to other devices. The relay input terminal is also electrically connected to a first voltage source VCC via a first resistor 101 , the voltage of the first voltage source VCC is, for example, 5V.

[0050] The state holding circuit module 12 includes a thyristor 124 , a first transistor 121 , and a second transistor 122 . The anode of the thyr...

Embodiment 2

[0066] refer to image 3 , which is a circuit diagram of another specific embodiment of the aforementioned smart device control circuit 100 . Such as image 3 As shown, in this embodiment, the core control device 11 is a DC relay, and the DC relay is connected in reverse parallel with a diode 11a. That is to say, the input end of the relay is electrically connected to the cathode of the diode 11a, and the output end of the relay is electrically connected to the anode of the diode 11a. The function of the diode 11a is to prevent the counter electromotive force generated when the relay coil is energized and de-energized from causing damage to other devices. The relay input terminal is also electrically connected to the first voltage source VCC via the seventh resistor 107 , the voltage of the first voltage source VCC is 5V, for example.

[0067] The state holding circuit module 12 includes a thyristor 124 , a first transistor 121 , a second transistor 122 , and a third transi...

Embodiment 3

[0080] refer to Figure 5 , which is a circuit diagram of another specific embodiment of the aforementioned smart device control circuit 100 . Such as Figure 5 As shown, in this embodiment, the core control device 11 is a magnetic latching relay (simplified by symbol L). The characteristic of the magnetic latching relay is that after electrification, the internal magnetization becomes a permanent magnet, and it can maintain an all-in-one state according to the principle that the same poles repel each other and the opposite poles attract each other.

[0081] The state holding circuit module 12 includes a driving circuit for driving the magnetic holding relay, which includes a first input end 201 and a second input end 202, and the first input end 201 and the second input end 202 are connected to the micro control unit 13 respectively. The first I / O port (relayoff) is electrically connected to the second I / O port (relayon). The function of the drive circuit is: when the firs...

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PUM

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Abstract

The invention relates to an intelligent equipment control circuit, which comprises: a controlled circuit module, a core control device, a state maintenance circuit module, and a micro-control unit, wherein the core control device is connected between the controlled circuit module and the state maintenance circuit module. The state maintenance circuit module is connected between the core control device and the micro-control unit. When a signal, different from a preset control signal, input by the micro-control unit is received, an input signal of the state maintenance circuit module maintains the state before the input signal is changed, so that the controlled circuit module maintains the state of the circuit. According to the intelligent equipment control circuit, unpredictable switching, of a working state of the controlled circuit module, due to uncertain state of an I / O port of the micro-control unit is avoided.

Description

technical field [0001] The invention relates to intelligent equipment control technology, in particular to an intelligent equipment control circuit. Background technique [0002] As smart devices become more and more popular, smart devices inevitably need core control devices, including but not limited to relays, thyristors, insulated gate field effect transistors, etc., and such devices inevitably require MCU through I / O It is controlled, but the MCU is in a reset state, such as remote upgrade, etc. At this time, the I / O of the MCU is in an uncertain state, which brings unpredictable risks to the power consumption of smart devices. Contents of the invention [0003] In view of this, it is necessary to provide a smart device control circuit, which can solve the unstable working state of the controlled device caused when the I / O port of the MCU in the smart device control circuit is in an uncertain state. [0004] An embodiment of the present invention provides a smart dev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/04
CPCG05B19/04
Inventor 田明强袁宇彬刘文扬王雄辉
Owner SHENZHEN OURUIBO ELECTRONICS
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