Railway tunnel lighting lamp distributed control method based on wireless Internet-of-Things technology
A distributed control and tunnel lighting technology, applied in energy-saving control technology, electrical components, etc., can solve the problems of inaccurate control, inconvenient operation, high energy consumption, etc., and achieve the effect of functional integration, low cost, and small size
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[0036] The present invention will be described in detail below in combination with specific embodiments.
[0037] The present invention relates to a distributed control method for railway tunnel lighting fixtures based on wireless Internet of Things technology. The method is realized through the following steps:
[0038] Step 1: Obtain a single-phase AC 220V power supply. After isolation by the power failure detection isolation module, it is adjusted to a DC constant current with an adjustable voltage of 30V to 50V through the electromagnetic filter rectifier circuit, PFC circuit, switching circuit, isolation transformer and rectifier filter circuit. source, supplying power to lamps;
[0039] Step 2: The control circuit collects the circuit data in real time and compares it with the reference value, and transmits the instruction to the PWM modulation circuit, and the PWM modulation circuit controls the output of the switching circuit according to the instruction value, forming...
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