CN103281101A - PLC automated testing device - Google Patents
PLC automated testing device Download PDFInfo
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- CN103281101A CN103281101A CN2013102235488A CN201310223548A CN103281101A CN 103281101 A CN103281101 A CN 103281101A CN 2013102235488 A CN2013102235488 A CN 2013102235488A CN 201310223548 A CN201310223548 A CN 201310223548A CN 103281101 A CN103281101 A CN 103281101A
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Abstract
The invention discloses a PLC automated testing device. The PLC automated testing device is characterized by comprising a power input interface, a first signal isolation system, a first data input and output interface, a first high voltage isolation system, a second signal isolation system, a second data input and output interface, a second high voltage isolation system, an attenuation network, a power input module, a CPU control system and a signal testing system. The power input module and the attenuation network are respectively connected with the CPU control system, the first signal isolation system and the second signal isolation system are respectively connected with the power input interface, the first high voltage isolation system and the second high voltage isolation system are respectively connected with the attenuation network, the first signal isolation system and the first high voltage isolation system are respectively connected with the first data input and output interface, the second signal isolation system and the second high voltage isolation system are respectively connected with the second data input and output interface, and the signal testing system is used for being connected with two PLC devices to be tested in testing. The PLC automated testing device can automatically test the PLC devices.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of PLC automated test device.
Background technology
Along with developing rapidly of science and technology, obtained the application of more and more wider model based on the equipment of power line communication (PLC) technology, power line by utilizing transmission current is as communications carrier, make power line communication have great convenience, as long as any place that supply socket is arranged in the room, need not dial, the express network that just can enjoy 4.5～45Mbps immediately inserts, come browsing page, call, with watch online film, thereby realize collection data, voice, video, and electric power is in " four networks one platform " of one! In addition, can utilize PLC to couple together household electrical appliances such as the phone in the house, TV, sound equipment, refrigerator, carry out centralized control, realize the dream of " wired home ".At present, PLC mainly is as a kind of access technology, and the solution of broadband network " last kilometer " is provided, and is applicable to the residential quarter, school, hotel, fields such as office building.
Power line communications apparatus (PLC) will just can offer the end user through strict test before dispatching from the factory, but there is not the instrument factory prerequisite at present for testing scheme and the testing equipment of the complete power line communications apparatus (PLC) of a cover, so the technical problem that the testing equipment of power line communications apparatus (PLC) has become current urgent need to solve.
Summary of the invention
In order to solve the problems referred to above of prior art, be necessary to provide a kind of automated test device for PLC equipment.
The technical scheme that technical solution problem of the present invention provides is:
A kind of PLC automated test device, it comprises power input interface, first signal isolation system, first data input/output interface, the first high pressure shielding system, the secondary signal shielding system, second data input/output interface, the second high pressure shielding system, attenuation network, Power Entry Module, system control cpu and signal test system, system control cpu is connected with attenuation network with Power Entry Module respectively, power input interface is connected with the secondary signal shielding system with first signal isolation system respectively, attenuation network is connected with the second high pressure shielding system with the first high pressure shielding system respectively, first data input/output interface is connected with the first high pressure shielding system with first signal isolation system respectively, second data input/output interface is connected with the second high pressure shielding system with the secondary signal shielding system respectively, and signal test system is used for connecting two PLC equipment to be measured of test.
Wherein, described first data input/output interface and second data input/output interface are respectively applied to be connected to two PLC equipment to be measured.
Wherein, described first signal isolation system and secondary signal shielding system are used for isolating the PLC network signal.
Wherein, the described first high pressure shielding system and the second high pressure shielding system are used for isolating the high-voltage signal of PLC signal.
Wherein, described attenuation network is used for the transmission environment of simulation PLC signal.
Compared with prior art, PLC automated test device of the present invention is by the actual signal transmission environment of attenuation network simulation, and the means of testing by automation is to the PLC testing equipment, verifies workload and testing time the early stage that has reduced PLC equipment.
Description of drawings
Fig. 1 is the theory diagram of PLC automated test device of the present invention.
Fig. 2 is the test flow chart of PLC automated test device of the present invention.
Embodiment
As shown in Figure 1, PLC automated test device of the present invention comprises power input interface, first signal isolation system, first data input/output interface, the first high pressure shielding system, secondary signal shielding system, second data input/output interface, the second high pressure shielding system, attenuation network, Power Entry Module, system control cpu and signal test system.System control cpu is connected with attenuation network with Power Entry Module respectively.Power input interface is connected with the secondary signal shielding system with first signal isolation system respectively.Attenuation network is connected with the second high pressure shielding system with the first high pressure shielding system respectively.First data input/output interface is connected with the first high pressure shielding system with first signal isolation system respectively.Second data input/output interface is connected with the second high pressure shielding system with the secondary signal shielding system respectively.Signal test system is used for connecting two PLC equipment of test.
First signal isolation system and secondary signal shielding system are used for isolating the PLC network signal, prevent that two PLC equipment from connecting by power input interface.The first high pressure shielding system and the second high pressure shielding system are used for isolating the high-voltage signal of PLC signal, thereby isolate the PLC network signal to attenuation network.Attenuation network is used for the transmission environment of simulation PLC signal.System control cpu is used for the attenuation degree of attenuation network is controlled.Signal test system is used for the signal strength signal intensity of two PLC equipment of test, thereby judges two signal attenuations between the PLC equipment whether in reasonable range, thus judge whether qualified.
Because PLC equipment wants two above monomers could realize the transmission of data, that is to say and want to form the communication that a local area network (LAN) is realized data after two above PLC device synchronization that this could realize test after just requiring will guarantee two PLC device synchronization when test.Therefore, when adopting automated test device of the present invention to test, two PLC equipment are received first data input/output interface and second data input/output interface respectively, and two PLC equipment all are connected with signal test system.Power input interface is used for inserting power supply, and power supply is given two PLC power devices by first signal isolation system and secondary signal shielding system respectively.Two PLC equipment in same network can carry out synchronously automatically, at this moment system control cpu is controlled the 0dB that decays to of attenuation network, make between two PLC and carry out data transmission test by network interface, the pad value of system control cpu control attenuation network is increased to 60dB gradually from 0dB, detect in the influence of this interval decay to the transmission of PLC device signal by signal test system, if transfer of data is not influenced and will not pass through test if transfer of data is influential by test.
Comprise the steps: when as shown in Figure 2, PLC automated test device of the present invention is tested
Step 1: when the PLC automated test device, system control cpu can be defined into 0dB with the pad value of attenuation network, and at this moment the pad value of signal isolation system can or not undertaken by this path to guarantee two power line communications apparatus more than 70dB synchronously.
Step 2: when PLC device power startup meeting is undertaken by this path search of attenuation network the other side automatically synchronously.Can carry out when at the consolidated network environment automatically synchronously, (pad value can greater than 70dB) can be not synchronous when not at the consolidated network environment.If can not be synchronous, then system control cpu can check the pad value of attenuation network.
Step 3: after two power line communications apparatus are synchronous, carry out flow rate test.
The pad value of step 4:CPU control system control attenuation network increases gradually, detects the flow performance performance of power line communications apparatus under the differential declines environment with this.
Step 5: when attenuation network increases pad value gradually, adopt signal test system to carry out flow rate test.
Step 6: when the pad value of attenuation network reaches 60dB, finish test job.
Compared with prior art, PLC automated test device of the present invention is by the actual signal transmission environment of attenuation network simulation, and the means of testing by automation is to the PLC testing equipment, verifies workload and testing time the early stage that has reduced PLC equipment.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention does, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (5)
1. PLC automated test device, it is characterized in that, comprise power input interface, first signal isolation system, first data input/output interface, the first high pressure shielding system, the secondary signal shielding system, second data input/output interface, the second high pressure shielding system, attenuation network, Power Entry Module, system control cpu and signal test system, system control cpu is connected with attenuation network with Power Entry Module respectively, power input interface is connected with the secondary signal shielding system with first signal isolation system respectively, attenuation network is connected with the second high pressure shielding system with the first high pressure shielding system respectively, first data input/output interface is connected with the first high pressure shielding system with first signal isolation system respectively, second data input/output interface is connected with the second high pressure shielding system with the secondary signal shielding system respectively, and signal test system is used for connecting two PLC equipment to be measured of test.
2. PLC automated test device according to claim 1 is characterized in that, described first data input/output interface and second data input/output interface are respectively applied to be connected to two PLC equipment to be measured.
3. PLC automated test device according to claim 1 is characterized in that, described first signal isolation system and secondary signal shielding system are used for isolating the PLC network signal.
4. PLC automated test device according to claim 1 is characterized in that, the described first high pressure shielding system and the second high pressure shielding system are used for isolating the high-voltage signal of PLC signal.
5. PLC automated test device according to claim 1 is characterized in that, described attenuation network is used for the transmission environment of simulation PLC signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310223548.8A CN103281101B (en) | 2013-06-03 | 2013-06-03 | A kind of PLC automated test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310223548.8A CN103281101B (en) | 2013-06-03 | 2013-06-03 | A kind of PLC automated test device |
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| CN103281101A true CN103281101A (en) | 2013-09-04 |
| CN103281101B CN103281101B (en) | 2016-03-30 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104617984A (en) * | 2015-03-04 | 2015-05-13 | 深圳市汇思易达科技有限公司 | Test instrument for PLC (power line communication) or EoC (Ethernet over coax) |
| CN105024731A (en) * | 2015-08-26 | 2015-11-04 | 上海斐讯数据通信技术有限公司 | Power line network product test system |
| CN105307196A (en) * | 2015-09-25 | 2016-02-03 | 国网天津市电力公司 | Wireless public network communication testing system and method for acquisition terminal |
| CN107181504A (en) * | 2017-07-12 | 2017-09-19 | 武汉盛帆电子股份有限公司 | Power wire broadband carrier communication method of testing and device |
| CN114421996A (en) * | 2022-03-28 | 2022-04-29 | 欧智通科技股份有限公司 | Anti-attenuation test system of PLC signal |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110995314A (en) * | 2019-12-05 | 2020-04-10 | 国网天津市电力公司电力科学研究院 | Low-voltage broadband power line carrier communication comprehensive test system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104617984A (en) * | 2015-03-04 | 2015-05-13 | 深圳市汇思易达科技有限公司 | Test instrument for PLC (power line communication) or EoC (Ethernet over coax) |
| CN105024731A (en) * | 2015-08-26 | 2015-11-04 | 上海斐讯数据通信技术有限公司 | Power line network product test system |
| CN105307196A (en) * | 2015-09-25 | 2016-02-03 | 国网天津市电力公司 | Wireless public network communication testing system and method for acquisition terminal |
| CN105307196B (en) * | 2015-09-25 | 2018-11-06 | 国网天津市电力公司 | A kind of acquisition terminal wireless public network communication test system and method |
| CN107181504A (en) * | 2017-07-12 | 2017-09-19 | 武汉盛帆电子股份有限公司 | Power wire broadband carrier communication method of testing and device |
| CN107181504B (en) * | 2017-07-12 | 2019-08-30 | 武汉盛帆电子股份有限公司 | Power wire broadband carrier communication test method and device |
| CN114421996A (en) * | 2022-03-28 | 2022-04-29 | 欧智通科技股份有限公司 | Anti-attenuation test system of PLC signal |
| CN114421996B (en) * | 2022-03-28 | 2022-07-15 | 欧智通科技股份有限公司 | Anti-attenuation test system of PLC signal |
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| CN103281101B (en) | 2016-03-30 |
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