CN219164570U

CN219164570U - Function detection device of integrated power line carrier communication equipment

Info

Publication number: CN219164570U
Application number: CN202223439339.0U
Authority: CN
Inventors: 熊桂全; 滕绍伟; 曹金龙; 徐元伟; 张继浩
Original assignee: Qingdao Topscomm Communication Co Ltd
Current assignee: Qingdao Topscomm Communication Co Ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-06-09
Anticipated expiration: 2032-12-22

Abstract

The utility model relates to the technical field of power line carrier communication and discloses a function detection device of integrated power line carrier communication equipment, which comprises a strong electric isolation module 1, a strong electric isolation module 2, a signal attenuation module, a power supply module, a relay control module, a characteristic current detection module, a shoveling controller, a switch state detection module, a voltage and current acquisition module, a main control module, an Ethernet function module, an interface function detection module and an upper computer; all the functional modules are planned on a PCB board, are highly integrated in structure and are mutually cascaded in function. The utility model solves the problem of complex wiring redundancy of the detection equipment in the automatic production line of the carrier communication equipment, improves the stability and reliability of the detection equipment, thoroughly avoids the problems of poor plugging among the sub-boards, serious carrier crosstalk and high cascade failure rate of the discrete extended detection equipment, and improves the production test efficiency and test accuracy.

Description

Function detection device of integrated power line carrier communication equipment

Technical Field

The utility model relates to the technical field of power line carrier communication, in particular to a function detection device of integrated power line carrier communication equipment.

Background

The power line carrier is a communication mode using a high-voltage transmission line as a high-frequency signal transmission channel, and is a communication mode specific to a power system. Because the transmission line has high mechanical strength and good reliability, the construction investment and daily maintenance cost of the line are not needed, and the transmission line has certain economical efficiency and reliability. In the planning construction of a power system communication network, a power line carrier is used as a basic means for transmitting information of the power system, is widely applied to the power system communication, and undergoes the development process from discrete to integrated, single-function to microcomputer automatic control and from analog to digital.

In view of the great advantages of the power line carrier technology in reliability and running cost, the power grid company greatly pushes the power line carrier communication technology in electric acquisition and reading, the power line carrier communication equipment has great market space, a plurality of factories for developing and producing the power line carrier communication equipment are induced, and each factory needs to perform functional detection on the communication equipment in the developing, testing and producing processes of the power line carrier communication equipment so as to meet the standard requirements of the power grid company and ensure the excellent rate of products.

According to the field working environment and cascading requirements of the power line carrier communication equipment, a similar test environment is built in a laboratory or a production line, and on one hand, the test scheme cannot cover all functional test items and traverse device limit parameters; on the other hand, the detection equipment has large volume, complex connection and high cost; and the comprehensive test efficiency of the equipment is low, the automatic production requirement of a large number of power line carrier communication equipment cannot be met, and the production delivery schedule is seriously influenced.

The existing detection device for the expandable power line carrier communication equipment needs to develop a test sub-board corresponding to each function test item in a targeted manner, and when a plurality of equipment to be tested are tested in parallel, the detection device is huge in size, complex in wiring and poor in stability; in addition, when the detection device issues a test instruction and reports a test result through the bus, the time consumption and the scheduling response time of the system are increased to different degrees; further, the existing detection device needs to be equipped with a plurality of functional daughter boards, and the problems of poor plugging between each daughter board and the main board and high cascade failure rate are unavoidable.

Disclosure of Invention

Aiming at the defects and defects of the existing power line carrier communication equipment detection device, the utility model provides an integrated power line carrier communication equipment function detection device, which solves the problems of huge volume, complex wiring, carrier crosstalk, poor plugging between circuit boards, high failure rate and the like of the existing extended detection device.

The aim of the utility model can be achieved by the following technical scheme:

the utility model provides an integrate power line carrier communication equipment function detection device, includes strong electric isolation module 1, strong electric isolation module 2, signal attenuation module, power module, relay control module, characteristic current detection module, meter controller, on-off state detection module, voltage and current collection module, main control module, ethernet function module, interface function detection module and host computer.

The main control module is in data communication with the characteristic current detection module, the meter reading controller and the interface function detection module through serial ports respectively; the main control module is cascaded with the voltage and current acquisition module, the switch state detection module and the relay control module through GPIO to realize the acquisition of the voltage and current of the communication equipment to be tested, the detection of the switch state quantity and the on-off control of the strong-current and weak-current power supplies; the main control module is cascaded with the Ethernet functional module through the RMII interface to perform information interaction;

the Ethernet functional module is connected with the upper computer through a network cable, and the upper computer is matched with detection software to finish automatic detection of the specified scheme test items and output a test log and feedback detection results.

Further, the strong electric isolation module comprises a strong electric isolation module 1 and a strong electric isolation module 2, and is a band-stop filter which is specially designed for suppressing single-phase power line noise and plays roles of differential mode and common mode filtering within the frequency band range of 300kHz-30 MHz;

the signal attenuation module adopts a pi-type resistive 40dB attenuator, and the input and output impedance of the attenuator is 50 omega, and is mainly used for testing the attenuation capacity of the communication equipment to be tested.

Further, the power module comprises an AC-DC module and a DC-DC module, wherein the AC-DC module mainly provides 12V power for the detection device and the communication equipment to be detected, and the DC-DC module mainly provides 3.3V, 2.5V and 1.0V working power for the detection device.

Further, the meter reading controller comprises a narrow-band meter reading controller, a wide-band meter reading controller and a dual-mode meter reading controller, and the narrow-band meter reading controller, the wide-band meter reading controller and the dual-mode meter reading controller are communicated with the main control module through serial ports to complete the carrier and radio frequency communication function test of the tested communication equipment.

Furthermore, the voltage and current acquisition module is used for sampling the power supply voltage of each path of the tested communication equipment and the static and dynamic current of the whole communication equipment 12V mainly through a voltage and current sampling circuit.

The interface function detection module is mainly used for detecting the pin level state of the pin of the tested communication equipment and the serial port function of the pin.

The beneficial technical effects of the utility model are as follows: the integrated power line carrier communication equipment function detection device has the characteristics of integration, customization, miniaturization, easy compatibility, low maintenance cost and the like, achieves the purposes of automatic line body batch, standardization and multi-station parallel test, and effectively solves the carrier crosstalk problem caused by the redundant wiring of the existing expansion type detection device; the problem of poor plugging between each daughter board and the main board is thoroughly avoided, the response time of each test instruction system is reduced by 10ms by directly dispatching peripherals through a main control rather than a bus communication mode, the production test beat is improved by 600pcs/h, the test time is shortened, and the test efficiency is improved; the total cost is saved by 30% compared with an expansion type detection device.

Drawings

Fig. 1 is a schematic functional diagram of a detecting device according to an embodiment of the present utility model.

Fig. 2 is a 2-dimensional plan view of a motherboard of a detection device according to an embodiment of the present utility model.

Fig. 3 is a diagram showing a structure of a detecting device according to an embodiment of the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Examples:

as shown in fig. 1, an integrated power line carrier communication device function detection apparatus includes: the system comprises a strong electric isolation module 1, a strong electric isolation module 2, a signal attenuation module, a power module, a relay control module, a characteristic current detection module, a meter reading controller, a switch state detection module, a voltage and current acquisition module, a main control module, an Ethernet function module, an interface function detection module and an upper computer;

the main control module is in data communication with the characteristic current detection module, the meter reading controller and the interface function detection module through serial ports respectively; the main control module is cascaded with the voltage and current acquisition module, the switch state detection module and the relay control module through GPIO to realize the acquisition of the voltage and current of the communication equipment to be tested, the detection of the switch state quantity and the on-off control of the strong-current and weak-current power supplies; the main control module is cascaded with the Ethernet functional module through the RMII interface to perform information interaction; the main control module is mainly matched with other functional modules to complete test instruction forwarding, result reporting, data processing and peripheral control. According to the utility model, a bus communication control mode is not adopted any more for information interaction, the main control directly schedules the peripheral equipment, so that the scheduling time can be greatly reduced, the system response is optimized, the system response time of each test instruction is reduced by 10ms, the production test beat is improved by 600pcs/h, and the expected target of production test is achieved.

The upper computer mainly comprises two parts of functions, one is the configuration and execution of a detection scheme, and a test engineer configures a related detection scheme and specific parameters according to the function detection requirement of the communication equipment to be tested; and secondly, the Ethernet functional module is communicated with the main control of the detection device to finish the issuing of the test command and the reporting and displaying of the result.

The strong electric isolation module comprises a strong electric isolation module 1 and a strong electric isolation module 2, and is a band-stop filter which is specially designed for suppressing single-phase power line noise and has the functions of differential mode and common mode filtering within the frequency band range of 300kHz-30 MHz; the design can completely avoid the occurrence of carrier crosstalk phenomenon in the test process.

The signal attenuation module adopts a pi-type resistive 40dB attenuator, the input and output impedance of the attenuator is 50 omega, and the signal attenuation module is mainly matched with a strong electric isolation module to finish the attenuation capability test of the tested communication equipment. The attenuation module thoroughly solves the problem of inconsistent attenuation characteristics of the LC attenuator under different frequencies, and solves the problem of high test reject ratio.

The power module comprises an AC-DC module and a DC-DC module, wherein the AC-DC module mainly provides 12V power for the detection device and the communication equipment to be detected, and the DC-DC module mainly provides 3.3V, 2.5V and 1.0V working power for the detection device. The utility model does not need to be provided with an extra power adapter, only needs to input an AC220V power supply, thoroughly solves the problem of messy wiring of the power adapter of the discrete expansion type detection device, greatly reduces the production cost of the detection device, and saves one third of the cost compared with the power adapter required by the discrete expansion type detection device by a single power module.

The meter reading controller comprises a narrow-band meter reading controller, a wide-band meter reading controller and a dual-mode meter reading controller, and the narrow-band meter reading controller, the wide-band meter reading controller and the dual-mode meter reading controller are communicated with the main control module through serial ports to complete the carrier and radio frequency communication function test of the tested communication equipment. In order to be compatible with collinear production tests of different communication equipment, the utility model arranges the shoveling controllers with different frequency bands on the same PCB, interacts with the main control module through different serial ports respectively, and automatically selects the frequency band of the shoveling controller according to the test requirement test scheme, thereby completely avoiding the problem of complex working procedures of manually replacing the shoveling controllers by test engineers, greatly simplifying the complexity of the production working procedures and improving the production efficiency by nearly 5 percent.

The interface function detection module comprises a socket and a shielding wire which are connected with the pin of the tested communication equipment, and is mainly used for detecting the pin level state of the pin of the tested communication equipment and the serial port function of the pin of the tested communication equipment. The utility model is compatible with various interfaces of the carrier communication equipment of the power line of the voltage in the market at present, has good compatibility and completely supports the collinear production test of different carrier communication equipment.

And the voltage and current acquisition module is used for sampling the power supply voltage of each path of the tested communication equipment and the 12V static and dynamic current of the whole communication equipment through a voltage and current sampling circuit.

As shown in fig. 2, a 2-dimensional plan view of a motherboard of a detection device in an embodiment of a function detection device for an integrated power line carrier communication device is provided. Each functional module is arranged on the same PCB, and the size is reduced by one third compared with the main board of the extended detection device.

As shown in fig. 3, a detection device structure diagram of an embodiment of a function detection device of an integrated power line carrier communication device is shown. The detection device is provided with communication equipment to be detected, and multi-station parallel testing is realized according to actual production requirements.

The above embodiments are illustrative of the specific embodiments of the present utility model, and not restrictive, and various changes and modifications may be made by those skilled in the relevant art without departing from the spirit and scope of the utility model, so that all such equivalent embodiments are intended to be within the scope of the utility model.

Claims

1. The integrated power line carrier communication equipment function detection device is characterized by comprising a strong electric isolation module 1, a strong electric isolation module 2, a signal attenuation module, a power module, a relay control module, a characteristic current detection module, a shoveling controller, a switch state detection module, a voltage and current acquisition module, a main control module, an Ethernet function module, an interface function detection module and an upper computer;

2. The function detection device for integrated power line carrier communication equipment according to claim 1, wherein the strong electric isolation module comprises a strong electric isolation module 1 and a strong electric isolation module 2, and is a band reject filter which is designed to suppress single-phase power line noise and has a differential mode and a common mode filtering function in a frequency band range of 300kHz-30 MHz.

3. The function detection device of integrated power line carrier communication equipment according to claim 1, wherein the signal attenuation module adopts a pi-type resistive 40dB attenuator, and the input and output impedance of the attenuator is 50 Ω, and is mainly matched with the strong electric isolation module described in claim 2, so as to complete the test of the attenuation capability of the communication equipment to be tested.

4. The integrated power line carrier communication device function detection apparatus according to claim 1, wherein the power supply module comprises an AC-DC module and a DC-DC module, wherein the AC-DC module mainly provides 12V power for the detection apparatus and the communication device under test, and the DC-DC module mainly provides 3.3V, 2.5V and 1.0V working power for the detection apparatus.

5. The integrated power line carrier communication device function detection apparatus according to claim 1, wherein the controller comprises a narrowband controller, a broadband controller and a dual-mode controller, which communicate with the main control module through serial ports to complete the function test of the carrier and radio frequency communication of the communication device under test.

6. The device for detecting functions of an integrated power line carrier communication device according to claim 1, wherein the voltage and current acquisition module is configured to sample each path of power supply voltage of the communication device to be detected and sample 12V static and dynamic currents of the whole communication device mainly through a voltage and current sampling circuit.

7. The apparatus according to claim 1, wherein the interface function detection module is mainly configured to detect a pin level state of a pin of the communication device under test and a serial port function thereof.