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CN105913593A - Method and system for judging state of door magnetic system - Google Patents

Method and system for judging state of door magnetic system Download PDF

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Publication number
CN105913593A
CN105913593A CN201610517413.6A CN201610517413A CN105913593A CN 105913593 A CN105913593 A CN 105913593A CN 201610517413 A CN201610517413 A CN 201610517413A CN 105913593 A CN105913593 A CN 105913593A
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CN
China
Prior art keywords
state
magnetic induction
induction element
door
magnetic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610517413.6A
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Chinese (zh)
Inventor
李志晨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Technology (shenzhen) Co Ltd
Original Assignee
Technology (shenzhen) Co Ltd
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Filing date
Publication date
Application filed by Technology (shenzhen) Co Ltd filed Critical Technology (shenzhen) Co Ltd
Priority to CN201610517413.6A priority Critical patent/CN105913593A/en
Publication of CN105913593A publication Critical patent/CN105913593A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00Burglar, theft or intruder alarms
    • G08B13/02Mechanical actuation
    • G08B13/08Mechanical actuation by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

The invention provides a method and a system for judging the state of a door magnetic system. The method comprises the following steps of: acquiring a state signal of a first magnetic induction element and the state signal of a second magnetic induction element, wherein the first magnetic induction element is not located in a constant magnetic field generated by an adjacent permanent magnet, and the second magnetic induction element is located in the constant magnetic field generated by the permanent magnet; judging the state of the door magnetic system according to the state signals; if the state signal of the first magnetic induction element is a first state and the state signal of the second magnetic induction element is the first state, the door magnetic system is broken; or if the state signal of the first magnetic induction element is a second state and the state signal of the second magnetic induction element is the first state, the door magnetic system is not broken. Through implementation of the method and the system, the state of the door magnetic system can be judged through a cheap passive device.

Description

Method and system for judging state of door magnet system
Technical Field
The invention relates to the field of electric data processing, in particular to a method and a system for judging the state of a door sensor system.
Background
The door magnet is the most common security product in the market at present. The traditional door magnetic sensor consists of two parts: a permanent magnet having a permanent magnet inside to generate a constant magnetic field; the door magnet body is internally provided with a magnetic induction element, and is usually a reed switch or a Hall sensor. The permanent magnet is installed in the door frame (window frame), and the magnetic induction element is installed in the door leaf (window sash). The magnetic induction element judges the opening and closing of the door by detecting the magnetic field intensity formed by the nearby permanent magnet, namely the magnetic field intensity is in a first state (the magnetic field intensity is larger as the magnetic field intensity is closer to the permanent magnet) when the magnetic field intensity is large, and the magnetic field intensity is in a second state (the magnetic field intensity is smaller as the magnetic field intensity is farther from the permanent magnet) when the magnetic field intensity is small, wherein the first state and the second state are corresponding, namely the first state is opened, the second state is closed, and the first state is closed and the second state is.
For the traditional door magnet, the door magnet can be easily cracked by using a strong magnet. A cracker only needs to use a magnetic field detector to scan the outside of the door to determine the approximate position of the permanent magnet, and then a strong magnet is respectively stuck to the door frame (window frame) and the door leaf (window sash) near the position. Therefore, no matter the door is opened or closed, a strong magnet can keep unchangeable relative position with the door magnet main body all the time, thereby the magnetic induction element can detect the magnetic field all the time around, even the door is opened also can't sense the magnetic field change and the mistake is regarded as that door and window is in the closed state all the time. The method can enable all traditional door magnets to be invalid, and is a huge potential safety hazard for a security product.
In order to solve the problems, a plurality of novel door magnets adopt a multi-axis acceleration sensor to replace a magnetic induction element to detect the state change of the door and the window. The acceleration sensor door sensor has the following disadvantages:
the acceleration sensor is very expensive compared to a clarinet. The processing chip of the acceleration sensor signal also requires more powerful computing power, which continues to increase the cost.
The acceleration sensor is an active device and the clarinet is a passive device, so that a great deal of extra power consumption is detected by the continuous operation of the acceleration sensor.
The acceleration sensor can only sense the motion state of the door and window but cannot sense the absolute opening and closing position of the door and window, so that an extra calibration step is needed before use, and the accumulated error is caused after the use time is long.
Disclosure of Invention
In view of this, the present invention provides a method and a system for determining a state of a door sensor system, so as to solve the problems of the prior art that the door sensor system is expensive and the components are active components.
Specifically, the invention is realized by the following technical scheme:
the invention provides a method for judging the state of a door sensor system, which comprises the following steps:
acquiring a state signal of a first magnetic induction element and a state signal of a second magnetic induction element, wherein the first magnetic induction element is not in a constant magnetic field generated by a permanent magnet adjacent to the first magnetic induction element, and the second magnetic induction element is in the constant magnetic field generated by the permanent magnet;
judging the state of the door magnetic system according to the state signal:
if the state signal of the first magnetic induction element is in a first state and the state signal of the second magnetic induction element is in the first state, the door magnetic system is cracked; or,
if the state signal of the first magnetic induction element is in a second state and the state signal of the second magnetic induction element is in a first state, the door sensor system is not cracked, the first state corresponds to the second state, if the first state is open, the second state is closed, and if the first state is closed, the second state is open.
The invention also provides a system for judging the state of the door sensor system, which comprises:
the state signal acquisition unit is used for acquiring a state signal of a first magnetic induction element and a state signal of a second magnetic induction element, wherein the first magnetic induction element is not positioned in a constant magnetic field generated by a permanent magnet adjacent to the first magnetic induction element, and the second magnetic induction element is positioned in the constant magnetic field generated by the permanent magnet;
the judging unit is used for judging the state of the door magnetic system according to the state signal:
if the state signal of the first magnetic induction element is in a first state and the state signal of the second magnetic induction element is in the first state, the door magnetic system is cracked; or,
if the state signal of the first magnetic induction element is in a second state and the state signal of the second magnetic induction element is in a first state, the door sensor system is not cracked, the first state corresponds to the second state, if the first state is open, the second state is closed, and if the first state is closed, the second state is open.
The embodiment of the invention respectively receives the state signals of two magnetic induction elements which have different position relations with the permanent magnet, and judges the state of the door magnetic system according to the difference of the state signals, thereby providing an effective, convenient and cheap door magnetic system judging system which can judge the state of the door magnetic system through a cheap passive device.
Drawings
FIG. 1 is a flowchart illustrating steps of a method for determining a state of a door magnet system in accordance with an exemplary embodiment of the present invention;
fig. 2 is a block diagram of a system for determining a state of a door magnet system in accordance with an exemplary embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
Fig. 1 is a flowchart illustrating a method for determining a state of a door magnet system according to an exemplary embodiment of the present invention, the method comprising:
step S101, state signals of a first magnetic induction element and state signals of a second magnetic induction element are obtained, the first magnetic induction element is not located in a constant magnetic field generated by a permanent magnet adjacent to the first magnetic induction element, and the second magnetic induction element is located in the constant magnetic field generated by the permanent magnet.
In an embodiment of the present invention, at least one first magnetic induction element, at least one second magnetic induction element and one permanent magnet are provided in the door magnet system, wherein the first magnetic induction element is not in a constant magnetic field generated by the permanent magnet, and the second magnetic induction element is in the constant magnetic field generated by the permanent magnet. The states of the first magnetic induction element and the second magnetic induction element are: closed, open, which states can be distinguished by state signals, such as: 0 represents closed, 1 represents open, the state signal can be provided by a signal acquisition device connected with the magnetic induction element, and the specific signal acquisition device is not described and limited.
Wherein, magnetic induction elements include but are not limited to: reed switches and Hall sensors.
Step S102, judging the state of the door magnetic system according to the state signal:
if the state signal of the first magnetic induction element is in a first state and the state signal of the second magnetic induction element is in the first state, the door magnetic system is cracked; or,
if the state signal of the first magnetic induction element is in a second state and the state signal of the second magnetic induction element is in a first state, the door sensor system is not cracked, the first state corresponds to the second state, if the first state is open, the second state is closed, and if the first state is closed, the second state is open.
In the embodiment of the invention, after the state signals of the first magnetic induction element and the second magnetic induction element are acquired, the state of the door magnet system can be judged. Under normal conditions, the second magnetic induction element is in a constant magnetic field generated by the permanent magnet, so that the second magnetic induction element is always in the first state, the first magnetic induction element is not in the constant magnetic field generated by the permanent magnet, so that the first magnetic induction element is in the second state, and therefore, if the state signal of the first magnetic induction element is in the second state and the state signal of the second magnetic induction element is in the first state, the door magnet system is not cracked; under the condition that receives to explain, second magnetic induction component is still in the constant magnetic field that the permanent magnet produced, therefore second magnetic induction component is in first state all the time, and first magnetic induction component is owing to receive the influence of outside strong magnet, and consequently first magnetic induction component is in first state, so, if first magnetic induction component's state signal is first state, and second magnetic induction component's state signal is first state, then the door magnetism system is explained, first state with the second state is corresponding, if first state is for opening, then the second state is closed, if first state is closed, then the second state is for opening.
The embodiment of the invention respectively receives the state signals of two magnetic induction elements which have different position relations with the permanent magnet, and judges the state of the door magnetic system according to the difference of the state signals, thereby providing an effective, convenient and cheap judging method of the door magnetic system, and judging the state of the door magnetic system through a cheap passive device.
As an optional embodiment of the present invention, after the step of determining the state of the door magnet system according to the state signal, the method further comprises:
and if the state of the door magnetic system is cracked, judging the state of the door and the window through the auxiliary sensor.
In the embodiment of the invention, if the door magnetic system is judged to be cracked, whether the door and the window are opened or not can be judged through the mounted auxiliary sensor, namely, the state of the door and the window is judged. Specifically, the auxiliary sensors include, but are not limited to: infrared proximity sensor, acceleration sensor, vibrations sensor. The infrared proximity sensor detects whether the infrared proximity sensor is opposite to the permanent magnet to judge whether the door and the window are opened or not, the acceleration sensor detects whether the door and the window have acceleration to judge whether the door and the window are opened or not, and the vibration sensor detects whether the door and the window vibrate to judge whether the door and the window are opened or not.
Fig. 2 is a block diagram of a system for determining a state of a door sensor system according to an exemplary embodiment of the present invention, which only shows a portion related to the embodiment of the present invention for convenience of description, and the system includes:
a state signal obtaining unit 201, configured to obtain a state signal of a first magnetic induction element and a state signal of a second magnetic induction element, where the first magnetic induction element is not located in a constant magnetic field generated by a permanent magnet adjacent to the first magnetic induction element, and the second magnetic induction element is located in a constant magnetic field generated by the permanent magnet.
In an embodiment of the present invention, at least one first magnetic induction element, at least one second magnetic induction element and one permanent magnet are provided in the door magnet system, wherein the first magnetic induction element is not in a constant magnetic field generated by the permanent magnet, and the second magnetic induction element is in the constant magnetic field generated by the permanent magnet. The states of the first magnetic induction element and the second magnetic induction element are: closed, open, which states can be distinguished by state signals, such as: 0 represents closed, 1 represents open, the state signal can be provided by a signal acquisition device connected with the magnetic induction element, and the specific signal acquisition device is not described and limited.
Wherein, magnetic induction elements include but are not limited to: reed switches and Hall sensors.
A determining unit 202, configured to determine, according to the state signal, a state of the door sensor system:
if the state signal of the first magnetic induction element is in a first state and the state signal of the second magnetic induction element is in the first state, the door magnetic system is cracked; or,
if the state signal of the first magnetic induction element is in a second state and the state signal of the second magnetic induction element is in a first state, the door sensor system is not cracked, the first state corresponds to the second state, if the first state is open, the second state is closed, and if the first state is closed, the second state is open.
In the embodiment of the invention, after the state signals of the first magnetic induction element and the second magnetic induction element are acquired, the state of the door magnet system can be judged. Under normal conditions, the second magnetic induction element is in a constant magnetic field generated by the permanent magnet, so that the second magnetic induction element is always in the first state, the first magnetic induction element is not in the constant magnetic field generated by the permanent magnet, so that the first magnetic induction element is in the second state, and therefore, if the state signal of the first magnetic induction element is in the second state and the state signal of the second magnetic induction element is in the first state, the door magnet system is not cracked; under the condition that receives to explain, second magnetic induction component is still in the constant magnetic field that the permanent magnet produced, therefore second magnetic induction component is in first state all the time, and first magnetic induction component is owing to receive the influence of outside strong magnet, and consequently first magnetic induction component is in first state, so, if first magnetic induction component's state signal is first state, and second magnetic induction component's state signal is first state, then the door magnetism system is explained, first state with the second state is corresponding, if first state is for opening, then the second state is closed, if first state is closed, then the second state is for opening.
The embodiment of the invention respectively receives the state signals of two magnetic induction elements which have different position relations with the permanent magnet, and judges the state of the door magnetic system according to the difference of the state signals, thereby providing an effective, convenient and cheap door magnetic system judging system which can judge the state of the door magnetic system through a cheap passive device.
As an alternative embodiment of the present invention, the system further comprises:
and the door and window state judging unit 203 is used for judging the state of the door and the window through the auxiliary sensor if the state of the door magnetic system is cracked.
In the embodiment of the invention, if the door magnetic system is judged to be cracked, whether the door and the window are opened or not can be judged through the mounted auxiliary sensor, namely, the state of the door and the window is judged. Specifically, the auxiliary sensors include, but are not limited to: infrared proximity sensor, acceleration sensor, vibrations sensor. The infrared proximity sensor detects whether the infrared proximity sensor is opposite to the permanent magnet to judge whether the door and the window are opened or not, the acceleration sensor detects whether the door and the window have acceleration to judge whether the door and the window are opened or not, and the vibration sensor detects whether the door and the window vibrate to judge whether the door and the window are opened or not.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the invention. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (8)

1. A method of determining a state of a door magnet system, the method comprising:
acquiring a state signal of a first magnetic induction element and a state signal of a second magnetic induction element, wherein the first magnetic induction element is not in a constant magnetic field generated by a permanent magnet adjacent to the first magnetic induction element, and the second magnetic induction element is in the constant magnetic field generated by the permanent magnet;
judging the state of the door magnetic system according to the state signal:
if the state signal of the first magnetic induction element is in a first state and the state signal of the second magnetic induction element is in the first state, the door magnetic system is cracked; or,
if the state signal of the first magnetic induction element is in a second state and the state signal of the second magnetic induction element is in a first state, the door sensor system is not cracked, the first state corresponds to the second state, if the first state is open, the second state is closed, and if the first state is closed, the second state is open.
2. The method of claim 1, wherein the first magnetic induction element comprises: tongue tube, hall sensor, second magnetic induction element includes: reed switches and Hall sensors.
3. The method according to any of claims 1-2, wherein after the step of determining the state of the door magnet system from the state signal, the method further comprises:
and if the state of the door magnetic system is cracked, judging the state of the door and the window through the auxiliary sensor.
4. The method of claim 3, wherein the auxiliary sensor comprises: one or more of an infrared proximity sensor, an acceleration sensor and a vibration sensor.
5. A system for determining a state of a door magnet system, the system comprising:
the state signal acquisition unit is used for acquiring a state signal of a first magnetic induction element and a state signal of a second magnetic induction element, wherein the first magnetic induction element is not positioned in a constant magnetic field generated by a permanent magnet adjacent to the first magnetic induction element, and the second magnetic induction element is positioned in the constant magnetic field generated by the permanent magnet;
the judging unit is used for judging the state of the door magnetic system according to the state signal:
if the state signal of the first magnetic induction element is in a first state and the state signal of the second magnetic induction element is in the first state, the door magnetic system is cracked; or,
if the state signal of the first magnetic induction element is in an open second state and the state signal of the second magnetic induction element is in a first state, the door sensor system is not cracked, the first state corresponds to the second state, if the first state is in the open state, the second state is in the closed state, and if the first state is in the closed state, the second state is in the open state.
6. The system of claim 5, wherein the first magnetic induction element comprises: tongue tube, hall sensor, second magnetic induction element includes: reed switches and Hall sensors.
7. The system of any one of claims 5 to 6, further comprising:
and the door and window state judging unit is used for judging the state of the door and the window through the auxiliary sensor if the state of the door magnetic system is cracked.
8. The system of claim 7, wherein the auxiliary sensor comprises: one or more of an infrared proximity sensor, an acceleration sensor and a vibration sensor.
CN201610517413.6A 2016-06-30 2016-06-30 Method and system for judging state of door magnetic system Pending CN105913593A (en)

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Application Number Priority Date Filing Date Title
CN201610517413.6A CN105913593A (en) 2016-06-30 2016-06-30 Method and system for judging state of door magnetic system

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Application Number Priority Date Filing Date Title
CN201610517413.6A CN105913593A (en) 2016-06-30 2016-06-30 Method and system for judging state of door magnetic system

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CN105913593A true CN105913593A (en) 2016-08-31

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109618242A (en) * 2018-10-11 2019-04-12 苏州天华信息科技股份有限公司 A kind of intelligent exchange application system with equipment chamber door folding detection function
CN116490907A (en) * 2020-09-25 2023-07-25 亚萨合莱股份有限公司 door lock with magnetometer

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1012109A (en) * 1996-06-26 1998-01-16 Matsushita Electric Works Ltd Magnetic proximity switch
CN203476133U (en) * 2013-05-19 2014-03-12 河北工程大学 Window having infrared and vibration double anti-theft alarm functions
CN103670200A (en) * 2012-09-25 2014-03-26 李玉娟 Safety antitheft door
CN203535740U (en) * 2013-10-23 2014-04-09 深圳市中兴新地通信器材有限公司 An anti-interference door magnetic device
CN103745545A (en) * 2014-01-14 2014-04-23 福建创高安防技术有限公司 Door magnetic induction device and method
CN205158558U (en) * 2015-11-24 2016-04-13 武汉百络优物联科技有限公司 Door and window safety inspection device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1012109A (en) * 1996-06-26 1998-01-16 Matsushita Electric Works Ltd Magnetic proximity switch
CN103670200A (en) * 2012-09-25 2014-03-26 李玉娟 Safety antitheft door
CN203476133U (en) * 2013-05-19 2014-03-12 河北工程大学 Window having infrared and vibration double anti-theft alarm functions
CN203535740U (en) * 2013-10-23 2014-04-09 深圳市中兴新地通信器材有限公司 An anti-interference door magnetic device
CN103745545A (en) * 2014-01-14 2014-04-23 福建创高安防技术有限公司 Door magnetic induction device and method
CN205158558U (en) * 2015-11-24 2016-04-13 武汉百络优物联科技有限公司 Door and window safety inspection device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109618242A (en) * 2018-10-11 2019-04-12 苏州天华信息科技股份有限公司 A kind of intelligent exchange application system with equipment chamber door folding detection function
CN116490907A (en) * 2020-09-25 2023-07-25 亚萨合莱股份有限公司 door lock with magnetometer

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Application publication date: 20160831