CN203688694U - Serial port connecting line detection circuit - Google Patents
Serial port connecting line detection circuit Download PDFInfo
- Publication number
- CN203688694U CN203688694U CN201320892082.6U CN201320892082U CN203688694U CN 203688694 U CN203688694 U CN 203688694U CN 201320892082 U CN201320892082 U CN 201320892082U CN 203688694 U CN203688694 U CN 203688694U
- Authority
- CN
- China
- Prior art keywords
- serial port
- power supply
- port connecting
- conducting
- connecting wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses a serial port connecting line detection circuit. The serial port connecting line detection circuit comprises a power supply, a conduction indication unit, a serial port line socket and a button switch unit. The serial port line socket comprises a serial port male base and a serial port female base, the power supply is connected with the serial port male base via the conduction indication unit, and the serial port female base is connected with the earth via the button switch unit. The serial port connecting line detection circuit of the utility model comprises the button switch unit and the conduction indication unit, determines the type of a serial port connecting line by the relationship of the button switch unit and the conduction indication unit, does not need manpower to operate a multimeter to detect and determine, is fast in identification speed and high in detection efficiency and accuracy, and can be widely used in the electronic equipment detection technology field.
Description
Technical field
The utility model relates to a kind of electronic equipment detection technique field, especially a kind of serial port connecting wire testing circuit.
Background technology
Serial line interface is called for short serial ports, also claims serial communication interface (being often referred to com interface), is the expansion interface that adopts serial communication mode; Serial line interface divides and comprises RS-232-C, RS-422, RS-485 etc. by electrical standard and agreement, current more employing RS-232 communication serial port, and conventional serial ports has 9 needle serial ports (DB9) and 25 needle serial ports (DB25).9 needle serial ports (DB9) pin 2(RD) be to receive data, pin 3(TD) be to send data, pin 5 is signal ground.
Serial ports connects by serial port connecting wire, between different serial ports, communicate the quantity of required serial port connecting wire and the connected mode that adopts different.That common serial port connecting wire type (comprising the quantity of serial port connecting wire and the connected mode adopting thereof) has is direct-connected, cross connection and spininess pin interconnect these 3 kinds, as Figure 1-3.Fig. 1 is direct-connected serial port connecting wire, needs 3 connecting lines; Fig. 2 is cross connection serial port connecting wire, needs 3 connecting lines; Fig. 3 is spininess pin interconnection serial port connecting wire, needs 8 connecting lines, has also adopted cross-coupled mode.Therefore, before using serial ports to communicate, need to detect the type of required Serial Port Line, need to adopt which kind of serial port connecting wire to determine.
At present, in the industry the type of required Serial Port Line being detected to adopted method is: first operate universal electric meter by professional and detect one by one Serial Port Line stitch resistance, then determine the type of serial port connecting wire according to the stitch resistance of measuring.This mode, slow to the recognition speed of serial port connecting wire type, detection efficiency is low and cannot avoid operating mistake and the personal error in universal electric meter process, and accuracy is not high.
Utility model content
In order to solve the problems of the technologies described above, the purpose of this utility model is: the serial port connecting wire that a kind of recognition speed is fast, detection efficiency is high and accuracy is high testing circuit is provided.
The utility model solves the technical scheme that its technical matters adopts: a kind of serial port connecting wire testing circuit, comprise power supply, conducting indicating member, Serial Port Line socket and toggle switch unit, described Serial Port Line socket comprises serial ports male seat and serial ports female seat, described power supply is connected by conducting indicating member and then with serial ports male seat, and described serial ports female seat is passed through toggle switch unit and then is connected with the earth.
Further, described serial ports male seat is provided with 9 male seat sockets, and described conducting indicating member comprises 9 sub-display units that are connected in parallel between male seat socket and power supply; Described sub-display unit comprises conducting pilot lamp and conducting current-limiting resistance, and described power supply is connected with conducting current-limiting resistance and then with corresponding male seat socket by conducting pilot lamp successively.
Further, described serial ports female seat is provided with 9 female seat sockets, and described toggle switch unit is made up of 9 miniature toggle switchs that are connected in parallel between female seat socket and the earth.
Further, described conducting pilot lamp is yellow light-emitting diode.
Further, also comprise power supply access pilot lamp and current-limiting resistance, described power supply is accessed current-limiting resistance with power supply access pilot lamp and then is connected with the earth by power supply successively.
Further, described power supply access pilot lamp is green LED.
The beneficial effects of the utility model are: comprise toggle switch unit and conducting indicating member, utilize the relation of toggle switch unit and conducting indicating member to judge the type of serial port connecting wire, detect and judgement without manual operation universal electric meter, recognition speed is fast, and detection efficiency is high and accuracy is high.
Brief description of the drawings
Below in conjunction with Figure of description and embodiment, the utility model is described in further detail.
Fig. 1 is prior art one of the present utility model;
Fig. 2 is prior art two of the present utility model;
Fig. 3 is prior art three of the present utility model;
Fig. 4 is the circuit theory diagrams of a kind of serial port connecting wire testing circuit of the utility model.
Reference numeral: 1～9, male seat socket; 1 '～9 ', female seat socket; S1～S9, miniature toggle switch; VD1～VD9, conducting pilot lamp; R1～R9, conducting current-limiting resistance; VD10, power supply access pilot lamp; R10, power supply access current-limiting resistance; S10, power switch.
Embodiment
With reference to Fig. 4, a kind of serial port connecting wire testing circuit, comprise power supply, conducting indicating member, Serial Port Line socket and toggle switch unit, described Serial Port Line socket comprises serial ports male seat and serial ports female seat, described power supply is connected by conducting indicating member and then with serial ports male seat, and described serial ports female seat is passed through toggle switch unit and then is connected with the earth.
Wherein, serial ports female seat, for connecing the input end of serial port connecting wire; Serial ports male seat, for connecing the output terminal of serial port connecting wire.The utility model adds voltage from the input end of serial port connecting wire one by one, indicates the position of output voltage at output terminal by conducting indicating member, and according to the position of instruction output voltage, the position with reference to connecting line is judged.
Be further used as preferred embodiment, described serial ports male seat is provided with 9 male seat sockets 1～9, and described conducting indicating member comprises 9 sub-display units that are connected in parallel between male seat socket 1～9 and power supply; Described sub-display unit comprises conducting pilot lamp VD1～VD9 and conducting current-limiting resistance R1～R9, and described power supply is connected with conducting current-limiting resistance R1～R9 and then with corresponding male seat socket 1～9 by conducting pilot lamp VD1～VD9 successively.
Wherein, be connected with corresponding male seat socket 1～9, refer to, resistance R 1 is connected with male seat socket 1, resistance R 2 is connected with male seat socket 2, resistance R 3 is connected with male seat socket 3, and resistance R 4 is connected with male seat socket 4, and resistance R 5 is connected with male seat socket 5, resistance R 6 is connected with male seat socket 6, resistance R 7 is connected with male seat socket 7, and resistance R 8 is connected with male seat socket 8, and resistance R 9 is connected with male seat socket 9.
Be further used as preferred embodiment, described serial ports female seat is provided with 9 female seat sockets 1 '～9 ', and described toggle switch unit is made up of 9 miniature toggle switch S1～S9 that are connected in parallel between female seat socket 1 '～9 ' and the earth.
Wherein, microswitch S1 is connected in parallel between female seat socket 1 ' and the earth, microswitch S2 is connected in parallel between female seat socket 2 ' and the earth, microswitch S3 is connected in parallel between female seat socket 3 ' and the earth, microswitch S4 is connected in parallel between female seat socket 4 ' and the earth, microswitch S5 is connected in parallel between female seat socket 5 ' and the earth, microswitch S6 is connected in parallel between female seat socket 6 ' and the earth, microswitch S7 is connected in parallel between female seat socket 7 ' and the earth, microswitch S8 is connected in parallel between female seat socket 8 ' and the earth, microswitch S9 is connected in parallel between female seat socket 9 ' and the earth.
Miniature toggle switch S1～S9 of the present utility model is in normally off, for testing the conducting state of serial port connecting wire.
Be further used as preferred embodiment, described conducting pilot lamp VD1～VD9 is yellow light-emitting diode.
Be further used as preferred embodiment, also comprise power supply access pilot lamp VD10 and power supply access current-limiting resistance R10, described power supply is accessed current-limiting resistance R10 with power supply access pilot lamp VD10 and then is connected with the earth by power supply successively.
Be further used as preferred embodiment, described power supply access pilot lamp VD10 is green LED.
Below in conjunction with Figure of description and specific embodiment, the utility model is described in further detail.
With reference to Fig. 4, the utility model the first embodiment:
The utility model by switch S 1～S9 to serial port connecting wire input+5V voltage, if in Yellow luminous pipe VD1～VD9, have three luminous, connected mode is direct-connected or cross connection; If in VD1～VD9, have eight luminous, connected mode is spininess pin interconnection.
Turn-off S2, if VD2 extinguishes, connected mode is direct-connected; Turn-off S2, if VD3 extinguishes, connected mode is cross connection.
Debug process of the present utility model is as follows:
After circuit connection is errorless, access+5V direct supply, checks whether power supply access instruction VD10 lights.If VD10 lights, show that power supply access is normal; Otherwise, check that whether power supply access is good and whether VD10 interlock circuit is correct.
Then, on male and female socket, insert respectively master-slave socket, find two stitch that plug number is corresponding.With the corresponding stitch of pen meter of universal meter short circuit, check whether stitch number corresponding Yellow luminous pipe is lighted, represent that if light luminotron normally works; Otherwise, check that whether the interlock circuit of luminotron is correct.
Using method of the present utility model is as follows:
First, access+5V direct supply, switch switches on power after power light VD10 lights.
Then, Serial Port Line to be measured is inserted in male and female socket, judge the radical of connecting line according to the Yellow luminous pipe number of lighting.
Finally, stopcock S1～S9 as required, the position of the LED lamp that observation is extinguished, judges that Serial Port Line is direct-connected or intersects.
The utlity model has following characteristics:
(1) with 9 light emitting diodes respectively as the conducting instruction of 9 wires in serial port connecting wire, and light emitting diode is by number sequence of the stitch of Serial Port Line socket (be R1 meet 1, R2 meet 2, R3 and meet 3, R4 and meet 4, R5 and meet 5, R6 and meet 6, R7 and meet 7, R8 and meet 8, R9 and connect 9).
(2) with 9 miniature toggle switchs respectively as the test component of 9 wires in serial port connecting wire, and miniature toggle switch by number sequence of the stitch of Serial Port Line socket, (be that S1 connects 1 ', S2 connects 2 ', and S3 connects 3 ', S4 connects 4 ', and S5 connects 5 ', and S6 connects 6 ', S7 connects 7 ', and S8 connects 8 ', and S9 connects 9 ').
(3) utilize the relation between the toggle switch sequence number of connecting and the light emitting diode sequence number of lighting, judge the stitch wiring type of serial port connecting wire:
If the two sequence number is identical, the stitch wiring type of serial port connecting wire is direct-connected; If the two sequence number difference, the stitch wiring type of serial port connecting wire is cross connection; If multiple light emitting diodes are lighted simultaneously, the stitch wiring type of serial port connecting wire is the interconnection of light-emitting diodes pipe end spininess pin; If multiple toggle switchs are lighted same light emitting diode, the stitch wiring type of serial port connecting wire is the interconnection of toggle switch end spininess pin.
(4) can utilize light emitting diode whether to light, judge the stitch wiring quality of serial interface cable connection:
If the light emitting diode that should light is lighted, show that stitch wiring is normal; If the light emitting diode that should light does not work, show to exist open circuit or Miswire.
If the light emitting diode that should not light is lighted, show stitch wiring short circuit or Miswire; If the light emitting diode that should not light does not work, show that stitch wiring is normal.
(5) used light safe acrylic board shell, panel layout is designed with and is beneficial to operation and observes, and with operation instructions.
Compared with prior art, the utlity model has following advantage:
A. operating personnel is freed from the backward hard work of operation universal electric meter detection Serial Port Line stitch resistance, improved the recognition speed of Serial Port Line type and the accuracy of detection;
B. the judgement speed of Serial Port Line quality and the accuracy of detection have been improved;
C. avoided mistake and personal error in manual operation universal electric meter process completely, accuracy is high;
D. detection method is simple, visual result, and efficiency is high.
More than that better enforcement of the present utility model is illustrated, but the utility model is created and is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and the distortion that these are equal to or replacement are all included in the application's claim limited range.
Claims (6)
1. a serial port connecting wire testing circuit, it is characterized in that: comprise power supply, conducting indicating member, Serial Port Line socket and toggle switch unit, described Serial Port Line socket comprises serial ports male seat and serial ports female seat, described power supply is connected by conducting indicating member and then with serial ports male seat, and described serial ports female seat is passed through toggle switch unit and then is connected with the earth.
2. a kind of serial port connecting wire testing circuit according to claim 1, it is characterized in that: described serial ports male seat is provided with 9 male seat sockets (1～9), described conducting indicating member comprises 9 sub-display units that are connected in parallel between male seat socket (1～9) and power supply; Described sub-display unit comprises conducting pilot lamp (VD1～VD9) and conducting current-limiting resistance (R1～R9), and described power supply is connected with conducting current-limiting resistance (R1～R9) and then with corresponding male seat socket (1～9) by conducting pilot lamp (VD1～VD9) successively.
3. a kind of serial port connecting wire testing circuit according to claim 2, it is characterized in that: described serial ports female seat is provided with 9 female seat sockets (1 '～9 '), described toggle switch unit is made up of 9 miniature toggle switchs (S1～S9) that are connected in parallel between female seat socket (1 '～9 ') and the earth.
4. a kind of serial port connecting wire testing circuit according to claim 3, is characterized in that: described conducting pilot lamp (VD1～VD9) is yellow light-emitting diode.
5. according to a kind of serial port connecting wire testing circuit described in claim 1-4 any one, it is characterized in that: also comprise power supply access pilot lamp (VD10) and power supply access current-limiting resistance (R10), described power supply is accessed current-limiting resistance (R10) with power supply access pilot lamp (VD10) and then is connected with the earth by power supply successively.
6. a kind of serial port connecting wire testing circuit according to claim 5, is characterized in that: described power supply access pilot lamp (VD10) is green LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320892082.6U CN203688694U (en) | 2013-12-31 | 2013-12-31 | Serial port connecting line detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320892082.6U CN203688694U (en) | 2013-12-31 | 2013-12-31 | Serial port connecting line detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203688694U true CN203688694U (en) | 2014-07-02 |
Family
ID=51010579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320892082.6U Expired - Fee Related CN203688694U (en) | 2013-12-31 | 2013-12-31 | Serial port connecting line detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203688694U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356804A (en) * | 2016-11-07 | 2017-01-25 | 福建实达电脑设备有限公司 | Module with short circuit protection function for serial port and method |
| CN106528476A (en) * | 2016-11-24 | 2017-03-22 | 微鲸科技有限公司 | Circuit capable of automatically realizing cross and direct connection serial port switching |
| CN107704415A (en) * | 2017-11-06 | 2018-02-16 | 郑州华力信息技术有限公司 | Simple RS232 multifunctional serial port expanding units |
| CN111521956A (en) * | 2019-02-04 | 2020-08-11 | 发那科株式会社 | System for controlling a power supply |
-
2013
- 2013-12-31 CN CN201320892082.6U patent/CN203688694U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356804A (en) * | 2016-11-07 | 2017-01-25 | 福建实达电脑设备有限公司 | Module with short circuit protection function for serial port and method |
| CN106528476A (en) * | 2016-11-24 | 2017-03-22 | 微鲸科技有限公司 | Circuit capable of automatically realizing cross and direct connection serial port switching |
| CN107704415A (en) * | 2017-11-06 | 2018-02-16 | 郑州华力信息技术有限公司 | Simple RS232 multifunctional serial port expanding units |
| CN111521956A (en) * | 2019-02-04 | 2020-08-11 | 发那科株式会社 | System for controlling a power supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203688694U (en) | Serial port connecting line detection circuit | |
| CN101598759B (en) | Method for detecting electric connectors of satellite ground power supply and distribution test equipment | |
| CN207502659U (en) | A kind of FPC connector LTU line test unit | |
| CN206440789U (en) | Cable detection device | |
| CN205427089U (en) | Cable switches on insulation test device | |
| CN202421400U (en) | Checking tool for connection of multicore flat cables | |
| CN204177908U (en) | Multifunctional line measurement instrument | |
| CN205450164U (en) | Pencil break -make detects frock | |
| CN203881894U (en) | Elevator traveling electric cable detection apparatus | |
| CN205958686U (en) | Wiring detection circuit | |
| CN210051878U (en) | BMS wire harness detection circuit | |
| CN210119553U (en) | Detection apparatus for whether short circuit exists between each pin of DB plug | |
| CN210465652U (en) | Portable multi-interface communication cable testing tool | |
| CN101963641A (en) | Conductor bundle detection system | |
| CN201527458U (en) | Conductor bundle detecting device | |
| CN106597201B (en) | A kind of test method of quick connector, cable | |
| CN207488412U (en) | A kind of Beam Detector | |
| CN110780238A (en) | Multi-core cable detection device | |
| CN203909180U (en) | CAN bus terminal resistance detection device | |
| CN201170796Y (en) | Tool for detecting connector | |
| CN207817172U (en) | A kind of battery sampling wiring harness test device | |
| CN202305718U (en) | Batch test device of conductive connection wire | |
| CN203084132U (en) | Cable short circuit detection device | |
| GB2527310A (en) | Patchmate cable tracer and continuity tester | |
| CN104422844A (en) | Aviation plug interface test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20211231 |