CN113611010A - Vehicle driving recorder with multiple unlocking modes - Google Patents
Vehicle driving recorder with multiple unlocking modes Download PDFInfo
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- CN113611010A CN113611010A CN202111178036.5A CN202111178036A CN113611010A CN 113611010 A CN113611010 A CN 113611010A CN 202111178036 A CN202111178036 A CN 202111178036A CN 113611010 A CN113611010 A CN 113611010A
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- Prior art keywords
- power supply
- vehicle
- circuit
- alarm
- remote starting
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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
-
- 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
- G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station
-
- 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
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
-
- 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
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00571—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by interacting with a central unit
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Time Recorders, Dirve Recorders, Access Control (AREA)
Abstract
The invention relates to the technical field of vehicle power distribution systems, in particular to a vehicle driving recorder with multiple unlocking modes. The recording instrument comprises a recording instrument body and a power distribution system, wherein the power distribution system comprises a power supply unit, the output end of the power supply unit is connected with the recording instrument body to form a power supply circuit, a locking switch is arranged on the power supply circuit, and the input end of the locking switch is connected with a power supply triggering unit. According to the invention, the alarm circuit of the vehicle works, then the vehicle alarm triggering module triggers the locking switch to unlock, so that the locking switch is closed, a passage is formed between the power supply circuit and the power supply unit, at the moment, the power supply unit outputs a power supply in the vehicle to the recorder body through the power supply circuit, so that the recorder body works, the video recording is carried out on the surrounding environment while the loudspeaker and the alarm lamp work, the problem that evidence can not be reserved after articles in the vehicle are stolen is solved, and the vehicle anti-theft coefficient is further improved.
Description
Technical Field
The invention relates to the technical field of vehicle power distribution systems, in particular to a vehicle driving recorder with multiple unlocking modes.
Background
The function of the vehicle driving recorder is similar to that of a black box applied to an airplane, the vehicle driving recorder has the working principle that the road surface conditions in front of, in and around the vehicle are recorded and updated circularly through digital video, information data comprise recording in-vehicle recording, acceleration, steering, braking and the like of the vehicle for investigation of responsibility of traffic accidents, and the vehicle driving recorder is usually connected with a vehicle power distribution system through a data line so as to realize the access of a power supply.
As the safety of vehicles increases, many vehicles are provided with anti-theft measures, such as: the vehicle is opened by force or the collision all can make warning circuit work, cooperation loudspeaker and alarm lamp work, reach the purpose of warning, and many vehicles still have the remote start function, but these functions are at the during operation, all can not be indirectly for the record appearance power supply that traveles, lead to the vehicle not normally to start like this, the record appearance that traveles can't record a video when the abnormal conditions appears, that is to say, the record appearance that traveles is only at the driving in-process record a video recording, make its effect restricted, can't utilize its and warning circuit or remote start circuit cooperation.
Disclosure of Invention
The invention aims to provide a vehicle driving recorder with multiple unlocking modes, which aims to solve the problems in the background technology.
In order to achieve the above object, the present invention provides a vehicle driving recorder with multiple unlocking modes, which comprises a recorder body and a power distribution system, wherein the recorder body comprises a CDD camera, a display screen, a storage memory card and a housing, the CDD camera is arranged on one side opposite to the display screen, the CDD camera and the display screen are both arranged outside the housing, the storage memory card is inserted into the housing, the power distribution system is used for distributing power to the recorder body, the power distribution system comprises a power supply unit, an output end of the power supply unit is connected with the recorder body to form a power supply circuit, a locking switch is arranged on the power supply circuit, an input end of the locking switch is connected with a power supply triggering unit, the power supply triggering unit is used for triggering the locking switch to be unlocked to be closed to enable the power supply circuit to form a passage for supplying power to the recorder body to work, and the power supply triggering unit adopts multiple modes for triggering, specifically, the method comprises the following steps:
the power supply triggering unit comprises a vehicle alarm triggering module and a remote starting triggering module, the input end of the vehicle alarm triggering module is connected with an alarm circuit of the vehicle, the input end of the remote starting triggering module is connected with a remote starting circuit of the vehicle, the output ends of the vehicle alarm triggering module and the remote starting triggering module are connected with a locking switch, and when the alarm circuit of the vehicle and the remote starting circuit work, the corresponding vehicle alarm triggering module and the remote starting triggering module trigger the locking switch to unlock.
As a further improvement of the present technical solution, the working condition of the alarm circuit includes:
the vehicle is impacted;
the door is forcibly opened when not unlocked;
the window is forcibly opened when not unlocked;
the trunk is forcibly opened when not unlocked.
As a further improvement of the technical scheme, the working condition of the remote starting circuit comprises that the vehicle is started by remote control.
As a further improvement of the technical scheme, the alarm circuit and the remote starting circuit are connected in parallel, and the alarm circuit and the remote starting circuit are connected in series with the power supply circuit.
As a further improvement of this solution, the vehicle comprises a main power supply and a backup power supply, wherein:
the main power supply is used for supplying power to the whole vehicle;
the standby power supply is used for supplying power to the alarm circuit and the remote starting circuit.
As a further improvement of the technical scheme, when the main power supply supplies power to the whole vehicle, the standby power supply cuts off the power supply to the alarm circuit and the remote starting circuit, and the main power supply supplies power to the power supply circuit.
As a further improvement of the technical scheme, the system further comprises an abnormal data uploading unit, wherein the abnormal data uploading unit is used for long-term transmitting the video data stored by the storage memory card to the cloud under the condition that the standby power supply supplies power to the alarm circuit and the remote starting circuit.
As a further improvement of the technical scheme, the abnormal data uploading unit uploads the abnormal data to the cloud and then sends abnormal information to the user mobile equipment terminal.
As a further improvement of this technical scheme, alarm circuit includes chip U1, alarm lamp D1, loudspeaker SPK, trunk sensor, door sensor and window sensor, the trunk sensor is connected with chip U1's 1 port, and the door sensor is connected with chip U1's 2 ports, and the window sensor is connected with chip U1's 3 ports, and sets up diode D2, D3 and D4 between trunk sensor, door sensor and the window sensor and corresponding port 1, 2 and 3 respectively, wherein:
the chip U1 comprises an AMP-N end, an AMP-P end, a VDD end, a GND end, a VCC end, a BUSY end and an R-FREQ end, the AMP-N end and the AMP-P end of the chip U1 are respectively connected with the N end and the P end of a loudspeaker SPK, the VDD end is connected with a resistor R5, the input end of the resistor R5 is connected with 3V voltage, the output end of the resistor R5 is connected with a capacitor C4 and is grounded, the GND end is connected with the capacitor C5, and the output end of the capacitor C5 is grounded;
VCC holds connecting resistance R4, and 3V voltage is connected to resistance R4's input, R-FREQ end is connected to resistance R4's output, VCC holds still connecting resistance R3, alarm lamp D1 is connected to resistance R3's output, BUSY end is connected to alarm lamp D1's output.
As a further improvement of the technical solution, the chip U1 further includes an EQ-L-OUT terminal, an EQ-L-IN terminal, and an AUDIO-L terminal, wherein:
the EQ-L-OUT end is connected with a capacitor C1 and a resistor R2, a capacitor C1 and a resistor R2 are connected IN parallel, the EQ-L-IN end is connected with the resistor R1, the output end of the resistor R1 is connected with a capacitor C2, and the output end of the capacitor C2 is connected with the AUDIO-L end.
Compared with the prior art, the invention has the beneficial effects that:
in the vehicle driving recorder with multiple unlocking modes, the alarm circuit of the vehicle works, then the vehicle alarm triggering module triggers the locking switch to unlock, so that the locking switch is closed, a passage is formed between the power supply circuit and the power supply unit, at the moment, the power supply unit outputs the power supply in the vehicle to the recorder body through the power supply circuit to work, thereby realizing the video recording of the surrounding environment while the horn and the alarm lamp work, solving the problem that the evidence can not be preserved after the articles in the vehicle are stolen, further improving the anti-theft coefficient of the vehicle, in addition, the locking switch is triggered to be unlocked by remotely starting the trigger module, thereby realize just starting the record appearance body when the vehicle is long-range to make it open the video recording to the accident appears when avoiding long-range start, the record appearance body can't be taken notes, thereby the evidence of the emergence accident when realizing the long-range start of vehicle remains.
Drawings
Fig. 1 is a block diagram of an overall working principle of embodiment 1 of the present invention;
fig. 2 is a block diagram of an operating principle of a power distribution system according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of the operation principle of a warning circuit of a vehicle according to embodiment 1 of the present invention;
fig. 4 is a block diagram of the working principle modules of the main power supply and the standby power supply in embodiment 2 of the present invention;
fig. 5 is a block diagram of a working principle module of an abnormal data uploading unit in embodiment 3 of the present invention.
The various reference numbers in the figures mean:
100. a recorder body;
200. a power distribution system; 210. a power supply unit; 220. a power supply triggering unit; 221. a vehicle alarm triggering module; 222. remotely starting a trigger module;
300. and an abnormal data uploading unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention provides a vehicle driving recorder with multiple unlocking modes, please refer to fig. 1, which comprises a recorder body 100 and a power distribution system 200, wherein the recorder body 100 comprises a CDD camera, a display screen, a memory card and a shell, the CDD camera is arranged at one side opposite to the display screen, the CDD camera and the display screen are both arranged outside the shell, the memory card is inserted into the shell, the power distribution system 200 is used for distributing power to the recorder body 100, the power distribution system 200 comprises a power supply unit 210, the output end of the power supply unit 210 is connected with the recorder body 100 to form a power supply circuit, a locking switch is arranged on the power supply circuit, the input end of the locking switch is connected with the power supply triggering unit 220, the power supply triggering unit 220 is used for triggering the locking switch to be unlocked so as to be closed and form a passage for supplying power to the recorder body 100 to work, the power supply triggering unit 220 adopts multiple modes for triggering, specifically, please refer to fig. 2:
the power supply triggering unit 220 comprises a vehicle alarm triggering module 221 and a remote starting triggering module 222, wherein the input end of the vehicle alarm triggering module 221 is connected with an alarm circuit of the vehicle, the input end of the remote starting triggering module 222 is connected with a remote starting circuit of the vehicle (here, the alarm circuit is connected with the remote starting circuit in parallel, the alarm circuit and the remote starting circuit are connected with the power supply circuit in series, so as to ensure that the alarm circuit and the remote starting circuit operate independently and realize power supply to the power supply circuit), the output ends of the vehicle alarm triggering module 221 and the remote starting triggering module 222 are connected with a locking switch, when the alarm circuit and the remote starting circuit of the vehicle work, the corresponding vehicle alarm triggering module 221 and the remote starting triggering module 222 trigger the locking switch to unlock, wherein: the alarm circuit operating conditions include: the vehicle is impacted, the door is forcibly opened when the door is not unlocked, the window is forcibly opened when the window is not unlocked, and the trunk is forcibly opened when the trunk is not unlocked; the remote start circuit operating condition includes the vehicle being remotely controlled to start.
It should be noted that, as shown in fig. 3, the alarm circuit includes a chip U1, an alarm lamp D1, a horn SPK, a trunk sensor, a door sensor and a window sensor, the trunk sensor is connected to 1 port of the chip U1, the door sensor is connected to 2 ports of the chip U1, the window sensor is connected to 3 ports of the chip U1, and diodes D2, D3 and D4 are respectively disposed between the trunk sensor, the door sensor and the window sensor and corresponding ports 1, 2 and 3, wherein:
the chip U1 adopts 48 chips, which comprises an AMP-N end, an AMP-P end, a VDD end, a GND end, a VCC end, a BUSY end and an R-FREQ end, wherein the AMP-N end and the AMP-P end of the chip U1 are respectively connected with the N end and the P end of the speaker SPK, the VDD end is connected with the resistor R5, the input end of the resistor R5 is connected with 3V voltage, the output end of the resistor R5 is connected with the capacitor C4 and grounded, the GND end is connected with the capacitor C5, and the output end of the capacitor C5 is grounded;
the working principle of the SPK of the loudspeaker is as follows:
firstly, a trunk sensor, a door sensor or a window sensor is triggered (namely, a door is forcibly opened when the door is not unlocked, a window is forcibly opened when the window is not unlocked, and a trunk is forcibly opened when the trunk is not unlocked), and then a VDD end outputs a voltage of 3V to a loudspeaker SPK, so that the loudspeaker SPK makes a sound to achieve the warning effect.
Simultaneously, VCC end connecting resistance R4, 3V voltage is connected to resistance R4's input, and R-FREQ end is connected to resistance R4's output, and VCC end still connects resistance R3, and alarm lamp D1 is connected to resistance R3's output, and the BUSY end is connected to alarm lamp D1's output.
The working principle of the alarm lamp D1 is as follows:
when the loudspeaker SPK makes a sound, the VCC end outputs 3V voltage to the alarm lamp D1 after the voltage is limited by the resistor R3, and then the alarm lamp D1 emits light to play the role of alarming.
Meanwhile, the chip U1 further includes an EQ-L-OUT terminal, an EQ-L-IN terminal, and an AUDIO-L terminal, wherein:
the EQ-L-OUT end is connected with a capacitor C1 and a resistor R2, a capacitor C1 and a resistor R2 are connected IN parallel, the EQ-L-IN end is connected with a resistor R1, the output end of the resistor R1 is connected with a capacitor C2, the output end of the capacitor C2 is connected with the AUDIO-L end, the resistor R2 and the capacitor C1 are connected IN parallel through the EQ-L-OUT end and output to the EQ-L-IN end, then the EQ-L-IN end and the AUDIO-L end are output through a resistor R1 and a capacitor C2 which are connected IN series, an equalizer is formed, and electric signals with different frequencies are generated through the equalizer to compensate defects of a loudspeaker SPK sound field.
During specific work, the work of warning circuit is exemplified, suppose that there is not the people in the vehicle, the warning circuit work of vehicle, loudspeaker SPK sends the chimes of doom this moment, alarm lamp D1 flickers simultaneously, in order to play the effect of warning and suggestion, then vehicle warning trigger module 221 triggers the unblock of locking switch, make it closed, let form the route between supply circuit and the power supply unit 210, power supply unit 210 exports the power in the vehicle to record appearance body 100 through supply circuit this moment, make its work, thereby realize carrying out video recording to the surrounding environment in loudspeaker SPK and alarm lamp D1 work, in order to solve the stolen back unable problem that the evidence keeps of article in the car, and then improve vehicle antitheft coefficient.
In addition, the remote start circuit has the same working principle as the above, and is different in that the locking switch is triggered to be unlocked through the remote start triggering module 222, so that the recorder body 100 is started when the vehicle is started remotely, a video is started, an accident is prevented from occurring during remote start, the recorder body 100 cannot record the accident, and evidence of the accident is kept when the vehicle is started remotely.
Example 2
Considering the problem that the recorder body 100 cannot work instantly when the alarm circuit and the remote start circuit are powered off after the vehicle is normally started, the power supply is switched between the main power supply and the standby power supply in the embodiment, please refer to fig. 4, where the vehicle includes the main power supply and the standby power supply, where:
the main power supply is used for supplying power to the whole vehicle;
the standby power supply is used for supplying power to the alarm circuit and the remote starting circuit.
When the main power supply supplies power to the whole vehicle, the standby power supply cuts off the power supply to the alarm circuit and the remote starting circuit, and the main power supply supplies power to the power supply circuit, so that the main power supply and the standby power supply are switched, and the recorder body 100 continuously keeps in a working state after the vehicle is normally started.
Example 3
In view of the fact that the recorder body 100 is maliciously damaged or the storage memory card is taken away, the video data are lost, in order to solve the problem, the embodiment discloses the abnormal data uploading unit 300, please refer to fig. 5, which further includes the abnormal data uploading unit 300, where the abnormal data uploading unit 300 is used to long-term transmit the video data stored in the storage memory card to the cloud under the condition that the standby power supply supplies power to the alarm circuit and the remote start circuit, so that even if the recorder body 100 is maliciously damaged or the storage memory card is taken away, a vehicle owner and other persons calling the video data can take the data through the cloud.
In addition, the abnormal data uploading unit 300 sends abnormal information to the user mobile device after uploading to the cloud, so that the vehicle owner is remotely reminded of the abnormal state of the vehicle, the learning capacity of the vehicle owner when the vehicle is abnormal is improved, and the risk that the vehicle is stolen is reduced.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides an automobile-used record appearance that traveles with many unlocking modes, includes record appearance body (100) and distribution system (200), record appearance body (100) include CDD camera, display screen, storage memory card and shell, and the CDD camera sets up in the relative one side of display screen, and CDD camera and display screen all install outside the shell, and storage memory card inserts in the shell, and distribution system (200) are used for distributing power to record appearance body (100), its characterized in that: the power distribution system (200) comprises a power supply unit (210), the output end of the power supply unit (210) is connected with the recorder body (100) to form a power supply circuit, a locking switch is arranged on the power supply circuit, the input end of the locking switch is connected with a power supply triggering unit (220), the power supply triggering unit (220) is used for triggering the locking switch to be unlocked to be closed to enable the power supply circuit to form a passage so as to supply power to the recorder body (100) to enable the recorder body to work, and the power supply triggering unit (220) is triggered in multiple modes;
the power supply triggering unit (220) comprises a vehicle alarm triggering module (221) and a remote starting triggering module (222), the input end of the vehicle alarm triggering module (221) is connected with an alarm circuit of the vehicle, the input end of the remote starting triggering module (222) is connected with a remote starting circuit of the vehicle, the output ends of the vehicle alarm triggering module (221) and the remote starting triggering module (222) are connected with a locking switch, and when the alarm circuit and the remote starting circuit of the vehicle work, the corresponding vehicle alarm triggering module (221) and the remote starting triggering module (222) trigger the locking switch to be unlocked.
2. The vehicle drive recorder with multiple unlocking modes according to claim 1, wherein: the alarm circuit operating conditions include:
the vehicle is impacted;
the door is forcibly opened when not unlocked;
the window is forcibly opened when not unlocked;
the trunk is forcibly opened when not unlocked.
3. The vehicle drive recorder with multiple unlocking modes according to claim 1, wherein: the remote start circuit operating condition includes the vehicle being remotely controlled to start.
4. The vehicle tachograph having a plurality of unlock modes according to any one of claims 1 to 3, wherein: the alarm circuit and the remote starting circuit are connected in parallel, and the alarm circuit and the remote starting circuit are connected in series with the power supply circuit.
5. The vehicle drive recorder with multiple unlocking modes according to claim 4, wherein: the vehicle includes a primary power source and a backup power source, wherein:
the main power supply is used for supplying power to the whole vehicle;
the standby power supply is used for supplying power to the alarm circuit and the remote starting circuit.
6. The vehicle drive recorder with multiple unlocking modes according to claim 5, wherein: when the main power supply supplies power to the whole vehicle, the standby power supply cuts off the power supply to the alarm circuit and the remote starting circuit, and the main power supply supplies power to the power supply circuit.
7. The vehicle drive recorder having multiple unlocking modes according to claim 6, wherein: the intelligent monitoring system further comprises an abnormal data uploading unit (300), wherein the abnormal data uploading unit (300) is used for long-transmitting the video data stored in the memory card to the cloud terminal under the condition that the standby power supply supplies power to the alarm circuit and the remote starting circuit.
8. The vehicle drive recorder with multiple unlocking modes according to claim 7, wherein: and the abnormal data uploading unit (300) uploads the abnormal data to the cloud and then sends abnormal information to the user mobile equipment terminal.
9. The vehicle drive recorder with multiple unlocking modes according to claim 4, wherein: alarm circuit includes chip U1, alarm lamp D1, loudspeaker SPK, trunk sensor, door sensor and window sensor, the trunk sensor is connected with chip U1's 1 port, and the door sensor is connected with chip U1's 2 ports, and the window sensor is connected with chip U1's 3 ports, and sets up diode D2, D3 and D4 between trunk sensor, door sensor and the window sensor and corresponding port 1, 2 and 3 respectively, wherein:
the chip U1 comprises an AMP-N end, an AMP-P end, a VDD end, a GND end, a VCC end, a BUSY end and an R-FREQ end, the AMP-N end and the AMP-P end of the chip U1 are respectively connected with the N end and the P end of a loudspeaker SPK, the VDD end is connected with a resistor R5, the input end of the resistor R5 is connected with 3V voltage, the output end of the resistor R5 is connected with a capacitor C4 and is grounded, the GND end is connected with the capacitor C5, and the output end of the capacitor C5 is grounded;
VCC holds connecting resistance R4, and 3V voltage is connected to resistance R4's input, R-FREQ end is connected to resistance R4's output, VCC holds still connecting resistance R3, alarm lamp D1 is connected to resistance R3's output, BUSY end is connected to alarm lamp D1's output.
10. The vehicle tachograph having a plurality of unlocking modes according to claim 9, wherein: the chip U1 further includes an EQ-L-OUT terminal, an EQ-L-IN terminal, and an AUDIO-L terminal, wherein:
the EQ-L-OUT end is connected with a capacitor C1 and a resistor R2, a capacitor C1 and a resistor R2 are connected IN parallel, the EQ-L-IN end is connected with the resistor R1, the output end of the resistor R1 is connected with a capacitor C2, and the output end of the capacitor C2 is connected with the AUDIO-L end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111178036.5A CN113611010A (en) | 2021-10-09 | 2021-10-09 | Vehicle driving recorder with multiple unlocking modes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111178036.5A CN113611010A (en) | 2021-10-09 | 2021-10-09 | Vehicle driving recorder with multiple unlocking modes |
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| CN102649421A (en) * | 2012-04-26 | 2012-08-29 | 南京物联传感技术有限公司 | Vehicle antitheft warning device and work method of vehicle antitheft warning device |
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Application publication date: 20211105 |