CN111654675A - Vehicle-mounted video monitoring processing system and method and vehicle-mounted video monitoring system - Google Patents
Vehicle-mounted video monitoring processing system and method and vehicle-mounted video monitoring system Download PDFInfo
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- CN111654675A CN111654675A CN202010514486.6A CN202010514486A CN111654675A CN 111654675 A CN111654675 A CN 111654675A CN 202010514486 A CN202010514486 A CN 202010514486A CN 111654675 A CN111654675 A CN 111654675A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The embodiment of the invention discloses a vehicle-mounted video monitoring processing system and method and a vehicle-mounted video monitoring system. An in-vehicle video surveillance processing system comprising: the device comprises a control module, a power supply module, a voltage acquisition module, a power supply switching module, a voltage management module, a compensation module and a main storage module; the power supply module comprises a main power supply and a standby power supply; the power supply switching module is respectively and electrically connected with the main power supply, the standby power supply and the control module; the voltage acquisition module is electrically connected with a voltage feedback end of the control module; the electric energy acquisition end of the compensation module is electrically connected with the main power supply, the signal receiving end is electrically connected with the compensation control end of the control module, and the electric energy output end is electrically connected with the first input end of the voltage management module; the voltage management module is electrically connected with the control module; the main storage module is electrically connected with the control module. The invention improves the stability of power supply for the vehicle-mounted video monitoring device, simultaneously fully utilizes the electric energy, improves the quality of the monitoring video and effectively reduces the volume and the cost of the standby energy.
Description
Technical Field
The embodiment of the invention relates to a vehicle-mounted video monitoring technology, in particular to a vehicle-mounted video monitoring processing system and method and a vehicle-mounted video monitoring system.
Background
In the traffic industry, a vehicle is often provided with a vehicle-mounted video monitoring device to carry out video recording on the conditions inside and outside the vehicle in the driving process so as to fulfill the aim of investigation and evidence collection after accidents, disputes and other conditions occur.
When abnormal power failure occurs, the vehicle-mounted video monitoring device can cause video loss, and difficulty is increased for follow-up investigation and evidence obtaining. At present, the problem of video loss when a main power supply is abnormally powered off is solved by adding a standby power supply.
However, in the process of abnormal power failure of the main power supply and in the process of switching from the main power supply to the standby power supply, the voltage provided for the vehicle-mounted video monitoring device fluctuates, that is, the power supply is unstable, and the quality of the monitoring video is reduced. The standby power supply is large in size and high in price, the size of the monitoring device is increased, the manufacturing cost of the monitoring device is improved, and meanwhile, the overlarge standby power supply has certain potential safety hazards.
Disclosure of Invention
The invention provides a vehicle-mounted video monitoring processing system and method and a vehicle-mounted video monitoring system, which are used for improving the stability of power supply for a vehicle-mounted video monitoring device while avoiding loss of a monitoring video.
In a first aspect, an embodiment of the present invention provides a vehicle-mounted video monitoring processing system, including: the device comprises a control module, a power supply module, a voltage acquisition module, a power supply switching module, a voltage management module, a compensation module and a main storage module;
the power supply module comprises a main power supply and a standby power supply and is used for supplying power to the vehicle-mounted video monitoring device;
the power supply switching module comprises a control end, a fixed end and two switching ends, wherein the two switching ends are respectively electrically connected with the main power supply and the standby power supply, the fixed end is electrically connected with a voltage input end of the control module, the control end is electrically connected with a control output end of the control module, and the power supply switching module is used for gating the main power supply or the standby power supply;
the voltage acquisition module is electrically connected with a voltage feedback end of the control module and is used for acquiring the output voltage of the main power supply in real time and feeding the output voltage back to the control module;
the compensation module comprises an electric energy acquisition end, a signal receiving end and an electric energy output end, the electric energy acquisition end is electrically connected with the main power supply, the signal receiving end is electrically connected with a compensation control end of the control module, the electric energy output end is electrically connected with the vehicle-mounted video monitoring device, and the compensation module is used for acquiring electric energy in the power-down process of the main power supply and supplying power to the vehicle-mounted video monitoring device;
the control module is used for sequentially controlling the compensation module to supply power to the vehicle-mounted video monitoring device and the power supply switching module to be switched to the standby power supply when the output voltage of the main power supply acquired by the voltage acquisition module is determined to be less than or equal to a set threshold value;
the second input end of the voltage management module is electrically connected with the voltage output end of the control module, the output end of the voltage management module is used for being electrically connected with the vehicle-mounted video monitoring device, and the voltage management module is used for controlling the output voltage of the voltage management module to be maintained at the working voltage of the vehicle-mounted video monitoring device according to the output voltage of the power supply module;
the main storage module is electrically connected with the first communication end of the control module and used for storing video data of the vehicle-mounted video monitoring device.
Optionally, the voltage management module includes a dynamic adjustment module, a voltage reduction module, and a voltage boost module;
the voltage management module is electrically connected with a voltage output end of the control module, the dynamic adjustment module is used for adjusting the output voltage of the voltage management module according to a control signal of the control module, the dynamic adjustment module controls the voltage reduction module to reduce the output voltage of the voltage management module, and the dynamic adjustment module controls the voltage boosting module to boost the output voltage of the voltage reduction module.
Optionally, the standby power supply includes farad capacitor and battery, the gating of power switching module when standby power supply supplies power for on-vehicle video monitoring device, use in proper order farad capacitor with battery supplies power for on-vehicle video monitoring device.
Optionally, the system further comprises a collision detection module and an exception storage module, wherein the exception storage module comprises at least two storage devices;
the collision detection module is electrically connected with the second communication end of the control module and used for generating a collision interrupt signal and sending the collision interrupt signal to the control module when a vehicle is detected to collide;
the abnormal storage module is electrically connected with a third communication end of the control module, and the control module is further used for cutting off the power supply of the main storage module when receiving the collision interrupt signal and storing the video data of the vehicle-mounted video monitoring device to the abnormal storage module.
Optionally, the main storage module includes a serial hard disk and a hard disk protection unit, and the hard disk protection unit is configured to cut off a power supply of the serial hard disk.
Optionally, the main power supply is electrically connected with the control module through the EMC module.
Optionally, the main power supply is electrically connected to the backup power supply, and the main power supply is further configured to charge the backup power supply.
In a second aspect, an embodiment of the present invention further provides a vehicle-mounted video monitoring processing method, including:
when a main power supply supplies power to the vehicle-mounted video monitoring device, acquiring the output voltage of the main power supply in real time;
when abnormal power failure of the output voltage of the main power supply is monitored, the output voltage of the vehicle-mounted video monitoring device is dynamically regulated by a voltage management module to be maintained at the working voltage of the vehicle-mounted video monitoring device;
when the output voltage of the main power supply is determined to be smaller than or equal to a set threshold value, the compensation module is sequentially controlled to supply power to the vehicle-mounted video monitoring device and switched to a standby power supply to supply power to the vehicle-mounted video monitoring device;
and storing the video data of the vehicle-mounted video monitoring device in real time through a main storage module.
Optionally, the vehicle-mounted video monitoring processing method further includes:
when the vehicle collision is detected, the power supply of the main storage module is cut off;
and storing the video data of the vehicle-mounted video monitoring device to an abnormal storage module, wherein the abnormal storage module comprises at least two storage devices.
In a third aspect, an embodiment of the present invention further provides a vehicle-mounted video monitoring system, including at least one path of vehicle-mounted video monitoring device and the vehicle-mounted video monitoring processing system provided in the embodiment of the present invention, where the vehicle-mounted video monitoring processing system is electrically connected to the vehicle-mounted video monitoring device.
According to the invention, the voltage acquisition module in the vehicle-mounted video monitoring processing system acquires the output voltage of the main power supply and feeds the output voltage back to the control module, and when abnormal power failure occurs, the standby power supply is switched to provide stable voltage for the vehicle-mounted video monitoring device, so that the problem of monitoring video data loss in the abnormal power failure process of the main power supply is solved; the voltage management module controls the output voltage of the voltage management module to be maintained at the working voltage of the vehicle-mounted video monitoring device according to the output voltage of the power supply module, the problem that the main power supply is switched to a standby power supply in the process is solved, the voltage provided for the vehicle-mounted video monitoring device fluctuates, namely, the power supply is unstable, the quality problem of the monitoring video is reduced, meanwhile, the electric energy in the abnormal power failure process of the main power supply is fully utilized, the monitoring video is prevented from being lost, the stability and the energy conservation for supplying power to the vehicle-mounted video monitoring device are improved, the quality of the monitoring video is improved, and the size of the standby energy is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a vehicle-mounted video monitoring processing system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a vehicle-mounted video monitoring processing system according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a voltage management module of a vehicle-mounted video monitoring processing system according to a second embodiment of the present invention;
fig. 4 is a flowchart of a vehicle-mounted video monitoring processing method according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of a vehicle-mounted video monitoring system according to a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a schematic structural diagram of a vehicle-mounted video monitoring processing system according to an embodiment of the present invention, and as shown in fig. 1, the vehicle-mounted video monitoring processing system includes: the power supply comprises a control module 10, a power supply module 20, a voltage acquisition module 40, a power supply switching module 30, a voltage management module 50, a compensation module 80 and a main storage module 70;
the power supply module 20 comprises a main power supply 21 and a standby power supply 22, and is used for supplying power to the vehicle-mounted video monitoring device 60;
the power switching module 30 includes a control end a, a fixed end b and two switching ends (d and e), the two switching ends (d and e) are respectively connected with the main power supply 21 and the standby power supply 22, the fixed end b is electrically connected with the voltage input end g of the control module 10, the control end a is electrically connected with the control output end f of the control module 10, and the power switching module 30 is used for gating the main power supply 21 or the standby power supply 22;
the voltage acquisition module 40 is electrically connected with the voltage feedback end h of the control module 10, and the voltage acquisition module 40 is used for acquiring the output voltage of the main power supply 21 in real time and feeding the output voltage back to the control module 10;
the compensation module 80 comprises an electric energy acquisition end q, a signal receiving end p and an electric energy output end o, wherein the electric energy acquisition end q is electrically connected with the main power supply 21, the signal receiving end p is electrically connected with a compensation control end c of the control module 10, the electric energy output end o is connected with the vehicle-mounted video monitoring device, and the compensation module 80 is used for acquiring electric energy in the power failure process of the main power supply 21 and supplying power to the vehicle-mounted video monitoring device 60;
the control module 10 is configured to, when it is determined that the output voltage of the main power supply 21 acquired by the voltage acquisition module 40 is less than or equal to a set threshold, sequentially control the compensation module 80 to supply power to the vehicle-mounted video monitoring apparatus 60 and switch the power supply switching module 30 to the standby power supply 22;
a second input end i of the voltage management module 50 is electrically connected with a voltage output end j of the control module 10, an output end k of the voltage management module 50 is used for electrically connecting with the vehicle-mounted video monitoring device 60, and the voltage management module 50 is used for controlling the output voltage of the voltage management module 50 to be maintained at the working voltage of the vehicle-mounted video monitoring device 60 according to the output voltage of the power module 20;
the main storage module 70 is electrically connected to the first communication terminal l of the control module 10, and is used for storing video data of the vehicle-mounted video monitoring device 60.
In the running process of the vehicle, a vehicle-mounted video monitoring device on the vehicle can shoot videos and store video data; illustratively, when the main power supply 21 supplies power normally, the main power supply 21 is electrically connected to the switching end e of the power switching module 30, the power switching module 30 is electrically connected to the voltage input end g of the control module 10 through the fixed end b, and the main power supply 21 supplies power to the control module 10; a voltage output end j of the control module 10 is electrically connected with a second input end i of the voltage management module 50, an output end k of the voltage management module 50 is used for being electrically connected with the vehicle-mounted video monitoring device 60, and the main power supply 21 supplies power to the vehicle-mounted video monitoring device 60; the voltage acquisition module 40 is electrically connected with the main power supply 21 to acquire the output voltage of the main power supply 21 in real time, and the voltage acquisition module 40 is electrically connected with the voltage feedback end h of the control module 10 to feed back the acquired output voltage to the control module 10; the main storage module 70 is electrically connected to the first communication terminal l of the control module 10, and the video data captured by the vehicle-mounted video monitoring device 60 is transmitted to the main storage module 70 through the control module 10 for storage.
In the embodiment of the present invention, when the power supply of the main power source 21 is abnormal, for example, when abnormal power failure occurs, the problem of loss of the monitoring video data often occurs, the voltage acquisition module 40 feeds back the acquired output voltage to the control module 10, and when the control module 10 determines that the output voltage of the main power source 21 is less than or equal to a set threshold, the control module 10 sequentially controls the compensation module 80 to supply power to the vehicle-mounted video monitoring apparatus 60 and switch power supply to the power switching module 30, specifically, the compensation control end c of the control module 10 sends out a power supply signal, the compensation module 80 acquires the electric energy in the power failure process of the main power source 21 through the electric energy acquisition end q, supplies power to the vehicle-mounted video monitoring apparatus 60 through the electric energy output end o, monitors the voltage output by the compensation module 80, and when the voltage provided by the compensation module 80 is not enough to maintain the normal operation of, the control output end f of the control module 10 sends a switching signal, and the control end a of the power switching module 30 receives the switching signal; the main power supply 21 is electrically disconnected from the switching end e of the power supply switching module 30, the switching end d of the power supply switching module 30 is electrically connected with the standby power supply 22, and the standby power supply 22 supplies power to the control module 10; meanwhile, the standby power supply 22 directly supplies power to the vehicle-mounted video monitoring device 60; the problem of the abnormal power failure of the main power supply that the monitoring video data are lost is solved, meanwhile, the electric energy in the abnormal power failure process of the main power supply is fully utilized, the energy is saved, and the size of the standby battery is reduced.
When the power supply of the main power supply 21 is abnormal, because the voltage supplied to the vehicle-mounted video monitoring device 60 fluctuates, that is, the power supply is unstable, and the quality of the monitoring video is often reduced, in the embodiment of the present invention, the control module 10 controls the output voltage of the voltage management module 50 to be maintained at the working voltage of the vehicle-mounted video monitoring device, so that the problem of the quality reduction of the monitoring video caused by the unstable power supply is solved. When the power supply of the main power supply 21 is insufficient to stably work the vehicle-mounted video monitoring device 60, the timely switching compensation module 80 supplies power to the vehicle-mounted video monitoring device 60 and the power supply 21 is switched to the standby power supply 22, so that the time for the vehicle-mounted video monitoring device 60 to stably work is prolonged.
Illustratively, the main power supply 21 is a vehicle body power supply, the power supply range is 9-36V, and the vehicle can be compatible with main vehicle models of 12V and 24V, the power supply switching module 30 is suitable for a large-current power supply system with wide voltage of 3.5A, and the power supply switching module 30 can still work normally when the load rejection voltage of the vehicle suddenly rises to 65V high voltage.
When the voltage acquisition module 40 acquires abnormal output voltage, the control module 10 rapidly controls the compensation module 80 to supply power to the vehicle-mounted video monitoring device 60 and switch power supply of the power supply switching module 30, so that electric energy in the abnormal power failure process of the main power supply 21 is fully utilized, stable operation of the vehicle-mounted video monitoring processing system is ensured, stable working time of the vehicle-mounted video monitoring device 60 of the vehicle-mounted video monitoring processing system is prolonged, meanwhile, the output voltage of the control voltage management module 50 is maintained at the working voltage of the vehicle-mounted video monitoring device 60, therefore, when the abnormal power failure occurs to the vehicle-mounted video monitoring device 60, loss of monitoring video is avoided, quality of monitoring video is improved, energy is saved, and size of a standby battery is reduced.
Example two
Fig. 2 is a schematic structural diagram of another vehicle-mounted video monitoring processing system according to a second embodiment of the present invention, as shown in fig. 2, optionally, the voltage management module 50 includes a dynamic adjustment module 53, a voltage reduction module 51, and a voltage boost module 52;
the voltage management module 50 is electrically connected to a voltage output terminal i of the control module, the dynamic adjustment module 53 is configured to adjust an output voltage of the voltage management module 50 according to a control signal of the control module 10, wherein the dynamic adjustment module 53 controls the voltage reduction module 51 to reduce the output voltage of the voltage management module 50, and the dynamic adjustment module 53 controls the voltage boost module 52 to boost the output voltage of the voltage reduction module 51 so as to stabilize the output voltage within a working voltage range of the vehicle-mounted video monitoring apparatus.
Fig. 3 is a schematic structural diagram of a voltage management module 50 of a vehicle-mounted video monitoring processing system according to a second embodiment of the present invention; as shown in fig. 3, for example, the operating voltage of the vehicle-mounted video monitoring apparatus is 12V, and the power supply module 20 supplies a power voltage to the voltage management module 50 that is greater than 12V, that is, the output voltage of the voltage management module 50 is greater than 12V, so that the dynamic adjustment module 53 needs to control the voltage reduction module 51 to reduce the output voltage of the voltage management module 50 to 12V and output the reduced output voltage to the vehicle-mounted video monitoring apparatus. When the vehicle encounters a condition that the power supply voltage drops due to vehicle starting or load change, if the output voltage of the voltage reduction module 51 is smaller than the preset value, the voltage reduction module 51 still reduces the output voltage of the voltage management module 50 at this time, and the output voltage cannot reach the working voltage of the vehicle-mounted video monitoring device 60, so that the dynamic adjustment module 53 adjusts the voltage reduction of the voltage reduction module 51 on the output voltage, if the output voltage of the voltage reduction module 51 cannot reach the working voltage of the vehicle-mounted video monitoring device 60 at this time, the dynamic adjustment module 53 controls the voltage boosting module 52 to boost the output voltage of the voltage reduction module 51, so that the voltage output to the vehicle-mounted video monitoring device is stabilized at 12V, and the power supply stability of the vehicle-mounted video monitoring device is maintained. When the power supply system of the vehicle encounters an abnormal power failure condition, the control module sequentially controls the compensation module and the standby power supply 22 to supply power to the vehicle-mounted video monitoring device 60, wherein when the power supply system encounters an abnormal power failure condition, the control module preferentially controls the compensation module to supply power to the vehicle-mounted video monitoring device 60; when the power supply voltage of the compensation module cannot meet the requirement of the vehicle-mounted video monitoring device 60 during operation, the control module controls the standby power supply 22 to supply power to the vehicle-mounted video monitoring device 60, the power supply voltage of the vehicle-mounted video monitoring device is maintained, the stable operation time of the vehicle-mounted video monitoring device is prolonged, and therefore the quality of the monitoring video is improved. Optionally, when the power supply system of the vehicle encounters an abnormal power outage condition, the control module controls the compensation module and the standby power supply 22 to supply power only to the main storage module of the vehicle-mounted video monitoring system, so as to ensure that video data is completely stored when the power supply system of the vehicle encounters an abnormal power outage condition.
Referring to fig. 2 and 3, optionally, the backup power supply 22 includes a farad capacitor 221 and a backup battery 222, and when the power supply switching module 30 gates the backup power supply 22 to supply power to the vehicle-mounted video monitoring apparatus 60, the farad capacitor 221 and the backup battery 222 are sequentially used to supply power to the vehicle-mounted video monitoring apparatus 60.
When the power supply system of the vehicle encounters an abnormal power failure condition, the control module 10 controls the power supply switching module 30 to switch the standby power supply 22 to supply power to the vehicle-mounted video monitoring device 60, after the power supply switching module 30 gates the standby power supply 22, the farad capacitor 221 in the standby power supply 22 preferentially supplies power to the vehicle-mounted video monitoring device 60, and meanwhile, the standby battery 222 in the standby power supply 22 supplies power to the vehicle-mounted video monitoring system; when the capacity of the farad capacitor 221 is not enough to ensure the normal operation of the vehicle-mounted video monitoring device 60, the backup battery 222 in the backup power source 22 supplies power to the vehicle-mounted video monitoring device 60 and the vehicle-mounted video monitoring system simultaneously. When the power supply system of the vehicle encounters an abnormal power failure condition, the vehicle-mounted video monitoring device 60 and the main storage module of the vehicle-mounted video monitoring system can both be stably powered, and complete storage of video data is guaranteed when the power supply system of the vehicle encounters the abnormal power failure condition.
As shown in fig. 2, optionally, a collision detection module 110 and an exception storage module 90 are further included, where the exception storage module 90 includes at least two storage devices;
the collision detection module 110 is electrically connected to the second communication terminal m of the control module 10, and is configured to generate a collision interrupt signal when detecting that the vehicle has a collision and send the collision interrupt signal to the control module 10;
the abnormal storage module 90 is electrically connected to the third communication terminal n of the control module 10, and the control module 10 is further configured to cut off the power supply of the main storage module 70 when receiving the collision interrupt signal, and simultaneously store the video data of the vehicle-mounted video monitoring apparatus in the abnormal storage module 90.
The collision detection module 110 includes a gravity sensor, and can sense the change of an acceleration force through the gravity sensor, where the acceleration force is a force applied to an object during acceleration, and various movement changes such as shaking, falling, rising, and falling can be converted into an electrical signal by the gravity sensor and transmitted to the control module 10 for processing; illustratively, when the vehicle encounters a collision or an emergency to perform emergency braking during driving, the collision detection module 110 generates a collision interrupt signal and sends the collision interrupt signal to the control module 10 through the second communication terminal m of the control module 10, the control module 10 immediately generates a power-off signal and transmits the power-off signal to the main storage module 70 to cut off the power supply of the main storage module 70, and meanwhile, the control module 10 transmits a storage signal to the abnormal storage module 90 through the third communication terminal n to store the video data of the vehicle-mounted video monitoring device to the abnormal storage module 90, thereby avoiding that the monitoring video is lost in an emergency.
As shown in fig. 2, the exception storage module 90 optionally includes a FLASH memory 91 and an SD memory card 92.
The vehicle-mounted video monitoring processing system adopts a double backup mode, so that double backup of video data is ensured when the vehicle-mounted video monitoring device is abnormally powered down or collided, and loss of monitoring video data is avoided. The FLASH memory 91 has good impact resistance and can be welded and fixed.
As shown in fig. 2, optionally, the main storage module 70 includes a serial hard disk 71 and a hard disk protection unit 72, and the hard disk protection unit 72 is configured to cut off power of the serial hard disk 71.
When the main storage module 70 receives the power-off signal transmitted by the control module 10, the hard disk protection unit acts to cut off the power supply of the serial hard disk, so as to prevent the serial hard disk from being accidentally impacted during the read-write operation, thereby effectively protecting the video data stored in the serial hard disk.
As shown in fig. 2, optionally, an EMC module 100 is further included, and the main power supply 21 is electrically connected to the control module 30 through the EMC module 100.
The EMC module 100 protects the main power supply 21 from external electromagnetic interference, and also prevents electromagnetic noise generated when the main power supply 21 operates from affecting the operation of other surrounding electronic products.
As shown in fig. 2, optionally, the main power supply 21 is electrically connected to the backup power supply 22, and the main power supply 21 is also used for charging the backup power supply 22.
When the main power supply 21 supplies power normally, the backup power supply 22 can also be charged, so that when the power supply is switched to the backup power supply 22 in an abnormal power failure condition, the electric quantity of the backup power supply 22 is sufficient, and specifically, the main power supply 21 charges the farad capacitor 221 and the backup battery 222 in the backup power supply 22.
EXAMPLE III
Fig. 4 is a flowchart of a vehicle-mounted video monitoring processing method according to a third embodiment of the present invention, as shown in fig. 4, this embodiment is applicable to a vehicle-mounted video monitoring apparatus in an abnormal power failure situation, and the method may be executed by a vehicle-mounted video monitoring processing system, and specifically includes the following steps:
and S410, acquiring the output voltage of the main power supply in real time when the main power supply supplies power to the vehicle-mounted video monitoring device.
The vehicle-mounted video monitoring device comprises a vehicle-mounted video monitoring processing system; when the main power supply supplies power to the vehicle-mounted video monitoring device, the voltage acquisition module acquires the output voltage of the main power supply in real time and monitors the working state of the main power supply.
And S420, when abnormal power failure of the output voltage of the main power supply is monitored, dynamically adjusting the output voltage of the vehicle-mounted video monitoring device to be maintained at the working voltage of the vehicle-mounted video monitoring device through the voltage management module.
When the voltage acquisition module feeds back the acquired abnormal output voltage signal to the control module, the control module controls the voltage management module to dynamically adjust the voltage output to the vehicle-mounted video monitoring device, the working voltage of the voltage is stably output to the vehicle-mounted video monitoring device, specifically, the voltage reduction module and the voltage boosting module are controlled by the dynamic adjustment module to adjust the output voltage of the voltage management module, the working voltage of the voltage stabilization management module is stabilized to the working voltage of the vehicle-mounted video monitoring device, and the stable working time of the vehicle-mounted video monitoring device is prolonged.
The voltage management module comprises a dynamic adjustment module, a voltage reduction module and a voltage boosting module; for example, the operating voltage of the vehicle-mounted video monitoring device is 12V, when the output voltage of the main power supply is normal, the power supply voltage of the power supply module to the voltage management module is greater than 12V, that is, the output voltage of the voltage management module is greater than 12V, so that the dynamic adjustment module needs to control the voltage reduction module to reduce the output voltage of the voltage management module to 12V and then output the reduced voltage to the vehicle-mounted video monitoring device. When the vehicle encounters the condition that the power supply voltage drops due to vehicle starting or load change, namely, when the output voltage of the main power supply abnormally fails, if the output voltage of the voltage reduction module is smaller than a preset value, the voltage reduction module still reduces the output voltage of the voltage management module at the moment, the output voltage cannot reach the working voltage of the vehicle-mounted video monitoring device, so that the dynamic adjustment module needs to adjust the voltage reduction of the voltage reduction module on the output voltage, if the output voltage cannot reach the working voltage of the vehicle-mounted video monitoring device at the moment, the dynamic adjustment module further controls the voltage boosting module to boost the output voltage of the voltage reduction module to ensure that the voltage output to the vehicle-mounted video monitoring device is stabilized at 12V, the power supply stability of the vehicle-mounted video monitoring device is maintained, and the quality of the monitoring video is improved.
And S430, when the output voltage of the main power supply is determined to be less than or equal to the set threshold value, sequentially controlling the compensation module to supply power to the vehicle-mounted video monitoring device and switching to a standby power supply to supply power to the vehicle-mounted video monitoring device.
When the output voltage signal of the main power supply acquired by the voltage acquisition module is smaller than or equal to a set threshold value, the control module controls the compensation module to supply power to the vehicle-mounted video monitoring device and controls the power supply switching module to switch the power supply in sequence, and the standby power supply supplies power to the vehicle-mounted video monitoring device. Illustratively, when the output voltage of the main power supply is abnormally powered down, the voltage is gradually reduced, the voltage acquisition module feeds the acquired output voltage back to the control module, when the control module judges that the output voltage of the main power supply is less than or equal to a set threshold value, the control module controls the compensation module to acquire electric energy in the power-down process of the main power supply and preferentially controls the compensation module to supply power to the vehicle-mounted video device, when the power supply voltage of the compensation module cannot meet the working condition of the vehicle-mounted video monitoring device, the control module controls the power supply switching module to perform power supply switching, a farad capacitor in a standby power supply is communicated to supply power to the vehicle-mounted video monitoring device, when the power supply voltage of the farad capacitor cannot meet the working condition of the vehicle-mounted video monitoring device, a standby battery in the standby power supply is communicated to supply power to the vehicle-mounted video monitoring device, and, the dynamic adjustment module performs voltage reduction or voltage increase adjustment on the output voltage of the voltage management module so as to meet the requirement of the working voltage of the vehicle-mounted video monitoring device; when the compensation module or the standby power supply supplies power to the vehicle-mounted video monitoring device, the dynamic adjustment module does not adjust. Specifically, a compensation control end of the control module sends a power supply signal, and the compensation module supplies power to the vehicle-mounted video monitoring device; the control output end of the control module sends a switching signal, and the control end of the power supply switching module receives the switching signal; the main power supply is electrically disconnected with the switching end of the power supply switching module, the switching end of the power supply switching module is electrically connected with the standby power supply, and the standby power supply supplies power to the vehicle-mounted video monitoring device. The problem that monitoring video data are lost in the abnormal power failure process of the main power supply is solved, and meanwhile, the electric energy in the abnormal power failure process of the main power supply is fully utilized, so that the energy is saved; set up farad capacitor and stand-by battery in stand-by power supply, farad capacitor has the discharge ability of transient state heavy current, fine extension on-vehicle video monitoring device's power supply time, consequently can reduce stand-by battery's volume, further reduced the volume of stand-by energy, improved the security performance simultaneously.
And S440, storing the video data of the vehicle-mounted video monitoring device in real time through the main storage module.
The main storage module is electrically connected with the first communication end of the control module and stores video data shot by the vehicle-mounted video monitoring device to the main storage module.
According to the technical scheme of the embodiment of the invention, the voltage acquisition module in the vehicle-mounted video monitoring processing system acquires the output voltage of the main power supply and feeds the output voltage back to the control module, and when abnormal power failure occurs, the standby power supply is switched to provide stable voltage for the vehicle-mounted video monitoring device, so that the problem of monitoring video data loss in the abnormal power failure process of the main power supply is solved; the voltage management module controls the output voltage of the voltage management module to be maintained at the working voltage of the vehicle-mounted video monitoring device according to the output voltage of the power supply module, the problem that the voltage provided for the vehicle-mounted video monitoring device fluctuates in the process of abnormal power failure of a main power supply and in the process of switching the main power supply to a standby power supply is solved, namely, the power supply is unstable, the quality problem of monitoring videos is reduced, the monitoring videos are prevented from being lost, the stability of power supply for the vehicle-mounted video monitoring device is improved, and the quality of the monitoring videos is improved.
On the basis of the technical scheme, the vehicle-mounted video monitoring processing method further comprises the following steps:
when the vehicle collision is detected, the power supply of the main storage module is cut off;
when the vehicle encounters a collision or an emergency to perform emergency braking in the driving process, the collision detection module generates a collision interrupt signal, and when the control module detects the collision interrupt signal, the control module immediately generates a power-off signal to transmit to the main storage module, cuts off the power supply of the main storage module, prevents the main storage module from being accidentally impacted during read-write operation, and therefore video data stored in the hard disk is effectively protected.
And storing the video data of the vehicle-mounted video monitoring device to an abnormal storage module, wherein the abnormal storage module comprises at least two storage devices.
When the vehicle encounters collision or emergency braking in the driving process, the control module cuts off the power supply of the main storage module, meanwhile, the control module transmits a storage signal to the abnormal storage module through the third communication terminal, and stores video data of the vehicle-mounted video monitoring device to the abnormal storage module, so that loss of important monitoring videos in emergency is avoided.
Example four
Fig. 5 is a schematic structural diagram of a vehicle-mounted video monitoring system according to a fourth embodiment of the present invention, and as shown in fig. 5, the vehicle-mounted video monitoring system includes at least one vehicle-mounted video monitoring device B and a vehicle-mounted video monitoring processing system a according to the first aspect of the present invention, and the vehicle-mounted video monitoring processing system a is electrically connected to the vehicle-mounted video monitoring device B. For example, the vehicle-mounted video monitoring system may be a car recorder or the like.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. An on-board video surveillance processing system, comprising: the device comprises a control module, a power supply module, a voltage acquisition module, a power supply switching module, a voltage management module, a compensation module and a main storage module;
the power supply module comprises a main power supply and a standby power supply and is used for supplying power to the vehicle-mounted video monitoring device;
the power supply switching module comprises a control end, a fixed end and two switching ends, wherein the two switching ends are respectively electrically connected with the main power supply and the standby power supply, the fixed end is electrically connected with a voltage input end of the control module, the control end is electrically connected with a control output end of the control module, and the power supply switching module is used for gating the main power supply or the standby power supply;
the voltage acquisition module is electrically connected with a voltage feedback end of the control module and is used for acquiring the output voltage of the main power supply in real time and feeding the output voltage back to the control module;
the compensation module comprises an electric energy acquisition end, a signal receiving end and an electric energy output end, the electric energy acquisition end is electrically connected with the main power supply, the signal receiving end is electrically connected with a compensation control end of the control module, the electric energy output end is electrically connected with the vehicle-mounted video monitoring device, and the compensation module is used for acquiring electric energy in the power-down process of the main power supply and supplying power to the vehicle-mounted video monitoring device;
the control module is used for sequentially controlling the compensation module to supply power to the vehicle-mounted video monitoring device and the power supply switching module to be switched to the standby power supply when the output voltage of the main power supply acquired by the voltage acquisition module is determined to be less than or equal to a set threshold value;
the second input end of the voltage management module is electrically connected with the voltage output end of the control module, the output end of the voltage management module is used for being electrically connected with the vehicle-mounted video monitoring device, and the voltage management module is used for controlling the output voltage of the voltage management module to be maintained at the working voltage of the vehicle-mounted video monitoring device according to the output voltage of the power supply module;
the main storage module is electrically connected with the first communication end of the control module and used for storing video data of the vehicle-mounted video monitoring device.
2. The vehicle-mounted video monitoring processing system according to claim 1, wherein the voltage management module comprises a dynamic adjustment module, a voltage reduction module and a voltage boosting module;
the voltage management module is electrically connected with a voltage output end of the control module, the dynamic adjustment module is used for adjusting the output voltage of the voltage management module according to a control signal of the control module, the dynamic adjustment module controls the voltage reduction module to reduce the output voltage of the voltage management module, and the dynamic adjustment module controls the voltage boosting module to boost the output voltage of the voltage reduction module.
3. The vehicle-mounted video monitoring processing system according to claim 1, wherein the backup power supply comprises a farad capacitor and a backup battery, and the power supply switching module gates the backup power supply to supply power to the vehicle-mounted video monitoring device, and the farad capacitor and the backup battery are sequentially used to supply power to the vehicle-mounted video monitoring device.
4. The vehicle-mounted video monitoring processing system according to claim 1, further comprising a collision detection module and an anomaly storage module, wherein the anomaly storage module comprises at least two storage devices;
the collision detection module is electrically connected with the second communication end of the control module and used for generating a collision interrupt signal and sending the collision interrupt signal to the control module when a vehicle is detected to collide;
the abnormal storage module is electrically connected with a third communication end of the control module, and the control module is further used for cutting off the power supply of the main storage module when receiving the collision interrupt signal and storing the video data of the vehicle-mounted video monitoring device to the abnormal storage module.
5. The vehicle-mounted video monitoring processing system according to claim 4, wherein the main storage module comprises a serial hard disk and a hard disk protection unit, and the hard disk protection unit is used for cutting off the power supply of the serial hard disk.
6. The vehicle video surveillance processing system of claim 1, further comprising an EMC module, the main power supply being electrically connected to the control module through the EMC module.
7. The vehicle video surveillance processing system of claim 1, wherein the primary power source is electrically connected to the backup power source, the primary power source further configured to charge the backup power source.
8. A vehicle-mounted video monitoring processing method is characterized by comprising the following steps:
when a main power supply supplies power to the vehicle-mounted video monitoring device, acquiring the output voltage of the main power supply in real time;
when abnormal power failure of the output voltage of the main power supply is monitored, the output voltage of the vehicle-mounted video monitoring device is dynamically regulated by a voltage management module to be maintained at the working voltage of the vehicle-mounted video monitoring device;
when the output voltage of the main power supply is determined to be smaller than or equal to a set threshold value, sequentially controlling a compensation module to supply power to a vehicle-mounted video monitoring device and switching to a standby power supply to supply power to the vehicle-mounted video monitoring device;
and storing the video data of the vehicle-mounted video monitoring device in real time through a main storage module.
9. The vehicle-mounted video monitoring processing method according to claim 8, further comprising:
when the vehicle collision is detected, the power supply of the main storage module is cut off;
and storing the video data of the vehicle-mounted video monitoring device to an abnormal storage module, wherein the abnormal storage module comprises at least two storage devices.
10. A vehicle-mounted video monitoring system, characterized by comprising at least one vehicle-mounted video monitoring device and a vehicle-mounted video monitoring processing system according to any one of claims 1 to 7, wherein the vehicle-mounted video monitoring processing system is electrically connected with the vehicle-mounted video monitoring device.
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