WO2020048550A2

WO2020048550A2 - Safety hat for blind person

Info

Publication number: WO2020048550A2
Application number: PCT/CN2019/111561
Authority: WO
Inventors: 肖遥
Original assignee: 肖遥
Priority date: 2018-09-04
Filing date: 2019-10-17
Publication date: 2020-03-12
Also published as: WO2020048550A3; CN109156921A

Abstract

A safety hat for a blind person, comprising a hat body, a detection control module and a calculation processing apparatus. The detection control module is mounted on the hat body, and comprises a battery unit, a detection unit, a warning unit, a wireless transceiving unit and a control unit electrically connected to the detection unit, the warning unit and the wireless transceiving unit. The detection unit comprises an ultrasonic sensor and a light sensor. The warning unit comprises a sound alarm and a light-emitting component. The wireless transceiving unit is matched with a mobile terminal, receives a signal outputted by the control unit, sends a signal to the matched mobile terminal, and receives a warning signal outputted by the mobile terminal for conveying to the control unit. The calculation processing apparatus is loaded in the mobile terminal, and enables the mobile terminal to receive a signal of a wireless sending interface, determine whether an obstacle is a dangerous obstacle according to an early warning detection signal, and if so, generate a warning signal for sending to a wireless receiving interface. The safety hat for a blind person effectively prevents a blind person from being hit, and significantly increases the safety of a blind person when going out.

Description

Blind hard hat

Technical field

The present application belongs to blind products, and particularly relates to a blind helmet.

Background technique

The blind and the visually impaired are a large number of groups, and their safety issues have always been the subject of government and social research. The government and other relevant departments are also committed to improving public facilities for the blind, and there are generally dedicated blind people on the road Roads for blind people to walk, but blind roads are often damaged for various reasons or blocked by many parked vehicles, debris, etc., causing blind people to travel affected, and even cause blind people to be injured, blind people generally use when walking Crutches are used to explore the road, but if there is an obstacle (such as a tree branch) above, the crutch cannot be detected. If the blind person cannot avoid it in time, it will cause injury. When the blind person goes out, the street noise is noisy. When the passerby finds that there is an obstacle near the blind person I want to remind passersby when I am passing, but because of the noisy streets, it is difficult for blind people to hear the reminders of passersby and they are injured by hitting obstacles. In the current market, there are many anti-lost, positionable bottom-end products that can prevent the blind from getting lost, but they cannot guarantee the walking safety of the blind.

The high-end blind navigation products are costly and cannot guarantee the use of poor people.

Therefore, there is a need for a safety helmet that can improve the travel safety of blind people and has a low cost.

Application content

The purpose of this application is to provide a blind helmet which can improve the travel safety of the blind and has low cost.

In order to achieve the above object, the present application provides a helmet for the blind, which includes a cap body, a detection control module, and a calculation processing device. The detection control module is mounted on the cap body and includes a control unit, which is electrically connected to the control unit. The connected detection unit, alarm unit, and wireless transceiver unit, and the battery unit supplies power to each unit in the detection control module; the detection unit includes an ultrasonic sensor and a light sensor, and at least one of the ultrasonic sensors is disposed at the front end of the cap body, the The ultrasonic sensor detects the distance of the surrounding obstacles and outputs a distance detection signal to the control unit. The light sensor detects the surrounding brightness and outputs a low-brightness signal to the control unit when the surrounding environment brightness is lower than a preset value; the alarm unit includes an audible alarm And a light emitting element, the sound alarms are disposed on both sides of the lower end of the cap body, the light emitting elements are disposed around the cap body; the wireless transceiver unit is matched with a mobile terminal and receives the output of the control unit And send it wirelessly to a matching mobile terminal, receiving the mobile The alarm signal output by the mobile terminal is transmitted to the control unit; the control unit is electrically connected to the detection unit, the alarm unit and the wireless transceiver unit, respectively, and generates a first warning signal when the distance detection signal is less than a first preset distance , Compressing and converting the distance detection signal into an early warning monitoring signal according to the first early warning signal, and then transmitting it to the wireless transceiver unit, and controlling the sound alarm to issue a corresponding voice alarm according to the warning signal, and according to the warning The signal and the low-light signal control the light-emitting element to emit light; the calculation processing device is loaded into a mobile terminal and the mobile terminal receives a signal sent by the wireless transmission interface, and judges the obstacle according to the early detection signal. If it is a dangerous obstacle, a corresponding alarm signal is generated, and the alarm signal is sent to the wireless receiving interface.

Compared with the prior art, the computing processing device of the present application is loaded in a mobile terminal, and the detection control module performs simple compression processing on the detected data, and then sends it to the mobile terminal for calculation processing through a short-range wireless transmission technology. It can clearly detect the surrounding environment information, accurately warn of unexpected conditions, and greatly reduce the cost of blind helmets. Users only need to buy blind helmets later. Furthermore, the present application uses an ultrasonic sensor to detect whether there is an obstacle within a certain distance in front of the blind person's walking path, and transmits the detection result to the control unit, and when a warning occurs to the accident, the sound alarm is controlled to send a voice signal, and the blind person hears the alarm After the voice signal from the device can avoid obstacles in front of you in time to avoid collision, at the same time, the light sensor is used to detect the brightness of the surrounding environment. When the surrounding environment is dark, the visibility of surrounding pedestrians also decreases. The light-emitting element is turned on in time, so that pedestrians around the blind person can notice the blind person and avoid the blind person, avoid collision and provide a channel for the blind person at the same time. This application uses an ultrasonic sensor and a light sensor to detect the obstacle in front and the brightness of the surrounding environment in a timely manner. Making corresponding actions can effectively avoid blind people's injuries and greatly improve the safety of blind people's travel.

Preferably, the detection unit further includes a camera lens electrically connected to the control unit, and the camera lens collects image information around the blind man's hard hat, and transmits the image information to the control unit. The control unit performs compression processing on the image information according to the first warning signal and transmits the processed image information from the wireless transceiver unit to a matching mobile terminal; the mobile terminal identifies the cap body based on the image information The type and size of the surrounding obstacles, and the warning detection signal is used to determine whether the obstacle is a dangerous obstacle, and if so, an alarm signal is generated. This application also uses a camera lens to collect image information, and the control unit compresses the image information and sends it to the mobile terminal for specific identification processing, thereby reducing costs.

Preferably, the detection unit further includes a gravity sensor, which is disposed in the cap and outputs a gravity detection signal to a control unit; the control unit compresses the gravity detection signal according to the first warning signal Converted into an early warning monitoring signal and sent to the wireless transceiver unit; the calculation processing device determines a speed at which the obstacle moves toward the cap body according to the early warning monitoring signal, and generates a first alarm when the speed is less than a threshold value Signal; the control unit controls the audible alarm to issue a first voice alarm according to the first alarm signal, controls the light emitting element to emit light according to the first alarm signal and a low-brightness signal, and according to the first alarm signal Controlling the ultrasonic sensor to increase the detection frequency. This solution allows the present application to initially determine a suspicious obstacle through the first warning signal, and then accurately determine the moving speed of the suspicious obstacle. When the suspicious obstacle moves to the position of the blind person at high speed, the blind person is informed, so that the blind person can take measures and improve The frequency of ultrasonic sensor scanning improves detection safety.

More preferably, the control unit further determines whether the cap body performs a preset action according to the gravity detection signal, and turns on or off the alarm unit or controls an alarm sound when the cap body performs a preset action, so The preset action is to swing back and forth a preset number of times in a preset direction within a preset time. This solution enables the application to adopt a multi-level early warning. When the obstacle is too close, the light-emitting element is controlled to blink to remind passersby to avoid in time or help the blind.

More preferably, the control unit further determines whether the cap body performs a first preset action and a second preset action based on the gravity detection signal, and closes or Activate the alarm unit, increase or decrease the alarm sound when the cap body makes a second preset action, the first preset action and the second preset action are over a preset direction within a preset time Swing back and forth a preset number of times. This solution enables the blind person to control the alarm state by shaking his head and shaking his head without manual control. When an acquaintance approaches the blind person or walks on a safe road, the alarm is turned off to prevent inconvenience caused to the blind person and passerby by mistake.

Preferably, the control unit further determines whether the distance detection signal is smaller than a second preset distance, and if so, generates a second warning signal, and the control unit compresses and converts the distance detection signal according to the second warning signal. It is an early warning monitoring signal and sends it to the wireless transceiver unit; the calculation processing device determines whether it is a dangerous obstacle according to the early warning monitoring signal, and if it is a second warning signal, the control unit controls the second warning signal according to the second warning signal. The audible alarm sends out a second voice alarm, and controls the light-emitting element to blink according to the second alarm signal and the low-brightness signal, and the second preset distance is smaller than the first preset distance.

More preferably, the control unit further controls the blinking frequency of the light emitting element correspondingly according to the distance in the distance detection signal, so that the closer the obstacle is, the higher the blinking frequency of the light emitting element.

More preferably, two sides of the cap body are respectively connected with a strap, and an elastic plate is provided on an end of the strap connected to the cap body, and the elastic plate is provided with an electrical connection with the control unit. A resistive strain gauge, the resistive strain gauge senses the pulling force at the strap and outputs a pulling force sensing signal to a control unit, and the control unit determines whether the strap is within a preset time based on the pulling force sensing signal Pull the preset number of times, and if yes, correspondingly open and close the detection unit and the battery unit. This solution enables the strap on the hat to cooperate with a resistive strain gauge as a button to control the switch of the detection unit. When it is unnecessary, the detection control module can be turned off or put into a standby state.

Preferably, two sides of the cap body are respectively connected with laces, and the ends of the laces are further connected with a sub-controller electrically connected to the control unit, and the sub-controllers are provided with clothes that can be fixed to clothes. A fixed detection device, a sub-detection unit is installed on the sub-controller, and an input knob is also provided on the cap body or the sub-controller, and the input knob can input corresponding height reference data, and the control unit The height reference data generates a safe distance range, and the sub-detection unit includes a sub-ultrasonic sensor that detects a distance of an object on the lower front side and generates a ground alarm signal when the distance of the object is less than the safe distance range. And control the sound alarm to issue a ground obstacle alarm. This solution enables blind people to find steps, obstacles or pits before the guide stick, and even makes the blind person escape from the guide stick. Among them, the height reference data is determined based on the height of the blind person and the fixed height of the secondary controller.

Preferably, there are four ultrasonic sensors and they are respectively installed on the left, right, front, and rear sides of the cap body. This solution enables the present application to comprehensively protect the blind around the safety and prevent the rear or the side Square objects hit the blind.

Preferably, the control unit further determines whether the blind person is in a walking state according to the gravity detection signal, and if otherwise enters a warning mode, in the warning mode, the control unit controls the light-emitting element to blink according to a low-brightness signal. When it is dark, if the blind person is stationary, the surrounding people are easily inadvertently bumped. This solution allows the blind person to control the surroundings to warn the surrounding person when he does not move, to prevent the surrounding people from colliding with the blind person because they ignore the blind person. And this application only controls the flashing of the light-emitting element in the warning state, and does not turn on when the blind person moves normally and the obstacle is not close, effectively saving power and increasing endurance.

Preferably, the alarm unit further includes a speaker, and the control unit controls the speaker to emit a corresponding alarm sound according to the alarm signal to alert a passerby.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a first embodiment of a blind helmet of the present application.

FIG. 2 is another schematic structural diagram of a first embodiment of a blind helmet according to the present application.

FIG. 3 is a block diagram of the use of the first embodiment of the blind helmet of the present application.

FIG. 4 is a schematic structural diagram of a second embodiment of a blind helmet according to the present application.

FIG. 5 is a block diagram of using a second embodiment of a hard hat for a blind person of the present application.

FIG. 6 is a schematic structural diagram of a third embodiment of a blind helmet according to the present application.

FIG. 7 is a use block diagram of a third embodiment of a blind helmet according to the present application.

detailed description

In order to have a clearer understanding of the technical features, objectives, and effects of the present application, specific implementations of the present application will be described in detail with reference to the drawings.

Please refer to FIG. 1 to FIG. 3. The present application provides a blind helmet 100 including a cap body 10, a detection control module 20, and a calculation processing device 30. The detection control module 20 is installed on the cap body 10, and the calculation processing device 30 is loaded on In the mobile terminal 200, specifically, the detection control module 20 includes a battery unit 201, a detection unit 202, an alarm unit 203, a wireless transceiver unit 204, and a control unit 205, where the battery unit 201 pairs the detection unit 202, The alarm unit 203, the wireless transceiver unit 204, the control unit 205, and other units supply power, and the detection unit 202 includes an ultrasonic sensor 2021 and a light sensor 2022. In this embodiment, there are four ultrasonic sensors 2021, which are respectively installed on the cap body 10 On the left, right, front, and rear sides, the ultrasonic sensors 2021 are used to detect the distance of surrounding obstacles and output a distance detection signal to the control unit 205. Of course, the number of ultrasonic sensors 2021 can also be one, two, or 5, 6, etc. When there is only one ultrasonic sensor 2021, the ultrasonic sensor 2021 is set at the front end of the cap body 10, and the light is transmitted. The sensor 2022 detects the brightness of the surrounding environment, and outputs a low-brightness signal to the control unit 205 when the brightness of the surrounding environment is lower than a preset value, wherein the preset value can be adjusted according to the needs of the actual blind person and the actual environment; the alarm unit 203 includes a sound An alarm 2031 and a light emitting element 2032, an audible alarm 2031 is provided on both sides of the lower end of the cap body 10, a light emitting element 2032 is provided around the cap body 10, and the control unit 205 is connected to the detection unit 202, the alarm unit 203, and the wireless transceiver unit 204, respectively Electrically connected, the wireless transceiver unit 204 matches the mobile terminal 200, the control unit 205 receives the distance detection signal output by the ultrasonic sensor 2021 in the detection unit 202, and controls when the distance of the obstacle in the distance detection signal is less than the first preset distance The unit 205 generates a first warning signal, compresses and converts the distance detection signal into an early warning monitoring signal according to the first early warning signal, and sends it to the wireless transceiver unit 204. After receiving the early warning monitoring signal, it sends the wireless processing interface to the computing processing device 30, and then Determine whether the obstacle is a dangerous obstacle according to the warning monitoring signal, and if so, then The corresponding alarm signal is sent to the wireless receiving interface of the wireless receiving unit 204. After receiving the alarm signal, the wireless receiving unit 204 returns the alarm signal to the control unit 205, and the control unit 205 controls the alarm unit 203 according to the alarm signal The corresponding audible alarm 2031 issues a corresponding audible alarm, so that blind people can learn that there are obstacles not far away in the direction of travel, and can avoid it in time. At the same time, if the light sensor 2022 of the detection unit 202 sends a low-brightness signal, the control unit 205 can Controlling the light-emitting element 2032 of the alarm unit 203 to emit light according to the alarm signal and the low-brightness signal can prevent the blind person from colliding with the surrounding pedestrians due to low visibility.

Specifically, in this embodiment, a battery is used to power each unit of the detection and control module 20. Of course, other types of power supply devices can also be used to supply power to the detection and control module 20 according to actual needs.

Preferably, the alarm unit 203 further includes a speaker electrically connected to the control unit 205. The control unit 205 may control the speaker to send a corresponding alarm sound to warn passers-by according to the alarm signal. The sound alarm 2031 of the alarm unit 203 is mainly used to remind blind people Pay attention to avoid obstacles, and the speaker reminds pedestrians to avoid blind people or provide assistance to blind people.

With continued reference to FIG. 1 to FIG. 3, preferably, the detection unit 202 further includes a camera lens 2023 electrically connected to the control unit 205. In this embodiment, the camera lens 2023 is disposed at the front end of the cap body 10, and may also be based on the shape of the hat. It can be set at a position where the surrounding environment can be collected. When the blind person wears the blind helmet 100, the camera lens 2023 can collect image information of the surrounding environment and transfer the collected image information to the control unit 205. A first warning signal is generated when the distance of the object is less than the first preset distance. The control unit 205 compresses the image information according to the first warning signal and transmits the processed image information and the warning monitoring signal to the mobile terminal via the wireless transceiver unit 204. 200. The mobile terminal 200 recognizes the type and size of the obstacle around the cap body 10 according to the received image information, and determines whether the obstacle is a dangerous obstacle based on the warning detection signal. If it is, a warning signal is generated and then controlled by the control. The unit 205 controls the alarm unit 203 to perform corresponding actions. Setting the camera lens 2023 can collect the surrounding environment, and record the specific type and size of the obstacle, so that the mobile terminal 200 can more accurately determine whether it is a dangerous obstacle based on the type and size of the obstacle, and improve the safety of the blind travel. .

Please continue to refer to FIGS. 1 to 3. Preferably, the detection unit 202 further includes a gravity sensor 2024 electrically connected to the control unit 205. The gravity sensor 2024 is disposed in the cap body 10 and outputs a gravity detection signal to the control unit 205. The control unit 205 converts the gravity detection signal into an early warning monitoring signal according to the first early warning signal and sends it to the wireless transceiver unit 204, and then sends it to the computing processing device 30 through the wireless transceiver unit 204, and the computing processing device 30 according to the early warning monitoring signal Determine the speed at which the obstacle moves in the direction of the cap body 10, and generate a first alarm signal and feed it back to the control unit 205 when the speed is less than a threshold value (threshold value can be set according to demand), and the control unit 205 according to the first An alarm signal controls the sound alarm 2031 to issue a first voice alarm, and the light emitting element 2032 is controlled to emit light according to the first alarm signal and the low-brightness signal. At the same time, the ultrasonic sensor 2021 is controlled to increase the detection frequency and reduce the blindness and The possibility of collision of obstacles. More preferably, the gravity sensor 2024 can also detect whether the cap body 10 makes a preset motion and generate a gravity detection signal. Specifically, the preset motion is to swing back and forth in a preset direction a preset number of times within a preset time, and the preset action Including the first preset action and the second preset action, the control unit 205 can also determine whether to perform a preset action based on the gravity detection signal, and determine the preset action as the first preset based on the gravity detection signal when the preset action is made. The action is also the second preset action. When the cap body 10 makes the first preset action, the control unit 205 can control to close or activate the alarm unit 203; when the cap body 10 makes the second preset action, the control unit 205 can The control raises or lowers the volume of the alarm sound without manual adjustment by the blind person. It only needs to perform preset actions by shaking the head and other actions to avoid false alarms caused by acquaintances approaching the blind person.

At the same time, the gravity sensor 2024 can also detect whether the blind person is walking and generate a gravity detection signal. The control unit 205 judges based on the gravity detection signal. If the blind person is not walking at this time, it enters the warning mode. When in the warning mode, the control unit 205 can control the blinking of the light-emitting element 2032 according to the low-brightness signal. That is, in the warning mode, if the light is good, the light sensor 2022 will not send a low-brightness signal at this time. Even if the blind person stops walking, pedestrians around can still avoid the blind person. The light-emitting element 2032 does not need to flicker, and in a dim light place, the light sensor 2022 sends a low-brightness signal to the control unit 205. When the blind person stops walking, it is difficult for pedestrians around to notice, and the control unit 205 can control the light-emitting element 2032 according to the low-brightness signal. Flashing to avoid pedestrians from hitting the blind.

In addition, the control unit 205 also determines whether the obstacle distance of the distance detection signal is less than the second preset distance, and if so, generates a second warning signal, and the control unit 205 compresses and converts the distance detection signal into an warning monitoring signal according to the second warning signal. It is sent to the wireless transceiver unit 204, and then to the computing processing device 30 via the wireless transceiver unit 204. The computing processing device 30 determines whether it is a dangerous obstacle according to the warning monitoring signal, and if so, generates a second alarm signal and feeds it back to the control unit 205 The control unit 205 controls the sound alarm 2031 to issue a second voice alarm according to the second warning signal, and controls the light-emitting element 2032 to blink according to the second alarm signal and the low-light signal. Preferably, the control unit 205 may depend on the distance The distance in the detection signal corresponds to controlling the blinking frequency of the light emitting element 2032, so that the closer the obstacle is to the blind person, the higher the frequency of blinking of the light emitting element 2032. The first preset distance and the second preset distance are both designed according to the actual environment. Here, the second preset distance is less than the first preset distance. When the distance between the blind person and the obstacle is less than the second preset distance, this At this time, the blind person is close to the obstacle but has not escaped the obstacle. At this time, the light-emitting element 2032 blinks and the blinking frequency is changed according to the distance between the blind person and the obstacle. Injured.

Please refer to FIG. 4 and FIG. 5. In the second embodiment of the blind helmet 100 of the present application, different from the first embodiment, the two sides of the cap body 10 are respectively connected with the straps 101, and the straps 101 are connected. An elastic plate 1011 is provided at the end of the cap body 10, and a resistive strain gauge 1011a electrically connected to the control unit 205 is provided on the elastic plate 1011. The resistive strain gauge 1011a can sense the tensile force at the strap 101 and control it. The unit 205 outputs a pulling force sensing signal, and the controlling unit 205 determines whether the strap 101 is pulled for a preset number of times within a preset time based on the pulling force sensing signal, and if so, turns off or starts the detecting unit 202. This embodiment determines whether the strap is pulled by determining whether the strap 101 is pulled a preset number of times (the sensitivity of the pull sensing signal is low) or whether the blind person makes a corresponding nod (the pull of the pull sensing signal). Sensitivity is high) to start or close the detection unit 202, for example, to pull or to quickly nod three times to start or close the detection unit 202. Among them, the resistance type strain gauge 1011a is electrically connected to the control unit 205 through a data line, and the data line is disposed in or wrapped around the strap. The tie is an elastic tie.

Please refer to FIG. 6 and FIG. 7. In the third embodiment of the blind helmet 100 of the present application, different from the first embodiment, the two sides of the cap body 10 are respectively connected with the ties 102, and the ties 102 A secondary controller 103 electrically connected to the control unit 205 is also connected to the end of the controller. The secondary controller 103 is provided with a fixing member 1031 that can be fixed on the clothes. The secondary controller 103 is also equipped with a secondary detection unit 1032 and an input. The button 1033, of course, the input button 1033 may be provided on the cap body 10. Specifically, the sub-detection unit 1032 and the input button 1033 are electrically connected to the control unit 205. The sub-detection unit 1032 includes The auxiliary ultrasonic sensor 1032a, and the input button 1033 can input corresponding altitude reference data. The altitude reference data is determined according to the height of the blind person and the fixed height of the auxiliary controller 103. The control unit 205 generates a safety according to the altitude reference data. Distance range, after the control unit 205 receives the distance signal transmitted by the auxiliary ultrasonic sensor 1032a, and compares it with the safe distance range, if the distance of the object is less than A ground obstacle warning signal is generated when the distance is within range, and the control unit 205 controls the sound alarm 2031 to issue a ground obstacle warning, so that the blind can find the ground steps, obstacles and pits in time, and even make the blind person out of the blind stick, making it easier for the blind to travel. ,safer.

Of course, the blind helmet 100 can be combined with the second embodiment and the third embodiment. On the basis of the first embodiment, the elastic plate 1011 and the sub-controller 103 are simultaneously added to improve the practicality of the blind helmet 100 and improve the blind Convenience and safety of travel.

The above are only preferred embodiments of this application, and the scope of rights of this application cannot be limited by this. Within the scope of the concept of the present application, corresponding changes can be reasonably made. Therefore, the protection scope of this application shall be subject to the claims.

Claims

A safety helmet for a blind person, comprising a cap body, a detection control module, and a calculation processing device. The detection control module is installed on the cap body and includes:

A battery unit for supplying power to each unit in the detection control module;

The detection unit includes an ultrasonic sensor and a light sensor. At least one of the ultrasonic sensors is disposed at the front end of the cap. The ultrasonic sensor detects the distance of the surrounding obstacles and outputs a distance detection signal to the control unit. The light sensor detects the surrounding brightness. And outputting a low-brightness signal to the control unit when the brightness of the surrounding environment is lower than a preset value;

The alarm unit includes an audible alarm and light-emitting elements, the audible alarms are disposed on both sides of the lower end of the cap body, and the light-emitting elements are disposed around the cap body;

The wireless transceiver unit is matched with a mobile terminal, receives a signal output from the control unit and wirelessly sends it to a matched mobile terminal, receives an alarm signal output from the mobile terminal, and transmits it to the control unit;

The control unit is electrically connected to the detection unit, the alarm unit, and the wireless transceiver unit, respectively, and generates a first warning signal when the distance detection signal is less than a first preset distance, and detects the distance according to the first warning signal. The signal is compressed and converted into an early warning monitoring signal and sent to the wireless transceiver unit, and the sound alarm is controlled to issue a corresponding voice alarm according to the alarm signal, and the light emitting element is controlled to emit light according to the alarm signal and a low-brightness signal;

The computing processing device is loaded in a mobile terminal and causes the mobile terminal to receive a signal sent by the wireless transmission interface, and determines whether the obstacle is a dangerous obstacle according to the early detection signal, and generates a corresponding alarm signal if it is, Sending the alarm signal to the wireless receiving interface.
The helmet for a blind person according to claim 1, wherein the detection unit further comprises a camera lens electrically connected to the control unit, and the camera lens collects image information around the helmet for the blind person, and The image information is transmitted to the control unit, and the control unit performs compression processing on the image information according to the first warning signal and transmits the processed image information from the wireless transceiver unit to a matching mobile terminal; mobile The terminal recognizes the type and size of the obstacle around the cap body according to the image information, and determines whether the obstacle is a dangerous obstacle in combination with the warning detection signal, and generates an alarm signal if it is.
The helmet for a blind person according to claim 1, wherein the detection unit further comprises a gravity sensor, the gravity sensor is disposed in the cap body and outputs a gravity detection signal to a control unit; and the control unit is based on the The first warning signal compresses and converts the gravity detection signal into a warning monitoring signal and sends it to the wireless transceiver unit; the calculation processing device determines a speed at which the obstacle moves toward the cap body according to the warning monitoring signal, and Generating a first alarm signal when the speed is less than a threshold; the control unit controls the audible alarm to issue a first voice alarm based on the first alarm signal, and controls the first alarm signal and the low-brightness signal according to the first alarm signal The light emitting element emits light, and controls the ultrasonic sensor to increase a detection frequency according to the first alarm signal.
The helmet for a blind person according to claim 1, wherein the control unit further determines whether the distance detection signal is less than a second preset distance, and if so, generates a second warning signal, and the control unit is based on the first The two early warning signals compress and convert the distance detection signal into an early warning monitoring signal and send it to the wireless transceiver unit; the calculation processing device determines whether it is a dangerous obstacle according to the early warning monitoring signal, and if it is a second warning signal, the control The unit controls the audible alarm to issue a second voice alarm based on the second alarm signal, controls the light-emitting element to blink according to the second alarm signal and a low-brightness signal, and the second preset distance is less than the first preset distance.
The helmet for the blind according to claim 4, wherein the control unit further controls the blinking frequency of the light-emitting element correspondingly according to the distance in the distance detection signal, so that the closer the obstacle is, the more light is emitted. The higher the component flicker frequency.
The helmet for a blind person according to claim 3, wherein the control unit further determines whether the cap body performs a preset action according to the gravity detection signal, and starts when the cap body performs a preset action. Turning off the alarm unit or controlling the alarm sound, the preset action is to swing back and forth in a preset direction for a preset number of times within a preset time.
The safety helmet for a blind person according to claim 6, wherein two sides of the cap body are respectively connected with straps, and an elastic plate is provided on an end portion of the strap connected to the cap body, and the elasticity A resistive strain gauge electrically connected to the control unit is provided on the board, and the resistive strain gauge senses the tension at the strap and outputs a tension induction signal to the control unit, and the control unit is based on the tension induction signal Determine whether the strap is pulled a preset number of times within a preset time, and if so, turn off or start the detection unit.
The safety helmet for a blind person according to claim 1, wherein two sides of the cap body are respectively connected with a strap, and the end of the strap is further connected with a sub-controller electrically connected to the control unit, so The sub-controller is provided with a fixing member that can be fixed on the clothes. The sub-controller is equipped with a sub-detection unit. The cap body or the sub-controller is also provided with an input knob. The input knob can input corresponding Height reference data, the control unit generates a safe distance range according to the height reference data, the sub-detection unit includes a sub-ultrasonic sensor, and the sub-ultrasonic sensor detects the distance of an object on the front and lower side, and When the distance is less than the safe distance range, a ground obstacle alarm signal is generated, and the sound alarm is controlled to issue a ground obstacle alarm.
The helmet for a blind person according to claim 1, wherein there are four ultrasonic sensors, and the ultrasonic sensors are respectively installed on the left side, the right side, the front side, and the rear side of the cap body.
The helmet for a blind person according to claim 3, wherein the control unit further determines whether the blind person is in a walking state based on the gravity detection signal, and if otherwise enters a warning mode, in the warning mode, the control unit The bright signal controls the light emitting element to blink.