Self-powered power consumption detecting device and power consumption detecting method thereof

摘要

The power consumption detecting device is without external power supply. It installed on the electric equipment. This self-powered detecting device comprises at least one thermoelectric element, a processor and a wireless transmitter. As the electric equipment working, the temperature difference on the surface of the electric equipment drives the thermoelectric element to generate a voltage signal. Therefore, a self-powered thermoelectric detecting device will decrease standby power demand. The amplitude of voltage signal is proportion to the temperature difference. In the same time, the power generated by thermoelectric element can be a power source of the wireless transmitter and the chip or processor, so the supply of exterior power is no needed. The wireless transmitter transmits a signal, which is according to the power consumption of electric equipment or electric appliance, to the control center.

主权项

1. A power consumption detecting device installed on an electric equipment, wherein the power consumption detecting device comprises:
a thermoelectric sensing element used for generating a voltage signal by the temperature difference between the surface of the electric equipment and atmosphere during the operation of the electric equipment, and the thermoelectric sensing element is capable of generating power by the temperature difference without external power supply; a processor used for obtaining the value of power consumption of the electric equipment according to the voltage signal, and the value of power consumption is proportion to the voltage signal which generated by the thermoelectric detecting device; and a wireless transmitter transmitting a power consumption signal to an electric control center; wherein the thermoelectric sensing element is embodied as a device directly attached on the surface of the electric equipment, and the thermoelectric sensing element has a P-type semiconductor material and an N-type semiconductor material which are electrically connected to the wireless transmitter.