CN101780786A - Automobile anti-theft device with ZIGBEE network communication module - Google Patents
Automobile anti-theft device with ZIGBEE network communication module Download PDFInfo
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- CN101780786A CN101780786A CN200910105077A CN200910105077A CN101780786A CN 101780786 A CN101780786 A CN 101780786A CN 200910105077 A CN200910105077 A CN 200910105077A CN 200910105077 A CN200910105077 A CN 200910105077A CN 101780786 A CN101780786 A CN 101780786A
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Abstract
The invention relates to an automobile anti-theft device (10) with a ZIGBEE network communication module, comprising a burglar alarm host computer (11), a ZIGBEE network communication module (13), a two-way radio frequency module (15) and a radio frequency antenna (16) arranged in the burglar alarm host computer (11); wherein the burglar alarm host computer (11) communicates with the ZIGBEE network communication module (13) by the two-way radio frequency module (15).With the automobile anti-theft device (10), normally communication is carried out with the information service center through a GSM or CDMA wireless communication network; and when GSM OR CDMA wireless signals with a frequency band ranging from 800MHZ to 2GHZ are shielded, the ZIGNEE network communication module can be employed to transmit automobile monitoring information to the information service center, so as to monitor the automobiles.
Description
Technical field
The present invention relates to a kind of anti-joyride device, more particularly, relate to a kind of alarms and security systems for automobiles with the ZIGBEE network communication module.
Background technology
Along with development of Chinese economy, the quantity of automobile is increased sharply year after year, and particularly the number of users of private car increases year after year, has the expert to estimate, China will become world-class automobile superpower very soon.But private car fast development at home also allows increasing offender that eye has been placed in the criminal activity of " stealing car ".Domestic manufacturer has also released one after another at the safety-protection system of automobile.
Domestic car alarm reaches its maturity at present, normally by GSM or cdma communication module, GPS locating module and car alarm several sections are formed, groundwork is the state of car alarm monitoring vehicle, in case generation unusual condition, at once abnormal information (alert) and GPS locating information are sent to servicing center by gsm module, by such means, really can effectively stop the generation of " stealing car " case, the case of much recovering stolen vehicle was also arranged, but, this series products popularizes along with being installed, the offender begins to grasp the groundwork of this class Car Burglar Alarm, uses some advanced means to crack this class safety-protection system.Allow most at present the means of this type systematic headache be exactly the offender with the equipment of a kind of being called " frescan ", just come into effect the car activity of stealing after a few minutes near vehicle.This equipment was what to be used at the mobile phone of some specific occasions " shielding " diverse network and Personal Handyphone System signal originally, such as preventing to practise fraud being used in the examination hall with mobile phone, this type shielding device on the market disturbs the radiofrequency signal of 800MHZ～2GHZ at present, and at present domestic GSM, CDMA and Personal Handyphone System are all in this frequency limit.So, be easy to carry out criminal activity from acquisition equipment on the market as long as the offender holds such cover, he just has time enough and removes the Car Burglar Alarm of dismantling, and Car Burglar Alarm has no idea alert is sent to servicing center simultaneously.So, how to solve the center that in other way alert reported under the situation that runs into the mobile phone signal conductively-closed and become the problem that each GPS Car Burglar Alarm manufacturer has a headache very much.
Above-mentioned prior art anti-joyride device has the following disadvantages: its wireless module is operated in 800MHZ～2GHZ frequency range, the easy conductively-closed of signal, thus can't communicate with information service center.
Summary of the invention
The technical problem to be solved in the present invention is to avoiding above-mentioned the deficiencies in the prior art part to propose a kind of alarms and security systems for automobiles with the ZIGBEE network communication module.
The present invention solve the technical problem can be by realizing by the following technical solutions: propose a kind of alarms and security systems for automobiles with the ZIGBEE network communication module, comprise the Car Burglar Alarm main frame that is provided with GSM/CDMA communication module and GPS locating module, especially, also comprise the ZIGBEE network communication module, be arranged on bi-directional RF module and radio-frequency antenna in the Car Burglar Alarm main frame, described GPS locating module is electrically connected with the bi-directional RF module, and can automobile monitoring information be sent to the ZIGBEE network communication module by this bi-directional RF module, realize intercoming mutually with the ZIGBEE network communication module, described ZIGBEE network communication module sends to information service center by the ZIGBEE transmission network with the automobile monitoring information that receives.
Described Car Burglar Alarm main frame comprises GSM/CDMA communication module and GPS locating module, and described GPS locating module is electrically connected with the GSM/CDMA communication module, and sends automobile monitoring information to information service center by GSM/CDMA transmission website.
Described automobile monitoring information comprises the user profile of GPS locating data, temporal information and automobile.
Described ZIGBEE network communication module is operated on the 2.4G frequency range.
Described bi-directional RF module is operated in the 125KHZ frequency range.
Described ZIGBEE transmission network is a net structure.
Described ZIGBEE transmission network comprises ZIGBEE network coordinator, ZIGBEE repeater and ZIGBEE final terminal, and described ZIGBEE network communication module is described ZIGBEE final terminal; Described ZIGBEE final terminal is by the ZIGBEE repeater or directly by the ZIGBEE network coordinator automobile monitoring information is sent to information service center.
Described ZIGBEE network coordinator comprises the GPS module, is used for vehicle location.
Compare with prior art, beneficial effect of the present invention is: when being operated in the wireless signal conductively-closed of 800MHZ～2GHZ frequency range, still can automobile monitoring information be sent to information service center, realize monitoring automobile by the ZIGBEE network communication module.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is a plant network structural representation of the present invention;
Fig. 2 is the diagram of circuit of device work embodiment one of the present invention;
Fig. 3 is the diagram of circuit of device work embodiment two of the present invention.
The specific embodiment
Be described in further detail below in conjunction with the preferential embodiment shown in each accompanying drawing.
A kind of alarms and security systems for automobiles 10 of the present invention with the ZIGBEE network communication module, as shown in Figure 1, comprise the Car Burglar Alarm main frame 11 that is provided with GSM/CDMA communication module 111 and GPS locating module 112, especially, also comprise ZIGBEE network communication module 13, be arranged on bi-directional RF module 15 and radio-frequency antenna 16 in the Car Burglar Alarm main frame 11, described GPS locating module 112 is electrically connected with bi-directional RF module 15, and can automobile monitoring information be sent to ZIGBEE network communication module 13 by this bi-directional RF module 15, realize intercoming mutually with ZIGBEE network communication module 13, described ZIGBEE network communication module 13 sends to information service center 12 by ZIGBEE transmission network 14 with the automobile monitoring information that receives.
Described Car Burglar Alarm main frame 11 comprises GSM/CDMA communication module 111 and GPS locating module 112, described GPS locating module 112 is electrically connected with GSM/CDMA communication module 111, and sends automobile monitoring information to information service center 12 by GSM/CDMA transmission network 17.
Described Car Burglar Alarm main frame 11 comprises GSM/CDMA communication module 111 and GPS locating module 112.
When described GSM/CDMA communication module 111 can't be communicated by letter by GSM/CDMA transmission network 17 and information service center 12 foundation, as shown in Figure 1, described Car Burglar Alarm main frame 11 sends to described ZIGBEE network communication module 13 with automobile monitoring information, ZIGBEE network communication module 13 receives and notes automobile monitoring information, and send it to information service center 12, thereby automobile is played supervisory function bit.
Described automobile monitoring information comprises the user profile of GPS locating data, temporal information and automobile.
Described ZIGBEE network communication module 13 is operated on the 2.4G frequency range.
Alert or GSM/CDMA communication module 111 disturbed can't foundation under the situation of communicating by letter with information service center 12 are being taken place, Car Burglar Alarm main frame 11 sends to ZIGBEE network communication module 13 by bi-directional RF module 15 with automobile monitoring information, ZIGBEE network communication module 13 is noted this information, when searching out ZIGBEE transmission network 14 by the time this automobile monitoring information is sent to information service center 12, the approximate location of finding vehicle of the information that information service center 12 can send over according to ZIGBEE network communication module 13 and the relevant information of vehicle.
Described bi-directional RF module 15 is operated in the 125KHZ frequency range.
Described ZIGBEE network communication module 13 sends to information service center 12 by ZIGBEE transmission network 14 with the automobile monitoring information that receives.
Described ZIGBEE transmission network 14 is a net structure.
Described ZIGBEE transmission network 14 comprises ZIGBEE network coordinator, ZIGBEE repeater and ZIGBEE final terminal, and described ZIGBEE network communication module is described ZIGBEE final terminal; Described ZIGBEE final terminal is by the ZIGBEE repeater or directly by the ZIGBEE network coordinator automobile monitoring information is sent to information service center 12.
Described ZIGBEE network coordinator comprises the GPS module, is used to locate the stolen vehicle position.
The wireless sensor network of a new generation will adopt 802.15.4 (ZIGBEE) agreement.ZIGBEE is a kind of low rate wireless connect technology that utmost point low complex degree, cost and the power consumption of cheap fixing, portable or mobile device use are provided, mainly be suitable for automatic guidance and remote control field, can embed in the various device, support geographic positioning functionality simultaneously.
Aspect normalisation, IEEE802.15.4 working group mainly is responsible to define the agreement of Physical layer and MAC layer, main reference of all the other agreements and the existing standard of employing, briefly, ZIGBEE is a kind of highly reliable wireless data sending network, be similar to CDMA and GSM network, the ZIGBEE digital transmission module is similar to the mobile network base station.Communication distance from 75 meters of standard to hundreds of rice, several kilometers, and support wireless extensions.Characteristics: low-power consumption, low data bulk, low cost is used free frequency range 2.4G, high disturbance rejection, high security, automatic dynamic networking.
The ZIGBEE standard is set up based on the 802.15.4 protocol stack, possessed powerful equipment networking function, it supports three kinds of main ad hoc deployed wireless networks types, it is hub-and-spoke configuration, net structure and bunch shape structure, because net structure has very strong network robustness and system reliability, the present invention adopts net structure to come framework ZIGBEE transmission network 14, and described ZIGBEE transmission network 14 comprises following three types equipment:
1, ZIGBEE network coordinator: comprising all internet messages, is the most complicated a kind of in three kinds of equipment, the storage content maximum, and computing power is the strongest.Send networked beacons, set up a network, managing network node, the storage networking nodal information is sought the route messages of a circuit node, constantly receives information.In present networks, this Centroid also needs to get in touch with the monitoring and control centre of GPS operator and the monitoring and control centre of parking area except bearing the data that receive and send in the whole ZIGBEEF transmission network.
2, the ZIGBEE repeater: this equipment is served as network coordination person, form network, allow other ZIGBEE repeater or ZIGBEE final terminal in the network connect, the ZIGBEE repeater possesses the function of controller, the information bidirectional transmission can be provided, this kind equipment distributes to be installed in and stops each interior position, because two node communication distances of ZIGBEE are no more than 100 meters, even some manufacturer can accomplish 2000 meters, whole ZIGBEE repeater is partly being born the ZIGBEE final terminal of perception car-mounted terminal and the existence of Centroid, and definite annexation, form structurized network.
3, ZIGBEE final terminal: when ZIGBEE network communication module 13 is installed on the automobile, promptly become a ZIGBEE final terminal.Do not need communication between the ZIGBEE final terminal on the automobile owing to be installed in, can adopt structure simple relatively, protocol stack is simplified, and final terminal with low cost helps controlling the cost of car-mounted terminal.
Adopt the ZIGBEE transmission network 14 of mesh network topologies structure, all entities are as long as within communication range, can mutual communication, if there is not direct path, can also communicate by letter by the mode of " multistage jumping "; This topological structure can also be formed very complicated network; In addition, ZIGBEE transmission network 14 also possesses self-organizing, self-healing function.
In concrete the enforcement, utilize these characteristics of ZIGBEE network, we are distributed in some main trunk roads in city with major joint, are serving as the role of the network coordinator of ZIGBEE; And be installed in the role that ZIGBEE node on the automobile is being born ZIGBEE relay and ZIGBEE final terminal.Stolen at vehicle, be installed in the interior ZIGBEE node of car when searching out ZIGBEE transmission network 14, it is serving as the role of ZIGBEE final terminal, the information of this car is sent to vehicle on every side, ZIGBEE contact (being the ZIGBEE repeater) by vehicle on every side sends to the ZIGBEE network coordinator again, sends to information service center 12 by the ZIGBEE network coordinator again.The center can be found from a nearest position that the automobile of this ZIGBEE final terminal has been installed of stolen vehicle then, so just can lock the approximate location of this car.
ZIGBEE transmission network spendable frequency range when communication has 3: the ISM band of 2.4GHz, the 868MHz frequency range in Europe and the 915MHz frequency range of the U.S., and the spendable channel of different frequency range is respectively 16,1 and 10, adopting the 2.4G frequency range in China, is the frequency of exempting to apply for and exempt from usage charges.So, though the shielding device that present quilt uses on the market can mask the network signal of GSM and CMDA, but can't mask the signal of ZIGBEE, so when alert takes place, as shown in Figure 1, described Car Burglar Alarm main frame 11 sends to described ZIGBEE network communication module 13 with automobile monitoring information, and ZIGBEE network communication module 13 receives and note automobile monitoring information, and send it to information service center 12, thereby automobile is played supervisory function bit.
On the other hand, in the city, need satisfy to install enough many of the automobile of alarms and security systems for automobiles 10 of the present invention, add ZIGBEE network coordinator on some main place cloth, because the ZIGBEE network communication module 13 in the alarms and security systems for automobiles 10 is serving as the role of ZIGBEE final terminal in the ZIGBEE transmission network 14, in case finding has alarm message, ZIGBEE network communication module 13 will send to the alarm message of receiving information service center 12.
The ZIGBEE network coordinator also has the GPS module, and so, stolen vehicle is as easy as rolling off a log in the process of moving to enter into the ZIGBEE network, in case be locked in crucial position, can take corresponding measure such as critical point interception stolen vehicle forwardly.
In the practical application, if stolen vehicle A by around the vehicle B of alarms and security systems for automobiles 10 of the present invention is housed the time, stolen vehicle A reports alert the major joint of ZIGBEE, it is the ZIGBEE network coordinator, by major joint this information is sent to information service center 12 again, tell the GPS location information of center from its proximal most position vehicle B simultaneously, the position of this vehicle just can roughly be locked in 100 meters scopes like this.
Simultaneously because can mutual communication between the ZIGBEE repeater, suppose not establish ZIGBEE major joint (being the ZIGBEE network coordinator) in certain location, can not form ZIGBEE transmission network 14, but can handle by software in ZIGBEE network communication module 13 application layers, the vehicle that ZIGBEE network communication module 13 is housed around allowing sends to this information in the Car Burglar Alarm main frame 11 of oneself, handle by the software of Car Burglar Alarm main frame 11 then, by original GPS network for this car alarming, the position of oneself is provided simultaneously, the center can receive that also this alert also can find the approximate location of this car simultaneously like this, appointment can also be assigned in the center simultaneously, and near the vehicle this stolen vehicle is transmitted to this car by ZIGBEE and cuts off automobile oil circuit and circuit again.
As shown in Figure 1, Car Burglar Alarm main frame 11 and ZIGBEE network communication module 13 adopts the RF communication of low-frequency ranges, without any connection lead, " search for by following the clues " along the car connection lead when preventing that the offender from destroying main frame.ZIGBEE network communication module 13 volumes are little, and the place of installation can be compared arbitrarily, so be difficult to find out onboard this equipment even the offender knows also.
When car door is illegally opened, perhaps trespassed by alternate manner, Car Burglar Alarm main frame 11 sends to ZIGBEE network communication module 13 by low frequency RF with information immediately, ZIGBEE network communication module 13 is noted this situation, begin to seek ZIGBEE transmission network 14, report alert by ZIGBEE transmission network 14.Car Burglar Alarm main frame 11 can use GSM or cdma network to report alert to monitoring and control centre simultaneously, this time, alert might not report fully, suppose in the blind area or the offender uses " cellular phone signal shielding device " that the mobile module of Car Burglar Alarm main frame 11 is searched less than network, this time, the Car Burglar Alarm main frame 11 may be destroyed by the offender. remove.Because the scope of this present type shielding device shielding is generally in the scope of 800MHZ and 2GHZ, so Car Burglar Alarm main frame 11 and ZIGBEE network communication module 13 are fully can communication, Car Burglar Alarm main frame 11 when stolen the GPS locating data and the user profile of time and vehicle send to ZIGBEE network communication module 13.
From the power supply power taking of automobile, himself also has emergency battery during the work of ZIGBEE network communication module 13, and volume is little, and is hidden as much as possible during installation, and has I/O to be used for control to cut off automobile oil circuit and circuit.
During 13 work of ZIGBEE network communication module, its software section is made of ZIGBEE underlying protocol and application layer protocol, underlying protocol adopts the ZIGBEE protocol stack of standard, probably take storage space 32K, the main dynamic group net function of being responsible for realizing ZIGBEE, particular content is not in areal of research of the present invention, so be not described in further detail, this agreement can be bought from ZIGBEE alliance.
Specify ZIGBEE network communication module 13 in service condition below in conjunction with Fig. 2 and diagram of circuit shown in Figure 3:
As shown in Figure 2, under ZIGBEE transmission network 14 normal operation:
Step 201:ZIGBEE network communication module 13 is in the state of intercepting, and constantly search whether in ZIGBEE transmission network 14;
Step 202: when vehicle enters ZIGBEE transmission network 14, if there is vehicle stolen and need when not searching ZIGBEE transmission network 14, to turn back to step 201 by this node reporting information servicing center 12;
Step 203:ZIGBEE network communication module 13 has judged whether alert reporting information servicing center 12, if judge have, then goes to and carries out next step;
Step 204: this node adds the alert data of receiving GPS location information and the automobile monitoring information such as the number-plate number of self;
Step 205: the described information of step 204 is reported even higher level of node, reach Centroid after the relay so layer by layer, by Centroid data are passed to information service center 12 then.
Another kind of situation is, there is not the ZIGBEE network coordinator near the stolen vehicle, but because can mutual communication between the ZIGBEEF repeater, as long as also transceive data mutually in the same passage of 2 ZIGBEEF repeater in 16 passages, if therefore at this moment do not received the data of reporting to the police by switching channel at the ZIGBEE network, this ZIGBEE network communication module 13 at once with Car Burglar Alarm main frame 11 by two-way RF and 112 communications of GPS locating module, these alert data are sent to the GPS terminal, by the GSM network data are sent to the center by the GPS terminal, with reference to Fig. 3, its algorithm can be described as:
Step 301:ZIGBEE network communication module 13 is in the state of intercepting, and constantly search whether in ZIGBEE transmission network 14;
Step 302: when vehicle enters ZIGBEE transmission network 14, if there is vehicle stolen and need by this node reporting information servicing center 12, when not searching ZIGBEE transmission network 14, execution in step 303;
Step 303: timing switching channels;
Near step 304: the alert that the vehicle request is transmitted receiving?
Step 305: and the GPS terminal is got in touch by RF;
Step 306: alert is sent to the GPS terminal, and GPS sends to the center.
Core of the present invention is to propose to install ZIGBEE network communication module 13 additional at traditional automobile GPS Car Burglar Alarm, thereby makes vehicle from the stolen problem that all can't report to the police that is removed to burglary-resisting installation in order to solve GSM or cdma network conductively-closed.And this system power dissipation is low, volume is little, install very hidden, and utilize RF to communicate by letter with original Car Burglar Alarm, so extremely be not easy to be found, only otherwise be found, searching ZIGBEE transmission network 14 or other the vehicle that this equipment is housed that this ZIGBEE network communication module 13 will not stop reach the purpose that reports alert to give the center, and in case search the approximate location of this vehicle, can also be electric by the oil of locked this car in center, thus reach the purpose of recovering stolen vehicle and arresting the offender.
Above-mentioned implementation procedure is a preferential implementation procedure of the present invention, and common variation and replacement that those skilled in the art carries out on basis of the present invention are included within protection scope of the present invention.
Claims (8)
1. the alarms and security systems for automobiles with the ZIGBEE network communication module (10), comprise the Car Burglar Alarm main frame (11) that is provided with GSM/CDMA communication module (111) and GPS locating module (112), it is characterized in that: in Car Burglar Alarm main frame (11), be provided with bi-directional RF module (15) and radio-frequency antenna (16), also comprise ZIGBEE network communication module (13), described GPS locating module (112) is connected with bi-directional RF module (15) and by this bi-directional RF module (15) automobile monitoring information is sent to ZIGBEE network communication module (13), realize intercoming mutually with ZIGBEE network communication module (13), described ZIGBEE network communication module (13) sends to information service center (12) by ZIGBEE transmission network (14) with the automobile monitoring information that receives.
2. according to the described alarms and security systems for automobiles of being with the ZIGBEE network communication module of claim 1, it is characterized in that: described GPS locating module (112) is electrically connected with GSM/CDMA communication module (111), and sends automobile monitoring information to information service center (12) by GSM/CDMA transmission network (17).
3. according to the alarms and security systems for automobiles of the described band of claim 1 ZIGBEE network communication module, it is characterized in that: described automobile monitoring information comprises the user profile of GPS locating data, temporal information and automobile.
4. according to the alarms and security systems for automobiles of the described band of claim 1 ZIGBEE network communication module, it is characterized in that: described ZIGBEE network communication module (13) is operated on the 2.4G frequency range.
5. according to the alarms and security systems for automobiles of the described band of claim 1 ZIGBEE network communication module, it is characterized in that: described bi-directional RF module (15) is operated in the 125KHZ frequency range.
6. according to the alarms and security systems for automobiles of the described band of claim 1 ZIGBEE network communication module, it is characterized in that: described ZIGBEE transmission network (14) is a net structure.
7. according to claim 5 or the 6 described alarms and security systems for automobiless of being with the ZIGBEE network communication modules, it is characterized in that: described ZIGBEE transmission network (14) comprises ZIGBEE network coordinator, ZIGBEE repeater and ZIGBEE final terminal, and described ZIGBEE network communication module (13) is described ZIGBEE final terminal; Described ZIGBEE final terminal is by the ZIGBEE repeater or directly by the ZIGBEE network coordinator automobile monitoring information is sent to information service center (12).
8. according to the alarms and security systems for automobiles of the described band of claim 1 ZIGBEE network communication module, it is characterized in that: described ZIGBEE network coordinator (141) comprises the GPS module, is used to locate the stolen vehicle position.
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| CN2009101050774A CN101780786B (en) | 2009-01-16 | 2009-01-16 | Automobile anti-theft device with ZIGBEE network communication module |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891867A (en) * | 2011-07-19 | 2013-01-23 | 苏州科技学院 | Community IoT (Internet of Things) system based on Zigbee and access control system |
| CN103158667A (en) * | 2013-03-27 | 2013-06-19 | 桂林电子科技大学 | Vehicle anti-theft alarm system |
| CN103618764A (en) * | 2013-11-12 | 2014-03-05 | 杨海峰 | Networking wide-range positioning communication module managing system |
| CN104269905A (en) * | 2014-10-21 | 2015-01-07 | 河南爱浪车业有限公司 | Storage battery management system and method of electric bicycle |
| CN108184221A (en) * | 2017-12-26 | 2018-06-19 | 温州力沃电器有限公司 | A kind of compound exchange method of zigbee node controls data |
| CN109118735A (en) * | 2018-11-02 | 2019-01-01 | 深圳市鼎晟开元科技有限公司 | Alarm method, security device and the storage medium of security device |
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| CN100527171C (en) * | 2006-12-29 | 2009-08-12 | 深圳市赛格导航科技股份有限公司 | Running recording system and method based on ZigBcc |
| CN201042059Y (en) * | 2007-04-16 | 2008-03-26 | 席剑涛 | Car GPS theft prevention, monitoring and navigation system |
| CN201114017Y (en) * | 2007-10-19 | 2008-09-10 | 杭州电子科技大学 | GPS wireless receiving equipment based on ZigBee communication |
| CN201123039Y (en) * | 2007-11-27 | 2008-09-24 | 李铭 | Automobile anti-theft equipment with mobile alarm and wireless locating function |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891867A (en) * | 2011-07-19 | 2013-01-23 | 苏州科技学院 | Community IoT (Internet of Things) system based on Zigbee and access control system |
| CN103158667A (en) * | 2013-03-27 | 2013-06-19 | 桂林电子科技大学 | Vehicle anti-theft alarm system |
| CN103618764A (en) * | 2013-11-12 | 2014-03-05 | 杨海峰 | Networking wide-range positioning communication module managing system |
| CN104269905A (en) * | 2014-10-21 | 2015-01-07 | 河南爱浪车业有限公司 | Storage battery management system and method of electric bicycle |
| CN108184221A (en) * | 2017-12-26 | 2018-06-19 | 温州力沃电器有限公司 | A kind of compound exchange method of zigbee node controls data |
| CN108184221B (en) * | 2017-12-26 | 2021-03-23 | 温州力沃电器有限公司 | Composite exchange method for zigbee node control data |
| CN109118735A (en) * | 2018-11-02 | 2019-01-01 | 深圳市鼎晟开元科技有限公司 | Alarm method, security device and the storage medium of security device |
| CN109118735B (en) * | 2018-11-02 | 2021-06-29 | 深圳市鼎晟开元科技有限公司 | Alarm method of security equipment, security equipment and storage medium |
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| CN101780786B (en) | 2011-09-21 |
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