CN108280961A - A kind of design of the anti-loss device based on Bluetooth technology - Google Patents
A kind of design of the anti-loss device based on Bluetooth technology Download PDFInfo
- Publication number
- CN108280961A CN108280961A CN201710011023.6A CN201710011023A CN108280961A CN 108280961 A CN108280961 A CN 108280961A CN 201710011023 A CN201710011023 A CN 201710011023A CN 108280961 A CN108280961 A CN 108280961A
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- Prior art keywords
- handheld device
- sensor
- bluetooth technology
- design
- bluetooth
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Child & Adolescent Psychology (AREA)
- General Health & Medical Sciences (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The present invention relates to a kind of designs of the anti-loss device based on Bluetooth technology, the design principle of the present invention is as shown in Figure 1, sensor is placed on anti-lost article or child, handheld device is carried by owner, pass through Bluetooth communication between sensor and handheld device, when sensor and handheld device exceed by one it is scheduled apart from when, handheld device will alarm, to be alerted to people, on peripheral hardware, sensor needs toggle switch, voltage indicator, handheld device to need one to code key, a buzzer mute button, confirm pairing beacon lamp, voltage indicator lamp.
Description
Technical field
The invention patent relates to setting for electronic design art more particularly to a kind of anti-loss device based on Bluetooth technology
Meter.
Background technology
Bluetooth technology is initially formulated by Ericsson.Technology starts from 1994 schemes of Ericsson, it is research in movement
The method that low-power consumption, low-cost wireless communication connection are carried out between phone and other accessories.This concept contacts mobile device manufacture
Quotient discusses that its project cooperation develops, is as a result supported.On May 20th, 1999, the easily vertical letter of Sony, International Business Machine, Ying Te
The industries taps such as that, Nokia and Toshiba found " special interest group ", i.e. the predecessor of bluetooth sig, it is therefore an objective to come
Promote and develop Bluetooth technology.The Standard Edition of Bluetooth protocol is 802.15.1s of the SIG by responsible exploitation, which is based on bluetooth
1.1 realize, and have been built up in the bluetooth equipment of many various different purposes.The 802.15.1a of new edition is essentially identical to
1.2 standard of bluetooth has certain QoS characteristics, and completely keeps backwards compatibility.In 2005, bluetooth core specification 2.0 editions
This publication, the version improvements are exactly that high data rate EDR is 2 times of previous version, and reduces power consumption, this is just
Increase the service life of battery.In addition, since bandwidth increases, the system of improving is carried out at the same time the multi-task processing and connection is more
The ability of a bluetooth equipment, and make transmission range up to 100m, flank speed 10Mb/s.2009, and have new rule
Model 3.0, the peak rates are improved（24Mb/s）, technology is 8 times of 2.0.In 2010, specification 4.0 was formally issued, should
Specification is traditional bluetooth technology, the intersection of High Speed Bluetooth technology and low-power consumption bluetooth technology.Bluetooth 4.0 exists compared with previous version
It is more outstanding on battery life, energy saving and device category.
Occur so far, making a general survey of entire course, Bluetooth technology is quickly grown, but cost makes people be concerned about always from Bluetooth technology
The problem of.People are unwilling that big price is spent to be primarily due to the following to buy bluetooth equipment：1. expensive；2. chip is too big；
3. information security；4. anti-interference ability is not strong；5. the problems such as transmission range is short.For these problems, Bluetooth chip specification is
It experienced 5 stages：
（1）It 1998 to 2001, optimizes people's daily demand since Bluetooth operation is convenient and is rapidly developed, the phase
Between also set up Bluetooth SIG, the development of Bluetooth technology this just have the beginning；
（2）2001 to 2002, portioned product began to use Bluetooth technology.But Bluetooth technology at this time is perfect not enough, and
Most important is exactly its particularity for occasion, and this occasion only requires performance and function, and does not have too big requirement, institute to price
With blue tooth products at this moment, there is also high power consumptions and high-cost problem, and not portable enough；
（3）2002 to 2005, Bluetooth technology started to be applied to high-end product, such as palm PC, mobile communication equipment, ear
In the products such as machine, notebook.And the constantly improve of manufacturing technology with optimization so that the manufacturing cost of bluetooth declines, at the same time phase
The test of pass and authentication system are substantially perfect, and Bluetooth technology at this moment starts to be commonly used；
（4）2005 to 2010, Bluetooth technology was quite ripe, and the distance of information transmission is elongated, and transmission speed is
The volume of 1.8Mb/s, Bluetooth chip also become very little, and the safety simultaneously for data transmission is more paid attention to, and clock synchronization is matched in connection
Need input password, agreement is safer, and Bluetooth technology is not limited solely to mobile phone, PDA, initially enter digital camera etc. other
In non-communicating electronic product；
（5）2010 so far, and Bluetooth SIG have issued latest edition 4.0, and bluetooth Jian begins to pass to low-power consumption and at a distance
Defeated direction is developed, and transmission data is more stable, is also less susceptible to by other signal interferences.Bluetooth technology has become the primary short distance in the whole world
Mode from wireless transmission, Bluetooth technology almost spread over all electronic products.
Patent of invention content
The invention patent relates to a kind of design of the anti-loss device based on Bluetooth technology, design principle of the invention as shown in Figure 1, its
Middle sensor is placed on anti-lost article or child, and handheld device is carried by owner, between sensor and handheld device
By Bluetooth communication, when sensor and handheld device exceed by one it is scheduled apart from when, handheld device will alarm, to give people
Alert, on peripheral hardware, sensor needs toggle switch, voltage indicator, handheld device need one to code key, a buzzing
Device mute button confirms pairing beacon lamp, voltage indicator lamp.
Description of the drawings
Fig. 1：Anti-loss device schematic diagram.
Fig. 2：The overall construction drawing of hardware.
Fig. 3：The overall construction drawing of software.
Fig. 4：The circuit diagram of power module.
Fig. 5：The circuit diagram of buzzer.
Fig. 6：Sensor indicator light circuit.
Fig. 7：Handheld device indicator light circuit.
Specific implementation mode
In order to make the object, technical solution and advantage of patent of the present invention be more clearly understood, below in conjunction with attached drawing and implementation
Example, is further elaborated patent of the present invention.It should be appreciated that specific embodiment described herein is only used to explain
Patent of the present invention, is not intended to limit the present invention patent.
The invention patent relates to a kind of design of the anti-loss device based on Bluetooth technology, design principle of the invention such as Fig. 1 institutes
Show, wherein sensor is placed on anti-lost article or child, and handheld device is carried by owner, in sensor and handheld device
Between by Bluetooth communication, when sensor and handheld device exceed by one it is scheduled apart from when, handheld device will alarm, to
Give people's warning, on peripheral hardware, sensor needs toggle switch, voltage indicator, handheld device need one to code key, one
Buzzer mute button confirms pairing beacon lamp, voltage indicator lamp.
Further, the anti-loss device needs designed by the present invention are met the following requirements：
（1）Master-slave equipment is required for low-power consumption, i.e., them can be made to work no less than one month with one piece of lithium coin cells；
（2）Communication capacity is stablized, and since the product is related to the property of people, the security problems of children need stable lead to
Letter ability is to ensure the safe transmission of information between sensor and handheld device；
（3）It is at low cost, since these products are not daily necessities, and the phenomenon that product is lost often is had, in order to have
It is easier to be acceptable to the market in the future conducive to equipment, so to want cost stringent control.
Further, the function of sensor of the invention：
（1）After the power is turned on, battery is monitored, if voltage is normal, under-voltage indicator light goes out；If battery undervoltage, under-voltage indicator light dodges
It is bright；
（2）When long-time button, wireless communication function is opened, original unpaired message all empties, such as handheld device requirement
Match clock synchronization with it, write-in pairing password is verified, will be with its successful matching；
（3）After successful matching, with the 20ms that wirelessly works, the frequency of wireless suspend mode 180ms works.1200 baud of traffic rate
Rate should have apparent decaying with handheld device range up to signal strength at 2 meters, 3 meters, and 4 meters are communication failures.
Further, the function of handheld device of the invention：
（1）Job requirement is identical as working frequency as sensor requirements；
（2）The data that sensor is sent are received every time, can check its signal strength, if without signal strength, buzzer hair
Go out sound.If again return to, the sound that buzzer is sent out will disappear.
Further, handheld device of the invention needs alarm module, power supply module, power supply, button and instruction
Lamp module, structure are as shown in Figure 2.Sensor is essentially identical with handheld device, does not need buzzer module exactly.
Further, in low-power consumption bluetooth equipment, the software of host machine part and the software of controller part have the present invention
Difference in logic, as shown in Figure 3.These softwares can be put on one device, can also be stored in multiple equipment, in list
In device configuration, an equipment is only needed, it is exactly to use that application software looks for upper execution, the design in BLE sections and agreement
This configuration.
Further, the present invention selects power supply of the button cell of 1 3.6 volts of section as system, and the circuit of power module is such as
Shown in Fig. 4, the operating voltage of 5V is converted the voltage into using boost module.
Further, the circuit of buzzer of the invention is as shown in figure 5, buzzer will send out sound when exporting high level
Sound.
Further, the present invention needs two buttons, K1 to realize the wireless startup of equipment, when realizing abnormal, presses
K2 makes device reset.And sensor and handheld device are different in terms of indicator light, sensor only needs an indicator light to indicate
Whether equipment has wirelessly communicated, as shown in Figure 6.And handheld device also needs to the success that an indicator light indicates pairing, circuit such as Fig. 7
It is shown.
Further, in the hardware design of this anti-loss device, circuit can be divided into radio circuit, analog circuit and number
Three kinds of circuit, these three circuits using different working frequencies due to that can be interfered with each other, so being arranged to the anti-interference of hardware
It is essential to apply.In addition, the working frequency of radio circuit is to be not required to application with regard to workable 2.4GHZ, therefore to anti-interference
Measure it is also particularly important.The present invention improves the stability of system by using following measure：
（1）For the interference that high-frequency circuit high frequency signal generates, the method that the design uses the even dress capacitance of attachment, simultaneously to the greatest extent
Amount makes the distance of power supply and capacitance most short；
（2）The interference of one system has plenty of because of spread of voltage, and it is most important to disturb measure to anti-the thousand of power supply.This hair
The bright method for using lithium battery power supply, while voltage stabilizing chip is added, to prevent the interference of power supply；
（3）With the rapid development of electronic technology, chip becomes smaller and smaller, to which equipment also becomes very exquisite, this is just to cloth
Line proposes high requirement, in case the interference of the unreasonable generation because of wiring, keeps system unstable.The measure that the design uses
It is：1. the wiring of high-frequency electronic component is short as far as possible；2. the conducting wire of input/output terminal will be located remotely from each other as possible；3. in certain members
When having larger potential difference between device or conducting wire, the distance between they are increased as far as possible；4. by going for electric current
Road and circuit are formed by loop, its area wants as small as possible；5. it is smaller with current signal to easy to produce circuit that thousand disturb
Circuit separately connects up；
（4）The blocking of extraneous signal can also use isolation technology, and the design is radio circuit, analog circuit and digital circuit point
It is anti-interference to improve at 3 regions.
Further, if realizing the low compatibility of software and hardware, software can be answered without change or modification
Upgraded with facilitating the transformation of hardware for other a small number of hardware, migration, software migration.Hardware abstraction layer, it is for being abstracted
Various hardware resources, to notify software.Its effect defines hardware resource head similar to embedded system device driver
File.It is simple to change after the completion of new hardware platform, without changing protocol stack in other assemblies and application program.
Further, 51 microcontroller simple process programs of the invention：
if( P1 = 0x00)
P2 = 0xFE;
Bluetooth module, which is powered, to be started；
if(P1 = 0x01)
P2 = 0xFD;
Overlength distance is alarmed；
if(P1 = 0x02)
P2 = 0xFB;
Manually control alarm；
Bluetooth anti-losing device uses band processing method to be assembled, and reduces the volume of device and the unstability welded manually.
The foregoing is merely the preferred embodiments of patent of the present invention, are not intended to limit the invention patent, all at this
All any modification, equivalent and improvement etc., should be included in patent of the present invention made by within the spirit and principle of patent of invention
Protection domain within.
Claims (5)
1. the invention patent relates to a kind of design of the anti-loss device based on Bluetooth technology, sensor of the invention is placed on anti-lost
With article or child, handheld device is carried by owner, by Bluetooth communication between sensor and handheld device, works as sensor
With handheld device exceed by one it is scheduled apart from when, handheld device will alarm, to give people warning.
2. a kind of design of anti-loss device based on Bluetooth technology according to claim 1, on peripheral hardware, sensor needs to dial
Code switch, voltage indicator.
3. a kind of design of anti-loss device based on Bluetooth technology according to claim 1, on peripheral hardware, handheld device needs
One to code key, a buzzer mute button, confirmation pairing beacon lamp, voltage indicator lamp.
4. a kind of design of anti-loss device based on Bluetooth technology according to claim 1, handheld device of the invention needs
There are alarm module, power supply module, power supply, button and indicating lamp module.
5. a kind of design of anti-loss device based on Bluetooth technology according to claim 1, the present invention selects 1 3.6 volts of section
Power supply of the button cell as system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710011023.6A CN108280961A (en) | 2017-01-06 | 2017-01-06 | A kind of design of the anti-loss device based on Bluetooth technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710011023.6A CN108280961A (en) | 2017-01-06 | 2017-01-06 | A kind of design of the anti-loss device based on Bluetooth technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108280961A true CN108280961A (en) | 2018-07-13 |
Family
ID=62801035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710011023.6A Pending CN108280961A (en) | 2017-01-06 | 2017-01-06 | A kind of design of the anti-loss device based on Bluetooth technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106954181A (en) * | 2017-03-02 | 2017-07-14 | 长沙开雅电子科技有限公司 | A kind of anti-loss device of application Bluetooth technology |
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| US20090207014A1 (en) * | 2008-02-20 | 2009-08-20 | Mourad Ben Ayed | Systems for monitoring proximity to prevent loss or to assist recovery |
| US20110076949A1 (en) * | 2005-03-04 | 2011-03-31 | Broadcom Corporation | Location system for bluetooth enabled devices |
| CN102883068A (en) * | 2012-10-12 | 2013-01-16 | 歌尔声学股份有限公司 | Bluetooth mobile terminal and Bluetooth alarm system |
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Patent Citations (7)
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| US20110076949A1 (en) * | 2005-03-04 | 2011-03-31 | Broadcom Corporation | Location system for bluetooth enabled devices |
| CN101188645A (en) * | 2006-11-17 | 2008-05-28 | 英华达(上海)电子有限公司 | Theft-prevention alarming device and method for handheld device |
| US20090207014A1 (en) * | 2008-02-20 | 2009-08-20 | Mourad Ben Ayed | Systems for monitoring proximity to prevent loss or to assist recovery |
| CN102938168A (en) * | 2012-09-25 | 2013-02-20 | 昶翔科技股份有限公司 | Bluetooth vehicle control system and method for managing vehicle by using bluetooth system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106954181A (en) * | 2017-03-02 | 2017-07-14 | 长沙开雅电子科技有限公司 | A kind of anti-loss device of application Bluetooth technology |
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| PB01 | Publication | ||
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Application publication date: 20180713 |