CN102539967B - Signal collecting and driving testing device - Google Patents
Signal collecting and driving testing device Download PDFInfo
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- CN102539967B CN102539967B CN201110452455.3A CN201110452455A CN102539967B CN 102539967 B CN102539967 B CN 102539967B CN 201110452455 A CN201110452455 A CN 201110452455A CN 102539967 B CN102539967 B CN 102539967B
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Abstract
The invention relates to the technical field of signal control and provides a signal collecting and driving testing device. The testing device comprises a control terminal, a signal collecting card, a signal driving card, a relay collecting late, a relay driving plate and a guide rail type AC-DC (Alternating Current-Direct Current) power source. In the technical scheme of the invention, a relay dry node manner is adopted for ensuring the polarity of a switching value signal between tested equipment and testing equipment and/or power not to be limited by an opposite side; a relay input-output manner is adopted for realizing the electrical isolation between the tested equipment the testing equipment; in addition, by using a filter circuit, the microsecond-level signal collection is realized and is not affected by a microsecond-level pulse interference signal; and finally the amount of collecting and driving switching value signals of the signal collecting and driving testing device can be freely adjusted and configured; and the signal collecting and driving testing device can simulate gravity type relay equipment of a railway system and is small in volume and flexible to realize.
Description
Technical field
The present invention relates to signal controlling technical field, particularly the proving installation of a kind of signals collecting and driving.
Background technology
In signal controlling field, especially relate in the extensive control system of track traffic etc., because collection and the switching value number of driving that signalling arrangement control system in engineering project is used are various, often devices from different manufacturers need to be carried out to the system integration, just can complete the demand of whole system.It is that the element design such as application relay become the mode of dry contact to carry out collection and the driving of signaling switch amount that current modal collection drives interface, this design can effectively be isolated power-supply system each other between distinct device, making signals collecting and drive the impact of the electric voltage exception undesired signal etc. that can not be subject to public power or ground end, is a kind of safe and reliable signal driver acquisition mode.
But switching value signals collecting and driving based on above-mentioned dry contact mode; if carrying out safe operation, need to test signals collecting and driving cooperating equipment interface; consider that interface quantity is huge; conventionally can take the larger test space; thereby need to be according to the proving installation of the equipment situation self-developing emulation of system, its equipment framework complicated difficult is to realize.
In prior art, general Usage data collection card carries out the test of multi-way switching values signals collecting and driving, as shown in Figure 1, common data collecting plate card is generally that the signal of the output switch amount of tested equipment is directly introduced, and select mode to be altogether connected testing apparatus and tested equipment, although this mode is simple and easy to connect, if but analog input card breaks down or ground wire produces crosstalk information, not only can damage the function of capture card self, also may cause damage to tested equipment simultaneously.
In addition, although common data collecting plate card picking rate is higher, the signal of Microsecond grade can collect, but in field of track traffic, when switching value signal output used, be conventionally all furnished with signal self check pulse, general analog input card cannot shield this pulse signal, very easily produces and crosstalks.And if higher collection and the drive unit (being generally large-scale gravity type relay) of employing hardware degree tested, the power needing in the time of the signal of test multichannel is large and strict to test site requirement, limited by these, which implements comparatively difficulty, and expense is higher.
Summary of the invention
(1) technical matters that will solve
For the above-mentioned defect of prior art, the present invention, in order to solve the technical matters of the test poor effect of multi-way switching values signals collecting and driving in prior art, provides the proving installation of a kind of signals collecting and driving.
(2) technical scheme
For achieving the above object, the present invention adopts following technical scheme:
A proving installation for signals collecting and driving, described device comprises: control terminal, data acquisition card, signal driver card, relay collection plate, relay drive plate and guide tracked AC-DC power supply; Wherein,
Control terminal is configured and controls equipment under test input/output switching amount signal;
Data acquisition card gathers the switching value signal condition from the output of relay collection plate, and the switching value signal condition collecting is transferred to control terminal, and control terminal is tested control by switch amount status information;
The switching value signal output state order that control terminal sends according to test demand for control is received in signal driver clamping, then switching value signal output state is transferred to relay drive plate;
Relay collection plate gathers the switching value signal condition from equipment under test output, and the switching value signal condition collecting is transferred to data acquisition card;
Relay drive plate receives the switching value signal output state from signal driver card, and output switch amount signal is to equipment under test;
Guide rail power supply is realized the power supply to relay collection plate, relay drive plate, data acquisition card, signal driver card.
Preferably, described relay collection plate comprises:
Input interface module: be connected with equipment under test switching value output interface, gather equipment under test output switch amount signal condition;
Filtration module: connect described input interface module and relay module, the switching value signal collecting is carried out to filtering processing;
Relay module: realize the transmission of switching value signal condition between data acquisition card and equipment under test, and realize the electrical isolation between the two;
Gather switching value signal designation module: the switching value signal that adopts light emitting diode to collect data acquisition card is indicated;
Output interface module: be connected with signals collecting card interface, the switching value signal condition collecting is transferred to data acquisition card.
Preferably, described filtration module comprises 1 diode and 1 RC filtering circuit of series connection, and RC filtering circuit utilizes capacitor charge and discharge principle to carry out filtering to signal, and the disconnected signal after treatment after filtering of diode resistance flows into equipment under test self-test signal input interface.
Preferably, described relay drive plate comprises:
Input interface module: be connected with signal driver card interface, receive the output switch amount signal condition of signal driver card;
Relay module: realize the transmission of switching value signal condition between signal driver and equipment under test, and realize the electrical isolation between the two;
Driving switch amount signal designation module: the switching value signal that adopts light emitting diode subtend equipment under test to send is indicated;
Output interface module: be connected with equipment under test switch value input interface, output switch amount signal is to equipment under test.
Preferably, between described control terminal and data acquisition card and signal driver card, undertaken alternately by pci bus.
Preferably, in described relay collection plate and described relay drive plate, the quantity Yi32 road of switching value signal is that a unit manages.
(3) beneficial effect
In the solution of the present invention, adopt relay dry contact mode to guarantee that switching value signal polarity and/or power between equipment under test and testing apparatus are not limited by the other side; Adopt relay I/O mode to realize the electrical isolation between equipment under test and testing apparatus; In addition, the use by filtering circuit had not only realized the signals collecting of Microsecond grade but also be not subject to the impact of Microsecond grade pulse interference signal; Finally, collection of the present invention and driving switch amount number of signals can free adjustment configure, and can simulate railway system's gravity-type adaptive polarizing memory voltage time constant, and volume is little, realization is flexible.
Accompanying drawing explanation
Fig. 1 is the direct electrical connection schematic diagram of testing apparatus and equipment under test in prior art;
Fig. 2 is the structural representation of the proving installation of signals collecting and driving in embodiments of the invention;
Fig. 3 is the electrical isolation principle schematic of embodiments of the invention repeat circuit I/O mode;
Fig. 4 is the electrical block diagram of embodiments of the invention repeat circuit collection plate;
Fig. 5 is the electrical block diagram of embodiments of the invention repeat circuit drive plate;
Fig. 6 is the electrical block diagram of the filtration module of embodiments of the invention repeat circuit collection plate.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belongs to the scope of protection of the invention.
In the present invention relay dry contact mode and capture card mode are improved, the input and output of relay are separately carried out, in addition, adopt relay collection plate and drive plate gather and drive in switch acquisition driving place, adopt data acquisition card and driver card to carry out signal controlling and test at system control end, realize thus the isolation of signal, improved acquisition precision and speed, and can be applied to neatly the collection of large-scale switches amount and drive in test.Referring to Fig. 2, proving installation of the present invention is divided into controls side and interface side two parts, comprises control terminal, data acquisition card, signal driver card, relay collection plate, relay drive plate, guide tracked AC-DC power supply:
Control terminal, by the test control program moving on its platform, is realized flexible configuration and control to equipment under test input/output switching amount signal;
Data acquisition card mainly gathers the switching value signal condition from the output of relay collection plate, by pci bus, the switching value signal condition collecting is first transferred to control terminal, and after control terminal meets with a response, switch amount status information is tested control;
The principle of work and power of signal driver card is just contrary with data acquisition card, control terminal sends the order of switching value signal output state according to test demand for control, by pci bus, switching value signal output state is transferred to signal driver card, signal driver card transfers to relay drive plate by switching value signal output state again;
Relay collection plate gathers the switching value signal condition from equipment under test output, and the switching value signal condition collecting is transferred to data acquisition card;
Relay drive plate receives the switching value signal output state from signal driver card, and output switch amount signal is to equipment under test;
Guide rail power supply is realized the power supply to relay collection plate, relay drive plate, data acquisition card, signal driver card.
In proving installation of the present invention, owing to having adopted the mode of relay input and output, realize the electrical isolation between equipment under test and testing apparatus, make can not damage testing apparatus because of equipment under test generation electric fault between equipment, also can not damage equipment under test because of testing apparatus generation electric fault, the electrical isolation principle of relay I/O mode as shown in Figure 3.In Fig. 3, equipment under test switching value signal is connected with relay (being integrated in relay drive plate and relay collection plate) respectively with testing apparatus semaphore, belong to the first source voltage VCC1 of equipment under test switching value signal and one end of the first ground voltage GND1 cut-in relay, belong to the second source voltage VCC2 of testing apparatus switching value signal and be connected to the other end of load LOAD cut-in relay of the second ground voltage GND2, demand closure or disconnection that switch in relay is controlled according to test realize different connections, thereby input the test control of (switching value signal driver) and output (switching value signals collecting).
Particularly, as shown in Figure 4, relay collection plate mainly comprises following five modules to the relay collection plate principle in the present invention:
1) input interface module: be connected with equipment under test switching value output interface, gather equipment under test output switch amount signal condition;
2) filtration module: connect described input interface module and relay module, the switching value signal collecting is carried out to filtering processing, self check pulse amplitude from equipment under test is buffered to testing apparatus and can identifies below level signal, to reach the object of shielding undesired signal;
3) relay module: realize the transmission of switching value signal condition between data acquisition card and equipment under test, and realize the electrical isolation between the two; Wherein, the switching value signal collecting is received respectively by the 1st and the 16th pin of relay module through filtration module positive and negative polarity signal after treatment; In addition the 11st and the 6th pin N.C mouth (Normal Close, the normally closed) virtual connection of relay module;
4) gather switching value signal designation module: the 13rd pin com port (Common that is included in relay module, be common port) and source voltage VCC between the light emitting diode of connecting and current-limiting resistance (in this side, the 9th pin N.O mouth (Normal Open, often open) ground voltage GND), the switching value signal that adopts light emitting diode to collect data acquisition card is indicated;
5) output interface module: the 4th pin com port by relay module is connected with signals collecting card interface with the 8th pin N.O mouth, and the switching value signal condition collecting is transferred to data acquisition card.
And relay drive plate principle is as shown in Figure 5, relay drive plate mainly comprises four modules:
1) input interface module: be connected with signal driver card interface, receive the output switch amount signal condition of signal driver card;
2) relay module: realize the transmission of switching value signal condition between signal driver and equipment under test, and realize the electrical isolation between the two; Wherein, the positive and negative polarity signal of the output switch amount signal condition of signal driver card is received respectively by the 1st and the 16th pin of relay module; In addition the 11st of relay module the and the 6th pin N.C mouth virtual connection;
3) driving switch amount signal designation module: be included in the light emitting diode of connecting between the 13rd pin com port of relay module and source voltage VCC and current-limiting resistance (in this side, the 9th pin N.O mouth ground voltage GND), the switching value signal that adopts light emitting diode subtend equipment under test to send is indicated;
4) output interface module: the 4th pin com port by relay module is connected with equipment under test switch value input interface with the 8th pin N.O mouth, and output switch amount signal is to equipment under test.
In above-mentioned relay collection plate and relay drive plate, in order more effectively to process for multi-way switching values signal, preferably, the quantity Yi32 road of collection and driving switch amount signal is that a unit manages, and Ji Mei 32 tunnels collection switching value signals are realized on a relay collection plate, Mei32 road driving switch amount signal is realized on a relay drive plate; Can free adjustment the quantity of configuration collection plate and/or drive plate realize the more test control of multiple signals.More preferably, in the present invention, carry out the test control of 128 collection He128 road, tunnels driving switch amount signals.
Further, the circuit theory of the filtration module using in relay collection plate is as shown in Figure 6: after equipment under test self-test signal input interface is in parallel with equipment under test output signal interface, access filtration module, process after being received by relay module and export to data acquisition card by signals collecting card interface through filtration module; Wherein, filtration module comprises 1 diode (1N4007) and 1 RC filtering circuit of series connection, RC filtering circuit utilizes capacitor charge and discharge principle to carry out filtering to signal, diode act as blocking-up after filtering signal after treatment flow into equipment under test self-test signal input interface.
By above-mentioned embodiment, the present invention can reach following technique effect:
1, proving installation of the present invention has adopted the mode of relay dry contact, and the switching value signal polarity of testing apparatus and/or power are not limited by the switching value signal polarity of equipment under test can; The switching value signal polarity of equipment under test and/or power can tested equipment yet switching value signal polarity limit;
2, proving installation collection of the present invention and driving switch amount number of signals Yi32 road are a unit, can free adjustment configure quantity;
3, proving installation of the present invention has adopted the mode of relay input and output, has realized the electrical isolation between equipment under test and testing apparatus, can not produce to influence each other to cause other equipment impaired while making, between equipment, electric fault occurs;
4, proving installation of the present invention can be simulated railway system's gravity-type adaptive polarizing memory voltage time constant, and the heavy relay of the railway system has the advantage that volume is little relatively;
5, proving installation of the present invention is designed with unique filtering circuit, can carry out filtering processing to the Microsecond grade pulse interference signal that enters testing apparatus, pulse amplitude is buffered to testing apparatus and can identifies below level signal, to reach the object of shielding undesired signal; Meanwhile, do not affect again the collection of equipment under test self to Microsecond grade pulse signal.
Above embodiment is only for illustrating the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (4)
1. a proving installation for signals collecting and driving, is characterized in that, described device comprises: control terminal, data acquisition card, signal driver card, relay collection plate, relay drive plate and guide tracked AC-DC power supply; Wherein,
Control terminal is configured and controls equipment under test input/output switching amount signal;
Data acquisition card gathers the switching value signal condition from the output of relay collection plate, and the switching value signal condition collecting is transferred to control terminal, and control terminal is tested control by switch amount status information;
The switching value signal output state order that control terminal sends according to test demand for control is received in signal driver clamping, then switching value signal output state is transferred to relay drive plate;
Relay collection plate gathers the switching value signal condition from equipment under test output, and the switching value signal condition collecting is transferred to data acquisition card;
Relay drive plate receives the switching value signal output state from signal driver card, and output switch amount signal is to equipment under test;
Guide rail power supply is realized the power supply to relay collection plate, relay drive plate, data acquisition card, signal driver card;
Described relay collection plate comprises:
Input interface module: be connected with equipment under test switching value output interface, gather equipment under test output switch amount signal condition;
Filtration module: connect described input interface module and relay module, the switching value signal collecting is carried out to filtering processing;
Relay module: realize the transmission of switching value signal condition between data acquisition card and equipment under test, and realize the electrical isolation between the two;
Gather switching value signal designation module: the switching value signal that adopts light emitting diode to collect data acquisition card is indicated;
Output interface module: be connected with signals collecting card interface, the switching value signal condition collecting is transferred to data acquisition card;
Described relay drive plate comprises:
Input interface module: be connected with signal driver card interface, receive the output switch amount signal condition of signal driver card;
Relay module: realize the transmission of switching value signal condition between signal driver and equipment under test, and realize the electrical isolation between the two;
Driving switch amount signal designation module: the switching value signal that adopts light emitting diode subtend equipment under test to send is indicated;
Output interface module: be connected with equipment under test switch value input interface, output switch amount signal is to equipment under test.
2. device according to claim 1, it is characterized in that, described filtration module comprises 1 diode and 1 RC filtering circuit of series connection, RC filtering circuit utilizes capacitor charge and discharge principle to carry out filtering to signal, and the disconnected signal after treatment after filtering of diode resistance flows into equipment under test self-test signal input interface.
3. device according to claim 1, is characterized in that, between described control terminal and data acquisition card and signal driver card, is undertaken alternately by pci bus.
4. device according to claim 1, is characterized in that, in described relay collection plate and described relay drive plate, the quantity Yi32 road of switching value signal is that a unit manages.
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| CN102809680B (en) * | 2012-08-27 | 2015-01-21 | 北京四方继保自动化股份有限公司 | Anti-interference switching value transmission circuit |
| CN103019105B (en) * | 2012-12-27 | 2015-06-17 | 北京交控科技有限公司 | Wayside equipment simulation device |
| CN107300669B (en) * | 2017-06-06 | 2020-03-24 | 南方电网科学研究院有限责任公司 | Programmable switch knife switch simulation device and realization method thereof |
| CN116540084B (en) * | 2023-05-10 | 2023-12-12 | 江苏斯菲尔电气股份有限公司 | Automatic test system and method for relay function of electric power instrument |
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