CN212935922U - Remote centralized alarm system - Google Patents
Remote centralized alarm system Download PDFInfo
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- CN212935922U CN212935922U CN202022198545.1U CN202022198545U CN212935922U CN 212935922 U CN212935922 U CN 212935922U CN 202022198545 U CN202022198545 U CN 202022198545U CN 212935922 U CN212935922 U CN 212935922U
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Abstract
The utility model discloses a long-range centralized alarm system, it is including a plurality of slave stations that are used for gathering alarm signal, the main website that is used for real-time supervision slave station alarm information and output alarm information, the output of slave station with the input of main website passes through communication module communication connection, the last communication conversion module that is used for realizing the extension of communication distance that is provided with of communication module, the output and the alarm terminal of main website are connected. The communication module is a 485 serial communication module, and the communication conversion module is a CAN communication module. The utility model provides a long-range centralized alarm system passes through data conversion with traditional PLC-485 bus communication to CAN bus agreement, through CAN bus with the stable transmission of data to super far-end PLC controller, realizes whole factory PLC networking centralized alarm system, the utility model provides a 485 communication distance short puzzlement, realized the data transmission of super far-end between the PLC controller.
Description
Technical Field
The utility model belongs to the technical field of central alarm, specifically speaking relates to a long-range central alarm system.
Background
In the centralized alarm technology, the PLC is an indispensable main role, has the characteristics of high response speed and strong working stability, and realizes data summarization, control operation and various data output of each device on site. Especially, a plurality of distributed devices networked by the PLC are respectively and independently controlled and closely associated with each other.
The communication protocol is as follows: also called communication protocol, refers to a kind of agreement for data transmission control between two communication parties. The agreement includes making unified regulations on data format, synchronization mode, transmission speed, transmission step, error detection and correction mode, control character definition, etc. both parties must comply together, which is also called link control procedure.
Currently known industrial communication protocols are: modbus protocol, TCP _ IP protocol, Profibus _ DP protocol, HART communication protocol, etc. The transmission rate of the protocols is stable, but the data transmission distance is a short board in the field of industrial equipment.
In the prior art, the effective communication distance of 485 communication is only 100 meters short if no signal repeater is added.
Accordingly, further improvements and improvements are needed in the art.
SUMMERY OF THE UTILITY MODEL
In order to overcome the short problem of data transmission distance, the utility model provides a 485 serial communication module changes CAN communication module's long-range integrated alarm system CAN effectively prolong communication distance to 3 KM.
The utility model provides a long-range centralized alarm system, wherein, including a plurality of slave stations that are used for gathering alarm signal, be used for real-time supervision slave station alarm information and output alarm information's main website, the output of slave station with the input of main website passes through communication module communication connection, be provided with the communication conversion module that is used for realizing the extension of communication distance on the communication module, the output and the alarm terminal of main website are connected.
Further, communication module is 485 serial communication module, communication conversion module is CAN communication module 400, the output of slave station passes through 485 serial communication module and sends data to CAN communication module, and CAN communication module receives the input of data through 485 bus transmission to the main website again after the data, CAN communication module sets up two, connects through long distance communication cable between two CAN communication module, all connect through 485 communication cable between the output of slave station and the 485 serial communication module, between 485 serial communication module and the CAN communication module, between CAN communication module and the input of main website.
Furthermore, the two end circuits of the CAN communication module are respectively provided with a communication lightning protection module.
Preferably, the 485 serial communication module is converted into the CAN communication module to be in short circuit with the terminal resistor, and the tail end of the slave station device is in short circuit with the terminal resistor.
Further, the slave station comprises a slave station PLC controller 300 for compiling a slave station communication program and a data input program, and the communication port of the slave station PLC controller 300 is a 485 communication port.
Further, the slave station further comprises an alarm triggering device arranged in the feeding area, the alarm triggering device 100 is in communication connection with the slave station, a first intermediate relay for converting an alarm signal is arranged between the alarm signal input end and the slave station, and the first intermediate relay is connected with the slave station PLC.
Further, the master station comprises a master station PLC controller in communication connection with the slave station PLC controller 300, the master station PLC controller polls the slave stations to obtain the slave station alarm data, and the alarm data received by each slave station is mapped to the corresponding output point of the master station PLC controller.
Furthermore, a second intermediate relay for converting the alarm signal is correspondingly arranged between each output point position of the master station PLC controller and the alarm terminal, each second intermediate relay is respectively connected with the output point position of the corresponding master station PLC controller, the second intermediate relay is attracted by a coil after receiving the alarm information of the corresponding output point position of the master station PLC controller, and the alarm terminal connected with the second intermediate relay outputs the alarm signal.
Further, the alarm terminal comprises an audible and visual alarm and a communication module used for being connected with the mobile equipment.
Further, communication module is including being used for transmitting alarm information to the thing networking's thing networking communication module, thing networking communication module is connected with the output of main website PLC controller.
Preferably, the mobile device is a mobile phone, a tablet and other wearable devices.
Advantageous effects
The utility model provides a long-range centralized alarm system passes through data conversion with traditional PLC-485 bus communication to CAN bus agreement, through CAN bus with the stable transmission of data to super far-end PLC controller. The centralized alarm system realizes PLC networking in the whole plant area, solves the problem of short 485 communication distance, and realizes data transmission at ultra-long distance between PLC controllers.
Drawings
Fig. 1 is a schematic view of a part of a remote centralized alarm system in embodiment 1 of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following description, together with the drawings of the present invention, clearly and completely describes the technical solution of the present invention, and based on the embodiments in the present application, other similar embodiments obtained by those skilled in the art without creative efforts shall all belong to the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustration and not for limitation of the present invention.
Detailed description of the preferred embodiment 1
The utility model provides a long-range centralized alarm system, as shown in figure 1, it includes a plurality of slave stations that are used for gathering alarm signal, is used for real-time supervision slave station alarm information and exports the main website of alarm information, the output of slave station with the input of main website passes through communication module communication connection, be provided with the communication conversion module that is used for realizing the extension of communication distance on the communication module, the output and the alarm terminal of main website are connected.
Further, the communication module is a 485 serial communication module, the communication conversion module is a CAN communication module 400, the output end of the slave station sends data to the CAN communication module 400 through the 485 serial communication module, the CAN communication module 400 receives the data and then transmits the data to the input end of the master station through a 485 bus, the two CAN communication modules 400 are arranged, the two CAN communication modules 400 are connected through a long-distance communication cable, the output end of the slave station is connected with the 485 serial communication module, the 485 serial communication module is connected with the CAN communication module 400, and the input end of the CAN communication module 400 is connected through the 485 communication cable.
Specifically, the master station PLC controller 500 communication port is set to 485 communication mode, and the A, B pin of the 485 port 9-frame connector and the A, B pin of the 485-to-CAN module are connected by 485 communication cables, and the two CAN communication modules 400H and L are connected by long-distance communication cables point to point.
Specifically, the 485 serial communication module converts the 485_ modbusRTU serial communication information frame into a CAN bus protocol frame, and the transmission mode is a bidirectional transparent conversion mode. And all data of the serial frame are sequentially filled into a data field of the CAN message frame. The converter receives and converts data as soon as it detects that there is data on the serial bus. Similarly, as for the message of the CAN bus, a frame is immediately forwarded after receiving the frame, and the data in the CAN message data field is sequentially and completely converted into the serial frame during conversion.
Further, be provided with communication lightning protection module on the both ends circuit of CAN communication module 400 respectively, effectively avoid the low latitude thunderstorm to puncture 485 communication module and slave station PLC controller 300.
Preferably, the 485 serial communication module is converted into the CAN communication module 400 to be in short circuit with the terminal resistor, and the tail end slave station device is in short circuit with the terminal resistor to absorb reflected waves on a network, so that the signal strength is effectively enhanced.
Preferably, the 485-CAN communication module 400 has a terminal resistance of 120 ohms
Further, the slave station comprises a slave station PLC controller 300 for compiling a slave station communication program and a data input program, and the communication port of the slave station PLC controller 300 is a 485 communication port.
Further, the feeding system further comprises an alarm triggering device 100 arranged in the feeding area, the alarm triggering device 100 is in communication connection with the slave station, a first intermediate relay 200 for converting an alarm signal is arranged between the alarm signal input end and the slave station, and the first intermediate relay 200 is connected with the slave station PLC 300 through a control circuit.
Specifically, the first intermediate relay 200 is connected to the slave PLC controller 300 through a control line.
Specifically, the alarm triggering device 100 receives the alarm signal, converts the 220V alarm signal into a 24V weak point signal through the first intermediate relay 200, transmits the 24V weak point signal to the slave station PLC controller 300, and compiles a Modbus _ RTU slave station communication program and a data image input program in the slave station PLC controller 300.
Further, the master station comprises a master station PLC controller 500 in communication connection with the slave station PLC controller 300, the master station PLC controller 500 polls the slave stations to obtain the slave station alarm data, and the alarm data received by each slave station is mapped to the corresponding output point of the master station PLC controller 500.
Specifically, master station PLC controller 500 compiles Modbus _ RTU master station program, and the master station feeds back the alarm data frame of each slave station to the master station through the mode of polling the slave stations, and the master station will map to master station PLC controller 500 output point location.
Further, a second intermediate relay 600 for converting the alarm signal is correspondingly arranged between each output point of the master station PLC controller 500 and the alarm terminal, each second intermediate relay 600 is respectively connected with the output point of the corresponding master station PLC controller 500, the second intermediate relay 600 receives the alarm information of the output point corresponding to the master station PLC controller 500 and then the coil is attracted, and the alarm terminal connected with the second intermediate relay 600 through a control circuit outputs the alarm signal.
Further, the alarm terminal comprises an audible and visual alarm 700 and a communication module for connecting the mobile device.
Further, communication module is including being used for transmitting alarm information to the thing networking's thing networking communication module, thing networking communication module and master station PLC controller 500's output communication connection.
Specifically, the alarm information is transmitted to an IOT (Internet of things) through a 485 interface Modbus-RTU (remote terminal unit) protocol of the IOT, the alarm state of the whole feeding area can be remotely checked through an IOT website, a specified mobile phone number can be bound when an alarm occurs, and the alarm information is sent to a mobile phone in a mode of WeChat or short message.
The utility model provides a when long-range centralized alarm system specifically uses, main website PLC controller 500 compiles Modbus _ RTU main website program, and the main website passes through the mode of polling slave station, feeds back the alarm data frame of every slave station to the main website, and the main website will image to main website PLC controller 500 output point, and the coil that corresponds second auxiliary relay 600 will the actuation, and audible-visual annunciator 700 that corresponds sends alarm signal.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, i.e. the present invention is intended to cover all equivalent variations and modifications within the scope of the present invention.
Claims (10)
1. The utility model provides a long-range centralized alarm system, its characterized in that, including a plurality of slave stations that are used for gathering alarm signal, be used for real-time supervision slave station alarm information and output alarm information's main website, the output of slave station with the input of main website passes through communication module communication connection, be provided with the communication conversion module that is used for realizing the extension of communication distance on the communication module, the output and the alarm terminal of main website are connected.
2. The remote centralized alarm system of claim 1, wherein the communication module is a 485 serial communication module, the communication conversion module is a CAN communication module, the output end of the slave station sends data to the CAN communication module through the 485 serial communication module, the CAN communication module receives the data and then transmits the data to the input end of the master station through a 485 bus, the two CAN communication modules are connected through a long-distance communication cable, and the output end of the slave station is connected with the 485 serial communication module, the 485 serial communication module is connected with the CAN communication module, and the CAN communication module is connected with the input end of the master station through the 485 communication cable.
3. The remote centralized alarm system of claim 2, wherein the two end circuits of the CAN communication module are respectively provided with a communication lightning protection module.
4. The remote centralized alarm system of claim 2, wherein the 485 serial communication module to CAN communication module short-circuits the termination resistor, and the end slave device short-circuits the termination resistor.
5. The remote centralized alarm system of claim 2, wherein the slave station comprises a slave station PLC controller for programming a slave station communication program and a data input program, and the communication port of the slave station PLC controller is 485 communication port.
6. The remote centralized alarm system of claim 5, wherein the slave station further comprises an alarm triggering device arranged in the feeding area, the alarm triggering device is in communication connection with the slave station, a first intermediate relay for converting the alarm signal is arranged between the alarm signal input end and the slave station, and the first intermediate relay is connected with the slave station PLC controller.
7. The remote centralized alarm system of claim 5, wherein the master station comprises a master station PLC controller communicatively connected to slave station PLC controllers, the master station PLC controller polling the slave stations for slave station alarm data, and mapping the alarm data received by each slave station to a corresponding output point of the master station PLC controller.
8. The remote centralized alarm system of claim 7, wherein a second intermediate relay for converting the alarm signal is correspondingly disposed between each output point of the master station PLC controller and the alarm terminal, each second intermediate relay is respectively connected to the output point of the corresponding master station PLC controller, the second intermediate relay receives the alarm information of the corresponding output point of the master station PLC controller and then the coil is attracted, and the alarm terminal connected to the second intermediate relay outputs the alarm signal.
9. The remote centralized alarm system of claim 8, wherein the alarm terminal comprises an audible and visual alarm, a communication module for connecting to a mobile device.
10. The remote centralized alarm system of claim 9, wherein the communication module comprises an internet of things communication module for transmitting the alarm information to the internet of things, and the internet of things communication module is in communication connection with the output end of the master station PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022198545.1U CN212935922U (en) | 2020-09-29 | 2020-09-29 | Remote centralized alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022198545.1U CN212935922U (en) | 2020-09-29 | 2020-09-29 | Remote centralized alarm system |
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| CN212935922U true CN212935922U (en) | 2021-04-09 |
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| CN202022198545.1U Active CN212935922U (en) | 2020-09-29 | 2020-09-29 | Remote centralized alarm system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090516A (en) * | 2021-04-19 | 2021-07-09 | 上海煜铠智能科技有限公司 | High pressure grouting pump thing networking remote monitoring device |
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- 2020-09-29 CN CN202022198545.1U patent/CN212935922U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090516A (en) * | 2021-04-19 | 2021-07-09 | 上海煜铠智能科技有限公司 | High pressure grouting pump thing networking remote monitoring device |
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