CN217040678U - Auxiliary travel system for visually impaired people based on ultra-wideband - Google Patents
Auxiliary travel system for visually impaired people based on ultra-wideband Download PDFInfo
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- CN217040678U CN217040678U CN202123270845.7U CN202123270845U CN217040678U CN 217040678 U CN217040678 U CN 217040678U CN 202123270845 U CN202123270845 U CN 202123270845U CN 217040678 U CN217040678 U CN 217040678U
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Abstract
The application provides a look barrier crowd assists travel system based on ultra wide band includes: the system comprises at least one blind road base station and at least one zebra crossing base station, wherein the at least one blind road base station and the at least one zebra crossing base station are respectively arranged as an active base station and a passive base station in proportion; at least one traffic light base station configured as an active base station; the base stations are integrated with UWB modules; the tag integrated with the UWB module is used for communicating with at least one blind road base station, at least one zebra crossing base station and at least one traffic light base station so as to acquire distance information between the terminal and the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station, and informs a user in a terminal vibration or voice broadcast mode. The utility model provides a look barrier crowd assists travel system based on ultra wide band through real-time distance or angular measurement and accurate positioning, provides route planning and action suggestion for looking barrier crowd's trip.
Description
Technical Field
The embodiment of the application relates to the technical field of ultra wide bands, in particular to an ultra wide band-based auxiliary travel system for visually impaired people.
Background
According to related reports, China is the country with the largest number of blind people in the world, the number of the blind people is about 830 ten thousand in 2020, the blind people accounts for about 21% of the total number of the world, the number of newly added blind people per year reaches more than 40 ten thousand, and in addition, the number of low-vision people exceeding ten million, namely, the visually impaired people reaches more than 1% of the total population in the country. The number of people with visual impairment in China is huge, but the national barrier-free construction standardization is insufficient, only 24% of blind people have independent traveling capacity according to statistics, and over 30% of people with visual impairment refuse to go out. According to the basic auxiliary appliance instruction directory (2020 edition) of disabled people, the guiding auxiliary appliances suitable for the visually impaired only have a blind stick, a compass for the blind and a voice navigation device, and are single in type and function; other auxiliary modes such as mobile terminal apps based on the guidance dog or volunteers for providing directions are currently difficult to match with huge market demands in China; in addition, the intelligent auxiliary equipment based on the computer vision technology is still limited by production technology threshold and product price for a long time and cannot be popularized on a large scale.
Emerging technologies such as ultrasonic phased array walking sticks, magnet blind tracks, mobile phones for the blind people and the like in recent years are often grouped together and do not really form an urban system, and the blind people do not really obtain convenient and safe travel experience when the mobile phones for the blind people are used independently. Ultra Wide Band (UWB) is a new non-carrier communication technology, which originates from a pulse communication technology applied to military radar communication equipment, and the working principle of the technology is to use a very narrow, nanosecond or even picosecond-level non-sinusoidal wave narrow pulse to realize communication and transmit data, and the technology is different from the traditional communication technology in that: ultra-wideband signals do not require a sinusoidal carrier but use a sequence of short energy pulses, with the pulses being spread over a range of frequencies by orthogonal frequency division modulation or direct sequencing. At present, the UWB technology has a very wide application prospect in many fields such as short-distance wireless local area networks, mobile target tracking, indoor positioning, and the like due to its characteristics of high transmission rate, large spatial capacity, small system power consumption, low equipment cost, good stability, and the like, and the advantages of strong multi-path resolution capability and strong anti-interference capability.
Therefore, the ultra-wideband-based aided traveling system for the visually impaired people is needed to solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a look barrier crowd assists travel system based on ultra wide band is provided, through real-time distance or angular measurement and accurate positioning to for looking barrier crowd's trip provide route planning and action suggestion.
The utility model discloses a solve above-mentioned technical problem and the technical scheme who adopts provides a look barrier crowd assists trip system based on ultra wide band, include:
the system comprises at least one blind road base station and at least one zebra crossing base station, wherein the at least one blind road base station and the at least one zebra crossing base station are respectively arranged as an active base station and a passive base station in proportion;
at least one traffic light base station configured as an active base station;
the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station are all integrated with UWB modules;
the tag integrated with the UWB module is used for communicating with the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station so as to obtain distance information between the terminal and the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station, and informs a user in a terminal vibration or voice broadcasting mode.
Preferably, the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station are powered by a battery, are powered by illumination or are integrated into an urban power grid for operation.
Preferably, the distance information comprises the geographical location, direction of travel and speed of travel of the end user.
Preferably, the system further comprises at least one billboard base station, which is arranged on the road section with the potential safety hazard, and the terminal is communicated with the at least one billboard base station to acquire the warning information.
Preferably, the road section with potential safety hazards comprises steps, a large-slope up-down slope, a high-frequency truck access opening and a parking lot access opening.
Preferably, the tag of the integrated UWB module is a mobile phone, a tablet, a laptop, or a wearable device.
Preferably, the integrated UWB module's label is the blind person stick, the blind person stick includes handle, cane pole, power module, UWB module, MCU calculation module, bluetooth module, gyroscope, accelerometer and reinforcing multi-antenna module.
Preferably, the UWB tag is used for communicating with the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station and completing a ranging or angle measurement function.
Preferably, the enhanced multi-antenna module is used for completing an angle measurement function when the AOA positioning is started.
Preferably, the bluetooth module is used for the terminal to connect with the user wearable device and communicate.
The utility model discloses contrast prior art has following beneficial effect: the utility model provides an auxiliary trip system of visual impairment crowd based on ultra wide band includes at least one blind road base station and at least one zebra crossing base station, at least one blind road base station and at least one zebra crossing base station set up as initiative base station and passive base station respectively in proportion; at least one traffic light base station configured as an active base station; the tag integrated with the UWB module is used for communicating with the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station so as to obtain distance information between the terminal and the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station, informs a user in a terminal vibration or voice broadcasting mode, and provides path planning and action suggestions for the travel of visually impaired people through real-time distance or angle measurement and accurate positioning.
Furthermore, the label of integrated UWB module is the blind person stick, the blind person stick includes handle, cane pole, power module, UWB module, MCU calculation module, bluetooth module, gyroscope, accelerometer and reinforcing multi-antenna module to use the blind person stick as the realization form of the label of integrated UWB module, provide more convenient service for looking out the barrier crowd's trip.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, but not all embodiments. For a person skilled in the art, other figures can also be obtained from these figures without inventive exercise. In the accompanying drawings, like reference numerals refer to like parts throughout.
Fig. 1 is a schematic diagram of a crossing in an ultra-wideband-based visually-impaired people-assisted travel system according to an embodiment of the present application;
fig. 2 is a schematic diagram of a blind road in an ultra-wideband-based visually-impaired people-assisted traveling system according to another embodiment of the present application;
fig. 3 is a schematic diagram of a blind person walking stick in an ultra-wideband-based visually-impaired people-assisted traveling system according to still another embodiment of the application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
The technical solution of the present application will be described in detail below with specific examples. These several specific embodiments may be combined with each other below, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Based on the problems of the existing assistant travel system, the embodiment of the application provides the assistant travel system for the visually impaired people based on the ultra-wideband, and the system provides path planning and action suggestions for the visually impaired people to travel through real-time distance or angle measurement and accurate positioning.
Referring now to fig. 1 and 2, the present application provides an ultra-wideband-based assisted-traveling system for visually impaired people, comprising: the system comprises at least one blind road base station and at least one zebra crossing base station, wherein the at least one blind road base station and the at least one zebra crossing base station are respectively arranged as an active base station and a passive base station in proportion; at least one traffic light base station configured as an active base station; the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station are all integrated with UWB modules; the tag integrated with the UWB module is used for communicating with the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station so as to obtain distance or angle information between the terminal and the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station, and informs a user in a terminal vibration or voice broadcasting mode.
In a specific implementation, a tag integrated with a UWB module is a user terminal, which is hereinafter referred to as a UWB tag for short, and may provide a precise distance measurement manner of Time of flight (TOF) between the UWB tag and the at least one blind spot base station, the at least one zebra crossing base station, and the at least one traffic light base station, and further implement a precise positioning manner of the UWB tag by using a Time of Arrival (TOA) of a Signal transmitted by the UWB tag at the base station, a Time Difference of Arrival (TDOA) of the transmitted Signal at the base station, an angle of Arrival (AOA) of the transmitted Signal at the base station, and a Received Signal Strength Indication (RSSI) of the transmitted Signal at the base station through a form of networking of plural base stations. The at least one blind road base station and the at least one zebra crossing base station support a distance measuring function, and the at least one traffic light base station supports a distance measuring function and an angle measuring function.
In specific implementation, the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station are powered by batteries, illumination or are integrated into an urban power grid for operation, so that the power consumption is not high. The active base station is set to be in an active sniffing state, the passive base station is set to be in a passive monitoring state, and the passive base station can further reduce energy consumption due to being in the passive monitoring state.
In a particular implementation, the distance or angle information includes a geographic location, a direction of travel, and a speed of travel of the end user. UWB range finding and angle measurement precision are high, at least one blind road basic station, at least one zebra crossing basic station and at least one traffic light basic station can dispose the height in a flexible way, avoids the label to be in sheltering from the state, therefore the performance is more stable.
In a specific implementation, the tag of the integrated UWB module is a mobile phone, a tablet, a laptop, or a wearable device.
The blind and low-vision users can conveniently carry the equipment and start the machine for use when going out. When a user goes out, the UWB tag is activated to enter an active sniffing state, and after the UWB tag enters a blind road and is communicated with an active base station on the blind road, the active base station activates other passive base stations in a certain range of the current road to enter a working state from a dormant state. Along with the advance of the user, a certain number of blind road base stations can be ensured to be capable of completing communication connection with the UWB tags at each moment, and when the signal strength of a certain base station is weakened due to too far distance, the base station which can still provide service is ensured to be online, and the next base station can enter the effective communication range in time.
When a user moves near an intersection, a traffic light base station firstly establishes communication connection with a UWB tag, after the distance and the angle from the UWB tag to the position of the user are measured, the distance from the user to the intersection zebra crossing is converted through triangular change and fed back, the user is informed in a terminal vibration or voice broadcasting mode, and the user is reminded whether the intersection in front of the user can pass through or not, and the user is reminded to slow down or wait for passing through.
After the user enters the intersection, the blind road base station is gradually disconnected, and the auxiliary service is continued on the line of the zebra crossing base station, so that the quality of the auxiliary service is ensured.
When the user decelerates to pass through the intersection, the traffic light base station can obtain more accurate measurement results for the distance measurement and the angle measurement of the low-speed moving target, so that higher-quality auxiliary service is provided.
When a user enters the measuring range of the base station at the other side of the road when the user moves to the center of the intersection, whether the base stations at the two sides of the road start the combined positioning or not can be determined according to the width degree of the road, so that the auxiliary positioning precision is further improved.
In a specific implementation, the system further comprises at least one billboard base station which is arranged on a road section with potential safety hazards, and the terminal is communicated with the at least one billboard base station to acquire warning information. The road section with potential safety hazards comprises steps, a large-gradient up-down ramp, a high-frequency truck access port and a parking lot access port.
Aiming at road sections or buildings with potential safety hazards such as steps, steep uphill and downhill slopes, high-frequency truck traffic ports, parking lot entrances and exits, the UWB base station is additionally arranged on the warning or warning board nearby the road sections or buildings, distance measurement or positioning service is provided for visually-impaired people nearby the roads, warning information is timely provided for users, and accidents such as falling down or rolling are avoided.
When designing park steps, city ramps, planning a truck traffic gate and a parking lot entrance and exit, a UWB base station is additionally arranged on a warning or billboard near the base station, the base station can determine whether to support an AOA angle measurement positioning function according to regional requirements, the height design and power supply mode of the base station is similar to that of a traffic light base station, and the base station is set to be in an active sniffing state;
when a user goes out, namely the tag is activated to enter an active sniffing state, when the user approaches the area with the risk potential, the UWB base station finds that the UWB tag or the UWB tag is connected with the UWB base station in advance, both the ranging and angle measuring functions can be initiated, and meanwhile, the UWB tag provides warning information for the user. After range finding and angle measurement end, if support the location, then feedback to the UWB label after accomplishing UWB label location on the upper strata, also can be sent UWB label department with range finding and angle measurement information by UWB basic station, accomplish the locate function by the UWB label by oneself.
After the UWB tag acquires the position information, the specific road condition information in front of the user is fed back in time. During the passing period of the user, the conditional electronic warning or billboard can provide warning information in the forms of light, sound and the like to prompt the front and the rear of the user, including vehicles such as bicycles, electric vehicles, cars, trucks and the like to avoid. After the user passes through the risk area, the UWB tag feeds back the user after monitoring that the distance exceeds a certain range or the UWB tag is positioned to be separated from the risk area, and then the connection with the warning or the billboard can be disconnected. After the warning or billboard base station is disconnected, the communication flow with the current UWB label is stopped, the active sniffing state is recovered, and the electronic warning or billboard can remove the warning information.
Referring now to fig. 3, in a specific implementation, the integrated UWB module tag is a blind person cane 30 that includes a handle 301, a cane shaft 302, a power module 303, a UWB module 304, an MCU (micro controller Unit) computing module 305, a bluetooth module 306, a gyroscope 307, an accelerometer 308, and an enhanced multi-antenna module 309.
In one implementation, the UWB module 304 is configured to communicate with the at least one blind spot base station, the at least one zebra crossing base station, and the at least one traffic light base station and perform ranging. The enhanced multi-antenna module 309 performs an angle measurement function and completes communication with the MCU calculation module 305 when AOA positioning is started in a partial scene.
In a specific implementation, a stick rod 302 is arranged below a handle 301 of the blind stick 30, and a chip integrating various functions is arranged at the joint of the stick rod 302 and the handle 301. When a user goes out and starts to use the blind person stick 30, the blind person stick 30 is first activated to start supplying power to the UWB module 304 and the like through the power supply module 303. The connection with the user's corresponding wearable device is achieved by bluetooth module 306. The UWB module 304 opens a communication connection with each UWB base station nearby, and completes the ranging and/or angle measurement function, and transmits the acquired ranging and/or angle measurement information to the MCU calculation module 305. The gyroscope 307 provides three-dimensional angle information of the pole 302 and the earth coordinate system in the current walking posture and transmits the three-dimensional angle information to the MCU calculation module 305, and the MCU calculation module 305 combines the ranging and/or angle measurement information to obtain the accurate distance between the current user and each nearby UWB base station in the current user holding posture. The MCU calculation module 305 informs the user through the UWB module 304 by vibration or voice broadcast, and then reminds the user whether the crossing ahead can pass or not, and prompts to slow down or wait for passing. The ultra-wideband-based aided visual impairment crowd traveling system comprises at least one blind road base station and at least one zebra crossing base station, wherein the at least one blind road base station and the at least one zebra crossing base station are respectively arranged as an active base station and a passive base station in proportion; at least one traffic light base station configured as an active base station; the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station are integrated with a UWB module; the label integrated with the UWB module is used for communicating with the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station to acquire distance information between the terminal and the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station, informs a user in a terminal vibration or voice broadcasting mode, and provides path planning and action suggestions for visually impaired people to go out through real-time distance measurement and accurate positioning.
Furthermore, the label of integrated UWB module is the blind person stick, the blind person stick includes handle, cane pole, power module, UWB module, MCU calculation module, bluetooth module, gyroscope, accelerometer and reinforcing multi-antenna module to use the blind person stick as the realization form of the label (user terminal) of integrated UWB module, provide more convenient service for seeing the barrier crowd goes out and goes out.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. The utility model provides a look barrier crowd assists travel system based on ultra wide band which characterized in that includes:
the system comprises at least one blind road base station and at least one zebra crossing base station, wherein the at least one blind road base station and the at least one zebra crossing base station are respectively arranged as an active base station and a passive base station in proportion;
at least one traffic light base station configured as an active base station;
the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station are all integrated with UWB modules;
the tag integrated with the UWB module is used for communicating with the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station so as to obtain distance information between a terminal and the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station, and informs a user in a terminal vibration or voice broadcasting mode.
2. The ultra-wideband-based visually impaired people-assisted travel system according to claim 1, wherein the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station are battery powered, illumination powered or run incorporated into a city power grid.
3. The ultra-wideband-based visually impaired people-assisted travel system of claim 1, wherein the distance information comprises the geographic location, direction of travel and speed of travel of the end-user.
4. The ultra-wideband-based visually-impaired people-assisted traveling system according to claim 1, further comprising at least one billboard base station disposed on a section where a safety hazard exists, the terminal communicating with the at least one billboard base station to acquire warning information.
5. The ultra-wideband-based visually impaired people-assisted traveling system according to claim 4, wherein the potential safety hazard-existing road sections comprise steps, steep uphill and downhill slopes, high-frequency truck access ports, and parking lot access ports.
6. The ultra-wideband based visually impaired people-assisted travel system of claim 1, wherein the UWB module integrated tag is a cell phone, tablet, laptop or wearable device.
7. The ultra-wideband based visually impaired people-assisted travel system of claim 1, wherein the UWB module integrated tag is a blind cane comprising a handle, a cane shaft, a power module, a UWB module, a MCU computing module, a bluetooth module, a gyroscope, an accelerometer, and an enhanced multi-antenna module.
8. The ultra-wideband-based visually impaired people-assisted travel system of claim 7, wherein the UWB tag is configured to communicate with the at least one blind road base station, the at least one zebra crossing base station and the at least one traffic light base station and perform ranging or goniometry functions.
9. The ultra-wideband-based assisted-travel system for visually impaired people according to claim 7, wherein the enhanced multi-antenna module is configured to perform an angle measurement function when the AOA positioning is turned on.
10. The ultra-wideband-based assisted-trip system for visually impaired people according to claim 7, wherein the Bluetooth module is used for the terminal to connect and communicate with a user wearable device.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115359648A (en) * | 2022-08-30 | 2022-11-18 | 歌尔科技有限公司 | Road traffic early warning method, mobile device and computer readable storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115359648A (en) * | 2022-08-30 | 2022-11-18 | 歌尔科技有限公司 | Road traffic early warning method, mobile device and computer readable storage medium |
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