CN115009402A - Bicycle blind area monitoring system - Google Patents
Bicycle blind area monitoring system Download PDFInfo
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- CN115009402A CN115009402A CN202210829096.7A CN202210829096A CN115009402A CN 115009402 A CN115009402 A CN 115009402A CN 202210829096 A CN202210829096 A CN 202210829096A CN 115009402 A CN115009402 A CN 115009402A
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- detection sensor
- blind spot
- distance
- pulse
- spot detection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J3/00—Acoustic signal devices; Arrangement of such devices on cycles
- B62J3/10—Electrical devices
- B62J3/12—Buzzers; Horns with electrically driven airflow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J50/00—Arrangements specially adapted for use on cycles not provided for in main groups B62J1/00 - B62J45/00
- B62J50/20—Information-providing devices
- B62J50/21—Information-providing devices intended to provide information to rider or passenger
- B62J50/22—Information-providing devices intended to provide information to rider or passenger electronic, e.g. displays
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a bicycle blind area monitoring system which comprises a blind point detection sensor host and a distance display, wherein the blind point detection sensor host is arranged at the rear part of a saddle and is integrated with three groups of blind point detection sensor integrated probes, and the blind point detection sensor host is connected to the distance display through a Bluetooth wireless technology. The invention can detect three visual blind areas right behind and left behind in real time during riding, replaces people to look over the road situation behind, informs the blind areas of a rider whether objects are approaching through a display and acousto-optic alarm, reminds the rider to pay attention to avoiding, can remind the approaching objects to avoid, ensures riding safety and can avoid potential safety hazards.
Description
Technical Field
The invention relates to the technical field of blind area monitoring, in particular to a bicycle blind area monitoring system.
Background
At present, bicycles/electric vehicles have vision blind areas, particularly when changing lanes, people need to go back to check the conditions of the rear road, even some people directly change lanes without seeing the conditions of the rear road, and therefore traffic accidents happen frequently.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a bicycle blind area monitoring system.
The blind area monitoring system for the bicycle comprises a blind point detection sensor host and a distance display, wherein the blind point detection sensor host is installed at the rear part of a saddle and integrates three groups of blind point detection sensor integrated probes, and the blind point detection sensor host is connected to the distance display through a Bluetooth wireless technology.
Preferably, the blind spot detection sensor integrated probe of the blind spot detection sensor host is integrated on the tail lamp.
Preferably, the blind spot detection sensor host works as follows:
a string of high-frequency narrow-pulse electromagnetic waves with a certain repetition period are emitted to three different directions behind the bicycle;
if a proximity object exists in the electromagnetic wave propagation path, the blind spot detection sensor can receive the echo reflected by the proximity object;
since the echo signal travels back and forth between the blind spot detection sensor and the approaching object, it will lag the transmit pulse by a time.
Preferably, the energy propagated by the electromagnetic wave is propagated at the speed of light, and the distance of propagation is equal to the speed of light multiplied by the time interval, that is, the distance of propagation is R when the distance of approach to the object is taken as R
R＝ct r /2 (2-1)
(2-1) formula:
r is the distance from the approaching object to the blind spot detection sensor, and the unit is m; t is t r The time interval of the electromagnetic wave between the approaching object and the blind spot detection sensor is s; c is the velocity of propagation in air, about: c 3.0 x 10 8 m/s；
Because the electromagnetic wave is fast in propagation speed, the time unit for the blind spot detection sensor is mus, the echo pulse lags behind the transmitted pulse by one microsecond, and the corresponding distance R of the approaching object is R ═ ct r /2；
From the above analysis, it can be known that the measurement of the distance of the approaching object is to accurately determine the delay time t of the echo of the approaching object relative to the pulse of the transmitted signal r Calculating the distance between the approaching object and the rider according to the formula (2-1);
obtaining t r The method adopts digital ranging, the digital ranging only needs to record the number n of counting pulses when the echo pulse arrives, and the delay time of the echo pulse relative to the emission pulse can be calculated according to the repetition period T of the counting pulses
t r ＝nT (2-2)
T is a known value, and T is measured r Actually, it becomes to measure the number n of count pulses at the arrival of the echo pulse, and in order to reduce the error, the count pulse generator and the electromagnetic wave timer trigger pulse are synchronized in time, and the relationship between the approaching object distance R and the number n of count pulses is:
n＝t r f＝(2R/c)f (2-3)
R＝cn/2f (2-4)
(2-4) wherein f is the repetition frequency of the counting pulse, and in the digital distance measurement, the measurement of the distance R to the object is converted into the number of the measuring pulses n, thereby changing the continuous amount of the time tr into the discrete number of the pulses, and when the target echo peak value appears between the nth and n +1 counting pulses, a corresponding error is generated, and from the viewpoint of improving the measurement accuracy and reducing the error, the higher the frequency f of the counting pulse, the better, and a high-speed digital device is adopted to achieve the above requirements.
Preferably, after sensor signals in three different directions behind the bicycle are transmitted to the central control unit low-power-consumption Bluetooth system on chip for distance measurement analysis, the analyzed distance and direction information in the three directions are finally wirelessly transmitted to the distance display of the second part through Bluetooth for display.
According to the bicycle blind area monitoring system, three visual blind areas right behind the left and right during riding can be detected in real time, a substitute person needs to go back to check the rear road condition, whether an object is close to the blind areas is informed through a display and acousto-optic alarm, a rider is reminded of avoiding the blind areas, the close object can be reminded of avoiding the blind areas, riding safety is guaranteed, and potential safety hazards can be avoided.
Drawings
FIG. 1 is a schematic view of a bicycle blind area monitoring system in accordance with the present invention;
fig. 2 is a schematic transmission diagram of the bicycle blind area monitoring system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-2, a bicycle blind area monitoring system comprises a blind spot detection sensor host and a distance display, wherein the blind spot detection sensor host is arranged at the rear part of a saddle and can detect three visual blind areas right behind the left and right sides in real time, the effective detection distance is at most 15 meters, the blind spot detection sensor host is integrated with three groups of blind spot detection sensor integrated probes, the blind spot detection sensor host is connected to the distance display by a Bluetooth wireless technology, detected information is processed by a system blind area algorithm on a low-power-consumption Bluetooth chip and is wirelessly transmitted to the distance display of a second part by Bluetooth, the distance display displays the distance of an approaching object at the middle part by the received information, the two side parts display that the approaching object is in the visual angle blind area, and the distance of the approaching object is less than 5 meters and can control to start the alarm to perform acousto-optic alarm, the bicycle can remind a rider of avoiding, can also remind an object close to the rider of avoiding, guarantees riding safety, and can avoid potential safety hazards.
According to the invention, the blind spot detection sensor integrated probe of the blind spot detection sensor host is integrated on the tail lamp, when the bicycle runs normally, the tail lamp is normally on, and when a brake is detected, the tail lamp changes from being normally on to flashing to remind a driver of a vehicle coming behind, so that the riding safety is improved, and the accident rate is reduced.
In the invention, the working process of the blind spot detection sensor host machine is as follows:
a string of high-frequency narrow-pulse electromagnetic waves with a certain repetition period are emitted to three different directions behind the bicycle;
if a proximity object exists in the electromagnetic wave propagation path, the blind spot detection sensor can receive the echo reflected by the proximity object;
since the echo signal travels to and from the blind spot detection sensor and the approaching object, it will lag the transmit pulse by a time.
In the invention, the energy propagated by the electromagnetic wave is propagated at the speed of light, and the distance of the electromagnetic wave close to an object is R, so that the propagated distance is equal to the speed of light multiplied by the time interval, namely
R＝ct r /2 (2-1)
(2-1) formula:
r is the distance from the approaching object to the blind spot detection sensor, and the unit is m; t is t r The time interval of the electromagnetic wave between the approaching object and the blind spot detection sensor is s; c is the velocity of propagation in air, about: c 3.0 x 10 8 m/s；
Because the electromagnetic wave is fast in propagation speed, the time unit for the blind spot detection sensor is mus, the echo pulse lags behind the transmitted pulse by one microsecond, and the corresponding distance R of the approaching object is R ═ ct r /2；
From the above analysis, it can be known that the measurement of the distance of the approaching object is to accurately determine the delay time t of the echo of the approaching object relative to the pulse of the transmitted signal r Calculating the distance between the approaching object and the rider according to the formula (2-1);
obtaining t r The method adopts digital ranging, the digital ranging only needs to record the number n of counting pulses when the echo pulse arrives, and the delay time of the echo pulse relative to the emission pulse can be calculated according to the repetition period T of the counting pulses
t r ＝nT (2-2)
T is a known value, and T is measured r Actually, the number n of counting pulses at the arrival of the measuring echo pulse is changed, and in order to reduce the error, a counting pulse generator and an electromagnetic wave timer trigger pulseThe punches are synchronized in time, the relationship between the approaching object distance R and the number of counted pulses n is:
n＝t r f＝(2R/c)f (2-3)
R＝cn/2f (2-4)
(2-4) wherein f is the repetition frequency of the counting pulse, and in the digital distance measurement, the measurement of the distance R to the object is converted into the number of the measuring pulses n, thereby changing the continuous amount of the time tr into a discrete number of pulses, and when the target echo peak value appears between the nth and n +1 counting pulses, a corresponding error occurs, and from the viewpoint of improving the measurement accuracy and reducing the error, the higher the frequency f of the counting pulse is, the better the frequency f of the counting pulse is, and a high-speed digital device is used to achieve the above requirements.
In the invention, after sensor signals in three different directions at the rear of the bicycle are transmitted to the low-power-consumption Bluetooth system-on-chip of the central control unit for distance measurement analysis, the analyzed distance and direction information in the three directions are finally wirelessly transmitted to the distance display of the second part for display through Bluetooth.
The invention comprises the following steps: the bicycle blind area monitoring system takes a low-power-consumption Bluetooth system-on-chip as a central control unit, three groups of blind point detection sensor integrated probes and a distance display are expanded, the blind point detection probes are installed at the tail part of a bicycle/electric vehicle in a plane fan-shaped mode, a proximity object is detected by utilizing the distance measurement principle of the blind point detection probes, the distance of the proximity object is detected, the specific direction information at the rear part of the bicycle/electric vehicle passes through a Bluetooth mode and is uploaded to the display fixed on the handlebar of the bicycle/electric vehicle, the display informs a rider in a graph and color mode, and sound alarm is given when the distance of the proximity object is close to the display, so that a driver is prompted to deal with collision risks, through the application of the bicycle/electric vehicle blind area monitoring system, the active safety of the bicycle/electric vehicle can be effectively improved, and the accident probability is reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. Bicycle blind area monitoring system, its characterized in that, including blind spot detection sensor host computer and distance display, the blind spot detection sensor host computer is installed at the saddle rear portion, and the integrated three blind spot detection sensor integral type probes of group of blind spot detection sensor host computer, the blind spot detection sensor host computer is connected to distance display through bluetooth wireless technology.
2. The bicycle blind spot monitoring system according to claim 1, wherein the blind spot detection sensor integrated probe of the blind spot detection sensor host is integrated on a tail light.
3. The bicycle blind spot monitoring system according to claim 1, wherein the blind spot detection sensor host machine operates as follows:
a string of high-frequency narrow-pulse electromagnetic waves with a certain repetition period are emitted to three different directions behind the bicycle;
if a proximity object exists in the electromagnetic wave propagation path, the blind spot detection sensor can receive the echo reflected by the proximity object;
since the echo signal travels back and forth between the blind spot detection sensor and the approaching object, it will lag the transmit pulse by a time.
4. The bicycle blind spot monitoring system according to claim 3, wherein the energy propagated by the electromagnetic wave is propagated at the speed of light, and the distance propagated by the electromagnetic wave is equal to the speed of light multiplied by the time interval, when the distance of the object is R
R＝ct r /2 (2-1)
(2-1) formula:
r is the distance from the approaching object to the blind spot detection sensor, and the unit is m; t is t r The time interval of the electromagnetic wave between the approaching object and the blind spot detection sensor is s; c is the velocity of propagation in air, about: c 3.0 x 10 8 m/s；
Because the electromagnetic wave is fast in propagation speed, the time unit for the blind spot detection sensor is mus, the echo pulse lags behind the transmitted pulse by one microsecond, and the corresponding distance R of the approaching object is R ═ ct r /2；
From the above analysis, it can be known that the measurement of the distance of the approaching object is to accurately determine the delay time t of the echo of the approaching object relative to the pulse of the transmitted signal r Calculating the distance between the approaching object and the rider according to the formula (2-1);
obtaining t r The method adopts digital ranging, the digital ranging only needs to record the number n of counting pulses when the echo pulse arrives, and the delay time of the echo pulse relative to the emission pulse can be calculated according to the repetition period T of the counting pulses
t r ＝nT (2-2)
T is a known value, and T is measured r In practice, to become a measure of the number n of counting pulses at the arrival of an echo pulse, the counting pulse generator and the electromagnetic wave timer trigger pulse are synchronized in time in order to reduce errors, the relationship between the approaching object distance R and the number n of counting pulses is:
n＝t r f＝(2R/c)f (2-3)
R＝cn/2f (2-4)
(2-4) wherein f is the repetition frequency of the counting pulse, and in the digital distance measurement, the measurement of the distance R to the object is converted into the number of the measuring pulses n, thereby changing the continuous amount of the time tr into the discrete number of the pulses, and when the target echo peak value appears between the nth and n +1 counting pulses, a corresponding error is generated, and from the viewpoint of improving the measurement accuracy and reducing the error, the higher the frequency f of the counting pulse, the better, and a high-speed digital device is adopted to achieve the above requirements.
5. The bicycle blind spot monitoring system according to claim 3, wherein after the signals of the sensors in three different directions behind the bicycle are transmitted to the central control unit Bluetooth Low energy chip for distance measurement analysis, the analyzed distance and direction information in the three directions are finally transmitted to the distance display of the second part through Bluetooth in a wireless manner for display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210829096.7A CN115009402A (en) | 2022-07-15 | 2022-07-15 | Bicycle blind area monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210829096.7A CN115009402A (en) | 2022-07-15 | 2022-07-15 | Bicycle blind area monitoring system |
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| CN115009402A true CN115009402A (en) | 2022-09-06 |
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| CN202210829096.7A Pending CN115009402A (en) | 2022-07-15 | 2022-07-15 | Bicycle blind area monitoring system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607154A (en) * | 2002-10-30 | 2005-04-20 | 三洋电机株式会社 | Electric bicycle |
| CN201188129Y (en) * | 2007-12-14 | 2009-01-28 | 余晓鹏 | Alarm device for detecting automobile blind spot |
| CN204821834U (en) * | 2015-08-06 | 2015-12-02 | 深圳前海零距物联网科技有限公司 | From driving safety suggestion device based on radar range finding |
| CN105539695A (en) * | 2016-02-24 | 2016-05-04 | 杭州骑客智能科技有限公司 | Man-machine interactive sport vehicle |
| CN109143262A (en) * | 2018-07-27 | 2019-01-04 | 南京威尔瑞智能科技有限公司 | Pilotless automobile automatic control device and its control method |
| US20190152389A1 (en) * | 2017-11-21 | 2019-05-23 | Shimano Inc. | Controller and control system |
| US20220063751A1 (en) * | 2018-09-13 | 2022-03-03 | Jing Yuan ZHOU | Electric unicycle with manual control |
-
2022
- 2022-07-15 CN CN202210829096.7A patent/CN115009402A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607154A (en) * | 2002-10-30 | 2005-04-20 | 三洋电机株式会社 | Electric bicycle |
| CN201188129Y (en) * | 2007-12-14 | 2009-01-28 | 余晓鹏 | Alarm device for detecting automobile blind spot |
| CN204821834U (en) * | 2015-08-06 | 2015-12-02 | 深圳前海零距物联网科技有限公司 | From driving safety suggestion device based on radar range finding |
| CN105539695A (en) * | 2016-02-24 | 2016-05-04 | 杭州骑客智能科技有限公司 | Man-machine interactive sport vehicle |
| US20190152389A1 (en) * | 2017-11-21 | 2019-05-23 | Shimano Inc. | Controller and control system |
| CN109143262A (en) * | 2018-07-27 | 2019-01-04 | 南京威尔瑞智能科技有限公司 | Pilotless automobile automatic control device and its control method |
| US20220063751A1 (en) * | 2018-09-13 | 2022-03-03 | Jing Yuan ZHOU | Electric unicycle with manual control |
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