Calibration device and calibration method for electric energy metering
A technology of electric energy measurement and calibration method, which is applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems of incompatible product calibration, small adaptability, and inability to meet the calibration requirements of various products, achieving short calibration time, The effect of high precision and low equipment procurement cost
Active Publication Date: 2020-11-24
CHIPSEA TECH SHENZHEN CO LTD
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[0006] However, the electric energy metering device compares the voltage parameter and current parameter obtained by the metering circuit with the standard value of the voltage parameter and the standard value of the current parameter through the controller to calculate the calibration parameter, and in the working mode based on the calibration parameter. The obtained voltage parameters and current parameters are calibrated. For different electronic devices, it is necessary to know the voltage standard value and current standard value in advance, and there must be a standard load for calibration, which is subject to great limitations and cannot be calibrated for different products. , the adaptability is very small, and it cannot meet the calibration needs of various products
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[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0030] figure 1 , is the power calibration device realized by the present invention, such as figure 1 The device shown in the figure is powered by the mains, and provided to high-precision measuring equipment and equipment to be calibrated after being regulated by a regulated source (usually a 220V power supply). The main control board is powered by DC3.3V from high-precision metering equipment, and reads the current electrical parameters of high-precision metering equipment through 485 communication and in accordance with the high-precision metering equipment protocol (485 communication is only a...
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The present invention discloses an electric energy measuring calibration device. The device comprises a high-precision measuring device, a voltage stabilization source, a main control board, and two loads; the voltage stabilization source is subjected to voltage stabilization to supply a voltage to the high-precision measuring device and a device to be calibrated, the main control board is supplied with power by the high-precision measuring device and reads electrical parameters of the high-precision measuring device at present; the two loads are connected in parallel on the high-precision measuring device, and the high-precision measuring device is connected with the device to be calibrated; and the main control board is connected with the device to be calibrated. The electric energy measuring calibration device is suitable for calibration of any load and is low in device purchasing cost, the calibration can be automatically performed with no need for manual intervention, and the calibration time is short.
Description
technical field [0001] The invention belongs to the technical field of electric energy measurement, in particular to an electric energy measurement and calibration device and method for electronic products. Background technique [0002] With the popularity of the Internet of Things, consumer products have also entered the era of the Internet of Things, and are fully upgraded to intelligence. From the initial network control, to electric energy metering and monitoring, to fault warning and energy-saving smart management, new just-needed functions have emerged as the times require. , Electric energy metering began to emerge and played the leading role. [0003] In the face of higher and higher precision requirements, when the calibration-free chip cannot meet the precision requirements, how to calibrate the whole machine and simplify the calibration process has become a problem that we need to study. [0004] As we all know, the calibration of high-precision measurement equip...
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IPC IPC(8): G01R35/04
CPCG01R35/04
Inventor 谢燕张伟伟刘志成
Owner CHIPSEA TECH SHENZHEN CO LTD