CN208224366U - A kind of intelligence circuit resistance tester - Google Patents
A kind of intelligence circuit resistance tester Download PDFInfo
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- CN208224366U CN208224366U CN201820631078.7U CN201820631078U CN208224366U CN 208224366 U CN208224366 U CN 208224366U CN 201820631078 U CN201820631078 U CN 201820631078U CN 208224366 U CN208224366 U CN 208224366U
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Abstract
The utility model discloses a kind of intelligent circuit resistance testers, including CPU, first control module and Switching Power Supply, the output end of the CPU is connect with the input terminal of 100A galvanostat, the output end of the 100A galvanostat and the input terminal of test product connect, the output end of the test product and the input terminal of amplifier connect, the input terminal of the CPU and the output end of A/D connect, and CPU respectively with display module, keyboard, clock and RS232/ printer are in be bi-directionally connected, the output end of the Switching Power Supply and the input terminal of test product are electrically connected, the output end of the Switching Power Supply and the input terminal of control terminal are electrically connected, the utility model relates to circuit resistance tester technical fields.The intelligence circuit resistance tester continuously can be exported high current for a long time, be effectively eliminated influence of the environment temperature to measurement result, while the use of military products connector enhances resistance to shock using newest power technology, easy to carry: small in size, light-weight.
Description
Technical field
The utility model relates to circuit resistance tester technical field, specially a kind of intelligent circuit resistance tester.
Background technique
High-voltage circuitbreaker is one of the most important control of electric system and protection equipment, and no matter system is in unloaded, load
Or situations such as short trouble, all should reliably act as required when requiring breaker actuation.Therefore it to electric system
Safe and economical operation has direct influence, and " by taking the Utilities Electric Co. of Guangxi as an example, total number of switches increases by 3% within 99 years, and sum reaches
4072, in the case where number of switches increases, maintenance task is heavy, to guarantee safe operation of power system.Switch maintenance work
It opposes and eliminates all kinds of failures, accident plays important function.It is the important means for ensureing high-voltage switch gear reliability service.China at present
The oil-break that electric system uses is more.Structure of the operation department to the inspection of breaker performance due to various breakers, spy
Its not exactly the same experimental project of property is also not quite similar but wherein galvanic circle resistance depends primarily on the sound contact of breaker
Contact resistance.Because whether its size directly affects generates unacceptable fever when passing through normal current, and passes through short circuit
Cut-out performance when electric current；It is reflect installation and repairing quality key data therefore, measure galvanic circle resistance be handover
Generally have with the reason of project contact of breaker contact resistance rises that must make in big light maintenance: 1, contact surface aoxidizes, 2, contact
Between remaining have mechanical admixture or repeatedly cut-off remaining after short circuit current and have a carbide, 3, the decline of contact pressure, 4, contact has
It changes in the improper operation of effect contact area reduction contact adjustment or contact burning is serious, while existing loop resistance is tested
Instrument electric current is low, and anti-interference ability is weak, service life is low inconvenient to carry.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of intelligent circuit resistance tester, solves existing
Circuit resistance tester electric current is low, and anti-interference ability is weak, the low problem inconvenient to carry of service life.
In order to achieve the above object, the utility model is achieved by the following technical programs: a kind of intelligence loop resistance survey
Instrument is tried, including CPU, the first control module and Switching Power Supply, the output end of the CPU are connect with the input terminal of 100A galvanostat,
The output end of the 100A galvanostat and the input terminal of test product connect, and the output end of the test product and the input terminal of amplifier connect,
The output end of the input terminal of the CPU and A/D connect, and CPU respectively with display module, keyboard, clock and RS232/ printer
In being bi-directionally connected, the output end of the Switching Power Supply and the input terminal of test product are electrically connected, the output end and voltage of the test product
The input terminal of output valve connects, and the output end of the Switching Power Supply and the input terminal of current divider output valve are electrically connected, described to open
The output end in powered-down source and the input terminal of control terminal are electrically connected.
Preferably, the P00 pin in first control module passes through the DB0 pin on connecting line and the second control module
It connects, the P07 pin in first control module is connect by connecting line with the DB7 pin in the second control module.
Preferably, the RD pin in first control module and WR pin pass through on connecting line and the second control module
E pin connection.
Preferably, the P27 pin in first control module passes through the C8A pin on connecting line and the second control module
It connects, the P26 pin in the first control module is connect by connecting line with the C8B pin in the second control module.
Preferably, the P25 pin in first control module passes through the RW pin on connecting line and the second control module
It connects, the P24 pin in the first control module is connect by connecting line with the DI pin in the second control module.
Preferably, the V8 pin in second control module is connect by connecting line with 10K power supply.Beneficial effect
The utility model provides a kind of intelligent circuit resistance tester.Has following beneficial effect, intelligence circuit electricity
Hinder tester, by CPU, 100A galvanostat, test product, amplifier, A/D and RS232/ printer, clock, keyboard, display module,
First control module, the second control module, Switching Power Supply, voltage output value, current divider output valve and control terminal, the first control mould
P00 pin on block is connect by connecting line with the DB0 pin in the second control module, the P07 in first control module
Pin is connect by connecting line with the DB7 pin in the second control module, and the RD pin and WR pin in the first control module are equal
It is connect by connecting line with the E pin in the second control module, the P27 pin in the first control module passes through connecting line and second
C8A pin in control module connects, and the P26 pin in the first control module passes through on connecting line and the second control module
C8B pin connects, and the P25 pin in the first control module is connect by connecting line with the RW pin in the second control module, the
P24 pin in one control module is connect by connecting line with the DI pin in the second control module, in the second control module
V8 pin is connect by connecting line with 10K power supply, using newest power technology, continuously can be exported high current for a long time, be overcome
The drawbacks of pulsed power supplies immediate current, uses newest power technology, continuously can export high current for a long time, overcome pulsed
The drawbacks of power supply immediate current, can effective breakdown switch contact oxidation film, obtain good test result, anti-interference ability
Strong: under the conditions of severe jamming, the last a data of liquid crystal display can be stablized within the scope of ± 1 word, stable reading, repeatability
It is good, long service life: all using precision resister, effectively eliminate influence of the environment temperature to measurement result, while military products
The use of connector enhances resistance to shock, easy to carry: small in size, light-weight.
Detailed description of the invention
Fig. 1 is the separate block diagram of the utility model totality；
Fig. 2 is the utility model liquid crystal display circuit schematic diagram；
Fig. 3 is the utility model power-supply system functional block diagram.
In figure: 1-CPU, 2-100A galvanostat, 3- test product, 4- amplifier, 5-A/D, 6- and RS232/ printer, 7- clock,
8- keyboard, 9- display module, the first control module of 10-, the second control module of 11-, 12- Switching Power Supply, 13- voltage output value,
14- current divider output valve, 15- control terminal.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: a kind of intelligence circuit resistance tester, including
CPU1, the first control module 10 and Switching Power Supply 12, should meet after overhaul manufactory regulation (factory-said value (=40m), it is running
Resistance value allow than manufactory provide double, test method: with electric current pressure decline method measurement electric current be not less than 100A, test away from
From that should be not less than 3 meters, the testing time is greater than 10 seconds, and the output end of CPU1 is connect with the input terminal of 100A galvanostat 2,100A constant current
The output end of device 2 is connect with the input terminal of test product 3, and the output end of test product 3 is connect with the input terminal of amplifier 4, the input terminal of CPU1
It is connect with the output end of A/D5, and CPU1 is in respectively two-way company with display module 9, keyboard 8, clock 7 and RS232/ printer 6
Connect, the raising clock frequency of single-chip microcontroller hardware performance reaches as high as 40MHz or more, using AT89C52 chip, it with
INTELS031 is core, and the full quiescent operation of compatible with 805 series monolithics is in 0HZ.24MHz；The locking of three-level program storage；
Internal 256 byte RAM32 items may be programmed the port I/O；Three 16 bit timing ^a number devices；Eight grades of interruptions: there is Universal Serial Interface；Have
Low-voltage is idle and power supply declines mode, and for general user, it also has clear advantage, and inside is deposited containing 8KFJash
Reservoir can carry out 1000 erasable operations, can be easy to carry out the modification of program in the development process of system, greatly shorten
The development cycle of system simultaneously, in system work process, can effectively save some data informations, even if extraneous power supply
Damage nor affects on the preservation of information, its pin and 80C5 socket is compatible, can directly be replaced with 89 series monolithics other
The chip containing larger capacity can be selected if procedure quantity needs to increase in 51 family chips, such as 89C55 (including 20Kflash), switch
The output end of power supply 12 and the input terminal of test product 3 are electrically connected, and the output end of test product 3 and the input terminal of voltage output value 13 connect
It connects, the output end of Switching Power Supply 12 and the input terminal of current divider output valve 14 are electrically connected, the output end of Switching Power Supply 12 and control
The input terminal at end 15 processed is electrically connected, and the P00 pin in the first control module 10 passes through on connecting line and the second control module 11
The connection of DB0 pin, the P07 pin in the first control module 10 passes through the DB7 pin on connecting line and the second control module 11
It connects, the RD pin and WR pin in the first control module 10 pass through the company of the E pin on connecting line and the second control module 11
It connects, the P27 pin in the first control module 10 is connect by connecting line with the C8A pin in the second control module 11, the first control
P26 pin on molding block 10 is connect by connecting line with the C8B pin in the second control module 11, in the first control module 10
P25 pin connect with the RW pin in the second control module 11 by connecting line, the P24 pin in the first control module 10 leads to
Connecting line is crossed to connect with the DI pin in the second control module 11, the V8 pin in the second control module 11 by connecting line with
The connection of 10K power supply, liquid crystal is a kind of organic compound between a solid and a liquid, it can be flowed less as liquid, again
With similar certain optical characteristics with product body, i.e., its electrooptic effect is different on different directions again, is made using this characteristic
Liquid crystal display LCD, display portion use MGLSl9264 dot matrix lcd (LCD), have LED backlight, and wide temperature is aobvious
Show, which uses HD61202 controller, and easy to use, uniline can show Chinese character 12 of 16'16 dot matrix, and whole screen shows the Chinese
Word 12'4--48, it can also make that display portion is flexibly lively, gives top priority to what is the most important by changing the size of word, and interspersed Chinese and English,
The design, using the method that software delay and hardware interrupts combine, has been done animation and has been set during system delay 24 seconds
Meter, it is dry as dust when the waiting reduced, have inside the fine .5 serial line interface of effect and serial printer MCS--51 single-chip microcontroller
The serial line interface of one full duplex can send simultaneously there are two independent receiving, transmission buffer SBUF, receive data transmission
Buffer, which can only be write, to be read, and receiving buffer can only read and cannot be written, two buffer occupancies, one address (991-
1), RS232 serial communication interface is external communication interface more general in present instrument and meter, it can be carried out with host computer
Communication, can also connect serial printer, and compared with parallel interface, its occupied resource is less, and communication distance is long, and configuration is more clever
It is living, conveniently, the remote transmission of data, telemetering, in terms of the widely used MAX202E chip using MAXIAM company,
Chip list 5v power supply, outside only need to connect 40,1U capacitors, connect 121 simply, easy to use, are the masters of current serial line interface
Chip is flowed, which can be to be added power-supply filter in alternating current 220V input terminal, effectively eliminate and draw because power grid interferes
The interference to test circuit part risen is added differential amplifier in signal input part, has filtered out common mode interference, ensure that test
Precision.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of intelligence circuit resistance tester, including CPU (1), the first control module (10) and Switching Power Supply (12), feature
Be: the output end of the CPU (1) is connect with the input terminal of 100A galvanostat (2), the output end of the 100A galvanostat (2)
Connect with the input terminal of test product (3), the output end of the test product (3) is connect with the input terminal of amplifier (4), the CPU (1) it is defeated
Enter end to connect with the output end of A/D (5), and CPU (1) is beaten with display module (9), keyboard (8), clock (7) and RS232/ respectively
Print machine (6) is in being bi-directionally connected, and the output end of the Switching Power Supply (12) and the input terminal of test product (3) are electrically connected, the test product
(3) output end is connect with the input terminal of voltage output value (13), and the output end and current divider of the Switching Power Supply (12) export
The input terminal for being worth (14) is electrically connected, and the output end of the Switching Power Supply (12) and the input terminal of control terminal (15) are electrically connected.
2. a kind of intelligent circuit resistance tester according to claim 1, it is characterised in that: first control module
(10) the P00 pin on is connect by connecting line with the DB0 pin on the second control module (11), first control module
(10) the P07 pin on is connect by connecting line with the DB7 pin on the second control module (11).
3. a kind of intelligent circuit resistance tester according to claim 1, it is characterised in that: first control module
(10) RD pin and WR pin on pass through connecting line and connect with the E pin on the second control module (11).
4. a kind of intelligent circuit resistance tester according to claim 1, it is characterised in that: first control module
(10) the P27 pin on is connect by connecting line with the C8A pin on the second control module (11), in the first control module (10)
P26 pin connect with the C8B pin on the second control module (11) by connecting line.
5. a kind of intelligent circuit resistance tester according to claim 1, it is characterised in that: first control module
(10) the P25 pin on is connect by connecting line with the RW pin on the second control module (11), in the first control module (10)
P24 pin connect with the DI pin on the second control module (11) by connecting line.
6. a kind of intelligent circuit resistance tester according to claim 2, it is characterised in that: second control module
(11) the V8 pin on is connect by connecting line with 10K power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820631078.7U CN208224366U (en) | 2018-04-28 | 2018-04-28 | A kind of intelligence circuit resistance tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820631078.7U CN208224366U (en) | 2018-04-28 | 2018-04-28 | A kind of intelligence circuit resistance tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208224366U true CN208224366U (en) | 2018-12-11 |
Family
ID=64513711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820631078.7U Expired - Fee Related CN208224366U (en) | 2018-04-28 | 2018-04-28 | A kind of intelligence circuit resistance tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208224366U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376440A (en) * | 2019-08-15 | 2019-10-25 | 株洲湘火炬火花塞有限责任公司 | A kind of dedicated high voltage source resistance meter of spark plug porcelain component resistance |
-
2018
- 2018-04-28 CN CN201820631078.7U patent/CN208224366U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376440A (en) * | 2019-08-15 | 2019-10-25 | 株洲湘火炬火花塞有限责任公司 | A kind of dedicated high voltage source resistance meter of spark plug porcelain component resistance |
| CN110376440B (en) * | 2019-08-15 | 2021-08-03 | 潍柴火炬科技股份有限公司 | Special high-voltage source resistance tester for spark plug ceramic component resistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181211 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |