A single live wire switch control system and control method
A single live wire switch and control system technology, applied in control/regulation systems, instruments, and electrical variables, etc., can solve the problems of poor matching of lamps, low current, and control delays, and avoid delays and poor matching. Effect
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Embodiment 1
[0035] Such as figure 1 As shown, the control system of the present invention includes a switch control device 11 , a loop shunt device 12 and a load 13 , and the switch control device is configured to provide power to its internal circuit through the loop shunt device. The switch control device 11 is connected to the circuit shunt device 12 through a single-wire system. In particular, the circuit shunting device of the present invention provides power for the switch control device and micro current for the loop shunting device;
[0036] When the power supply voltage is lower than a certain low voltage, the loop shunt device provides microcurrent; when the power supply voltage is greater than or equal to a certain low voltage, the loop shunt device stops supplying microcurrent.
[0037] The power supply voltage is 220V with reference to the civil standard, and of course, other voltage standards, such as 110V, 380V, etc., can also be applied.
[0038] Specifically, the circui...
Embodiment 2
[0043] Such as Figure 4 shown as image 3 The purpose of the micro-current differential supply of the low voltage of the loop shunt device is to reduce the power consumption of the loop shunt circuit under different low voltages, through a plurality of the current limiting circuits 32 and the switch circuits 36 Composition, the loop control circuit 35 realizes segmented control according to the different voltages detected by the voltage detection circuit 33 .
[0044] The specific implementation plan is as follows:
[0045] The control circuit 35 detects through the voltage detection circuit 33 that when the 220V power supply voltage is lower than the first low voltage, the control circuit 35 controls the switch circuit 36 to open, the switch circuit 361 to close, and the current limiting circuit 32 provides the first current value for the loop; when the 220V power supply voltage is greater than the first low voltage but less than the second low voltage, the control circuit...
Embodiment 3
[0047] The present invention provides a control method for a single live wire switch control system. In order to reduce the power consumption of the loop shunt circuit under different low voltages, segmental control is realized through the loop switch circuit.
[0048] details as follows:
[0049] When the power supply voltage of the circuit is less than the first low voltage, the switch device control circuit controls the voltage limiting shunt circuit to provide the first current value for the loop shunt device; when the power supply voltage is greater than the first low voltage but less than the first low voltage At the second low voltage, the switch device control circuit controls the voltage limiting shunt circuit to provide the second current value for the loop shunt device; when the power supply voltage is greater than the second low voltage but less than the third low voltage, the The switch device control circuit controls the voltage limiting shunt circuit to provide ...
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