CN211509043U

CN211509043U - Compatibility test system of universal power supply to power line modem

Info

Publication number: CN211509043U
Application number: CN202020517974.8U
Authority: CN
Inventors: 覃炎明
Original assignee: Nibbit Electronic Technology Shenzhen Co ltd
Current assignee: Nibbit Electronic Technology Shenzhen Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2020-09-15
Anticipated expiration: 2030-04-09

Abstract

The utility model discloses a compatibility test system of universal power supply to electric cat, including a casing, first socket, second socket and third socket are established to the casing outside, install first electric cat on the first socket, install second electric cat on the second socket, first electric cat external first auxiliary test equipment that is used for surveying electric cat throughput, second electric cat external second auxiliary test equipment that is used for surveying electric cat throughput, install the power of being surveyed on the third socket, first socket and third socket electric connection; the shell is internally provided with a first filter connected with the first socket and a second filter connected with the third socket, and the first filter and the second filter are respectively connected with an attenuator through a coupling circuit. The utility model discloses technical scheme has realized the compatibility test of universal power supply to the electric power cat.

Description

Compatibility test system of universal power supply to power line modem

Technical Field

The utility model relates to a power line communication technical test field, in particular to compatibility test system of universal power supply to electric power cat.

Background

In an increasing number of locations, AC-DC universal switching power supplies (CPS) are used for data transmission via Power Line Technology (PLT), where the power line itself serves as the data transmission medium, using a spectral range in the range of 1.6M-100 MHz; as the electric cats become more widely used, the AC-DC universal switching power supply is connected to the power line, and these power supplies may seriously affect the data transmission of the electric cats, and in some cases, the influence of the "bad" switching power supply on the electric cats may reduce the transmission rate by 50%, or even more, and seriously affect the communication of the electric cats in the PLT channel bandwidth, but the prior art lacks a testing tool for the compatibility of the AC-DC universal switching power supply with the electric cats.

Accordingly, the prior art is deficient and needs improvement.

SUMMERY OF THE UTILITY MODEL

The utility model provides a compatible test system of universal power supply to electric power cat aims at realizing the compatibility test of universal power supply to electric power cat.

In order to achieve the above object, the utility model provides a compatibility test system of universal power supply to electric cat, including a casing, the casing outside is equipped with first socket, second socket and third socket, install first electric cat on the first socket, install second electric cat on the second socket, first electric cat external first auxiliary test equipment that is used for testing electric cat throughput, second electric cat external second auxiliary test equipment that is used for testing electric cat throughput, install the power supply under test on the third socket, first socket and third socket electric connection; the shell is internally provided with a first filter connected with the first socket and a second filter connected with the third socket, and the first filter and the second filter are respectively connected with an attenuator through a coupling circuit.

Preferably, the first auxiliary test device and the second auxiliary test device are both set as a PC computer, and test software for testing the throughput of the modem is built in the PC computer.

Preferably, the first filter and the second filter are both arranged as low-pass high-impedance filters.

Preferably, the attenuator is arranged as a coaxial adjustable or fixed attenuator.

Preferably, the housing is provided as an aluminium housing.

Preferably, the ground wires of the first socket, the second socket and the third socket are all connected with the shell.

Compared with the prior art, the beneficial effects of the utility model are that: through setting up a test system, conveniently realize the test of universal power supply to electric power cat compatibility to avoid when using electric power cat, not conform to the influence of compatible universal power supply to electric power cat data transmission.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of the testing system of the present invention;

FIG. 2 is a schematic circuit diagram of the test system of the present invention;

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The utility model provides a compatibility test system of universal power supply to electric power cat, refer to fig. 1, including a casing, the casing outside is equipped with first socket 11, second socket 12 and third socket 13, install first electric power cat 21 on the first socket 11, install second electric power cat 22 on the second socket 12, first electric power cat 21 external first auxiliary test equipment 31 that is used for testing electric power cat throughput, second electric power cat 22 external second auxiliary test equipment 32 that is used for surveying electric power cat throughput, install tested power supply 23 on the third socket 13, first socket 11 and third socket 13 electric connection; a first filter 41 connected with the first socket 11 and a second filter 42 connected with the third socket 13 are further arranged in the housing, and the first filter 41 and the second filter 42 are respectively connected with an attenuator 6 through a coupling circuit 5. Furthermore, the shell is an aluminum shell, so that the overall quality is reduced, the external interference shielding function is good, and the stability of the test system is improved. The ground wires of the first socket 11, the second socket 12 and the third socket 13 are all connected with the shell. It should be noted that the modem is used to modulate and demodulate the ethernet signal by the power line communication technology, so as to implement the transmission of the ethernet data on the power line.

Further, referring to fig. 2, the first filter 41 and the second filter 42 are each provided as a low-pass high-impedance filter. The low-pass high-impedance filter has high impedance to the communication bandwidth of the power modem from 1 MHz to 100MHz, reaches 160Db attenuation at 1.6MHz and is far larger than a set specific transmission channel (0-96 Db). The signals transmitted by the two power cats are difficult to pass through the filter and return to the other power cat pair, so that the communication data are mutually transmitted at the attenuator 6. Meanwhile, the low-pass high-impedance filter can make high-frequency interference noise of a power line outside the test system difficult to enter the test system to influence power modem communication, and test stability is guaranteed.

Further, the coupling circuit 5 may convert a transmission signal on the power line into a coaxial wire signal. Any one of the coupling circuits 5 comprises two coupling capacitors for blocking low frequency and high frequency, and a signal isolation coupler. There is a high attenuation at low frequencies, i.e. power line frequencies 50Hz and 60Hz, and an attenuation of 81dB at 60 Hz. But in the power cat communication band, the attenuation is very low. Above 1.6MHz, the attenuation is small by 0.7dB, and the influence on the test is small.

Further, the attenuator 6 is arranged as a coaxial adjustable or fixed attenuator. The maximum throughput of data transmission for two power cats at the set attenuation level can be tested by adjusting the attenuator 6. After passing through the coupling circuit 5, the power line signal can be connected with the attenuator 6 through an SMA interface, a coaxial line or a PCB circuit board.

Further, the first auxiliary testing device 31 and the second auxiliary testing device 32 are both configured as PC computers, and the PC computers are internally provided with testing software for testing the throughput of the modem.

In the test process, the tested power supply 23 is not accessed, the maximum throughputs of the two power cats are tested, data are recorded, the tested power supply 23 is inserted into the third socket 13, the maximum throughputs of the two power cats are tested, the maximum throughputs of the two power cats are compared with the data which are not inserted into the tested power supply 23, the reduction rate of the data transmission rate is calculated, the compatibility test of the tested power supply 23 on the power cats can be achieved, and the tested power supply 23 which does not conform to compatibility is screened out.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. The system for testing the compatibility of the universal power supply to the power modem is characterized by comprising a shell, wherein a first socket, a second socket and a third socket are arranged on the outer side of the shell, a first power modem is installed on the first socket, a second power modem is installed on the second socket, the first power modem is externally connected with first auxiliary test equipment for testing the throughput of the power modem, the second power modem is externally connected with second auxiliary test equipment for testing the throughput of the power modem, a tested power supply is installed on the third socket, and the first socket is electrically connected with the third socket; the shell is internally provided with a first filter connected with the first socket and a second filter connected with the third socket, and the first filter and the second filter are respectively connected with an attenuator through a coupling circuit.

2. The system for testing compatibility of a universal power supply with a modem as claimed in claim 1, wherein the first auxiliary testing device and the second auxiliary testing device are both configured as PC computers, and the PC computers have testing software built therein for testing throughput of the modem.

3. The universal power supply compatibility testing system for power cats according to claim 1, wherein the first filter and the second filter are each configured as a low-pass high-impedance filter.

4. The universal power supply compatibility testing system for power cats according to claim 1, wherein said attenuator is configured as a coaxial line adjustable or fixed attenuator.

5. The universal power supply compatibility testing system for power cats according to claim 1, wherein said housing is configured as an aluminum housing.

6. The system for testing compatibility of a universal power supply to a power cat of claim 5 wherein the ground wires of the first, second and third outlets are all connected to the housing.