CN103297756B - A kind of centralized frequency image monitoring system - Google Patents
A kind of centralized frequency image monitoring system Download PDFInfo
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Abstract
The invention discloses a kind of centralized frequency image monitoring system, including: image unit, including some wireless cameras, in each wireless camera, it is provided with the first low-consumption wireless module；One gateway unit, including radio network gateway, is provided with the second wireless module in this radio network gateway；One router unit, including network router；Wherein, radio network gateway connects each wireless camera and network router respectively, surrounding is monitored by image unit, first low-consumption wireless module transfer monitoring signal is to radio network gateway, second wireless module sends image request signal, controlling wireless camera and gather image, and image information shared by network router, user side is obtained and monitoring image information by network router；Controlled by signals different between first and second wireless module, realize signal transmitting with lower-wattage, thus reach transmitting and the low-power consumption purpose of centralized frequency image monitoring system, be greatly improved the use time of battery in wireless camera.
Description
Technical field
The present invention relates to picture control field, particularly relate to a kind of multiparty control, the centralized frequency image monitoring system of low-consumption wireless transmission.
Background technology
During the use of the monitor and control facility such as family or warehouse, typically can arrange that multiple monitoring point is monitored, in traditional image information transmitting procedure, image transmitting in 2.4GHz frequency range is typically all based on IEEE802.11 standard and by the packing of whole image is transmitted, and easily occurs the situations such as packet loss in transmitting procedure；And Zigbee protocol is low-power consumption territory based on IEEE802.15.4 standard fidonetFido, the technology specified according to this agreement is the wireless communication technology of a kind of short distance, low-power consumption.Be characterized in closely, low complex degree, self-organizing, low-power consumption, low data rate, low cost.It is mainly suitable for, for automatically controlling and remote control field, various equipment to be embedded.
And, in the prior art, some frequency image monitoring systems are mostly by multi-multipoint monitor mode, the most multiple terminal units control to show multiple monitoring devices, thus reach the purpose of monitoring, but, owing to the corresponding multiple monitoring devices in multiple terminals obviously compare using and the loss of other energy consumptions of waste equipment；Additionally, picture pick-up device based on WIFI in prior art, owing to power dissipation ratio is bigger, in use compare expense electricity, and maybe must use and cannot be in the case of quick-replaceable aneroid battery using, owing to the power consumption of prior art is bigger, it is impossible to use battery to power for a long time, thus cause monitoring device to monitor in real time, certain puzzlement can be caused to monitoring.
Additionally, in the prior art, owing to monitoring device is constantly in monitoring and data transmission state, thus the power consumption of monitoring device can be increased, and in actual applications, monitoring device is not long-time to use or use always, but at special time or having image just needs carry out image transmitting and monitor in real time.
Therefore, it is necessary to propose a kind of multiparty control that can implement one-to-many, and low-consumption wireless transmitting, and the centralized frequency image monitoring system that monitoring device can be monitored during implementing monitoring can be reached by passive type dynamic monitoring mode in monitoring implementation process.
Summary of the invention
In order to overcome the defect of prior art, it is desirable to provide a kind of one-to-many, and the centralized frequency image monitoring system that power consumption is extremely low.
To achieve these goals, the invention provides a kind of centralized frequency image monitoring system, including: image unit, including some wireless cameras, in each wireless camera, it is provided with the first low-consumption wireless module；Gateway unit, including a radio network gateway, is provided with the second wireless module in described radio network gateway；Routing unit, including a network router；Wherein, described gateway unit connects described image unit and described routing unit respectively；Surrounding is monitored by described image unit in real time, gathers monitoring signal；Described first low-consumption wireless module is by described monitoring signal transmission extremely described gateway unit；Described monitoring signal is judged by described gateway unit, and when needing surrounding now is carried out image acquisition, described second wireless module sends image request signal to described image unit；When described image unit receives described image request signal, surrounding carrying out image acquisition, and the image collected is sent to described routing unit shares, obtain for user side, the image obtained by user side realizes the monitoring to surrounding；
Only when described image unit is when carrying out image acquisition to surrounding, described first low-consumption wireless module is in running order；Remaining time is in sleep state；
Only when described gateway unit is when receiving image information, and described second wireless module is in high sensitivity duty；Remaining time is in low sensitivity duty.
It is preferred that described first low-consumption wireless module includes the first state controller, the first RF receiving/transmission device, the first power amplifier and the first low noise amplifier；Send described monitoring signal by described first RF receiving/transmission device or receive described image request signal, and controlled described first power amplifier and the enable signal of described first low noise amplifier respectively by described first state controller, thus control described first low-consumption wireless module and enter duty.
It is preferred that described duty includes that emission state, high sensitivity receive state and muting sensitivity receives state；Described sleep state is for forbidding reiving/transmitting state, wherein:
When described first state controller, described first RF receiving/transmission device, described first power amplifier and described first low noise amplifier are all without enable signal for forbidding reiving/transmitting state, now, described first state controller, described first RF receiving/transmission device, described first power amplifier and described first low noise amplifier do not work, and described first low-consumption wireless module neither sends monitoring signal and the most do not receives image request signal；Being emission state during and if only if described first power amplifier has enable signal, now, described first power amplifier work, described first RF receiving/transmission device sends described monitoring signal；Being that high sensitivity receives state when described first low noise amplifier has enable signal, now, described first low noise amplifier work, described first RF receiving/transmission device quickly receives described image request signal；When described first low-consumption wireless module has enable signal, and described enable nonpassage of signal is that muting sensitivity receives state when crossing described first power amplifier and described first low noise amplifier, now, described first power amplifier and described first low noise amplifier do not work, and only receive described image request signal by described first RF receiving/transmission device.
It is preferred that be provided with triggering device in described image unit, surrounding is monitored by described triggering device in real time, and is monitored signal by described image unit collection.
It is preferred that described triggering device includes that a Passive Infrared Sensor, described Passive Infrared Sensor are triggered by a moving target, after described Passive Infrared Sensor is triggered, described first low-consumption wireless module sends monitoring signal.
It is preferred that described second wireless module includes the second state controller, the second RF receiving/transmission device, the second power amplifier and the second low noise amplifier；Receive described monitoring signal respectively by described second RF receiving/transmission device and send described image request signal, and control described second power amplifier and the enable signal of described second low noise amplifier by described second state controller, thus control described second wireless module and enter high sensitivity duty or low sensitivity duty.
It is preferred that described high sensitivity duty is the state that receives at a high speed, described low sensitivity duty is low speed emission state；And described second wireless module also includes forbidding reiving/transmitting state, wherein:
When described second state controller, described second RF receiving/transmission device, described second power amplifier and described second low noise amplifier are all without enable signal for forbidding reiving/transmitting state, now, described second state controller, described second RF receiving/transmission device, described second power amplifier and described second low noise amplifier do not work, described second wireless module neither sends image request signal, does not the most receive image information and monitoring signal；Being high speed reception state during and if only if described second low noise amplifier has enable signal, now, described second low noise amplifier work, described second RF receiving/transmission device receives described monitoring signal and described image information；Being low speed emission state when described power amplifier has enable signal, now, described second power amplifier work, described second RF receiving/transmission device sends described image request signal.
It is preferred that described high speed receives state includes image-receptive state and non-image reception state；Wherein, it is image-receptive state when described second RF receiving/transmission device is arranged to mate described image unit transmission image information by the second state controller, now, described second low noise amplifier work, described second RF receiving/transmission device quickly receives described image information；It is non-image reception state when described second RF receiving/transmission device is arranged to mate described image unit transmission non-image information by the second state controller, now, described second low noise amplifier work, described second RF receiving/transmission device quickly receives described non-image information, and described non-image information includes described monitoring signal.
It is preferred that described image unit and described gateway unit carry out transmitting by IEEE802.15.4 communication standard；Decrease packet loss phenomenon, be effectively increased the reliability of data transmission.
Transmit it is preferred that described image information is divided into multiple packet by described image unit to described gateway unit；After described gateway unit sends image request signal, wait and receive described packet；If described gateway unit receives all of packet, then described image unit given by transmission receipt, and described receipt comprises the reception state of all packets；If there is data-bag lost situation, described gateway unit resends image request signal.
It is preferred that be provided with CPU timer in described first state controller.
The invention allows for a kind of monitoring method of centralized frequency image monitoring system, utilize above-mentioned centralized frequency image monitoring system to be monitored, comprise the steps:
(1) monitor surrounding by described image unit, and send monitoring signal；
(2) received described monitoring signal by described gateway unit, and send an image request signal to described image unit, after described image unit receives described image request signal, gather image information；
(3) described image unit is based on IEEE802.15.4 communication standard, the image information collected is sent and transmitting is to described gateway unit；
(4) described gateway unit receives described image information, and it is shared to realize image information by described routing unit；
(5) user side obtains image information by the Internet or LAN, by described image information, monitors surrounding in real time.
The invention allows for a kind of monitoring method of centralized frequency image monitoring system, comprise the steps:
(1) it is automatic sleep mode by described image unit；
(2) described gateway unit is when non-image reception state, upon a user request, can enter low speed emission state；
(3) described image unit exits sleep state by CPU timer timing, and actively receives the image request signal from described gateway unit under low sensitive duty；
(4) if after described image unit receives image request signal, described image unit and described gateway unit enter high-speed operation mode, described image unit gather image information；
(5) described image unit is based on IEEE802.15.4 standard, the image information collected is sent and transmitting is to described gateway unit；
(6) described gateway unit receives described image information, and it is shared to realize image information by described routing unit；
(7) user side obtains image information by the Internet or LAN, by described image information, monitors surrounding in real time；
(8) described image unit does not receives the image request signal of described gateway unit under highly sensitive duty within the configurable time, and the most described image unit enters sleep state.
Compared with prior art, beneficial effects of the present invention is as follows:
1, the present invention is by using low-power consumption module, and the interior low noise amplifier arranged of low-power consumption module and power amplifier are under the state controller i.e. control of microprocessor, inputted by different signals or output, carry out image transmitting and the reception of lower-wattage, greatly reduce the loss of power, drastically increase the monitoring efficiency of image unit, significantly increase the use time that battery is provided into image unit.
2, the present invention is connected with router and photographic head by a gateway device, by transmission and the monitoring of the different image information of multiple photographic head, and shared by router, user is made to obtain image information by the Internet, a gateway correspondence can be made to control multiple photographic head, and at most up to 255 control points, the utilization rate of equipment and installations being greatly enhanced.
3, the present invention is based on IEEE802.15.4 agreement, use off-gauge high speed radio transmission equipment, in 2.4GHz frequency range, image is sent to gateway at photographic head, and be transmitted by application IEEE802.15.4 agreement, divide the image into multiple bag transmitting, not only increase the efficiency of image transmitting, and greatly reduce the packet drop of image transmitting, decrease the transmission time, make image transmitting relatively reliable.
4, it is provided with Passive Infrared Sensor on the photographic head of the present invention, photographic head can be triggered by the passive monitoring of Passive Infrared Sensor and gateway works, it is in tick-over or idle sleep state when not being triggered, greatly reduces the consumption of power supply, also improve the real-time of dynamic monitoring.
Accompanying drawing explanation
Fig. 1 is the present invention centralized frequency image monitoring system structural representation；
Fig. 2 is low-power consumption modular structure schematic diagram of the present invention；
Fig. 3 is the present invention the first low-consumption wireless module and the interconnective structural representation of the second wireless module；
Fig. 4 is transmitting schematic flow sheet of the present invention；
Fig. 5 is wireless camera view of the present invention.
Symbol list:
100-image unit, 200-gateway unit, 300-routing unit, 400-the first low-consumption wireless module, 401-the first state controller, 402-the first RF receiving/transmission device, 403-the first low noise amplifier, 404-the first power amplifier, 500-the second wireless module, 501-the second state controller, 502-the second RF receiving/transmission device, 503-the second low noise amplifier, 504-the second power amplifier.
Detailed description of the invention:
See the accompanying drawing illustrating the embodiment of the present invention, the present invention hereafter be will be described in greater detail.But, the present invention can in different forms, specification etc. realizes, and should not be construed as the embodiment by herein proposing and limited.On the contrary, proposing these embodiments is to reach fully and complete disclosure, and makes more relevant those skilled in the art understand the scope of the present invention completely.In these accompanying drawings, for clearly visible, relative size may be zoomed in or out.
As shown in Figure 1 to Figure 2, the centralized frequency image monitoring system of one that the present invention implements, this system includes image unit 100, gateway unit 200 and routing unit 300, this image unit 100 includes some wireless cameras, and photographic head is at most up to 255, is provided with the first low-consumption wireless module 400 in each wireless camera；Gateway unit 200 includes radio network gateway, is provided with the second wireless module 500 in this radio network gateway；Routing unit 300 includes a network router, and wherein, this gateway unit 200 connects some wireless cameras and network router respectively, is monitored surrounding in real time by image unit 100, gathers monitoring signal；By the first low-consumption wireless module 400, monitoring signal is transmitted to gateway unit 200, monitoring signal is judged by this gateway unit 200, when needing surrounding now is carried out image acquisition, second wireless module 500 sends image request signal to image unit 100, after this image unit 100 receives image request signal, surrounding is carried out image acquisition, and the image information collected is shared by routing unit 300, obtaining for user side, the image information obtained by the user side such as PC or handheld device realizes the monitoring to surrounding.
And, only when image unit 100 is when carrying out image acquisition to surrounding, and the first low-consumption wireless module 400 is in running order；Remaining time is in sleep state；Only when gateway unit 200 is when sending image request signal, and the second wireless module 500 is in high sensitivity duty；Remaining time is in low sensitivity duty.
As in figure 2 it is shown, the first low-consumption wireless module 400 includes the first state controller the 401, first RF receiving/transmission device the 402, first power amplifier 404 and the first low noise amplifier 403；Send monitoring signal by the first RF receiving/transmission device 402 or receive image request signal, and controlled the first power amplifier 404 and enable signal of the first low noise amplifier 403 respectively by the first state controller 401, thus control the first low-consumption wireless module 400 and enter duty, otherwise enter sleep state；And this first state controller 401 is provided with CPU timer, the convenient image unit 100 to this centralized frequency image monitoring system arranges sleep pattern, to reach the purpose of low-power consumption.
Wherein, duty includes that emission state, high sensitivity receive state and muting sensitivity receives state；Described sleep state is for forbidding reiving/transmitting state；When first state controller the 401, first RF receiving/transmission device the 402, first power amplifier 404 and the first low noise amplifier 403 are all without enable signal for forbidding reiving/transmitting state, now, first state controller the 401, first RF receiving/transmission device the 402, first power amplifier 404 and the first low noise amplifier 403 do not work, and the first RF receiving/transmission device 402 neither sends monitoring signal and the most do not receives image request signal；Being emission state during and if only if the first power amplifier 404 has enable signal, now, the first power amplifier 404 works, and the first RF receiving/transmission device 402 sends monitoring signal；Being that high sensitivity receives state when the first low noise amplifier 403 has enable signal, now, the first low noise amplifier 403 works, and the first RF receiving/transmission device 402 quickly receives image request signal；When the first low-consumption wireless module 400 has enable signal, and enable nonpassage of signal is that muting sensitivity receives state when crossing the first power amplifier 404 and the first low noise amplifier 403, now, first power amplifier 404 and the first low noise amplifier 403 do not work, and only receive image request signal by the first RF receiving/transmission device 402.
The enable signal input state of the first low-consumption wireless module 400 is as shown in the table:
| BYPASS-EN | LNA-EN | PA-EN | State | Typical case's supply current |
| 0 | 0 | 0 | Forbid transmitting-receiving | 0.5μA |
| 0 | 0 | 1 | Launch | 70mA |
| 0 | 1 | X | High sensitivity receives | 8mA |
| 1 | X | X | Muting sensitivity receives | 50μA |
Wherein, 0 indicates without enabling signal input, 1 indicates enable signal input, X represent courier can signal input with or without, as can be seen from the table, in the first low-consumption wireless module 400 sends monitoring signal and image acquisition process, controlled by different states, thus the size of electric current in control circuit, reach lower-wattage loss.
It addition, the second wireless module 500 includes the second state controller the 501, second RF receiving/transmission device the 502, second power amplifier 504 and the second low noise amplifier 503；Received monitoring signal by the second RF receiving/transmission device 502 respectively and send image request signal, and control the second power amplifier 504 and enable signal of the second low noise amplifier 503 by the second state controller 500, thus control the second wireless module 500 and enter high sensitivity duty or low sensitivity duty.
Wherein, high sensitivity duty is the state that receives at a high speed, and low sensitivity duty is low speed emission state；Second wireless module 500 also includes forbidding reiving/transmitting state；When second state controller the 501, second RF receiving/transmission device the 502, second power amplifier 504 and the second low noise amplifier 503 are all without enable signal for forbidding reiving/transmitting state, now, second state controller the 501, second RF receiving/transmission device the 502, second power amplifier 504 and the second low noise amplifier 503 do not work, second wireless module 500 neither sends image request signal, does not the most receive image information and monitoring signal；Being high speed reception state during and if only if described second low noise amplifier 503 has enable signal, now, described second low noise amplifier 503 works, and described second RF receiving/transmission device 502 quickly receives and monitors signal and image information；When the second power amplifier 504 has enable signal, and now, the second power amplifier 504 works, the second RF receiving/transmission device 502 low speed sends image request signal.
And, reception state at a high speed includes image-receptive state and non-image reception state, it is image-receptive state when the second RF receiving/transmission device 502 is arranged to mate when image unit 100 sends image information by the second state controller 501, now, second low noise amplifier 503 works, and the second RF receiving/transmission device 502 quickly receives image information；Other status signals that non-image information i.e. monitors signal or the first state controller 401 sends are sent when the second RF receiving/transmission device 502 is arranged to mate image unit 100 by the second state controller 501, now, second low noise amplifier 503 works, and the second RF receiving/transmission device 502 quickly receives this non-image information.
The enable signal input state of the second wireless module 500 is as shown in the table:
| BYPASS-EN | LNA-EN | PA-EN | State | Typical case's supply current |
| 0 | 0 | 0 | Forbid transmitting-receiving | 0.5μA |
| 0 | X | 1 | Low speed is launched | 70mA |
| 0 | 1 | 0 | Receive at a high speed | 8mA |
Wherein, 0 indicates without enabling signal input, 1 indicates enable signal input, X represent enable signal input with or without, as can be seen from the table, when the second wireless module 500 sends image request signal and receives image information, controlled by different states, thus the size of electric current in control circuit, reach lower-wattage loss；When gateway unit 200 is in low speed emission state, by the Synchronization Control of CPU, wireless camera is in muting sensitivity and receives state, now the BYPASS-EN of the first low-consumption wireless module 400 is 1, the sensitivity required for low speed signal due to wireless module is relatively low, this low speed data bag remains to correctly be received by photographic head, thus reaches the purpose of the low-power consumption of wireless camera.
And in actual application, owing to wireless camera is placed in indefinite region, in order to ensure its duty, basic use battery is as power supply supply, therefore, it is possible to reach the permanent power supply supply of this wireless camera so that it is reach the purpose of low-power consumption；And in actual applications, radio network gateway can directly pass through mains-supplied, therefore, typically can consider its low-power consumption, radio network gateway can be made to be at receiving and transmission state at a high speed by mains supply, forbid reiving/transmitting state without being in.
It addition, be provided with triggering device in image unit 100, surrounding is monitored by this triggering device in real time, and is gathered monitoring signal by image unit 100；This triggering device includes a Passive Infrared Sensor, and this Passive Infrared Sensor is triggered by a moving target, and after Passive Infrared Sensor is triggered, the first low-consumption wireless module 400 sends monitoring signal.
And, the triggering device arranged in wireless camera is possible not only to as Passive Infrared Sensor, it can also be the triggering device of passive audio sensor, and the centralized frequency image monitoring system of the present invention can also arrange alarm system, user can be informed according to the picture control of the wireless camera of diverse location, make user monitor the image information of wireless camera of particular location in real time, in order to user accurately manages and processes, thus be greatly improved monitoring efficiency and the speed of the problem of process；And the network router used in this practicality example is not limited thereto, the present embodiment is only an optimum route device, it is also possible to according to the variation of the quantity of photographic head, each device is carried out suitable adjustment, in order to reach the purpose of monitoring.
As it is shown on figure 3, this image unit 100 and gateway unit 200 carry out transmitting by IEEE802.15.4 communication standard；Image information is divided into multiple packet and transmits to gateway unit 200 by image unit 100；After gateway unit 200 sends image request signal, wait and receive packet；If gateway unit 200 receives all of packet, then described image unit 100 given by transmission receipt, and receipt comprises the reception state of all packets；If there is data-bag lost situation, gateway unit 200 resends image request signal；Wherein, image receipt is a units group, and each represents reception state, if in actual applications 0 for confiscating, 1 for receiving, such as 1, and 2,3,4,5,6,7 bags are transmitted, and gateway unit 200 has only received Isosorbide-5-Nitrae, and 5,6,7, then receipt is 1001111；By the method for this transmitting than the method efficiency often receiving a bag just one receipt of transmission is high, the transmission time is short.
Embodiment 1
Connection by above-mentioned each device, each device is connected power supply or battery, and it is connected on PC that user uses or the communication apparatus such as mobile phone by LAN or the Internet, this centralized frequency image monitoring system arranges a radio network gateway and 3 wireless cameras interconnected therewith and a network router, it is provided with Passive Infrared Sensor in being provided with low-power consumption module, and this wireless camera in this radio network gateway and wireless camera.
When implementing monitoring, Passive Infrared Sensor is used for monitoring moving target, without moving target, then no signal transmission, low-power consumption module is in sleep state, when there being moving target, this Passive Infrared Sensor is triggered, the first low-consumption wireless module 400 in wireless camera sends a monitoring signal to radio network gateway, the second wireless module 500 in radio network gateway sends an image request signal and selects high speed reception state to receive image information, and the wireless camera controlling to monitor moving target carries out image acquisition, and carry out transmitting by the first low-consumption wireless module 400 based on IEEE802.15.4 standard, so that gateway unit 200 receives image information；If the image information of reception, and Passive Infrared Sensor is not triggered, then image unit 100 reenters sleep state.
It is monitored by this centralized frequency image monitoring system, the monitoring method of the centralized frequency image monitoring system of this triggering mode, specifically includes:
(1) monitor surrounding by image unit 100, and send monitoring signal；
(2) received monitoring signal by gateway unit 200, and send an image request signal to image unit 100, after image unit 100 receives image request signal, gather image information；
(3) image unit 100 is based on IEEE802.15.4 communication standard, the image information collected is sent and transmitting is to gateway unit 200；
(4) gateway unit 200 receives image information, and it is shared to realize image information by routing unit 300；
(5) user side obtains image information by the Internet or LAN, by this image information, monitors surrounding in real time.
Embodiment 2
Connection by above-mentioned each device, each device is connected power supply or battery, and it is connected on PC that user uses or the communication apparatus such as mobile phone by LAN or the Internet, this centralized frequency image monitoring system arranges a radio network gateway and 3 wireless cameras interconnected therewith and a network router, low-power consumption module it is provided with in this radio network gateway and wireless camera, wherein, state controller is CPU, it is provided with CPU timer in this state controller, by starting CPU timer, the cycle of the image acquisition of wireless camera is provided with the T1 second, wherein the length of one's sleep is T11, recovery time is T12, i.e. T1=T11+T12；As shown in Figure 4, within the T11 time, this wireless camera is for forbidding reiving/transmitting state, arrive when the T11 time, then the first low-consumption wireless module 400 is in muting sensitivity and receives state, if not receiving the image request signal sent by gateway unit 200 within the T12 time period, then T12 time up, this wireless camera goes successively to Sleep stages；If receiving the image request signal sent by gateway unit 200, then gathered image information by wireless camera, and carry out low speed transmitting based on IEEE802.15.4 standard, if wireless camera receives by the image request signal of gateway unit 200 for a long time within the T12 time, then this wireless camera gathers image information, and transmitted at high speed signal carries out image transmitting, and this gateway unit 200 is to receive at a high speed image information；If image transmitting is complete, this wireless camera does not receive the image request signal of gateway unit 200 within a certain period of time, then this wireless camera enters sleep state；The cycle is monitored hence into the next one.
And the concrete steps of the monitoring method of the centralized frequency image monitoring system of this timed sleep control mode include:
(1) image unit 100 is set to automatic sleep mode；
(2) gateway unit 200 is when non-image reception state, upon a user request, enters low speed emission state；
(3) image unit 100 exits sleep state by CPU timer timing, and actively receives the image request signal from gateway unit 200 under local-speed mode of operation；
(4) if image unit 100 receives image request signal, image unit 100 and gateway unit 200 enter high-speed operation mode, i.e. received monitoring signal by gateway unit 200, and be sent to image unit 100 1 image request signal, thus gathered image information by image unit 100；
(5) image information that image unit 100 gathers is based on IEEE802.15.4 standard, the image information collected is sent and transmitting is to gateway unit 200；
(6) gateway unit 200 receives image information, and it is shared to realize image information by routing unit 300；
(7) user side obtains image information by the Internet or LAN, by this image information, monitors surrounding in real time；
(8) image unit 100 does not receives the image request signal of gateway unit 200 in high speed mode within the configurable time, then this image unit 100 enters sleep state.
In this embodiment, wireless camera can be according to the different ambient As lengths of one's sleep and the time scale of low sensitive receiver, i.e. wireless camera can quit work when entering low power consumpting state, it is also possible to the image request signal being ready to receive gateway unit 200 with the state of low sensitive receiver enters duty；And under this duty, electric current according to the different operating state in embodiment 1, the battery electric quantity budget assuming power amplifier and low noise amplifier part is 1000mAH, when not using this technology, in order to ensure that radio network gateway can start wireless camera at any time, this wireless camera stand-by time necessarily be in reception state；Now stand-by time is 1000/8=125 hour, namely more than 5 days, and by the pattern of above-mentioned picture control, if the ratio of T11 and T12 of the wireless camera configured by CPU timer is 9:1, then stand-by time is 1000/(50*0.1+0.5*0.9) * 1000=183486 hour；Even if T11 is zero, i.e. image unit 100 and gateway unit 200 is constantly in low sensitive receiver state, then stand-by time is 1000/50*1000=20000 hour, i.e. more than 2 years；The most standby power consumption is compared with the power consumption of image acquisition and is negligible, and therefore, is effectively increased the working time of wireless camera by this centralized frequency image monitoring system.
And apply this system to carry out picture collection, needed for sending a pictures, power consumption is about 70mA*0.3 second=21mAS, then so that 171428 pictures can be sent if the electricity 1000mAH of battery, if within one day, gathering 1000 pictures in actual applications, then the battery of wireless camera can use the time of about half a year.The use time of the battery being greatly improved, it is really achieved the effect of low energy consumption.
State controller and the radio-frequency device of the centralized frequency image monitoring system that the present invention provides can improve the integration degree of wireless camera by being integrated in state controller by radio-frequency device, and this power amplifier and low noise amplifier all can be reached power amplification and the device of low noise amplification by other, to reach the purpose of low-power consumption；And the centralized frequency image monitoring system that the present invention proposes can be by arranging alarm device on gateway unit, allow to quickly identify the position of the wireless camera of image acquisition, to enable user to pass through PC or handheld device judging rapidly and monitors the control point of described wireless camera, it is easy to quickly process, also substantially increases the intellectuality of this device；And transmitting between image unit and gateway unit is not limited only to the IEEE802.15.4 standard agreement that the present embodiment proposes and is transmitted in this system, it is also possible to by other host-host protocol so that it is the reliable quickly transmission of image can be completed.
And, the first RF receiving/transmission device in the first low-consumption wireless module that the present invention provides and the second RF receiving/transmission device in the second wireless module, it is possible not only to be provided separately within the first low-consumption wireless module or the second wireless module, it is also possible to integrally disposed with the first state controller and the second state controller respectively；And this first state controller and the second state controller are microprocessor, there is logic identification function；Arranged by the low-power consumption of wireless camera in this centralized frequency image monitoring system, be effectively increased this systematic difference time.
Obviously, those skilled in the art can carry out various change and deform without departing from the spirit and scope of the present invention the present invention.So, if these amendments of the present invention and deformation belong in the range of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these changes.
Claims (12)
1. a centralized frequency image monitoring system, including:
Image unit, including some wireless cameras, is provided with the first low merit in each wireless camera
Consumption wireless module；
Gateway unit, including a radio network gateway, is provided with the second wireless module in described radio network gateway；
Routing unit, including a network router；
Wherein, described gateway unit connects described image unit and described routing unit respectively；
Surrounding is monitored by described image unit in real time, gathers monitoring signal；
Described first low-consumption wireless module is by described monitoring signal transmission extremely described gateway unit；
Described monitoring signal is judged by described gateway unit, when needing to carry out surrounding now
During image acquisition, described second wireless module sends image request signal to described image unit；
When described image unit receives described image request signal, surrounding is carried out image acquisition,
And the image collected is sent to described routing unit shares, obtain for user side, pass through user side
The image obtained realizes the monitoring to surrounding；
Only when described image unit is when carrying out image acquisition to surrounding, described first low-consumption wireless
Module is in running order；Remaining time is in sleep state；
Only when described gateway unit is when receiving image information, and described second wireless module is in high sensitivity work
Make state；Remaining time is in low sensitivity duty；
Described first low-consumption wireless module include the first state controller, the first RF receiving/transmission device,
One power amplifier and the first low noise amplifier；Described prison is sent by described first RF receiving/transmission device
Survey signal and receive described image request signal, described first state controller controlling described first respectively
Power amplifier and the enable signal of described first low noise amplifier, thus control described first low-power consumption without
Wire module enters duty.
Centralized frequency image monitoring system the most according to claim 1, it is characterised in that described work
State includes that emission state, high sensitivity receive state and muting sensitivity receives state；Described sleep state
For forbidding reiving/transmitting state, wherein:
When described first state controller, described first RF receiving/transmission device, described first power amplifier
And described first low noise amplifier all without enabling signal time for forbidding reiving/transmitting state, now, described first
State controller, described first RF receiving/transmission device, described first power amplifier and described first low
Amplifier of making an uproar does not works, and described first low-consumption wireless module neither sends monitoring signal and the most do not receives figure
As request signal；It is emission state during and if only if described first power amplifier has enable signal, now,
Described first power amplifier work, described first RF receiving/transmission device sends described monitoring signal；Work as institute
State when the first low noise amplifier has enable signal is that high sensitivity receives state, now, described first low noise
Amplifier operation, described first RF receiving/transmission device quickly receives described image request signal；When described
One low-consumption wireless module has enable signal, and described enable nonpassage of signal crosses described first power amplification
It is that muting sensitivity receives state, now, described first power amplification when device and described first low noise amplifier
Device and described first low noise amplifier do not work, and only receive described by described first RF receiving/transmission device
Image request signal.
Centralized frequency image monitoring system the most according to claim 2, it is characterised in that described shooting
Being provided with triggering device in unit, surrounding is monitored by described triggering device in real time, and by described
Image unit collection monitoring signal.
Centralized frequency image monitoring system the most according to claim 3, it is characterised in that described triggering
Device includes that a Passive Infrared Sensor, described Passive Infrared Sensor are triggered by a moving target, works as institute
Stating after Passive Infrared Sensor is triggered, described first low-consumption wireless module sends monitoring signal.
Centralized frequency image monitoring system the most according to claim 1, it is characterised in that described second
Wireless module includes the second state controller, the second RF receiving/transmission device, the second power amplifier and
Two low noise amplifiers；Described monitoring signal and transmission is received respectively by described second RF receiving/transmission device
Described image request signal, and by described second state controller control described second power amplifier and
The enable signal of described second low noise amplifier, thus control described second wireless module and enter high sensitivity work
Make state or low sensitivity duty.
Centralized frequency image monitoring system the most according to claim 5, it is characterised in that described Gao Min
Degree duty is the state that receives at a high speed, and described low sensitivity duty is low speed emission state；And it is described
Second wireless module also includes forbidding reiving/transmitting state, wherein:
When described second state controller, described second RF receiving/transmission device, described second power amplifier
And described second low noise amplifier all without enabling signal time for forbidding reiving/transmitting state, now, described second
State controller, described second RF receiving/transmission device, described second power amplifier and described second low
Amplifier of making an uproar does not works, and described second wireless module neither sends image request signal, does not the most receive figure
As information and monitoring signal；And if only if, and described second low noise amplifier has when enabling signal for receiving at a high speed
State, now, described second low noise amplifier work, described second RF receiving/transmission device quickly receives institute
State monitoring signal and described image information；It is low when described second power amplifier has enable signal
Speed emission state, now, described second power amplifier work, described second RF receiving/transmission device low speed
Send described image request signal.
Centralized frequency image monitoring system the most according to claim 6, it is characterised in that described high speed
Reception state includes image-receptive state and non-image reception state；
Wherein, it is arranged to mate institute by described second state controller when described second RF receiving/transmission device
State image unit send image information time be image-receptive state, now, described second low noise amplifier work
Making, described second RF receiving/transmission device quickly receives described image information；When described second radio-frequency receiving-transmitting dress
Put by described second state controller be arranged to mate image unit send non-image information time be non-image
Reception state, now, described second low noise amplifier work, described second RF receiving/transmission device quickly connects
Receive described non-image information, and described non-image information includes described monitoring signal.
Centralized frequency image monitoring system the most according to claim 1, it is characterised in that described shooting
Unit and described gateway unit carry out transmitting by IEEE802.15.4 communication standard.
Centralized frequency image monitoring system the most according to claim 8, it is characterised in that described shooting
Described image information is divided into multiple packet and transmits to described gateway unit by unit；Described gateway unit
After sending image request signal, wait and receive described packet；If described gateway unit receives all
Packet, then transmission receipt give described image unit, described receipt comprises the reception shape of all packets
State；If there is data-bag lost situation, described gateway unit resends image request signal.
Centralized frequency image monitoring system the most according to claim 1, it is characterised in that described
One state controller is provided with CPU timer.
The monitoring method of 11. 1 kinds of centralized frequency image monitoring systems, utilizes collection as claimed in claim 1
Chinese style frequency image monitoring system is monitored, it is characterised in that comprise the steps:
(1) monitor surrounding by described image unit, and send monitoring signal；
(2) received described monitoring signal by described gateway unit, and send an image to described image unit
Request signal, after described image unit receives described image request signal, gathers image information；
(3) described image unit is based on IEEE802.15.4 communication standard, the image information that will collect
Send and transmitting is to described gateway unit；
(4) described gateway unit receives described image information, and realizes image letter by described routing unit
Breath is shared；
(5) user side obtains image information by the Internet or LAN, by described image information, right
Surrounding monitors in real time.
The monitoring method of 12. 1 kinds of centralized frequency image monitoring systems, utilizes collection as claimed in claim 1
Chinese style frequency image monitoring system is monitored, it is characterised in that comprise the steps:
(1) described image unit is set to automatic sleep mode；
(2) described gateway unit is when non-image reception state, upon a user request, can enter low speed
Emission state；
(3) described image unit exits sleep state by CPU timer timing, and sensitive connects low
The image request signal from described gateway unit is actively received under receipts state；
(4) if after described image unit receives image request signal, described image unit and described net
Close unit and enter highly sensitive duty, described image unit gather image information；
(5) described image unit collection is based on IEEE802.15.4 standard, the image information that will collect
Send and transmitting is to described gateway unit；
(6) described gateway unit receives described image information, and realizes image letter by described routing unit
Breath is shared；
(7) user side obtains image information by the Internet or LAN, by described image information, right
Surrounding monitors in real time；
(8) described image unit does not receives described under highly sensitive duty within the configurable time
The image request signal of gateway unit, the most described image unit enters sleep state.
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| CN113301297A (en) * | 2021-04-27 | 2021-08-24 | 北京工业大学 | Work information acquisition device for tunnel construction machine and tunnel boring machine |
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