Abstract: A water faucet includes a first pipe, a housing and a first sealing ring. The first pipe includes a first sidewall, a second sidewall, a third sidewall and a first sliding portion. The first pipe includes a first accommodate space and an inlet. The housing includes a top wall, a second pipe and a second sliding portion corresponding to the first sliding portion. The second pipe includes a fourth sidewall connected with the top wall to form a second accommodate space and an outlet. When the first sliding portion slides to a first position, the first sealing ring is located between the fourth and the second sidewall to prevent water flowing between the first pipe and the housing. When the first sliding portion slides to a second position, water from the inlet can flow to the outlet via the first accommodate space, the though hole and the second accommodate space.

Abstract: A data acquisition concentrator and a data acquisition method are provided. The data acquisition concentrator comprises a data acquisition module (101) for acquiring data recorded by an instrument, a data processing module (102) for processing and encapsulating the data acquired by the data acquisition module (101), and a reporting module (103) for transmitting the data encapsulated by the data processing module (102) to a system server through a universal network. The data acquisition concentrator and the data acquisition method can be applied to meter reading on various occasions such as electric power, water, gas and the like without laying a special circuit.