CN203813779U - Bus signal simulation and remote-verification device - Google Patents
Bus signal simulation and remote-verification device Download PDFInfo
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- CN203813779U CN203813779U CN201420162873.8U CN201420162873U CN203813779U CN 203813779 U CN203813779 U CN 203813779U CN 201420162873 U CN201420162873 U CN 201420162873U CN 203813779 U CN203813779 U CN 203813779U
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Abstract
The utility model specifically relates to a bus signal simulation and remote-verification device. The device comprises an RS485 interface I, an RS485 interface II, an RS485 interface III, an RS232 interface I, an RS232 interface II, an RS485 bus driver I, an RS485 bus driver II, an RS485 bus driver III, an RS232 bus driver, a micro processor, and a relay. According to the utility model, the micro processor is used to control the on-off states of the double-pole double-throw relay; data delivered by an on-site instrument and a measurement and control system and received through the RS485 interface I is divided into two identical paths and transmitted; one path of data is transmitted to a center host through a specific network requiring verification from the RS485 interface II while the other path of data is transmitted to the center host through a public network, such as GSM or GPRS, from the RS485 interface III; and the center host can compare the two paths of data and determine whether the two paths of data are identical or not, thereby determining whether the specific line can correctly transmit the data or not. Accordingly, the working efficiency is increased and the verification accuracy is guaranteed.
Description
Technical field
the utility model relates to a kind of calibration equipment, is specifically related to a kind of bus signals simulation and long-range calibration equipment.
Background technology
at present, TT&C system or on-the-spot long distance control system build with debug process in, the common decentre main control system of remote scene data acquisition and measure and control device has more remote, as distributed solar energy photovoltaic plant, each point of power station apart from main control room have several kilometers even farther.In centralized monitoring system, conventionally need to lay special circuit and send data to host computer, or the observing and controlling order that host computer sends is transferred in field control system by special circuit.But during system is laid and is debugged in the early stage, compared with common channel, the special circuit laying often invalidated can not ensure that it can correctly transmit data, the electrical signal data of sending from transducer cannot be known again its exact numerical values recited, the data that can not ensure to transfer to through special circuit host computer are exactly the data that transducer or instrument are sent, and also cannot ensure that the control signal that host computer is sent can correctly be received by transducer after special circuit transmission simultaneously.For the problems referred to above, whether traditional solution often needs special messenger to go to transducer position to coordinate the technical staff of upper computer end to detect this special circuit to go wrong, and transducer settlement and upper computer end are distant, the technical staff at two ends can only adopt the modes such as phone to exchange and search problem, this method of calibration is a kind of manual method, efficiency is lower, consume a large amount of financial resources manpowers, need know-how personnel transmission to system in finite time to verify, workload is large, efficiency is low, cannot carry out the verification of mass data, occurrent error in data is also difficult for finding.
Summary of the invention
The utility model provides a kind of bus signals simulation and long-range calibration equipment, by the break-make of microprocessor control dpdt relay, the field instrument receiving by RS485 interface I and TT&C system can be sent to data and be divided into identical two-way transmission, wherein a road is transferred to central host from RS485 interface II by the dedicated network that needs verification, another road is transferred to central host from RS485 interface III by common network as GSM or GPRS, software in central host can compare and judge that whether two groups of data are consistent two groups of data, judge whether special circuit can correctly transmit data, improve operating efficiency, ensure the accuracy of verification, the utility model can disconnection and the transfer of data of field instrument and TT&C system, connect field adjustable PC by RS232 interface I or RS232R interface II, send out one group of data to microprocessor by PC, microprocessor receives data and by special circuit and common signal channel, data is delivered to central master station, detect special circuit reliability, by the simulation of signal, can simulated field instrument and the TT&C system signal that sends or receive under various physical conditions, the particularly data under some extreme conditions, rely on comparatively difficulty of the true signal occurring of actual instrument or transducer, thereby more comprehensively and efficiently debug system.
Technical solutions of the utility model are as follows:
A kind of bus signals simulation and long-range calibration equipment, it is characterized in that, comprise RS485 interface I, RS485 interface II, RS485 interface III, RS232 interface I, RS232 interface II, RS485 bus driver I, RS485 bus driver II, RS485 bus driver III, RS232 bus driver, microprocessor and relay; Described RS232 interface I is connected with microprocessor by RS232 bus driver with RS232 interface II; Described RS485 interface I is connected with microprocessor with RS485 bus driver III by RS485 bus driver I respectively with RS485 interface III; Described RS485 interface I is all connected with relay with RS485 interface II; Described relay, RS485 bus driver II are connected successively with microprocessor; Described relay is connected with microprocessor by drive circuit.
Described relay is dpdt relay, and RS485 interface I is connected with RS485 interface II by the normally-closed contact of dpdt relay, and RS485 interface II is connected with RS485 bus driver II by the normally opened contact of dpdt relay.
the beneficial effects of the utility model:
1. RS485 interface I of the present utility model is connected with outside measure and control device; RS485 interface II is connected with special circuit; RS485 interface III is connected with external wireless module; RS232 interface I is used for being connected field adjustable PC with RS232 interface II;
2. the utility model is by the break-make of microprocessor control dpdt relay, the field instrument receiving by RS485 interface I and TT&C system can be sent to data and be divided into identical two-way transmission, wherein a road is transferred to central host from RS485 interface II by the dedicated network that needs verification, another road is transferred to central host from RS485 interface III by common network as GSM or GPRS, central host can compare and judge that whether two groups of data are consistent two groups of data, judge whether special circuit can correctly transmit data, improve operating efficiency, ensure the accuracy of verification,
3. the utility model can disconnection and the transfer of data of field instrument and TT&C system, connect field adjustable PC by RS232 interface I or interface 2, send out one group of data to microprocessor by PC, microprocessor receives data and by special circuit and common signal channel, data is delivered to central master station, detect special circuit reliability, by the simulation of signal, can simulated field instrument and the TT&C system signal that sends or receive under various physical conditions, the particularly data under some extreme conditions, rely on comparatively difficulty of the true signal occurring of actual instrument or transducer, thereby more comprehensively and efficiently debug system.
Brief description of the drawings
Fig. 1 is theory diagram of the present utility model.
Fig. 2 is dpdt relay structure chart in the utility model.
Fig. 3 is the schematic diagram of the utility model verification short distance TT&C system special circuit.
Fig. 4 is the schematic diagram of the remote TT&C system special circuit of the utility model verification.
Embodiment
as shown in Figure 1, the simulation of the utility model bus signals and long-range calibration equipment, comprise RS485 interface I, RS485 interface II, RS485 interface III, RS232 interface I, RS232 interface II, RS485 bus driver I, RS485 bus driver II, RS485 bus driver III, RS232 bus driver, microprocessor and relay; Described RS232 interface I is connected with microprocessor by RS232 bus driver with RS232 interface II; Described RS485 interface I is connected with microprocessor with RS485 bus driver III by RS485 bus driver I respectively with RS485 interface III; Described RS485 interface I is all connected with relay with RS485 interface II; Described relay, RS485 bus driver II are connected successively with microprocessor; Described relay is connected with microprocessor by drive circuit.
Relay is dpdt relay, and RS485 interface I is connected with RS485 interface II by the normally-closed contact of dpdt relay, and RS485 interface II is connected with RS485 bus driver II by the normally opened contact of dpdt relay.
RS485 interface I of the present utility model is connected with outside measure and control device; RS485 interface II is connected with special circuit; RS485 interface III is connected with external wireless module; RS232 interface I is used for being connected field adjustable PC with RS232 interface II;
As shown in Figure 2, No. 1 pin two lines of RS485 interface I and dpdt relay are connected, No. 2 pins of relay are connected with RS485 interface II two lines, and No. 3 pins of relay are connected with microprocessor by RS485 bus driver II, and pin is directly connected with microprocessor with No. 5 for No. 4.In the time of coil no power between No. 4, microprocessor control and No. 5 pins, relay is in normally off, No. 3 pin is connected conducting with No. 1 pin, now directly conducting between RS485 interface I and RS485 interface II, flows into signal by RS485 interface I and directly delivers to central host by designated lane.In the time of coil electricity between No. 4, microprocessor control and No. 5 pins, relay is in normally open, now No. 3 pins are connected conducting with No. 2 pins, No. 3 pin is connected disconnection with No. 1 pin, microprocessor receives the signal from RS485 interface I by RS485 bus driver I, signal is leaded up to RS485 bus driver II and deliver to No. 3 circuits the RS485 interface II being connected with special circuit No. 2 by dpdt relay conducting, the RS485 interface III of separately leading up to is delivered to central host by wireless module by highway, judge by central host whether special circuit can correctly transmit data.
As shown in Figure 3, when field instrument and TT&C system decentre main frame are when very near, bus signals switching, generation and calibration equipment are between field instrument and TT&C system and central host, by this device, the data of field instrument and measure and control device are sent to host computer by RS485 special circuit and common channel, judge that whether this special circuit is normal.Meanwhile, when field instrument and measure and control device produce the condition harshness of data, can not produce in real time data and carry out verification time, the generation analog signal that can be connected with device by RS232 serial ports by on-the-spot PC is carried out the reliability of detection line.
As shown in Figure 4, when field instrument and TT&C system decentre main frame are when far, conventionally adopt optical fiber to carry out transfer of data as special circuit, and the data transaction that adopts in the line communication adapter that field instrument and TT&C system are sent is sent into fibre circuit.Now, bus signals switching, generation and calibration equipment are between field instrument and TT&C system and signal adapter, by this device, the data of field instrument and measure and control device are delivered to signal adapter by RS485 interface II and be sent to host computer by special circuit, also deliver to host computer by RS485 interface I by common channel, judge that whether this special circuit is normal simultaneously.
The utility model is by the break-make of microprocessor control dpdt relay, the field instrument receiving by RS485 interface I and TT&C system can be sent to data and be divided into identical two-way transmission, wherein a road is transferred to central host from RS485 interface II by the dedicated network that needs verification, another road is transferred to central host from RS485 interface III by common network as GSM or GPRS, software in central host can compare and judge that whether two groups of data are consistent two groups of data, judge whether special circuit can correctly transmit data, improve operating efficiency, ensure the accuracy of verification, the utility model can disconnection and the transfer of data of field instrument and TT&C system, connect field adjustable PC by RS232 interface I or RS232R interface II, send out one group of data to microprocessor by PC, microprocessor receives data and by special circuit and common signal channel, data is delivered to central master station, detect special circuit reliability, by the simulation of signal, can simulated field instrument and the TT&C system signal that sends or receive under various physical conditions, the particularly data under some extreme conditions, rely on comparatively difficulty of the true signal occurring of actual instrument or transducer, thereby more comprehensively and efficiently debug system.
Claims (2)
1. bus signals simulation and a long-range calibration equipment, is characterized in that: comprise RS485 interface I, RS485 interface II, RS485 interface III, RS232 interface I, RS232 interface II, RS485 bus driver I, RS485 bus driver II, RS485 bus driver III, RS232 bus driver, microprocessor and relay; Described RS232 interface I is connected with microprocessor by RS232 bus driver with RS232 interface II; Described RS485 interface I is connected with microprocessor with RS485 bus driver III by RS485 bus driver I respectively with RS485 interface III; Described RS485 interface I is all connected with relay with RS485 interface II; Described relay, RS485 bus driver II are connected successively with microprocessor; Described relay is connected with microprocessor by drive circuit.
2. bus signals simulation according to claim 1 and long-range calibration equipment, it is characterized in that: described relay is dpdt relay, RS485 interface I is connected with RS485 interface II by the normally-closed contact of dpdt relay, and RS485 interface II is connected with RS485 bus driver II by the normally opened contact of dpdt relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420162873.8U CN203813779U (en) | 2014-04-04 | 2014-04-04 | Bus signal simulation and remote-verification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420162873.8U CN203813779U (en) | 2014-04-04 | 2014-04-04 | Bus signal simulation and remote-verification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203813779U true CN203813779U (en) | 2014-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420162873.8U Expired - Fee Related CN203813779U (en) | 2014-04-04 | 2014-04-04 | Bus signal simulation and remote-verification device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203813779U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113219941A (en) * | 2021-04-22 | 2021-08-06 | 湖南联塑科技实业有限公司 | Signal linking and confirming method between industrial equipment |
-
2014
- 2014-04-04 CN CN201420162873.8U patent/CN203813779U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113219941A (en) * | 2021-04-22 | 2021-08-06 | 湖南联塑科技实业有限公司 | Signal linking and confirming method between industrial equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20160404 |