Test system for power line carrier communication module
A technology of power line carrier and test system, which is applied in the direction of distribution line transmission system, line transmission monitoring/testing, line transmission components, etc. It can solve the problems of complicated device maintenance, incomplete test items, and inability to locate faults, etc., to achieve effective electrical The effect of protection
Inactive Publication Date: 2015-07-29
盛吉高科(北京)科技有限公司
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[0003] The purpose of the present invention is to propose a new test system to solve the problems that the existing PLC test system lacks short-circuit protection, complex device maintenance, incomplete test items, dependence on electric energy meters, computers or handhelds, and failure to locate faults
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[0036] A structural block diagram of a power line carrier communication module test system according to a specific embodiment of the present invention is shown in Figure 2. The system includes: a main control test board, a carrier signal attenuator, a carrier copy controller and an isolation transformer. Among them, the isolation transformer is used to isolate the interference noise in the power grid and provide a relatively pure carrier test environment for the test system. The carrier copy controller converts the data received by the isolated data transceiver circuit into a power line carrier signal and sends it to the power line in a transparent manner. The carrier attenuator attenuates the power line carrier signal of a specific frequency sent from the P1 terminal to the P2 terminal or from the P2 terminal to the P1 terminal by a certain multiple. The tooling interface circuit of the main control processing board is electrically connected with the PLC module under test thr...
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The invention relates to a test system for a power line carrier communication module, which belongs to the technical field of electronic product manufacturing. The test system is characterized by comprising a master control test board, a power line carrier signal attenuator, a carrier reading control device and an isolator, wherein the master control test board is formed by a test master control processor, a tool interface circuit, a power line controlled switch, a power adapter circuit, a power supply control and protection circuit, a power supply current detection circuit, a meter communication interface conditioning circuit, an isolation data transmitting and receiving circuit, and a test result display circuit. According to the test system, functions of short circuit protection of a power supply and a power line interface of the power line carrier communication module, carrier program loading, quiescent current detection, communication link test, dynamic power consumption test and weak current interface signal test are realized. The test system has the advantages of overall and perfect test project, safe and convenient operation, no configuration of an electric energy meter, a computer or a handheld computer, less manual intervention, high test efficiency and capability of providing fault location.
Description
technical field [0001] The invention relates to a test system for a power line carrier communication module, which belongs to the technical field of electronic product manufacturing. Background technique [0002] With the large-scale promotion and construction of the national grid power consumption information collection system, the power line carrier communication (PLC) technology and its modules have become the main communication scheme of the power consumption information automatic collection system due to its low construction cost. In order to ensure reliable quality during the mass production and supply of power line carrier communication modules, it is necessary to conduct comprehensive and strict factory tests on PLC modules. Chinese invention patent "Carrier Test Device" (application number: 200920199799.6) reports a PLC module test device based on electric energy meter, carrier copy controller and carrier attenuator. The device structure diagram is as follows figur...
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Inventor 庞浩李海南张文龙王盈盈
Owner 盛吉高科(北京)科技有限公司