CN103178911A - Negative control terminal communication interface bidirectional tester based on electricity larceny preventing device - Google Patents
Negative control terminal communication interface bidirectional tester based on electricity larceny preventing device Download PDFInfo
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- CN103178911A CN103178911A CN2013100751519A CN201310075151A CN103178911A CN 103178911 A CN103178911 A CN 103178911A CN 2013100751519 A CN2013100751519 A CN 2013100751519A CN 201310075151 A CN201310075151 A CN 201310075151A CN 103178911 A CN103178911 A CN 103178911A
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Abstract
The invention discloses a negative control terminal communication interface bidirectional tester based on electricity larceny preventing device. The tester comprises a shell (2). A display (1), a state indicating lamp (3), an operating panel (4) and an RS485 wiring terminals are disposed in front of the shell (2), a battery case (6) is disposed at the bottom of the shell (2), a 220V AC (alternating current) power supply interface (7) is arranged on the side of the shell (2), and an electronic circuit formed by mounting electronic devices on a circuit board is arranged in the shell (2). Reliability of computer test is utilized, the requirements for convenient carrying and simple operation of field test are satisfied, communication failure can be checked easily, and help is provided for communication networks for collecting power application information of power users of national power grid companies.
Description
Technical field
The present invention relates to the two-way tester of negative control terminal communication interface based on the anti-electricity-theft device of load management system, is a kind of electronic instrument that is applicable to the RS485 interface communication Function detection of relevant device in State Grid Corporation of China's power consumer power information acquisition system.
Background technology
During State Grid Corporation of China's power consumer power information acquisition system is built, because the communication of RS485 bus is reliable, antijamming capability is strong, interface circuit and the characteristics such as wiring is simple, between the many equipment in system (such as concentrator, collector, ammeter etc.), the mode of RS485 bus is adopted in communication.Because RS485 interface connecting line has A line and the difference of B line; in the practice of construction process, due to the wiring of RS485 equipment, the situations such as the reversal connection of A B line, virtual connection, disconnecting often can occur; add the fault of RS485 equipment self; can there be a lot of obstacles in the foundation of RS485 bus, therefore, and the on-the-spot a large amount of manpower and materials investigations of input that need; and these obstacles; be not easy at the scene to be distinguished, after needing the scene to the test of RS485 devices communicating, just can distinguish.
At present, on-the-spot test has two kinds to the RS485 devices communicating, and the reliable method of the first is with the RS485 patchcord, the RS485 bus to be connected with computer, sends the copy reading stipulations by computer to tested equipment, and the equipment of checking returns a yard correctness and judges; The method that the second is commonly used is to change tested level equipment RS485 wiring direction, by upper level equipment, this equipment is advanced copy reading, and the equipment of checking returns a yard correctness and judges.First method is reliable, but needs the professional to operate, and testing tool is computer, once distinguishes failure, need to again change the RS485 wiring, again tests.Second method is more commonly used at the scene, needs instrument few, but the superior and the subordinate's equipment room back and forth, efficient is low.
Summary of the invention
The object of the invention is to: a kind of two-way tester of negative control terminal communication interface based on anti-electricity-theft device is provided, this tester utilizes the reliability of computer testing, satisfy simultaneously the demand easy to carry, simple to operate of field test, the investigation that more meets the communication failure of power consumer power information collection offers help for the communication network of State Grid Corporation of China's power consumer power information collection.
Technical solution of the present invention is: this tester comprises shell, there are display, status indicator lamp, guidance panel, RS485 binding post in the shell front portion, outer casing bottom has battery case, there is 220V AC power supplies interface the shell side, and enclosure has by electronic devices and components and is arranged on the electronic circuit that connects and composes on electronic circuit board.
Wherein, the electronic circuit of this tester comprises microprocessing unit, memory cell, display unit, communication unit and power unit; Microprocessing unit is comprised of microprocessor, operation push-button, buzzer, and operation push-button is connected with microprocessor through the general-purpose interface line with buzzer; Memory cell is comprised of data storage, and memory is connected with microprocessor by universal serial bus; Display unit is comprised of liquid crystal display, status indicator lamp, and liquid crystal display is connected with microprocessor by lcd controller, and status indicator lamp is connected with microprocessor through the general-purpose interface line; Communication unit is comprised of the RS485 interface circuit, communication unit by universal serial bus be connected with microprocessor; Power unit comprises 220V AC power supplies step-down rectifier, filtering, voltage stabilizing circuit and voltage booster circuit for battery.
Wherein, communication unit comprises two-way RS485 interface circuit, and one road RS485 interface circuit is connected with RS485 binding post forward, another road RS485 interface circuit and RS485 binding post Opposite direction connection; Two-way RS485 interface circuit is connected with microprocessor by universal serial bus, and the RS485 binding post is connected with tested equipment by two p-wires with crocodile clip.
Operation principle: the RS485 binding post is connected with the RS485 bus by the p-wire of two band crocodile clips (red test line, black test line each); The user is by manual operation, input equipment under test address, and tester sends multiple stipulations copy reading order with two-way RS485 interface circuit to equipment under test respectively automatically, and judging by the code situation of returning of equipment under test is polarity, agreement and baud rate; If store the equipment under test communication conditions that monitors in monitoring function in device, can judge main frame copy reading causes of mistake (485 polarity are wrong, agreement is wrong, baud rate is wrong and other wrong).
The present invention has the following advantages:
1, embedded micro-processor is realized full intelligent test, and is stable, reliable.
2, test is flexible, convenient, fast, has the test functions such as automatic detection, manually detection, Real-Time Monitoring.
3, carry mass storage, store test results, real-time parameter.
4, the wiring polarity of automatic identification RS485 wiring.
5, liquid crystal display, beautiful interface is easy to read.
6, civil power, battery dual power supply adapt to the varying environment requirement
7, compact appearance is easy to carry, and is simple to operate, is easy to learn and use.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is the front view of tester of the present invention.
Fig. 2 is the right view of tester of the present invention.
Fig. 3 is the electronic circuit theory diagram of tester of the present invention.
Fig. 4 is the microprocessing unit electronic circuit schematic diagram of invention tester of dwelling.
Fig. 5 is the display unit electronic circuit schematic diagram of tester of the present invention.
Fig. 6 is the communication unit electronic circuit schematic diagram of tester of the present invention.
Embodiment
As shown in Figure 1, 2, this tester comprises shell 2, there are display 1, status indicator lamp 3, guidance panel 4, RS485 binding post 5 in shell 2 front portions, battery case 6 is arranged at shell 2 bottoms, there is 220V AC power supplies interface 7 shell 2 sides, and shell 2 inside have by electronic devices and components and are arranged on the electronic circuit that connects and composes on electronic circuit board.
As shown in Fig. 3-6, the electronic circuit of this tester comprises microprocessing unit, memory cell, display unit, communication unit and power unit; Microprocessing unit is comprised of microprocessor, operation push-button, buzzer, and operation push-button is connected with microprocessor through the general-purpose interface line with buzzer; Memory cell is comprised of data storage, and memory is connected with microprocessor by universal serial bus; Display unit is comprised of liquid crystal display, status indicator lamp, and liquid crystal display is connected with microprocessor by lcd controller, and status indicator lamp is connected with microprocessor through the general-purpose interface line; Communication unit is comprised of the RS485 interface circuit, communication unit by universal serial bus be connected with microprocessor; Power unit comprises 220V AC power supplies step-down rectifier, filtering, voltage stabilizing circuit and voltage booster circuit for battery.
Wherein, communication unit comprises two-way RS485 interface circuit, and one road RS485 interface circuit is connected with RS485 binding post forward, another road RS485 interface circuit and RS485 binding post Opposite direction connection; Two-way RS485 interface circuit is connected with microprocessor by universal serial bus, and the RS485 binding post is connected with tested equipment by two p-wires with crocodile clip.
Wherein, microprocessor U4 adopts auspicious husky 78F0526A or meaning to send out the STM8S207 single-chip microcomputer; Operation push-button K11～K13, K21～K23, K31～K33, K41～K43 are connected with microprocessor, by microprocessor to the operation push-button timing scan; Display lcd 1 is connected with microprocessor by lcd controller U6; RS485 interface circuit U201, U202 and binding post JX112 form the RS485 interface test circuitry, and transient suppressor TVS1～TVS3 and thermistor RT200, RT201 form interface protective circuit, and resistance R 209 is the bus balance resistance; RS485 interface circuit U201 is connected with binding post JX112 forward, RS485 interface circuit U202 and binding post JX112 Opposite direction connection, binding post JX112 is connected with the RS485 bus by the p-wire of two band crocodile clips (red test line, black test line each).
During test, the user can be by manual operation, input equipment under test address, and tester sends multiple stipulations copy reading order with two-way RS485 interface circuit to equipment under test respectively automatically, and judging by the code situation of returning of equipment under test is polarity, agreement and baud rate; If store the equipment under test communication conditions that monitors in monitoring function in device, can judge main frame copy reading causes of mistake (485 polarity are wrong, agreement is wrong, baud rate is wrong and other wrong).
Claims (3)
1. based on the two-way tester of negative control terminal communication interface of anti-electricity-theft device, this tester comprises shell (2), it is characterized in that: there are display (1), status indicator lamp (3), guidance panel (4), RS485 binding post (5) in shell (2) front portion, battery case (6) is arranged at shell (2) bottom, there is 220V AC power supplies interface (7) shell (2) side, and shell (2) inside has by electronic devices and components and is arranged on the electronic circuit that connects and composes on electronic circuit board; Described electronic circuit comprises microprocessing unit, memory cell, display unit, communication unit and power unit; Microprocessing unit is comprised of microprocessor, operation push-button, buzzer, and operation push-button is connected with microprocessor through the general-purpose interface line with buzzer; Memory cell is comprised of data storage, and memory is connected with microprocessor by universal serial bus; Display unit is comprised of liquid crystal display, status indicator lamp, and liquid crystal display is connected with microprocessor by lcd controller, and status indicator lamp is connected with microprocessor through the general-purpose interface line; Communication unit is comprised of the RS485 interface circuit, communication unit by universal serial bus be connected with microprocessor; Power unit comprises 220V AC power supplies step-down rectifier, filtering, voltage stabilizing circuit and voltage booster circuit for battery.
2. the two-way tester of negative control terminal communication interface based on anti-electricity-theft device according to claim 1, it is characterized in that: communication unit comprises two-way RS485 interface circuit, one road RS485 interface circuit is connected with RS485 binding post forward, another road RS485 interface circuit and RS485 binding post Opposite direction connection; Two-way RS485 interface circuit is connected with microprocessor by universal serial bus, and the RS485 binding post is connected with tested equipment by two p-wires with crocodile clip.
3. the two-way tester of negative control terminal communication interface based on anti-electricity-theft device according to claim 1 is characterized in that: wherein, microprocessor U4 adopts auspicious husky 78F0526A or meaning to send out a STM8S207 single-chip microcomputer; Operation push-button K11～K13, K21～K23, K31～K33, K41～K43 are connected with microprocessor, by microprocessor to the operation push-button timing scan; Display lcd 1 is connected with microprocessor by lcd controller U6; RS485 interface circuit U201, U202 and binding post JX112 form the RS485 interface test circuitry, and transient suppressor TVS1～TVS3 and thermistor RT200, RT201 form interface protective circuit, and resistance R 209 is the bus balance resistance; RS485 interface circuit U201 is connected with binding post JX112 forward, RS485 interface circuit U202 and binding post JX112 Opposite direction connection, and binding post JX112 is connected with the RS485 bus by two p-wires with crocodile clip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100751519A CN103178911A (en) | 2013-03-07 | 2013-03-07 | Negative control terminal communication interface bidirectional tester based on electricity larceny preventing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100751519A CN103178911A (en) | 2013-03-07 | 2013-03-07 | Negative control terminal communication interface bidirectional tester based on electricity larceny preventing device |
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| CN103178911A true CN103178911A (en) | 2013-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013100751519A Pending CN103178911A (en) | 2013-03-07 | 2013-03-07 | Negative control terminal communication interface bidirectional tester based on electricity larceny preventing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344858A (en) * | 2013-06-29 | 2013-10-09 | 国家电网公司 | Method and device for testing meter reading port of intelligent electric meter |
| CN104952239A (en) * | 2014-03-28 | 2015-09-30 | 惠州学院 | Testing device and testing method for collector |
| CN105160861A (en) * | 2015-10-15 | 2015-12-16 | 国网山东省电力公司聊城供电公司 | Reliable transmission device of micro-power signal and application of reliable transmission device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255767A (en) * | 2010-05-21 | 2011-11-23 | 蔡华 | Multifunctional handheld communication tester |
| CN102353927A (en) * | 2011-09-25 | 2012-02-15 | 安徽省电力公司宣城供电公司 | Filed tester for acquisition system for electricity consumption information and test method thereof |
-
2013
- 2013-03-07 CN CN2013100751519A patent/CN103178911A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255767A (en) * | 2010-05-21 | 2011-11-23 | 蔡华 | Multifunctional handheld communication tester |
| CN102353927A (en) * | 2011-09-25 | 2012-02-15 | 安徽省电力公司宣城供电公司 | Filed tester for acquisition system for electricity consumption information and test method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344858A (en) * | 2013-06-29 | 2013-10-09 | 国家电网公司 | Method and device for testing meter reading port of intelligent electric meter |
| CN104952239A (en) * | 2014-03-28 | 2015-09-30 | 惠州学院 | Testing device and testing method for collector |
| CN105160861A (en) * | 2015-10-15 | 2015-12-16 | 国网山东省电力公司聊城供电公司 | Reliable transmission device of micro-power signal and application of reliable transmission device |
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Application publication date: 20130626 |