CN104796598B - Space wireless camera and its method of work - Google Patents

Space wireless camera and its method of work Download PDF

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Publication number
CN104796598B
CN104796598B CN201410844776.1A CN201410844776A CN104796598B CN 104796598 B CN104796598 B CN 104796598B CN 201410844776 A CN201410844776 A CN 201410844776A CN 104796598 B CN104796598 B CN 104796598B
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module
camera
control process
charging
power supply
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CN104796598A (en
Inventor
侯建文
王兆龙
袁驰
贺亮
韩飞
胡坤
刘宗明
邓成晨
刘胜
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Shanghai Xinyue Instrument Factory
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Shanghai Xinyue Instrument Factory
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Abstract

The present invention is a kind of space wireless camera and its method of work, and space provided by the invention is included with wireless camera：Automatic focusing camera module, embed the Wi Fi modules of protocol stack, power supply management of charging and discharging module, control process module；Described power supply management of charging and discharging module connection external cell, for camera, other modules provide electric energy；Described automatic focusing camera module, is connected by I2C interface and DCMI interfaces with control process module；The embedded protocol stack Wi Fi modules are connected by SPI interface with control process module；Described control process module includes an ARM core processor, a SRAM.The present invention meets the needs of microminiature platform is to power consumption, volume, weight etc., while is also applied for other occasions to be wirelessly transferred that are essential restricted to power consumption, volume, weight etc..

Description

Space wireless camera and its method of work
Technical field
The present invention relates to spacing wireless to monitor imaging technique, and in particular to a kind of space microminiature wireless camera and its work Make method.
Background technology
Taken pictures in each main task section of satellite, it is necessary to carry out monitoring to satellite state itself and surrounding environment, facilitate ground Each main task section working condition of satellite is intuitively understood.Compared with other traditional loads, micro-satellite space surveillance The power consumption of camera, volume, quality etc. suffer from more stringent requirement.Micro-satellite refers to quality defending within 50 kilograms Star.
Small volume, the micro-satellite market boom in light weight, low in energy consumption at present, but because space environment is complicated, ground production Product generally can not be directly used in space, it is therefore desirable to which technical staff provides a kind of monitoring product of space microminiature, meets micro- Type satellite spatial application demand.
The content of the invention
The present invention solves the problems, such as it is requirement that existing camera can not meet micro-satellite；To solve described problem, this hair It is bright that a kind of space wireless camera and its method of work are provided.Space wireless camera provided by the invention can be to space environment And spacecraft body carries out monitoring shooting, and the picture photographed can be given accordingly by wireless network transmissions by Wi-Fi Main frame, while comprising power supply management of charging and discharging, charge and discharge control is carried out to the lithium polymer battery of system itself, supports power-off certainly Main work.
Space provided by the invention is included with wireless camera：Automatic focusing camera module, embed the Wi-Fi moulds of protocol stack Block, power supply management of charging and discharging module, control process module；
Described power supply management of charging and discharging module connection external cell, for camera, other modules provide electric energy；
Described automatic focusing camera module, is connected by I2C interface and DCMI interfaces with control process module；
The embedded protocol stack Wi-Fi module is connected by SPI interface with control process module；
Described control process module includes 32 ARM core processors, a 2MByte SRAM.
Further, SRAM is the external data storage space of ARM core processors, and program's memory space is inside single-chip microcomputer FLASH；ARM core processors are used for the initialization of automatic focusing camera module, Wi-Fi module, power supply management of charging and discharging module Configuration；ARM core processors obtain Wi-Fi module data message, and request automatic focusing camera module is clapped surrounding environment According to, automatic focusing camera module photograph image information is obtained, and by image transmitting to Wi-Fi module, and passed through by Wi-Fi module Radio channel is transferred to external wireless network；ARM core processors monitor the state of power supply management of charging and discharging module simultaneously, to not Corresponding operating is carried out with state.
Further, Wi-Fi module is connected by 802.11b/g/n wireless protocols with external network.
Further, the power supply management of charging and discharging module and external cell form SPU, power supply charge and discharge fulgurite Manage module and management of charging and discharging is independently carried out to the lighium polymer in external cell according to environment temperature, battery status, while to control Processing module feedback status information processed, interpretation and operation are carried out for upper layer software (applications).
Further, the automatic focusing camera module embeds auto-focusing algorithm and voice coil motor, the auto-focusing phase Machine module is analyzed scenery in visual field, motor precession, realizes auto-focusing in visual field.
Further, the automatic focusing camera module, the Wi-Fi module of embedded protocol stack, power supply management of charging and discharging module, Control process module is integrated in BGA printed boards；The BGA printed boards have a rectangular indentation, and the camera lens of camera is fixed on described lack Mouthful, and electrically connected by connector with BGA printed boards.
Further, in addition to：Shell；The shell includes fore shell, middle shell, rear shell；The fore shell and middle shell surround chip Space；The BGA printed boards are placed in chip space, and shooting hole is provided with fore shell；The middle shell and rear shell surround battery space, outside Portion's battery is placed in the battery space；Fairlead is provided with the middle shell, connects external cell and power supply management of charging and discharging module Wire pass through the fairlead.
Further, there is the first connecting bolt in the rear shell；First connecting bolt is connected with spaceborne second Bolt is connected by pin removal；Two side walls of the middle shell phase pair are separately installed with the first separating switch and second and separated Close, middle shell is compressed by first separating switch and the second separating switch with primary；Separation finger is received by Wi-Fi module After order, the priming system igniting in control process module control pin removal, the first connecting bolt disconnects with the second connecting bolt, First separating switch and the second separating switch separate wireless camera by the elastic force compressed.
Further, heating plate is posted on the fore shell, the wireless camera has been internally integrated temperature measurement module；The thermometric mould Camera temperature is notified primary by block by Wi-Fi module；Primary produces according to camera temperature and default safe temperature range to be added Heat instruction stops heating instructions；The heating instructions or stopping heating instructions being fed back at control by Wi-Fi module Module is managed, control process module control heating plate performs respective operations.
The present invention also provides the method for work of described space wireless camera, comprising：
Step 1: control process module is carried out just to Wi-Fi module, power supply management of charging and discharging module, automatic focusing module Beginningization configures；
Step 2: receiving primary by Wi-Fi module sends order, and when being ordered for shooting, control process module request Automatic focusing module is taken pictures, and passes through DCMI interface pictorial informations；
Step 3: pictorial information is sent to Wi-Fi module by control process module by SPI interface, then by Wi-Fi module The main frame being sent to by wireless protocols in network.
With wireless camera compared with prior art, its advantage and beneficial effect are in the space of the present invention：Small volume, weight Gently, it is low in energy consumption, using Wi-Fi module and power supply charge and discharge module, omit traditional connection cables；Use automatic focusing camera simultaneously Module, auto-focusing imaging can be carried out to scene in visual field；Thermal control design has been carried out to camera simultaneously, sky can be applied to Between environment.The space that the embodiment of the present invention is provided has been tested successfully in space environment with wireless camera, realizes 1.5w/ 100g low-power consumption；And the weight of camera is less than 100g.
Brief description of the drawings
Fig. 1 is microminiature wireless camera block diagram in space of the present invention.
Embodiment
Hereinafter, in conjunction with the accompanying drawings and embodiments, the present invention is further elaborated.
As shown in figure 1, space wireless camera provided by the invention, including：Automatic focusing camera module 44, embed agreement The Wi-Fi module 22 of stack, power supply management of charging and discharging module 55, control process module 11.Power supply management of charging and discharging module 55 is is Other modules of uniting provide electric energy, and are responsible for the management of charging and discharging to external cell 66；Automatic focusing camera module 44 is connect by I2C Mouth and DCMI interfaces are connected with control process module；Embedded protocol stack Wi-Fi module passes through SPI interface and control process module phase Even, it is connected by 802.11b/g/n wireless protocols with external wireless network 33.The space also includes data with wireless camera Interface, power supply interface, battery interface, for being connected with external equipment.
The control process module includes an ARM core processor, a SRAM.In the present embodiment, the ARM kernels Processor uses 32 ARM core processors, and the SRAM uses 2MByte SRAM.External datas of the SRAM as single-chip microcomputer Memory space, program's memory space are FLASH inside single-chip microcomputer.ARM core processors are used for automatic focusing camera module, Wi- The initial configuration of Fi modules, power supply management of charging and discharging module；Wi-Fi module data message is obtained, asks automatic focusing camera Module is taken pictures to surrounding environment, obtains automatic focusing camera module photograph image information, and give image transmitting to Wi-Fi moulds Block, and external wireless network is transferred to by radio channel by Wi-Fi module.The shape of power supply management of charging and discharging module is monitored simultaneously State, corresponding operating is carried out to different conditions.Wi-Fi module is internally integrated protocol stack, can compatible 802.11b/g/n agreements, both Server mode is may be used as, can be used for client mode again.I.e. space can be connected to existing network with small camera In, can also be as the focus of wireless network, for supporting being connected to for external data.Power supply management of charging and discharging module and outside lithium Polymer battery together form SPU, power supply management of charging and discharging module according to pre-set programs according to environment temperature, Battery status independently carries out management of charging and discharging to lighium polymer, while can be to control process module feedback status information, for upper strata Software carries out interpretation and operation.Automatic focusing camera module, auto-focusing algorithm and voice coil motor are embedded, can be to scenery in visual field Analyzed, motor precession, realize auto-focusing in visual field.
By using ARM core processors and above-mentioned other configurations, wireless phase provided by the present invention is greatly reduced The power consumption of machine, in one embodiment, the power consumption of the wireless camera is 1.5W/100g, far below the work(of existing wireless camera Consumption.
Power supply management of charging and discharging module uses switching power supply, avoids the larger colelctor electrode damage of linear stabilized power supply Consumption, only during switch state, less pipe consumption occurs.And the power-efficient of switching power supply is high, this product The soc conversion efficiency of selection small in volume, meets micro-satellite mission requirements up to 90% ~ 95%.
In order to reduce the volume of wireless camera provided by the present invention, in an embodiment of the present invention, what is provided is wireless Camera also has following architectural feature：
The automatic focusing camera module, embed the Wi-Fi module of protocol stack, power supply management of charging and discharging module, at control Reason module is integrated in BGA printed boards；The BGA printed boards have a rectangular indentation, and the camera lens of camera is fixed on the breach, and leads to Connector is crossed to electrically connect with BGA printed boards.
The BGA printed boards are installed in shell, and the shell includes fore shell, middle shell, rear shell；The fore shell and middle shell enclose Into chip space；The BGA printed boards are placed in chip space, and shooting hole is provided with fore shell；The middle shell and rear shell surround battery Space, external cell are placed in the battery space；Fairlead is provided with the middle shell, connects external cell and power supply charge and discharge fulgurite The wire of reason module passes through the fairlead.Middle shell separates BGA printed boards with external cell, adds the safety of wireless camera Property.
There is the first connecting bolt in the rear shell；First connecting bolt is with the second connecting bolt on satellite by pulling out Sell device connection；Two side walls of the middle shell phase pair are separately installed with the first separating switch and the second separating switch, and middle shell passes through First separating switch and the second separating switch are connected with primary；After receiving separation command by Wi-Fi module, at control The priming system igniting in module control pin removal is managed, the first connecting bolt disconnects with the second connecting bolt, and first separates Close and the second separating switch disconnects.So as to realize the separation of wireless camera and satellite.
In order to realize severe space environment, heating plate is posted on the fore shell, the wireless camera has been internally integrated survey Warm module；Camera temperature is notified primary by the temperature measurement module by Wi-Fi module；Primary is according to camera temperature and default peace Total temperature scope produces heating instructions or stops heating instructions；The heating instructions or stopping heating instructions passing through Wi-Fi Module feedback to control process module, control process module control heating plate performs respective operations.
The method of work of space wireless camera provided by the present invention includes：
Control process module carries out initialization and matched somebody with somebody to Wi-Fi module, power supply management of charging and discharging module, automatic focusing module Postpone, receiving primary by Wi-Fi module sends order, and when being ordered for shooting, request automatic focusing module is taken pictures, and Pass through DCMI interface pictorial informations.And pictorial information is sent to by Wi-Fi module by SPI interface, then by Wi-Fi module The main frame being sent to by wireless protocols in network.
If by electric on outside, control process module reads power supply management of charging and discharging module status, judges whether to be connected to battery, If battery is connected into, battery status is normal and battery needs to charge, it is charged by external power source, charging algorithm is constant pressure and flow Algorithm.Monitor battery and ambient conditions in real time in charging process, when being unsatisfactory for charge condition, forbid filling to battery Electricity.
If being powered by system battery, system judges battery electric quantity, if not enough power supply, power supply management of charging and discharging module is to control Processing module processed sends state interrupt, and control process module sends information to external network by Wi-Fi module.Simultaneity factor Battery powered electric current is judged, if exceeding protection value, system automatic shutdown.
In above process, if house dog generation is abnormal inside single-chip microcomputer in control process module, system reset, and Configuration is reinitialized after reset, Wi-Fi module, power supply management of charging and discharging module, automatic focusing module are initialized again Configuration.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.

Claims (4)

  1. A kind of 1. space wireless camera, it is characterised in that including：Automatic focusing camera module, embed the Wi-Fi moulds of protocol stack Block, power supply management of charging and discharging module, control process module；
    Described power supply management of charging and discharging module connection external cell, for camera, other modules provide electric energy；
    Described automatic focusing camera module, is connected by I2C interface and DCMI interfaces with control process module；
    The embedded protocol stack Wi-Fi module is connected by SPI interface with control process module；
    Described control process module includes an ARM core processor, a SRAM；
    SRAM is the external data storage space of ARM core processors, and program's memory space is FLASH inside single-chip microcomputer；In ARM Core processor is used for automatic focusing camera module, Wi-Fi module, the initial configuration of power supply management of charging and discharging module；ARM kernels Processor obtains Wi-Fi module data message, and request automatic focusing camera module is taken pictures to surrounding environment, and it is automatic right to obtain Burnt camera model shooting image information, and by image transmitting to Wi-Fi module, and transmitted by Wi-Fi module by radio channel Give external wireless network；ARM core processors monitor the state of power supply management of charging and discharging module simultaneously, and phase is carried out to different conditions It should operate；
    Wi-Fi module is connected by 802.11b/g/n wireless protocols with external network；
    The power supply management of charging and discharging module and external cell form SPU, and power supply management of charging and discharging module is according to ring Border temperature, battery status independently carry out management of charging and discharging to the lighium polymer in external cell, while anti-to control process module Status information is presented, interpretation and operation are carried out for upper layer software (applications)；
    The automatic focusing camera module embeds auto-focusing algorithm and voice coil motor, and the automatic focusing camera module is to visual field Interior scenery is analyzed, and motor precession, realizes auto-focusing in visual field；
    The automatic focusing camera module, embed the Wi-Fi module of protocol stack, power supply management of charging and discharging module, control process mould Block is integrated in BGA printed boards；The BGA printed boards have a rectangular indentation, and the camera lens of camera is fixed on the breach, and passes through connection Device is connect to electrically connect with BGA printed boards；
    The space also includes shell with wireless camera；The shell includes fore shell, middle shell, rear shell；The fore shell and middle shell enclose Into chip space；The BGA printed boards are placed in chip space, and shooting hole is provided with fore shell；The middle shell and rear shell surround battery Space, external cell are placed in the battery space；Fairlead is provided with the middle shell, connects external cell and power supply charge and discharge fulgurite The wire of reason module passes through the fairlead.
  2. 2. according to the space wireless camera described in claim 1, it is characterised in that there is the first connecting bolt in the rear shell； First connecting bolt is connected with spaceborne second connecting bolt by pin removal；Two side walls of the middle shell phase pair Be separately installed with the first separating switch and the second separating switch, middle shell by first separating switch and the second separating switch with Primary compresses；After separation command being received by Wi-Fi module, the priming system igniting in control process module control pin removal, First connecting bolt disconnects with the second connecting bolt, and the first separating switch and the second separating switch will by the elastic force compressed Wireless camera separates.
  3. 3. according to the space wireless camera described in claim 1, it is characterised in that heating plate is posted on the fore shell, it is described Wireless camera has been internally integrated temperature measurement module；Camera temperature is notified primary by the temperature measurement module by Wi-Fi module；Primary Heating instructions are produced according to camera temperature and default safe temperature range or stop heating instructions；The heating instructions stop Only heating instructions feed back to control process module by Wi-Fi module, and control process module control heating plate performs respective operations.
  4. 4. the method for work for the space wireless camera that any one is provided in claims 1 to 3, it is characterised in that include：
    Step 1: control process module initializes to Wi-Fi module, power supply management of charging and discharging module, automatic focusing module Configuration；
    Step 2: receiving primary by Wi-Fi module sends order, when being ordered for shooting, control process module request is automatic Focusing module is taken pictures, and passes through DCMI interface pictorial informations；
    Step 3: pictorial information is sent to Wi-Fi module by control process module by SPI interface, then passed through by Wi-Fi module Wireless protocols are sent to the primary in network.
CN201410844776.1A 2014-12-31 2014-12-31 Space wireless camera and its method of work Active CN104796598B (en)

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CN109975830B (en) * 2019-02-21 2021-09-03 上海卫星工程研究所 In-orbit thermal deformation suppression system for GEO satellite optical remote sensing instrument
CN113660403B (en) * 2021-08-23 2023-06-02 长春理工大学 Satellite-borne ultra-miniature monitoring camera

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