CN108881705A - A kind of camera control unit and video camera - Google Patents
A kind of camera control unit and video camera Download PDFInfo
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- CN108881705A CN108881705A CN201710339576.4A CN201710339576A CN108881705A CN 108881705 A CN108881705 A CN 108881705A CN 201710339576 A CN201710339576 A CN 201710339576A CN 108881705 A CN108881705 A CN 108881705A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/65—Control of camera operation in relation to power supply
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
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Abstract
The present invention provides a kind of camera control unit and video cameras, the camera control unit includes detecting module, control module, signal processing module, power supply and energy supply control module, and the power supply is powered to the detecting module, the control module and the signal processing module；The input terminal of the detecting module receives detectable signal, and output end is connected with the input terminal of the control module；The output end of the control module is connected with the control terminal of the energy supply control module；The input terminal of the energy supply control module is connected with the output end of the power supply, and output end is connected with the power input of the signal processing module；The control module is configured as when the detectable signal for receiving the detecting module transmission, and the signal processing module sends enable signal to the energy supply control module, the power supply is made to power to the signal processing module in off-position.The present invention can reduce video camera power consumption, extend service time of battery.
Description
Technical field
The present invention relates to monitoring technology field, in particular to a kind of camera control unit and video camera.
Background technique
With the development of science and technology, video camera using more and more common.For example, video camera is used in protection and monitor field
A series of security protection activities such as safety inspection, real-time control, investigation and evidence collection, for we provide many convenient.
In order to save the memory space of video camera, video camera is connect when being monitored with Passive Infrared Sensor, works as quilt
When dynamic infrared sensor does not detect target, video camera is in preview state, i.e., without the storage of video；When passive infrared senses
When device detects target, video camera is sent a signal to, so that video camera starts to record a video, that is, carries out the storage of video.
In the implementation of the present invention, the inventors discovered that having at least the following problems in the prior art：
For the video camera using dry cell or storage battery power supply, since the electricity of dry cell or accumulators store is limited,
When battery capacity is too low, needs replacing battery or charge for battery.Power consumption still compares when video camera is in preview state
Height needs to frequently replace the battery of video camera or charges.
Summary of the invention
In view of this, the present invention provides a kind of camera supervised device and video camera, the power consumption of video camera can be reduced, is prolonged
Long service time of battery.
Specifically, including technical solution below：
In a first aspect, the present invention provides a kind of camera control unit, including at detecting module, control module, signal
Manage module, power supply and energy supply control module, wherein
The power supply is powered to the detecting module, the control module and the signal processing module；
The input terminal of the detecting module receives detectable signal, and output end is connected with the input terminal of the control module；
The output end of the control module is connected with the control terminal of the energy supply control module；
The input terminal of the energy supply control module is connected with the output end of the power supply, output end and the signal processing
The power input of module is connected；
The control module is configured as when the detectable signal for receiving the detecting module transmission, and the signal processing
Module sends enable signal in off-position, to the energy supply control module, makes the power supply to the signal processing module
Power supply.
Selectively, the control module is additionally configured to that the detecting module hair ought be not received by the given time
The detectable signal sent, and the signal processing module sends disable signal to the energy supply control module, makes in power-up state
The power supply stops powering to the signal processing module.
Selectively, the detecting module includes passive infrared detector PIR, and the PIR, which is configured as working as, detects prison
When having predeterminated target in control region, target detection signal is sent to the control module, makes the control module in the signal
Processing module sends enable signal in off-position, to the energy supply control module, to make the power supply to the signal
Processing module power supply.
Selectively, the detecting module includes sound pick-up, and the sound pick-up is configured as when collecting sound, to institute
It states control module and sends sound-detection signal, the control module is made to be greater than preset threshold and described in the sound-detection signal
Signal processing module sends enable signal in off-position, to the energy supply control module, to make the power supply to described
Signal processing module power supply.
Selectively, the camera control unit further includes wireless communication module, and the power supply is to the wireless communication
Module for power supply；The output end of the signal processing module is connected with the input terminal of the wireless communication module, the signal processing
Module is configured as sending video or image data to Cloud Server by the wireless communication module.
Selectively, the camera control unit further includes wireless communication module, and the power supply is to the wireless communication
Module for power supply；The output end of the wireless communication module is connected with the input terminal of the control module, the control module also by
It is configured to when the enable instruction for receiving the wireless communication module transmission, and the signal processing module is in off-position
When, enable signal is sent to the energy supply control module, so that the power supply be made to power to the signal processing module.
Selectively, the control module is additionally configured to forbid indicating when receive that the wireless communication module sends
Information, and the signal processing module sends disable signal to the energy supply control module in power-up state, to make described
Power supply stops powering to the signal processing module.
Selectively, the camera control unit further includes wireless communication module, and the power supply is to the wireless communication
Module for power supply；The output end of the wireless communication module is connected with the input terminal of the signal processing module, the signal processing
The output end of module is connected with the input terminal of the control module, and the signal processing module is additionally configured to described when receiving
When what wireless communication module was sent forbids indicating information, letter is forbidden to energy supply control module transmission by the control module
Number, and the power supply is made to stop powering to the signal processing module.
Selectively, the camera control unit further includes the first power management module, input terminal and the power supply
Output end be connected, output end is connected with the input terminal of the control module, and first power management module is configured as
The voltage value that the power supply provides is converted to the load voltage value of the control module.
Selectively, the camera control unit further includes second source management module, input terminal and the power supply
Output end be connected, output end is connected with the input terminal of the multiple submodule of the signal processing module, the second source
The voltage value that management module is configured as providing power supply is converted to the specified electricity of the multiple submodule of the signal processing module
Pressure value.
Second aspect, the present invention also provides a kind of video cameras, including memory module, image sensor module and first party
Camera control unit described in face, the memory module are used to store video and image that the camera control unit is sent
Data, described image sensor module are used to being converted to the optical signal of acquisition into electric signal and are sent to the camera control and fill
It sets.
The beneficial effect of technical solution provided in an embodiment of the present invention：
The present invention provides a kind of video cameras, including detecting module, control module, signal processing module, power supply and power supply
Control module.When control module receives the detectable signal of detecting module transmission, and signal processing module is in off-position,
Power supply is powered to signal processing module, and control video camera starts to record；When signal processing module is in off-position, and control mould
When block does not receive the detectable signal of detecting module transmission, power supply does not power to signal processing module, to reduce video camera
Power consumption extends the service time of battery of video camera.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of block diagram of camera control unit in one embodiment of the invention；
Fig. 2 is a kind of block diagram of camera control unit in one embodiment of the invention；
Fig. 3 is a kind of example block diagram of video camera in one embodiment of the invention；
Fig. 4 is the block diagram of the first power management module in one embodiment of the invention；
Fig. 5 is the block diagram of second source management module in one embodiment of the invention；
Fig. 6 is the power management module exemplary diagram of camera control unit in one embodiment of the invention；
Fig. 7 is the flow chart of video camera starting in one embodiment of the invention；
Fig. 8 is a kind of block diagram of video camera in one embodiment of the invention.
Specific embodiment
To keep technical solution of the present invention and advantage clearer, below in conjunction with attached drawing to embodiment of the present invention make into
One step it is described in detail.
One embodiment of the invention provides a kind of camera control unit, as shown in Figure 1, including detecting module 101, control
Module 102, signal processing module 103, power supply 104 and energy supply control module 105, wherein
Power supply 104 is powered to detecting module 101, control module 102 and signal processing module 103；
The input terminal of detecting module 101 receives detectable signal, and output end is connected with the input terminal of control module 102；
The output end of control module 102 is connected with the control terminal of energy supply control module 105；
The input terminal of energy supply control module 105 is connected with the output end of power supply 104, output end and signal processing module
103 power input is connected；
Control module 102 is configured as when the detectable signal for receiving the transmission of detecting module 101, and signal processing module
103 in off-position, sends enable signal to energy supply control module 105, power supply 104 is made to power to signal processing module 103.
Camera control unit provided in this embodiment, when control module 102 receives the detection of the transmission of detecting module 101
Signal and signal processing module 103 is in off-position, control module 102 send enable signal to energy supply control module 105, make
Power supply 104 is powered to signal processing module 103, starts to record to control video camera；When signal processing module 103 is in power-off shape
When state but control module 102 do not receive the detectable signal of the transmission of detecting module 101, power supply 104 is not to signal processing module 103
Power supply, video camera is without recording, and so as to reduce the power consumption of video camera, extend the battery of video camera uses the time.
In the present embodiment, control module can be MCU (Microcontroller Unit, micro-control unit), can also
To be that by other processors of the function of control module；Signal processing module can be DSP (Digital Signal
Processing, Digital Signal Processing) module, it is also possible to can be realized other processors of the function of signal processing module.
Below using control module be MCU, signal processing module is illustrated as DSP module.
As shown in Fig. 2, power supply 204 is powered to detecting module 201, MCU202 and DSP module 203.Power supply 204 includes often supplying
Electric module and normal sleep block, wherein normal power supply module is used for detecting module 201 and MCU202 uninterrupted power supply；Normal suspend mode
Module receives the enable signal of MCU202 transmission in power management module 205, and DSP module 203 starts in off-position
It powers to DSP module 203；The enable signal of MCU202 transmission is not received in power management module 205, and DSP module 203 exists
When off-position, do not power to DSP module 203；The disable signal of MCU202 transmission is received in power management module 205, and
DSP module 203 stops powering to DSP module 203 in off-position.Referring to Fig. 5, the battery interface of power supply is dry for being packed into
Two output ends of battery, power supply are connected with the input terminal of the POWER of MCU (power key) and power management module respectively, to MCU
It powers with power management module.
As shown in Fig. 2, 201 input terminal of detecting module is for receiving detectable signal, the input terminal of output end and MCU202
It is connected, for received detectable signal to be sent to MCU202.
As shown in figure 3, detecting module 201 can be PIR (Passive Infrared Sensor, passive infrared detection
Device), the output end of PIR and the GPIO (General Purpose Input Output, universal input/output) of MCU are connected, when
PIR is detected in monitoring area when having predeterminated target, sends target detection signal to MCU202.Predeterminated target refers generally to people.PIR
Itself do not emit any energy and only passively receive, infra-red radiation of the detection from environment, can be between 8~12 μm by wavelength
Infrared signal is transformed into electric signal, and human body is to the infrared signal in the external radiation wave-length coverage.Once there is human body infrared radiation
Come in, PIR will generate high level, and be sent to MCU202, and the high level that PIR is generated at this time is target detection signal.
Detecting module 201 is also possible to sound pick-up, referring to Fig. 3, such as MIC (microphone, microphone).Work as sound pick-up
When collecting sound, sound-detection signal is converted sound into, and send sound-detection signal to MCU202.Referring to Fig. 3, detection
Module 201 may also include operational amplifier, and the input terminal of operational amplifier is connected with sound pick-up, the mould of output end and MCU202
Number converter ADC is connected.The sound-detection signal that sound pick-up is sent is amplified and is sent to ADC by operational amplifier, and by
ADC converts analog signals into digital signal.
In the present embodiment, as shown in figure 3, detecting module 201 can also include PIR and sound pick-up simultaneously.In this way, working as pickup
When the sound that device receives is smaller to cause MCU202 that cannot send enable signal to energy supply control module 205, PIR can play auxiliary
Effect is helped, the ability that detecting module 201 detects target is improved.For example, the sound ratio when the human hair in camera supervised region out
It is smaller, cause MCU202 not send enable signal to energy supply control module 205, then video camera not will do it recording, and detect mould
When block 201 includes PIR and sound pick-up simultaneously, PIR can be detected the infrared signal of human body radiation and be converted to target detection signal
It is sent to MCU202, and then MCU202 sends enable signal to energy supply control module 205, and makes power supply 204 to DSP module 203
Power supply, avoids the occurrence of the case where sound pick-up cannot effectively detect target.
MCU202 is used to receive the detectable signal of the transmission of detecting module 201, and sends enabled letter to energy supply control module 205
Number.As shown in Fig. 2, the input terminal of MCU202 is connected with the output end of detecting module 201, output end and energy supply control module
205 control terminal is connected.Referring specifically to Fig. 3, the GPIO of MCU is connected with the control terminal of energy supply control module, controls mould to power supply
Block 205 sends signal.
When MCU202 receives the detectable signal of the transmission of detecting module 201, and DSP module 203 is in off-position, to electricity
Source control module 205 sends enable signal, so that power supply 204 is powered to DSP module 203.If detector 201 is PIR, when
MCU202 receives the target detection signal of PIR transmission, and DSP module 203 is in off-position, to energy supply control module 205
Enable signal is sent, so that power supply 204 is powered to DSP module 203；If detector 201 is sound pick-up and operational amplifier, when
After the ADC of MCU202 receives the sound-detection signal of operational amplifier transmission, digital signal is converted to.MCU202 judgement number
Whether signal is greater than preset threshold, and when judging that digital signal is greater than preset threshold, and DSP module 203 is in off-position,
Enable signal is sent to energy supply control module 205, so that power supply 204 is powered to DSP module 203；When DSP module 203 is powering off
State, but MCU202 judges that digital signal no more than preset threshold, does not send enable signal, electricity to energy supply control module 205
Source 204 does not power to DSP module 203.For example, MCU202 receives pickup when not having sound or sound very little in environment
After the sound-detection signal that device is sent, judge that the digital signal that sound-detection signal is converted to is not more than preset threshold, then
Enable signal is not sent to energy supply control module 205；When someone's dialogue or thing are dropped in environment, when sound is larger,
After MCU202 receives the sound-detection signal of sound pick-up transmission, the digital signal for judging that sound-detection signal is converted to is big
In preset threshold, then enable signal is sent to energy supply control module 205.
When MCU202 is not received by the detectable signal of the transmission of detecting module 201, and DSP module 203 in the given time
In power-up state, disable signal is sent to energy supply control module 205, so that power supply 204 stops powering to DSP module 203.This
Sample, MCU202 can control in time power supply 204 and stop powering to DSP module 203 when target is not detected in detecting module 201, section
Save the power consumption of video camera.In the present embodiment, the predetermined time can be set as needed, for example can be set as 30s-1min.
The signal that energy supply control module 205 is used to receive MCU202 transmission makes power supply 204 power or stop to DSP module 203
Only power to DSP module 203.As shown in Fig. 2, the control terminal of energy supply control module 205 is connected with the output end of MCU202, it is used for
Receive enable signal and disable signal that MCU202 is sent；Its input terminal is connected with the output end of power supply, output end and DSP mould
The power input of block 203 is connected.Referring specifically to Fig. 3, the control terminal of energy supply control module is connected with the GPIO of MCU, input
End is connected with an output end of power supply, and output end is connected with the POWER of DSP module.
When energy supply control module 205 receives the enable signal of MCU202 transmission, and DSP module 203 is in off-position,
Control signal is connected to output end, and power supply 204 is made to power to DSP module 203；When energy supply control module 205 receives
The disable signal that MCU202 is sent, and DSP module 203, in power-up state, control signal is not connected to output end, makes power supply
204 stop powering to DSP module 203.
In the present embodiment, energy supply control module 205 can be control switch, such as MOS (Metal Oxide
Semiconductor, metal-oxide semiconductor (MOS)) pipe.When the control terminal of control switch receives the enabled letter of MCU202 transmission
Number and DSP module 203 in off-position, control switch open, thus make power supply 204 to DSP module 203 power；Work as control
The control terminal of switch receives the disable signal of MCU202 transmission and DSP module 203 in power-up state, and control switch disconnects,
To make power supply 204 stop powering to DSP module 203.
As shown in Fig. 2, the power input of DSP module 203 is connected with the output end of energy supply control module 205, for connecing
It receives power supply 204 and passes through the electric power that power management module 205 provides.When DSP module 203 is in power-up state, control video camera is opened
Begin video recording；When DSP module 203 is in off-position, video camera is without video recording.Referring specifically to Fig. 3, the POWER of DSP module with
One input terminal of energy supply control module is connected, and receives the electric power that power supply is provided by energy supply control module.
In the present embodiment, as shown in Fig. 2, camera control unit may also include wireless communication module 206.Power supply 204
Normal power supply module to wireless communication module 206 power.
The input terminal of wireless communication module 206 is connected with the output end of DSP module 203, and wireless communication module 206 can incite somebody to action
The video or image data of DSP module 203 are sent to Cloud Server.Referring specifically to Fig. 3, the SDIO (Secure of DSP module
Digital Input and Output Card, secure digital input-output card) with the universal input of wireless communication module/defeated
Outlet is connected, and video or image data are sent to Cloud Server by SDIO by DSP module.In this way, can be remote by Cloud Server
Journey checks the picture of the video that video camera is recorded and shooting, the case where checking monitoring region.
Further, in the present embodiment, wireless communication module 206 can pass through the instruction to MCU202 transmission Cloud Server
Information controls power supply of the power supply 204 to DSP module 203.As shown in Fig. 2, the output end and MCU202 of wireless communication module 206
Input terminal connection.Referring specifically to Fig. 3, universal input/output end of wireless communication module is connected with the GPIO of MCU, sends out to MCU
Send instruction information.
The enable instruction of Cloud Server can be sent to MCU202 by wireless communication module 206, so that MCU202 is received
To enable instruction, and DSP module 203 sends enable signal to energy supply control module 205, to make in off-position
Power supply 204 is powered to DSP module 203.In this way, when needing the case where remotely checking the monitoring area of video camera, and DSP module
203 when being in off-position, and Cloud Server and makes power supply 204 to DSP module by sending enable instruction to MCU202
203 power supplies, control video camera start to record a video, and realize the long-range control to video camera.Meanwhile wireless communication module 206 can also incite somebody to action
The video or image data of DSP module 203 are sent to Cloud Server.
Cloud Server can also be forbidden indicating that information is sent to MCU202 by wireless communication module 206, so that MCU202 connects
It receives and forbids indicating that information and DSP module 203 in power-up state, send disable signal to energy supply control module 205, to make
Power supply 204 stops powering to DSP module 203.In this way, when not needing to be monitored the monitoring area of video camera, and DSP module
203 when being in power-up state, and Cloud Server and stops power supply 204 to DSP mould by forbidding indicating information to MCU202 transmission
Block 203 is powered, and the power consumption of video camera is reduced.
As another embodiment, in the present embodiment, wireless communication module 206 can control electricity by DSP module 203
Power supply of the source 204 to DSP module 203.As shown in Fig. 2, the input terminal of the output end of wireless communication module 206 and DSP module 203
It is connected, the output end of DSP module 203 can also be connected with the input terminal of MCU202.Referring specifically to Fig. 3, wireless communication module leads to
It is connected with input/output terminal with the SDIO of DSP module 203, the SPI of DSP module (Serial Peripheral Interface,
Serial Peripheral Interface (SPI)) it is connected with the SPI of MCU.
When DSP module 203 is in power-up state, Cloud Server can be forbidden indicating that information is sent to by wireless communication module
DSP module 203, so that DSP module 203 will forbid indicating that information is sent to MCU202, and then MCU202 is received and is forbidden indicating
After information, disable signal is sent to energy supply control module 205, and power supply 204 is made to stop powering to DSP module 203.
In the present embodiment, wireless communication module 206 can keep heartbeat packet communication, i.e. Cloud Server and nothing with Cloud Server
206 timing of line communication module sends data packet to other side, when wireless communication module 206 can receive cloud service in the given time
The data packet that device is sent illustrates that the two communication is smooth, when wireless communication module 206 does not receive Cloud Server in the given time
The data packet of transmission illustrates that the two not can be carried out efficient communication, then wireless communication module 206 can send prompting message to MCU202
It is fed back, so that MCU202 alarms.Predetermined time can be set as needed, for example may be set to 1min-2min.
It is low-power consumption that wireless communication module 206 and Cloud Server, which keep the process of heartbeat packet communication,.
In the present embodiment, as shown in figure 4, camera control unit may also include the first power management module 207, first
The input terminal of power management module 207 is connected with the output end of power supply 204, and output end is connected with the input terminal of MCU202, uses
The load voltage value of MCU202 is converted in the voltage value for providing power supply 204, so that MCU202 can work under rated voltage,
The case where avoiding the occurrence of the damage of submodule caused by overtension.
In the present embodiment, video camera further includes second source management module 208, as shown in figure 5, second source manages mould
The input terminal of block 208 is connected with the output end of energy supply control module 205, the multiple submodule phase of output end and DSP module 203
Even, for power supply 204 to be converted to the volume of the multiple submodule of DSP module 203 by the voltage that energy supply control module 205 provides
Constant voltage avoids the occurrence of overtension and causes submodule so that the multiple submodule of DSP module 203 can work under rated voltage
The case where block damages.
In the present embodiment, the first power management module and second source management module can be MCU202 and DSP respectively
The submodule of module 203 is also possible to independent module in video camera.
As shown in fig. 6, the exemplary diagram of the power management module for camera control unit.DC/DC (DC-DC) in figure
Converter is used to for input voltage being changed into effectively output fixed voltage, and converter A, B, C, D in figure represent different types of
Voltage changer is buck converter.
The voltage value that the battery of video camera provides is 6V, and 6V voltage is dropped to voltage by DC/DC converter A all the way
3.3V, three tunnels of difference, wherein two-way 3.3V voltage is respectively Passive Infrared Sensor and energy supply control module power supply；Another way
3.3V voltage be divided into after low pressure difference linear voltage regulator is down to 1.8V again the real-time clock that three tunnels are respectively wireless communication module,
The power supply of the power interface of MCU and wireless communication module.
The another way 6V voltage that the battery of video camera provides is down to 5V through DC/DC converter A, is further divided into four tunnels.The first via
5V voltage is down to the sub- module for power supply that 1.8V is DSP module through DC/DC converter B；Second road 5V voltage is converted through DC/DC
Device B is down to another submodule that 1.2V is DSP module and powers；Third road 5V voltage is after DC/DC converter B is down to 3.3V
Be further divided into three tunnels, wherein all the way 3.3V voltage through DC/DC converter C be down to 2.5V be DSP module submodule power, all the way
3.3V voltage is down to the coder that 1.8V is DSP module through DC/DC converter D and powers, and another way 3.3V voltage becomes through DC/DC
Parallel operation D is down to the submodule that 1.5V is image sensor module and powers；4th road 5V voltage is down to 1.5V through DC/DC converter B
It powers for the submodule of image sensor module.
In the present embodiment, after MCU receives signal, DSP module and wifi (wireless communication module) can quickly be opened.
Signal, which is received, from MCU is connected to the flow example figure of Cloud Server as shown in fig. 7, comprises following steps to wifi.
MCU receives signal and wakes up, and judges to wake up reason.Judge it is that detectable signal or wifi hair are sent due to PIR as MCU
When order of losing one's life wakes up, then MCU enables metal-oxide-semiconductor, and reading is photosensitive, obtains environmental light brightness, into normal mode, enables PMOS
(Positive Channel Metal Oxide Semiconductor, P-channel silicon field-effect crystal) pipe；When MCU judges
It is due to when battery capacity is insufficient, wifi wakes up extremely, then alarming.This used time in stage about 5ms.
PMOS tube receives the enable signal that MCU is sent, and makes VBAT (voltage battery, cell voltage) to DSP module
Power supply.After DSP module powers on, that is, start to control ICR (infrared cut reactor, double optical filterings according to environmental light brightness
Piece switch).PMOS, which receives the enable signal that MCU is sent and controls DSP module, powers on used time about 1ms.
After DSP module powers on, starting UBOOT (Universal Boot Loader, universal guiding loading procedure) is simultaneously first
Beginningization sensor (imaging sensor).The first frame data used time about 100ms is obtained, general front cross frame data do not save.This stage
Used time about 150ms.
APP (Application, application program) load is carried out later, while image data is stored in OV788 chip RAM
(RamdomAccessMemory, internal random access memory), this used time in stage about 218ms.
After this, wifi initialization, used time about 21ms are carried out.
After the completion of wifi initialization, wifi is connect with Cloud Server, used time about 400ms.
DSP module starts to control ICR after powering on, and carries out ICR switching, conventional ICR switching needs used time about 500ms, with APP
Load and wifi are initialized while being carried out.In APP load loading procedure, image is temporarily held in RAM, does not spend the time.APP
After the completion of load, image is temporarily held in SDRAM, and (Synchronous Dynamic Random Access Memory is synchronized
Dynamic RAM), the video for the 120MB that the vertical pixel of video is 720P is passed in SDRAM and used with the speed of 2Mbps
When be greater than 60s, can with wifi initialize and wifi connect Cloud Server and carry out simultaneously.After wifi is connected to Cloud Server
The data cached in SDRAM are uploaded to Cloud Server.
It is initialized it can be seen from the above, receiving signal from MCU to sensor, 374ms when sharing relatively rapidly is imaged
Machine is capable of fast starting and starts to record a video.
Camera control unit provided in an embodiment of the present invention, when MCU receive detecting module transmission detectable signal and
For DSP module in off-position, MCU sends enable signal to energy supply control module, so that power supply is powered to DSP module, to control
Video camera processed starts to record, and when DSP module is in off-position but MCU does not receive the detectable signal of detecting module transmission,
Power supply is not powered to DSP module, and video camera, so as to reduce the power consumption of video camera, extends the electricity of video camera without recording
Pond uses the time；When power supply is not powered to DSP module, video camera can save the memory space of video camera without recording；Nothing
The video of DSP module or image data are sent to Cloud Server by line communication module, so as to remotely be checked by Cloud Server
The case where picture of video and shooting that video camera is recorded, checking monitoring region；Wireless communication module is by sending cloud clothes to MCU
The instruction information of device of being engaged in controls power supply powering, it can be achieved that long-range control to video camera to DSP module；MCU receives signal
Afterwards, DSP module quick start, video camera can quickly start to record a video, and the used time is shorter.
One embodiment of the invention additionally provides a kind of video camera, as shown in figure 8, including memory module, imaging sensor mould
The camera control unit that block and embodiment one provide, memory module are used to store the video and figure of camera control unit transmission
As data, image sensor module is for being converted to electric signal for the optical signal of acquisition and being sent to camera control unit.
In the present embodiment, the output end of image sensor module is connected with the input terminal of DSP module.Power supply can pass through
DSP module is powered to image sensor module.When DSP module is in power-up state, imaging sensor turns the optical signal of acquisition
It is changed to electric signal and is sent to DSP module, and so that DSP module is received the electric signal of imaging sensor transmission and handled to obtain
Video or image data.Referring to Fig. 3, the VIU of a universal input/output end and DSP module of imaging sensor
(versatile interface unit, Versatile Interface Unit) is connected, receive electric power that power supply is provided by DSP module and to
DSP module sends electric signal.Another universal input/output end of imaging sensor is also connected with the I2C bus of DSP module,
Receive the operating mode of DSP module configuration and to DSP module feedback working mode.
In the present embodiment, memory module can be memory, the input terminal and the output end phase of DSP module of memory module
Even.Power supply can be powered by DSP module to memory module.DSP module can send video or image data to memory module into
Row storage.Referring to Fig. 3, the universal input/output end and DSP mould of DDR (Dual Data Rate, Double Data Rate) random access memory
The ddr interface of block is connected, and receives video or image data and send video or image data to DSP module that DSP module is sent.
Since preceding sections are described in detail camera control unit, no longer repeated herein.
In embodiment provided herein, it should be understood that term " first ", " second " etc. are only used for description mesh
, it is not understood to indicate or imply relative importance or implicitly indicates the quantity of indicated technical characteristic.
The above is merely for convenience of it will be understood by those skilled in the art that technical solution of the present invention, not to limit
The present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (11)
1. a kind of camera control unit, which is characterized in that including detecting module, control module, signal processing module, power supply and
Energy supply control module, wherein
The power supply is powered to the detecting module, the control module and the signal processing module；
The input terminal of the detecting module receives detectable signal, and output end is connected with the input terminal of the control module；
The output end of the control module is connected with the control terminal of the energy supply control module；
The input terminal of the energy supply control module is connected with the output end of the power supply, output end and the signal processing module
Power input be connected；
The control module is configured as when the detectable signal for receiving the detecting module transmission, and the signal processing module
In off-position, enable signal is sent to the energy supply control module, the power supply is made to power to the signal processing module.
2. camera control unit according to claim 1, which is characterized in that the control module is additionally configured to work as
The detectable signal that the detecting module is sent is not received by predetermined time, and the signal processing module is in power-up state
When, disable signal is sent to the energy supply control module, the power supply is made to stop powering to the signal processing module.
3. camera control unit according to claim 1, which is characterized in that the detecting module includes that passive infrared is visited
Device PIR is surveyed, the PIR is configured as when detecting has predeterminated target in monitoring area, sends target to the control module
Detectable signal makes the control module in the signal processing module in off-position, sends to the energy supply control module
Enable signal, so that the power supply be made to power to the signal processing module.
4. camera control unit according to claim 1, which is characterized in that the detecting module includes sound pick-up, institute
It states sound pick-up to be configured as when collecting sound, sends sound-detection signal to the control module, make the control module
It is greater than preset threshold and the signal processing module in off-position in the sound-detection signal, controls mould to the power supply
Block sends enable signal, so that the power supply be made to power to the signal processing module.
5. camera control unit according to claim 1, which is characterized in that the camera control unit further includes nothing
Line communication module, the power supply is to the wireless communication module power supply；The output end of the signal processing module and described wireless
The input terminal of communication module is connected, and the signal processing module is configured as sending out by the wireless communication module to Cloud Server
Send video or image data.
6. camera control unit according to claim 1, which is characterized in that the camera control unit further includes nothing
Line communication module, the power supply is to the wireless communication module power supply；The output end of the wireless communication module and the control
The input terminal of module is connected, and the control module is additionally configured to when the enabled instruction for receiving the wireless communication module transmission
Information, and the signal processing module sends enable signal to the energy supply control module in off-position, to make described
Power supply is powered to the signal processing module.
7. camera control unit according to claim 6, which is characterized in that the control module is additionally configured to work as and connect
Receive that the wireless communication module sends forbids indicating information, and the signal processing module is in power-up state, to described
Energy supply control module sends disable signal, so that the power supply be made to stop powering to the signal processing module.
8. camera control unit according to claim 1, which is characterized in that the camera control unit further includes nothing
Line communication module, the power supply is to the wireless communication module power supply；The output end of the wireless communication module and the signal
The input terminal of processing module is connected, and the output end of the signal processing module is connected with the input terminal of the control module, described
Signal processing module is additionally configured to pass through the control when receiving when forbidding indicating information of the wireless communication module transmission
Molding block sends disable signal to the energy supply control module, and the power supply is made to stop powering to the signal processing module.
9. camera control unit according to claim 1, which is characterized in that the camera control unit further includes
One power management module, input terminal are connected with the output end of the power supply, the input terminal of output end and the control module
It is connected, first power management module is configured as being converted to the voltage value that the power supply provides into the volume of the control module
Constant voltage value.
10. camera control unit according to claim 1, which is characterized in that the camera control unit further includes
Second source management module, input terminal are connected with the output end of the power supply, output end and the signal processing module
The input terminal of multiple submodule is connected, and the voltage value that the second source management module is configured as providing power supply is converted to institute
State the load voltage value of the multiple submodule of signal processing module.
11. a kind of video camera, which is characterized in that including memory module, image sensor module and according to claim 1-10 its
Any one of described in camera control unit, the memory module is used to store the video that the camera control unit is sent
And image data, described image sensor module is for being converted to electric signal for the optical signal of acquisition and being sent to the video camera
Control device.
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| CN201710339576.4A CN108881705A (en) | 2017-05-15 | 2017-05-15 | A kind of camera control unit and video camera |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710339576.4A CN108881705A (en) | 2017-05-15 | 2017-05-15 | A kind of camera control unit and video camera |
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| CN201710339576.4A Pending CN108881705A (en) | 2017-05-15 | 2017-05-15 | A kind of camera control unit and video camera |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111757055A (en) * | 2020-06-11 | 2020-10-09 | 杭州觅睿科技有限公司 | Snapshot method and system based on low-power consumption monitoring device |
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