CN109888926B - Portable transformer operation and maintenance terminal - Google Patents
Portable transformer operation and maintenance terminal Download PDFInfo
- Publication number
- CN109888926B CN109888926B CN201910292332.4A CN201910292332A CN109888926B CN 109888926 B CN109888926 B CN 109888926B CN 201910292332 A CN201910292332 A CN 201910292332A CN 109888926 B CN109888926 B CN 109888926B
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- chip
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- module
- conversion circuit
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- 238000012423 maintenance Methods 0.000 title claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 72
- 238000006243 chemical reaction Methods 0.000 claims abstract description 29
- 238000002955 isolation Methods 0.000 claims abstract description 28
- 238000004891 communication Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000008376 long-term health Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/40—Display of information, e.g. of data or controls
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a portable substation operation and maintenance terminal which comprises a test chip, a switching circuit, a first protection/conversion circuit, a second protection/conversion circuit, an IIC-to-IO module, a first isolation chip, a second isolation chip and a CPU module, wherein the first protection/conversion circuit is connected to the test chip through the switching circuit, the second protection/conversion circuit is connected to the test chip, the test chip is connected with the IIC-to-IO module and the second isolation chip, the IIC-to-IO module is connected to the CPU module through the isolation chip, the second isolation chip is connected to the CPU module, the switching circuit is also connected between the IIC-to-IO module and the test chip, the first protection/conversion circuit is used for measuring voltage, resistance, diode and capacitance, and the second protection/conversion circuit is used for measuring current. The invention adopts the test chip to test, gets rid of the traditional control by the knob, has more intelligent and no mechanical misoperation, and controls the display by the CPU module, so that the display interface can be more flexible, diversified, rich and humanized.
Description
Technical Field
The invention relates to a portable substation operation and maintenance terminal, and belongs to the technical field of portable operation and maintenance equipment.
Background
At present, the operation, maintenance and overhaul field work of an intelligent substation carries a plurality of types of measurement and overhaul equipment, such as a universal meter, an infrared imager, a network communication tester, an optical fiber meter pen and the like, and also needs to carry mobile operation platform record related test data, so that the intelligent substation has single function and a plurality of functions, the field work often has the defects of reduced working quality or delay caused by incomplete tool or tool leakage, incomplete record of test data record, low data quality, difficult development of long-term health degree analysis aiming at equipment state and the like.
Disclosure of Invention
The invention aims to solve the technical problems that: the portable substation operation and maintenance terminal is provided to solve the problems existing in the prior art.
The technical scheme adopted by the invention is as follows: the portable power transformation operation and maintenance terminal comprises a test chip, a switching circuit, a first protection/conversion circuit, a second protection/conversion circuit, an IIC-to-IO module, a first isolation chip, a second isolation chip and a CPU module, wherein the first protection/conversion circuit is connected to the test chip through the switching circuit, the second protection/conversion circuit is connected to the test chip, the test chip is connected with the IIC-to-IO module and the second isolation chip, the IIC-to-IO module is connected to the CPU module through the second isolation chip, the switching circuit is further connected between the IIC-to-IO module and the test chip, the first protection/conversion circuit is used for measuring voltage, resistance, diodes and capacitance, and the second protection/conversion circuit is used for measuring current.
Preferably, the CPU module is connected with a display screen.
Preferably, the test chip is connected with a DC/DC circuit for supplying power.
Preferably, two ends of the isolation chip are connected to the test chip and the CPU module through serial ports.
The invention has the beneficial effects that: compared with the prior art, the invention has the following effects:
(1) The invention adopts the CPU module to control the display and carries the android system, the display interface can be more flexible, beautiful, rich and humanized, and adopts the CPU module to control the test mode of the test chip through digital communication, thereby getting rid of the control of the traditional mechanical knob, being more intelligent and efficient, avoiding the phenomenon of misoperation of the machine and being not limited by the service life of the machine;
(2) An isolation chip I is inserted between the CPU module and the IIC-to-IO module and used for isolating low-voltage and high-voltage signals, so that the influence between the signals is avoided;
(3) A switching circuit is arranged to adapt to the input of different test mode signals;
(4) Before the input signals enter the test chip, a protection/conversion circuit is additionally arranged, so that the function of preventing the input signals from overvoltage and overcurrent damage is realized, the isolation between low-voltage and high-voltage signals is realized, and the influence between the signals is avoided;
(5) An isolation chip II is additionally arranged between the serial port communication of the test chip and the serial port communication of the CPU module, so that the influence between low-voltage and high-voltage signals is avoided;
(6) The test chip is powered by the DC/DC circuit, and the circuit plays an isolating role while powering, so that other circuits are not affected.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic diagram of a remote connection of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific examples.
Examples: as shown in fig. 1-2, a portable substation operation and maintenance terminal comprises a test chip, a switching circuit, a first protection/conversion circuit, a second protection/conversion circuit, an IIC-to-IO module, a first isolation chip, a second isolation chip and a CPU module, wherein the first protection/conversion circuit is connected to the test chip through the switching circuit, the second protection/conversion circuit is connected to the test chip, the test chip is connected with the IIC-to-IO module and the second isolation chip, the IIC-to-IO module is connected to the CPU module through the first isolation chip, the second isolation chip is connected to the CPU module, the switching circuit is also connected between the IIC-to-IO module and the test chip, the first protection/conversion circuit is used for measuring voltage, resistance, diode and capacitance, and the second protection/conversion circuit is used for measuring current.
Preferably, the CPU module is connected with a display screen.
Preferably, the test chip is connected with a DC/DC circuit for supplying power.
Preferably, two ends of the isolation chip are connected to the test chip and the CPU module through serial ports.
The CPU module sets the test chip through the IIC interface through the IIC-to-IO module, and the setting mode is divided into: the method comprises the following steps of direct current/alternating current voltage test, direct current/alternating current test, resistance test, capacitance test, diode test and on-off test, wherein an isolation chip I is inserted between a CPU module and an IIC-to-IO module and used for isolating low-voltage and high-voltage signals, so that the influence between the signals is avoided; the switching circuit is also arranged at the same time of arranging the test chip, so that the input of different test mode signals is adapted; before an input signal enters the test chip, a protection/conversion circuit is additionally arranged, so that the function of preventing the input signal from damaging the circuit by overvoltage and overcurrent is achieved; after the mode of the test chip is set, a test function for an input signal is started, the test chip sends test data and current mode information to the CPU module through the serial port, and the CPU module displays the corresponding test data through the display screen according to the current mode; an isolation chip II is additionally arranged between the serial port communication of the test chip and the serial port communication of the CPU module, so that the influence between low-voltage and high-voltage signals is avoided; the test chip is powered by a DC/DC circuit which also serves as an isolation.
The operation and maintenance terminal can be connected to the remote terminal in a wireless mode, so that remote monitoring is realized.
The CPU module sends configuration information through an IIC interface, the configuration information is isolated by a signal of the first isolation chip, and then the configuration information is finally transmitted to the test chip and the switching circuit through signal conversion of the IIC-to-IO module.
The configuration information modes are divided into: direct current/alternating voltage test, direct current/alternating current test, resistance test, capacitance test, diode test and on-off test.
After receiving the configuration information, the switching circuit switches to two testing modes of an external source or an internal source according to the corresponding mode. The external source test mode aims at voltage test, namely, an external input voltage signal is taken as a source, and the value of the source is tested; the internal source test mode is aimed at resistance, capacitance and diode test, namely, a voltage source is provided in the circuit, and the resistance value, capacitance value or diode value is measured according to the voltage value of the tested signal end.
After receiving the configuration information, the test chip configures the working state to a corresponding mode. The test chip sends the tested data and the current mode value through the serial port, and the data and the current mode value are transmitted to the CPU module after being isolated by the signal of the isolating chip II. And finally, the CPU module receives the mode value and the data according to the serial port and displays the mode value and the data into columns corresponding to the android interface of the display screen.
The first protection/conversion circuit and the second protection/conversion circuit convert and protect the input tested signals, so that the tested signals cannot damage the circuit due to overvoltage and overcurrent, and the adjusted tested information is allowed to be transmitted to the test chip. Two circuit branches are designed according to different test objects. The protection/conversion circuit I is designed for voltage, resistance, capacitance and diode tests; the protection/conversion circuit II is designed for current test.
The DC/DC circuit supplies power to the test chip and the peripheral circuit, and has the functions of isolation and protection besides the function of power supply. The method has the advantages of preventing the risk of series-flow electric shock caused by overlarge current of the measured voltage.
The display screen adopts a high-definition liquid crystal screen which is mainstream at present, has a touch function and accords with the operation habit of current people.
As shown in fig. 2, the device establishes connection with the background server through the intranet wireless WIFI to communicate, and can upload test data in real time for the server to save and review.
The foregoing is merely illustrative of the present invention, and the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the scope of the present invention, and therefore, the scope of the present invention shall be defined by the scope of the appended claims.
Claims (4)
1. A portable transformer operation and maintenance terminal is characterized in that: the protection/conversion circuit I is connected to the test chip through the switching circuit, the protection/conversion circuit II is connected to the test chip, the test chip is connected with the IIC-to-IO module and the isolation chip II, the IIC-to-IO module is connected to the CPU module through the isolation chip, the isolation chip II is connected to the CPU module, the switching circuit is also connected between the IIC-to-IO module and the test chip, the protection/conversion circuit I is used for measuring voltage, resistance, diode and capacitance, and the protection/conversion circuit II is used for measuring current.
2. The portable substation operation and maintenance terminal according to claim 1, wherein: the CPU module is connected with a display screen.
3. The portable substation operation and maintenance terminal according to claim 1, wherein: the test chip is connected with a DC/DC circuit for supplying power.
4. The portable substation operation and maintenance terminal according to claim 1, wherein: two ends of the isolation chip are connected to the test chip and the CPU module through serial ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910292332.4A CN109888926B (en) | 2019-04-12 | 2019-04-12 | Portable transformer operation and maintenance terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910292332.4A CN109888926B (en) | 2019-04-12 | 2019-04-12 | Portable transformer operation and maintenance terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109888926A CN109888926A (en) | 2019-06-14 |
| CN109888926B true CN109888926B (en) | 2023-12-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910292332.4A Active CN109888926B (en) | 2019-04-12 | 2019-04-12 | Portable transformer operation and maintenance terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109888926B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203949981U (en) * | 2014-05-30 | 2014-11-19 | 北京航天光华电子技术有限公司 | A kind of multichannel DC/DC isolated converter test macro |
| CN205844498U (en) * | 2016-07-15 | 2016-12-28 | 安徽南瑞继远电网技术有限公司 | A kind of high accuracy battery being applicable to intelligent substation patrols and examines measuring circuit |
| CN209545253U (en) * | 2019-04-12 | 2019-10-25 | 贵州电网有限责任公司 | A kind of portable power transformation O&M terminating circuit structure |
-
2019
- 2019-04-12 CN CN201910292332.4A patent/CN109888926B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203949981U (en) * | 2014-05-30 | 2014-11-19 | 北京航天光华电子技术有限公司 | A kind of multichannel DC/DC isolated converter test macro |
| CN205844498U (en) * | 2016-07-15 | 2016-12-28 | 安徽南瑞继远电网技术有限公司 | A kind of high accuracy battery being applicable to intelligent substation patrols and examines measuring circuit |
| CN209545253U (en) * | 2019-04-12 | 2019-10-25 | 贵州电网有限责任公司 | A kind of portable power transformation O&M terminating circuit structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109888926A (en) | 2019-06-14 |
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