CN101943908B - Wireless Andon system - Google Patents
Wireless Andon system Download PDFInfo
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- CN101943908B CN101943908B CN2010102903353A CN201010290335A CN101943908B CN 101943908 B CN101943908 B CN 101943908B CN 2010102903353 A CN2010102903353 A CN 2010102903353A CN 201010290335 A CN201010290335 A CN 201010290335A CN 101943908 B CN101943908 B CN 101943908B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention discloses a wireless Andon system, which comprises a plurality of information acquisition nodes, a coordinator node and a host, wherein the plurality of information acquisition nodes are respectively positioned at corresponding key positions in a production line so as to acquire the production line information at the corresponding key positions and transmit the production line information; the coordinator node is wirelessly connected with the information acquisition nodes and is used for establishing and managing a wireless network, receiving the production line information transmitted by the information acquisition nodes and forwarding the production line information; and the host is connected with the coordinator node and is used for receiving the production line information forwarded by the coordinator node, analyzing the production line information, and broadcasting, printing or displaying an analysis result so as to guide workers to work. The system can collect the production line information timely to guide the workers for material distribution and other work. The wireless connection exists inside the system without wiring, so the deployment and maintenance cost can be reduced, and the information acquisition nodes can move. In addition, the system can be provided with a plurality of routing nodes so as to extend the wireless network transmission distance and increase wireless network node number.
Description
Technical field
The present invention relates to a kind of Andon (peace lamp) system, relate in particular to a kind of wireless Andon system.
Background technology
Andon system (peace lamp system) is a kind of visual management tool; can collect Production Line state and abnormal conditions visual signal; as machine down, quality problems, frock fault, operator's delay occurs and be short in needed material etc.; remind the workman in time to take corresponding measure with these visual signals, control is produced and is independently carried out.Therefore, by the Andon system, enterprise can accomplish that associated production information visualization, information are transmitted high-speeding, closed loopization is controlled in management, thereby enhances productivity, and reduces production costs.
Along with the competitive pressure of enterprise is increasing, along with the demand that people stop the line time to enhancing productivity, reduce production costs, reducing is more and more urgent, the Andon system is widely used in many industries gradually, especially on the production lines such as the general assembly of automobile industry, application, welding, punching press, with help workman on the production line in certain productive temp, finish reliable quality product fittage.
In meeting article " the visual management system in ANDON (finding a place for) workshop ", introduced a kind of Andon system, this system adopts the mixing three-layer architecture of integrated on-the-spot industrial bus, control bus and industry ethernet, realize the production line information acquisition, the production line message reflection production line situation of gathering, thus instruct the workman to work.The Andon system of this realization production line information acquisition needs on-the-spot industrial bus, control bus and industry ethernet, so cost is higher, and factory's wiring is difficulty comparatively, and maintenance work is corresponding also relatively more difficult.
Therefore, be necessary to provide a kind of improved Andon system to overcome the defective of prior art.
Summary of the invention
The purpose of this invention is to provide a kind of wireless Andon system, not only can in time reflect the production line situation by wireless network, as production status, feed states, quality condition and status of equipment, and then instruct the workman to carry out work such as material allocation, plant maintenance, can reduce and stop the line time, enhance productivity, and need not on-the-spot industrial bus, control bus and industry ethernet, can reduce deployment and the maintenance cost of Andon.。
To achieve these goals, the invention provides a kind of wireless Andon system, comprising:
A plurality of information acquisition nodes lay respectively on the corresponding key position of production line, gathering the production line information of corresponding key position, and send described production line information;
Coordinator node with the wireless connections of described information acquisition node, is used to develop and manage wireless network, receives the production line information that described information acquisition node sends by the wireless network of setting up, and transmits described production line information;
Main frame is connected with described coordinator node, is used to receive the production line information that described coordinator node is transmitted, and described production line information is analyzed, and analysis result is broadcasted, printed or shows, works with the guiding work personnel.
In one embodiment of the invention, described main frame is connected with described coordinator node by serial ports or USB interface.
In another embodiment of the present invention, described information acquisition node is gathered production line information by sensor or keyboard.
In an embodiment more of the present invention, described coordinator node comprises:
The ZigBee cordless communication network is set up the unit, is used to set up the ZigBee cordless communication network;
Network adds judging unit, setting up the unit with described information acquisition node and ZigBee cordless communication network is connected, be used for setting up joining request of the ZigBee cordless communication network set up the unit, judge whether to allow described information acquisition node to add described ZigBee cordless communication network according to the described ZigBee cordless communication network of adding that described information acquisition node sends;
The production line information receiving unit, adding judging unit, described information acquisition node and main frame with described network is connected, be used for after described network adding judging unit allows described information acquisition node to add described ZigBee cordless communication network, receive the production line information that described information acquisition node sends by described ZigBee cordless communication network, again with described production line information transmission to main frame;
Feedback information is replied the unit, is connected with described main frame and described information acquisition node, be used for after described main frame receives described production line information and finishes, by described ZigBee cordless communication network to described information acquisition node answer feedback information.
In another embodiment of the present invention, described system also comprises:
A plurality of routing nodes, be used for sending to described coordinator node respectively adding joining request of described ZigBee cordless communication network, after treating that coordinator node allows to add described ZigBee cordless communication network, receive joining request of the described ZigBee cordless communication network of adding that other information acquisition nodes send, according to joining request of sending of described other information acquisition nodes described other information acquisition nodes are added described ZigBee cordless communication network, transmit the production line information of described other information acquisition node collections or transmit extremely described other information acquisition nodes of feedback information that described coordinator node replys to described coordinator node.
In an embodiment more of the present invention, described main frame comprises information management system, described information management system is connected with described coordinator node, be used to receive the production line information that described coordinator node is transmitted, analyze described production line information, and with analysis result be sent to the broadcasting that is connected with described information management system, host display or with printer that described information management system is connected on.
Compared with prior art, the present invention is wireless, and production line information can be collected by the Andon system, comprise production status, feed states, quality condition and status of equipment etc., these production line information can instruct the workman to carry out work such as material allocation exactly, running is produced in pulling, stop the line time thereby reduce, enhance productivity, for enterprise reduces production costs.
In addition, for enterprise reduces cost, Andon system that the present invention is wireless adopts wireless technology, can reduce the cost of each electronic board node; Without factory's wiring, reduced the cost of disposing and safeguarding; Expansion easily, upgrading is simple.
In addition, the main frame of Andon system that the present invention is wireless and coordinator node are passed through serial ports or USB interface physical connection, the little and wireless connections each other of coordinator node and information acquisition node volume, and conveniently moving is disposed easily.During deployment, place the information acquisition node at the corresponding key position of production line earlier, make information acquisition node access network in suitable place placement main frame and coordinator node.
At last, native system can be introduced routing node, with extended wireless Network Transmission distance and wireless network node quantity.
By following description also in conjunction with the accompanying drawings, it is more clear that the present invention will become, and these accompanying drawings are used to explain embodiments of the invention.
Description of drawings
Fig. 1 is the composition synoptic diagram of the wireless Andon of a present invention embodiment of system.
Fig. 1 a is the composition synoptic diagram of the information acquisition node in the wireless Andon shown in Figure 1 system.
Fig. 1 b is the composition synoptic diagram of the coordinator node in the wireless Andon shown in Figure 1 system.
Fig. 2 is the composition synoptic diagram of wireless Andon another embodiment of system of the present invention.
Fig. 2 a is the composition synoptic diagram of the routing node of wireless Andon shown in Figure 2 system
Embodiment
With reference now to accompanying drawing, describe embodiments of the invention, the similar elements label is represented similar elements in the accompanying drawing.
Fig. 1 is the synoptic diagram of an embodiment of the wireless Andon of the present invention system.As shown in Figure 1, described wireless Andon system comprises a plurality of information acquisition node 110, a coordinator node 120 and a main frame 130.
The easy appearance that described a plurality of information acquisition node 110 lays respectively at production line lack material or key position such as break down easily on, to gather the production line information of corresponding key position, and send described production line information, as production status, feed states, quality condition and status of equipment, these information can reflect whether operating production line insufficient raw material, equipment failure etc. occur and cause production line not run well, even stop the problem of line.
Described coordinator node 120 with described information acquisition node 110 wireless connections, is used to set up wireless network, receives the production line information that described information acquisition node 110 sends by the wireless network of setting up, and transmits described production line information.
Described main frame 130 is connected with described coordinator node 120 by serial ports or USB interface, be used for receiving the production line information that described coordinator node 120 is transmitted by described serial ports or described USB interface, described production line information is analyzed, and analysis result broadcasted, prints or show, work with the guiding work personnel.
The following describes the process of wireless Andon system acquisition production line information shown in Figure 1, step is:
Step S101, coordinator node 120 is set up wireless network;
Step S102, the production line information that each information acquisition node 110 is gathered on the production line key position, and send described production line information;
Step S103, coordinator node 120 receives the production line information that described information acquisition node 110 sends by the wireless network of setting up, and transmits described production line information;
Step S104, described main frame 130 receives the production line information that described coordinator node 120 is transmitted by serial ports or USB interface, described production line information is analyzed, and analysis result is broadcasted, printed or shows, works with the guiding work personnel.
As from the foregoing, the present invention is wireless, and production line information can be collected by the Andon system, comprise production status, feed states, quality condition and status of equipment etc., these production line information can instruct the workman to carry out work such as material allocation exactly, running is produced in pulling, stop the line time thereby reduce, enhance productivity, for enterprise reduces production costs.
In addition, for enterprise reduces cost, Andon system that the present invention is wireless adopts wireless technology, can reduce the cost of each electronic board node; Without factory's wiring, reduced the cost of disposing and safeguarding; Expansion easily, upgrading is simple.
In addition, the main frame 130 of Andon system that the present invention is wireless passes through serial ports or USB interface physical connection with coordinator node 120, the little and wireless connections each other of coordinator node 120 and information acquisition node 110 volumes, and conveniently moving is disposed easily.During deployment, place information acquisition node 110 at the corresponding key position of production line earlier, place main frame 130 and coordinator node 120, make information acquisition node 110 access networks in suitable place.
In native system, described main frame 130 comprises information management system, described information management system receives the production line information that described coordinator node 120 sends, analyze described production line status information, and with analysis result be sent to the broadcasting that is connected with described information management system, host display or with printer that described information management system is connected on, so as to broadcast described analysis result, by described host display display analysis result or by the printer prints analysis result, thereby guiding work personnel work.In the present invention, described main frame 130 can be a PC.
As Fig. 1 a, described information acquisition node 110 comprises sensor 111, keyboard 112, SOC wireless chip 113, status lamp 114, radio circuit 115, antenna 116, power supply 117.SOC wireless chip 113 is connected with sensor 111 and keyboard 112, status lamp 114 is connected with SOC wireless chip 113, radio circuit 115 is connected with SOC wireless chip 113, antenna 116 and radio circuit 115, power supply 117 is connected with sensor 111, keyboard 112, SOC wireless chip 113, status lamp 114, radio circuit 115, antenna 116.
The easy appearance that sensor 111 is positioned at production line lack material or key position such as break down easily on, be used for detecting automatically production line information, keyboard 112 is used for manually importing production line information.Power supply 117 is the whole node power supply.Whole information acquisition node 110 operate as normal of SOC wireless chip 113 controls.Wireless radio frequency circuit 115 and antenna 116 transmitting/receiving wireless signals.The network state and the duty of status lamp 114 display message acquisition nodes 110.
As Fig. 1 b, described coordinator node 120 comprises antenna 121, radio circuit 122, SOC wireless chip 123, host computer communication interface (serial ports and/or USB interface) 124, status lamp 125, power supply 126.Antenna 116 wireless connections of antenna 121 and described information acquisition node 110, radio circuit 122 is connected with antenna 121, SOC wireless chip 123 is connected with radio circuit 122, host computer communication interface 124 is connected with SOC wireless chip 123, status lamp 125 is connected with SOC wireless chip 123, and power supply 126 is connected with antenna 121, radio circuit 122, SOC wireless chip 123, host computer communication interface 124, status lamp 125.Need to prove that antenna 121, radio circuit 122, SOC wireless chip 123, host computer communication interface 124, status lamp 125, power supply 126 are integrated on the circuit board.
Wherein, whole coordinator node 120 operate as normal of SOC wireless chip 123 controls, wireless radio frequency circuit 122 and antenna 121 transmitting/receiving wireless signals, host computer communication interface 124 is used for communicating by letter with main frame 130, status lamp 125 shows the network state and the duty of coordinator node 120, and power supply 126 is whole coordinator node 120 power supplies.
In addition, described coordinator node 120 comprises:
The ZigBee cordless communication network is set up the unit, is used to set up the ZigBee cordless communication network, and at the back initialization ZigBee cordless communication network that powers on;
Network adds judging unit, setting up the unit with described information acquisition node 110 and ZigBee cordless communication network is connected, be used for setting up joining request of the ZigBee cordless communication network set up the unit, judge whether to allow described information acquisition node 110 to add described ZigBee cordless communication network according to the described ZigBee cordless communication network of adding that described information acquisition node 110 sends;
The production line information receiving unit, adding judging unit, described information acquisition node 110 and main frame 130 with described network is connected, be used for after described network adding judging unit allows described information acquisition node 110 to add described ZigBee cordless communication network, receive the production line information that described information acquisition node 110 sends by described ZigBee cordless communication network, again with described production line information transmission to main frame 130;
Feedback information is replied the unit, be connected with described main frame 130 and described information acquisition node 110, be used for after the described production line information of described main frame 130 receptions finishes, replying feedback informations to described information acquisition node 110 by described ZigBee cordless communication network.
Need to prove that described information acquisition node 110 sends to described coordinator node 120 that to join request be to power on, channel scanning is sought the coordinator node of coupling, and finds coordinator node 120 backs of coupling to realize.
Fig. 2 is the synoptic diagram of another embodiment of the wireless Andon of the present invention system.As shown in Figure 2, described wireless Andon system comprise a plurality of information acquisition nodes 110 ', 110 ", a plurality of routing node 140, a coordinator node 120 ' and a main frame 130.
Described a plurality of information acquisition node 110 ', 110 " function with described information acquisition node 110 of Fig. 1 and main frame 130 is identical respectively with main frame 130.
Described a plurality of routing node 140 respectively with described coordinator node 120 ' and a part of information acquisition node 110 " wireless connections; be used for adding joining request of described ZigBee cordless communication network; " joining request of the described ZigBee cordless communication network of adding that sends behind the described ZigBee cordless communication network to be added; receive described a part of information acquisition node 110 to described coordinator node 120 ' transmission, add described ZigBee cordless communication network according to described a part of information acquisition node 110 " send join request ", to the described a part of information acquisition node 110 of described coordinator node 120 ' forwardings " the production line information of collection or the feedback information of transmitting described coordinator node 120 ' return are to information acquisition node 110 " with described a part of information acquisition node 110.
Described coordinator node 120 ' with described routing node 140,110 ' the wireless connections of another part information acquisition node, and by being connected with main frame 130 by serial ports or USB interface, be used to set up the ZigBee cordless communication network, judge whether to allow described routing node 140 or described another part information acquisition node 110 ' described ZigBee cordless communication network of adding according to joining request of described routing node 140 or described another part information acquisition node 110 ' transmission, when allowing the described ZigBee cordless communication network of described routing node 140 or described another part information acquisition node 110 ' adding, receive the production line information of described another information acquisition node 110 ' transmission or receive the production line information that described routing node 140 is transmitted, after treating that the described production line information of main frame 130 receptions finishes, to described another part information acquisition node 110 ' answer feedback information, or " reply feedback information to described a part of information acquisition node 110 by described ZigBee cordless communication network via described routing node 140.
The following describes the process of wireless Andon system acquisition production line information shown in Figure 2.
Step S201, coordinator node 120 ' set up ZigBee cordless communication network;
Step S202, information acquisition node 110 ' and routing node 140 joining request to described coordinator node 120 ' transmission described ZigBee cordless communication network of adding;
Step S203, coordinator node 120 ' judge whether to allow information acquisition node 110 ' adding according to joining request of information acquisition node 110 ' transmission, coordinator node 120 ' permission information acquisition node 110 ' add fashionable, production line information on the corresponding key position of information acquisition node 110 ' collection production line, the production line information of coordinator node 120 ' by ZigBee cordless communication network wireless information reception acquisition node 110 ' transmission, and transmit production line information to main frame 130 by serial ports or USB interface, after main frame 130 reception production line information finish, on the one hand coordinator node 120 ' by described ZigBee cordless communication network is to information acquisition node 110 ' answer feedback information, main frame is analyzed production line information on the other hand, and analysis result broadcasted, print or demonstration, work with the guiding work personnel;
Step S204, coordinator node 120 ' judge whether to allow routing node 140 to add according to joining request of routing node 140 transmissions, coordinator node 120 ' permission routing node 140 adds fashionable, information acquisition node 110 " sends joining request of the described ZigBee cordless communication network of adding to routing node 140; " add fashionable when routing node 140 allows information acquisition nodes 110, information acquisition node 110 " is gathered the production line information on the corresponding key position of production line; " the production line information that sends that routing node 140 is by ZigBee cordless communication network wireless information reception acquisition node 110, the production line information of coordinator node 120 ' transmit by ZigBee cordless communication network wireless receiving routing node 140, and transmit production line information to main frame 130 by serial ports or USB interface, after main frame 130 reception production line information finish, one side coordinator node 120 ' reply feedback informations to routing node 140 by described ZigBee cordless communication network, routing node 140 is to information acquisition node 110, and " forwarding feedback information; main frame is analyzed production line information on the other hand; and analysis result broadcasted; print or show is worked with the guiding work personnel.
Need to prove that it is to power on that described routing node 140 joins request to described coordinator node 120 ' transmission, channel scanning is sought the coordinator node of coupling, and finds and realize after the coordinator node of coupling.
As seen from the above, wireless Andon system than Fig. 1, the wireless Andon system of Fig. 2 has increased routing node 140, routing node 140 has wireless routing function, be used for the information transfer, can connect the more information acquisition node by routing node 140, can extended wireless Network Transmission distance and wireless network node quantity.
In addition, wireless connections mutually between a plurality of routing nodes 140, and " connect, and at least one routing node 140 is connected with described coordinator node 120 ', thereby further expands the wireless network transmissions distance with corresponding information acquisition node 110 separately.
In the present embodiment, coordinator node 120 ', routing node 140 and information acquisition node 110 ', 110 " the little and wireless connections each other of volume, conveniently moving is disposed easily and is adjusted.During deployment, earlier the corresponding key position on production line place information acquisition node 110 ', 110 "; place main frame 130 and coordinator node 120 ' in suitable place, progressively place again and adjust routing node 140 make above-mentioned information acquisition node 110 ', 110 " access networks; If need adjustment information acquisition node 110 ', 110 ", when coordinator node 120 ' and main frame 130 positions; can needn't consider earlier that networking needs and directly with information acquisition node 110 ', 110 ", coordinator node 120 ' and main frame 130 place and need the position, the position of adjusting routing node 140 again make information acquisition node 110 ', 110 " access network; If need to increase information acquisition node 110 ', 110 ", extended network not considering earlier that networking needs and carries out deployed with devices then equally, again the position by adjusting routing node 140 with information acquisition node 110 ', 110 " access networks.
As Fig. 2 a, described routing node 140 comprises antenna 141, radio circuit 142, SOC wireless chip 143, status lamp 144, power supply 145.Antenna 141 is connected with the antenna 116 of described information acquisition node 110 and the antenna 121 of coordinator node 120, radio circuit 142 is connected with antenna 141, SOC wireless chip 143, be connected with radio circuit 142, status lamp 144 is connected with SOC wireless chip 143, power supply 145 is connected with antenna 141, radio circuit 142, SOC wireless chip 143, status lamp 144.
Wherein, whole routing node 140 operate as normal of SOC wireless chip 143 controls, wireless radio frequency circuit 142 and antenna 141 transmitting/receiving wireless signals, status lamp 144 shows the network state and the duty of routing node 140, power supply 145 is whole routing node 140 power supplies.
Above invention has been described in conjunction with most preferred embodiment, but the present invention is not limited to the embodiment of above announcement, and should contain various modification, equivalent combinations of carrying out according to essence of the present invention.
Claims (2)
1. wireless Andon system comprises:
A plurality of information acquisition nodes, lay respectively on the key position that occurs scarce material or fault easily of production line, gathering the production line information of key position, and send described production line information, described production line information comprises the whether information of fault of information that raw material is whether sufficient and equipment;
Coordinator node with the wireless connections of described information acquisition node, is used to develop and manage wireless network, receives the production line information that described information acquisition node sends by the wireless network of setting up, and transmits described production line information;
Main frame is connected with described coordinator node, is used to receive the production line information that described coordinator node is transmitted, and described production line information is analyzed, and analysis result is broadcasted, printed or shows, works with the guiding work personnel;
Described main frame is connected with described coordinator node by serial ports or USB interface;
Described information acquisition node is gathered production line information by sensor or keyboard;
Described coordinator node comprises: the ZigBee cordless communication network is set up the unit, is used to set up the ZigBee cordless communication network; Network adds judging unit, setting up the unit with described information acquisition node and ZigBee cordless communication network is connected, be used for setting up joining request of the ZigBee cordless communication network set up the unit, judge whether to allow described information acquisition node to add described ZigBee cordless communication network according to the described ZigBee cordless communication network of adding that described information acquisition node sends; The production line information receiving unit, adding judging unit, described information acquisition node and main frame with described network is connected, be used for after described network adding judging unit allows described information acquisition node to add described ZigBee cordless communication network, receive the production line information that described information acquisition node sends by described ZigBee cordless communication network, again with described production line information transmission to main frame; Feedback information is replied the unit, is connected with described main frame and described information acquisition node, be used for after described main frame receives described production line information and finishes, by described ZigBee cordless communication network to described information acquisition node answer feedback information;
Described main frame comprises information management system, described information management system is connected with described coordinator node, be used to receive the production line information that described coordinator node is transmitted, analyze described production line information, and with analysis result be sent to the broadcasting that is connected with described information management system, host display or with printer that described information management system is connected on.
2. wireless Andon as claimed in claim 1 system is characterized in that, also comprises:
A plurality of routing nodes, be used for sending to described coordinator node respectively adding joining request of described ZigBee cordless communication network, after treating that coordinator node allows to add described ZigBee cordless communication network, receive joining request of the described ZigBee cordless communication network of adding that other information acquisition nodes send, according to joining request of sending of described other information acquisition nodes described other information acquisition nodes are added described ZigBee cordless communication network, transmit the production line information of described other information acquisition node collections or transmit extremely described other information acquisition nodes of feedback information that described coordinator node replys to described coordinator node.
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| CN2010102903353A CN101943908B (en) | 2010-09-25 | 2010-09-25 | Wireless Andon system |
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| CN2010102903353A CN101943908B (en) | 2010-09-25 | 2010-09-25 | Wireless Andon system |
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| CN101943908A CN101943908A (en) | 2011-01-12 |
| CN101943908B true CN101943908B (en) | 2011-11-16 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102799147A (en) * | 2011-05-27 | 2012-11-28 | 上海富朗德机械设备有限公司 | Body shop conveyor line monitoring and management system |
| CN102681504A (en) * | 2012-04-18 | 2012-09-19 | 华中科技大学 | Industrial data collection and feedback system |
| CN102708442A (en) * | 2012-04-18 | 2012-10-03 | 华中科技大学 | Intelligent material matching controlling system and applications thereof |
| CN103376781A (en) * | 2012-04-20 | 2013-10-30 | 华清科盛(北京)信息技术有限公司 | Production resource pushing system based on wireless intelligent network |
| CN102694659A (en) * | 2012-05-28 | 2012-09-26 | 华中科技大学 | System capable of realizing wireless passthrough of Ad Hoc network USB port data |
| CN106200581B (en) * | 2016-07-19 | 2018-12-11 | 清华大学 | Lean intelligence Andon engine |
| CN106851785B (en) * | 2017-03-15 | 2019-12-24 | 福州东日信息技术有限公司 | Wireless communication method and system |
| CN108107851A (en) * | 2017-11-17 | 2018-06-01 | 青岛杰瑞工控技术有限公司 | A kind of production line intelligent remote pacifies lamp control system |
| CN109040273A (en) * | 2018-08-16 | 2018-12-18 | 上海思功信息技术有限公司 | A kind of peace lamp system and its control method |
| CN111240286B (en) * | 2020-01-19 | 2021-02-26 | 珠海格力电器股份有限公司 | System and method for reducing misjudgment of line stop reason |
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| US7006792B2 (en) * | 2002-09-26 | 2006-02-28 | Robert H Wilson | Wireless andon communication method and system |
| JP2007094924A (en) * | 2005-09-30 | 2007-04-12 | Toyota Motor Corp | System for analyzing operational status of production line |
| JP2007233964A (en) * | 2006-03-03 | 2007-09-13 | Denso Corp | Operation time display apparatus and production management system |
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