Multi-core intelligent electric meter clock precision test system based on low-power-consumption Bluetooth
A low-power bluetooth and smart meter technology, which is applied in signal transmission systems, measuring devices, and reducing energy consumption. It can solve the problems of low test accuracy, reduce costs, reduce error rates, and improve test efficiency.
Active Publication Date: 2020-12-29
STATE GRID ZHEJIANG ELECTRIC POWER CO MARKETING SERVICE CENT
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Problems solved by technology
As we all know, because of the particularity of the low-power Bluetooth protocol and the existence of the minimum connection interval, there will be an unfixed delay of 0~7.5ms for data transmission when the connection is established, so if the electrical signal is transferred on the basis of the connection Send it as a Bluetooth signal, and its test accuracy is not high
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[0027] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0028] Bluetooth low energy, or BLE for short, is a short-range wireless communication protocol. The new multi-core smart meter developed by the State Grid requires the wireless communication method of BLE for the interconnection between the meter and other supporting equipment. As a device for metering management and measuring user electricity consumption, the smart meter's clock accuracy is a very important indicator. Previously, the clock accuracy of smart meters was tested with light pulses. As the transmitter, the meter converts the clock signal of the meter into an optical pulse signal, and the test equipment acts as a receiver to receive the optical pulse signal, and accurately calculates the clock accuracy of the meter through the time interval of the received optical pulse signal. The present invention is produced under th...
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The invention discloses a multi-core intelligent electric meter clock precision test system based on low-power-consumption Bluetooth, and relates to the field of electric meter test. At present, whena clock precision test is carried out through a Bluetooth test clock signal, an electric signal needs to be converted into a Bluetooth signal for transmission, and the test precision is low. Accordingto the multi-core intelligent electric meter clock precision test system, electric meter test machines and / or the multi-core intelligent electric meter are / is provided with a configuration module, before entering a test, the configuration module configures the corresponding multi-core intelligent electric meter and / or the electric meter test machine to enter a DTM test mode, configures format ofa sending data packet, and sets a sending end and a receiving end to enter the same communication channel; and a transmitting end metering chip and a transmitting end Bluetooth module are connected ina wired mode. According to the technical scheme, the electric signal is converted into the Bluetooth signal in a Bluetooth DTM mode, it is guaranteed that time delay is minimum and fixed, thus introduced test errors can be reduced to the greatest extent, and the test precision is improved.
Description
technical field [0001] The invention relates to the field of electric meter testing, in particular to a multi-core smart electric meter clock accuracy test system based on low-power bluetooth. Background technique [0002] Chinese patent (publication number CN 109725278 A) introduces a non-contact smart meter indoor verification system, including a meter and a meter inspection platform. The meter includes a metering module, a control module, a storage module, a display module and a Bluetooth module. The meter inspection platform includes a bluetooth component and a detection module. The metering module is used to realize the metering function of the electric meter. The control module is connected to the metering module, the storage module, the display module and the bluetooth module of the electric meter. The Bluetooth component of the watch body connects wirelessly. Change the setting of the traditional external connector to a Bluetooth module, and all information is trans...
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IPC IPC(8): G01R35/04G08C17/02H04W4/80
CPCG01R35/04G08C17/02H04W4/80Y02D30/70
Inventor 李晨徐永进王黎欣姜咪慧施文嘉金阳忻
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO MARKETING SERVICE CENT