CN112557757A - Portable display instrument and underground lead resistance testing system - Google Patents
Portable display instrument and underground lead resistance testing system Download PDFInfo
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- CN112557757A CN112557757A CN202011424076.9A CN202011424076A CN112557757A CN 112557757 A CN112557757 A CN 112557757A CN 202011424076 A CN202011424076 A CN 202011424076A CN 112557757 A CN112557757 A CN 112557757A
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- 238000012360 testing method Methods 0.000 title claims abstract description 79
- 238000012545 processing Methods 0.000 claims abstract description 28
- 229920003023 plastic Polymers 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000000523 sample Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/20—Measuring earth resistance; Measuring contact resistance, e.g. of earth connections, e.g. plates
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention relates to a portable display instrument and an underground lead resistance testing system.A data processing chip processes received data such as a testing result sent by an underground lead resistance testing device and then displays the processed data on a display screen, so that a tester can check the testing result sent by the underground lead resistance testing device from the display screen in time under the condition that the distance between a testing probe and a host is longer such as 100 meters, 200 meters and the like, and further determines whether a grounding device is normal in time, thereby avoiding serious consequences such as fire, short circuit damage of the grounding device and the like, reducing the time cost, needing to arrange special personnel beside the host and reducing the labor cost.
Description
Technical Field
The invention relates to the technical field of testing devices, in particular to a portable display instrument and an underground lead resistance testing system.
Background
The underground lead resistance testing device is used for conducting grounding network on-resistance testing, and aims to check the electrical integrity of the grounding device, namely, check the electrical connectivity among various electrical equipment to be grounded in the grounding device, all parts of the grounding device and the equipment, and generally use direct current resistance values to indicate the electrical integrity of the grounding device, so that a tester can keep and maintain the electrical integrity of the grounding device according to the testing result of the grounding network on-resistance testing, the equipment can be prevented from running without the ground, an accident current leakage channel is provided, and the safe running of the equipment is ensured.
However, the distance between the test probe for obtaining the dc resistance value, i.e. the test result of the ground net on-resistance test, of the current underground lead resistance test device and the host is long, e.g. 100 meters, 200 meters, etc., so that a tester holding the test probe cannot check the dc resistance value, i.e. the test result of the ground net on-resistance test, from the host in time, and often needs to inform the tester by telephone, short message, etc., and the tester determines whether the grounding device is normal according to the test result of the ground net on-resistance test, which results in overlong communication time, increased time cost, and the tester cannot obtain the test result of the ground net on-resistance test in time, and further cannot find the abnormality of the grounding device in time, which easily results seriously, and a special person needs to guard beside the host to send the test result at any time, increasing the labor cost.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a portable display instrument and an underground lead resistance testing system.
The technical scheme of the portable display instrument is as follows:
the data processing chip is used for processing the data received by the data receiving device and displaying the processed data on the display screen.
The portable display instrument has the following beneficial effects:
the data processing chip processes received data such as a test result sent by the underground lead resistance test device, and then displays the processed data on the display screen, so that a tester can check the test result sent by the underground lead resistance test device from the display screen in time under the condition that the distance between the test probe and the host is longer such as 100 meters, 200 meters and the like, and further determine whether the grounding device is normal in time, thereby avoiding serious consequences such as fire, short circuit damage of the grounding device and the like, reducing the time cost, arranging a special person beside the host to guard and reducing the labor cost.
On the basis of the technical scheme, the portable display instrument can be further improved as follows.
And further, the system also comprises a voice broadcasting device for broadcasting the processed data.
The beneficial effect of adopting the further scheme is that: data after the data processing chip is handled are reported through the voice broadcast device, but the tester can obtain the data after handling promptly underground lead wire resistance test device's test result in two ways, and the flexibility is strong, and when arbitrary one in display screen and the voice broadcast device takes place to damage, the tester also can in time be fed back to with underground lead wire resistance test device's test result to another one, guarantee that the tester can in time confirm whether earthing device is normal, avoid causing serious consequence.
Further, still include power supply battery and switch, power supply battery connects the switch, the switch is connected respectively data receiving arrangement data processing chip the display screen with the voice broadcast device.
The beneficial effect of adopting the further scheme is that: so that the tester can start the test or stop the test through the switch, the flexibility is strong, and the electric energy is saved.
Further, still include the shell, data receiving arrangement, data processing chip the voice broadcast device the display screen the power supply battery with the switch sets up respectively in the shell or sets up on the shell.
The beneficial effect of adopting the further scheme is that: the data receiving device, the data processing chip, the voice broadcasting device, the display screen, the power supply battery and the switch are respectively arranged in the shell or on the shell, so that the portability is improved.
Furthermore, the shell is made of plastic.
The beneficial effect of adopting the further scheme is that: the density of the plastic is low so as to reduce the weight of the portable display instrument, and when the data receiving device receives data through wireless signals, the plastic can not shield the wireless signals so as to ensure the accuracy of the received data, and the plastic can not rust.
Further, the switch is a button switch or an air switch.
Further, the data receiving device is a wifi module, a bluetooth module or an amplitude modulation AM module.
The beneficial effect of adopting the further scheme is that: because the data volume of the test result sent by the underground lead resistance testing device is extremely small, the wifi module, the Bluetooth module or the amplitude modulation AM module can meet the requirements, and the cost is low.
The technical scheme of the underground lead resistance testing system is as follows:
the portable display instrument comprises an underground lead resistance testing device and the portable display instrument, wherein the underground lead resistance testing device comprises a data sending device used for sending data to the data receiving device.
The underground lead resistance testing system has the following beneficial effects:
the underground lead resistance testing device sends data, namely a testing result, to the data receiving module in the portable display instrument through the data sending device, the data processing chip in the portable display instrument processes the received data and then displays the processed data on the display screen, so that a tester can check the testing result sent by the underground lead resistance testing device from the display screen in time under the condition that the distance between the testing probe and the host is longer, such as 100 meters, 200 meters and the like, and further determines whether the grounding device is normal in time, thereby avoiding serious consequences, such as fire, short circuit damage of the grounding device and the like, reducing the time cost, and a special person needs to be arranged beside the host to guard and reducing the labor cost.
Drawings
Fig. 1 is a schematic structural diagram of a portable display device according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of a data processing chip of type MAX 3221;
fig. 3 is a second schematic structural diagram of a portable display device according to an embodiment of the present invention;
fig. 4 is a third schematic structural diagram of a portable display device according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an underground lead resistance testing system according to an embodiment of the present invention;
fig. 6 is a circuit diagram of a power amplifier chip of type SNAP 01D;
in the drawings, the components represented by the respective reference numerals are listed below:
100. a data receiving device; 110. a data processing chip; 120. a display screen; 130. a voice broadcasting device; 140. a switch; 150. a power supply battery; 200. and a data transmitting device.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the embodiments of the invention.
As shown in fig. 1, the portable display device according to the embodiment of the present invention includes a data receiving device 100, a data processing chip 110 and a display screen 120, where the data processing chip 110 is respectively connected to the data receiving device 100 and the displayed data screen, and the data processing chip 110 is configured to process data received by the data receiving device 100 and then display the processed data on the display screen 120.
The data processing chip 110 processes the received data, such as the test result sent by the underground lead resistance test device 200, and then displays the processed data on the display screen 120, so that the tester can check the test result sent by the underground lead resistance test device 200 from the display screen 120 in time under the condition that the distance between the test probe and the host is longer, such as 100 meters, 200 meters and the like, and further determine whether the grounding device is normal in time, thereby avoiding serious consequences, such as fire, short circuit damage of the grounding device and the like, and reducing the time cost.
The data receiving apparatus 100 is a wifi module, a bluetooth module, or an AM module.
Because the data volume of the test result sent by the underground lead resistance test device 200 is extremely small, the wifi module, the bluetooth module or the AM module can meet the requirements and have low cost, wherein the AM module has the advantages of low price, long transmission distance and low development difficulty, and the 433 AM module of the application-free frequency band with the frequency of 315MHz (the module frequency is only 3mW and is less than the requirement of micro-power (short-distance) communication system which is less than 5 mW) can be selected, and meanwhile, the 433 AM module can effectively avoid the mutual interference with communication devices of other frequency bands, such as a protection device in a transformer substation.
Wherein, the signal transmission distance of wifi module is within 100 meters, and bluetooth module's signal transmission distance is within 20 meters, and 433 amplitude modulation AM module's signal transmission distance is within 1500 meters, and the price of wifi module is higher than bluetooth module, and bluetooth module's price is higher than 433 amplitude modulation AM module, can prefer to use 433 amplitude modulation AM module, can understand, can choose wifi module, bluetooth module or amplitude modulation AM module for use according to actual conditions.
The data processing chip 110 may select a chip with a model of MAX3221, wherein a circuit of the chip with the model of MAX3221 is shown in fig. 2, a specific connection manner is known to those skilled in the art, and the data received by the data receiving device 100 is processed, that is, analog-to-digital converted, and the processed data is displayed on the display screen 120, where a specific implementation process is known to those skilled in the art and is not described again.
The model of the display screen 120 is ST7920 (manufacturer is dimethy), 12864G (manufacturer is crystal union) or 12684lcd (manufacturer is jun display electronics), and the display screen 120 with the model of 12864G is suitable for display under sunlight and has low price, so the display screen is preferred.
As shown in fig. 3, in the above technical solution, a voice broadcasting device 130 is preferably further included for broadcasting the processed data.
Data after processing through data processing chip 110 are reported through voice broadcast device 130, but the tester can obtain the data after handling promptly underground lead wire resistance testing arrangement 200's test result in two ways, the flexibility is strong, and when arbitrary one in display screen 120 and voice broadcast device 130 takes place to damage, the tester also can in time be fed back to with underground lead wire resistance testing arrangement 200's test result to another one, guarantee that the tester can in time confirm whether earthing device is normal, avoid causing serious consequence.
The signal of the voice broadcast device 130 is SYN6288 (astronomical sky) or SYN6288 (electronic source), and the voice broadcast device 130 with the type SYN6288 is preferred because the price is low.
As shown in fig. 4, preferably, in the above technical solution, the apparatus further includes a power supply battery 150 and a switch 140, the power supply battery 150 is connected to the switch 140, and the switch 140 is respectively connected to the data receiving apparatus 100, the data processing chip 110, the display screen 120 and the voice broadcasting apparatus 130. So that the tester can start or stop the test through the switch 140, the flexibility is strong, and the electric energy is saved.
The power supply battery 150 may be a nickel-chromium battery, a lead storage battery, or a lithium battery, and preferably a lithium battery because of its stable output voltage and long service life. The power supply battery 150 providing the output voltage can be selected according to actual conditions.
The switch 140 is a push-button switch or an air switch, the price of the push-button switch is approximately equivalent to that of the air switch, and the screws of the crimping lead of the air switch are exposed to the outside, so that a tester has an electric shock risk, and the push-button switch is preferably selected.
Preferably, in the above technical solution, the mobile terminal further includes a housing, and the data receiving device 100, the data processing chip 110, the voice broadcasting device 130, the display screen 120, the power supply battery 150, and the switch 140 are respectively disposed in or on the housing.
The data receiving device 100, the data processing chip 110, the voice broadcasting device 130, the display screen 120, the power supply battery 150 and the switch 140 are respectively arranged in or on the casing, so that portability is improved.
It is understood that the housing can be designed according to the actual situation, such as a cubic box structure. The housing is made of plastic, the density of the plastic is low, so that the weight of the portable display instrument is reduced, when the data receiving device 100 receives data through a wireless signal, the plastic cannot shield the wireless signal, so that the accuracy of the received data is ensured, and the plastic cannot rust.
The shell can be made of PVC materials or engineering plastics and the like, and the PVC materials have the advantages of low price, easiness in manufacturing, no rustiness and good insulating property, so that the PVC materials are preferred.
As shown in fig. 5, an underground lead resistance testing system according to an embodiment of the present invention includes an underground lead resistance testing apparatus 200 and a portable display apparatus according to any one of the above embodiments, where the underground lead resistance testing apparatus 200 includes a data transmitting apparatus 210 for transmitting data to the data receiving apparatus 100.
The underground lead resistance testing device 200 sends data, namely a testing result, to a data receiving module in the portable display instrument through the data sending device 210, after the data processing chip 110 in the portable display instrument processes the received data, the processed data is displayed on the display screen 120, so that a tester can check the testing result sent by the underground lead resistance testing device 200 from the display screen 120 in time under the condition that the distance between a testing probe and a host is longer, such as 100 meters, 200 meters and the like, and further determine whether the grounding device is normal in time, thereby avoiding serious consequences, such as fire, short circuit damage of the grounding device and the like, reducing time cost, arranging a special person beside the host to guard, and reducing labor cost.
A power amplifier chip with the model of SNAP01D may be further connected between the data transmitting device 210 and the data receiving device 100 to amplify the data signal transmitted by the data transmitting device 210, so that the data signal is conveniently received by the data receiving device 100, or a power amplifier chip with the model of SNAP01D is also installed on the voice broadcasting device to increase the loudness of sound during voice broadcasting, where a circuit of the power amplifier chip is shown in fig. 6, and a specific connection manner thereof is known by those skilled in the art and is not described herein.
The data receiving device 100 in the portable display instrument is a wifi module, a bluetooth module or an amplitude modulation AM module, correspondingly, the data sending device 210 in the underground lead resistance testing device 200 is also a wifi module, a bluetooth module or an amplitude modulation AM module, and the data receiving device 100 in the portable display instrument is connected with the data sending module in the underground lead resistance testing device 200 in a pairing manner, so that experiments show that the test result displayed on the display screen 120 is completely consistent with the test result of the underground lead resistance testing device 200 when the distance between the test probe and the host is 200 meters, and the accuracy rate reaches 100%.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are intended to be covered by the scope of the present invention.
Claims (8)
1. The portable display instrument is characterized by comprising a data receiving device, a data processing chip and a display screen, wherein the data processing chip is respectively connected with the data receiving device and the displayed data screen, and the data processing chip is used for processing data received by the data receiving device and then displaying the processed data on the display screen.
2. The portable display instrument according to claim 1, further comprising a voice broadcasting device for broadcasting the processed data.
3. The portable display instrument according to claim 2, further comprising a power supply battery and a switch, wherein the power supply battery is connected to the switch, and the switch is respectively connected to the data receiving device, the data processing chip, the display screen and the voice broadcasting device.
4. The portable display instrument according to claim 3, further comprising a housing, wherein the data receiving device, the data processing chip, the voice broadcasting device, the display screen, the power supply battery and the switch are respectively disposed in or on the housing.
5. The portable display apparatus of claim 4, wherein the housing is made of plastic.
6. A portable display apparatus according to claim 5, wherein the switch is a push button switch or an air switch.
7. The portable display apparatus according to any one of claims 1 to 6, wherein the data receiving device is a wifi module, a bluetooth module or an AM module.
8. An underground lead resistance test system comprising an underground lead resistance test apparatus and a portable display apparatus as claimed in any one of claims 1 to 7, the underground lead resistance test apparatus comprising data transmission means for transmitting data to the data receiving means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011424076.9A CN112557757A (en) | 2020-12-08 | 2020-12-08 | Portable display instrument and underground lead resistance testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011424076.9A CN112557757A (en) | 2020-12-08 | 2020-12-08 | Portable display instrument and underground lead resistance testing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112557757A true CN112557757A (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011424076.9A Pending CN112557757A (en) | 2020-12-08 | 2020-12-08 | Portable display instrument and underground lead resistance testing system |
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| Country | Link |
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| CN (1) | CN112557757A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771631A (en) * | 2016-12-27 | 2017-05-31 | 西安亚能电气有限责任公司 | A kind of down conductor conducting resistance test device |
| CN109100573A (en) * | 2018-10-09 | 2018-12-28 | 广东电网有限责任公司 | A kind of earthing test handheld terminal |
| CN214310699U (en) * | 2020-12-08 | 2021-09-28 | 国网宁夏电力有限公司中卫供电公司 | Portable display instrument and underground lead resistance testing system |
-
2020
- 2020-12-08 CN CN202011424076.9A patent/CN112557757A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771631A (en) * | 2016-12-27 | 2017-05-31 | 西安亚能电气有限责任公司 | A kind of down conductor conducting resistance test device |
| CN109100573A (en) * | 2018-10-09 | 2018-12-28 | 广东电网有限责任公司 | A kind of earthing test handheld terminal |
| CN214310699U (en) * | 2020-12-08 | 2021-09-28 | 国网宁夏电力有限公司中卫供电公司 | Portable display instrument and underground lead resistance testing system |
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