CN220323395U - DTU test fixture - Google Patents

Abstract

The utility model discloses a DTU (digital television) testing tool which comprises an upper computer and a PCB (printed circuit board); and a power module, a remote signaling detection module, a remote control detection module and a remote detection module for supplying power to the equipment to be detected are arranged on the PCB. The remote signaling detection module comprises a plurality of groups of remote signaling detection rocker switches and a plurality of groups of matched feeder lines, the remote control detection module comprises a plurality of groups of LED remote control indicator lamps, and the remote sensing detection module comprises a plurality of banana plugs; the banana plugs are sequentially connected with a plurality of public ports of the external relay protector. When the utility model is specifically operated, a user operates each rocker switch, namely, analog quantities such as a remote sensing signal, a remote signaling signal, a remote control signal and the like are manually accessed, the detection of the DTU to be detected is realized through the analysis of the upper computer, the wiring of the switch cabinet is not needed when the DTU is tested, the work of a terminal wiring part can be effectively reduced, the secondary wiring workload is reduced, and the working efficiency is improved.

Description

DTU test fixture

Technical Field

The utility model relates to the technical field of debugging, in particular to a DTU test fixture.

Background

Currently, with rapid development of power grids, in smart grid construction, the number of distribution automation terminals is increasing. The early test process mainly uses manual operation, has low safety, high equipment management cost and long reaction treatment time.

The existing DTU factory detection mainly detects through a mode of manual wiring and relay protection instrument, repeated manual wiring detection of a loop by a tester is needed during detection, so that the work efficiency of the tester is low, the production progress is affected, the production cost of a company is increased intangibly, moreover, due to too many detection projects, the condition of missing detection and false detection is possibly caused during manual detection, the operation failure rate of field equipment is increased, the later maintenance cost is increased, in addition, the professional skill requirement of the manual wiring detection on a technician is higher, the workload of manual wiring is increased along with the increase of the later DTU function, and the time cost of the test is further increased.

Disclosure of Invention

In order to solve the technical problems in the background art, the utility model provides a DTU test fixture.

The utility model adopts the following technical scheme: a DTU test fixture comprises an upper computer and a PCB (printed circuit board); the PCB is provided with a power module, a remote signaling detection module, a remote control detection module and a remote detection module which are used for supplying power to equipment to be detected; the upper computer is respectively connected with the remote signaling detection module, the remote control detection module and the remote detection module;

the power module comprises a power supply rocker switch and a plug-in wiring terminal; the plug-in wiring terminal is used for being connected with the power input end of the DTU to be tested through a spring probe;

the remote signaling detection module comprises a plurality of groups of remote signaling detection rocker switches and a plurality of groups of feeder lines which are connected in a matched manner; the multiple groups of feeder lines are sequentially connected with remote signaling feeder line interfaces of the DTU to be tested through spring probes;

the remote control detection module comprises a plurality of groups of LED remote control indicator lamps; the multiple groups of LED remote control indicator lamps are connected with the relay groups of the DTU to be tested through spring probes;

the telemetry detection module comprises a plurality of banana plugs; the banana plugs are sequentially connected with a plurality of public ports of the external relay protector and are used for connecting remote signaling feeder interfaces of the DTU to be tested through the spring probes so as to send out voltage/current signals.

Further, the banana plug comprises ten banana plugs, and the banana plugs are sequentially connected with a zero sequence voltage, a zero sequence voltage common terminal, a phase voltage common terminal, a C phase voltage port, a B phase voltage port, an A phase voltage port, a C phase current port, a B phase current port, an A phase current port and a phase current common terminal of the external relay protection instrument.

The serial port detection module comprises a plurality of serial port detection rocker switches, a first needle-shaped wiring terminal and a second needle-shaped wiring terminal; the first needle-shaped wiring terminal is connected with the serial port of the DTU to be tested through a wire; the second needle-shaped wiring terminal is connected with the upper computer.

Further, the battery detection module is connected with the upper computer and comprises a third needle-shaped wiring terminal; and the third needle-shaped wiring terminal is connected with the battery output end of the DTU to be tested through a spring probe.

Compared with the prior art, the utility model has the advantages that: according to the DTU testing tool designed by the utility model, when the DTU testing tool is specifically operated, a user operates each rocker switch, namely, analog quantities such as a remote measurement signal, a remote signaling signal and a remote control signal are manually accessed, and the detection of the DTU to be tested is realized through the analysis of an upper computer, so that the wiring of a switch cabinet is not required when the DTU is tested, the work of a terminal wiring part can be effectively reduced, and the secondary wiring workload is reduced. Meanwhile, the tool can be directly used for DTU function test without power failure detection, so that the power failure time can be effectively reduced, a fault module can be rapidly positioned, and the working efficiency is improved.

Drawings

FIG. 1 is an overall frame diagram of a DTU test fixture of the present utility model;

fig. 2 is a schematic diagram of the overall structure of the DTU test tool of the present utility model;

fig. 3 is a circuit diagram of the DTU test fixture of the present utility model.

Wherein:

the power supply rocker switch, a 2-plug type wiring terminal, a 3-remote signaling detection rocker switch, a 4-feeder, a 5-LED remote control indicator lamp, a 6-banana plug, a 7-serial port detection rocker switch, an 8-first pin-shaped wiring terminal, a 9-second pin-shaped wiring terminal and a 10-third pin-shaped wiring terminal.

Detailed Description

In the following, in order to facilitate the understanding of the technical solutions of the present utility model by a person skilled in the art, reference will be made to the accompanying drawings for further description. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model.

In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the utility model. It may be evident, however, that one or more embodiments may be practiced without these specific details. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.

Fig. 1 is a schematic diagram of an overall frame diagram and an overall structure of a DTU test tool according to the present utility model, where the tool at least includes an upper computer and a PCB; the PCB is provided with a power module, a remote signaling detection module, a remote control detection module and a remote detection module which are used for supplying power to the equipment to be detected; the upper computer is respectively connected with the remote signaling detection module, the remote control detection module and the remote measurement detection module.

As shown in fig. 2 and fig. 3 in area one, in this embodiment, the power module includes a power supply rocker switch 1 and a plug-in connection terminal 2, where the plug-in connection terminal 2 is used to connect with a power input end of a DTU to be tested through a spring probe and is used to supply power to the DTU to be tested.

As shown in fig. 2 and fig. 3 in the fifth area, the remote signaling detection module includes a plurality of groups of remote signaling detection rocker switches 3 and a plurality of groups of feeder lines 4 connected in a matched manner, and the plurality of groups of feeder lines 4 are sequentially connected with remote signaling feeder line interfaces of the DTU to be detected through spring probes. As shown in the figure, in this embodiment, the remote signaling detection module is provided with three feeder switches, each feeder switch monitors two feeder signals, and when the signals are received, the remote signaling point of the upper computer is set to be 1.

As shown in fig. 2 and fig. 3, the remote control detection module includes a plurality of groups of LED remote control indicator lamps 5, the plurality of groups of LED remote control indicator lamps 5 are connected with the relay group of the DTU to be detected through the spring probe, the LED remote control indicator lamp 5 group includes a traffic light, if the upper computer detects that the relay of the DTU to be detected works normally, a green light is displayed, otherwise a red light is displayed.

As shown in fig. 2 and fig. 3 in the second area, the telemetry detection module includes a plurality of banana plugs 6, and the plurality of banana plugs 6 are sequentially connected with a plurality of public ports of the external relay protector, and are used for being connected with a telemetry feeder interface of the DTU to be detected through a spring probe so as to send out voltage/current signals. The relay protection instrument transmits the electric signal to the telemetry detection module, the telemetry detection module transmits the electric signal to the DTU to be detected, and the DTU to be detected transmits the electric signal to the upper computer for analysis. As shown IN fig. 3, IN the implementation, the banana plug 6 includes ten kinds of banana plugs, and is sequentially connected to a zero sequence voltage UZN, a zero sequence voltage common terminal UZ, a phase voltage common terminal UN, a C phase voltage port UC, a B phase voltage port UB, an a phase voltage port UA, a C phase current port IC, a B phase current port IB, an a phase current port IA, and a phase current common terminal IN of the external relay protection device.

In addition, in this embodiment, the serial port detection module further includes a serial port detection rocker switch 7, a first pin-shaped wiring terminal 8, and a second pin-shaped wiring terminal 9, as shown in fig. 2 and fig. 3, and the serial port detection module includes a plurality of serial port detection rocker switches, the first pin-shaped wiring terminal 8 is connected with the serial port of the DTU to be detected through a wire, and the second pin-shaped wiring terminal 9 is connected with the upper computer. As shown in the figure, the two serial port detection rocker switches 7 respectively control four serial ports, so that only one serial port can be tested.

In some embodiments, as shown in fig. 2 and fig. 3 in a sixth area, the tool further comprises a battery detection module connected with the upper computer, the battery detection module comprises a third pin-shaped wiring terminal 10, and the third pin-shaped wiring terminal 10 is connected with a battery output end of the DTU to be tested through a spring probe.

In summary, in the DTU test tool designed in the utility model, during specific operation, a user operates each rocker switch, that is, manually accesses analog quantities such as a telemetry signal, a remote signaling signal, a remote control signal and the like, and through analysis of an upper computer, detection of the DTU to be tested is realized, and wiring of a switch cabinet is not needed during testing of the DTU, so that the work of a terminal wiring part can be effectively reduced, and the workload of secondary wiring is reduced. Meanwhile, the tool can be directly used for DTU function test without power failure detection, so that the power failure time can be effectively reduced, a fault module can be rapidly positioned, and the working efficiency is improved.

The above examples are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.

Claims (4)

1. The DTU testing tool comprises an upper computer and is characterized by also comprising a PCB; the PCB is provided with a power module, a remote signaling detection module, a remote control detection module and a remote detection module which are used for supplying power to equipment to be detected; the upper computer is respectively connected with the remote signaling detection module, the remote control detection module and the remote detection module; the power module comprises a power supply rocker switch (1) and a plug-in wiring terminal (2); the plug-in wiring terminal (2) is used for being connected with the power input end of the DTU to be tested through a spring probe; the remote signaling detection module comprises a plurality of groups of remote signaling detection rocker switches (3) and a plurality of groups of feeder lines (4) which are connected in a matched manner; the multiple groups of feeder lines (4) are sequentially connected with remote signaling feeder line interfaces of the DTU to be tested through spring probes; the remote control detection module comprises a plurality of groups of LED remote control indicator lamps (5); the multiple groups of LED remote control indicator lamps (5) are connected with the relay groups of the DTU to be tested through spring probes; the telemetry detection module comprises a plurality of banana plugs (6); the banana plugs (6) are sequentially connected with a plurality of public ports of an external relay protector and are used for being connected with a remote signaling feeder interface of the DTU to be tested through a spring probe so as to send out voltage/current signals.

2. The DTU test fixture according to claim 1, wherein the banana plugs (6) comprise ten banana plugs and are sequentially connected with a zero sequence voltage, a zero sequence voltage common terminal, a phase voltage common terminal, a C phase voltage port, a B phase voltage port, an a phase voltage port, a C phase current port, a B phase current port, an a phase current port and a phase current common terminal of the external relay protector.

3. The DTU test fixture according to claim 2, further comprising a serial port detection module, wherein the serial port detection module comprises a plurality of serial port detection rocker switches (7), a first pin-shaped wiring terminal (8) and a second pin-shaped wiring terminal (9); the first needle-shaped wiring terminal (8) is connected with the serial port of the DTU to be tested through a wire; the second needle-shaped wiring terminal (9) is connected with an upper computer.

4. The DTU test fixture according to claim 3, further comprising a battery detection module connected with the host computer, the battery detection module comprising a third pin terminal (10); and the third needle-shaped wiring terminal (10) is connected with the battery output end of the DTU to be tested through a spring probe.