CN102426739B - Wireless intelligent door magnet system and operating method - Google Patents
Wireless intelligent door magnet system and operating method Download PDFInfo
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- CN102426739B CN102426739B CN 201110271691 CN201110271691A CN102426739B CN 102426739 B CN102426739 B CN 102426739B CN 201110271691 CN201110271691 CN 201110271691 CN 201110271691 A CN201110271691 A CN 201110271691A CN 102426739 B CN102426739 B CN 102426739B
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Abstract
The invention discloses a wireless intelligent door magnet system and an operating method. The system comprises a power supply module, a door magnet induction switch module, a central processing module, a radio frequency modulating and transmitting module and a low voltage detection module, wherein the door magnet induction switch module comprises a magnetic reed switch and a light touch button; the central processing module is connected with the low voltage detection module; a control interface of the central processing module is connected with a controlled interface of the radio frequency modulating and transmitting module to form a control bus, and a data transmitting interface of the central processing module is connected with a data input interface of the radio frequency modulating and transmitting module to form a data bus; the central processing module samples the status of the magnetic reed switch through a first sampling interface; the central processing module samples the current status of the light touch button through a second sampling interface; and the central processing module is provided with a timer, and the timer is provided with fixed time and overtime awakening information. Through the invention, the security of the door magnet system can be improved.
Description
Technical field
The present invention relates to safety-security area, relate in particular to a kind of wireless intelligent door magnetic system and method for work.
Background technology
Whether door magnetic is illegally opened or mobile security device for detection door, window etc.Once have the people illegally to open door or window, door magnetic and magnet will produce displacement, alerting signal also can be transmitted to the receiving end of holding in owner's hand immediately.
Traditional door magnetic is merely able to send single signal, i.e. door and window opening signal.Good anti-theft function can not be played, the signal of Switch for door and window state can not be detected, send.The door and window of not closing in addition, also can make house be subject to the erosion of wind and rain when blowing and raining.
Existing wireless door magnetic adopts the disposable battery power supply more, for guaranteeing the normal operation of door magnetic, just need to periodically change battery.But existing wireless door magnetic does not arrange the battery low-voltage testing circuit, and the duty of the general meaning door magnetic of also can not going or staying of people, so that in door magnetic low-voltage or no-voltage situation, people can not change battery in time, just there has been potential safety hazard in this.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of wireless intelligent door magnetic system and method for work, can the real-time detection door and window and the state of door magnetic system itself, and when changing, sends in time state information.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of wireless intelligent door magnetic system is provided, comprises power module, door magnetic induction switch module, central processing module, rf modulations transmitter module and low voltage detecting module; Described door magnetic induction switch module comprises magnetic reed switch and contact button; Described central processing module comprises control interface, data transmission interface, the first Sampling Interface, the second Sampling Interface; Described rf modulations transmitter module comprises controlled interface, Data Input Interface; Described central processing module is connected with low voltage detecting module; Described low voltage detecting module is for detection of the operating voltage of described central processing module and judge whether described central processing module is operated in low-pressure state; Described central processing module the first Sampling Interface is by the current state of the described magnetic reed switch that is connected with described magnetic reed switch to sample, and described central processing module the second Sampling Interface is by the current state of the described contact button that is connected with described contact button to sample; Described central processing module also is provided with timer, and described set timer has regularly, the overtime information of waking up; The control interface of described central processing module is connected with the controlled interface of described rf modulations transmitter module; The data transmission interface of described central processing module is connected with the Data Input Interface of described rf modulations transmitter module; Described central processing module also comprises the ciphering unit that the data for sending to described rf modulations module through described data transmission interface are encrypted.
Wherein, the control interface of described central processing module is connected by control bus with the controlled interface of described rf modulations transmitter module, and the data transmission interface of described central processing module is connected by sending data bus with the Data Input Interface of described rf modulations transmitter module; Described control bus is controlled the duty of described rf modulations transmitter module, and the modulating data after described transmission data bus is processed described central processing module sends to described rf modulations transmitter module.
Wherein, described central processing module also comprises voltage output, voltage input, and described low voltage detecting module comprises comparer and reference voltage source, and described comparer comprises the first input port, the second input port, detects voltage output; Described reference voltage source negative pole connects the first input port of described comparer, reference voltage source plus earth; The second input port of described comparer connects the voltage output of described central processing module, and the detection voltage output of described comparer connects the voltage input of described central processing module.
Wherein, described low voltage detecting module is integrated in described central processing module.
Wherein, described central processing module is provided with timer, and described set timer has regularly, the overtime information of waking up.
Wherein, described wireless intelligent door magnetic system also comprises indicating lamp module; Described central processing module also comprises the first delivery outlet; Described indicating lamp module is connected with the first delivery outlet of described central processing module.
For solving the problems of the technologies described above, another technical solution used in the present invention is: a kind of method of work of wireless intelligent door magnetic system is provided, comprises the following steps:
201., after system powers on, described central processing module enters normal mode of operation;
203. described central processing module detects to described low voltage detecting module by the voltage output output voltage;
204. judge that whether timer is overtime, if directly by step 204, enter step 207; If not, enter step 205;
205. described central processing module by the current described magnetic reed switch state of the first Sampling Interface sampling, judges that whether current state is the same with the state of preserving before sleep;
If carry out step 206; If not, carry out step 207;
206. whether described central processing module is by the current described contact button state of the second Sampling Interface sampling, conducting;
If carry out step 207; If not, carry out step 211;
207. it is enable mode that described central processing module is controlled described rf modulations transmitter module;
208. described central processing module sends modulating data to described rf modulations transmitter module, described modulating data comprises the testing result of described low voltage detecting module, described magnetic reed switch state, described contact button state;
Described modulating data is through encrypting;
209. prepare before sleep, preserve the state of magnetic reed switch;
210. it is shutdown mode that described central processing module is controlled described rf modulations transmitter module;
211. it is battery saving mode that described central processing module makes low voltage detecting module;
213. described central processing module arranges awakening mode;
214. described central processing module arranges the overtime wakeup time of timer;
215. described central processing module enters the sleep battery saving mode;
Be waken up from battery saving mode 216. meet the described central processing module of wake-up condition, return to step 201;
Described wake-up condition refers to, the input IO state of timer expiry or described central processing module changes.
Wherein, also comprise step 202 between described step 201, step 203: described central processing module is lighted indication by controlling the first delivery outlet;
Also comprise step 212 between described step 211, step 213: described central processing module is closed pilot lamp by controlling the first delivery outlet.
The invention has the beneficial effects as follows: the wireless door magnetic that is different from prior art does not emit the signal of these show gate magnetic duties, there is potential safety hazard, wireless intelligent door magnetic system of the present invention, passing through the voltage output output voltage by central processing module detects to described low voltage detecting module, the current described magnetic reed switch state of the first Sampling Interface sampling, the current described contact button state of the second Sampling Interface sampling, the data transmission interface sends described modulating data to described rf modulations transmitter module, the state when door realized changes or battery cover while being opened, can wirelessly send No. ID that comprises when Qianmen magnetic, status information when Qianmen, the state of current battery cover, when whether Qianmen magnetic is operated in the function of the modulating data of encrypting through rolling code of low-pressure state.The user can learn the state of door and the state of door magnetic, the abnormal conditions that may occur with reply in time; When battery cover, open or cell voltage when not enough, the user can take appropriate measures and guarantee the normal use of a magnetic according to the information received; And modulating data process in transmission is encrypted, guaranteed the security of data, described wireless intelligent door magnetic also arranges the timer expiry time, timing wake-up door magnetic and transmission modulating data, and regularly by described central processing module, control the 3rd delivery outlet and control the indicating lamp module demonstration, make the user whether can regularly understand the whether working properly and battery of a magnetic in the low voltage operating state, and process in time corresponding problem.
The accompanying drawing explanation
Fig. 1 is the module map of wireless intelligent door magnetic system embodiment of the present invention;
Fig. 2 is the process flow diagram of wireless intelligent door magnetic system method of work of the present invention;
Wherein,
The second input port of the comparer that A is described low voltage detecting module;
The detection voltage output of the comparer that C is described low voltage detecting module;
The voltage output that B is described central processing module;
The voltage input that D is described central processing module;
The control interface that M is described central processing module;
The data transmission interface that K is described central processing module;
The first Sampling Interface that E is described central processing module;
The second Sampling Interface that R is described central processing module;
The first delivery outlet that P is described central processing module;
The power pins that H is described central processing module;
The grounding pin that F is described central processing module;
The controlled interface that N is described rf modulations transmitter module;
The Data Input Interface that L is described rf modulations transmitter module;
The power pins that I is described rf modulations transmitter module;
The grounding pin that G is described rf modulations transmitter module.
Embodiment
By describing technology contents of the present invention, structural attitude in detail, being realized purpose and effect, below in conjunction with embodiment and coordinate accompanying drawing to be explained in detail.
Refer to Fig. 1, the present invention relates to a kind of wireless intelligent door magnetic, comprise power module, door magnetic induction switch module, central processing module, rf modulations transmitter module and low voltage detecting module; Described door magnetic induction switch module comprises magnetic reed switch and contact button; Described central processing module comprises control interface M, data transmission interface K, the first Sampling Interface E, the second Sampling Interface R; Described rf modulations transmitter module comprises controlled interface N, Data Input Interface L; Described central processing module is connected with low voltage detecting module; Described low voltage detecting module is for detection of the operating voltage of described central processing module and judge whether described central processing module is operated in low-pressure state; Described central processing module the first Sampling Interface E is by the current state of the described magnetic reed switch that is connected with described magnetic reed switch to sample, and described central processing module the second Sampling Interface R is by the current state of the described contact button that is connected with described contact button to sample; Described central processing module also is provided with timer, and described set timer has regularly, the overtime information of waking up; The control interface M of described central processing module is connected with the controlled interface N of described rf modulations transmitter module; The data transmission interface K of described central processing module is connected with the Data Input Interface L of described rf modulations transmitter module; Described central processing module also comprises the ciphering unit that the data for sending to described rf modulations module through described data transmission interface are encrypted.
In one embodiment, the control interface M of described central processing module is connected by control bus with the controlled interface N of described rf modulations transmitter module, and the data transmission interface K of described central processing module is connected by sending data bus with the Data Input Interface L of described rf modulations transmitter module; Described control bus is controlled the duty of described rf modulations transmitter module, and the modulating data after described transmission data bus is processed described central processing module sends to described rf modulations transmitter module.Described central processing module also is provided with timer, and described set timer has regularly, the overtime information of waking up.Can after setting-up time, control central processing module timed sending related data, make the user can regularly understand a magnetic information; If the overtime data that do not send of central processing module, therefore the user can notice a magnetic system possibility operation irregularity and then artificial the eliminating extremely, increases reliability.
Described central processing module also comprises voltage output B, voltage input D, and described low voltage detecting module comprises comparer and reference voltage source, and described comparer comprises the first input port, the second input port A, detects voltage output C; Described reference voltage source negative pole connects the first input port of described comparer, reference voltage source plus earth; The second input port A of described comparer connects the voltage output of described central processing module, and the detection voltage output C of described comparer connects the voltage input of described central processing module.The voltage output B output detections voltage of described central processing module detects to described low voltage detecting module; The magnitude of voltage of described central processing module output is during lower than the detection voltage fiducial value of described low voltage detecting module, and the output valve that described low voltage detecting module detects voltage output C is 0V, and now described central processing module is operated in low-pressure state; The magnitude of voltage of described central processing module output is during greater than or equal to the detection voltage fiducial value of described low voltage detecting module, the output valve that described low voltage detecting module detects voltage output C equals the magnitude of voltage that described central processing module is exported, and now described central processing module is operated in normal condition; The value that the voltage fiducial value of described low voltage detecting module is described reference voltage source.
In a further embodiment, low voltage detecting module can also be integrated in described central processing module, directly at the internal judgment central processing module, whether is operated in low-pressure state and produces corresponding signal.
Consult Fig. 1, in the present embodiment, described wireless intelligent door magnetic system also comprises indicating lamp module; Described central processing module also comprises the first delivery outlet P; Described indicating lamp module is connected with the first delivery outlet P of described central processing module.This pilot lamp can be according to the relevant information of the steering order indicating door magnetic information of central processing module, for example, when battery electric quantity is too low while needing to change, can, by predetermined pattern display case as shown red light or flicker etc., make the user can process in time corresponding problem.
Refer to Fig. 2, this comprises the following steps for the process flow diagram of wireless intelligent door magnetic system method of work of the present invention:
201,, after system powers on, described central processing module enters normal mode of operation.
202, described central processing module is by controlling the bright pilot lamp of the first output stomion P;
It is high level that described central processing module makes the first delivery outlet P, lights pilot lamp.
203, described central processing module detects to described low voltage detecting module by the voltage output output voltage;
The second input port A in described low voltage detecting module, for detecting the voltage input, detects voltage output C for detecting Voltage-output, and when the voltage of A is greater than can detect voltage the time, the voltage of C approximates the voltage of A, and now C is high level; When the voltage of A is less than can detect voltage the time, the voltage of C is 0V, and now C is low level, also just illustrates that cell voltage processes low-pressure state; The value that the voltage fiducial value of described low voltage detecting module is described reference voltage source.
204, judge that whether timer is overtime;
If carry out step 207; If not, carry out step 205.
205, described central processing module, by the current described magnetic reed switch state of the first Sampling Interface sampling, judges that whether current state is the same with the state of preserving before sleep;
If carry out step 206; If not, carry out step 207.
Whether 206, described central processing module is by the current described contact button state of the second Sampling Interface sampling, conducting;
If carry out step 207; If not, carry out step 211.
207, to control described rf modulations transmitter module be enable mode to described central processing module.
208, described central processing module sends modulating data to described rf modulations transmitter module, and described modulating data comprises the testing result of described low voltage detecting module, described magnetic reed switch state, described contact button state;
Described modulating data comprises No. ID of described wireless intelligent door magnetic system, the status information of current described magnetic reed switch, the status information of current described contact button, current described wireless intelligent door magnetic system whether is operated in low-pressure state information and whether current described wireless intelligent door magnetic system is that timer expiry wakes information up; Described modulating data is through encrypting.
209, prepare before the sleep, preserve the state of magnetic reed switch.
210, to control described rf modulations transmitter module be shutdown mode to described central processing module.
211, to make low voltage detecting module be battery saving mode to described central processing module.
212, described central processing module is closed pilot lamp by the first delivery outlet P.
213, described central processing module arranges awakening mode.
214, described central processing module arranges the timer expiry wakeup time.
215, described central processing module enters the sleep battery saving mode.
216, meet wake-up condition, described central processing module is waken up from battery saving mode, returns to step 201;
Described wake-up condition refers to timer expiry, or the input IO state of described central processing module changes.
Use when of the present invention, wireless intelligent door magnetic system is placed on doorframe, and magnet is placed on door; Contact button is connected with battery cover, and the opening or closed conducting or the disconnection that can control contact button of battery cover, so contact button is used for the state of sampling when Qianmen magnetic system battery cover.When door is opened or battery cover while being opened, whether the door magnetic system will send at once the state of the status information comprised when the ID ,Dang Qianmen of Qianmen magnetic, current battery cover, be that timer expiry wakes modulating data that information encrypts through the rolling code handheld terminal to the client up when whether Qianmen magnetic is operated in low-pressure state and current described wireless intelligent door magnetic system, make the user can regularly understand a magnetic information, for house and household's safety provides very large guarantee.
In the present invention, the wireless door magnetic that is different from prior art does not emit the signal of these show gate magnetic duties, there is potential safety hazard, wireless intelligent door magnetic system of the present invention, passing through the voltage output output voltage by central processing module detects to described low voltage detecting module, the current described magnetic reed switch state of the first Sampling Interface sampling, the current described contact button state of the second Sampling Interface sampling, the data transmission interface sends described modulating data to described rf modulations transmitter module, the state when door realized changes or battery cover while being opened, can wirelessly send No. ID that comprises when Qianmen magnetic, status information when Qianmen, the state of current battery cover, when whether Qianmen magnetic is operated in the function of the modulating data of encrypting through rolling code of low-pressure state.The user can learn the state of door and the state of door magnetic, the abnormal conditions that may occur with reply in time; When battery cover, open or cell voltage when not enough, the user can take appropriate measures and guarantee the normal use of a magnetic according to the information received; And modulating data through encrypting, has been guaranteed the security of data in transmission.Described wireless intelligent door magnetic also arranges the timer expiry time, timing wake-up door magnetic and transmission modulating data, and regularly by described central processing module, control the 3rd delivery outlet and control the indicating lamp module demonstration, make the user whether can regularly understand the whether working properly and battery of a magnetic in the low voltage operating state, and process in time corresponding problem.
In addition, described low voltage detecting module also can be integrated in described central processing module, can reach identical technique effect so equally.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure transformation that utilizes instructions of the present invention and accompanying drawing content to do, or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present invention.
Claims (7)
1. a wireless intelligent door magnetic system is characterized in that:
Comprise power module, door magnetic induction switch module, central processing module, rf modulations transmitter module and low voltage detecting module; Described door magnetic induction switch module comprises magnetic reed switch and contact button; Described central processing module comprises control interface, data transmission interface, the first Sampling Interface, the second Sampling Interface; Described rf modulations transmitter module comprises controlled interface, Data Input Interface;
Described central processing module is connected with low voltage detecting module; Described low voltage detecting module is for detection of the operating voltage of described central processing module and judge whether described central processing module is operated in low-pressure state;
Described central processing module the first Sampling Interface is by the current state of the described magnetic reed switch that is connected with described magnetic reed switch to sample, and described central processing module the second Sampling Interface is by the current state of the described contact button that is connected with described contact button to sample; Described central processing module also is provided with timer, and described set timer has regularly, the overtime information of waking up;
The control interface of described central processing module is connected with the controlled interface of described rf modulations transmitter module; The data transmission interface of described central processing module is connected with the Data Input Interface of described rf modulations transmitter module; Described central processing module also comprises the ciphering unit that the data for sending to described rf modulations transmitter module through described data transmission interface are encrypted;
The fit system of native system module is as follows:
201., after system powers on, described central processing module enters normal mode of operation;
203. described central processing module detects to described low voltage detecting module by the voltage output output voltage;
204. judge that whether timer is overtime, if forward to and carry out 207; If not, forward to and carry out 205;
205. described central processing module by the current described magnetic reed switch state of the first Sampling Interface sampling, judges that whether current state is the same with the state of preserving before sleep;
If carry out 206; If not, carry out 207;
206. whether described central processing module is by the current described contact button state of the second Sampling Interface sampling, conducting;
If carry out 207; If not, carry out 211;
207. it is enable mode that described central processing module is controlled described rf modulations transmitter module;
208. described central processing module sends modulating data to described rf modulations transmitter module, described modulating data comprises the testing result of described low voltage detecting module, described magnetic reed switch state, described contact button state;
Described modulating data is through encrypting;
209. prepare before sleep, preserve the state of magnetic reed switch;
210. it is shutdown mode that described central processing module is controlled described rf modulations transmitter module;
211. it is battery saving mode that described central processing module makes low voltage detecting module;
213. described central processing module arranges awakening mode;
214. described central processing module arranges the overtime wakeup time of timer;
215. described central processing module enters the sleep battery saving mode;
216. meet wake-up condition, described central processing module is waken up from battery saving mode, returns to 201;
Described wake-up condition refers to timer expiry, or the input IO state of described central processing module changes.
2. wireless intelligent door magnetic system according to claim 1 is characterized in that:
The control interface of described central processing module is connected by control bus with the controlled interface of described rf modulations transmitter module, and the data transmission interface of described central processing module is connected by sending data bus with the Data Input Interface of described rf modulations transmitter module; Described control bus is controlled the duty of described rf modulations transmitter module, and the modulating data after described transmission data bus is processed described central processing module sends to described rf modulations transmitter module.
3. wireless intelligent door magnetic system according to claim 1 is characterized in that:
Described central processing module also comprises voltage output, voltage input, and described low voltage detecting module comprises comparer and reference voltage source, and described comparer comprises the first input port, the second input port, detects voltage output; Described reference voltage source negative pole connects the first input port of described comparer, reference voltage source plus earth; The second input port of described comparer connects the voltage output of described central processing module, and the detection voltage output of described comparer connects the voltage input of described central processing module.
4. wireless intelligent door magnetic system according to claim 1 is characterized in that:
Described low voltage detecting module is integrated in described central processing module.
5. according to the described wireless intelligent door magnetic system of claim 1 to 4 any one, it is characterized in that:
Described wireless intelligent door magnetic system also comprises indicating lamp module; Described central processing module also comprises the first delivery outlet;
Described indicating lamp module is connected with the first delivery outlet of described central processing module.
6. the method for work of a wireless intelligent door magnetic system as claimed in claim 1 is characterized in that comprising the following steps:
201., after system powers on, described central processing module enters normal mode of operation;
203. described central processing module detects to described low voltage detecting module by the voltage output output voltage;
204. judge that whether timer is overtime, if directly by step 204, enter step 207; If not, enter step 205;
205. described central processing module by the current described magnetic reed switch state of the first Sampling Interface sampling, judges that whether current state is the same with the state of preserving before sleep;
If carry out step 206; If not, carry out step 207;
206. whether described central processing module is by the current described contact button state of the second Sampling Interface sampling, conducting;
If carry out step 207; If not, carry out step 211;
207. it is enable mode that described central processing module is controlled described rf modulations transmitter module;
208. described central processing module sends modulating data to described rf modulations transmitter module, described modulating data comprises the testing result of described low voltage detecting module, described magnetic reed switch state, described contact button state;
Described modulating data is through encrypting;
209. prepare before sleep, preserve the state of magnetic reed switch;
210. it is shutdown mode that described central processing module is controlled described rf modulations transmitter module;
211. it is battery saving mode that described central processing module makes low voltage detecting module;
213. described central processing module arranges awakening mode;
214. described central processing module arranges the overtime wakeup time of timer;
215. described central processing module enters the sleep battery saving mode;
216. meet wake-up condition, described central processing module is waken up from battery saving mode, returns to step 201;
Described wake-up condition refers to timer expiry, or the input IO state of described central processing module changes.
7. method according to claim 6 is characterized in that:
Also comprise step 202 between described step 201, step 203: described central processing module is lighted pilot lamp by controlling the first delivery outlet;
Also comprise step 212 between described step 211, step 213: described central processing module is closed pilot lamp by controlling the first delivery outlet.
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| CN 201110271691 CN102426739B (en) | 2011-09-14 | 2011-09-14 | Wireless intelligent door magnet system and operating method |
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| CN 201110271691 CN102426739B (en) | 2011-09-14 | 2011-09-14 | Wireless intelligent door magnet system and operating method |
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| CN102426739A CN102426739A (en) | 2012-04-25 |
| CN102426739B true CN102426739B (en) | 2013-12-18 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102831666A (en) * | 2012-09-07 | 2012-12-19 | 重庆大学 | Recording device for opening state of door and window |
| CN103839354A (en) * | 2014-03-25 | 2014-06-04 | 文江湖 | Wireless detector, guard against theft and alarm system, routing inspection method and low voltage detection method |
| CN105427562A (en) * | 2015-11-26 | 2016-03-23 | 北京奇虎科技有限公司 | Communication method and system for door sensor device and response device |
| CN113053050A (en) * | 2021-03-31 | 2021-06-29 | 湖南茴香智能科技有限公司 | Single door magnetic device |
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| US6737969B2 (en) * | 2001-11-27 | 2004-05-18 | Ion Digital Llp | Wireless security sensor systems for windows and doors |
| CN101271604A (en) * | 2007-03-19 | 2008-09-24 | 黄德祥 | Anti-theft device for property |
| CN201374110Y (en) * | 2009-03-19 | 2009-12-30 | 东莞盛世科技电子实业有限公司 | Multifunctional wireless anti-theft alarm system for house |
| CN201449655U (en) * | 2009-06-04 | 2010-05-05 | 江苏中讯数码电子有限公司 | Sound-prompt wireless door magnetic sensor |
| CN202217358U (en) * | 2011-09-14 | 2012-05-09 | 深圳市鼎盛威电子有限公司 | Wireless intelligent door magnetic system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3991924B2 (en) * | 2003-05-27 | 2007-10-17 | 松下電工株式会社 | Transmitter |
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|---|---|---|---|---|
| US6737969B2 (en) * | 2001-11-27 | 2004-05-18 | Ion Digital Llp | Wireless security sensor systems for windows and doors |
| CN101271604A (en) * | 2007-03-19 | 2008-09-24 | 黄德祥 | Anti-theft device for property |
| CN201374110Y (en) * | 2009-03-19 | 2009-12-30 | 东莞盛世科技电子实业有限公司 | Multifunctional wireless anti-theft alarm system for house |
| CN201449655U (en) * | 2009-06-04 | 2010-05-05 | 江苏中讯数码电子有限公司 | Sound-prompt wireless door magnetic sensor |
| CN202217358U (en) * | 2011-09-14 | 2012-05-09 | 深圳市鼎盛威电子有限公司 | Wireless intelligent door magnetic system |
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