CN209787175U - System for switching and expanding multiple wireless transmission modes - Google Patents
System for switching and expanding multiple wireless transmission modes Download PDFInfo
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- CN209787175U CN209787175U CN201920467768.8U CN201920467768U CN209787175U CN 209787175 U CN209787175 U CN 209787175U CN 201920467768 U CN201920467768 U CN 201920467768U CN 209787175 U CN209787175 U CN 209787175U
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Abstract
The utility model provides a system for switching and expanding multiple wireless transmission modes, wherein an upstream host computer communicates with a relay through a wireless transmission module, and the relay communicates with each node at the downstream through the wireless transmission module; the wireless transmission modules comprise a plurality of types, and the sizes of all types of wireless transmission modules are consistent; different types of wireless transmission modules used in the host are integrated; each node is provided with a type of wireless transmission module, and the type of the wireless transmission module can be replaced at will; the host, the relay and the node are shielded from the difference of the functions of the wireless transmission modules of different types through software. The utility model can seamlessly switch different wireless transmission modes, only need to replace wireless transmission modules with the same size, and greatly improve the development efficiency; the product data has high repeated utilization rate and the product cost is low; software classification development is carried out, and the iteration cycle is short; the method has the advantages of classifying and developing, shielding difference, reducing the maintenance amount of actual products, and greatly improving the flexibility of application by utilizing the infinite extension of the relay.
Description
Technical Field
The utility model relates to a wireless transmission monitored control system that is used for power environment monitoring trade and security protection control trade especially relates to a system that multiple wireless transmission mode switches and extends.
background
In the existing power environment monitoring industry and security monitoring industry, the current mainstream monitoring mode is still transmitted in a wired mode. With the development of industrial internet of things, a wireless transmission mode can slowly replace a wired transmission mode. Various wireless transmission modes, such as Sub-G (e.g., 433Hz, Lora, etc.), 2.4GHz (e.g., Zigbee, BT, etc.), and other wireless transmission technologies have been struggled. According to different application scenarios, it is common practice that only one wireless transmission mode can be adopted, if different wireless transmission modes are to be changed, the system needs to be redesigned and pulled to move the whole body, and the following defects exist:
1. the same application product is only redesigned due to different wireless transmission modes, the utilization rate of data is low, the coupling function is increased, and the idle work is increased;
2. The availability is low, and the corresponding cost is high;
3. The development period is prolonged;
4. The software iteration development is not good;
5. The amount of product maintenance increases.
in addition, due to the limitation of the distance of wireless transmission, the application range of the existing wireless transmission system is narrow, and the expansibility is not good.
SUMMERY OF THE UTILITY MODEL
the to-be-solved technical problem of the utility model is how to realize the seamless switching of multiple wireless transmission mode, improves the expansibility of system simultaneously.
in order to solve the technical problem, the technical scheme of the utility model is to provide the system that multiple wireless transmission mode switches and extends, its characterized in that: the system comprises a relay, wherein an upstream host communicates with the relay through a wireless transmission module, and the relay communicates with each downstream node through the wireless transmission module;
The wireless transmission modules comprise a plurality of types, and the sizes of all types of wireless transmission modules are consistent;
Different types of wireless transmission modules used in the host are integrated; each node is provided with a type of wireless transmission module, and the type of the wireless transmission module can be replaced at will; the host, the relay and the node are shielded from the difference of the functions of the wireless transmission modules of different types through software.
Preferably, the node comprises a node controller and the wireless transmission module, the node controller collects information, shields function use differences of different wireless transmission modes, and performs wireless transmission communication through the wireless transmission module to reach the relay.
Preferably, the relay includes a relay host and a relay node connected to each other, the relay host connects to a downstream node, and the relay node connects to an upstream host.
More preferably, the relay host comprises a relay host main control processor and different types of wireless transmission modules, and the information of each downstream node is collected through the wireless transmission module corresponding to the downstream node and is processed and analyzed in the relay host main control processor;
The relay node comprises a relay node controller and a wireless transmission module, wherein the relay node controller collects information of a master control processor of the relay host, shields function use differences of different wireless transmission modes, and carries out wireless transmission communication through the wireless transmission module to reach the host at the upstream.
Preferably, the host at the upstream includes a main control processor and the wireless transmission modules of different types, the information of each relay is collected by the wireless transmission modules, and the main control processor processes and analyzes the collected information of each relay.
Preferably, the wireless transmission module comprises a main control MCU and a radio frequency module, and the main control MCU and the radio frequency module are connected and communicated by using a serial port; the radio frequency modules of different types of wireless transmission modules are different.
More preferably, the master MCU uses a chip EFM 32.
more preferably, the pin of the master control MCU is led out to a soldering point of the external butt joint of the wireless transmission module.
More preferably, the radio frequency module comprises a zigbee radio frequency module, a 433M radio frequency module.
more preferably, different types of the radio frequency module pairs are provided with different radio frequency module antenna radio frequency circuits.
More preferably, the specific method for the host, the relay and the node to mask the difference of the functions of the different types of wireless transmission modules through software is as follows:
step 1: various functional drives of a main control MCU of the wireless transmission module are realized;
Step 2: the communication between the main control MCU of the wireless transmission module and the radio frequency module is realized, and different receiving and transmitting functions are called through serial port communication when different radio frequency modules are used;
And step 3: the method comprises the steps that the same custom protocol is nested and used on an application layer to achieve the purpose of using different types of protocols, wherein different fields are selected by a wireless type field to treat different types of wireless transmission modules differently, a sending address field and a receiving address field are used for identifying a wireless network, a channel field is used for identifying different function types and corresponding addresses, and different functions correspond to different command words;
and 4, step 4: after the host, the relay and the node are networked and registered, the master control MCU acquires original data through driving, after a layer of custom protocol is packaged, a receiving and transmitting function of the radio frequency module is called through a serial port and is wirelessly transmitted to an opposite terminal, and the opposite terminal analyzes the original data according to the custom protocol to obtain the original data.
Further, in step 1, the various function drivers of the main control MCU of the wireless transmission module include a UART serial port driver, an ADC analog-to-digital conversion driver, a DI digital input driver, a DO digital output driver, and different functions corresponding to the serial port, current mode analog input, voltage mode analog input, digital input, and digital output of the hardware pin resource.
More preferably, if the wireless signal cannot be transmitted due to the shielding obstacle in the expanded scene, the shielding obstacle is eliminated through the relay, and the specific method is as follows: and punching a hole on the shielding barrier, leading out an antenna of the wireless transmission module in the relay node through the hole on the shielding barrier, connecting an antenna extension line, and communicating with the wireless transmission module of the host at the upstream through the antenna extension line.
compared with the prior art, the utility model provides a system that multiple wireless transmission mode switches and extends has following beneficial effect:
1. Different wireless transmission modules are switched by using hardware, functional differences are realized by using software, different wireless transmission modes can be switched seamlessly, only different wireless transmission modules with the same size need to be replaced, and the development efficiency is greatly improved;
2. The product data is high in repeated utilization rate, and the product cost is low;
3. The development period is shortened;
4. software classification development is carried out, and the iteration cycle is short;
5. classification development, difference shielding and actual product maintenance reduction;
6. The relay can be infinitely expanded, and the application flexibility is greatly improved.
Drawings
The drawings illustrate, by way of example, the invention and do not limit the invention. Like reference numerals refer to like elements.
fig. 1 is a block diagram of a system for switching and expanding a plurality of wireless transmission modes according to this embodiment;
FIG. 2 is a hardware block diagram of a wireless transmission module;
FIG. 3 is a diagram of a custom protocol;
FIG. 4 is a schematic diagram of an extended distance scenario;
FIG. 5 is a diagram illustrating a quantity expansion scenario;
Fig. 6 is a schematic diagram of an obstacle elimination scenario.
Detailed Description
The disclosure may best be understood by reference to the detailed drawings and description set forth herein.
The embodiment mainly uses the host, the relay, the nodes and the wireless transmission module, finally forms different nodes to match different wireless transmission modules, switches to use different wireless transmission modules, and communicates with the host through the relay, thereby greatly facilitating the system for expanding the demand.
As shown in fig. 1, the system for switching and expanding multiple wireless transmission modes provided in this embodiment includes four parts:
the first part is a wireless transmission module, different wireless modules use a hardware PIN2PIN design mode, seamless switching of various wireless transmission modes can be achieved, and function differences are shielded through software, for example, a node 3 originally adopts 433 wireless transmission and wants to adopt Zigbee wireless transmission instead, and only the 433 wireless transmission module is replaced by a hardware Zigbee wireless transmission module with the same size.
the second part is a node, which includes a node controller and a wireless transmission module. The node controller of the node end collects and collects information, the function use difference of different wireless transmission modes is shielded, wireless transmission communication is carried out through the wireless transmission module, and the information reaches the relay host.
The third part is a relay which is used as an intermediate connection between the host and the node, and the application of the wireless product can be greatly expanded by using the relay. The relay is composed of a relay host and a relay node, wherein the relay host is connected with a downstream node, the relay host is connected with the relay node through a serial port, the relay node is connected with an upstream host, data exchange between the downstream node and the upstream host is realized, and the transmission of upstream and downstream data of the equipment network is executed.
the third part is a host which comprises a main control processor and different types of wireless transmission modules used, and the information of each downstream node is collected through the relay through the wireless transmission modules corresponding to the relay nodes and is processed and analyzed in the main control processor.
the structure of the relay host is similar to that of the host at the upstream, the relay host comprises a relay host main control processor and different types of wireless transmission modules, the information of each downstream node is collected through the wireless transmission modules corresponding to the downstream nodes, and the information is processed and analyzed in the relay host main control processor.
The structure of the relay node is similar to that of the downstream node, and the relay node comprises a relay node controller and a wireless transmission module. The relay node controller collects and collects information, shields function use differences of different wireless transmission modes, and performs wireless transmission communication through the wireless transmission module to reach the relay host.
the implementation of the wireless transmission module includes hardware implementation and software implementation.
The hardware implementation steps are as follows:
step 1: the size of the wireless transmission module is determined, as shown in fig. 2, the wiring length X is 20.7mm, the width Y is 26.7mm, and the size is to be as small as possible.
Step 2: the wireless transmission module comprises a main control MCU and a radio frequency module, wherein the main control MCU uses a low power consumption chip EFM32, the radio frequency module replaces a zigbee radio frequency module or a 433M radio frequency module and the like as required, and the main control MCU and the radio frequency module are connected and communicated through a serial port.
And step 3: when the zigbee radio frequency module or the 433M radio frequency module is replaced and used as required, the corresponding antenna radio frequency circuit needs to be adapted, the resistance value of the resistor-capacitor is adjusted, and a tool is used for looking at waveform adjustment and the like.
And 4, step 4: and leading out pin resources (different functions such as serial ports, current mode analog input, voltage mode analog input, digital output and the like) of the main control MCU for wiring, and distributing the pin resources on the butt joint welding points of the wireless transmission module.
And 5: the antenna radio frequency circuit and the radio frequency module in the wireless transmission module are different points, and different types of wireless modules are finally formed, such as a wireless zigbee module, a wireless 433 module and the like.
The software implementation steps are as follows:
Step 1: the EFM32 realizes various function drives of the MCU, relating to UART (serial port) drive, ADC (analog-to-digital conversion) drive, DI (digital input) drive, DO (digital output) drive and the like, and corresponding to different functions of serial ports, current type analog input, voltage type analog input, digital output and the like of hardware pin resources.
Step 2: the EFM32 main control MCU and the radio frequency module are communicated, different radio frequency modules are used, different receiving and transmitting functions are called through serial port communication, zigbee corresponds to zigbee _ send and zigbee _ rec receiving and transmitting functions, 433M corresponds to 433_ send and 433_ rec receiving and transmitting functions, and register receiving and transmitting operations of different radio frequency modules are packaged in the functions.
And step 3: as in fig. 3, the same custom protocol is nested at the application layer for the dual use of different types of protocols, where the wireless type field can be selected from 1: zigbee, 2: 433M, etc. to treat different types of wireless transmission modules differently, the sending address and receiving address fields are used as wireless network identifications, the channel fields are used as identification of different function types and corresponding addresses, and different functions correspond to different command words.
And 4, step 4: after the host, the relay and the node are networked and registered, an EFM32 main control MCU acquires original data through driving, a layer of custom protocol is packaged, a receiving and transmitting function of a radio frequency module is called through a serial port and is wirelessly transmitted to an opposite terminal, and the opposite terminal analyzes according to the custom protocol to obtain the original data.
The embodiment can realize different expansion functions according to different expansion demand scenes.
1. extended distance scene
As shown in fig. 4, the communication distance a of the wireless node 1 is 10 meters, and the relay 1 can be changed into the wireless node 2 with the communication distance b of 100 meters. The connection distance can be lengthened by realizing the relay 1, and the extended distance scene is satisfied. The realization method comprises the following steps:
the hardware uses a wireless module.
The software is modified aiming at the program of the node, and 6 is added to the wireless type field of the custom protocol: and (3) wireless relaying, wherein the channel address is filled with 0, the program acquires the field of the wireless relaying type through an analytic protocol, and has no channel number, the function of the relay 1 is identified, and the received data only needs to be completely fixed and is completely forwarded again, so that the function of routing relay is realized.
2. Extend quantity scenario
assuming that only 20 nodes can be connected to one wireless network, 20 nodes can be constructed in the sub-network through the relay 2, and the total number of the nodes is expanded to 40, as shown in fig. 5. By analogy, the connection quantity can be increased by realizing the relay 2, and the quantity expansion scene is met. The realization method comprises the following steps:
The hardware uses two wireless modules, and the two wireless modules are connected and communicated by a serial port.
The software is divided into two parts: a host portion and a node portion. For the relay host part in the relay 2, the received data needs to be refilled, and the wireless type field of the custom protocol is changed into 6: the method comprises the steps that wireless relay is achieved, a channel address is filled with a real channel address, a program obtains a field of a wireless relay type through an analytic protocol, the field has a channel number, the function of the relay 2 is identified, after the wireless relay is refilled, the program is transmitted to a relay node part of the relay 2 through a serial port of the relay 2 (between a relay host and a relay node), the relay node part of the relay 2 receives the refilled data transmitted through, the program function of the node is directly used, the program is sent to an upstream host to be received and analyzed, and the function of routing relay is achieved.
3. Elimination of obstacle scenes
As shown in fig. 6, if there are some shielding obstacles (such as iron sheets) a in the scene with the expanded number, the wireless signal cannot be transmitted. The obstacle elimination can be achieved by implementing the relay 3, and the obstacle elimination scene is satisfied. The realization method comprises the following steps:
the hardware uses two wireless modules, and the two wireless modules are connected and communicated by a serial port. The hole is punched on the shielding barrier A, and the wireless module at the node end needs to lead the antenna B out through the hole on the shielding barrier A and connect with the antenna extension C. Therefore, the shielding barrier is punched, and the extension line of the antenna extends out, so that the wireless signal can be received.
The software is used as the same as the quantity expansion scene, namely a code of an upper relay host function and a code of an upper relay node function.
Claims (6)
1. The system for switching and expanding multiple wireless transmission modes is characterized in that: the system comprises a relay, wherein an upstream host communicates with the relay through a wireless transmission module, and the relay communicates with each downstream node through the wireless transmission module;
the wireless transmission modules comprise a plurality of types, and the sizes of all types of wireless transmission modules are consistent;
different types of wireless transmission modules used in the host are integrated; each node is provided with a type of wireless transmission module, and the type of the wireless transmission module can be replaced at will; the host, the relay and the node are shielded from the difference of the functions of the wireless transmission modules of different types through software.
2. the system for switching and expanding multiple wireless transmission modes according to claim 1, wherein: the node comprises a node controller and the wireless transmission module, wherein the node controller collects information, shields the function use difference of different wireless transmission modes, and carries out wireless transmission communication through the wireless transmission module to reach the relay.
3. The system for switching and expanding multiple wireless transmission modes according to claim 1, wherein: the relay comprises a relay host and a relay node which are connected with each other, wherein the relay host is connected with a downstream node, and the relay node is connected with an upstream host.
4. The system for switching and expanding multiple wireless transmission modes according to claim 1, wherein: the wireless transmission module comprises a main control MCU and a radio frequency module, and the main control MCU and the radio frequency module are connected and communicated by using a serial port; the radio frequency modules of different types of wireless transmission modules are different.
5. the system for switching and expanding multiple wireless transmission modes according to claim 4, wherein: the radio frequency module comprises a zigbee radio frequency module and a 433M radio frequency module.
6. The system for switching and expanding multiple wireless transmission modes according to claim 4 or 5, wherein: and different types of radio frequency module pairs are provided with different radio frequency module antenna radio frequency circuits.
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| CN201920467768.8U CN209787175U (en) | 2019-04-09 | 2019-04-09 | System for switching and expanding multiple wireless transmission modes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109951221A (en) * | 2019-04-09 | 2019-06-28 | 广州邦讯信息系统有限公司 | A variety of systems wireless transmission method switching and expanded |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109951221A (en) * | 2019-04-09 | 2019-06-28 | 广州邦讯信息系统有限公司 | A variety of systems wireless transmission method switching and expanded |
| CN109951221B (en) * | 2019-04-09 | 2024-03-15 | 广州邦讯信息系统有限公司 | System for switching and expanding multiple wireless transmission modes |
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