CN215769450U - Remote radio centralized alarm system - Google Patents
Remote radio centralized alarm system Download PDFInfo
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- CN215769450U CN215769450U CN202121216434.7U CN202121216434U CN215769450U CN 215769450 U CN215769450 U CN 215769450U CN 202121216434 U CN202121216434 U CN 202121216434U CN 215769450 U CN215769450 U CN 215769450U
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Abstract
The utility model discloses a remote radio centralized alarm system which comprises a plurality of slave stations for acquiring alarm information and a master station for monitoring the alarm information of the slave stations in real time and outputting the alarm information, wherein the output ends of the slave stations are in communication connection with the input end of the master station through a communication module, the communication module is provided with a wireless communication module for prolonging the communication distance, and the output end of the master station is connected with an alarm terminal. The communication module is a 485 serial communication module, and the wireless communication module adopts a wireless data transmission radio station. The utility model solves the problems that the CAN bus is difficult to construct in complex environment, high in construction cost, long in installation time, difficult to maintain, not suitable for increasing equipment and the like in the mode of converting an original 485 serial communication module into a remote centralized alarm system of the CAN communication module, and realizes more optimized data transmission of the super-long distance between PLC controllers.
Description
Technical Field
The utility model belongs to the technical field of centralized alarm, and particularly relates to a remote radio centralized alarm system.
Background
In the centralized alarm technology, PLC _ S7-200smart (programmable controller) 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 various field devices. 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 convention includes making unified regulations for data format, synchronization mode, transmission speed, transmission step, error detection and correction mode and control character definition, 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 485 communication effective communication distance is only 100 meters short if no signal repeater is added, so that the control field and the remote data transmission performance are greatly limited. The mode of adopting 485 serial communication modules to change CAN communication modules for remote integrated alarm system is adopted in original communication distance increase, and the mode of adopting CAN bus has the problems that the complex environment is difficult to construct, the construction cost is high, the installation time is long, the maintenance is difficult, the equipment is not easy to increase, and the like.
Accordingly, further improvements and improvements are needed in the art.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems that complex environment is difficult to construct, construction cost is high, installation time is long, equipment is difficult to maintain and the like, the utility model provides a 485-conversion radio station, and the communication distance can be effectively prolonged to 3 KM.
A remote radio centralized alarm system comprises a plurality of slave stations for collecting alarm information, a master station for monitoring the alarm information of the slave stations in real time and outputting the alarm information, and an alarm terminal for outputting an alarm signal. The output end of the slave station is in communication connection with the input end of the master station through a communication module, a communication conversion module used for prolonging the communication distance is arranged on the communication module, the output end of the master station is connected with the alarm terminal, the communication module is a 485 serial communication module, and the communication conversion module is a wireless communication module.
Furthermore, the circuits at two ends of the wireless communication module are respectively provided with a communication lightning protection module.
Preferably, the 485 serial communication module is converted into the wireless communication module to be in short circuit with the terminal resistor, and the tail end is in short circuit with the terminal resistor from the station equipment.
The remote radio centralized alarm system has the beneficial effects that the traditional PLC-485 bus communication is converted into a radio wave protocol through data, and the data is stably transmitted to the ultra-remote PLC controller through radio waves. The method has the advantages of suitability for complex conditions, construction cost reduction, convenience in installation and maintenance, flexible networking structure and long coverage range. And the PLC networking centralized alarm system of the whole plant area is realized.
Drawings
Fig. 1 is a partial structural schematic diagram of a remote radio centralized alarm system in embodiment 1 of the present invention.
Detailed Description
The following detailed description of the present invention will be made in conjunction with the accompanying drawings, but the following examples are merely illustrative of preferred embodiments, which are provided to assist understanding of the present invention, and are not to be construed as limiting the present invention.
Detailed description of the preferred embodiment 1
The utility model provides a long-range radio alarm system, as shown in FIG. 1, it is including a plurality of slave stations that are used for gathering alarm information, the main website that is used for real-time supervision slave station alarm information and outputs 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.
Furthermore, the communication module is a 485 serial communication module, the communication conversion module is a wireless communication module, the output end of the slave station sends data to the wireless communication module through the 485 serial communication module, the wireless communication module receives the data and then transmits the data to the input end of the master station through a 485 bus, the two wireless communication modules are arranged, the two wireless communication modules are coupled through radio waves, the output end of the slave station is connected with the 485 serial communication module, the 485 serial communication module is connected with the wireless communication module, and the wireless communication module is connected with the input end of the master station through 485 communication cables.
Specifically, a communication port of a master station PLC controller is set to be in a 485 communication mode, pins 3 (A) and 8(B) of a frame 9 connector of the 485 port are connected with pins A and B of a 485-conversion radio module through a 485 communication cable, and two wireless communication modules are coupled through radio waves.
Specifically, the wireless communication module converts the 485_ modbusRTU serial communication information frame into a radio wave protocol frame, and the transmission mode is a bidirectional transparent conversion mode. And all data of the serial frame is filled into the data field of the wireless message frame in sequence. The converter receives and converts data as soon as it detects that there is data on the serial bus. Similarly, a message to the radio is forwarded one frame at once upon receiving one frame, and the data in the data domain of the message to the radio is converted into serial frames in sequence.
Furthermore, the communication lightning protection modules are arranged on the circuits at the two ends of the wireless communication module IV respectively, so that the 485 communication module and the slave station PLC controller are effectively prevented from being punctured by low-altitude thunderstorm.
Preferably, the 485 serial communication module is converted into a wireless communication module, the fourth end of the wireless communication module is in short circuit with the terminal resistor, the slave station equipment at the tail end is in short circuit with the terminal resistor, reflected waves on a network are absorbed, and signal strength is effectively enhanced.
Further, the slave station comprises a slave station PLC controller used for compiling a slave station communication program and a data input program, and a communication port of the slave station PLC controller is a 485 communication port.
The feeding system further comprises an alarm triggering device arranged in the feeding area, wherein the alarm triggering device 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 through a control circuit.
Specifically, the first intermediate relay is connected with the slave station PLC controller through a control circuit.
Specifically, the alarm triggering device receives an alarm signal, converts a 220V alarm signal into a 24V weak point signal through a first intermediate relay, transmits the 24V weak point signal to the slave station PLC, and compiles a Modbus _ RTU slave station communication program and a data image input program in the slave station PLC.
Furthermore, the master station comprises a master station PLC controller (fifth) which is in communication connection with the slave station PLC controller (third), the master station PLC controller (fifth) 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 (fifth).
Specifically, the master station PLC controller compiles a Modbus _ RTU master station program, 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 outputs the image to the master station PLC controller.
Further, 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 corresponding to the master station PLC controller, the second intermediate relay attracts 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 through a control circuit.
Further, the alarm terminal comprises a sound-light alarm and a communication module for connecting the mobile equipment.
Further, communication module is including being used for transmitting alarm information to the thing networking communication module, thing networking communication module and master station PLC controller fifth 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.
When the remote centralized alarm system is used specifically, a master station PLC (programmable logic controller) compiles a Modbus _ RTU (remote terminal unit) master station program, the master station feeds back alarm data frames of each slave station to the master station through a mode of polling the slave stations, the master station sends images to the master station PLC to output point positions, coils corresponding to a second intermediate relay attract the master station PLC, and a corresponding audible and visual alarm device (c) sends out an alarm signal.
Embodiments of the present invention, it should be understood that the above-described embodiments are illustrative and should not be construed as limiting the present invention, and that those skilled in the art can make changes, modifications, substitutions and alterations to the above-described embodiments without departing from the principle and spirit of the present invention, and that all such changes in combination are intended to be within the scope of the present invention.
Claims (9)
1. The utility model provides a long-range radio centralized alarm system, includes a plurality of slave stations that are used for gathering alarm information, is used for real-time supervision slave station alarm information and outputs the main website of alarm information which characterized in that: the output end of the slave station is in communication connection with the input end of the master station through a communication module, the communication module is provided with a wireless communication module for prolonging the communication distance, and the output end of the master station is connected with an alarm terminal;
the communication module is 485 serial communication module, wireless communication module adopts the wireless digital transmission radio station, the output of slave station passes through 485 serial communication module and sends data to wireless communication module, and wireless communication module receives and passes to the input of main website through the 485 bus with data again after the data, wireless communication module sets up two, couples through radio wave between two wireless communication module, all be connected through 485 communication cables between the output of slave station and the 485 serial communication module, between 485 serial communication module and the wireless communication module, between wireless communication module and the input of main website.
2. The remote radio centralized alarm system of claim 1, wherein: and the circuits at two ends of the wireless communication module are respectively provided with a communication lightning protection module.
3. The remote radio centralized alarm system of claim 1, wherein: the 485 serial communication module is converted into a wireless communication module to be in short circuit with the terminal resistor, and the tail end slave station device is in short circuit with the terminal resistor.
4. The remote radio centralized alarm system of claim 1, wherein: the slave station comprises a slave station PLC controller used for compiling a slave station communication program and a data input program, and a communication port of the slave station PLC controller is a 485 communication port.
5. The remote radio centralized alarm system of claim 4, 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 used 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.
6. The remote radio centralized alarm system of claim 4, wherein: the master station comprises a master station PLC controller in communication connection with the slave station PLC controllers, the master station PLC controller polls the slave stations to obtain the slave station alarm data, and the alarm data received by the slave stations are mapped to corresponding output points of the master station PLC controller.
7. The remote radio centralized alarm system of claim 6, wherein: and second intermediate relays for converting alarm signals are correspondingly arranged between each output point position of the master station PLC and the alarm terminal, each second intermediate relay is respectively connected with the output point position of the corresponding master station PLC, the second intermediate relays attract coils after receiving alarm information of the corresponding output point position of the master station PLC, and the alarm terminal connected with the second intermediate relays outputs the alarm signals.
8. The remote radio centralized alarm system of claim 7, wherein: the alarm terminal comprises an audible and visual alarm and a communication module used for being connected with the mobile equipment.
9. The remote radio centralized alarm system of claim 8, wherein: communication module is including being used for transmitting alarm information to the thing networking's thing networking communication module, thing networking communication module and the output communication connection of main website PLC controller.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121216434.7U CN215769450U (en) | 2021-06-02 | 2021-06-02 | Remote radio centralized alarm system |
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| CN202121216434.7U CN215769450U (en) | 2021-06-02 | 2021-06-02 | Remote radio centralized alarm system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115278571A (en) * | 2022-07-06 | 2022-11-01 | 明阳智慧能源集团股份公司 | Data wireless communication method between wind generating set and remote equipment |
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2021
- 2021-06-02 CN CN202121216434.7U patent/CN215769450U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115278571A (en) * | 2022-07-06 | 2022-11-01 | 明阳智慧能源集团股份公司 | Data wireless communication method between wind generating set and remote equipment |
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