CN201984113U - Resistance tester - Google Patents
Resistance tester Download PDFInfo
- Publication number
- CN201984113U CN201984113U CN2011200573132U CN201120057313U CN201984113U CN 201984113 U CN201984113 U CN 201984113U CN 2011200573132 U CN2011200573132 U CN 2011200573132U CN 201120057313 U CN201120057313 U CN 201120057313U CN 201984113 U CN201984113 U CN 201984113U
- Authority
- CN
- China
- Prior art keywords
- control device
- resistance
- processor control
- current source
- constant current
- 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
Abstract
The utility model relates to a resistance tester, comprising a single chip microcomputer control device, an input device, an output device, a constant current source and an AD sampling device, wherein the input device, the output device, the constant current source and the AD sampling device are respectively connected with the single chip microcomputer control device. The resistance tester further comprises a test interface respectively connected with the constant current source and the AD sampling device. Besides, the resistance tester can further comprise a storage device, a system reset device and a serial port communication interface. Compared with the present resistance testers, the resistance tester of the utility model is precise in test result, long in service life, simple and convenient in operation, therefore, the resistance tester can satisfy different test requirements.
Description
Technical field
The utility model is a kind of resistance meter.
Background technology
The general control mode that adopts of the resistance meter of selling on the market is to come amplification input signal by operational amplifier at present, and add the window comparator that variohm forms by operational amplifier and come amplifying signal is compared, produce output alarm, institute's measuring resistance value shows by professional gauge outfit again.Use the reference resistance of variohm as test resistance, because variohm is a physical construction, so limited by manufacturing process its serviceable life, is not suitable for repeatedly setting, be easy to generate fault, and resistance value is wanted temperature influence, and system stability is bad, and the more complicated maintenance difficulty of circuit is big, and failure rate is higher, but also has the not high shortcoming of measuring accuracy.
The utility model content
The utility model provides a kind of resistance meter, has long service life, system stability is good, and the high advantage of measuring accuracy.
The purpose of this utility model is achieved in that a kind of resistance meter, it is characterized in that, described resistance meter comprises monolithic processor control device, and be connected to input media, output unit, constant current source and AD sampling apparatus on the monolithic processor control device, also comprise a test interface, described test interface is connected to described constant current source and AD sampling apparatus.
Preferably, described input media comprises keyboard and is used for the outside expansion interface of importing.
Preferably, described output unit comprises alarm and display screen.
Preferably, also be connected with memory storage on the described monolithic processor control device.
Preferably, also be connected with the system reset device on the described monolithic processor control device.
Preferably, also be connected with the serial communication interface on the described monolithic processor control device.
Resistance meter described in the utility model, adopt monolithic processor control device as the major control part, carry out the input test condition by input media, with constant current source measured resistance is switched on, make measured resistance produce pressure drop, re-use the AD sampling apparatus pressure drop signal that resistance produces is gathered, can analysis meter calculate the resistance of measured resistance, the information that sends then judges whether to satisfy test condition to monolithic processor control device, sends information to output then to output test result.The utility model does not need to use any comparison resistance, and it is long to have a life-span, the advantage that system stability is high, and test process is all handled automatically simultaneously, the measuring accuracy height.
Description of drawings
Fig. 1 is a theory structure synoptic diagram of the present utility model.
Among the figure:
1----monolithic processor control device 2----input media 3----output unit
4----constant current source 5----AD sampling apparatus 6----test interface
7----memory storage 8----system reset device 9----serial communication interface
21----keyboard 22----expansion interface
31----alarm 32----display screen.
Embodiment
Referring to accompanying drawing 1, it is the theory structure synoptic diagram of the utility model resistance meter, comprise monolithic processor control device 1, and be connected to input media 2, output unit 3, constant current source 4 and AD sampling apparatus 5 on the monolithic processor control device 1, also comprise a test interface 6, described test interface 6 is connected to described constant current source 4 and AD sampling apparatus 5.When carrying out resistance test, at first by the predetermined test condition of input media 2 inputs, then measured resistance being positioned over test interface 6 places connects, constant current source 4 is switched on to measured resistance, steady current is provided, steady current can produce a pressure drop during by measured resistance on measured resistance, AD sampling apparatus 5 is connected on the test interface 6 equally, when producing pressure drop on the measured resistance, AD sampling apparatus 5 collects pressure drop signal, can draw the resistance size of measured resistance then by analytical calculation, and this information sent to monolithic processor control device 1, monolithic processor control device 1 is compared to this information, makes the judgement of whether satisfying test condition, and the result is transported to output unit 3 feeds back to the tester.The utility model in conjunction with known constant-current supply size of current, calculates the resistance size of measured resistance by physics general knowledge by the directly pressure drop of measurement measured resistance, and test result is accurate, and error is minimum, and measuring accuracy can be guaranteed.By changing the out-put supply size of constant current source 4, can test the measured resistance of various different resistances, no matter be big resistance or small resistor, can draw very accurate test result.
For convenience of test process, input media 2 can be a keyboard 21, by the different test condition of keyboard 21 inputs, the perhaps work of controlling resistance tester, and input media 2 can also have the expansion interface 22 that is used for outside input, with convenient outside input, control system running more easily; Output unit 3 can have voice guard 31, such as hummer, can remind tester's test result whether to satisfy predetermined test condition, output unit 3 can also be a display screen 32, such as multidigit nixie tube or light-emitting diode display, be to reflect test result more intuitively; On monolithic processor control device 1, can also connect a memory storage 7,, can make things convenient for repeatedly test in order to storing predetermined test condition or system acting program etc., can also store test results conveniently to consult; All right connected system resetting means 8 can make system reset apace on monolithic processor control device 1, convenient test next time; On monolithic processor control device 1, can also connect serial communication interface 9,, can use more easily like this, but also can carry out the test job of various complexity in order to total system is connected on the PC.
The utility model is compared with existing resistance meter, and test result is more accurate, and long service life, and is simple to operation, can satisfy various test request.
Claims (6)
1. resistance meter, it is characterized in that, described resistance meter comprises monolithic processor control device, and be connected to input media, output unit, constant current source and AD sampling apparatus on the monolithic processor control device, also comprise a test interface, described test interface is connected to described constant current source and AD sampling apparatus.
2. resistance meter according to claim 1 is characterized in that, described input media comprises keyboard and is used for the expansion interface of outside input.
3. resistance meter according to claim 1 is characterized in that described output unit comprises alarm and display screen.
4. resistance meter according to claim 1 is characterized in that, also is connected with memory storage on the described monolithic processor control device.
5. resistance meter according to claim 1 is characterized in that, also is connected with the system reset device on the described monolithic processor control device.
6. resistance meter according to claim 1 is characterized in that, also is connected with the serial communication interface on the described monolithic processor control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200573132U CN201984113U (en) | 2011-03-07 | 2011-03-07 | Resistance tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200573132U CN201984113U (en) | 2011-03-07 | 2011-03-07 | Resistance tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201984113U true CN201984113U (en) | 2011-09-21 |
Family
ID=44611571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200573132U Expired - Fee Related CN201984113U (en) | 2011-03-07 | 2011-03-07 | Resistance tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201984113U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628909A (en) * | 2012-04-28 | 2012-08-08 | 深圳市卓先实业有限公司 | Test device of parallelly-connected resistors |
| CN102866325A (en) * | 2012-09-20 | 2013-01-09 | 南京全信传输科技股份有限公司 | Portable testing instrument for switching-on resistance record and testing method thereof |
| CN103018570A (en) * | 2012-10-10 | 2013-04-03 | 国家电网公司 | Ground resistance testing equipment |
| CN103335706A (en) * | 2013-06-24 | 2013-10-02 | 成都凯天电子股份有限公司 | Method for online detecting characteristics of engine vibration sensor |
-
2011
- 2011-03-07 CN CN2011200573132U patent/CN201984113U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628909A (en) * | 2012-04-28 | 2012-08-08 | 深圳市卓先实业有限公司 | Test device of parallelly-connected resistors |
| CN102628909B (en) * | 2012-04-28 | 2014-09-10 | 深圳市卓先实业有限公司 | Test device of parallelly-connected resistors |
| CN102866325A (en) * | 2012-09-20 | 2013-01-09 | 南京全信传输科技股份有限公司 | Portable testing instrument for switching-on resistance record and testing method thereof |
| CN103018570A (en) * | 2012-10-10 | 2013-04-03 | 国家电网公司 | Ground resistance testing equipment |
| CN103335706A (en) * | 2013-06-24 | 2013-10-02 | 成都凯天电子股份有限公司 | Method for online detecting characteristics of engine vibration sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201984113U (en) | Resistance tester | |
| WO2017075962A1 (en) | Device for examining air quality, method for processing air quality data and server | |
| CN201731924U (en) | Novel system for proving flowmeter by standard meter method and vehicle-mounted gas flow standard device | |
| WO2019140956A1 (en) | Electricity quantity metering accuracy detection method, device and computer storage medium | |
| CN102375136A (en) | System and method for verifying electric energy meter on site | |
| CN104154987A (en) | Vibration wire type sensor reader measuring meter | |
| CN102128665B (en) | Device for detecting accuracy of mechanical water meter | |
| CN203100841U (en) | Electronic weighing apparatus | |
| CN103940468A (en) | Intelligent handheld rapid environment monitoring system | |
| CN110702202B (en) | Electronic balance on-line metering method and system based on cloud computing platform | |
| CN103411653A (en) | Calibration and detection device of liquid flow meter | |
| CN201936003U (en) | Calibration test system for resistance tester | |
| CN111088976A (en) | System and method for monitoring efficiency of oil pumping unit | |
| CN213423040U (en) | Plant liquid flow monitoring device | |
| CN208421073U (en) | A kind of instrument for measuring DC resistance with temperature precise measurement and automatic conversion function | |
| CN204788110U (en) | Online quick measuring instrument of plastic profile adhesive tape notch | |
| CN202329880U (en) | Device for calibrating heat meter automatically | |
| CN204044099U (en) | Boiler steam dryness on-line real-time measuremen device | |
| CN202676935U (en) | Portable tipping bucket rain sensor automatic calibrating device | |
| CN209691085U (en) | A kind of waterpower on-site data gathering device | |
| CN206557329U (en) | A kind of USB electric discharge agings electronic constant current load device | |
| RU104309U1 (en) | DEVICE FOR MEASURING MICROCLIMATE PARAMETERS | |
| CN206429445U (en) | A kind of Wind volume detector | |
| CN205898893U (en) | Rubidium atomic frequency standard test system and reference signal generating device thereof | |
| CN205941837U (en) | Curved automatic measurement appearance of battery discharge |
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: 20110921 Termination date: 20160307 |