CN103245866A - Portable telecontrol digital channel testing device and telecontrol digital channel testing method - Google Patents
Portable telecontrol digital channel testing device and telecontrol digital channel testing method Download PDFInfo
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- CN103245866A CN103245866A CN2013102160886A CN201310216088A CN103245866A CN 103245866 A CN103245866 A CN 103245866A CN 2013102160886 A CN2013102160886 A CN 2013102160886A CN 201310216088 A CN201310216088 A CN 201310216088A CN 103245866 A CN103245866 A CN 103245866A
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Abstract
The invention discloses a portable telecontrol digital channel testing device and a telecontrol digital channel testing method. The portable telecontrol digital channel testing device comprises a display module, an input module, a central processing unit, a serial communicating module, a power supply and an RS-232 interface; the central processing unit is connected with the power supply, the input module, the display module and the serial communicating module respectively, the input module provides input signals for the central processing unit outputting the signals to the display module, the central processing module and the serial communicating module are subjected to data exchange, the serial communicating module is connected with the RS-232 interface, and serial communicating module and the RS-232 interface are subjected to data exchange. Compared with the traditional mode of adopting a universal voltage meter for testing a mobile digital channel, the testing method is simpler, the testing outcome is more accurate, and the work efficiency is obviously improved.
Description
Technical field
The present invention relates to the power communication field, a kind of portable telemechanical digital channel proving installation and telemechanical digital channel method of testing are applicable to the test of Operation of Electric Systems digital channel specifically.
Background technology
In power automatic system, the telemechanical digital channel is the remote motion signal transmission channels between a kind of transformer station and the scheduling station, and along with the raising of grid automation and intelligent level, the quantity of telemechanical digital channel constantly increases.The telemechanical digital channel adopts RS-232 interface, by sending and receiving, three lines form, transmit digital code stream on the passage.Test to the telemechanical digital channel is to adopt multimeter to measure channel voltage at present.When using multimeter test telemechanical digital channel, need to measure sending and receiving with respect to the magnitude of voltage of ground wire in main website and transformer station respectively, judge by the sending and receiving earth potential difference whether passage is normal.Its weak point is: this method exists long, problems such as reliability is not high, the judgement of need artificial experience of test duration, can't make test accurately to the telemechanical digital channel fast and efficiently.
Summary of the invention
The object of the present invention is to provide a kind ofly for the performance test of telemechanical digital channel, can realize the test of the unobstructed property testing of passage and error performance, shorten the test duration, the portable telemechanical digital channel proving installation of increasing work efficiency.
In order to reach above purpose, the technical solution adopted in the present invention is: this portable telemechanical digital channel proving installation, comprise display module, load module, CPU (central processing unit), serial communication modular, power supply and RS-232 interface, CPU (central processing unit) is connected with power supply, be CPU (central processing unit) power supply by 9 volts of power supplys, it is characterized in that: described CPU (central processing unit) respectively with load module, display module is connected with serial communication modular, load module provides input signal for CPU (central processing unit), CPU (central processing unit) outputs to display module with signal, CPU (central processing unit) and serial communication modular carry out exchanges data, serial communication modular is connected with RS-232 interface, and serial communication modular and RS-232 interface are carried out exchanges data.
Another object of the present invention is to provide a kind of unobstructed property testing and error performance test that can realize passage, shortens the telemechanical digital channel method of testing of test duration.
In order to reach above purpose, the technical solution adopted in the present invention is: this telemechanical digital channel method of testing is characterized in that: it may further comprise the steps finishes:
(1), with the far-end short circuit of telemechanical digital channel, form telemechanical digital channel loop;
(2), the sending and receiving of the RS-232 interface of portable telemechanical digital channel proving installation are linked to each other with the sending and receiving of telemechanical digital channel near-end respectively, start portable telemechanical digital channel proving installation and enter telemechanical digital channel test function;
(3), portable telemechanical digital channel proving installation sends a digital signal that comprises the preset characters string by RS-232 interface to the telemechanical digital channel, portable telemechanical digital channel proving installation enters the wait receiving state signal simultaneously, and begins timing in 3 seconds; If in 3 seconds, do not receive above-mentioned digital signal, illustrate that then this telemechanical digital channel is obstructed; If can normally receive above-mentioned digital signal, illustrate that then this telemechanical digital channel is unobstructed;
(4), the character string that receives by further contrast of portable telemechanical digital channel proving installation and the character string of transmission, calculate the bit error rate of telemechanical digital channel, thereby obtain the error performance of this telemechanical digital channel.
Beneficial effect of the present invention is: the present invention compares with the mode that tradition adopts multimeter survey voltage to test the telemechanical digital channel, and method of testing is easier, test result is more accurate, has obviously improved work efficiency.
Description of drawings
Fig. 1 is structural representation of the present invention.
Among the figure: 1, display module; 2, load module; 3, CPU (central processing unit); 4, serial communication modular; 5, power supply; 6, RS-232 interface.
Embodiment
Make the present invention with reference to accompanying drawing 1.This portable telemechanical digital channel proving installation, comprise display module 1, load module 2, CPU (central processing unit) 3, serial communication modular 4, power supply 5 and RS-232 interface 6, CPU (central processing unit) 3 is connected with power supply 5, be CPU (central processing unit) 3 power supply by 9 volts of power supplys 5, it is characterized in that: described CPU (central processing unit) 3 respectively with load module 2, display module 1 is connected with serial communication modular 4, load module 2 provides input signal for CPU (central processing unit) 3, CPU (central processing unit) 3 outputs to display module 1 with signal, CPU (central processing unit) 3 is carried out exchanges data with serial communication modular 4, serial communication modular 4 is connected with RS-232 interface 6, and serial communication modular 4 carries out exchanges data with RS-232 interface 6.
CPU (central processing unit) 3 is responsible for the data operation task, its internal memory load module code, the key commands of CPU (central processing unit) 3 response load modules 2, control serial communication modular 4 transmitt or receive signals, and the liquid crystal display that corresponding character passes to display module 1 shown.
Power supply 5 adopts internal battery or the power supply of external power supply form, supply voltage 9V, and it is the power supply of this device that power supply 5 inner employing mu balanced circuits convert the 9V input voltage to the 5V output voltage.
Load module 2 provides user interface, comprises affirmation, is shifted, revises, resets and withdraws from five independent buttons.
Serial communication modular 4 adopts MAX3232EPE serial communication switch chip additional peripheral circuitry to constitute, and realizes that under the control of CPU (central processing unit) 3 data send or receive.
Display module 1 adopts Chinese LCDs, is used for the user interface that presents System menu, straightforward is provided.
Utilize the principle of portable telemechanical digital channel proving installation internal loopback digital signal to realize unobstructed property testing and the error performance test of telemechanical digital channel.Transformer station's side short circuit of telemechanical digital channel is formed loop, send a digital signal by RS-232 interface 6 to the telemechanical digital channel in the main website side, this digital signal comprises the character string that is formed by a succession of default numeral and monogram, as " ab010101 ", this digital signal is passed portable telemechanical digital channel proving installation transmitting terminal again back by the telemechanical digital channel through transformer station side ring road, can correctly receive this digital signal as portable telemechanical digital channel proving installation, as " ab010101 ", prove that then the telemechanical digital channel is unobstructed; If do not receive above-mentioned digital signal, illustrate that then this telemechanical digital channel is obstructed; As receive " ab001001 ", by the character string of contrast transmission and the character string of reception, can calculate the error performance of passage.
This telemechanical digital channel method of testing is characterized in that: it may further comprise the steps finishes:
(1), with the far-end short circuit of telemechanical digital channel, form telemechanical digital channel loop;
(2), the sending and receiving of the RS-232 interface 6 of portable telemechanical digital channel proving installation are linked to each other with the sending and receiving of telemechanical digital channel near-end respectively, start portable telemechanical digital channel proving installation and enter telemechanical digital channel test function;
(3), portable telemechanical digital channel proving installation sends a digital signal that comprises the preset characters string by RS-232 interface 6 to the telemechanical digital channel, portable telemechanical digital channel proving installation enters the wait receiving state signal simultaneously, and begins timing in 3 seconds; If in 3 seconds, do not receive above-mentioned digital signal, illustrate that then this telemechanical digital channel is obstructed; If can normally receive above-mentioned digital signal, illustrate that then this telemechanical digital channel is unobstructed;
(4), the character string that receives by further contrast of portable telemechanical digital channel proving installation and the character string of transmission, calculate the bit error rate of telemechanical digital channel, thereby obtain the error performance of this telemechanical digital channel.
Claims (2)
1. portable telemechanical digital channel proving installation, comprise display module (1), load module (2), CPU (central processing unit) (3), serial communication modular (4), power supply (5) and RS-232 interface (6), CPU (central processing unit) (3) is connected with power supply (5), be CPU (central processing unit) (3) power supply by 9 volts of power supplys (5), it is characterized in that: described CPU (central processing unit) (3) respectively with load module (2), display module (1) is connected with serial communication modular (4), load module (2) provides input signal for CPU (central processing unit) (3), CPU (central processing unit) (3) outputs to display module (1) with signal, CPU (central processing unit) (3) is carried out exchanges data with serial communication modular (4), serial communication modular (4) is connected with RS-232 interface (6), and serial communication modular (4) carries out exchanges data with RS-232 interface (6).
2. telemechanical digital channel method of testing, it is characterized in that: it may further comprise the steps finishes:
(1), with the far-end short circuit of telemechanical digital channel, form telemechanical digital channel loop;
(2), the sending and receiving of the RS-232 interface of portable telemechanical digital channel proving installation are linked to each other with the sending and receiving of telemechanical digital channel near-end respectively, start portable telemechanical digital channel proving installation and enter telemechanical digital channel test function;
(3), portable telemechanical digital channel proving installation sends a digital signal that comprises the preset characters string by RS-232 interface to the telemechanical digital channel, portable telemechanical digital channel proving installation enters the wait receiving state signal simultaneously, and begins timing in 3 seconds; If in 3 seconds, do not receive above-mentioned digital signal, illustrate that then this telemechanical digital channel is obstructed; If can normally receive above-mentioned digital signal, illustrate that then this telemechanical digital channel is unobstructed;
(4), the character string that receives by further contrast of portable telemechanical digital channel proving installation and the character string of transmission, calculate the bit error rate of telemechanical digital channel, thereby obtain the error performance of this telemechanical digital channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013102160886A CN103245866A (en) | 2013-06-03 | 2013-06-03 | Portable telecontrol digital channel testing device and telecontrol digital channel testing method |
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| CN2013102160886A CN103245866A (en) | 2013-06-03 | 2013-06-03 | Portable telecontrol digital channel testing device and telecontrol digital channel testing method |
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| CN103944260A (en) * | 2014-04-10 | 2014-07-23 | 国家电网公司 | Information channel remote monitoring device |
| CN104049162A (en) * | 2014-06-12 | 2014-09-17 | 吉林大学 | Device and method for testing noise tolerance characteristic of driving voltage of waveguide optical switch |
| CN108289045A (en) * | 2017-12-26 | 2018-07-17 | 国网山东省电力公司滨州供电公司 | A kind of RS-232 digital channels detection device |
| CN110533984A (en) * | 2019-09-29 | 2019-12-03 | 广东电网有限责任公司 | A kind of practical operation simulator of four lines telemechanical business |
| CN112367680A (en) * | 2020-11-03 | 2021-02-12 | 南方电网数字电网研究院有限公司 | External communication test method and device based on intelligent electric meter and computer equipment |
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| CN112367680A (en) * | 2020-11-03 | 2021-02-12 | 南方电网数字电网研究院有限公司 | External communication test method and device based on intelligent electric meter and computer equipment |
| CN112367680B (en) * | 2020-11-03 | 2023-12-12 | 南方电网数字电网研究院有限公司 | External communication test method and device based on intelligent ammeter and computer equipment |
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Application publication date: 20130814 |