Split type high definition network cameraTechnical Field
The invention relates to the field of networking monitoring, in particular to a split type high-definition network camera which realizes standby for a super-long time, is quickly started and meets high-definition audio and video transmission.
Background
The traditional network camera adopts an integrated design, the power consumption is large and is generally more than 5W, if the network camera is continuously on line, a direct current power supply is needed to supply power on line, and in many occasions, such as a household environment, the decoration effect is influenced by the wiring of electric wires and network cables during installation, and the configuration is often abandoned; and the standby time of the battery power supply is short, the battery needs to be frequently replaced, the practicability is poor, and the battery is often abandoned at last. In many application occasions, video recording is not needed, the actual service time of the network camera is not long, but remote networking starting is supported.
The traditional wireless network camera is usually designed in an integrated mode, the starting speed is low when the energy-saving sleep is restarted, about 15 seconds are generally needed, and the customer experience is poor if a sleep starting mode is adopted.
Some cameras adopt a front-end alarm starting mode, although long-time standby can be supported, the requirement of remote networking starting of a client cannot be supported.
Disclosure of Invention
The invention aims to provide a split high-definition network camera which realizes the standby for a super-long time and the quick start and meets the requirement of high-definition audio and video transmission on the premise of supporting the remote network start of a client.
The purpose of the invention is realized by the following technical scheme: a split type high-definition network camera comprises a front end part and a rear end part, wherein the front end part consists of a first wireless module, a first Wi-fi module, a non-compression network camera module and a battery module; the rear end part consists of a second wireless module, a second Wi-fi module, a host, a video compression module, a wired power module and a network module, wherein the wired power module supplies power to the second wireless module, the host, the second Wi-fi module, the video compression module and the network module.
The host computer obtains instructions through the network module, the instructions comprise starting and standby, and the host computer controls the second wireless module to broadcast the instructions in real time; the front end part is normally in a standby state, and the rest parts except the first wireless module are powered off in the standby state; the first wireless module is powered by the battery module, adopts a normal dormancy mode and a timing awakening mode, and starts to acquire a command broadcasted by the second wireless module at a fixed time;
after the first wireless module of the front end part receives the starting signal, the battery module is excited to supply power to the first Wi-fi module and the non-compression network camera module, and the first Wi-fi module and the non-compression network camera module are started. After each module of the front end part is started, the non-compression network camera module collects audio and video information and generates a code stream, the code stream is sent to the rear end through the first Wi-fi module, the second Wi-fi module obtains the audio and video code stream, and the audio and video compression code stream compressed by the video compression module is uploaded to a network through the network module.
After the first wireless module of the front end part receives the standby signal, the first wireless module cuts off the power supply of the battery module to the first Wi-fi module and the non-compression network camera module.
Furthermore, the first wireless module and the second wireless module are both bluetooth modules, or both Zigbee modules, or other wireless communication modules that adopt normal dormancy and timed wake-up functions.
The invention has the beneficial effects that:
1. the split type design is formed by splitting a front end and a rear end; the front end adopts a battery for power supply, and double wireless devices are connected with the rear end, so that the wireless and wireless 'full wireless' configuration of a front-end camera is really realized; the customer experience effect is improved.
2. The front end realizes the standby with ultra-low power consumption and ultra-long time on the premise of supporting the starting of the back end networking. The front end and the rear end are connected by double wireless communication, the Bluetooth is responsible for waking up the front end to obtain a rear end starting signal at a fixed time (<1 second) in a low power consumption dormant state when the front end is in standby, the front end is powered by a battery, and the front end supports ultra-low power consumption (<5 microwatts) and ultra-long standby (5 # batteries are in standby for one year) under the premise of keeping high-frequency communication (<1 second) with the rear end when the front end is in standby; therefore, the contradiction between the ultra-long standby and the power supply on the premise that the front end supports the quick start of the rear end is solved, the battery replacement frequency is greatly reduced, and the customer experience effect is improved.
3. The invention supports high-definition audio and video, adopts double wireless design, and under the condition of considering networking ultra-low power consumption standby, the front-end audio and video code stream is returned by Wi-fi under the starting working state, thereby supporting the bandwidth requirement of transmission of the high-definition audio and video code stream.
4. The split type audio and video compression is arranged at the rear, and the starting is faster. The split type video camera realizes audio and video acquisition and audio and video compression separation, and the audio and video compression is post-positioned, so that the starting speed is greatly increased compared with an integrated video camera. Because the back end adopts on-line power supply, the starting speed is not influenced and is determined by the front end, the design is that the front end part adopts a non-compression network camera to take charge of audio and video acquisition, and the back end is in charge of audio and video compression to realize compression backward movement; the front-end non-compression camera is less in code loading than the integrated network camera when receiving a rear-end starting signal, the starting is faster, the starting time is only 2-3 seconds, and is about 5 times faster than the starting time (about 15 seconds) of the traditional integrated camera, so that the client networking waiting time is shortened, and the client experience effect is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
A split type high-definition network camera comprises a front end part and a rear end part, wherein the front end part consists of a first wireless module, a first Wi-fi module, a non-compression network camera module and a battery module; the rear end part consists of a second wireless module, a second Wi-fi module, a host, a video compression module, a wired power module and a network module, wherein the wired power module supplies power to the second wireless module, the second Wi-fi module, the video compression module and the network module.
The dual wireless mode supports the realization of ultra-low power consumption standby and large working bandwidth of the back-end networking. The first wireless module and the second wireless module communicate through a Bluetooth or Zigbee protocol and are used for receiving or sending standby/starting instructions. The first wireless module of the front end part adopts a sleep timing starting mode, and a timing (interval <1 second) interception mode acquires a command sent by the second wireless module of the rear end part, so that ultra-low power consumption (<5 microwatts) and ultra-long standby (one No. 5 battery is standby for one year) of the front end are realized; therefore, the battery replacement frequency is greatly reduced, and the customer experience effect is improved. Meanwhile, the first Wi-fi module and the second Wi-fi module are connected through Wi-fi and used for transmitting high-definition audio and video code streams, and the bandwidth requirement of non-compressed high-definition audio and video is met.
And (5) realizing compression backward shift. The front end part adopts a non-compression network camera to take charge of audio and video acquisition, and the rear end compresses the audio and video to realize compression backward movement; because the back end adopts online power supply, the starting time is not needed, and the loading code of the front-end non-compression camera is less, the starting is faster when a back-end starting signal is received, the starting time is only 2-3 seconds, and the starting time is faster than that of an integrated compression camera (about 15 seconds), thereby shortening the waiting time of a client and improving the experience effect.
The working process of the split high-definition network camera is as follows: the host computer obtains instructions through the network module, the instructions comprise starting and standby, and the host computer controls the second wireless module to broadcast the instructions in real time; the front end part is normally in a standby state, and the rest parts except the first wireless module are powered off in the standby state; the first wireless module is powered by the battery module, adopts a normal dormancy and timed awakening mode and acquires a command broadcasted by the second wireless module at a fixed time;
after the first wireless module of the front end part receives the starting signal, the battery module is controlled to supply power to the first Wi-fi module and the non-compression network camera module through the interface control power switch, and the first Wi-fi module and the non-compression network camera module are started. After each module of the front end part is started, the non-compression network camera module collects audio and video information to generate a non-compression audio and video code stream and sends the non-compression audio and video code stream to the rear end through the first Wi-fi module, the second Wi-fi module obtains the audio and video code stream, and the compressed audio and video code stream generated after being compressed by the video compression module is uploaded to a network through the network module.
After the first wireless module of the front end part receives the standby signal, the interface control power switch cuts off the power supply of the battery module to the first Wi-fi module and the non-compression network camera module.
The present invention will be further described with reference to the following examples.
Example 1
In the embodiment, the front-end camera adopts a non-compression mode scheme and a scheme of 99141 for configuring a Wi-fi high-definition digital non-compression camera, the power is supplied by a battery, and a power supply control switch is connected in series on a power supply line; the first wireless module adopts a CC2541 Bluetooth module of Texas instruments, 4 batteries of 18650 five batteries are connected in parallel, and power is supplied to Bluetooth through a linear regulator LDO; according to the received start and standby instructions of the broadcast packet, the front-end Bluetooth module outputs an I/O switch instruction to control a series contact pressure switch on the power supply line, and controls the power supply state of the front-end Wi-fi high-definition digital non-compression camera.
The rear end comprises a Bluetooth module, a wireless Wi-fi router and a Haisi 3518e-v200 module (comprising a network interface and a direct-current power supply, wherein after the Xiamai-Haisi 3518e-v200 module receives a network networking instruction, the Bluetooth module broadcasts a starting signal through a serial port instruction, the wireless Wi-fi router receives a returned audio and video code stream after the front end is started to enter a working state, the received audio and video code stream is compressed and encoded through the Xiamai-Haisi 3518e-v200 module, and then the audio and video code stream is uploaded to a network.
In this embodiment, the second wireless Wi-fi module generally adopts a wireless router of a local area network, and when receiving an audio/video code stream returned by the first wireless Wi-fi module, i.e., the wireless network card, the audio/video code stream is transmitted to the hermitian-haisi 3518e-v200 module through the local area network, and the audio/video compressed code stream is generated after compression and is uploaded to the network.
The present embodiment supports the back-end to the front-end delivery of the audio stream.
Example 2
In this embodiment, the front end portion is the same as that of embodiment 1, and the rear end portion is composed of an android network set top box, a wireless local area network Wi-fi router, a USB serial port converter and a second bluetooth module. The back end replaces a male Michelia Haisi 3518e-v200 module through an android network set top box to reduce configuration cost.
In this embodiment, the network set-top box may also be replaced by other hardware supporting compression and saving of the audio and video code stream.
Example 3
The front end of the embodiment 1 can be used for supporting an electronic visual doorbell of remote audio and video networking, an electronic visual safe supporting remote audio and video networking and other audio and video applications inconvenient for wired power supply after being expanded.