CN108482245B - Backing early warning method, device and system and wearable device - Google Patents
Backing early warning method, device and system and wearable device Download PDFInfo
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- CN108482245B CN108482245B CN201810126396.2A CN201810126396A CN108482245B CN 108482245 B CN108482245 B CN 108482245B CN 201810126396 A CN201810126396 A CN 201810126396A CN 108482245 B CN108482245 B CN 108482245B
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- 238000005259 measurement Methods 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 8
- 238000013507 mapping Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 10
- 210000000056 organ Anatomy 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
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- 230000007246 mechanism Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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- H04B5/72—
Abstract
The invention discloses a method, a device and a system for early warning of reversing and wearable equipment. The method comprises the following steps: when backing, receiving a ranging signal sent by a distance sensor of a vehicle-mounted system in a wireless mode, and determining distance information between a vehicle body and an obstacle according to the ranging signal; inquiring a preset distance information and vibration grade corresponding table according to the distance information, and determining the vibration grade corresponding to the distance information; and controlling the motor to vibrate according to the vibration grade to realize the early warning of backing. The vibration sense generated by the motor replaces a high-frequency noise early warning signal generated by the buzzer, so that the discomfort brought to a user by the noise generated when the buzzer is used for backing early warning in a narrow space of the vehicle body is reduced.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a method, a device and a system for early warning of reversing and wearable equipment.
Background
At present, a car-backing early warning system mainly applies a radar to detect the distance between a car body and an obstacle, sends a collected distance signal to a vehicle-mounted system in an electric signal mode, and controls terminal equipment such as a buzzer and the like to operate by the vehicle-mounted system so as to realize car-backing early warning. When backing a car by the buzzer and early warning, the high-frequency noise of production easily brings uncomfortable sense for the driver, and user experience is lower.
Disclosure of Invention
In view of the above, the present invention is proposed to provide a back-up warning method, device, system and wearable device that overcome or at least partially solve the above problems.
According to one aspect of the invention, a reverse warning method is provided, which comprises the following steps:
when backing, receiving a ranging signal sent by a distance sensor of a vehicle-mounted system in a wireless mode, and determining distance information between a vehicle body and an obstacle according to the ranging signal;
inquiring a preset corresponding table of distance information and vibration grade according to the distance information, and determining the vibration grade corresponding to the distance information;
and controlling the motor to vibrate according to the vibration grade to realize the early warning of backing.
According to another aspect of the present invention, there is provided a reverse warning apparatus, the apparatus comprising:
the receiving unit is used for receiving a ranging signal sent by a distance sensor arranged on a vehicle body in a wireless mode when the vehicle is reversed and sending the ranging signal to the processor;
the processor is used for determining distance information between the vehicle body and the obstacle according to the ranging signal; inquiring a preset corresponding table of distance information and vibration grade according to the distance information, and determining the vibration grade corresponding to the distance information; controlling a motor to vibrate according to the vibration grade;
and the motor is used for vibrating according to the vibration grade to realize the early warning of backing.
According to another aspect of the invention, a wearable device is provided, and the wearable device comprises the reversing early warning device.
According to another aspect of the invention, a reverse warning system is provided, which comprises an on-board system provided with a distance sensor and a wearable device; the vehicle-mounted system and the wearable equipment are in data communication in a wireless mode;
the vehicle-mounted system is used for acquiring a distance measuring signal by using a distance sensor when the vehicle is reversed and sending the distance measuring signal to the wearable equipment;
the wearable device is used for receiving a ranging signal sent by a distance sensor of the vehicle-mounted system in a wireless mode, and determining distance information between the vehicle body and the obstacle according to the ranging signal; inquiring a preset corresponding table of distance information and vibration grade according to the distance information, and determining the vibration grade corresponding to the distance information; and controlling the motor to vibrate according to the vibration grade to realize the early warning of backing.
The invention has the beneficial effects that: the technical scheme of the invention is that a distance measuring signal sent by a distance sensor of a vehicle-mounted system in a wireless mode is received when backing a car, and distance information between a car body and an obstacle is determined according to the distance measuring signal; inquiring a preset distance information and vibration grade corresponding table according to the distance information, and determining the vibration grade corresponding to the distance information; and controlling the motor to vibrate according to the vibration grade to realize the early warning of backing. Compared with the prior art, the high-frequency noise early warning signal that the sense of vibration that utilizes the motor to produce replaced bee calling organ production has reduced in the narrow and small space of automobile body owing to adopt the bee calling organ to carry out the uncomfortable sense that the noise that produces brought for the user when backing a car the early warning, not only can strengthen the security of backing a car, can promote user experience moreover.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a flow chart of a method of backing warning in an embodiment of the invention;
FIG. 2 illustrates a diagram of radar range versus shock level in accordance with an embodiment of the present invention;
FIG. 3 is a functional block diagram of a reverse warning apparatus according to an embodiment of the present invention;
FIG. 4 shows a schematic structural diagram of a wearable device in an embodiment in accordance with the invention;
FIG. 5 is a schematic diagram of a reverse warning system according to an embodiment of the present invention;
fig. 6 shows a schematic diagram of a ranging signal transmission mechanism according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Fig. 1 shows a flowchart of a vehicle reversing warning method according to an embodiment of the present invention, where the vehicle reversing warning method shown in fig. 1 includes:
and step S110, when backing, receiving a ranging signal sent by a distance sensor of the vehicle-mounted system in a wireless mode, and determining distance information between the vehicle body and the obstacle according to the ranging signal.
In this embodiment, this distance sensor includes infrared radar, laser radar or ultrasonic radar, installs one or more distance sensor in the left side of automobile body, right side and rear side, and this application does not do the restriction to distance sensor's type, mounted position and installation quantity, and in practical application, can set up distance sensor's type, mounted position and installation quantity according to actual need. The wireless mode comprises a Bluetooth, WiFi or ZigBee wireless communication mode and the like.
Step S120, querying a preset distance information and vibration level correspondence table according to the distance information, and determining a vibration level corresponding to the distance information.
In this embodiment, a table of correspondence between preset distance information and vibration level is shown in table 1:
TABLE 1 corresponding table of preset distance information and vibration grade
If the distance information between the vehicle body and the obstacle determined in step S110 is distance 1, the vibration level corresponding to distance 1 is determined to be vibration level 1 according to the distance 1 lookup table 1.
And S130, controlling the motor to vibrate according to the vibration grade, and realizing the early warning of backing.
In this embodiment, the motor is controlled to vibrate according to the vibration level 1 in step S120, so as to implement the warning of backing up.
Therefore, the technical scheme of the invention receives the ranging signal sent by the distance sensor of the vehicle-mounted system in a wireless mode when backing a car, and determines the distance information between the car body and the barrier according to the ranging signal; inquiring a preset distance information vibration grade corresponding table according to the distance information, and determining the vibration grade corresponding to the distance information; and controlling the motor to vibrate according to the vibration grade to realize the early warning of backing. Compared with the prior art, the high-frequency noise early warning signal that the sense of vibration that utilizes the motor to produce replaced bee calling organ production has reduced in the narrow and small space of automobile body owing to adopt the bee calling organ to carry out the uncomfortable sense that the noise that produces brought for the user when backing a car the early warning, not only can strengthen the security of backing a car, can promote user experience moreover.
In one embodiment of the present invention, the motor is a linear motor, and controlling the motor to vibrate according to the vibration level includes: and controlling the motor to vibrate according to the vibration grade by adopting a control mode of instant vibration and instant stop. In practical application, the higher the vibration level is, the smaller the distance difference is, in order to apply the vibration sense of different adjacent vibration levels to the human body, the free characteristic of the linear motor is utilized, namely, instant vibration and instant stop are performed, namely, when the motor is controlled to vibrate according to each vibration level, the vibration stops immediately after one time, so that the vibration sense of different adjacent vibration levels is applied to the human body better, the early warning sensitivity is improved, and the user experience is enhanced.
At present, the practical cases of the linear motor on the wearable device can be mainly divided into two types, namely "touch feedback type vibration" and "reminding type vibration". The wearable device continues the reminding type vibration mode on the mobile phone, wherein the reminding type vibration is developed earlier at the mobile phone end and is mainly used for reminding when the modes such as incoming calls, short messages and reminding are triggered; the touch feedback type vibration is mainly applied to apple equipment, such as a smart watch and an iPad touch pad, and is matched with multi-point touch to achieve the effect of point sensing. For example, when the user presses the screen of the device with force, the device feeds back editable feedback shocks of different strengths to the user according to different pressing forces. In practical application, linear motor's vibration effect is better, consequently also adopts linear motor in this application to utilize the distance between vibration simulation automobile body and the barrier better in the scene of difference, bring better vibration to experience for the user.
In an embodiment of the present invention, the preset mapping table of distance information and vibration level is obtained as follows: setting corresponding vibration levels for different distance levels; correspondingly dividing a plurality of real distances into different distance levels; a corresponding table of the real distance, the distance level and the vibration level is established as shown in the graph 2.
TABLE 2 true distance, distance class and vibration class corresponding TABLE 1
As can be seen from table 2, the smaller the real distance is, the lower the divided distance level is, and the higher the set vibration level is; and the higher the vibration level is, the smaller the difference of the real distances corresponding to the adjacent vibration levels is. The relationship between the distance level and the vibration level is kept unchanged once determined, so that only the real distance is changed according to the size of the vehicle body in the implementation process, and the universality of design is enhanced.
As another example, fig. 2 shows a correspondence diagram of radar distance and vibration level according to an embodiment of the present invention, and as shown in fig. 2, the vibration level is lower when the radar distance (i.e., the true distance between the vehicle body and the obstacle) is longer; the closer the radar distance, the higher the vibration level. Table 3 can be obtained from the correspondence between the radar distance and the vibration level shown in fig. 2.
TABLE 3 true distance, distance class and vibration class corresponding TABLE 2
| True distance (unit: meter) | Distance class | Vibration level |
| 16-20 | 8 | 1 |
| 13-16 | 7 | 2 |
| 9-13 | 6 | 3 |
| 6-9 | 5 | 4 |
| 4.8-6 | 4 | 5 |
| 4.8 | 3 | 6 |
| 2.5 | 2 | 7 |
| 1.6 | 1 | 8 |
As can be seen from table 3, the distance levels and the vibration levels are in a one-to-one correspondence relationship, and different distance levels correspond to different real distance ranges, that is, when the real distance detected by the radar falls into different real distance ranges, the distance levels are different from each other, so that the vibration level corresponding to the real distance detected by the radar is determined by the distance levels, and the higher the vibration level is, the stronger the vibration sense is. When the real distance detected by the radar is far, the distance between the vehicle body and the obstacle is a safe distance, and the motor can be controlled not to vibrate or be controlled to vibrate weakly. When the real distance detected by the radar is shorter, the distance between the vehicle body and the obstacle is a dangerous distance, the motor is controlled to vibrate instantly and stop instantly, and finer vibration levels are divided, so that the vibration sense is further enhanced. Through the change of the vibration sense, the user feels the change of the distance between the vehicle body and the barrier, so that the vehicle can be safely backed. In practical application, the range of the real distance can be set according to practical requirements.
In addition, when adjacent vibration levels are switched, a related smooth vibration algorithm is added to ensure that a user experiences the vibration sensation difference of the two adjacent vibration levels. Specifically, between adjacent vibration levels, the free characteristics of the linear motor, i.e., instant vibration and instant stop, are first utilized, as shown in table 4; then, as the vibration level increases, the adjacent vibration levels are divided into different differential divisions. The higher the vibration level, the more equally the difference. For example, the following steps are carried out: for example between 5 and 6 levels of vibration. The difference may be divided into 5 equal parts, 5.0, 5.2, 5.4, 5.6, 5.8 and 6.0, with 4 more shock levels added between 5 and 6 levels of shock. The number of differential portions increases gradually as the vibration level increases, and so on.
TABLE 4 vibration control of linear motors
| |
6 |
| Controlling the motor to stop immediately | Stop |
| Vibration level | 5.8 |
| Controlling the motor to stop immediately | Stop |
| Vibration level | 5.6 |
| Controlling the motor to stop immediately | Stop |
| Vibration level | 5.4 |
| Controlling the motor to stop immediately | Stop |
| Vibration level | 5.2 |
| Controlling the motor to stop immediately | Stop |
| |
5 |
As can be seen from table 4, the free characteristic of the instant stop of the linear motor is used between each differential equal vibration, so as to achieve the purpose of smooth transition between adjacent vibration levels. Therefore, the technical scheme of the invention optimizes the adjacent vibration levels, thereby achieving better vibration experience effect.
Fig. 3 is a schematic functional structure diagram of a reverse warning apparatus according to an embodiment of the present invention, and as shown in fig. 3, the reverse warning apparatus 300 includes:
the receiving unit 310 is used for receiving a ranging signal sent by a distance sensor installed on a vehicle body in a wireless mode when the vehicle is reversed and sending the ranging signal to the processor;
a processor 320 for determining distance information between the vehicle body and the obstacle according to the ranging signal; inquiring a preset distance information and vibration grade corresponding table according to the distance information, and determining the vibration grade corresponding to the distance information; controlling the motor to vibrate according to the vibration grade;
and the motor 330 is used for vibrating according to the vibration grade to realize the early warning of backing.
The processor 320 is specifically configured to control the motor to vibrate according to the vibration level by using a control manner of instant vibration and instant stop.
In this embodiment, the backing warning device 300 further includes a vibration level setting unit 340, configured to set corresponding vibration levels for different distance levels; correspondingly dividing a plurality of real distances into different distance levels; establishing a corresponding table of the real distance, the distance level and the vibration level; the smaller the real distance is, the lower the divided distance level is, and the higher the set vibration level is; and the higher the vibration level is, the smaller the difference of the real distances corresponding to the adjacent vibration levels is.
It should be noted that the working process of the reverse warning apparatus 300 in this embodiment is the same as that of each embodiment of the reverse warning method shown in fig. 1, which has been discussed in detail above, and the same contents are not repeated.
Fig. 4 shows a schematic structural diagram of a wearable device according to an embodiment of the present invention, and as shown in fig. 4, a wearable device 400 includes the reverse warning apparatus 300 shown in fig. 3.
In this embodiment, wearable equipment includes intelligent bracelet, intelligent wrist-watch etc..
It should be noted that the working process of the reverse warning apparatus 300 in this embodiment is the same as that of each embodiment of the reverse warning method shown in fig. 1, which has been discussed in detail above, and the same contents are not repeated.
Fig. 5 is a schematic structural diagram of a reverse warning system according to an embodiment of the present invention, and as shown in fig. 5, the reverse warning system 500 includes an in-vehicle system 520 mounted with a distance sensor 510 and a wearable device 530; the vehicle-mounted system 520 and the wearable device 530 are in data communication in a wireless mode;
the vehicle-mounted system 520 is used for acquiring a distance measurement signal by using the distance sensor 510 when the vehicle is reversed, and sending the distance measurement signal to the wearable device 530;
the wearable device 530 is used for receiving a ranging signal sent by a distance sensor of the vehicle-mounted system 520 in a wireless mode and determining distance information between the vehicle body and an obstacle according to the ranging signal; inquiring a preset distance information and vibration grade corresponding table according to the distance information, and determining the vibration grade corresponding to the distance information; and controlling the motor to vibrate according to the vibration grade to realize the early warning of backing.
Therefore, in the technical scheme of the invention, the vehicle-mounted system sends the ranging signals acquired by the distance sensor to the wearable equipment in a wireless communication mode, and the wearable equipment processes the ranging signals, so that the function fusion of the vehicle-mounted system and the wearable equipment is realized, and the function of the vehicle-mounted system is expanded; and the wearable equipment can acquire distance information between the vehicle body and the obstacle according to the distance measuring signal sent by the vehicle-mounted system, and call a vibration level corresponding to the distance information to control the motor to vibrate, so that the vehicle backing early warning is realized. Compared with the prior art, the high-frequency noise early warning signal that the sense of vibration that utilizes the motor to produce replaced bee calling organ production has reduced in the narrow and small space of automobile body owing to adopt the bee calling organ to carry out the uncomfortable sense that the noise that produces brought for the user when backing a car the early warning, not only can strengthen the security of backing a car, can promote user experience moreover.
It should be noted that the vehicle-mounted system 520 may not only send the ranging signal collected by the distance sensor to the wearable device 530 in a wireless manner, but also send the ranging signal to other mobile terminals, for example, electronic devices such as a smart phone, a tablet computer, and an MP 4.
Preferably, distance sensor 510 comprises an infrared radar, a lidar or an ultrasonic radar. For example, one or more distance sensors are installed on the left side, the right side and the rear side of the vehicle body, and in practical application, the type, the installation position and the installation number of the distance sensors can be set according to actual needs. The present application does not limit the type, installation position, and number of distance sensors. The wireless mode comprises a Bluetooth, WiFi or ZigBee wireless communication mode and the like.
Preferably, the distance sensor 510 is configured to collect a distance measurement signal between the vehicle body and the obstacle, store the distance measurement signal data in an internal storage space of the distance sensor, detect whether a stack amount of the internal storage space of the distance sensor reaches a maximum value of the stack amount, and send the distance measurement signal that the stack overflows to the wearable device 530 in a wireless manner if the stack amount of the internal storage space of the distance sensor reaches the maximum value of the stack amount, so as to send the distance measurement signal to the wearable device. Specifically, fig. 6 shows a schematic diagram of a ranging signal transmission mechanism in an embodiment of the present invention, as shown in fig. 6:
and S61, collecting distance measurement signals between the vehicle body and the obstacle. In this embodiment, when the user that the on-vehicle system gathered starts the device of backing a car, start distance sensor and gather the range finding signal between automobile body and the barrier.
And S62, storing the ranging signal data in the internal storage space of the distance sensor.
S63, detect whether the stack amount of the internal storage space of the distance sensor reaches the maximum value of the stack amount?
And S64, sending the range finding signal of stack overflow to the wearable device. Specifically, the distance measuring signal of stack overflow is sent to wearable equipment in a wireless mode, and the wireless mode comprises wireless communication modes such as Bluetooth, WiFi or ZigBee. When the vehicle-mounted system comprises a plurality of wireless communication modes, the priority of the Bluetooth communication mode is set to be the highest, namely, once the ranging signal overflowing from the stack is detected, the ranging signal is immediately sent to the wearable device through the Bluetooth communication mode. Because the advantage of the bluetooth communication mode in short-distance communication is obvious, the priority of the bluetooth communication mode is set to be the highest in the application, and in practical application, the priority of the appropriate wireless communication mode can be set according to actual needs.
S65, the ranging signal data is stored in the internal memory space of the range sensor, and S63 is executed.
It should be noted that the wearable device 530 in this embodiment has the same function as the wearable device 400 in fig. 4, and the same contents are not repeated.
In summary, the technical scheme of the invention receives the ranging signal sent by the distance sensor of the vehicle-mounted system in a wireless manner when backing up, and determines the distance information between the vehicle body and the obstacle according to the ranging signal; inquiring a preset distance information vibration grade corresponding table according to the distance information, and determining the vibration grade corresponding to the distance information; and controlling the motor to vibrate according to the vibration grade to realize the early warning of backing. Compared with the prior art, the high-frequency noise early warning signal that the sense of vibration that utilizes the motor to produce replaced bee calling organ production has reduced in the narrow and small space of automobile body owing to adopt the bee calling organ to carry out the uncomfortable sense that the noise that produces brought for the user when backing a car the early warning, not only can strengthen the security of backing a car, can promote user experience moreover.
While the foregoing is directed to embodiments of the present invention, other modifications and variations of the present invention may be devised by those skilled in the art in light of the above teachings. It should be understood by those skilled in the art that the foregoing detailed description is for the purpose of illustrating the invention rather than the foregoing detailed description, and that the scope of the invention is defined by the claims.
Claims (6)
1. A reverse warning method is characterized by comprising the following steps:
when backing, receiving a ranging signal sent by a distance sensor of a vehicle-mounted system in a wireless mode, and determining distance information between a vehicle body and an obstacle according to the ranging signal;
inquiring a preset corresponding table of distance information and vibration grade according to the distance information, and determining the vibration grade corresponding to the distance information;
controlling a motor to vibrate according to the vibration grade to realize backing warning;
the motor is a linear motor, and controlling the motor to vibrate according to the vibration level comprises:
controlling a motor to vibrate according to the vibration grade by adopting a control mode of instant vibration and instant stop;
the preset mapping table of the distance information and the vibration grade is obtained in the following mode:
setting corresponding vibration levels for different distance levels;
correspondingly dividing a plurality of real distances into different distance levels;
establishing a corresponding table of the real distance, the distance level and the vibration level;
the smaller the real distance is, the lower the divided distance level is, and the higher the set vibration level is; the higher the vibration level is, the smaller the difference value of the real distances corresponding to the adjacent vibration levels is;
and when the adjacent vibration levels are switched, adding a smooth vibration algorithm.
2. A reverse warning device, comprising:
the receiving unit is used for receiving a ranging signal sent by a distance sensor arranged on a vehicle body in a wireless mode when the vehicle is reversed and sending the ranging signal to the processor;
the processor is used for determining distance information between the vehicle body and the obstacle according to the ranging signal; inquiring a preset corresponding table of distance information and vibration grade according to the distance information, and determining the vibration grade corresponding to the distance information; controlling a motor to vibrate according to the vibration grade;
the motor is used for vibrating according to the vibration grade to realize backing warning;
the processor is specifically used for controlling the motor to vibrate according to the vibration grade by adopting a control mode of instant vibration and instant stop;
the device also comprises a vibration grade setting unit which is used for setting corresponding vibration grades for different distance grades; correspondingly dividing a plurality of real distances into different distance levels; establishing a corresponding table of the real distance, the distance level and the vibration level; the smaller the real distance is, the lower the divided distance level is, and the higher the set vibration level is; the higher the vibration level is, the smaller the difference value of the real distances corresponding to the adjacent vibration levels is; and when the adjacent vibration levels are switched, adding a smooth vibration algorithm.
3. A wearable device, characterized in that it comprises a reversing warning device according to claim 2.
4. The reversing early warning system is characterized by comprising a vehicle-mounted system and wearable equipment, wherein the vehicle-mounted system is provided with a distance sensor; the vehicle-mounted system and the wearable equipment are in data communication in a wireless mode;
the vehicle-mounted system is used for acquiring a distance measuring signal by using a distance sensor when the vehicle is reversed and sending the distance measuring signal to the wearable equipment;
the wearable device is used for receiving a ranging signal sent by a distance sensor of the vehicle-mounted system in a wireless mode, and determining distance information between the vehicle body and the obstacle according to the ranging signal; inquiring a preset corresponding table of distance information and vibration grade according to the distance information, and determining the vibration grade corresponding to the distance information; controlling a motor to vibrate according to the vibration grade to realize backing warning;
the wearable equipment is also used for controlling the motor to vibrate according to the vibration grade by adopting a control mode of instant vibration and instant stop;
the wearable device is also used for setting corresponding vibration levels for different distance levels; correspondingly dividing a plurality of real distances into different distance levels; establishing a corresponding table of the real distance, the distance level and the vibration level; the smaller the real distance is, the lower the divided distance level is, and the higher the set vibration level is; the higher the vibration level is, the smaller the difference value of the real distances corresponding to the adjacent vibration levels is; and when the adjacent vibration levels are switched, adding a smooth vibration algorithm.
5. The system of claim 4, wherein the distance sensor comprises an infrared radar, a lidar, or an ultrasonic radar.
6. The system of claim 4, wherein the distance sensor is configured to collect a distance measurement signal between the vehicle body and the obstacle, store the distance measurement signal data in an internal storage space of the distance sensor, detect whether a stack amount of the internal storage space of the distance sensor reaches a maximum value of the stack amount, and wirelessly transmit the distance measurement signal indicating stack overflow to the wearable device if the stack amount of the internal storage space of the distance sensor reaches the maximum value of the stack amount.
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| CN109544956A (en) * | 2018-12-29 | 2019-03-29 | 威马智慧出行科技（上海）有限公司 | A kind of car alarming audio control method and system |
| CN110281768A (en) * | 2019-07-01 | 2019-09-27 | 大众问问(北京)信息科技有限公司 | A kind of reversing householder method, device and system |
| CN110329188B (en) * | 2019-07-23 | 2024-03-26 | 南京工业职业技术学院 | Easily-detachable automobile bumper bar |
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