CN113689713A - Vehicle speed monitoring method based on automobile data recorder - Google Patents
Vehicle speed monitoring method based on automobile data recorder Download PDFInfo
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- CN113689713A CN113689713A CN202010422233.6A CN202010422233A CN113689713A CN 113689713 A CN113689713 A CN 113689713A CN 202010422233 A CN202010422233 A CN 202010422233A CN 113689713 A CN113689713 A CN 113689713A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
- G08G1/054—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed photographing overspeeding vehicles
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0841—Registering performance data
- G07C5/085—Registering performance data using electronic data carriers
- G07C5/0866—Registering performance data using electronic data carriers the electronic data carrier being a digital video recorder in combination with video camera
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Abstract
The invention provides a vehicle speed monitoring method based on a vehicle data recorder, which is executed by the vehicle data recorder, wherein the vehicle data recorder comprises a storage module, a road selection switch, a camera, a central processing unit and a display unit; b. selecting the type of the road currently running through the road selection switch; c. intercepting the image shot by the camera through the central processing unit, obtaining the times N of appearance of a dotted line in the image in unit time T, calling the minimum distance D of the currently running road in the storage module according to V ═ D × N)/T, and calculating the current running speed V of the vehicle; and d, displaying the current running speed V of the vehicle through the display unit.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to a vehicle speed monitoring method, in particular to a vehicle speed monitoring method based on a vehicle data recorder.
[ background of the invention ]
The driving recorder is an instrument for recording the image and sound of the vehicle during driving. After the automobile data recorder is installed, the video images and the sound of the whole automobile driving process can be recorded, and evidence can be provided for traffic accidents. People who like self-driving tour can also use it to record the process of overcoming difficult obstructions. The video recording is walked while driving, all records time, speed, position in the video recording simultaneously, fairly "black box", according to motorcycle type and function classifiable as: high definition vehicle event data recorder, mini vehicle event data recorder, night vision vehicle event data recorder, wide angle vehicle event data recorder, twin-lens vehicle event data recorder, multi-functional all-in-one, glasses formula multi-functional vehicle event data recorder etc.. Some of the commercial uplink recorders (DVR) have a vehicle speed display function, and the vehicle speed is monitored by adding satellite navigation hardware, such as a GPS (Global Positioning System) or other satellite navigation hardware, such as GLONASS, beidou, etc., while some recorders do not have a vehicle speed display function because similar satellite navigation hardware is not installed for cost saving, save the cost for manufacturers, and have a relatively low price for users.
Therefore, there is a need for a vehicle speed monitoring system and method based on a driving recorder, which can monitor the driving speed of the vehicle without adding hardware of satellite navigation, so that the cost of the manufacturer is not increased, and the price is relatively cheap.
[ summary of the invention ]
The invention aims to solve the technical problem of providing a vehicle speed monitoring method based on a driving recorder, which can monitor the driving speed of a vehicle under the condition that the driving recorder does not increase hardware of satellite navigation.
In order to solve the technical problem, the invention provides a vehicle speed monitoring method based on a vehicle data recorder, which is executed by the vehicle data recorder, wherein the vehicle data recorder comprises a storage module, a road selection switch, a camera, a central processing unit and a display unit, and the vehicle speed monitoring method based on the vehicle data recorder comprises the following steps:
a. storing road information with lane boundaries in the storage module in advance, wherein the road information comprises road types and minimum distances D in the boundaries of various types of roads;
b. selecting the type of the road currently running through the road selection switch;
c. intercepting the image shot by the camera through the central processing unit, obtaining the times N of appearance of a dotted line in the image in unit time T, calling the minimum distance D of the currently running road in the storage module according to V ═ D × N)/T, and calculating the current running speed V of the vehicle; and
d. the current running speed V of the vehicle is displayed through the display unit.
Preferably, the road types include urban roads, expressways, national roads and provincial roads.
Preferably, the road selection switch is a touch option on the display unit.
Preferably, the road selection switch is a mechanical selection button provided on the tachograph housing.
Preferably, in step c, after calculating the current running speed V of the vehicle, the central processing unit compares the current running speed V of the vehicle with a preset speed upper limit value V of the type of the road currently runningmaxComparing, and when V is greater than or equal to Vmax is an alarm signal.
Preferably, in step d, an alarm signal is sent by the automobile data recorder while the current running speed V of the vehicle is displayed.
Preferably, the alarm signal can remind the driver by flashing light on the display unit or by voice from a voice player on the automobile data recorder.
Compared with the prior art, the vehicle speed monitoring method based on the automobile data recorder can obtain the cycle times of the front road surface dotted line in unit time by analyzing the images shot by the camera, and can accurately obtain the current vehicle speed after processing and calculation, thereby achieving the effect of monitoring the vehicle speed without any satellite navigation hardware, and realizing overspeed early warning by comparing the preset upper limit value of the speed of the current driving road type.
[ description of the drawings ]
Fig. 1 is a block schematic diagram of a driving recorder based on which the vehicle speed monitoring method based on the driving recorder is disclosed.
FIG. 2 is a flow chart illustrating steps of a vehicle speed monitoring method based on a vehicle event data recorder according to the present invention.
[ detailed description ] embodiments
Referring to fig. 1, the present invention provides a vehicle speed monitoring method based on a vehicle data recorder, which is executed by a vehicle data recorder 1, wherein the vehicle data recorder 1 includes a storage module 10, a road selection switch 11, a camera 12, a central processing unit 13 and a display unit 14, and the vehicle speed monitoring method of the vehicle data recorder includes the following steps:
step 200: the type of road currently being driven, such as an expressway, is selected by the road selection switch 11. In the present embodiment, the road selection switch 11 is a touch option on the display unit 14, and in other embodiments, the road selection switch 11 may also be a mechanical selection button disposed on the housing of the automobile data recorder 1.
Step 300: the central processing unit 13 captures the image captured by the camera 12, obtains the number N of times that the dotted line appears in the image in unit time T, and according to V ═ D × N)/T, retrieves the minimum distance D of the currently running road in the storage module 10, and calculates the current running speed V of the vehicle.
Step 400: the current running speed V of the vehicle is displayed by the display unit 14.
In the present embodiment, in step 300: after calculating the current running speed V of the vehicle, the cpu 13 compares the current running speed V of the vehicle with a preset upper limit value V of the speed of the current running road typemaxComparing, and when V is greater than or equal to Vmax is an alarm signal. In step 400, the current running speed V of the vehicle is displayedThe automobile data recorder 1 is also used for sending out an alarm signal. The alarm signal may be a flashing light on the display unit 14 to alert the driver, or a voice player (not shown) on the car recorder may be a voice alarm signal to alert the driver.
In summary, according to the vehicle speed monitoring method based on the automobile data recorder, the images shot by the camera are analyzed to obtain the number of times of the dotted line circulation of the road surface in front of the unit time, and the current vehicle speed can be accurately obtained through processing and calculation, so that the effect of monitoring the vehicle speed without any satellite navigation hardware is achieved, overspeed early warning can be realized by comparing the preset upper limit value of the speed of the current running road type, and due to the fact that no hardware is added, the cost of manufacturers is not increased, and the price is relatively low.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A vehicle speed monitoring method based on a vehicle data recorder is executed by the vehicle data recorder, the vehicle data recorder comprises a storage module, a road selection switch, a camera, a central processing unit and a display unit, and the vehicle speed monitoring method based on the vehicle data recorder is characterized by comprising the following steps:
a. storing road information with lane boundaries in the storage module in advance, wherein the road information comprises road types and minimum distances D in the boundaries of various types of roads;
b. selecting the type of the road currently running through the road selection switch;
c. intercepting the image shot by the camera through the central processing unit, obtaining the times N of appearance of a dotted line in the image in unit time T, calling the minimum distance D of the currently running road in the storage module according to V ═ D × N)/T, and calculating the current running speed V of the vehicle; and
d. the current running speed V of the vehicle is displayed through the display unit.
2. The vehicle speed monitoring method based on the automobile data recorder as claimed in claim 1, wherein the road type comprises urban roads, expressways, national roads and provincial roads.
3. The vehicle speed monitoring method based on the automobile data recorder as claimed in claim 1, wherein the road selection switch is a touch option on the display unit.
4. The vehicle speed monitoring method based on a driving recorder according to claim 1, characterized in that the road selection switch is a mechanical selection button disposed on a housing of the driving recorder.
5. The method for monitoring vehicle speed based on automobile data recorder as claimed in any one of claims 1-4, wherein in step c, after calculating the current running speed V of the vehicle, the CPU compares the current running speed V of the vehicle with a preset upper limit value V of the speed of the road type currently runningmaxComparing, and when V is greater than or equal to Vmax is an alarm signal.
6. The vehicle speed monitoring method based on the automobile data recorder as claimed in claim 5, wherein in step d, the alarm signal is sent by the automobile data recorder while the current running speed V of the vehicle is displayed.
7. The method as claimed in claim 6, wherein the warning signal is generated by flashing light on the display unit or by voice from a voice player on the car recorder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010422233.6A CN113689713A (en) | 2020-05-19 | 2020-05-19 | Vehicle speed monitoring method based on automobile data recorder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010422233.6A CN113689713A (en) | 2020-05-19 | 2020-05-19 | Vehicle speed monitoring method based on automobile data recorder |
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| CN113689713A true CN113689713A (en) | 2021-11-23 |
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| CN202010422233.6A Pending CN113689713A (en) | 2020-05-19 | 2020-05-19 | Vehicle speed monitoring method based on automobile data recorder |
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Citations (8)
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| CN105718870A (en) * | 2016-01-15 | 2016-06-29 | 武汉光庭科技有限公司 | Road marking line extracting method based on forward camera head in automatic driving |
| CN106097726A (en) * | 2016-08-23 | 2016-11-09 | 苏州科达科技股份有限公司 | The detection determination in region, traffic information detection method and device |
| CN106327880A (en) * | 2016-09-09 | 2017-01-11 | 成都通甲优博科技有限责任公司 | Vehicle speed identification method and system based on monitored video |
| CN110307791A (en) * | 2019-06-13 | 2019-10-08 | 东南大学 | Vehicle length and speed calculation method based on three-dimensional vehicle bounding box |
| CN110332945A (en) * | 2019-08-01 | 2019-10-15 | 北京眸星科技有限公司 | Navigation method and device based on traffic route graticule visual identity |
| CN110533916A (en) * | 2018-05-23 | 2019-12-03 | 上海擎感智能科技有限公司 | Driving behavior method of real-time and system, car-mounted terminal based on car-mounted terminal |
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2020
- 2020-05-19 CN CN202010422233.6A patent/CN113689713A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011123720A (en) * | 2009-12-11 | 2011-06-23 | Rohm Co Ltd | Driving recorder |
| WO2011096839A1 (en) * | 2010-02-08 | 2011-08-11 | Общество С Ограниченной Ответственностью "Cиctemы Передовых Технологий" | Device for determining the speed of travel and coordinates of vehicles and subsequently identifying same and automatically recording road traffic offences |
| CN105718870A (en) * | 2016-01-15 | 2016-06-29 | 武汉光庭科技有限公司 | Road marking line extracting method based on forward camera head in automatic driving |
| CN106097726A (en) * | 2016-08-23 | 2016-11-09 | 苏州科达科技股份有限公司 | The detection determination in region, traffic information detection method and device |
| CN106327880A (en) * | 2016-09-09 | 2017-01-11 | 成都通甲优博科技有限责任公司 | Vehicle speed identification method and system based on monitored video |
| CN110533916A (en) * | 2018-05-23 | 2019-12-03 | 上海擎感智能科技有限公司 | Driving behavior method of real-time and system, car-mounted terminal based on car-mounted terminal |
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| CN110332945A (en) * | 2019-08-01 | 2019-10-15 | 北京眸星科技有限公司 | Navigation method and device based on traffic route graticule visual identity |
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