CN108205093B - Cable connection proofreading instrument for engineering construction - Google Patents
Cable connection proofreading instrument for engineering construction Download PDFInfo
- Publication number
- CN108205093B CN108205093B CN201810043100.0A CN201810043100A CN108205093B CN 108205093 B CN108205093 B CN 108205093B CN 201810043100 A CN201810043100 A CN 201810043100A CN 108205093 B CN108205093 B CN 108205093B
- Authority
- CN
- China
- Prior art keywords
- resistor
- receiver
- transmitter
- module
- chip microcomputer
- 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.)
- Active
Links
Images
Classifications
-
- 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
- G01R31/58—Testing of lines, cables or conductors
Abstract
The invention relates to a cable connection proofreading tool for engineering construction, which is characterized by comprising a transmitter/receiver; one transmitter/receiver is respectively connected with the public ground wire and the cable to be tested and transmits signals through the cable to be tested, and the other transmitter/receiver is respectively connected with the public ground wire and the cable to be tested and receives the transmitted signals. The three-state detection circuit has the advantages that the design is reasonable, the structure is simple, the conducting resistance of a circuit to be detected can be accurately judged by means of a reasonable algorithm program and a circuit design of the first single chip microcomputer, the disconnection or disconnection-free operation can be carried out to carry out single-wire three-state detection on the cable, the three-state detection and alarm functions of an open-circuit state, a closed-circuit state and a ground fault short-circuit state are realized, the detection is convenient and rapid, and the cable detection efficiency is effectively improved.
Description
Technical Field
The invention relates to the field of electromechanics, in particular to a cable connection proofreading tool for engineering construction.
Background
At present, in the field of various engineering installation, the checking work of the cable connection condition before completion in a cabinet of a control cabinet is also called as a line checking process, and at present, two methods are operated, one method is to use a universal meter to measure and test the ground one by one, the method is to simultaneously remove the same line to be tested from a terminal which is connected with the line by two persons at two ends, one method is to manually short the ground after removing the line, inform the other end of an operator to check the ground measuring resistance by the universal meter by using an interphone, confirm the correctness of the line core line after repeated on-off tests, connect back to a terminal block after recording, and then perform the next line checking test. The method has the disadvantages that the short circuit of the line to the ground needs to be repeatedly tested and confirmed by disconnecting the line one by one, the interphone needs to be used for continuous communication, the construction speed is slow, the efficiency is low, and in addition, the terminals are easily damaged by repeatedly disconnecting and connecting the terminals.
The other method is that a long-line test lamp is used, an indicator lamp and a battery are placed in the hands of a commander positioned in the middle, two operators hold a test line to listen to the commander interphone commands at two sides and respectively contact corresponding terminals on a wiring cabinet, if wiring is correct, a circuit is conducted, the indicator lamp is on to represent qualification, and the next operator is switched to continue testing after recording, some units of the method are used for years, the defect is that the wires need to be pulled, the operators at two ends do not know the current measurement condition, the operator can completely depend on the commander to carry out experience judgment through the on-off and the light-dark of the lamp, the conduction condition of the tested cable cannot be quantitatively detected, and if the number of ohms of the tested cable is larger than the number of ohms, the; in addition, the temporary cable is long and difficult to move randomly, and the efficiency is low.
Disclosure of Invention
In order to solve the problems, the invention provides a cable wiring calibration tool for engineering construction, which is reasonable in design and simple in structure, can accurately judge the on-resistance of a circuit to be tested by means of a reasonable algorithm program of a first single chip microcomputer and circuit design, can perform cable single-wire three-state detection by means of disconnection or disconnection-free, realizes the detection and alarm functions of three conditions of an open circuit state, a closed circuit state and a ground fault short circuit state, is convenient and quick, and effectively improves the cable detection efficiency.
The technical scheme of the invention is as follows:
a cable connection proofreading tool for engineering construction comprises a transmitter/receiver; one transmitter/receiver is respectively connected with the public ground wire and the cable to be tested and transmits signals through the cable to be tested, and the other transmitter/receiver is respectively connected with the public ground wire and the cable to be tested and receives the transmitted signals.
The transmitter/receiver comprises a main control board, a voltage judgment module and a first single chip microcomputer are integrally arranged on the main control board, the voltage judgment module comprises a first resistor, a second resistor, a third resistor and a fourth resistor, the first resistor is connected with the input end of the first single chip microcomputer when the transmitter/receiver is in a transmitting mode, the second resistor, the third resistor and the fourth resistor are opened, the first resistor is connected with the second resistor in parallel when the transmitter/receiver is in a receiving mode, the third resistor is connected with the fourth resistor in parallel, and the first resistor, the second resistor, the third resistor and the fourth resistor are connected in series and connected with the input end of the first single chip microcomputer.
The technical proposal is further improved and refined, the transmitter/receiver also comprises a shell, a sound generating unit, a light emitting unit, a display unit, an operation unit and a test wire, wherein the shell is respectively provided with a charging socket and a test wire socket, a main control board is arranged in the shell, the sound generating unit, the light emitting unit, the display unit and the operation unit are embedded in the shell, a charging module, a battery, a voltage stabilizing module and a wireless module are further integrated on the main control board, the charging module is connected with the battery and is responsible for the functions of charging the battery and automatically stopping the battery when the battery is fully charged, the battery is respectively connected with a first singlechip and the voltage stabilizing module and is responsible for the power supply of the first singlechip and the voltage stabilizing module, the voltage stabilizing module is connected with a voltage judging module and provides stable voltage, the voltage judging module is connected with the input end of the first singlechip, charging socket passes through the wire electricity and connects the module of charging, and the module of charging passes through the wire electricity and connects luminescence unit, and the test wire socket passes through the wire electricity and connects voltage judgement module, and sound producing unit and display element are connected through the wire electricity respectively to first singlechip output, and the operating unit passes through the wire and connects first singlechip input, and the plug-in is connected between test wire and the test wire socket.
The technical scheme is further improved and refined, the test lines comprise a red probe test line and a black grounding crocodile clamp test line, the black grounding crocodile clamp is connected with a common ground wire, and the red probe test line is connected with a cable to be tested.
The technical proposal is further improved and refined, the proofreading tool also comprises a commander, the commander comprises a shell, a main control panel, a sound production unit and a light-emitting unit, display element and operating element, be provided with charging socket on the shell, be provided with the main control board in the shell, inlay on the shell and be equipped with sound production unit and luminescence unit, the integrated module that charges that is provided with on the main control board, a battery, two wireless module and second singlechip, the battery is connected to the module of charging, two wireless module are connected respectively to the battery, be responsible for the power supply of two wireless module, the second singlechip is connected respectively to two wireless module, charging socket passes through the wire electricity and connects the module of charging, the luminescence unit is connected through the wire electricity to the module of charging, sound production unit and display element are connected respectively through the wire electricity to the second singlechip output, operating element passes through the wire electricity and connects.
The technical scheme is further improved and refined, wherein one wireless module of the director is connected with the wireless module of one transmitter/receiver in a matching way, and the other wireless module of the director is connected with the wireless module of the other transmitter/receiver in a matching way.
The technical scheme is further improved and refined, and the wireless module adopts a Bluetooth or Wi-Fi mode; the sounding unit adopts a buzzer or a loudspeaker and is used for alarming and prompting; the light-emitting unit is an LED indicator light and is responsible for displaying the charge-discharge states of the transmitter/receiver and the commander; the display unit adopts an LED nixie tube or an LCD (liquid crystal display) screen or an OLED (organic light emitting diode) display screen and is used for displaying the state of the cable to be tested; the operation unit adopts a dial switch or a button or an encoder and is used for adjusting the functions and the states of the transmitter/receiver.
The technical scheme is further improved and refined, and the charging module is formed by connecting an LTC4050 chip, a capacitor, a diode and a plurality of resistors in series or in parallel.
The technical scheme is further improved and refined, and the voltage stabilizing module is formed by connecting an LDO voltage stabilizing chip and a PMOS triode.
The technical scheme is further improved and refined, and the first single chip microcomputer and the second single chip microcomputer are matched and edited with an algorithm program.
The invention has the advantages of reasonable design and simple structure, realizes the accurate judgment of the on-resistance of the circuit to be detected by depending on the reasonable algorithm program and the circuit design of the first singlechip, can perform disconnection or disconnection-free cable single-wire three-state detection, realizes the detection and alarm functions of three conditions of an open circuit state, a path state and a ground fault short circuit state, is convenient and quick, and effectively improves the cable detection efficiency.
Drawings
Fig. 1 is a schematic diagram of a transmitter/receiver of the present invention.
Fig. 2 is a schematic diagram of the command engine of the present invention.
Fig. 3 is a partial electrical schematic diagram (1) of the transmitter/receiver of the present invention.
Fig. 4 is a partial electrical schematic diagram (1) of the transmitter/receiver of the present invention.
Fig. 5 is a partial electrical schematic of the transmitter/receiver of the present invention (2).
Fig. 6 is a partial electrical schematic of the transmitter/receiver of the present invention (2).
Detailed Description
Referring to fig. 1-6, a cable connection correction tool for engineering construction includes a transmitter/receiver; one transmitter/receiver is respectively connected with the public ground wire and the cable to be tested and transmits signals through the cable to be tested, and the other transmitter/receiver is respectively connected with the public ground wire and the cable to be tested and receives the transmitted signals.
The voltage judging module 02 comprises a first resistor 05, a second resistor 06, a third resistor 07 and a fourth resistor 08, when the transmitter/receiver is in a transmitting mode, the first resistor 05 is connected with the input end 09 of the first single chip microcomputer, the second resistor 06, the third resistor 07 and the fourth resistor 08 are open-circuited, when the transmitter/receiver is in a receiving mode, the first resistor 05 and the second resistor 06 are connected in parallel, the third resistor 07 and the fourth resistor 08 are connected in parallel, and the first resistor 05, the second resistor 06, the third resistor 07 and the fourth resistor 08 are connected in series and connected with the input end 09 of the first single chip microcomputer.
The technical proposal is further improved and refined, the transmitter/receiver also comprises a shell, a sound generating unit, a light emitting unit, a display unit, an operation unit and a test wire, wherein the shell is respectively provided with a charging socket and a test wire socket, a main control board is arranged in the shell, the sound generating unit, the light emitting unit, the display unit and the operation unit are embedded in the shell, a charging module, a battery, a voltage stabilizing module and a wireless module are further integrated on the main control board, the charging module is connected with the battery and is responsible for the functions of charging the battery and automatically stopping the battery when the battery is fully charged, the battery is respectively connected with a first singlechip and the voltage stabilizing module and is responsible for the power supply of the first singlechip and the voltage stabilizing module, the voltage stabilizing module is connected with a voltage judging module and provides stable voltage, the voltage judging module is connected with the input end of the first singlechip, charging socket passes through the wire electricity and connects the module of charging, and the module of charging passes through the wire electricity and connects luminescence unit, and the test wire socket passes through the wire electricity and connects voltage judgement module, and sound producing unit and display element are connected through the wire electricity respectively to first singlechip output, and the operating unit passes through the wire and connects first singlechip input, and the plug-in is connected between test wire and the test wire socket.
The technical scheme is further improved and refined, the test lines comprise a red probe test line and a black grounding crocodile clamp test line, the black grounding crocodile clamp is connected with a common ground wire, and the red probe test line is connected with a cable to be tested.
The technical proposal is further improved and refined, the proofreading tool also comprises a commander, the commander comprises a shell, a main control panel, a sound production unit and a light-emitting unit, display element and operating element, be provided with charging socket on the shell, be provided with the main control board in the shell, inlay on the shell and be equipped with sound production unit and luminescence unit, the integrated module that charges that is provided with on the main control board, a battery, two wireless module and second singlechip, the battery is connected to the module of charging, two wireless module are connected respectively to the battery, be responsible for the power supply of two wireless module, the second singlechip is connected respectively to two wireless module, charging socket passes through the wire electricity and connects the module of charging, the luminescence unit is connected through the wire electricity to the module of charging, sound production unit and display element are connected respectively through the wire electricity to the second singlechip output, operating element passes through the wire electricity and connects.
The technical scheme is further improved and refined, one wireless module of the commander is connected with the wireless module of one transmitter/receiver in a matching way, the other wireless module of the commander is connected with the wireless module of the other transmitter/receiver in a matching way, the state information of the two transmitters/receivers is transmitted to the second singlechip of the commander through the wireless modules to be processed, a result is obtained, and the second singlechip outputs the result to the sound production unit and the display unit to alarm and display.
The technical scheme is further improved and refined, and the wireless module adopts a Bluetooth or Wi-Fi mode; the sounding unit adopts a buzzer or a loudspeaker and is used for alarming and prompting; the light-emitting unit is an LED indicator light and is responsible for displaying the charge-discharge states of the transmitter/receiver and the commander; the display unit adopts an LED nixie tube or an LCD (liquid crystal display) screen or an OLED (organic light emitting diode) display screen and is used for displaying the state of the cable to be tested; the operation unit adopts a dial switch or a button or an encoder and is used for adjusting the functions and the states of the transmitter/receiver.
The technical scheme is further improved and refined, and the charging module 10 is formed by connecting an LTC4050 chip 12, a capacitor 11, a diode 13 and a plurality of resistors 14 in series or in parallel.
The technical scheme is further improved and refined, and the voltage stabilizing module 01 is formed by connecting an LDO voltage stabilizing chip 04 and a PMOS triode 03.
The technical scheme is further improved and refined, and the first single chip microcomputer and the second single chip microcomputer are matched and edited with an algorithm program.
When the device is used, the voltage output by the transmitter/receiver in the transmitting mode passes through the first resistor, then passes through the resistor of the cable to be tested, then is transmitted to the input resistor formed by connecting the third resistor and the fourth resistor of the receiver of the other transmitter/receiver in the receiving mode in parallel, and is grounded, so that three equivalent resistors form a voltage dividing system, the transmitter/receiver in the transmitting mode detects the voltage of the first resistor and feeds the voltage back to the first singlechip, the first singlechip processes the voltage to obtain a result, and the result is output to the sound generating unit and the display unit to alarm and display; meanwhile, the other transmitter/receiver in the receiving mode detects the voltage on the third resistor or the fourth resistor and feeds the voltage back to the first single chip microcomputer, the first single chip microcomputer processes the voltage to obtain a result, and the result is output to the sound generating unit and the display unit to be alarmed and displayed.
The invention has the advantages of reasonable design and simple structure, realizes the accurate judgment of the on-resistance of the circuit to be detected by depending on the reasonable algorithm program and the circuit design of the first singlechip, can perform disconnection or disconnection-free cable single-wire three-state detection, realizes the detection and alarm functions of three conditions of an open circuit state, a path state and a ground fault short circuit state, is convenient and quick, and effectively improves the cable detection efficiency.
Because of the limited character expression, there exist practically unlimited specific structures, and it will be apparent to those skilled in the art that a number of improvements, decorations, or changes may be made without departing from the principles of the present invention, or the above technical features may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (1)
1. The utility model provides a cable connection proofreading instrument for engineering construction which characterized in that: it includes a transmitter/receiver; one transmitter/receiver is respectively connected with the public ground wire and the cable to be tested and transmits signals through the cable to be tested, and the other transmitter/receiver is respectively connected with the public ground wire and the cable to be tested and receives the transmitted signals;
the transmitter/receiver comprises a main control board, wherein a voltage judgment module and a first single chip microcomputer are integrated on the main control board, the voltage judgment module comprises a first resistor, a second resistor, a third resistor and a fourth resistor, the first resistor is connected with the input end of the first single chip microcomputer when the transmitter/receiver is in a transmitting mode, the second resistor, the third resistor and the fourth resistor are in an open circuit, the first resistor is connected with the second resistor in parallel when the transmitter/receiver is in a receiving mode, the third resistor is connected with the fourth resistor in parallel, and the first resistor, the second resistor, the third resistor and the fourth resistor are connected in series and are connected with the input end of the first single chip microcomputer;
when the device is used, the voltage output by the transmitter/receiver in the transmitting mode passes through the first resistor, then passes through the resistor of the cable to be tested, then is transmitted to the input resistor formed by connecting the third resistor and the fourth resistor of the receiver of another transmitter/receiver in the receiving mode in parallel, and is grounded, so that three equivalent resistors are formed to form a voltage dividing system, the transmitter/receiver in the transmitting mode detects the voltage of the first resistor and feeds the voltage back to the first single chip microcomputer, the first single chip microcomputer processes the voltage to obtain a result, and the result is output to the sound generating unit and the display unit to be alarmed and displayed; meanwhile, the other transmitter/receiver in the receiving mode detects the voltage on the third resistor or the fourth resistor and feeds the voltage back to the first single chip microcomputer, the first single chip microcomputer processes the voltage to obtain a result, and the result is output to the sound generating unit and the display unit to be alarmed and displayed;
the transmitter/receiver also comprises a shell, a sound production unit, a light-emitting unit, a display unit, an operation unit and a test line, wherein the shell is respectively provided with a charging socket and a test line socket, the shell is internally provided with a main control board, the sound production unit, the light-emitting unit, the display unit and the operation unit are embedded on the shell, the main control board is also integrally provided with a charging module, a battery, a voltage stabilizing module and a wireless module, the charging module is connected with the battery and is responsible for the functions of charging the battery and automatically stopping when the battery is fully charged, the battery is respectively connected with a first single chip microcomputer and the voltage stabilizing module and is responsible for the power supply of the first single chip microcomputer and the voltage stabilizing module, the voltage stabilizing module is connected with a voltage judging module and provides stable voltage, the voltage judging module is connected with the input end of the first single chip microcomputer, the output end of, the test wire socket is electrically connected with the voltage judgment module through a lead, the output end of the first single chip microcomputer is electrically connected with the sounding unit and the display unit through leads respectively, the operation unit is connected with the input end of the first single chip microcomputer through a lead, and the test wire is connected with the test wire socket in a plug-in manner;
the test line comprises a red probe test line and a black grounding crocodile clamp test line, the black grounding crocodile clamp is connected with a common ground wire, and the red probe test line is connected with a cable to be tested;
the checking tool further comprises a commander, the commander comprises a shell, a main control board, a sound production unit, a light emitting unit, a display unit and an operation unit, a charging socket is arranged on the shell, the main control board is arranged in the shell, the sound production unit and the light emitting unit are embedded on the shell, a charging module, a battery, two wireless modules and a second single chip microcomputer are integrally arranged on the main control board, the charging module is connected with the battery, the battery is respectively connected with the two wireless modules and is responsible for power supply of the two wireless modules, the two wireless modules are respectively connected with the second single chip microcomputer, the charging socket is electrically connected with the charging module through a lead, the charging module is electrically connected with the light emitting unit through a lead, the output end of the second single chip microcomputer is electrically connected with the sound production unit; one wireless module of the director is connected with the wireless module of one transmitter/receiver in a matching way, and the other wireless module of the director is connected with the wireless module of the other transmitter/receiver in a matching way;
the wireless module adopts a Bluetooth or Wi-Fi mode; the sounding unit adopts a buzzer or a loudspeaker; the light-emitting unit is an LED indicator light; the display unit adopts an LED digital tube or an LCD liquid crystal display screen or an OLED display screen; the operation unit adopts a dial switch or a button or an encoder; the charging module is formed by connecting an LTC4050 chip, a capacitor, a diode and a plurality of resistors in series or in parallel; the voltage stabilizing module is formed by connecting an LDO voltage stabilizing chip and a PMOS triode; the first single chip microcomputer and the second single chip microcomputer are matched with and edited with an algorithm program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810043100.0A CN108205093B (en) | 2018-01-17 | 2018-01-17 | Cable connection proofreading instrument for engineering construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810043100.0A CN108205093B (en) | 2018-01-17 | 2018-01-17 | Cable connection proofreading instrument for engineering construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108205093A CN108205093A (en) | 2018-06-26 |
| CN108205093B true CN108205093B (en) | 2020-05-08 |
Family
ID=62605265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810043100.0A Active CN108205093B (en) | 2018-01-17 | 2018-01-17 | Cable connection proofreading instrument for engineering construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108205093B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109358258A (en) * | 2018-09-14 | 2019-02-19 | 国网福建省电力有限公司 | Intelligent secondary circuit cable alignment device |
| CN109270393B (en) * | 2018-10-10 | 2024-04-05 | 国网宁夏电力有限公司固原供电公司 | Single pulse school line appearance |
| CN112858952B (en) * | 2020-11-04 | 2022-12-23 | 昆明船舶设备集团有限公司 | Rapid detection device and method for cable connectivity |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2826445Y (en) * | 2005-05-13 | 2006-10-11 | 魏玉生 | Intelligent line-checking machine |
| CN201421483Y (en) * | 2009-03-17 | 2010-03-10 | 魏桐国 | Digital direct-reading cable line checking device |
| CN201464591U (en) * | 2009-08-03 | 2010-05-12 | 王蔚 | Automatic line checker |
| CN101937042A (en) * | 2010-08-23 | 2011-01-05 | 中国科学院声学研究所 | System for detecting connectivity of bank cable and method thereof |
| CN206696365U (en) * | 2017-04-06 | 2017-12-01 | 魏桐国 | Intelligent cable correcting line machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5681409B2 (en) * | 2010-08-17 | 2015-03-11 | 矢崎総業株式会社 | Insulation state detection circuit for ungrounded power supply |
-
2018
- 2018-01-17 CN CN201810043100.0A patent/CN108205093B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2826445Y (en) * | 2005-05-13 | 2006-10-11 | 魏玉生 | Intelligent line-checking machine |
| CN201421483Y (en) * | 2009-03-17 | 2010-03-10 | 魏桐国 | Digital direct-reading cable line checking device |
| CN201464591U (en) * | 2009-08-03 | 2010-05-12 | 王蔚 | Automatic line checker |
| CN101937042A (en) * | 2010-08-23 | 2011-01-05 | 中国科学院声学研究所 | System for detecting connectivity of bank cable and method thereof |
| CN206696365U (en) * | 2017-04-06 | 2017-12-01 | 魏桐国 | Intelligent cable correcting line machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108205093A (en) | 2018-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108205093B (en) | Cable connection proofreading instrument for engineering construction | |
| CN201589826U (en) | Universal intelligent altered tone recognition network wire tracker | |
| CN204731364U (en) | A kind of portable polycore cable distribution tester | |
| CN210894646U (en) | Device for quickly aligning cable cores | |
| CN111983389A (en) | Device for detecting alignment and fault of multi-core cable | |
| CN112034388A (en) | Automatic wire harness detection system and detection method | |
| CN106019040A (en) | Optical-coupler electrical performance detection device | |
| CN104898009B (en) | Detection equipment and detection method for online sensing equipment | |
| CN202533541U (en) | Cable core electrical measurement verifying device | |
| CN210835198U (en) | Cable checking device | |
| CN201464591U (en) | Automatic line checker | |
| CN208921814U (en) | Electric car harness switching detection device | |
| CN108023786B (en) | Local area network test system | |
| CN210863958U (en) | Voice broadcast socket tester based on LCD display | |
| CN204789841U (en) | Cable tester | |
| CN112858881A (en) | Circuit fault overhauling device for electronic technology major | |
| CN108549044B (en) | Insulation line selection tester for direct current system of transformer substation | |
| CN209764976U (en) | Electric connector detector | |
| CN207263872U (en) | A kind of substation secondary cable sorter | |
| CN201583577U (en) | Universal meter capable of testing twisted pairs | |
| CN211786041U (en) | Wire connection testing device | |
| CN219608057U (en) | Motormeter check out test set | |
| CN211603506U (en) | Flat cable test circuit | |
| CN107894545B (en) | Intelligent detection method for portable equipment wiring and locomotive signal sensor | |
| CN203672982U (en) | Single-channel optoelectronic coupler testing instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221108 Address after: 226017 Room 1027, No. 188 Jiangguang Road, Jiangsu Nantong Suxitong Science and Technology Industrial Park, Nantong, Jiangsu Patentee after: Nantong Guoran Electronic Technology Co.,Ltd. Address before: 226500 room 1005B, Rugao science and Technology Pioneer Park, 6 building, 999 Wanshou Road, Chengnan street, Rugao, Nantong, Jiangsu Patentee before: NANTONG LIANKE ELECTRONIC TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right |