CN103107824B - Wireless receiving reflector and wireless communications method - Google Patents
Wireless receiving reflector and wireless communications method Download PDFInfo
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- CN103107824B CN103107824B CN201310014395.6A CN201310014395A CN103107824B CN 103107824 B CN103107824 B CN 103107824B CN 201310014395 A CN201310014395 A CN 201310014395A CN 103107824 B CN103107824 B CN 103107824B
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Abstract
The invention discloses wireless receiving reflector and wireless communications method.Described wireless receiving reflector, comprise the man-machine interface sending/receiving power model for man-machine interface communication, the PLC also comprised for programmable logic controller (PLC) plc communication send/receive power model, and man-machine interface sending/receiving power model be send/receive power model with PLC and is connected by wireless signal.The present invention realizes Wireless data transmission between man-machine interface and PLC, realizes the flexible operating without fixed position; Make the operation of operator to man-machine interface more flexible, debugging for equipment greatly facilitates especially, pick up man-machine interface and want that optional position operates in signal transmission ranges, man-machine interface is without the need to being fixedly mounted on board, the probability that the man-machine interface greatly reduced is collided, also can reduce artificial misoperation; Can take out when needing, man-machine interface can be deposited time unwanted.
Description
Technical field
The present invention relates to signal transmission technology field, be specifically related to a kind of wireless communications method.
Background technology
Current existing automated system, general is all with bundle of lines PLC (ProgrammableLogicController, programmable logic controller (PLC)) be connected with man-machine interface, and be arranged on a fixed position, adopt the mode of above wired connection, dumb, especially great inconvenience is brought to the operation of commissioning device.
Meanwhile, current existing man-machine interface is all fixedly mounted on operating personnel and compares and hold the position that touches, in process of production, easily occurs that man-machine interface is clashed into and the event damaged.
Further, current existing man-machine interface, easily in equipment running process, is not intended to touching inadvertently, thus has carried out misoperation, may bring the injures and deaths of personnel and pecuniary loss.
Summary of the invention
The object of the invention is to disclose a kind of wireless communications method, the mode solving wired connection is dumb, man-machine interface is easily clashed into and the problem of easily misoperation.
For achieving the above object, the present invention adopts following technical scheme:
Wireless receiving reflector, comprise the man-machine interface sending/receiving power model for man-machine interface communication, the PLC also comprised for programmable logic controller (PLC) plc communication send/receive power model, and man-machine interface sending/receiving power model be send/receive power model with PLC and is connected by wireless signal.
Further, man-machine interface sending/receiving power model is identical with the structure that PLC send/receive power model; Man-machine interface sending/receiving power model comprises antenna, connects the monolithic wireless transceiver chip of this antenna, connects the PIC single chip microcomputer of this monolithic wireless transceiver chip, connects the single supply level transferring chip of this PIC single chip microcomputer and the port being connected this single supply level transferring chip; The port being located at man-machine interface sending/receiving power model is connected with man-machine interface; The port being located at PLC sending/receiving power model is connected with PLC.PIC single chip microcomputer (PeripheralInterfaceController) in the present invention, be that a kind of being used for develops the integrated circuit (IC) controlling ancillary equipment, one has the CPU of peptizaiton (multitask) function.
Further, monolithic wireless transceiver chip is NRF24L01 chip.NRF24L01 chip is the monolithic wireless transceiver chip being operated in the ISM band of 2.4GHz ~ 2.5GHz of being produced by NORDIC.
Further, PIC single chip microcomputer is PIC16F877A chip.
Further, single supply level transferring chip is MAX232 chip.MAX232 chip is the single supply level transferring chip that U.S. letter (MAXIM) company aims at the design of rs-232 standard serial ports, uses+5v single power supply.
The invention also discloses wireless communications method, utilize described wireless receiving reflector, realize the radio communication between man-machine interface and PLC, the method is as follows:
A, man-machine interface transmitted data signal; In man-machine interface sending/receiving power model, man-machine interface sends to single supply level transferring chip by port data, single supply level transferring chip this transfer of data in PIC single chip microcomputer, PIC single chip microcomputer with SPI communication pattern transfer of data in monolithic wireless transceiver chip, monolithic wireless transceiver chip has less radio-frequency send mode in passing through, and data are sent in the air;
B, PLC receive data-signal; Send/receive in power model at PLC, monolithic wireless transceiver chip receives from the data the step a sent in the air, carry out address to judge and CRC (cyclic redundancy check (CRC) code, CyclicRedundancyCheck) preserve data after verification correctly, send to PIC single chip microcomputer the signal receiving data simultaneously; After the PLC PIC single chip microcomputer that send/receive in power model receives the signal receiving data, adopt the data of SPI communication pattern reading and saving in monolithic wireless transceiver chip; PIC single chip microcomputer is the data read afterwards, is sent in PLC by single supply level transferring chip and port;
C, PLC reply data-signal; PLC receives the laggard row relax of data in step b, and then reply data to PIC single chip microcomputer by single supply level transferring chip, the flow process of replying data is contrary with the flow process receiving data in step a and step b; Circulation realizes the wireless data exchange of man-machine interface sending/receiving power model and PLC sending/receiving power model so back and forth, thus realizes the communication between man-machine interface and PLC.
Compared with prior art, beneficial effect of the present invention:
1, the present invention adopts above-mentioned a kind of wireless communications method, realizes Wireless data transmission between man-machine interface and PLC, realizes the flexible operating without fixed position;
2, the present invention uses PIC16F877A chip 7 and MAX232 chip 8 to realize changing transmission of wireless signals into from wire signal transfer of data, and structure is simple;
3, the present invention makes the operation of operator to man-machine interface more flexible, debugging for equipment greatly facilitates especially, pick up man-machine interface and want that optional position operates in signal transmission ranges, man-machine interface is without the need to being fixedly mounted on board, the probability that the man-machine interface greatly reduced is collided, also can reduce artificial misoperation; Can take out when needing, man-machine interface can be deposited time unwanted.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the connection diagram of the embodiment one of wireless receiving reflector in the present invention,
Fig. 2 is the structural representation of man-machine interface sending/receiving power model in Fig. 1;
In figure, 1-man-machine interface; 2-man-machine interface sending/receiving power model; 3-PLC; 4-PLC send/receive power model; 5-antenna; 6-NRF24L01 chip; 7-PIC16F877A chip; 8-MAX232 chip; 9-port.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.
Wireless receiving reflector, comprise the man-machine interface sending/receiving power model for man-machine interface communication, the PLC also comprised for programmable logic controller (PLC) plc communication send/receive power model, and man-machine interface sending/receiving power model be send/receive power model with PLC and is connected by wireless signal.
Embodiment one
Wireless receiving reflector as shown in Fig. 1 and Fig. 2 embodiment one, comprise the man-machine interface sending/receiving power model 2 communicated for man-machine interface 1, also comprise the PLC communicated for programmable logic controller (PLC) PLC3 and send/receive power model 4, man-machine interface sending/receiving power model 2 be send/receive power model 4 with PLC and is connected by wireless signal.
Man-machine interface sending/receiving power model 2 is identical with the structure that PLC send/receive power model 4; Man-machine interface sending/receiving power model 2 comprises antenna 5, connects the NRF24L01 chip 6 of this antenna 5, connects the PIC16F877A chip 7 of NRF24L01 chip 6, the MAX232 chip 8 connecting PIC16F877A chip 7 and the port 9 being connected MAX232 chip 8.The port 9 being located at man-machine interface sending/receiving power model 2 is connected with man-machine interface; The port being located at PLC sending/receiving power model 4 is connected with PLC3.
Other structure of wireless receiving reflector shown in embodiment one is see prior art.
Embodiment two
Embodiment two wireless communications method, utilize wireless receiving reflector shown in embodiment one, realize the radio communication between man-machine interface 1 and PLC3, the method is as follows:
A, man-machine interface 1 transmitted data signal; In man-machine interface sending/receiving power model, man-machine interface 1 sends to MAX232 chip 8 by port 9 data, MAX232 chip 8 this transfer of data in PIC16F877A chip 7, PIC16F877A chip 7 uses SPI communication pattern transfer of data in NRF24L01 chip 6, there is less radio-frequency send mode in NRF24L01 chip 6 passes through, data are sent in the air;
B, PLC3 receive data-signal; Send/receive in power model 4 at PLC, NRF24L01 chip 6 receives from the data the step a sent in the air, carry out address judge and cyclic redundancy check (CRC) code CRC check correctly preserve data afterwards, while send to PIC16F877A chip 7 signal receiving data; After the PLC PIC16F877A chip 7 that send/receive in power model 4 receives the signal receiving data, adopt the data of SPI communication pattern reading and saving in NRF24L01 chip 6; PIC16F877A chip 7 is the data read afterwards, is sent in PLC3 by MAX232 chip 8 and port 9;
C, PLC3 reply data-signal; PLC3 receives the laggard row relax of data in step b, then replys data to PIC16F877A chip 7 by MAX232 chip 8, and the flow process of replying data is contrary with the flow process receiving data in step a and step b; Circulation realizes the wireless data exchange of man-machine interface sending/receiving power model 2 and PLC sending/receiving power model 4 so back and forth, thus realizes the communication between man-machine interface 1 and PLC3.
The present invention adopts above-mentioned a kind of wireless communications method, realizes man-machine interface 1 and PLC3 Wireless data transmission, realizes the flexible operating without fixed position; The present invention uses PIC16F877A chip 7 and MAX232 chip 8 to realize changing transmission of wireless signals into from wire signal transfer of data, and structure is simple.
The present invention is not limited to above-mentioned execution mode, if do not depart from the spirit and scope of the present invention to various change of the present invention or modification, if these are changed and modification belongs within claim of the present invention and equivalent technologies scope, then the present invention is also intended to comprise these change and modification.
Claims (1)
1. a wireless communications method, is characterized in that, utilizes wireless receiving reflector, realizes the radio communication between man-machine interface and PLC; Wireless receiving reflector, comprise the man-machine interface sending/receiving power model for man-machine interface communication, the PLC also comprised for programmable logic controller (PLC) plc communication send/receive power model, and man-machine interface sending/receiving power model be send/receive power model with PLC and is connected by wireless signal; Man-machine interface sending/receiving power model is identical with the structure that PLC send/receive power model; Man-machine interface sending/receiving power model comprises antenna, connects the monolithic wireless transceiver chip of this antenna, connects the PIC single chip microcomputer of this monolithic wireless transceiver chip, connects the single supply level transferring chip of this PIC single chip microcomputer and the port being connected this single supply level transferring chip; The port being located at man-machine interface sending/receiving power model is connected with man-machine interface; The port being located at PLC sending/receiving power model is connected with PLC; Monolithic wireless transceiver chip is NRF24L01 chip; PIC single chip microcomputer is PIC16F877A chip; Single supply level transferring chip is MAX232 chip;
The method is as follows:
A, man-machine interface transmitted data signal; In man-machine interface sending/receiving power model, man-machine interface sends to single supply level transferring chip by port data, single supply level transferring chip this transfer of data in PIC single chip microcomputer, PIC single chip microcomputer with SPI communication pattern transfer of data in monolithic wireless transceiver chip, monolithic wireless transceiver chip has less radio-frequency send mode in passing through, and data are sent in the air;
B, PLC receive data-signal; Send/receive in power model at PLC, monolithic wireless transceiver chip receives from the data the step a sent in the air, carry out address judge and cyclic redundancy check (CRC) code CRC check correctly preserve data afterwards, while send to PIC single chip microcomputer the signal receiving data; After the PLC PIC single chip microcomputer that send/receive in power model receives the signal receiving data, adopt the data of SPI communication pattern reading and saving in monolithic wireless transceiver chip; PIC single chip microcomputer is the data read afterwards, is sent in PLC by single supply level transferring chip and port;
C, PLC reply data-signal; PLC receives the laggard row relax of data in step b, and then reply data to PIC single chip microcomputer by single supply level transferring chip, the flow process of replying data is contrary with the flow process receiving data in step a and step b; Circulation realizes the wireless data exchange of man-machine interface sending/receiving power model and PLC sending/receiving power model so back and forth, thus realizes the communication between man-machine interface and PLC.
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| CN103107824B (en) * | 2013-01-15 | 2015-12-09 | 深圳市岑科实业有限公司 | Wireless receiving reflector and wireless communications method |
| CN111158810B (en) * | 2019-12-16 | 2023-05-02 | 深圳市显控科技股份有限公司 | HMI human-machine interface data communication method and HMI human-machine interface device |
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Address after: 518000 room 1101-1105, building 6, Hengda fashion Huigu building (East District), Fulong Road, Henglang community, Dalang street, Longhua District, Shenzhen, Guangdong Patentee after: Cenke Technology (Shenzhen) Group Co.,Ltd. Address before: 518109 Second Floor (Office) and Third Floor (Production) of Building C, Jinbolong Industrial Park, Qingquan Road, Longhua Street, Baoan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN CENKER ENTERPRISE Ltd. |