CN116017704A - Wireless gateway for mechanical parking equipment controller communication - Google Patents
Wireless gateway for mechanical parking equipment controller communication Download PDFInfo
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- CN116017704A CN116017704A CN202211621790.6A CN202211621790A CN116017704A CN 116017704 A CN116017704 A CN 116017704A CN 202211621790 A CN202211621790 A CN 202211621790A CN 116017704 A CN116017704 A CN 116017704A
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Abstract
The invention discloses a wireless gateway for communication of a mechanical parking device controller, which can realize wireless communication among a plurality of controllers of the mechanical parking device, simplify wiring, reduce cost, facilitate installation and avoid damage to influence normal communication.
Description
Technical Field
The invention relates to the technical field of mechanical parking equipment, in particular to a wireless gateway for communication of a mechanical parking equipment controller.
Background
To increase land resource utilization, more automobiles are parked in a limited space, and many cities are actively applying mechanical parking equipment (i.e., a stereo garage). The mechanical parking equipment of a certain scale generally adopts a plurality of controller systems, and at present, the communication among the plurality of controllers is generally realized through wired connection such as flexible cables, the connection communication mode is complex in wiring, more resources are occupied, the input cost is high, and part of controllers are arranged on moving parts of the mechanical parking equipment, so that inconvenience is brought to the cable connection, and the problems that the cable is worn or an internal conductive line is damaged to influence normal communication and the like are extremely easy to occur when the mechanical parking equipment is operated.
Disclosure of Invention
Aiming at the technical problems that in the prior art, a plurality of controllers in the mechanical parking equipment are connected through flexible cables, the wiring is complex, the input cost is high, the cables on moving parts are inconvenient to install and the cables are easy to damage, the invention provides the wireless gateway for the communication of the controllers of the mechanical parking equipment, which can realize the wireless communication among the controllers of the mechanical parking equipment, simplify the wiring, reduce the cost, facilitate the installation and avoid the damage to influence the normal communication.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the wireless gateway comprises a master controller and a plurality of slave controllers, wherein the wireless gateway comprises a master side gateway and a plurality of slave side gateways, and is characterized in that one end of the master side gateway is connected with the master controller through a first communication interface, the other end of the master side gateway is connected with one end of the slave side gateway through a wireless channel, the other ends of the slave side gateways are connected with the slave controllers in a one-to-one correspondence manner through second communication interfaces, the master side gateway and the slave side gateways realize wireless communication through wireless modules, and one slave side gateway occupies one wireless channel in the wireless communication process, and the master side gateway realizes communication with different slave side gateways through channel switching;
when the wireless channel is switched, adopting an adaptive channel allocation mode, wherein the adaptive channel allocation step comprises the following steps:
s1, the master side gateway acquires a first channel number from the master controller;
s2, the master side gateway automatically distributes a first channel number to the corresponding slave side gateway according to the module number of the slave controller;
s3, the slave side gateway receives the first channel number and sends the first channel number to a corresponding slave controller;
s4, the slave side gateway acquires a second channel number from the corresponding slave controller;
s5, the slave side gateway sends a second channel number to the master side gateway.
It is further characterized in that,
the primary side gateway comprises a first configuration switch, a first MCU, a first 485 module, a first wireless transmitting module and a first wireless receiving module, wherein the first 485 module is connected with the first MCU through a first serial port, the first wireless transmitting module and the first wireless receiving module are respectively connected with the first MCU through a first SPI port and a second SPI port, the first configuration switch is connected with the first MCU through a first GPIO port, and the first MCU controls the first configuration switch to be opened or closed through the first GPIO port;
in step S1, the primary side gateway communicates with the main controller through the first 485 module, and the primary side gateway obtains the first channel number by analyzing a data sequence sent by the main controller, or obtains the first channel number by controlling the first configuration switch to be turned on;
in step S2, the first MCU changes the wireless channel number of the wireless channel through the first SPI port and the second SPI port according to the first channel number;
the slave side gateway comprises a second configuration switch, a second MCU, a second 485 module, a second wireless transmitting module and a second wireless receiving module, wherein in the same slave side gateway, the second 485 module is connected with the second MCU through a second serial port, the second wireless transmitting module and the second wireless receiving module are respectively connected with the second MCU through a third SPI port and a fourth SPI port, the second configuration switch is connected with the second MCU through a second GPIO port, and the second MCU controls the second configuration switch to be opened or closed through the second GPIO port;
in step S3, the slave side gateway obtains the first channel number by controlling the second configuration switch to be turned on;
the first MCU and the second MCU are used for processing serial port communication signals and SPI communication signals;
the primary side gateway adopts a fixed channel mode in the operation process;
the master side gateway and the slave side gateway adopt transparent transmission in a point-to-point mode when transmitting information, and adopt buffer time division transmission, wherein the buffer time division transmission means that: when the main-side gateway receives the data sent by the main controller, firstly judging whether a communication channel is idle, if so, directly sending the data, if so, storing the data into a buffer area, and after the communication channel is idle, sequentially sending the cached data through a time division technology;
when the buffered data is sequentially transmitted through a time division technology, the data is transmitted and received once within a fixed time through a fixed time slot length, and if the transmitting and receiving time exceeds the fixed time, the transmitting and receiving operation is automatically abandoned.
The method of the invention has the following beneficial effects: in the mechanical parking equipment, only the master side gateway is arranged on the master controller side of the mechanical parking equipment, the slave side gateway is arranged on the slave controller side, and the master side gateway and the slave side gateway are in wireless communication, so that more connecting wires are not required to be arranged, wiring is simplified, and cost is reduced.
In the installation process, only one end of the master side gateway is connected with the master controller through the interface, and one end of the slave side gateway is correspondingly connected with the slave controller through the interface, so that the installation is convenient.
The communication between the master side gateway and the different slave side gateways is realized through channel switching, so that the problem that connecting wires are worn or damaged due to the movement of parts of the mechanical parking equipment is solved, and the normal communication between the master controller and the slave controllers in the mechanical parking equipment is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of a primary side gateway of the present invention;
FIG. 2 is a block diagram of a slave-side gateway of the present invention;
FIG. 3 is a schematic diagram of a communication connection structure between a master controller and a slave controller through a master-side gateway and a slave-side gateway according to the present invention;
FIG. 4 is a schematic diagram of a master controller and a slave controller according to the present invention using a transparent transmission in a point-to-point mode;
fig. 5 is a schematic diagram of a structure of a communication port of a main controller 485 in transmitting and receiving signals;
fig. 6 is a waveform diagram of signals sent by and received from a primary gateway according to the present invention;
fig. 7 is a waveform diagram of sending analytic data by the primary side gateway according to the present invention;
FIG. 8 is a waveform diagram of the invention for receiving parsed data from a side gateway;
fig. 9 is a waveform diagram of signals transmitted from a primary gateway and received by a secondary gateway according to the present invention;
fig. 10 is a waveform diagram of sending analytic data by the primary side gateway according to the present invention;
fig. 11 is a waveform diagram of the primary side gateway receiving parsing data according to the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It is noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present invention and in the foregoing figures, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or device.
The following provides a specific embodiment of a wireless gateway for communication of a mechanical parking equipment controller, the controller for controlling the mechanical parking equipment comprises a main controller 1 and a plurality of slave controllers 2, the wireless gateway comprises a main side gateway 3 and a plurality of slave side gateways 4, one end of the main side gateway 3 is connected with the main controller 1 through a first communication interface 5, the other end of the main side gateway is connected with one end of the slave side gateway 4 through a wireless channel, the other end of the slave side gateway 4 is connected with the slave controllers 2 through a second communication interface 6 in a one-to-one correspondence manner, the first communication interface 5 and the second communication interface 6 are 485 serial communication interfaces, the main side gateway 3 and the slave side gateways 4 are in wireless communication, one slave side gateway 4 occupies one wireless channel in the wireless communication process, the slave controllers respectively use different channels, the channel numbers are fixed, the main side gateway 3 is determined through channel numbers Addr 1-Addrn acquired by the main side gateway, and the main side gateway 3 realizes communication with the different slave side gateways 4 through channel switching.
The primary side gateway 3 includes a first configuration switch 31, a first MCU 32, a first 485 module 33, a first wireless transmitting module 34, and a first wireless receiving module 35, where the first 485 module 33 is connected to the first MCU 32 through a first serial port (i.e. USART 1) 39, the first wireless transmitting module 34 and the first wireless receiving module 35 are connected to the first MCU 32 through a first SPI port (SPI 1) 36 and a second SPI port (SPI 2) 37, respectively, and the first configuration switch 31 is connected to the first MCU 32 through a first GPIO port (i.e. GPIO 1) 38. The first 485 module is used for realizing communication with the master controller and the slave side gateway, the first wireless transmitting module 34 is used for signal transmission, the first SPI port is used for communication between the first wireless receiving module and the first MCU, the first wireless receiving module 35 is used for signal receiving, the second SPI port is used for communication between the second wireless receiving module and the first MCU, and the first MCU 32 controls the first configuration switch 31 to be opened or closed through the first GPIO port (namely GPIO 1) 38, so that the configuration of the working mode and the channel number of the master side gateway can be realized conveniently.
The slave side gateway 4 comprises a first slave side gateway to an Nth slave side gateway, N is a positive integer, the slave controllers comprise a first slave controller to an Nth slave controller according to the number of the slave controllers, the first slave side gateway to the Nth slave side gateway are connected with the first slave controller to the Nth slave controller in a one-to-one correspondence mode, each of the first slave side gateway to the Nth slave side gateway comprises a second configuration switch 41, a second MCU 42, a second 485 module 43, a second wireless transmitting module 44 and a second wireless receiving module 45, the second 485 module 43 is connected with the second MCU 42 through a second serial port (namely USART 2) 49, the second wireless transmitting module 44 and the second wireless receiving module 45 are respectively connected with the second MCU 42 through a third SPI port (namely SPI 3) 46 and a fourth SPI port (namely SPI 4) 47, the second configuration switch 41 is connected with the second MCU 42 through a second GPIO port 48, and the second MCU 42 is controlled to be turned on or off through the second GPIO port (namely GPIO 2) 48. The second 485 module is used for realizing communication with the slave controller and the master-side gateway, the second wireless transmitting module 34 is used for signal transmission, the third SPI port 46 is used for communication between the second wireless receiving module and the second MCU, the second wireless receiving module 35 is used for signal receiving, the fourth SPI port 47 is used for communication between the second wireless receiving module and the second MCU, and the second MCU 42 controls the second configuration switch 31 to be opened or closed through the second GPIO port 48, so that the configuration of the working mode and the channel number of the master-side gateway is realized conveniently.
In the mechanical parking equipment, only the master side gateway is arranged on the master controller side of the mechanical parking equipment, the slave side gateway is arranged on the slave controller side, communication can be realized between the master side gateway and the slave side gateway through a wireless communication network, more connecting wires are not required to be arranged, wiring is simplified, and cost is reduced. In the installation process, only one end of the master side gateway is connected with the master controller through the interface, and one end of the slave side gateway is correspondingly connected with the slave controller through the interface, so that the installation is convenient.
When the wireless communication gateway is adopted to carry out wireless communication and the wireless channel is switched, an adaptive channel allocation mode is adopted, and the adaptive channel allocation step comprises the following steps:
s1, the primary side gateway obtains a first channel number from the main controller, specifically, the primary side gateway obtains the first channel number by analyzing a data sequence sent by the main controller, or obtains the first channel number by controlling a first configuration switch to be opened. In this embodiment, the first channel number is Addr (Addr is an address code), including Addr1 to Addr2 (the channel numbers Addr1 to Addr2 are used to wirelessly receive the channel signals from the gateway on the slave side). The primary side gateway realizes channel switching through the first SPI port 36 and the second SPI port 37 according to the first signal Addr, and the first channel number is automatically allocated according to the module number of the secondary controller.
The main controller obtains the data sent and received by the first 485 module through serial port debugging software by sending and receiving signals through the first 485 module, and the main controller comprises the following components: the master controller transmits data and a transmission time 101, and the master controller receives data and a reception time 102.
S2, the master-side gateway sends a first channel number to the corresponding slave-side gateway through a first wireless transmitting module according to the module number of the slave controller; the first MCU changes the wireless channel number of the wireless channel through the first SPI port and the second SPI port according to the first channel number.
S3, the slave side gateway receives a first channel number sent by the master side gateway through a second wireless receiving module 45, and sends the first channel number to a corresponding slave controller through a second 485 module; the slave side gateway obtains a first channel number by controlling the second configuration switch to be turned on;
s4, the slave side gateway acquires a second channel number from the corresponding slave controller; the second channel number is addr+128 (the channel number addr+128 is the same as the channel number received by the primary side gateway wirelessly);
s5, the slave side gateway sends the second channel number to the master side gateway through the second wireless transmitting module 44, and the master side gateway receives the second channel number through the second wireless receiving module 35.
In the channel allocation and signal transmission process described above, the signal sent by the master controller and the SPI data waveform received from the controller are shown in fig. 6, and in fig. 6, the curves and data are data from the example in-operation logic analyzer, and the data waveforms include a master-side gateway sending data waveform 111, a master-side gateway sending data to a master-side gateway receiving data total time 112 (13.81 ms total time), and a slave-side gateway receiving data waveform 113.
Embodiment of sending resolved data waveforms by the primary side gateway-see fig. 7, the resolved data waveforms include: the logic analyzer parses the SPI data 114, and the parsed SPI data content is consistent with the data sent by the main controller.
Receiving a resolved data waveform from a side gateway see also fig. 8, the resolved data waveform comprising: the logic analyzer parses the SPI data 115, the parsed SPI data content being consistent with the master controller received data.
In the channel allocation and signal transmission process described above, the signal sent by the master controller and the SPI data waveform received from the controller are shown in fig. 9, and in fig. 9, the curves and data are data from the example in-operation logic analyzer, and the data waveforms include a master-side gateway sending data waveform 121, a master-side gateway sending data to a master-side gateway receiving data total time 122 (13.81 ms total time), and a slave-side gateway receiving data waveform 123.
The primary side gateway sends an analytic data waveform embodiment see fig. 10. The analytic data waveform includes: the logic analyzer parses the SPI data 124, which is consistent in content with the master controller transmit data.
Receiving a parsed data waveform from a side gateway see also fig. 11, the parsed data waveform comprising: the logic analyzer parses the SPI data 125, the parsed SPI data content being consistent with the master controller received data.
According to the transmission data waveform diagrams in the first embodiment and the second embodiment, the wireless gateway can effectively transmit signals among a plurality of controllers in the mechanical parking equipment, and the signals are stable. In the channel allocation and signal transmission process, the first MCU (i.e. the first microprocessor) and the second MCU (i.e. the second microprocessor) do not process data, but are only used for processing serial port communication signals and SPI communication signals, and all fault-tolerant technologies are realized by the wireless chip, so that the operation efficiency is improved, and the transmission protocol and the communication strategy are self-agreed by the master controller and the slave controller.
The primary side gateway adopts a fixed channel mode in the operation process, which is beneficial to further improving the operation efficiency of the system and has strong instantaneity. The master-side gateway and the slave-side gateway adopt a point-to-point mode for transparent transmission when transmitting information, and adopt buffer time division transmission, wherein the buffer time division transmission refers to: when the main-side gateway receives data sent by the main controller, firstly judging whether a communication channel is idle, if so, directly sending the data, if so, storing the data into a buffer area, and after the communication channel is idle, sequentially sending the cached data through a time division technology; when the buffered data is sequentially transmitted through the time division technology, the data is transmitted and received once in a fixed time through the fixed time slot length, if the transmitting and receiving time exceeds the fixed time, the transmitting and receiving operation is automatically abandoned without any processing, so that the influence of subsequent information transmission is avoided, and the instantaneity is ensured. And the buffer time division transmission mode is adopted, so that the influence of channel switching delay is prevented, and when a channel is occupied, data are buffered, so that the data loss is prevented. In addition, the determination of the time slot length fully considers the characteristics of communication among the controllers of the mechanical parking equipment, and when a wireless channel fails, an interruption alarm is generated, namely, the main controller cannot receive the second channel number information sent by the slave controller in a certain time or the slave controller cannot receive the first channel number information sent by the main controller in a certain time, the wireless communication is indicated to fail, and the control system for controlling the mechanical parking equipment further comprises a display, wherein the display displays the interruption of communication failure.
The above are only preferred embodiments of the present application, and the present invention is not limited to the above examples. It is to be understood that other modifications and variations which may be directly derived or contemplated by those skilled in the art without departing from the spirit and concepts of the present invention are deemed to be included within the scope of the present invention.
Claims (10)
1. The wireless gateway comprises a master controller and a plurality of slave controllers, wherein the wireless gateway comprises a master side gateway and a plurality of slave side gateways, and is characterized in that one end of the master side gateway is connected with the master controller through a first communication interface, the other end of the master side gateway is connected with one end of the slave side gateway through a wireless channel, the other ends of the slave side gateways are connected with the slave controllers in a one-to-one correspondence manner through second communication interfaces, the master side gateway and the slave side gateways realize wireless communication through wireless modules, and one slave side gateway occupies one wireless channel in the wireless communication process, and the master side gateway realizes communication with different slave side gateways through channel switching;
when the wireless channel is switched, adopting an adaptive channel allocation mode, wherein the adaptive channel allocation step comprises the following steps:
s1, the master side gateway acquires a first channel number from the master controller;
s2, the master side gateway automatically distributes a first channel number to the corresponding slave side gateway according to the module number of the slave controller;
s3, the slave side gateway receives the first channel number and sends the first channel number to a corresponding slave controller;
s4, the slave side gateway acquires a second channel number from the corresponding slave controller;
s5, the slave side gateway sends a second channel number to the master side gateway.
2. The wireless gateway for communication of a mechanical parking device controller of claim 1, wherein the primary side gateway comprises a first configuration switch, a first MCU, a first 485 module, a first wireless transmitting module, and a first wireless receiving module, the first 485 module is connected to the first MCU through a first serial port, the first wireless transmitting module and the first wireless receiving module are respectively connected to the first MCU through a first SPI port and a second SPI port, the first configuration switch is connected to the first MCU through a first GPIO port, and the first MCU controls the first configuration switch to be turned on or off through the first GPIO port.
3. The wireless gateway for communication with a mechanical parking device controller according to claim 2, wherein in step S1, the primary side gateway acquires the first channel number by parsing a data sequence transmitted from the main controller or acquires the first channel number by controlling the first configuration switch to be turned on.
4. A wireless gateway for communication of a mechanical parking device controller according to claim 3, wherein in step S2, the first MCU changes the wireless channel number of the wireless channel through the first SPI port and the second SPI port according to the first channel number.
5. The wireless gateway for communication of a mechanical parking device controller according to any one of claims 1 to 4, wherein the slave side gateways each comprise a second configuration switch, a second MCU, a second 485 module, a second wireless transmitting module and a second wireless receiving module, in the same slave side gateway, the second 485 module is connected with the second MCU through a second serial port, the second wireless transmitting module and the second wireless receiving module are respectively connected with the second MCU through a third SPI port and a fourth SPI port, the second configuration switch is connected with the second MCU through a second GPIO port, and the second MCU controls the second configuration switch to be turned on or off through the second GPIO port.
6. The wireless gateway for communication with a mechanical parking device controller according to claim 5, wherein in step S3, the slave side gateway acquires the first channel number by controlling the second configuration switch to be turned on.
7. The wireless gateway for mechanical parking device controller communication of claim 1, wherein the first and second MCUs are configured to process serial communication signals, SPI communication signals.
8. The wireless gateway for communication with a mechanical parking device controller of claim 1, wherein the primary side gateway employs a fixed channel mode during operation.
9. The wireless gateway for communication with a mechanical parking device controller of claim 1, wherein the master-side gateway and slave-side gateway transmit information using a peer-to-peer mode transparent transmission and using buffered time-division transmission, wherein the buffered time-division transmission means: when the main side gateway receives the data sent by the main controller, firstly judging whether a communication channel is idle, if so, directly sending the data, if so, storing the data into a buffer area, and after the communication channel is idle, sequentially sending the cached data through a time division technology.
10. The wireless gateway for communication with a mechanical parking device controller of claim 9, wherein when the buffered data is sequentially transmitted by time division, the transceiving is completed once within a fixed time by a fixed slot length, and the transceiving is automatically aborted if the transceiving time exceeds the fixed time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211621790.6A CN116017704A (en) | 2022-12-16 | 2022-12-16 | Wireless gateway for mechanical parking equipment controller communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211621790.6A CN116017704A (en) | 2022-12-16 | 2022-12-16 | Wireless gateway for mechanical parking equipment controller communication |
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| CN116017704A true CN116017704A (en) | 2023-04-25 |
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| CN202211621790.6A Withdrawn CN116017704A (en) | 2022-12-16 | 2022-12-16 | Wireless gateway for mechanical parking equipment controller communication |
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- 2022-12-16 CN CN202211621790.6A patent/CN116017704A/en not_active Withdrawn
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Application publication date: 20230425 |