TWM503352U - Driving safety warning device using voice to determine relative speed of front and rear vehicles - Google Patents

Description

Driving safety warning device for judging relative speed of front and rear vehicles by sound

The present invention relates to a driving safety system, and more particularly to a driving safety warning device for detecting the relative speed of the front and rear vehicles by using the sound of the vehicle distance.

The safety equipment of the vehicle can be divided into a passive safety system and an active safety system. The passive safety system is activated after the impact of the vehicle to protect the safety of the driver and passengers, such as airbags, high-rigidity and safety vehicles. Active safety systems operate first to reduce or avoid vehicle impact when the vehicle is at risk. Active safety systems include radar electromagnetic waves, image processing or laser light detection and other vehicle distances to help drivers correctly determine the speed and direction of travel.

However, when the electromagnetic wave of the radar is under heavy rain, the electromagnetic wave energy will be attenuated and affected by the Scattering effect, causing the problem of the cross-polarization interference of the electromagnetic wave, so that the detection of the radar electromagnetic wave safety system The result is not accurate. Images and laser light are also affected by weather conditions such as rain and haze. Therefore, no matter which detection method is used, the distance measuring device is easily affected by the environment, and the driver is misjudged, causing safety concerns.

Since the tire noise accounts for 91.5% when the vehicle is driving at high speed, and the noise when the vehicle is driving on a rainy road is higher than that of the dry road, the purpose of this creation is to provide a vehicle that uses sound to determine the relative speed of the front and rear vehicles. Safety warning devices to improve the accuracy of conventional vehicle distance measurement devices due to weathering.

The technical means adopted for solving the problems of the prior art provides a driving safety warning device for judging the relative speed of the front and rear vehicles by using the sound, and is disposed in a vehicle, and the driving safety warning device for determining the relative speed of the front and rear vehicles comprises: A row of vehicle noise processing module, a comparison judgment module and a warning module, the driving noise processing module is configured to handle the driving noise of the rear vehicle, and the function is to cut the tire and the engine after the wind cut audio frequency After the noise is amplified, the voltage average value is taken out, and the comparison judgment module is electrically connected to the module in the driving noise, receives the average value of the volume and voltage stored by the driving noise, and compares the driving noise according to the timing. The average value of the stored volume and voltage changes, and a vehicle or rear vehicle speed and direction information is obtained, and when it is determined that the vehicle speed and the movement information of the preceding vehicle or the rear vehicle are indicating that the preceding vehicle or the rear vehicle is approaching, Outputting a warning message, the warning module is electrically connected to the comparison judgment module, and receiving the warning information and correspondingly issuing a warning.

In an embodiment of the present invention, a driving safety warning device for judging relative speeds of front and rear vehicles by using sound is provided, and the driving noise is a tire sound and an engine sound of the front and rear vehicles.

In an embodiment of the present invention, a driving safety warning device for distinguishing the relative speeds of the front and rear vehicles is provided. The driving noise processing module includes a sound capturing unit, a row of vehicle noise screening unit, a detector, and a signal. In the storage device, the sound capturing unit captures a surrounding sound of the vehicle, and the driving noise screening unit signal is connected to the sound capturing unit, and the driving noise screening unit is surrounded by the vehicle according to a preset driving noise frequency range The ambient sound screen is used to extract the driving noise. The detector is electrically connected to the driving noise screening unit and the signal storage device. The detector converts the driving noise into a row of vehicle noise voltage storage data, and stores the driving noise voltage data in the vehicle. The signal storage.

In an embodiment of the present invention, a driving safety warning device for determining the relative speed of the front and rear vehicles by using a sound is provided, and the driving noise frequency ranges from 800 to 16000 Hz.

In an embodiment of the present invention, a driving safety warning device for discriminating the relative speeds of the front and rear vehicles is provided. The detector is configured to convert the magnitude of the sound noise of the driving noise into a DC size change to obtain the driving noise storage voltage data.

In an embodiment of the present invention, a driving safety warning device for determining a relative speed of a front and a rear vehicle by using a sound is provided. The driving noise screening unit includes a filter and an operational amplifier, and the filter signal is connected to the sound capturing unit. And filtering, according to the preset driving noise frequency range, the driving noise in the surrounding ambient sound of the vehicle, the operational amplifier being electrically connected to the filter for amplifying the filter screen of the filter The driving noise in the ambient sound of the vehicle.

In an embodiment of the present invention, a driving safety warning device for distinguishing the relative speeds of the front and rear vehicles is provided. The ambient sound of the vehicle includes a tire sound data, an engine sound data, and a wind cut sound data.

In an embodiment of the present invention, a driving safety warning device for determining a relative speed of a front and a rear vehicle by using a sound is provided. The comparison determining module includes a timing generator and a comparator, and the comparison determining module generates the timing based on the timing. The timing signal provided by the device periodically samples the driving noise, and the comparator is electrically connected to the timing generator, and the comparator collects the time t _n and the second collecting time t _n+1 according to the first time. The sound size changes, and it is judged whether the front and rear vehicles are approaching.

In an embodiment of the present invention, a driving safety warning device for distinguishing the relative speeds of the front and rear vehicles is provided. The warning module is disposed on an instrument panel of the vehicle and the left and right rearview mirrors.

In an embodiment of the present invention, a driving safety warning device for determining a relative speed of a front and a rear vehicle by using a sound is provided. The warning module includes a switching unit electrically connected to the comparison determining module for The warning information is used to switch the display state of the direction light of the dashboard.

The driving safety warning device that uses the sound to distinguish the relative speed of the front and rear vehicles has the following effects. Since the use of radar electromagnetic waves or laser light detection is susceptible to weather factors, the driving safety warning device of the present invention uses the driving noise processing module to replace electromagnetic waves and laser light. Therefore, the sound is used to determine the relative speed of the front and rear vehicles. The safety warning device utilizes a driving noise processing module that is not susceptible to weather, improving the accuracy of detection in poor weather. After the driving noise processing module collects the driving noise to remove the wind cutting frequency, the comparison determining module determines the movement of the rear vehicle, and finally the warning module gives warning to the driver and the rear vehicle to avoid traffic. The accident happened.

Embodiments of the present creation will be described below based on Figs. 1 to 7 . This description is not intended to limit the implementation of the present invention, but is one of the embodiments of the present invention.

As shown in FIG. 1 to FIG. 6, a driving safety warning device 100 for determining the relative speed of the front and rear vehicles according to an embodiment of the present invention is installed in a vehicle C1, and uses the sound to determine the driving safety of the front and rear vehicles. The warning device 100 includes a row of vehicle noise processing modules 1, a comparison determination module 2 and a warning module 3.

In detail, the driving noise processing module 1 is configured to collect the driving noise of the rear vehicle C2 (ie, a vehicle located behind the vehicle C1) (such as FIG. 5 to FIG. 7), and obtain a row of vehicle noise processing. Information D1', D2'. Specifically, the noise processing traffic data D1 ', D2' represent lines were first collected in a time t _n (as in the first seconds), and collected at time t _n the first one of the second collection time t _{n + 1} (such as the second second, or any time after the second second) collected traffic noise data of the vehicle C2. In the present embodiment, the driving noise processing module 1 includes a sound capturing unit 11, a row of vehicle noise screening unit 12, and a detector 13.

The sound capturing unit 11 captures a vehicle ambient sound V1 (as shown in FIG. 2) collected by the vehicle C1 at the first collection time t _{n and} the vehicle surroundings collected at the second collection time t _n+1 . Sound V2 (as in Figure 3). In detail, the vehicle ambient sounds V1, V2 include a tire sound data, an engine sound data, and a wind cut sound data of the rear vehicle C2, wherein the tire sound data is a tire and ground friction corresponding to the rear vehicle C2. Information about the sound that is emitted.

The driving noise screening unit 12 is connected to the sound capturing unit 11 , and the driving noise screening unit 12 takes out the driving noise D1 and D2 from the ambient sound V1 of the vehicle according to a predetermined driving noise frequency range. In this embodiment, the traffic noise frequency range of the city and the highway on the sunny day and the rainy day is mainly the engine frequency in the urban area; the highway is mainly based on the sound frequency of the tire and the ground friction, that is, 800 ~16000Hz, it is worth mentioning that the tire noise level in rainy days is larger and easier to identify. Specifically, the driving noise screening unit 12 includes a filter 121 and an operational amplifier 122. The filter 121 is electrically connected to the sound capturing unit 11 for filtering and driving the driving noise D1 and D2 according to the ambient noise V1 and V2 of the vehicle driving noise frequency range, and the operational amplifier 122 is connected to the filter 121. It is used to amplify the driving noise in the ambient sound of the directional vehicle out of the filter screen.

The detector 13 is electrically connected to the driving noise screening unit 12 and a signal storage unit 14. The detector 13 converts the sound amplitude of the driving noises D1 and D2 into DC signals to obtain driving noise processing data D1' and D2'. The signal storage 14 is stored in time series.

As shown in FIG. 1 to FIG. 3, the comparison determination module 2 is electrically connected to the driving noise processing module 1, and receives the driving noise processing data D1', D2', according to the comparison of the driving noise processing data. D1', D2' change the sound size with time, and get a rear vehicle movement information, and output a warning information D3 when it is determined that the rear vehicle movement information indicates that the rear vehicle approaching. In detail, the above-described change in the sound size over time means (t represents an arbitrary time). Specifically, the comparison determination module 2 includes a timing generator 21 and a comparator 22, and the comparison determination module 2 performs the traffic noise processing data D1', D2 based on a timing signal provided by the timing generation unit 21. 'Do regular sampling. The comparator 22 is electrically connected to the system timing generator 21, for receiving and collecting a first time than the time t and the second _n-collecting processing time t of the driving noise of the data D1 _{n + 1} ', D2' with The sound size of the time changes, and it is judged whether the front and rear vehicles are approaching.

As shown in FIG. 4 to FIG. 6, the warning module 3 is electrically connected to the comparison determination module 2, and receives the warning information D3 and correspondingly issues an alert. In the present embodiment, the warning module 3 includes a light number display portion L2 disposed on an instrument panel L1 of the vehicle C1, and two vehicle side direction lights L3 respectively disposed on the left and right rear view mirrors of the vehicle C1. The driver who warned the vehicle C1 and the driver who came to the car C2 at the rear were too close. Of course, this creation is not limited to this. The warning module 3 can also include a sound generator, a vibrator, and the like that can play a warning effect. Preferably, the warning module 3 includes a switching unit 31. The switching unit 31 is electrically connected to the comparison determining module 2 for switching the display state of the light display portion L2 of the instrument panel L1 according to the warning information D3. The status may include changing the direction of the direction light from the original color to red.

As shown in FIGS. 1 to 7, the operation mode of the driving safety warning device 100 for determining the relative speed of the front and rear vehicles using the sound of the present embodiment will be described in detail below. First, the sound capturing unit 11 extracts the vehicle ambient sound V1 at the first collection time, and then extracts the vehicle ambient sound V2 at the second collection time. The filter 121 filters the driving noise D1 for the first collection time and the driving noise D2 for the second collection time from the ambient sounds V1, V2 of the vehicle (including the tire sound data, the engine sound data, and the wind cut sound data). The adder 122 receives the driving noise data of the filter 121, and amplifies the sound amplitude of the driving noise data, and then uses the same. Then, the detector 13 converts the traffic noise D1, D2 sound amplitude into a DC signal to obtain driving noise processing data D1', D2'. Then, the comparison determination module 2 receives the driving noise processing data D1', D2', and then sequentially samples the driving noise processing data D1', D2' via the timing generator 21, and determines the rear in the comparison determining module 2 When the incoming vehicle movement information indicates that the rear approaching vehicle is approaching, the warning information D3 is output to the warning module 3. As shown in FIG. 4 to FIG. 6 , for example, when the driver wants to switch the vehicle C1 to the right lane, the rear vehicle C2 accelerates forward along the direction A1. At this time, the comparison determination module 2 is based on the rear. The warning information D3 is transmitted to the warning module 3 by the direction of the vehicle C2, so that the warning module 3 switches the indicator display portion L2 of the instrument panel L1 and the vehicle side direction light (L3 causes the red light to display the warning lamp And the distance between the rear vehicle C1 and the rear car C2 is gradually reduced.

The above description and description are only illustrative of the preferred embodiments of the present invention, and those having ordinary skill in the art may make other modifications in accordance with the scope of the patent application as defined below and the above description, but such modifications are still It is the creative spirit of this creation and is within the scope of this creation.

100‧‧‧Driving safety warning device using sound to determine the relative speed of front and rear vehicles
1‧‧‧ Driving noise processing module
11‧‧‧Sound capture unit
12‧‧‧ Driving Noise Screening Unit
121‧‧‧ Filter
122‧‧‧Operational Amplifier
13‧‧‧Detector
14‧‧‧Signal storage
2‧‧‧Comparative judgment module
21‧‧‧ Timing generator
22‧‧‧ Comparator
3‧‧‧ Warning Module
31‧‧‧Switching components
A1‧‧ Direction
C1‧‧‧ vehicles
C2‧‧‧ rear car
D1‧‧‧First time driving noise
D1'‧‧‧First time driving noise storage voltage data
D2‧‧‧Second time driving noise
D2'‧‧‧Second time driving noise storage voltage data
D3‧‧‧ Warning Information
L1‧‧‧dashboard
L2‧‧‧ Directional Lights
L3‧‧‧Left and right rear view mirror lights
V1‧‧‧The first time the ambient sound of the vehicle
V2‧‧‧Second time vehicle ambient sound

Fig. 1 is a block diagram showing a driving safety warning device for discriminating front and rear vehicle relative speeds using sound according to an embodiment of the present invention. Fig. 2 is a block diagram showing the driving safety warning device for determining the relative speed of the front and rear vehicles using the sound according to an embodiment of the present invention at the first collection time. Fig. 3 is a block diagram showing the driving safety warning device for determining the relative speed of the front and rear vehicles according to the embodiment of the present invention at the second collection time. Fig. 4 is a block diagram showing the output warning information of the driving safety warning device for determining the relative speed of the front and rear vehicles according to the embodiment of the present invention. Fig. 5 is a view showing the driving safety warning device for determining the relative speed of the front and rear vehicles according to the embodiment of the present invention at the first collection time. Fig. 6 is a view showing the second collection time of the driving safety warning device for determining the relative speed of the front and rear vehicles according to the embodiment of the present invention. Fig. 7 is a view showing the driving safety warning device for determining the relative speed of the front and rear vehicles according to the embodiment of the present invention at the time of warning.

100‧‧‧Use sound to distinguish between front and rear vehicles Speed driving safety warning device

1‧‧‧ Driving noise processing module

11‧‧‧Sound capture unit

12‧‧‧ Driving Noise Screening Unit

121‧‧‧ Filter

122‧‧‧Operational Amplifier

13‧‧‧Detector

14‧‧‧Signal storage

2‧‧‧Comparative judgment module

21‧‧‧ Timing generator

22‧‧‧ Comparator

3‧‧‧ Warning Module

31‧‧‧Switching components

D3‧‧‧ Warning Information

Claims (10)

The driving safety warning device for judging the relative speed of the front and rear vehicles by using the sound is set in a vehicle, and the driving safety warning device for judging the relative speed of the front and rear vehicles comprises: a row of vehicle noise processing modules, which are configured to correspond to the front and rear vehicles. Driving noise, and obtaining a row of vehicle noise storage voltage data at a first time collection time t _n and a second collection time t _n+1 ; a comparison determination module is electrically connected to the driving noise processing module, And receiving and comparing the driving noise storage voltage data of the first time collection time t _n and the second collection time t _n+1 to obtain a rear vehicle movement direction information, wherein the comparison determination module is in the second When the storage voltage of the collection time t _n+1 is higher than the storage voltage of the first collection time t _n and it is determined that the rear vehicle movement direction information indicates that the front and rear vehicles are approaching, a warning information is output; and a warning module is provided. The system is electrically connected to the comparison determination module, and receives the warning information and correspondingly issues a warning. The driving safety warning device for determining the relative speed of the front and rear vehicles according to the claim 1, wherein the driving noise is a tire sound and an engine sound of the front and rear vehicles. The driving safety warning device for determining the relative speed of the front and rear vehicles according to the claim 1, wherein the driving noise processing module comprises a sound capturing unit, a row of vehicle noise screening unit, a detector and a signal storage device. The sound capturing unit captures a surrounding sound of the vehicle, and the driving noise screening unit signal is connected to the sound capturing unit. The driving noise screening unit is based on a preset driving noise frequency range and is sounded from the surrounding environment of the vehicle. Taking out the driving noise, the detector is electrically connected to the driving noise screening unit and the signal storage device, and the detector converts the driving noise digital quantity into a row of vehicle noise voltage storage data, and stores the driving noise voltage data in time series The signal storage. . The driving safety warning device for determining the relative speed of the front and rear vehicles according to claim 3, wherein the preset driving noise frequency ranges from 800 to 16000 Hz. The driving safety warning device for determining the relative speed of the front and rear vehicles according to claim 3, wherein the signal detecting device is configured to convert the driving noise amplitude amplitude into a DC size change to obtain the driving noise storage voltage data. The driving safety warning device for determining the relative speed of the front and rear vehicles according to claim 3, wherein the driving noise screening unit comprises a filter and an operational amplifier, and the filter signal is connected to the sound capturing unit. The driving noise in the surrounding ambient sound of the vehicle is filtered and filtered according to the preset driving noise frequency range, and the operational amplifier is electrically connected to the filter for amplifying the filtered filter. The driving noise in the ambient sound of the vehicle. . The driving safety warning device for determining the relative speed of the front and rear vehicles according to claim 3, wherein the ambient sound of the vehicle includes a tire sound data, an engine sound data, and a wind cut sound data. The driving safety warning device for determining the relative speed of the front and rear vehicles according to claim 3, wherein the comparison determining module comprises a timing generator and a comparator, and the comparison determining module is provided based on the timing generator The timing noise of the driving noise is periodically sampled, and the comparator is electrically connected to the timing generator, and the comparator changes the sound size according to the first time collection time t _n and the second collection time t _n+1 , Determine if the car is approaching in front and rear. The driving safety warning device for determining the relative speed of the front and rear vehicles according to the claim 1, wherein the warning module is disposed on a dashboard of the vehicle and the left and right rearview mirrors. The driving safety warning device for determining the relative speed of the front and rear vehicles according to the claim 1, wherein the warning module comprises a switching unit electrically connected to the comparison determining module for the warning information according to the warning information And switching the display state of the direction light of the dashboard.