Non-contact multi-path direct current electric quantity detection device and method for sharing equipment room

Abstract

The invention discloses a non-contact multi-path direct current electric quantity detection device and method for a sharing equipment room. According to the technical schemes of the invention, the device includes a power source management module, a communication interface module, a button module, a multi-way acquisition interface circuit, a voltage sampling module, a CPU, an E2PROM, a watchdog, current sensing chips, and opening-closing type magnetic rings. According to the detection method, the non-contact opening-closing magnetic ring sleeves the power supply line of equipment and is clampedby a clamping buckle; a gap is formed in the opening of the magnetic ring through grinding; the current sensing chip is mounted on a micro circuit board, and then, the micro circuit board, together with the current sensing chip, is clamped at the gap of the opening-closing magnetic ring, so that all magnetic fields passing through the magnetic rings can pass through the sensing chips, and therefore, current measurement accuracy can be improved; the current sensing chips output current sensing signals in the form of analog signals; the CPU calculates a current value according to the linearityand offset of the current sensing chips; a direct-current voltage is obtained through the voltage sampling module; and integration is performed on the current and voltage, so that electric quantity can be obtained. The detection device and method have the advantages of low cost, high precision, non-contact type mode, safe construction and high convenience. With the detection device and method adopted, field wires are not needed to be changed.

Description

technical field [0001] The invention is suitable for a non-contact multi-channel direct current electric quantity detection method in a shared machine room, and in particular relates to a non-contact multi-channel direct current detection device and method. Background technique [0002] At present, the country is building many shared computer rooms, such as China Tower, which contains equipment from N operators, such as China Mobile, China Unicom, and China Telecom. When a large number of existing computer rooms are taken over, the switching power supply does not monitor the current value of each air switch, but only detects the total current value. At present, the calculation of electricity charges is based on the average distribution of N operators, which inevitably leads to a problem of uneven distribution. Operators and computer room managers are very concerned about this issue. [0003] In addition, most of the existing DC current detection units are contact type, that...

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Problems solved by technology

At present, the calculation of electricity charges is based on the average distribution of N operators, which inevitably leads to a problem of uneven distribution. Operators and computer room managers are very concerned about this issue.

[0003] In addition, most of the existing DC current detection units are contact type, that is, the current passes through the inside of the current transformer, so for the existing on-network computer room, it is not allowed to cut off the transmission or transmission equipment. It is not feasible and dangerous, and requires professional construction personnel; the other non-contact current transformer is also a split type, but its measurement range is generally large, the volume is large, and the accuracy is low, and it takes up a lot of time to install it on the load power supply line. Large size, not easy to fix, high power consumption, relatively high requirements for the entire system

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