CN203490292U - Grounding resistance tester with ultrasonic ranging function - Google Patents
Grounding resistance tester with ultrasonic ranging function Download PDFInfo
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- CN203490292U CN203490292U CN201320430609.3U CN201320430609U CN203490292U CN 203490292 U CN203490292 U CN 203490292U CN 201320430609 U CN201320430609 U CN 201320430609U CN 203490292 U CN203490292 U CN 203490292U
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- integrated module
- ultrasonic ranging
- grounding resistance
- resistance tester
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Abstract
The utility model discloses a grounding resistance tester with an ultrasonic ranging function, which comprises a housing, a probe, a function control button, a turn button and an LCD display screen. The grounding resistance tester is characterized in that: the housing is internally provided with a functional circuit; the functional circuit comprises a grounding resistance testing circuit and an ultrasonic ranging circuit. The grounding resistance testing circuit comprises the following components: a DC/AC conversion integrated module, an AC amplification integrated module, a filtering integrated module, an analog signal acquiring module and a reference value sampling module; wherein the DC/AC conversion integrated module, the AC amplification integrated module, the filtering integrated module, the analog signal acquiring module and the reference value sampling module are successively connected between a power supply and a central processor. The ultrasonic ranging circuit comprises an ultrasonic wave transmitting integrated module, an ultrasonic wave receiving integrated module, a filtering and signal amplifying integrated module, and a signal processor. According to the grounding resistance tester, the ultrasonic ranging circuit is ingeniously integrated with a grounding resistance testing instrument. The grounding resistance tester with the ultrasonic ranging function has the following advantages: high intelligent degree, high accuracy, high cost performance, convenient use and high speed.
Description
Technical field
The utility model relates to electronic measuring instrument technical field, is specifically related to a kind of band ultrasonic ranging function earth resistance tester.
Background technology
Existing earth resistance tester (ground pile type) is not with the function of range finding; And the departments such as electric power, quality inspection are when reality test stake resistance, according to existing condition, may ignore p-wire length whether to meet the demands, and the accuracy of p-wire length is also related to the precision of earth resistance; While testing in the past, the length of p-wire be all estimate or with tape measure, measure, cause like this length of p-wire not accurate enough or cause testing efficiency very low, and may cause very large error to earth resistance; In order to address the above problem, the utility model has carried out earth resistance and ultrasonic ranging good integrated, ensures in p-wire length and accurately in situation, carries out the precision measurement of stake resistance.
Utility model content
In order to address the above problem, the disclosed a kind of band ultrasonic ranging function earth resistance tester of the utility model.
The technical scheme that the utility model adopted is for achieving the above object:
A kind of band ultrasonic ranging function earth resistance tester, it comprises housing, probe, function control button, knob and LCD display, it is characterized in that, in described enclosure interior, functional circuit is set, described functional circuit comprises earth resistance circuit and ultrasonic ranging circuit, and described earth resistance circuit comprises that being connected to power supply in turn changes integrated module with the DC/AC between central processing unit, exchanges and amplify integrated module, the integrated module of filtering, collection of simulant signal module and reference value sampling module; Described ultrasonic ranging circuit comprises that ultrasound wave is launched integrated module, ultrasound wave receives integrated module, filtering and signal and amplifies integrated module and signal processor.
The integrated module of described filtering is integrated software and hardware analog filter block and digital filtering module also.
Described functional circuit comprises 2 lines, 3 lines or 3 test circuit structures of 4 lines, when test stake resistance, has 2 lines or 3 lines or 3 kinds of test functions of 4 lines.
Described functional circuit also integrated data keeps module, maximum/minimum value module, automatic and manual gear handover module, backlight module and mean value evaluation processor, the HOLD data of answering in contrast respectively keep function to control button, MAX/MIN maximum/minimum value function is controlled button, RANGE automatically and manual gear switching controls button, LIGHT backlight function is controlled button, and AVERAGE earth resistance runs into disturbs the processing controls button of averaging.
Described functional circuit is integration USB communication module also.
The utility model is connected with main control microcomputer by usb communication module, moves upper computer software on main control microcomputer; The Multipath digital quantity output unit of usb communication module controls data acquisition module produces measurement conversion and range is changed needed control signal, after multi-analog is changed by A/D converter, through usb bus, be transferred to main control microcomputer, data processing through main control microcomputer software shows measured data on microcomputer.
The utility model has the advantage of: ensure that p-wire length accurately in situation, carries out the precision measurement of stake resistance, can be because of the not accurate enough test error that causes stake resistance of p-wire length; Ultrasonic ranging and earth resistance tester are integrated dexterously, and band ultrasonic ranging function earth resistance tester, has high-intelligentization, pinpoint accuracy, high performance-price ratio, easy to use, feature efficiently.In conjunction with additional function of the present utility model, make use more intelligent, and greatly improved measuring accuracy, easy to carry, also saved purchase cost simultaneously.
Below in conjunction with accompanying drawing and embodiment, the utility model is further illustrated.
Accompanying drawing explanation
Fig. 1 is module map of the present utility model.
Embodiment
Embodiment, referring to Fig. 1, the band ultrasonic ranging function earth resistance tester that the utility model provides, it comprises housing, probe, function control button, knob and LCD display, in described enclosure interior, functional circuit is set, described functional circuit comprises earth resistance circuit and ultrasonic ranging circuit, and described earth resistance circuit comprises that being connected to power supply in turn changes integrated module with the DC/AC between central processing unit, exchanges and amplify integrated module, the integrated module of filtering, collection of simulant signal module and reference value sampling module; Described ultrasonic ranging circuit comprises that ultrasound wave is launched integrated module, ultrasound wave receives integrated module, filtering and signal and amplifies integrated module and signal processor.
The integrated module of described filtering comprises software and hardware analog filter block and digital filtering module.
Described functional circuit comprises 2 lines, 3 lines or 3 test circuit structures of 4 lines, during test stake resistance, there are 2 lines or 3 lines or 3 kinds of test functions of 4 lines, according to different actual needs, select different test circuit structures to test, by rotary function, control button and select.
Described functional circuit also integrated data keeps module, maximum/minimum value module, automatic and manual gear handover module, backlight module and mean value evaluation processor, the HOLD data of answering in contrast respectively keep function to control button, MAX/MIN maximum/minimum value function is controlled button, RANGE automatically and manual gear switching controls button, LIGHT backlight function is controlled button, and AVERAGE earth resistance runs into disturbs the processing controls button of averaging.
Described functional circuit is integration USB communication module also, and usb communication module connects Multipath digital quantity output unit.
The utility model is connected with main control microcomputer by usb communication module, moves upper computer software on main control microcomputer; The Multipath digital quantity output unit of usb communication module controls data acquisition module produces measurement conversion and range is changed needed control signal, after multi-analog is changed by A/D converter, through usb bus, be transferred to main control microcomputer, data processing through main control microcomputer software shows measured data on microcomputer LCD.
The utility model major function measurement range: 0.5～60 meter; Measuring accuracy is ± 1%.
The utility model grounding resistance measurement scope: frequency test signal is 94Hz and 128Hz; Test signal voltage: 45V exchanges; Short-circuit current: about 80mA; Stake resistance Re is 0.05 Ω～1999 Ω, measuring accuracy is ± (3%+5); Auxiliary earth resistance R h is 0～50k Ω, and measuring accuracy is ± 8%; Auxiliary earth resistance R s is 0～50k Ω, and measuring accuracy is ± 8%.
The utility model is not limited to above-mentioned embodiment, adopts or approximation apparatus identical with the utility model above-described embodiment, and obtain other for being with ultrasonic ranging function earth resistance tester, all within protection domain of the present utility model.
Claims (3)
1. be with ultrasonic ranging function earth resistance tester for one kind, it comprises housing, probe, function control button, knob and LCD display, it is characterized in that, in described enclosure interior, functional circuit is set, described functional circuit comprises earth resistance circuit and ultrasonic ranging circuit, and described earth resistance circuit comprises that being connected to power supply in turn changes integrated module with the DC/AC between central processing unit, exchanges and amplify integrated module, the integrated module of filtering, collection of simulant signal module and reference value sampling module; Described ultrasonic ranging circuit comprises that ultrasound wave is launched integrated module, ultrasound wave receives integrated module, filtering and signal and amplifies integrated module and signal processor.
2. band ultrasonic ranging function earth resistance tester according to claim 1, is characterized in that, described functional circuit comprises 2 lines, 3 lines or 3 test circuit structures of 4 lines.
3. band ultrasonic ranging function earth resistance tester according to claim 1, is characterized in that, described functional circuit is integration USB communication module also.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320430609.3U CN203490292U (en) | 2013-07-17 | 2013-07-17 | Grounding resistance tester with ultrasonic ranging function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320430609.3U CN203490292U (en) | 2013-07-17 | 2013-07-17 | Grounding resistance tester with ultrasonic ranging function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203490292U true CN203490292U (en) | 2014-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320430609.3U Expired - Lifetime CN203490292U (en) | 2013-07-17 | 2013-07-17 | Grounding resistance tester with ultrasonic ranging function |
Country Status (1)
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| CN (1) | CN203490292U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181397A (en) * | 2014-08-29 | 2014-12-03 | 厦门大恒科技有限公司 | Groundmeter with distance measuring function and method for measuring ground resistance through groundmeter |
-
2013
- 2013-07-17 CN CN201320430609.3U patent/CN203490292U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181397A (en) * | 2014-08-29 | 2014-12-03 | 厦门大恒科技有限公司 | Groundmeter with distance measuring function and method for measuring ground resistance through groundmeter |
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| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 523808 No. 6 industrial North Road, Songshan Lake high tech Industrial Development Zone, Dongguan, Guangdong Patentee after: UNI-TREND TECHNOLOGY (CHINA) Co.,Ltd. Address before: 523808 No. 6 industrial North Road, Songshan Lake high tech Industrial Development Zone, Dongguan, Guangdong Patentee before: UNI-TREND TECHNOLOGY (CHINA) Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140319 |