CN208013339U

CN208013339U - Cable test device

Info

Publication number: CN208013339U
Application number: CN201820044503.2U
Authority: CN
Inventors: 魏文辉
Original assignee: Beijing Three Internet Technology Co Ltd
Current assignee: Beijing Sanqing Internet Technology Co ltd
Priority date: 2018-01-11
Filing date: 2018-01-11
Publication date: 2018-10-26
Anticipated expiration: 2028-01-11

Abstract

The utility model embodiment provides a kind of cable test device, it is related to electric system power supply and distribution technical field, the cable test device, including a plurality of types of cable sockets and multiple switch circuit, the switching circuit passes through microprocessor, test line control circuit is connect with the cable socket, the test line control circuit includes decoder and the relay circuit containing indicator light, the input terminal of the decoder is connect with the control terminal of the microprocessor, the output end of the decoder and the input terminal of driving chip connect, the output end of the driving chip is connect with the input terminal of the relay circuit containing indicator light, the output end of the relay circuit is connect with the cable socket.

Description

Cable test device

Technical field

The utility model is related to electric system power supply and distribution technical field more particularly to a kind of cable test devices.

Background technology

Distribution terminal FTU is the distribution automation remote terminal in conjunction with observing and controlling and defencive function, with Standard type load Switch or breaker, power transformer SPS composition complete set of equipments are mating, realize the judgement of fault section and are isolated, non-faulting area Section restores electricity；Also it can monitor that distribution is set in real time by Ethernet or built-in wireless communication module and backstage master station communication Standby and distribution line state, is remotely controlled the division of on-load switch or breaker, realizes the dynamic management of distribution network, reach reasonable Distribution load, the purpose of effective use of energy sources.The connection of distribution terminal and these equipment at present is completed by cable.

Cable will carry out electric appliance together with test as important connection equipment, producing in equipment installation.It is now logical Detection method needs two personnel with multimeter come the break-make of detection cable, and working efficiency is low, it is also difficult to ensure 100% not Error.This mode efficiency is low, of high cost.

Utility model content

The utility model embodiment provides a kind of cable test device, to solve detection method general in the prior art Need two personnel with multimeter come the break-make of detection cable, working efficiency is low, it is also difficult to ensure that 100% does not malfunction.This side Formula efficiency is low, problem of high cost.

The utility model embodiment provides a kind of cable test device, including a plurality of types of cable sockets and multiple Switching circuit, the switching circuit are connect by microprocessor, test line control circuit with the cable socket, the p-wire Control circuit includes decoder and the relay circuit containing indicator light, the input terminal of the decoder and the microprocessor Control terminal connection, the input terminal of the output end of the decoder and driving chip connects, the output end of the driving chip with The input terminal of the relay circuit containing indicator light connects, and the output end of the relay circuit connects with the cable socket It connects.

Further, the switching circuit includes button switch, one end of the button switch and the microprocessor I/O port connects, and the other end of the button switch is connected with ground capacity and ground resistance.

Further, be also associated with jtag interface on the microprocessor, the jtag interface and the microprocessor it Between be provided with pull-up resistor.

Further, the relay circuit includes relay, the input terminal of the relay and the driving circuit Output end connects, and the output end of the relay is connect by current-limiting resistance and indicator light with the cable socket.

Further, the startup selection pin of the microprocessor passes through resistance eutral grounding.

Further, be also associated with reset chip on the microprocessor, the reset chip and the microprocessor it Between be equipped with filter capacitor, decoupling capacitor and current-limiting resistance.

Further, be also associated with crystal oscillating circuit on the microprocessor, the crystal oscillating circuit include crystal oscillator, resistance and The both ends of capacitance, the crystal oscillator connect with the pin of the microprocessor and respectively by capacity earths, the resistance with it is described Crystal oscillator is in parallel.

Further, the cable socket, the indicator light and the switch are respectively positioned on test panel.

Further, the cable socket is to be inserted corresponding to 4 core plugs, 5 core plugs, 6 core plugs, 10 core plugs, 26 cores Head and network aviation plug.

The cable test device that the utility model embodiment provides passes through switching circuit, microprocessor and test line traffic control The cooperation of circuit processed realizes the automatic test of cable, improves production test efficiency, reduces cost of goods manufactured and management Cost.

Description of the drawings

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is Some embodiments of the utility model, for those of ordinary skill in the art, without creative efforts, Other drawings may also be obtained based on these drawings.

Fig. 1 is the circuit diagram for the cable test device that the utility model embodiment provides.

Fig. 2 is the circuit diagram of the switching circuit in the cable test device that the utility model embodiment provides；

Fig. 3 is the circuit diagram of the microprocessor in the cable test device that the utility model embodiment provides；

Fig. 4 is the connection circuit diagram of the driving chip in the cable test device that the utility model embodiment provides；

Fig. 5 is the circuit diagram of the relay circuit in the cable test device that the utility model embodiment provides.

Specific implementation mode

It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts belong to The range of the utility model protection.

Fig. 1 is the schematic diagram for the cable test device that the utility model embodiment provides；

As shown in Figure 1, a kind of cable test device that the utility model embodiment provides, including a plurality of types of cables Socket 1 and multiple switch circuit 2, the switching circuit 2 are inserted by microprocessor 3, test line control circuit 4 and the cable Seat 1 connects.The test line control circuit 4 includes decoder 41 and the relay circuit 43 containing indicator light 42, described to translate The input terminal of code device 41 is connect with the control terminal of the microprocessor 3, output end and the driving chip 44 of the decoder 41 Input terminal connects, and the output end of the driving chip 44 and the input terminal of the relay circuit 43 containing indicator light 42 connect It connects, the output end of the relay circuit 43 is connect with the cable socket 1.

Illustratively, include 16 button switch 2B1~3B3 in cable detecting device, pass through connector and connecting line It is connect with panel button.After button is pressed.As shown in Fig. 2, the circuit of SW1 2B1 illustrates operation principle, Test1 in figure Connecting line connects the I/O port of CPU, and the I/O port of CPU can detect the level state of the line.R69 is pull-up resistor, when button does not have When pressing, line Test1 is made to maintain high level state.SW1 is button connecting terminal, and both ends pass through connecting line and panel button two End is attached, and when button is not pressed, is in off state, short-circuit condition is in when button is pressed.C47 is filter in figure Wave capacitance, pressing and bounce moment for button filters interference signal.R80 is ground resistance, is act as in circuit turn-on rear defence Only electric current is excessive.When button is not pressed, because of the presence of pull-up resistor R69, signal wire Test1 maintains high level shape State is connected after button is pressed with ground resistance, and under the action of R80, signal wire Test1 is pulled low.When CPU's and Test1 When corresponding I/O port detects that signal is low level, it will know that corresponding button has been pressed.

Further, be also associated with jtag interface on the microprocessor, the jtag interface and the microprocessor it Between be provided with pull-up resistor.The startup selection pin of the microprocessor passes through resistance eutral grounding.It is also connected on the microprocessor There is reset chip, filter capacitor, decoupling capacitor and current-limiting resistance are equipped between the reset chip and the microprocessor.Institute It states and is also associated with crystal oscillating circuit on microprocessor, the crystal oscillating circuit includes crystal oscillator, resistance and capacitance, the both ends of the crystal oscillator It is connect respectively with the pin of the microprocessor and by capacity earth, the resistance is in parallel with the crystal oscillator.

Illustratively, as shown in figure 3, the control section that cpu circuit is system will after detecting that button is pressed Corresponding connecting line is connected, is detected.U5 is CPU in figure, and model STM32F105RCT6 is given birth to by STMicw Electronics Produce the microcontroller based on ARM Cortex-M3 kernels.This microcontroller have high-performance, low cost, low-power consumption insertion Formula application specially designs, and strong antijamming capability, securely and reliably.J2 is jtag interfaces, and the program for being mainly used for stm32 is burnt It writes and debugs, be connected with debugger by the interface and connection cables, carry out program burn writing and debugging.R9~R13 is pull-up Resistance pulls up ability for improving level, the effect of fixed level is also functioned in transition state.C22~C26 is STM32 electricity The decoupling capacitor in source, FB1~FB3 are magnetic bead, and number and analog power and ground are connected by the component, while connection Play the role of segmentation, while can be interfered with filter high-frequency.U6 chip models are IMP809, are reset chip.It act as in electricity Source correctly provides reliable and stable reset signal for stm32 after the power is turned on, and stm32 is allow correctly to work.C27 is going for the chip Coupling capacitance, C28 is the filter capacitor of the chip output, to filter interference signal, keeps signal output gentler, R14 is limited Leakage resistance prevents electric current excessive, reduces power consumption.CRY1 is crystal oscillator, and stable clock source is provided for system clock, with R15, C29 Crystal oscillating circuit is formed together with C30.R16 and R17 is the ground resistance for starting selection pin, the resistance and chip pin Pin60 (Boot0), Pin28 (Boot1) is connected, the other end ground connection, to by the clamping of the two Pin in low level.When STM32 starts, and Starting mode is selected by the level of the two pins, when the two pins are all low levels, just selects Start from internal flash.Test1~Test16 is used for detection panel button state.ON/OFF is for controlling relay, to control The connection status of p-wire processed.

Illustratively, line control circuit is tested, for the signal according to CPU, carries out the connection of p-wire, and pass through instruction Lamp is indicated.As shown in Figure 4 and Figure 5, U8 chips are 74HCT4514 decoder chips, according to ON/OFF_1~ON/OFF_ 4 signal, to determine the state of output end.Such as this four signals, when being all low, output end S0 output is height, other output ends All it is low, when ON/OFF_1 is high and other three tunnels are low, output end S1 is height, other are low.EN_RELAY is Enable Pin, Only when the pin is low, chip just works normally, which is controlled by CPU.U7 is chip ULN2803.The chip is up to woods Pause pipe integrated circuit, and to drive relay, input terminal to connect decoder, output end connects relay.LS27 is relay, is used The break-make of p-wire is controlled, R55 is current-limiting resistance, to current-limiting protection equipment, D9 is large-power light-emitting diodes, to face Plate indicates.It is illustrated, usually, is off between relay 3,4, when relay pin 2 receives closure with relay LS27 After signal, relay be closed, 3,4 pins be in connection status, if 2Z3 and 4Z3 lines are correct at this time, 12V power supplys with Under the action of resistance and light emitting diode, access is formed, indicator light will shine, and indicate that line connection is correct.

Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations； Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that： It still can be with technical scheme described in the above embodiments is modified, or is carried out to which part technical characteristic etc. With replacement；And these modifications or replacements, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution The spirit and scope of scheme.

Claims

1. a kind of cable test device, which is characterized in that described including a plurality of types of cable sockets and multiple switch circuit Switching circuit is connect by microprocessor, test line control circuit with the cable socket, and the test line control circuit includes Decoder and relay circuit containing indicator light, the input terminal of the decoder and the control terminal of the microprocessor connect It connects, the output end of the decoder and the input terminal of driving chip connect, and the output end of the driving chip contains finger with described Show that the input terminal connection of the relay circuit of lamp, the output end of the relay circuit are connect with the cable socket.

2. the apparatus according to claim 1, which is characterized in that the switching circuit includes button switch, and the button is opened One end of pass is connect with the I/O port of the microprocessor, and the other end of the button switch is connected with ground capacity and ground connection electricity Resistance.

3. the apparatus according to claim 1, which is characterized in that jtag interface is also associated on the microprocessor, it is described It is provided with pull-up resistor between jtag interface and the microprocessor.

4. the apparatus according to claim 1, which is characterized in that the relay circuit includes relay, the relay Input terminal connect with the output end of the driving circuit, the output end of the relay by current-limiting resistance and indicator light with The cable socket connection.

5. the apparatus according to claim 1, which is characterized in that the startup selection pin of the microprocessor is connect by resistance Ground.

6. the apparatus according to claim 1, which is characterized in that reset chip is also associated on the microprocessor, it is described Filter capacitor, decoupling capacitor and current-limiting resistance are equipped between reset chip and the microprocessor.

7. the apparatus according to claim 1, which is characterized in that crystal oscillating circuit is also associated on the microprocessor, it is described Crystal oscillating circuit includes crystal oscillator, resistance and capacitance, and the both ends of the crystal oscillator connect and led to the pin of the microprocessor respectively Capacity earth is crossed, the resistance is in parallel with the crystal oscillator.

8. the apparatus according to claim 1, which is characterized in that the cable socket, the indicator light and the switch It is respectively positioned on test panel.

9. according to claim 1-8 any one of them devices, which is characterized in that the cable socket be corresponding to 4 core plugs, 5 core plugs, 6 core plugs, 10 core plugs, 26 core plugs and network aviation plug.