CN104905944A - Portable type alarming and blind guide system with low power consumption - Google Patents
Portable type alarming and blind guide system with low power consumption Download PDFInfo
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- CN104905944A CN104905944A CN201510389881.5A CN201510389881A CN104905944A CN 104905944 A CN104905944 A CN 104905944A CN 201510389881 A CN201510389881 A CN 201510389881A CN 104905944 A CN104905944 A CN 104905944A
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Abstract
The invention relates to a portable type alarming and blind guide system with low power consumption. The portable type alarming and blind guide system is characterized by comprising main equipment, wherein the main equipment comprises a main single chip microcomputer, wherein the main single chip microcomputer is connected with an ultrasonic wave distance measuring module, a three-axis acceleration sensor, a voice alarm, a vibration alarm and a man-machine interface respectively. The portable type alarming and blind guide system with the low power consumption adopts a low power consumption design and has the advantages of complete functions, high precision, simplicity and convenience for operation and low cost; the price is suitable for common blind people with low investment to consume and the better blind guide effect can be realized.
Description
Technical field
The present invention relates to a kind of hand-held warning blind guiding system of the low-power consumption based on Internet of Things.
Background technology
World Health Organization (WHO) estimates that there is blind person 4,000 ten thousand to 4,500 ten thousand in the whole world, low visual acuity is 3 times of blind person, about 1.4 hundred million people, wherein 75% that is patient more than 100,000,000 can by operation and correction of refractive errors be recovered or be improved vision, the low visual acuity needs of patients low visual acuity of 25% is still had to keep healthy, as visual acuity aid and visual rehabilitation instrument etc. need be worn.China once carried out status investigation with visual disabilities in the eighties in last century.Result shows, and there is patient with visual disabilities nearly 1,300 ten thousand in China, wherein blind person about 5,500,000, low visual acuity about 7,500,000.The Etiological of less than 14 years old child blind persons and low visual acuity is congenital hereditary oculopathy, as congenital cataract, congenital microphthalmus microcornea, retinitis pigmentosa, albinism, optic atrophy etc.Within more than 60 years old, old people's Etiological that is blind or low visual acuity is cataract.China there will be new blind person about 450,000 every year, low visual acuity 1,350,000, namely about per minutely just there will be 1 blind person, 3 low visual acuity patients.If do not taken effective measures, to the year two thousand twenty China number with visual disabilities by being current 4 times, be about to reach more than 5,000 ten thousand.
The increase of blind person's quantity will become serious public health and social problem.Therefore, be badly in need of the guide work that development is applicable to their trip auxiliary, improve the current life style of blind person, facilitate them to go on a journey.
Summary of the invention
The object of this invention is to provide a kind of hand-held warning blind guiding system of low-power consumption, the people of assisting blind or visual disturbance can to go out walking, realize good guide effect.
A kind of hand-held warning blind guiding system of low-power consumption, its special feature is: comprise main equipment, this main equipment comprises host scm, and this host scm is connected with ultrasonic distance measuring module, 3-axis acceleration sensor, phonetic alarm, vibrations alarm and man machine interface respectively.
Wherein host scm is also connected with temperature sensor, optical sensor and main wireless communication module respectively.
Wherein also comprise with described main equipment wireless connections from equipment, should comprise from single-chip microcomputer from equipment, should be connected respectively with from wireless communication module and PC from single-chip microcomputer.
The hand-held warning blind guiding system of low-power consumption of the present invention have employed low power dissipation design, and function is complete, and precision is high, easy and simple to handle, and cost is low, and price is applicable to common blind person's consumption of low income, and can realize comparatively good guide effect.
Accompanying drawing explanation
Accompanying drawing 1 is logic theory block diagram of the present invention.
Detailed description of the invention
As shown in Figure 1, the invention provides a kind of hand-held warning blind guiding system of low-power consumption, form by main equipment with from equipment, wherein main equipment comprises host scm, and this host scm is connected with ultrasonic distance measuring module, 3-axis acceleration sensor, temperature sensor, optical sensor, main wireless communication module, phonetic alarm, vibrations alarm and man machine interface respectively; Wherein comprise from single-chip microcomputer from equipment, should be connected respectively with from wireless communication module and PC from single-chip microcomputer.
The hand-held warning blind guiding system of low-power consumption of the present invention, comprise main equipment and from equipment, wherein, main equipment uses by needing the people of guide, completes the perception of obstacle distance angle, voice message and setting, vibration prompting, temperature-sensitive degree and the function such as light exposure measurement, wireless telecommunications; Used from equipment by guardian, the information such as current detection range, temperature, illumination that main equipment is transmitted by 433MHz wireless signal can be received, and by main equipment without the need to applying for that free frequency range 433MHz wireless reception of signals intensity RSSI value estimates the distance of master and slave equipment room.
Below in conjunction with accompanying drawing, the present invention is further detailed explanation:
Wherein host scm is the STM32F103 series monolithic of ARM a new generation framework Cortex-M3 kernel.Described main equipment obstacle distance and angle perception use ultrasound wave to find range, 3cm can be reached in conjunction with temperature-compensating range accuracy, use TTL RS 232 chip electrical level transferring chip, and adopt multi-chip to drive the mode of ultrasonic emitting probe, detection range is more than 6m at least.And adopt three-axis acceleration transducer chip ADXL345 disturbance of perception thing and the upper and lower angle information of ultrasound wave.Wherein main equipment vibration reminding, use pulsewidth modulation (PWM) mode of single-chip microcomputer intervalometer to control small low-consumption vibrating motor and produce different oscillation intensity, when front has barrier in detection range, drive motors rotates to produce vibrating effect, from obstacle distance more close to then vibrating effect is stronger, when weakening away from vibrating effect during barrier.
Wherein wireless telecommunications, use without the need to applying for that free frequency range 433MHz wireless data sends and accepts, its communication distance is far away, low in energy consumption and System's composition simple, therefore selects this frequency to carry out data interaction and the communication of master and slave equipment.Select SI4463 chip and appropriate design, ward communication distance can reach 2000 meters.Wherein main equipment voice message and setting, prompting and the setting of main equipment have coordinated by voice and button, use dedicated voice chip VS1003 to complete decoding and the broadcasting of MP3 format voice document, select TF card to carry out voice document storage.Described main equipment illumination induction, be sent to from equipment by wireless telecommunications by intensity of illumination data, guardian can understand the environmental information residing for blind person.
Wherein from equipment, its process core uses the single-chip microcomputer of the same type with main equipment, and the Various types of data receiving wireless chip reception carries out processing and showing, and is estimated the distance of master and slave equipment room by signal intensity RSSI value; Transmit configuration signal to 433MHz communication chip to complete Remote configuration.Wherein from equipment its without the need to applying for free frequency range 433MHz wireless telecommunications, select SI4463 chip, peripheral circuit reasonable in design, install 433MHz antenna additional, strengthen log as far as possible.Receive the information such as current detection range, temperature, illumination, signal intensity RSSI value that main equipment is transmitted by 433MHz wireless signal, complete the Remote configuration to main equipment.Wherein from device data display, microcontroller serial port can be used to be connected to PC RS232 serial ports and to check data message, and completing configuration and checking of task.
Certainly, in the simplest situations, system of the present invention also can carry out only by the ultrasonic distance measuring module in main equipment, 3-axis acceleration sensor the space motion state finding range and judge holder, thus reported to the police by phonetic alarm, vibrations alarm where necessary, certainly also adjust alarm parameters by man machine interface, required control method, software etc. belong to existing routine techniques.
Claims (3)
1. the hand-held warning blind guiding system of a low-power consumption, it is characterized in that: comprise main equipment, this main equipment comprises host scm, and this host scm is connected with ultrasonic distance measuring module, 3-axis acceleration sensor, phonetic alarm, vibrations alarm and man machine interface respectively.
2. the hand-held warning blind guiding system of low-power consumption as claimed in claim 1, is characterized in that: wherein host scm is also connected with temperature sensor, optical sensor and main wireless communication module respectively.
3. the hand-held warning blind guiding system of low-power consumption as claimed in claim 1 or 2, it is characterized in that: wherein also comprise with described main equipment wireless connections from equipment, should comprise from single-chip microcomputer from equipment, should be connected respectively with from wireless communication module and PC from single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510389881.5A CN104905944A (en) | 2015-07-06 | 2015-07-06 | Portable type alarming and blind guide system with low power consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510389881.5A CN104905944A (en) | 2015-07-06 | 2015-07-06 | Portable type alarming and blind guide system with low power consumption |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104905944A true CN104905944A (en) | 2015-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510389881.5A Pending CN104905944A (en) | 2015-07-06 | 2015-07-06 | Portable type alarming and blind guide system with low power consumption |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104905944A (en) |
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2015
- 2015-07-06 CN CN201510389881.5A patent/CN104905944A/en active Pending
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150916 |
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| RJ01 | Rejection of invention patent application after publication |