CN2821694Y - Communication interface detector - Google Patents
Communication interface detector Download PDFInfo
- Publication number
- CN2821694Y CN2821694Y CN 200520059658 CN200520059658U CN2821694Y CN 2821694 Y CN2821694 Y CN 2821694Y CN 200520059658 CN200520059658 CN 200520059658 CN 200520059658 U CN200520059658 U CN 200520059658U CN 2821694 Y CN2821694 Y CN 2821694Y
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- China
- Prior art keywords
- circuit
- communication interface
- palm
- test circuit
- utility
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- Expired - Fee Related
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- Test And Diagnosis Of Digital Computers (AREA)
Abstract
The utility model discloses a communication interface testing instrument. The utility model aims to provide a suitable, convenient and universal communication interface testing instrument. The utility model comprises a palm computer (1) and a testing circuit (2), wherein the testing circuit (2) is respectively and electrically connected with the palm computer (1) and a tested communication interface; the testing circuit (2) comprises an RS232/TTL switching circuit (3), a CS current loop testing circuit (4), a power supply changeover circuit (5) and an RS485 testing circuit (6); the implementation of testing operation is operated through an operation interface of application software installed in the palm computer (1). The utility model is supplied by means of batteries arranged in the palm computer and does not use an external power supply, so the utility model is convenient in carrying; besides, the utility model is particularly suitable for the requirements of field testing and has the advantages of convenient operation and high work efficiency.
Description
Technical field
The utility model relates to a kind of communication interface testing tool.
Background technology
Intelligent equipment has been applied to every field more and more widely in current society, and the various intelligent equipments that move in a distributed system transmit, receive data by its communication interface.But, cause interface to exist certain link of hidden danger or communication path that fault has been arranged if frequently plug, transmission can't be carried out, equipment also just can't operate as normal.Because communication path relates to a lot of links such as concrete equipment, this makes and is difficult to the failure judgement point at the scene, thereby, under household condition do not see suitable, convenient, general instrumentation and solution at present in this work as yet often because of judging and handling failure occasions a delay.The utility model is to be designed to a kind of novel instrumentation with micro-computer technology and mechanics of communication, can address this problem easily with this instrument.
The utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of suitable, convenient, general communication interface testing tool is provided.
The technical scheme that the utility model adopted is: the utility model comprises palm PC and test circuit, described test circuit is electrically connected with described palm PC and tested communication interface respectively, and described test circuit comprises RS232/TTL change-over circuit, CS electric current loop test circuit, power-switching circuit, RS485 test circuit.
The input end of described power-switching circuit is connected with power supply in the described palm PC, and the output terminal of described power-switching circuit is connected with described test circuit.
Described palm PC is a suitable palmtop computer or by the ARM kernel that possesses the computer feature and the computer platform of operating system, described test circuit can be mounted on the PCB circuit board and be packaged in the housing and patch combination with described palm PC brick pattern again, also can be directly to be assembled into as a whole instrument and equipment with described palm PC.
The beneficial effects of the utility model are: because the utility model has adopted palm PC, test circuit and application software, described test circuit is electrically connected with described palm PC and tested communication interface respectively, described power-switching circuit in the described test circuit carries out the power supply in the described palm PC to offer described test circuit as working power after the voltage transitions, in order to support of the requirement of different tested interfaces to power supply, implementing test job is to operate by the application software interface of installing in the described palm PC, so the utility model very strong integrated portable instrument that is a kind of practicality, it is suitable to have, convenient, general, extendible advantage.
Description of drawings
Fig. 1 is the utility model circuit diagram.
Embodiment
As shown in Figure 1, the utility model comprises palm PC 1 and test circuit 2.Described palm PC 1 is a suitable palmtop computer or by the ARM kernel that possesses the computer feature and the computer platform of operating system; Described test circuit 2 can be mounted on the PCB circuit board and be packaged in the housing and patch combination with described palm PC 1 brick pattern again, also can be directly to be assembled into as a whole instrument and equipment with described palm PC 1; Described test circuit 2 is electrically connected with tested communication interface, and described test circuit 2 comprises RS232TTL change-over circuit 3, CS electric current loop test circuit 4, power-switching circuit 5, RS485 test circuit 6.
Described power-switching circuit 5 is that the power supply in the described palm PC 1 is carried out offering after the voltage transitions described test circuit 2 as working power, in order to support of the requirement of different tested interfaces to power supply, the input end of described power-switching circuit 5 is connected with power supply in the described palm PC 1, and the output terminal of described power-switching circuit 5 is connected with described test circuit 2.
Implementing in the test job is to operate by described palm PC 1 or by the application software operation interface of installing in the nuclear equipment in the ARM that possesses the computer feature.
Described RS232TTL change-over circuit 3 adopts MAX232A chip and circuit, described CS electric current loop test circuit 4 adopts three S9014 transistors and two PC817 photovalves to form CS electric current loop test circuit, described power-switching circuit 5 adopts NCPI403 chip and a crystal diode to form power-switching circuit, and described RS485 test circuit 6 adopts MAX489 chip and circuit.Certainly, physical circuit is not limited only to this type of type selecting.
The utility model is designed to a novel, portable instrument that practicality is very strong with micro-computer technology and electronic technology, comprised multiple communication protocol in the design, comprise IEC1107, LD/T645, EDMI etc., test operating procedure can select communication protocol setting interface that the communication interface of tested equipment is tested, testable communication interface mainly contains CS electric current loop, RS485, RS232 etc., the space that has expanded application simultaneously.
Test result provides with screen display, aural information on palm PC 1, by the clicking operation to the palm PC keyboard, can the quality of device talk interface be judged in no time, and the test report that simultaneously automatic generation can be filed is to be checked in the future.
The utility model utilizes the powered battery in the palm PC, and is easy to carry without external power supply, is particularly useful for the on-the-spot test demand, operate very easy, high efficiency.
On the operating system platform of palm PC, according to communication protocol (agreement) the requirement establishment testing software of different equipment under tests.These communication protocols are a kind of standards generally speaking, or the self-defined company standard of equipment producer.The communication standard of present patent application employing up to the present has:
EIA232-1991(RS232C)
EIA-RS485(RS485)
DL/T645-1997 multifunctional electric energy meter communication standard
IEC61107-1996?Data?exchange?for?metering?reading，tariff?and?loadcontrol-Direct?local?data?exchange
Design has 3 kinds of physical interfaces at test interface (conversion) circuit and CS electric current loop interface power supply circuit.
(R19, R20) with current-limiting resistance R5, the quiescent current control that makes the CS electric current loop is at 14-18mA by adjusting divider resistance in the debugging of this communication interface testing tool.
Claims (3)
1, a kind of communication interface testing tool, it is characterized in that: described communication interface testing tool comprises palm PC (1) and test circuit (2), described test circuit (2) is electrically connected with described palm PC (1) and tested communication interface respectively, and described test circuit (2) comprises RS232TTL change-over circuit (3), CS electric current loop test circuit (4), power-switching circuit (5), RS485 test circuit (6).
2, communication interface testing tool according to claim 1, it is characterized in that: the input end of described power-switching circuit (5) is connected with power supply in the described palm PC (1), and the output terminal of described power-switching circuit (5) is connected with described test circuit (2).
3, communication interface testing tool according to claim 1, it is characterized in that: described palm PC (1) is suitable palmtop computer or the computer platform of being made up of ARM kernel that possesses the computer feature and operating system, described test circuit (2) can be mounted on the PCB circuit board and be packaged in the housing and patch combination with described palm PC (1) brick pattern again, also can be the instrument and equipment that directly is assembled into as a wholeization with described palm PC (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520059658 CN2821694Y (en) | 2005-06-15 | 2005-06-15 | Communication interface detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520059658 CN2821694Y (en) | 2005-06-15 | 2005-06-15 | Communication interface detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2821694Y true CN2821694Y (en) | 2006-09-27 |
Family
ID=37018248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520059658 Expired - Fee Related CN2821694Y (en) | 2005-06-15 | 2005-06-15 | Communication interface detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2821694Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445601A (en) * | 2014-09-30 | 2016-03-30 | 株洲变流技术国家工程研究中心有限公司 | Current transformer interface testing device and method |
-
2005
- 2005-06-15 CN CN 200520059658 patent/CN2821694Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445601A (en) * | 2014-09-30 | 2016-03-30 | 株洲变流技术国家工程研究中心有限公司 | Current transformer interface testing device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHUHAI TESPRO AUTOMATION EQUIPMENT CO., LTD. Free format text: FORMER OWNER: ZHUHAI TRADING ELECTRON TECHNOLOGY CO., LTD. Effective date: 20121113 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHUHAI TRADING ELECTRON TECHNOLOGY CO., LTD. Free format text: FORMER NAME: DELI ELECTRONICS CO., LTD., ZHUHAI |
|
| CP03 | Change of name, title or address |
Address after: 519015 Guangdong province Zhuhai Jida Nanshan Industrial Zone Yongfa building room 407 Patentee after: ZHUHAI TRADING ELECTRON TECHNOLOGY Co.,Ltd. Address before: 519015 Guangdong province Jida Zhuhai Yongfa building 4F Patentee before: Zhuhai Deli Electronics Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20121113 Address after: 519015 Guangdong province Zhuhai Jida Nanshan Industrial Zone Yongfa building room 407 Patentee after: ZHUHAI TESPRO AUTOMATION EQUIPMENT CO.,LTD. Address before: 519015 Guangdong province Zhuhai Jida Nanshan Industrial Zone Yongfa building room 407 Patentee before: ZHUHAI TRADING ELECTRON TECHNOLOGY Co.,Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060927 Termination date: 20130615 |