The utility model content
The purpose of the utility model is to overcome the shortcoming of prior art, discloses the higher wireless video doorbell system of a kind of cost performance, and this system is made up of main frame and doorbell two parts, does carrier through the radio signal of 2.4G between main frame and doorbell and carries out message transmission.Both call sides can realize that double-directional speech conversation can carrying out again one-way video image transmits.Join on main frame and the PSTN network at ordinary times, use thereby main frame also can be used as a phone.
The utility model discloses a kind of novel radio video doorbell system; Comprise: main computer unit, display, host keyboard, main frame wireless module, main frame speech processing module and main frame session module that it comprises host microprocessors and is connected and receives said host microprocessors control respectively with said host microprocessors; The doorbell unit; It comprises doorbell microprocessor and the photographing module, doorbell keyboard, doorbell wireless module, doorbell speech processing module, doorbell session module and the door switch relay that are connected with said doorbell microprocessor respectively, and wherein said photographing module, doorbell keyboard, doorbell wireless module, doorbell speech processing module and door switch relay receive the control of said doorbell microprocessor.
Preferably, the novel radio video doorbell system of the utility model, said display are the LCD LCD, and said display is connected with said host microprocessors through the control of the display on said host microprocessors mouth.
Preferably, the novel radio video doorbell system of the utility model, said host keyboard is connected with said host microprocessors through the I/O interface on the said host microprocessors.
Preferably, the novel radio video doorbell system of the utility model, said main frame wireless module is connected with said host microprocessors through the SPI interface on the said host microprocessors.
Preferably, the novel radio video doorbell system of the utility model, said photographing module are camera, and said photographing module is connected with said doorbell microprocessor through the special-purpose control mouth of the camera on the said doorbell microprocessor.
Preferably, the novel radio video doorbell system of the utility model, said session module also is connected with the speech channel handover module.
Preferably, the novel radio video doorbell system of the utility model, said door switch relay is by its work of driver control.
Preferably, the novel radio video doorbell system of the utility model, said doorbell keyboard is connected with said doorbell microprocessor through the I/O interface on the doorbell microprocessor.
Preferably, the novel radio video doorbell system of the utility model, said doorbell wireless module is connected with said doorbell microprocessor through the SPI interface on the said doorbell microprocessor.
The beneficial effect of the utility model is: be carrier with the 2.4G radio between the main frame of the wireless video doorbell system of the utility model and the doorbell, carry out wireless connections; Can realize the double-directional speech conversation between main frame and doorbell; Main frame can transmit video signal by unidirectional reception doorbell; Doorbell can be gathered the voice and the image information of " ringer "; Main frame can realize that image shows; Main frame can also be realized telephony feature.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed description, can implement according to this with reference to the specification literal to make those skilled in the art.
As shown in Figure 1, the wireless video doorbell system of the utility model comprises main computer unit and doorbell unit.The main computer unit display, host keyboard, main frame wireless module, main frame speech processing module and the main frame session module that comprise host microprocessors and be connected and receive the control of said host microprocessors respectively with said host microprocessors wherein.Host microprocessors is the core of this system, and it is responsible for language data process and implements image demonstration and various control, and it has following function: control LCD LCD; The scanning host keyboard; Voice signal is carried out encoding and decoding to be handled; Picture signal is carried out decoding processing; The main control system wireless module carries out data and transmits; The main control system speech channel is to realize telephony feature.Outside the decapacitation of LCD LCD realizes that required information such as normal phone shows, can realize that also coloured image shows, mouthful directly join, system power supply " inversion " is handled the backlight of back as LCD with the special-purpose control of the liquid crystal of host microprocessors.Host keyboard adopts " ranks " matrix-style I/O mouth direct and host microprocessors to join, and the incoming line of keyboard is received on the mouth line with interrupt function, through interrupting handling " button " of keyboard.The main frame wireless module is made up of special chip and peripheral circuit, adopts the SPI interface with host microprocessors, can realize the two-way simultaneous transmitting-receiving, is operated in 2.4G, and power consumption is less.The main frame speech processing module can become data message with voice signal after A/D handles gives host microprocessors and redispatches away, also can generate the controlled voice signal of volume receiving speech data information after the D/A conversion.The main frame session module is controlled by host microprocessors, can realize telephony feature, and sending words and accepted call signal all is analog signal, through the PSTN Network Transmission.The speech channel handover module is used for realizing that handle, hands-free (containing MIC and SPEAKER) are in phone and video doorbell switching between the two.
As shown in Figure 1; The doorbell unit comprises doorbell microprocessor and the photographing module, doorbell keyboard, doorbell wireless module, doorbell speech processing module, doorbell session module and the door switch relay that are connected with said doorbell microprocessor respectively, and wherein said photographing module, doorbell keyboard, doorbell wireless module, doorbell speech processing module and door switch relay receive the control of said doorbell microprocessor.At length introduce the function of each module below.Introduce the function of each module of doorbell unit below in detail.
The doorbell microprocessor also is the core of this system, and it is responsible for speech processes and image data acquiring, and it has following function: the control camera, carry out the image information collection; Trigger doorbell; Voice signal is carried out encoding and decoding, processed compressed; Picture signal is carried out encoding process; Control doorbell wireless module carries out data and transmits.The special-purpose control mouth of the camera of camera and doorbell microprocessor directly joins, and gives host microprocessors collecting image information, gives main computer unit after the processing.The doorbell keyboard I/O mouth with interrupt function direct and the doorbell microprocessor joins, and when doorbell switch is triggered, just produces at the I/O of doorbell microprocessor mouth and interrupts, and makes it carry out this event handling in the very first time.The doorbell wireless module is made up of special chip and peripheral circuit, adopts the SPI interface to be connected with wireless microprocessor, can realize the two-way simultaneous transmitting-receiving, is operated in 2.4G, and power consumption is less.The doorbell speech processing module becomes voice signal into data message and gives the doorbell microprocessor after A/D handles, redispatch away behind the coding, also can generate volume controllable simulation voice signal receiving speech data information after the D/A conversion.The door switch relay is used for the opening and closing of control gate, controlled by the doorbell microprocessor, need add the work that the one-level driver comes the control gate switch relay.
The work of a kind of novel radio video doorbell system of the utility model is divided into two kinds of situation, introduces respectively below in conjunction with Fig. 2 and Fig. 3:
First kind of situation is when indoor set is in idle condition; Be that indoor set conversation part is in closed condition; Owner does not communicate through indoor set, and commutation circuit is the switching circuit of an alternative, and indoor set hands-free microphone and indoor set hand-free loudspeaker are one group; Handle is one group, and the acquiescence handle is connected for one group.Indoor set microprocessor and indoor set radio transmitting and receiving chip are ready, and waiting signal receives.Off-premises station microprocessor and off-premises station radio transmitting and receiving chip are ready, off-premises station microphone, off-premises station loud speaker, and off-premises station audio A/DA chip and off-premises station camera all are in closed condition.If someone will knock at the door, as long as press the off-premises station button, the microphone of off-premises station so; Loud speaker; Audio A/DA chip, camera gets started work, and the voice signal that the off-premises station microphone begins to gather the rapper is given audio A/DA chip and is changed; Because the sound of microphone collection is analog signal; Therefore give the off-premises station microprocessor after must converting digital signal to through audio A/DA chip, the software in the off-premises station microprocessor compresses voice signal, is compressed into 5.3kbps to the voice signal of script 64kbps.The off-premises station camera begins to gather rapper's vision signal; Itself has analog-digital conversion function because camera is inner; Therefore the YUV digital signal of camera output can directly be given the off-premises station microprocessor and compressed; Compression employing off-premises station microprocessor internal h.263 compression algorithm compresses, and the data after the compression are less than 100kbps.The off-premises station microprocessor is accomplished the back to voice signal and video signal compression and is synthesized two data and send through the off-premises station radio transmitting and receiving chip together; The radio transmitting and receiving chip here adopts the super low-power consumption 2.4GHz radio transmitting and receiving chip of NORDIC company; High workload speed is 2Mbps, and the bandwidth demand and the real-time that can satisfy us fully require (the indoor set radio transmitting and receiving chip adopts same model).After indoor set receives the signal that off-premises station sends, give your indoor set microprocessor signal and analyze, decompose; Decoding respectively then, voice signal abandons at this moment, and vision signal is directly given LCD display and is shown; Show rapper's video information; Indoor set microprocessor control indoor set audio A/DA chip is to the ring of indoor set loudspeaker plays then, and the same with the ring of ordinary telephone set, the prompting owner has the guest visiting.Owner can select to pick up handle or open hands-freely to come to engage in the dialogue with the rapper this moment, and can see rapper's video information in real time.Both are the same with the common effect of making a phone call, and difference is that then commutation circuit can be connected indoor set microphone and indoor set loud speaker for one group automatically if open hands-freely.And owner's voice signal through the indoor set microphone collection give indoor set audio A/DA chip and convert digital signal to and give indoor set microprocessor processed compressed; And send to off-premises station through the indoor set radio transmitting and receiving chip; Off-premises station is decoded through the off-premises station microprocessor after receiving the voice signal that indoor set sends; Convert analog signal to through off-premises station audio A/DA chip then and give loudspeaker plays, off-premises station just can be heard indoor owner's sound like this.Owner and the common the same on-hook or close hands-freely of making a phone call behind the sign off, off-premises station and indoor set all can automatically reset to armed state like this.
Second kind of situation is in running order when indoor set, and promptly owner dials through indoor set conversation part or receive calls this moment.Have people to press off-premises station button before the off-premises station this moment, and the signal transmission is said with first kind of situation, and off-premises station is gathered rapper's audio/video information process; Conversion, compression, synthetic back sends through the off-premises station radio transmitting and receiving chip; Because indoor set conversation part outlet busy condition; But indoor set doorbell part does not receive the influence of indoor set conversation part, and is still in running order, can receive the signal that off-premises station sends.After indoor set received signal, the indoor set microprocessor just decomposed a video information that receives, and decoded and was presented on the LCD LCD, waited for that then owner handles.This moment, owner conversed, and saw when the doorway has the people to knock at the door, and can switch to handle to doorway rapper's sound through switch key, the words that work of going forward side by side, and the far-end conversation keeps, but can't hear owner's sound.If will continue and the far-end conversation, press the indoor set switch key again and get final product.
Although the embodiment of the utility model is open as above; But it is not restricted to listed utilization in specification and the execution mode; It can be applied to the field of various suitable the utility model fully, for being familiar with those skilled in the art, can easily realize other modification; Therefore under the universal that does not deviate from claim and equivalency range and limited, the legend that the utility model is not limited to specific details and illustrates here and describe.