CN101339674A - Driving recorder - Google Patents
Driving recorder Download PDFInfo
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- CN101339674A CN101339674A CNA2007101284123A CN200710128412A CN101339674A CN 101339674 A CN101339674 A CN 101339674A CN A2007101284123 A CNA2007101284123 A CN A2007101284123A CN 200710128412 A CN200710128412 A CN 200710128412A CN 101339674 A CN101339674 A CN 101339674A
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Abstract
The invention provides a driving recorder which comprises a processing unit, a caching unit, a gravity sensing unit, a geomagnetic location unit, an image capture unit and a storage unit; wherein, the processing unit can obtain a relative angle with a gravity field by the measurement of the gravity sensing unit, thus obtaining the running state of a vehicle, the processing unit also can detect the relative relation with the geomagnetic field by the geomagnetic location unit to obtain the latitude and longitude locations of the vehicle and to record the information in the storage unit; therefore,, the driving recorder of the invention does not need a plurality of wires to be connected to a steering wheel, a throttle, a brake, and the like, and can obtain the running state of the vehicle; and for the judgment of the vehicle location, any sensing dead angle can locate the vehicle location.
Description
Technical field
The present invention refers to especially that about a kind of drive recorder a kind of installation need not complicated distribution simply again, and when vehicle when wireless signal can't pass to part, still can obtain vehicle location and the drive recorder that write down.
Background technology
In society now, the height of automobile popularity, almost be that each family all can have an automobile, and progress along with science and technology, the outfit of automobile also has significant change, for example early stage automobile only has antitheft and the function remote control lock/unlock, and even almost comparatively high-grade at present vehicle all is equiped with a driving register, though existing drive recorder has the record road speed, wheel steering, data such as throttle and brake state, and can cooperate a collision sensing device to detect vehicle and whether be clashed into, so that the state in the vehicle ' is recorded in this drive recorder one by one; But drive recorder is obtained the design of these vehicle-states at present, be to be wired to bearing circle in the car, throttle, brake and speed of a motor vehicle inductor etc. with many, with a status data of picking up the car, therefore the required distribution of installing drive recorder is very complicated at present, and transport condition that still can't the identification vehicle, for example go up/descending with tilt etc.
In addition, the part drive recorder is collocation global position determination system (GlobalPositioning System is called for short GPS) further, and this device also is that the common top grade of present vehicle one of is equipped with; The positioning principle of GPS device, mainly be to utilize to run on earth satellite on every side, this satellite can be constantly sends to the face of land with the mode that the sends radio signals orbital motion data with this satellite, when the receiver in the GPS device is received the orbital motion data that satellite transmits, can see through software by the built-in processor of GPS device and the orbital motion data are converted to certain any spherical data of representing on the earth surface, therefore when receiving the orbital motion data that three satellites send continuously and calculating three spherical data, can produce an intersection point by these three spherical data, this intersection point promptly is the position of vehicle.
But because the radio signals intensity that satellite sent has certain limitation, therefore produce a little dead angle in the use, for example when vehicle ' is in cavern or basement, receiver in this GPS device can't receive the orbital motion data that satellite sends usually, thereby can't continue to calculate the present position of vehicle.
From the above, existing drive recorder and GPS device all have its shortcoming of using, and still remain further to be improved.
Summary of the invention
For this reason, fundamental purpose of the present invention is to provide a kind of drive recorder, and it not only can make the distribution design of vehicle more or less freely, and anywhere all can finish vehicle location.
For reaching the major technique means that aforementioned purpose takes is that a kind of drive recorder comprises:
One processing unit has the ability of carrying out computing and data processing;
One buffer unit connects the aforementioned processing unit, for processing unit temporary transient store data when carrying out computing and data processing;
One gravity sensing unit connects the aforementioned processing unit, and this gravity sensing unit can detect the relative angle between itself and the gravity field, learns the driving states of vehicle for this processing unit computing;
One earth magnetism positioning unit connects the aforementioned processing unit, and this earth magnetism positioning unit can detect the relativeness between itself and the magnetic field of the earth, the longitude and latitude position of learning vehicle for this processing unit computing;
One image acquisition unit connects the aforementioned processing unit, with the image of obtaining vehicle periphery and transfer to this processing unit;
One storage element connects the aforementioned processing unit, with driving states, longitude and latitude position and the image on every side of registration of vehicle.
Utilize above-mentioned technological means, this processing unit can be obtained the present driving states of vehicle by the relative angle between this gravity sensing unit and the gravity field, include add/slow down, on/descending, status information such as brake, turn to and tilt; In addition, this processing unit can be obtained the present longitude and latitude position of vehicle, and be obtained the present position of vehicle by the relativeness between this earth magnetism positioning unit and the magnetic field of the earth again; So, drive recorder of the present invention needs to be wired to bearing circle, throttle, brake etc. with many, can obtain the driving situation of vehicle, and by the mensuration of this earth magnetism positioning unit, can learn the position of vehicle, and not have the restriction at any use dead angle.
Description of drawings
Fig. 1 is the functional block diagram of a preferred embodiment of the present invention.
Fig. 2 is the circuit diagram of this processing unit in a preferred embodiment of the present invention.
Fig. 2 A is the enlarged drawing of A part among Fig. 2.
Fig. 2 B is the enlarged drawing of B part among Fig. 2.
Fig. 3 is the circuit diagram of this buffer unit and storage element in a preferred embodiment of the present invention.
Fig. 3 A, 3B are the part enlarged drawing of Fig. 3.
Fig. 4 is the circuit diagram of this gravity sensing unit in a preferred embodiment of the present invention, image transmission interface, video encoder and card insert type Storage Media connecting interface.
Fig. 4 A, 4B are the part enlarged drawing of Fig. 4.
Fig. 5 is the circuit diagram of this universal asynchronous receiving-transmitting transmission interface and circumscribed Storage Media connecting interface in a preferred embodiment of the present invention.
Fig. 5 A, 5B are the part enlarged drawing of Fig. 5.
Fig. 6 is the circuit diagram of this network card connecting interface in a preferred embodiment of the present invention.
Fig. 7 be should the time generation unit in a preferred embodiment of the present invention circuit diagram.
Fig. 7 A, 7B, 7C are the part enlarged drawing of Fig. 7.
Fig. 8 is the workflow diagram of a preferred embodiment of the present invention.
The primary clustering symbol description
10 handle single 11 speed of a motor vehicle inductors
20 buffer units, 30 gravity sensing unit
40 earth magnetism positioning units
41 universal asynchronous receiving-transmitting transmission interfaces
50 image acquisition units, 51 image transmission interfaces
60 video encoders, 70 storage elements
81 card insert type Storage Media connecting interfaces
82 circumscribed Storage Media connecting interfaces
83 network card connecting interfaces
831 network cards, 90 time generation unit
Embodiment
About a preferred embodiment of drive recorder of the present invention, see also shown in Figure 1ly, comprising:
One processing unit 10 is processing cores of drive recorder of the present invention, and it has the ability of carrying out computing and data processing, and can be connected to a speed of a motor vehicle inductor 11 of being located in the car body (not shown), to obtain present road speed data; See also shown in Figure 2, in present embodiment, described processing unit 10 adopts the integrated circuit (IntegratedCircuit is hereinafter to be referred as IC) of a model ASIC-FIC8120, there are a collision sensing value and an executive routine in it, are detailed later about the detailed process of this executive routine;
One buffer unit 20 connects aforementioned processing unit 10, uses for processing unit 10 temporary transient store data when carrying out computing and data processing; See also shown in Figure 3ly, in present embodiment, described buffer unit 20 is a plurality of Synchronous dynamic RAMs (Synchronous Dynamic RandomAccess Memory, be called for short SDRAM);
One gravity sensing unit 30, connect aforementioned processing unit 10, this gravity sensing unit 30 can detect the relative angle between itself and the gravity field, not only can learn the driving states of vehicle by this for these processing unit 10 computings, include the adding/slow down of vehicle, on/descending, brake, turn to and tilt etc. outside the state, more can be further judge that by this processing unit 10 whether relative angle between this gravity sensing unit 30 and the gravity field is greater than this collision sensing value, if judge that then vehicle may be collided; See also shown in Figure 4ly, in present embodiment, this gravity sensing unit 30 is a gravity sensor (G Sensor);
One earth magnetism positioning unit 40 connects aforementioned processing unit 10, and this earth magnetism positioning unit 40 can detect the relativeness between itself and the magnetic field of the earth, the longitude and latitude position of learning vehicle for these processing unit 10 computings; In present embodiment, this earth magnetism positioning unit 40 is an electronic compass device, see also shown in Figure 5, this electronic compass device is to see through a universal asynchronous receiving-transmitting transmission interface (UniversalAsynchronous Receiver/Transmitter is called for short the UART interface) 41 to connect this processing unit 10;
One image acquisition unit 50 is installed on the car body, and connects aforementioned processing unit 10, with the image of obtaining vehicle periphery and transfer to this processing unit 10; See also shown in Figure 4ly, in present embodiment, described image acquisition unit 50 is to see through an image transmission interface 51 to connect these processing units 10;
One video encoder 60 connects this processing unit 10, obtains the image that image acquisition unit 50 is transmitted with this processing unit 10 certainly, and with this image recompile; See also shown in Figure 4ly, in present embodiment, this video encoder 60 is the IC of a model SAA7121;
One storage element 70 connects aforementioned processing unit 10, with the speed of a motor vehicle of registration of vehicle, driving states, longitude and latitude position and encoded after the vehicle periphery image; See also shown in Figure 3ly, in present embodiment, described storage element 70 is a plurality of flash memories (Flash Memory);
One card insert type Storage Media connecting interface 81, connect aforementioned processing unit 10, this card insert type Storage Media connecting interface 81 can link with a card insert type Storage Media (not shown), and makes storage element 70 and this card insert type Storage Media swap data by these processing unit 10 controls; In present embodiment, see also shown in Figure 4ly, described card insert type Storage Media connecting interface 81 is a SD (SecureDigital) memory card connecting interface, can be inserted in wherein for a SD memory card;
One circumscribed Storage Media connecting interface 82 connects aforementioned processing unit 10, and can link with a circumscribed Storage Media (not shown), and makes storage element 70 and this circumscribed Storage Media swap data by these processing unit 10 controls; In present embodiment, see also shown in Figure 5ly, described circumscribed Storage Media connecting interface 82 is a USB-OTG (On-The-Go) interface, so-called USB-OTG interface, for one access USB device can be provided and as the USB device by the interface of access;
One network card connecting interface 83 connects aforementioned processing unit 10, for connecting a network card 831; See also shown in Figure 6, in present embodiment, described network card connecting interface 83 is a minisize peripheral component connecting interface (Mini-Peripheral Component Interconnect, be called for short the Mini-PCI interface), this network card 831 then can be a wireless network card, makes drive recorder of the present invention can connect wireless network;
One time generation unit 90, connect aforementioned processing unit 10, these 90 sustainable computing time and dates of time generation unit, for this processing unit 10 in the image of the present road speed of storage element 70 registration of vehicle, driving states, longitude and latitude position and vehicle periphery the time, record time and date at that time in the lump; See also shown in Figure 7, in present embodiment, described time generation unit 90 is a real-time clock (Real Time Clock, hereinafter to be referred as RTC), so-called real-time clock is meant in the device and makes battery-powered clock circuit, after the operating system of this device is closed or cut off the power supply, keep scalar date and time, the date and time reference with as this os starting the time.
Below sincerely describe with regard to the flow process of the executive routine of above-mentioned processing unit 10 internal memories:
After drive recorder of the present invention starts (100), promptly continue to obtain data (101), be respectively from this gravity sensing unit 30 obtain relative angle between itself and the gravity field, certainly this earth magnetism positioning unit 40 obtain relativeness between itself and the magnetic field of the earth, certainly this image acquisition unit 50 obtain the image data of vehicle periphery and certainly this speed of a motor vehicle inductor 11 obtain present road speed data;
Translation data (102) is the longitude and latitude position that the relativeness between the relative angle between gravity sensing unit 30 and the gravity field and earth magnetism positioning unit 40 and the magnetic field of the earth is converted to the driving states and the vehicle of vehicle;
Obtaining real-time time (103), is to obtain present date and time from this time generation unit 90;
Judging whether vehicle suffers collision (104), is whether to analyze relative angle between gravity sensing unit 30 and the gravity field greater than this collision sensing value;
If the relative angle between gravity sensing unit 30 and the gravity field is greater than this collision sensing value, judge that then vehicle is collided, and write down accident situation (105) immediately, be that the driving states of vehicle, the longitude and latitude position of vehicle, the image data of vehicle periphery, present road speed data and present date and time are recorded in this storage element 70;
If the relative angle between gravity sensing unit 30 and the gravity field judges then that less than this collision sensing value vehicle is collided, and continue to carry out the following step;
Cycle stores driving recording (106), is with the time interval one-period driving states data of vehicle, the longitude and latitude position data of vehicle, the image data of vehicle periphery, present road speed data and present date and time to be recorded in this storage element 70.
From the above, drive recorder of the present invention be utilize this gravity sensing unit obtain present the adding of vehicle/slow down, on/descending, brake, turn to, tilt and driving states such as collision, thus, not only can save and be wired to bearing circle, throttle and brake etc. with many, to reduce the complexity of distribution, more further the identification vehicle on/descending and transport condition such as tilt; In addition, drive recorder of the present invention more can utilize this earth magnetism positioning unit to learn the longitude and latitude position that vehicle is present, owing to this earth magnetism positioning unit is the longitude and latitude position of learning vehicle by the relativeness between comparison itself and the magnetic field of the earth, therefore unlikely as existing global position determination system (Global Positioning System, abbreviation GPS) as the device, must according to orbital motion data that satellite sent can the computing vehicle current position, so do not have the GPS device shortcoming of using the dead angle is not arranged.
Though but the present invention discloses in previous embodiment, is not limited in content mentioned in the previous embodiment, any variation and the modification done without departing from the spirit and scope of the present invention all belong to protection scope of the present invention.
Claims (13)
1, a kind of drive recorder comprises:
One processing unit has the ability of carrying out computing and data processing;
One buffer unit connects the aforementioned processing unit, for processing unit temporary transient store data when carrying out computing and data processing;
One gravity sensing unit connects the aforementioned processing unit, and this gravity sensing unit can detect the relative angle between itself and the gravity field, learns the driving states of vehicle for this processing unit computing;
One earth magnetism positioning unit connects the aforementioned processing unit, and this earth magnetism positioning unit can detect the relativeness between itself and the magnetic field of the earth, the longitude and latitude position of learning vehicle for this processing unit computing;
One image acquisition unit connects the aforementioned processing unit, with the image of obtaining vehicle periphery and transfer to this processing unit;
One storage element connects the aforementioned processing unit, with driving states, longitude and latitude position and the image on every side of registration of vehicle.
2, drive recorder as claimed in claim 1, it is characterized in that: further comprise a time generation unit, this time generation unit connects the aforementioned processing unit, and sustainable computing time and date, for this processing unit in the image of driving states, longitude and latitude position and the vehicle periphery of storage element registration of vehicle the time, record time and date at that time in the lump.
3, drive recorder as claimed in claim 1 is characterized in that: this processing unit further is connected with a speed of a motor vehicle inductor of being located in the car body, obtaining present road speed, and it is recorded in this storage element.
4, drive recorder as claimed in claim 2 is characterized in that: this processing unit further is connected with a speed of a motor vehicle inductor of being located in the car body, obtaining present road speed, and it is recorded in this storage element.
5, drive recorder as claimed in claim 4 is characterized in that: this processing unit further stores a collision sensing value and an executive routine, and wherein this executive routine comprises the following steps:
After drive recorder starts, promptly continue to obtain data, be respectively from this gravity sensing unit obtain relative angle between itself and the gravity field, certainly this earth magnetism positioning unit obtain relativeness between itself and the magnetic field of the earth, certainly this image acquisition unit obtain the image data of vehicle periphery and certainly this speed of a motor vehicle inductor obtain present road speed data;
Translation data is the longitude and latitude position that the relativeness between the relative angle between gravity sensing unit and the gravity field and earth magnetism positioning unit and the magnetic field of the earth is converted to the driving states and the vehicle of vehicle;
Obtaining real-time time, is to obtain present date and time from this time generation unit;
Judging whether vehicle is collided, is whether to analyze relative angle between gravity sensing unit and the gravity field greater than this collision sensing value;
If the relative angle between gravity sensing unit and the gravity field is greater than this collision sensing value, judge that then vehicle is collided, and write down accident situation immediately, be that the driving states of vehicle, the longitude and latitude position of vehicle, the image data of vehicle periphery, present road speed data and present date and time are recorded in this storage element;
If the relative angle between gravity sensing unit and the gravity field judges then that less than this collision sensing value vehicle is collided, and continue to carry out the following step;
Cycle stores driving recording, is with the time interval one-period driving states data of vehicle, the longitude and latitude position data of vehicle, the image data of vehicle periphery, present road speed data and present date and time to be recorded in this storage element.
6, as each described drive recorder in the claim 1 to 5, it is characterized in that: this earth magnetism positioning unit is an electronic compass device, and this electronic compass device is to see through a universal asynchronous receiving-transmitting transmission interface to connect this processing unit.
7, as each described drive recorder in the claim 1 to 5, it is characterized in that: this gravity sensing unit is a gravity sensor (G Sensor).
8, drive recorder as claimed in claim 1, it is characterized in that: further comprise a video encoder, this video encoder connects this processing unit, obtain the image that image acquisition unit is transmitted with this processing unit certainly, and, be sent to this storage element record by this processing unit again with behind this image recompile.
9, drive recorder as claimed in claim 1, it is characterized in that: further comprise a card insert type Storage Media connecting interface, this card insert type Storage Media connecting interface connects the aforementioned processing unit, linking, and make storage element and this card insert type Storage Media swap data by this processing unit control with a card insert type Storage Media.
10, as claim 1 or 9 described drive recorders, it is characterized in that: further comprise a circumscribed Storage Media connecting interface, this circumscribed Storage Media connecting interface connects the aforementioned processing unit, linking, and make storage element and this circumscribed Storage Media swap data by this processing unit control with a circumscribed Storage Media.
11, as claim 1 or 9 described drive recorders, it is characterized in that: comprise that further a network card connecting interface is for being connected with a network card.
12, drive recorder as claimed in claim 10 is characterized in that: comprise that further a network card connecting interface is for being connected with a network card.
13, as claim 1 or 8 described drive recorders, it is characterized in that: this image acquisition unit further sees through an image transmission interface and connects this processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101284123A CN101339674A (en) | 2007-07-05 | 2007-07-05 | Driving recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101284123A CN101339674A (en) | 2007-07-05 | 2007-07-05 | Driving recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101339674A true CN101339674A (en) | 2009-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101284123A Pending CN101339674A (en) | 2007-07-05 | 2007-07-05 | Driving recorder |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102371069A (en) * | 2010-08-12 | 2012-03-14 | 锐俤科技股份有限公司 | Electronic device with game function and motion control method thereof |
| CN102542630A (en) * | 2010-12-17 | 2012-07-04 | 海德威电子工业股份有限公司 | Driving information system |
| CN102592329A (en) * | 2011-01-04 | 2012-07-18 | 群丰科技股份有限公司 | Driving recording device |
| CN102866412A (en) * | 2012-09-13 | 2013-01-09 | 深圳市益光实业有限公司 | Vehicle driving monitoring navigator and vehicle driving monitoring navigation method |
| CN104103103A (en) * | 2014-07-23 | 2014-10-15 | 河南广播电视大学 | Computer processing system based on whole vehicle body sensing and all-dimensional state recording |
| CN111063210A (en) * | 2019-12-26 | 2020-04-24 | 广东星舆科技有限公司 | Vehicle monitoring method and device based on high-precision positioning |
-
2007
- 2007-07-05 CN CNA2007101284123A patent/CN101339674A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102371069A (en) * | 2010-08-12 | 2012-03-14 | 锐俤科技股份有限公司 | Electronic device with game function and motion control method thereof |
| CN102542630A (en) * | 2010-12-17 | 2012-07-04 | 海德威电子工业股份有限公司 | Driving information system |
| CN102592329A (en) * | 2011-01-04 | 2012-07-18 | 群丰科技股份有限公司 | Driving recording device |
| CN102866412A (en) * | 2012-09-13 | 2013-01-09 | 深圳市益光实业有限公司 | Vehicle driving monitoring navigator and vehicle driving monitoring navigation method |
| CN102866412B (en) * | 2012-09-13 | 2016-12-21 | 深圳市益光实业有限公司 | A kind of driving monitoring navigator and driving monitoring air navigation aid |
| CN104103103A (en) * | 2014-07-23 | 2014-10-15 | 河南广播电视大学 | Computer processing system based on whole vehicle body sensing and all-dimensional state recording |
| CN111063210A (en) * | 2019-12-26 | 2020-04-24 | 广东星舆科技有限公司 | Vehicle monitoring method and device based on high-precision positioning |
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Open date: 20090107 |