CN2888767Y - Telephone set with safety precaution function - Google Patents

Abstract

The utility model relates to a telephone with a safety pre-warning function, in particular to a telephone provided with a help seeking function with one key in the case of remote control doorbell and emergency, which comprises a telephone main station and a remote controller; the main station comprises a polarity inversion circuit, a power supply circuit, a start circuit, a dial circuit, a speaking circuit, a ringing circuit, and a liquid crystal display circuit, as well as a CPU circuit, an infrasonic detector circuit, a radio frequency receiving circuit; the remote controller comprises a radio frequency emission circuit. The telephone not only has all of the functions of the normal telephone, but also integrates the functions of remote control telephone doorbell, invasion detection, disconnection alarm, remote control/telephone urgent call, automatic dialing and pre-warning call monitor; Furthermore, the telephone is portable in volume, flexible in application and simple in operation. And the telephone can be widely used in household, department and all classes of units.

Description

Telephone set with safe early warning function

(1) technical field

The utility model relates to a kind of telephone set, and it comprises telephone set main frame and remote controller two parts, and is provided with especially at remote control doorbell and a key in emergency circumstances call function of seeking help, and is a kind of telephone set with safe early warning function specifically.

(2) background technology,

Landline telephone enters family already and is widely used, raising along with quality of life, also use and the function to it produces higher demand, but these common telephone sets have only functions such as conversation, simple abbreviated dialing, do not possess functions such as safe early warning, wireless remote control and break alarm.And existing alarm with dial feature, be as auxiliary device with telephone set, whole system generally comprises alarm main frame, telephone set and three independent parts of transducer, except transducer and main frame, telephone set and main frame each have one group of holding wire is connected, the each several part of system almost completely works alone.

Existing alarm with dial feature is difficult to: the first, and the transducer of employing has directivity to the requirement in space.The sensor type that is adopted has infrared sensor, door status sensor, glass millstone, microwave detector etc. several, and wherein modal is passive infrared sensor.Passive infrared sensor and microwave detector all are directive, promptly in the horizontal direction with on the vertical direction separately effective angle scope are arranged, and surpassing this range sensor will lose efficacy.Therefore in order to guarantee that passive infrared sensor covers the zone that will protect fully, when mounted the angle on height, horizontal direction and the vertical direction on distance ground all there is strict requirement.And the search coverage of transducer can not have any barrier, for example cabinet, desk, wall etc.The second, the very flexible of transducer requires independently-powered, the independent installation, also requires to link to each other with alarm host machine.The 3rd, transducer is subjected to the interference of various factors easily, the rate of false alarm height, and as the influence of interference such as ambient temperature, vibrations, impact, electromagnetism, light intensity variation, toy, so the design and installation of whole system just requires very high professional technique.The 4th, transducer is independent the installation, and particularly passive infrared sensor is exposed in people's the visual field fully, and disguised extreme difference is very easy to destroyed or interference, makes its inefficacy.

(patent No.: ZL02256030.0) technology just can solve above-mentioned defective as transducer to adopt existing infrasonic detection device.This transducer highly sensitive, antijamming capability is strong, good stability, adaptability is extensive, it adopts miniature low frequency microphone as transducer, the infrasound signal that produces when being used to gather the variation of airtight and volume of relative seal cavity (infrasound is a frequency at 20Hz with the unheard a kind of sound wave of people's ear down) can reach more than 300 square metres in the space exploration scope of good seal.Therefore this transducer has been compared following advantage with above-mentioned several transducers commonly used: the one, and non-directional, as long as transducer places detected space, there is not the restriction of detection angle; The 2nd, search coverage except requiring sealing relatively, there is not any requirement, this point is particularly suitable for the more places of detection blind area such as warehouse, reference room, family; The 3rd, extremely low to environmental requirement on every side.Because measured signal is infrasound, produce in the productive life can disturb infrasonic signal situation seldom.The infrasonic detection device can be inserted the inside of telephone set, makes telephone set have warning function, has solved the alarm complex structure like this, and the problem of difficulty is installed, and has improved disguise again, is not easy to be found destruction.

(3) summary of the invention

The purpose of this utility model is to overcome weak point of the prior art, a kind of telephone set with safe early warning function is provided, make it not only have the repertoire of ordinary telephone set: pulse/dual-tone dialing, hands-freely answer, function such as abbreviated dialing, simultaneously its also integrated Remote control telephone doorbell, intrusion detection, break alarm, remote control/phone urgent call, the function of dialing, early warning call monitoring, and lightweight and portable in volume automatically, use are flexible, simple to operate.

The utility model purpose adopts following technical scheme to realize, this has the telephone set of safe early warning function, comprise main frame and remote controller two parts, host machine part comprises polarity switching, power circuit, start-up circuit, dial-up circuit, speaking circuit, ringing circuit, liquid crystal display circuit, it is characterized in that also comprising central processing unit circuit, infrasonic detection device circuit, radio-frequency (RF) receiving circuit; Remote controller partly comprises the radio-frequency transmissions circuit.

Its unique distinction is: the outer line interface of main station is connected with input TIP, the RIN of polarity switching, and the output of polarity switching is connected with LNN with the output of the input of start-up circuit, dial-up circuit, the input T1 of ringing circuit and the output LN of R1, speaking circuit; The output HKS of start-up circuit is connected with central processing unit circuit start control pin 51 pin, and the output XMUTE of start-up circuit is connected with the control input end of speaking circuit; Three input DTMF, DP of dial-up circuit, HFO are connected with central processing unit circuit dialing output pin 49,50,57 pin respectively, the input DTMF end of speaking circuit is connected with central processing unit circuit dialing output pin 49 pin, and the output SPK of ringing circuit is connected with the input SPK of the hand-free circuit of speaking circuit; The liquid crystal display circuit input shows that with the central processing unit circuit control pin 1～44 pin is connected; The output VVOUT of infrasonic detection device circuit is connected with central processing unit circuit infrasound detection signal input pin 55 pin; Output PA～the PD of radio circuit receives pin 58～61 with the central processing unit circuit and is connected.

Central processing unit circuit of the present utility model comprises little process chip U701 (HA R1002); 55 pin of U701 meet the output VVOUT of infrasonic detection device circuit, judge whether to carry out early warning in order to signal and the processing that receives the input of infrasonic detection device circuit; 56 pin of U701 are the output of sound early warning signal, in order to the signal of 55 pin input is exported after treatment; 58～61 pin of U701 meet the output PA～PD of radio circuit, and each pin function is as shown in the table:

Table 1 central processing unit circuit pin function table

Pin number	Digital code	Function declaration	Pin number	Digital code	Function declaration
						1-40	SEG0 -SEG39	Liquid crystal display field drive signal output 0-39	55	SP1	The infrasound detection signal input part
41-44	COM0 -COM3	Liquid crystal display common drive signal output part 0-3	56	HL/RO	Sound early warning signal output
						45	XOUT2	32768Hz clock oscillator signal output	57	HFO	Hands-free enabling signal
46	XIN2	The concussion of 32768Hz clock	58-61	PA-PD	Wireless remote control receives

		Signal input part			Output PA-PD
						47	XOUT1	3.58MHz clock oscillator signal output	62	VDD	The positive supply input
48	XIN1	3.58MHz clock oscillator signal input	63	GND	Power ground
						49	DTMF	The dual-tone dialing signal output part	64	HOLD /LED	Retentive control signal output part/indicator light control output
50	DP	The pulse dialing signal output	65	P/T	P/T mode controller
						51	HKS	The start-up control signal input part	66	HF	The hand-free call mode is selected signal
52	RING DET	Ring detection signal input	67-71	ROW1 -ROW5	Keyboard matrix horizontal line signal input
						53	XMUTE	Quiet control signal output ends	72-77	COL1 -COL6	Keyboard matrix ordinate signal output part
54	RESET	Reseting controling signal	78-80	NA	Empty pin

Radio circuit of the present utility model is made of the radio-frequency transmissions circuit of remote controller part and the radio-frequency (RF) receiving circuit in the telephone set; Described radio-frequency transmissions circuit comprises line of codes, encoder U901 (PT2262), quadruple linkage keyboard and radiating circuit; Line of codes is connected with the address input end of encoder; The quadruple linkage keyboard is connected with the data input pin of encoder; The output of encoder is connected with the input of radiating circuit; The output of radiating circuit is connected with transmitting antenna; Described radio-frequency (RF) receiving circuit comprises line of codes, decoder U902 (PT2272), radiofrequency signal receiving circuit; Reception antenna is connected with the input of radiofrequency signal receiving circuit; The output of radiofrequency signal receiving circuit is connected with the data input pin of decoder; Line of codes is connected with the address input end of decoder; The output of decoder is as the output of radio circuit.

Infrasonic detection device circuit of the present utility model comprises chip IC 801 (GCZ-100), transducer MIC801, capacitor C 801～C810, potentiometer VR801; The end of transducer MIC801 is connected the input as chip, other end ground connection with 13 pin of IC801; 17 pin of IC801 are connected the other end ground connection of capacitor C 809 as output with 55 pin, the capacitor C 809 of central processing unit circuit; One end of capacitor C 801 links to each other minus earth with the stiff end of 2 pin of IC801 and swept resistance VR801; Another stiff end of swept resistance VR801 links to each other with 15 pin of IC801, and the sliding end of swept resistance VR801 links to each other with 20 pin of U801; Capacitor C 802 link to each other with 1 pin IC801, the other end links to each other with 3 pin of IC801; The anode of capacitor C 803 links to each other minus earth with 5 pin of IC801; The anode of capacitor C 804 links to each other with 4 pin of IC801, and negative electrode links to each other with 10 pin of IC801 and the end of C805; The other end of capacitor C 805 links to each other with 8 pin of IC801; One end of capacitor C 806 links to each other other end ground connection with 9 pin of IC801; The anode of capacitor C 807 links to each other other end ground connection with 11 pin of IC801; The anode of capacitor C 808 links to each other other end ground connection with 12 pin of IC801; The anode of capacitor C 809 links to each other with 17 pin of IC801, other end ground connection, and the anode of capacitor C 810 links to each other with 18 pin of IC801, and negative electrode links to each other with 19 pin of IC801; 6 pin of IC801 connect positive supply; 14, the 16 pin ground connection of IC801.

Start-up circuit of the present utility model comprises that triode Q101, resistance R 104～R106 and capacitor C 108 connect to form, in order to guarantee that dial-up circuit correctly is operated in on-hook or off hook state.

Dial-up circuit is made of pulse dialing circuit and dual-tone dialing circuit; Described pulse dialing circuit comprises that resistance R 127, R103, R101, R102 and triode Q107, Q102, Q103 and resistance connect to form; The end of the base stage connecting resistance R127 of triode Q107D and 50 pin of U701, the end of collector electrode connecting resistance R103, grounded emitter; The other end ground connection of resistance R 127; Base stage and the resistance R 102 of another termination triode Q103 of resistance R 103, the collector electrode connecting resistance R101 of triode Q103 and the base stage of triode Q102, the transmission utmost point of triode Q103 and the emitter parallel connection of triode Q102; The emitter of the other end of the other end of resistance R 102 and resistance R 101, triode Q102 also is connected to the input of polarity switching; Described dual-tone dialing circuit comprises that connecting resistance R122～R124, R126, R112, triode Q109, Q104 and capacitor C 101 connect to form.

Ringing circuit of the present utility model comprises that ring integrated circuit U201 (UTC1240A), protective circuit, transformer T201 and loud speaker SPK connect to form; 1,2 pin of described ring integrated circuit U201 connect TIP, RIN end respectively, in order to receive the signal of outside line incoming call; Described protective circuit comprises triode Q201, capacitor C 204, can not raise by voltage when the hand-free call in order to protection ringing circuit U201; Another input of described loud speaker is received on the SPK end, the pulse signal during in order to reception hand-free call or dialing.

Speaking circuit of the present utility model is made of handle speaking circuit and hand-free circuit; Described handle speaking circuit comprises that integrated circuit U501 (TEA1062), transmitter MIC501, receiver SPK501, anti-side-tone circuit, signal rectifier circuit connect to form; Transmitter MIC501 output links to each other with capacitor C 513, and the other end of capacitor C 513 is received resistance R 514, and resistance R 514 other ends are connected to 7 pin of U501; Receiver SPK501 input links to each other with capacitor C 509, and 4 pin of the other end of capacitor C 509 and U501 link to each other; Described anti-side-tone circuit comprises resistance R 502～R507, capacitor C 502, feeds back to PAC circuit in order to the level signal that prevents to send through resistance R 502 and capacitor C 503, disturbs and is talked about normally; Described hand-free circuit comprises four high guaily unit integrated amplifier U601 (LM324) and power amplifier integrate circuit U602 (TBA829M).

Power circuit of the present utility model is made of external power adapter power supply circuits and battery feed circuit; Described external power adapter power supply circuits comprise that inductance L 301, resistance R 305, capacitor C 303, C304, diode D305, D310, D314, triode Q303, voltage stabilizing didoe ZD301 and integrated circuit U302 connect to form; Battery feed circuit comprises that inductance L 301, resistance R 301, R303, capacitor C 302, C301 diode D301, D302, D311, D312, D315, triode Q301, Q302, integrated circuit U301, U302 connect to form.

Polarity switching of the present utility model comprises that inductance L 1, L2, capacitor C 1, C2 and diode D101～D104 connect to form, and is used for the uncertain voltage transitions of polarity is become the fixing voltage of polarity.

The utility model advantage is: the repertoire that not only has ordinary telephone set, simultaneously its also integrated Remote control telephone doorbell, intrusion detection, break alarm, remote control/phone urgent call, the function of dialing, early warning call monitoring, and lightweight and portable in volume automatically, use are flexible, simple to operate.

Comparing with the existing telephone machine has following good effect:

1. multiple functional, simple to operate, circuit is reliable;

2. can carry out the remote control doorbell and call out, the reliable and registration voluntarily of the coding of remote controller;

3. built-in infrasonic detection device, the warning function that is played is reliable, scope wide, disguised strong;

4. on phone and remote controller, all can carry out the key call function of seeking help;

The broken string or failure condition under, prompting capable of automatic alarm.

(4) description of drawings

Fig. 1 is a circuit block diagram of the present utility model;

Fig. 2 is the schematic diagram of startup and dial-up circuit;

Fig. 3 is the circuit theory diagrams of ringing circuit;

Fig. 4 is the circuit theory diagrams of power circuit;

Fig. 5 is the circuit theory diagrams of handle speaking circuit;

Fig. 6 is the circuit theory diagrams of hand-free circuit;

Fig. 7 is the schematic diagram of central processing unit circuit;

Fig. 8 is the circuit theory diagrams of infrasonic detection device circuit;

Fig. 9 (a) is the circuit theory diagrams that radio frequency is accepted circuit;

Fig. 9 (b) is the circuit theory diagrams that radio frequency is accepted circuit.

(5) embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.

The utility model is a kind of improved multi-feature telephone.It is made up of main station and remote controller two parts, mainly comprises polarity switching, power circuit, start-up circuit, dial-up circuit, speaking circuit, ringing circuit, liquid crystal display circuit, central processing unit circuit, infrasonic detection device circuit, radio circuit.The method of attachment of each circuit as shown in Figure 1.

The wireless doorbell system that the Remote control telephone doorbell is made up of remote controller and main frame.Adopt remote controller code identification mode to discern user's Digiplex, because available coding has 3 ¹²(531441) individual, utilize the selection of odd encoder can prevent from interference between the user from also effectively to have stoped the generation that is cracked and steals.Host machine part is also supported autonomous login function, after user remote controller is lost, can register the remote controller of recompile at home voluntarily, has removed the user from and main frame will have been returned the trouble that factory sets up new registration procedure remote controller, has prevented the misgivings that the coding of former remote controller leaks.

Automatic dialing is supported warning function, a key help function and is designed.One key help function can very convenient fast realization dial-up, is particularly suitable for old man and some other handicapped people and uses, and under be in an emergency at home (as kidnapping or faint), can be simple and convenient or hidden dial out phone design.

Remote control/phone urgent call monitor function is to occur because after early warning or emergency call function started automatic dialing, those who answer can understand situation about occurring in the family on the one hand, can reduce the mistake early warning on the other hand, and it is unnecessary alarmed that misoperation brings.In remote control/phone emergency call function, the telephone number that can dial has 4, and telephone number is not subjected to the restriction of type, can be local landline telephone, local handset, local Personal Handyphone System or toll telephone.And telephone number is imported voluntarily and is revised after can being bought by the user.

The effect of early warning call monitoring function is after the infrasonic detection device detects invasion or remote control/phone emergency call function startup, phone is transferred to 4 groups of phones successively, after the first receiving calls, send prompt tone in the receiver: siren sound (alert status), rapid " ticking " sound (remote control/phone urgent call state), can predict type of alarm according to different prompt tones, after prompt tone stops, those who answer can monitor 2 minutes and 59 seconds, can judge whether that like this situations such as burning issue or wrong report appear in burglar, household, and then take corresponding processing.

The function of deploying troops on garrison duty, withdraw a garrison of warning function mainly realizes by remote controller, also can be user-friendly to directly at the phone hands-operation.

1. the effect of start-up circuit is to guarantee that dial-up circuit correctly is operated in on-hook or off hook state, makes dial-up circuit be in resting state at hook state, makes the keyboard input invalid; Make dial-up circuit work at off hook state, allow the keyboard signal input, can dial this moment.This circuit comprises diode Q101, resistance R 104～R106 and capacitor C 108.The method of attachment of each parts as shown in Figure 2.

Carry at handle under the state of machine, the voltage that outside line is introduced is adjusted its polarity after resistance R 121 is passed through switch HS1 through polarity switching, after resistance R 104, R105 dividing potential drop, be added to the base stage of Q101 again and make its conducting, the current collection of Q101 is low level very, this signal is added to 51 pin of microprocessor U701, handle the back by analysis from its 50 pin output high level, this signal is added to the Q107 base stage and makes its conducting, current collection is low level very, making the Q103 base stage through resistance R 103 is the low level conducting, and making also conducting of Q102, telephone line is connected.

Under the state of handle on-hook, the voltage of introducing this moment is exported through after the adjustment of polarity switching, static working current is provided and is the circuit supply in the main frame to the VCC end through resistance R 107, D106 successively.

Phone is operated under the hands-free state, push Hands-free key " HF " this moment, 66 pin of U701 are by " HF " switch equivalence ground connection, microcomputer is exported high level from 57 pin after resolving, this voltage signal is added to diode D107 through resistance R 109 and makes its positively biased conducting, make triode Q107 conducting by 51 pin output high level this moment, and while turn-on transistor Q102, Q103, thereby circuit is connected.When carrying machine under hands-free state, the voltage of telephone wire input is powered to the VCC end by the circuit that Q108 forms, can operate as normal to guarantee circuit.

2. mainly to act on be that number with keyboard input becomes corresponding pulse or double-audio signal to dial-up circuit, delivers on the outside line.Pulse/double-tone (P/T) frequently but comes strobe pulse or dual-tone dialing by the P/T switch though dial-up circuit has two kinds of dial modes, and they are not worked simultaneously, has realized that a certain moment only carries out a kind of operation of state work.The method of attachment of each parts as shown in Figure 2.

When pulse dialing, dial impulse is added to the base stage of triode Q107 by 50 pin of microprocessor U701, during pulse is disconnected, low level is ended triode Q107, by resistance R 103 triode Q102, Q103 are also ended in succession, after the polarity switching conversion, send pulse signal through outer alignment switch by TIP, RIN end.The dial impulse cycle passes through ending of foregoing circuit and sends to switch identification back calling party like this, finishes the process of whole pulse dialing to this.

When dual-tone dialing, signal is by the 49 pin output of little processing U701, the base stage that adds to triode Q129 through resistance R 123 is after it amplifies signal, output to resistance R 111 from collector electrode and be added to the base stage of Q104 again after further amplifying, export to the polarity switching conversion through triode Q103, Q102 successively, by TIP, RIN end calling called subscriber after outer alignment switch is discerned, finish the dual-tone dialing process to this.

In this partial circuit of dial-up circuit, resistance R 111, R126, R112 and capacitor C 105 are the balanced element of double-audio signal, to guarantee the double-audio signal conformance with standard.Resistance R 113 is the emitter current negative feedback resistor of triode Q104, is used to guarantee the job stability of triode Q104.In addition, at the double-audio signal dialing status, the dual-tone dialing signal adds to triode Q104 through resistance R 111, also is added on 5 pin of conversation integrated circuit U501 through resistance R 119 simultaneously, output after treatment, thus make and the time can from receiver or loudspeaker, hear dialing tone in dialing.

3. power circuit is divided into external power adapter power supply and two kinds of situations of reserve battery power supply.The method of attachment of each parts as shown in Figure 4.

When external power adapter is powered, direct current 15V voltage is divided into three the tunnel after entering through Direct current power source socket, one the tunnel through after passing through isolating diode D310, inductance L 301 and capacitor C 303 decoupling filtering successively, be added to the input of circuit of three-terminal voltage-stabilizing integrated U302, voltage after the voltage stabilizing from the output of VCC end, is made work power supply for the circuit in the main frame through isolating diode D305; Another road becomes about 5V via triode Q303, rectifier diode ZD301, resistance R 308 and the voltage stabilizing circuit voltage stabilizing that capacitor C 307 is formed, this signal one tunnel is exported to interlock circuit via isolating diode D314 by VCC and is made power supply, and other one the tunnel through diode D311, the D315 enabling signal as battery output.When the external power adapter operate as normal, because the 5V voltage regulation signal makes diode D311 conducting, diode D315 ends, and makes the output open circuit of battery.When external power adapter can't be powered, because the 5V voltage regulation signal disappears, diode D311 is ended, diode D315 conducting, system is powered by reserve battery.Because the voltage of reserve battery is low, the voltage that need provide battery by the oscillating circuit that integrated circuit U301 forms promotes the back and supplies with the telephone set use.Oscillating circuit comprises U301A, U301B, U301C, U301F, diode D311～D314, D303 and D308, wherein U301F, D311～D314, D303 and D308 are the concussion control circuit, the U301C buffering is amplified the voltage signal that receives, promote the voltage doubling rectifing circuit work that triode Q301, Q302, capacitor C 302, diode D301 and D302 form, cell voltage is raise, output to VCC2 voltage through behind inductance L 301, capacitor C 301 and the U302 filtering voltage regulation again.

4. speaking circuit is made up of handle speaking circuit and hand-free circuit.

1) the handle speaking circuit comprises integrated circuit U501.The method of attachment of each parts as shown in Figure 5.

The handle speaking circuit with outside the connection process of circuit, handle is in off hook state, the selector switch HS1 conducting of HS1 and HS2, the DC feedback of outside line input is via the polar switching of the unidirectional bridge rectifier of four diode D101～D104 composition, be connected to the collector electrode of the contact of HS1 switch connection receiving triode Q101 again through resistance R 121 and make basic conducting to resistance R 104, the base stage that is added to triode Q102 makes saturation conduction, and handle speaking circuit and outside line are connected, and realizes conversation.

In the telecommunication signal flow process path, after voice signal carries out the acoustic-electric conversion by the MIC501 transmitter, receive 7 pin of U501 successively through capacitor C 513, resistance R 514, amplify the contact of back, flow through triode Q102 and output to polarity switching and outside line connection from emitter from the connection of the 1 pin output process HS2 switch of U501.

In the accepted call signal flow process path, the voice signal that outside line is sent here is passed through the contact of HS2 switch connection to Q102 through polarity switching by the input of TIP, RIN end, the resistance R of flowing through 502, capacitor C 503 capacitive coupling are sent into 10 pin of U501, amplifying signal is from the 4 pin output of U501, by capacitor C 509 capacitive coupling, be added to the SPK501 receiver and make its sounding.

The anti-side-tone circuit of handle conversation is made up of resistance R 502, R503, R506, R507 and balance circuitous resistance R504, R505, C502.The effect of this circuit is for the signal of telecommunication that prevents to send feeds back to PAC circuit through resistance R 502 and capacitor C 503, disturbs and is talked about normally.When handle is talked about, transmitter MIC501 becomes 7 pin that the signal of telecommunication is added to U501 through capacitor C 513 and resistance R 514 to voice signal after treatment, 1 pin by U501 outputs to outside line, also has simultaneously one the road to return 10 pin of U501 through resistance R 502, capacitor C 503 from outside line.

MIC501 is input to the signal of 7 pin of U501 simultaneously, and one the tunnel is the 1 pin output from microprocessor U701, also has one the tunnel to be from the output of 10 pin, also is added to 10 pin of U501 through resistance R 506, resistance R 503, capacitor C 503.

Because this two paths of signals phase place of above-mentioned 10 pin that return U501 is opposite, cancel out each other, thereby make the signal of seeing and feed back to PAC circuit off weakened, even eliminate fully, therefore played the effect of eliminating sidetone.

In the handle speaking circuit, the effect of other peripheral cell is as follows:

The 15 pin outer meeting resistance R511 of U501 change the value of this resistance for sending, talked about automatic gain control circuit, can make give, the amplification quantity of PAC circuit controlled, control range is at 6dB.

2, the 3 pin outer meeting resistance R508 of U501 regulate resistance for sending the words amplifier gain, and 2 pin external capacitor C504 have formed low-pass first order filter with resistance R 508 again, and cut-off frequency is by the value decision of RC, in order to the stable operating state of sending the words amplifier.

4, the 5 pin outer meeting resistance R513 resistance of U501 are talked about Amplifier Gain for being talked about the amplifier gain regulating element in order to change, and adjustable range is 20 to 39dB, and to adapt to the receiver of different sensitivity, capacitor C 509 is the output coupling capacitor of receiver signal.

The 6 pin external capacitor C516 of U501 are high-frequency bypass capacitor.Swept resistance VR501 is that resistance is regulated in the transmitter power supply.

The external resistance R 412 of 8 pin of U501 is the adjusting resistance of IC internal current stabilizer.

The 10 pin external capacitor C503 of U501 are accepted call signal input coupling electric capacity, and capacitor C 505 is a high-frequency bypass capacitor.

The 13 pin external capacitor C512 of U501 are the decoupling filter capacitor, and capacitor C 511 is a high-frequency bypass capacitor.

The 14 pin external capacitor C506 of U501 are the external decoupling filter capacitor of IC internal voltage regulator.

2) hand-free circuit comprise hand-free call, antisinging, the control circuit of uttering long and high-pitched sounds.The method of attachment of each parts as shown in Figure 6.

In the connection process of hand-free circuit and outer circuit, after pressing Hands-free key " HF ", 66 pin of U701 are low level, make 57 pin output the becoming high level of U701, this signal is successively through resistance R 109, diode D107's, the base stage of Q107 also makes its conducting, current collection very low level to make the base stage of triode Q103 through resistance R 103 be also conducting of low level, and then triode Q102 conducting is connected telephone set and outer circuit, voltage after polar switching is connected to the contact ON2 end of HS2 switch connection through the emitter of triode Q102 conducting, through diode D601 to T601, be connected to receive after capacitor C 601 filtering diode ZD601 voltage stabilizing be about 6.2V as the dc working circuit of handfree circuit, so far handfree circuit enters operate as normal.

In the hands-free telecommunication circuit, the telecommunication circuit signal is after the conversion of MIC601 transmitter acoustic-electric, amplify from emitter to the base stage of resistance R 613 and triode Q603 through capacitor C 610 capacitor filterings, signal after the amplification is exported from collector electrode, send into 10 pin of U610C to capacitor C 607 by resistance R 611, amplify U610D is sent in the back from the 8 pin output of U610C 12 pin, through amplifying the 14 pin output of back again from U601D, the contact of receiving the HS2 switch connection through T602 speech coupling transformer to capacitor C 602 filtering is added to polarity switching output through Q102, by TIP, the RIN end send outside line.

The hands-free word in the path, the voice signal of exterior string input is held input by TIP, RIN, behind polarity switching, be input to 3 pin of U602 successively through contact ON2, capacitor C 602, the high low switch of the hands-free volume of T602, VOL-SW or resistance R 642, R643, R633, the resistance C628 coupling of triode Q102, HS2 switch closure, audio signal after the amplification is added to SPK by capacitor C 626 couplings and goes up its sounding of promotion from the 5 pin output of U602.

In the antisinging and the control circuit of uttering long and high-pitched sounds, produce singing and utter long and high-pitched sounds the work of handfree circuit employing simplex mode when hands-free for fear of using.Adopt voice signal control electric switch, make transmission, accept circuit working and change automatically, turn off transmission during reception, turn off reception during transmission, switching circuit utilizes the both sides time slot of talking to switch, so the user can not feel to have interrupted sense.

Send under the speech phase, the voice signal that amplifies through triode Q603 is divided into two-way, and one tunnel 10 pin of delivering to U601 through resistance R 611, C607 amplify; 3 pin of U601A are sent on another road to resistance R 623 through capacitor C 633, amplify the 1 pin output of back as the control signal of giving orders or instructions from U601A, voltage doubling rectifing circuit rectification via capacitor C 619, C621, diode D610 and D611 composition, produce and be divided into two-way behind the direct-current control voltage about a 1.2V: the one tunnel is added to triode Q602 base stage saturation conduction through resistance R 632, and accepted call signal is shorted to ground; Another road is added to the base stage saturation conduction of triode Q602 through resistance R 606 resistance, with resistance R 607 short circuits, the external amount of negative feedback of reverse signal input of U601C amplifier is changed, the gain of this operational amplifier is improved, and then improved to send and gained.This moment, hand-free circuit did not have the signal of giving orders or instructions.

Be subjected under the speech phase, voice signal is through TIP, resistance R IN outside line input, after the polarity switching rectification, successively by being divided into two-way after triode Q102, HS2 switch, the coupling of capacitor C 602 to T602 speech coupling transformers: the one tunnel through the VOL-SW switch or successively by resistance R 642, R643, R633, capacitor C 628, through delivering to 3 pin of U602 behind the capacitor filtering, the 5 pin output from U602 after power amplification goes to promote the SPK sound horn; Another road is added to 5 pin of U601B through resistance R 615, capacitor C 612, exported from 7 pin of U601B after control signal is amplified as talking about, voltage multiplying rectifier power rectifier through capacitor C 614, C615, diode D605 and D606 composition, the direct-current control voltage that obtains makes the conducting of D607 positively biased, 3 pin that are equivalent to U601A exchange ground connection by capacitor C 617 electric capacity, thereby have closed the input that transmits control signal; Simultaneously, in order to prevent that the signal feedback that loudspeaker send from arriving transmitter, influence receiving speech quality, (being capacitor C 626 anodal places) has one road signal to pass through the C632 capacitive coupling again at SPK loudspeaker place, be added to diode D613, after the voltage doubling rectifing circuit that D612 and capacitor C 620 are formed is handled, the control voltage that produces is through resistance R 629, be added to triode Q605 base stage by resistance R 625 after the R626 dividing potential drop, make its saturation conduction, be equivalent to by resistance R 621, capacitor C 618 and resistance R 628 are with telecommunication signal ground connection, weakened the output signal of triode Q603 collector electrode, thereby avoided producing singing in the hand-free call process or uttering long and high-pitched sounds.

5. ringing circuit comprises U201, transformer T201, loud speaker SPK, resistance R 201～R203, capacitor C 201～204 and triode Q201.The method of attachment of each parts as shown in Figure 3.

Under hook state, the bell signal of outside line incoming call, enter in the machine through TIP, RIN, by 1,2 pin of receiving U201 after capacitor C 201, the R201 step-down, inside at U201, by rectification circuit and the external filter capacitor C203 of 7 pin ac ringing voltage is become direct voltage, and then direct voltage is become the signal voltage of high and low two kinds of frequencies that replace, this voltage by 5 pin output through ring output transformer T201 elementary after being coupled from secondary output, SPK sends the tinkle of bells with this driven loud speaker, has phone to squeeze into expression.

In the ring integrated protective circuit; triode Q201, resistance R 204 be in order to protection ring integrated circuit U201 can be the time because of hand-free call voltage raise and custom-designed; this is because the output of ring and handfree circuit all uses loud speaker SPK; because the primary coil number of T201 is many; number of secondary turns is few; when hand-free call, T201 is equivalent to a step-up transformer, and the secondary back primary voltage that hand-free call voltage is added to T201 will raise.This voltage just may damage U201 after directly being added to 5 pin of ring integrated circuit U201.In ringing circuit, increased this protective circuit for this reason.

6. the central processing unit circuit is made up of U701 (HAR1002) integrated circuit, and this IC adopts the soft encapsulation technology of 80 pin, and chip directly is encapsulated on the circuit board.The method of attachment of each parts as shown in Figure 7.

Reset circuit comprises Q716, Q717, during circuit working, the moment of plugging outside line or plugging in, the 54 pin RESET reset signal inputs of microprocessor U701 are sent into voltage signal by resistance R 701 current-limiting resistances in the VDD power supply, but because the 54 pin external capacitor C705 of U701, the voltage on the electric capacity can not saltus step, therefore produces a reset level from low to high, microprocessor is resetted, guarantee its operate as normal.

Clock vibrations circuit is divided into two parts, a part is the 3.58MHz clock oscillation that interior circuit of 47,48 pin of U701 and external Y702, capacitor C 703 and the C704 of base stage form, the 32.768KHz clock oscillation circuit that another part is made up of circuit in 45,46 pin of U701 and external X701, capacitor C 701 and capacitor C 702 thereof.Holding state is kept the circuit working and the liquid crystal display of integrated circuit clock by the work of 32.768KHz oscillator, and this moment, phone was low-power consumption.3.58MHz oscillator work during the phone dialing.

In the muting control circuit, 53 pin of microprocessor U701 are quiet control signal output ends, and this pin is output as low level when phone dials, and this signal has been closed the hands-free circuit of sending out, be subjected on the one hand; Make diode D111 conducting on the other hand and Q105 is ended, after triode Q105 ends, be added to triode Q106 base stage through resistance R 120 makes its conducting to high level on its collector electrode on the one hand, be equivalent to and it extinguished dial pilot lamp LEK101 two terminal shortcircuits, 12 pin that make U501 on the other hand are high level, thereby close U501, the sending out of handle speaking circuit, PAC circuit are not worked, realized quiet controlled function.

In the keyboard input circuit, 72～77 pin of U701 microprocessor are keyboard matrix circuit ordinate section, and 67～71 pin are keyboard matrix circuit horizontal line section, and ordinate has just constituted keyboard matrix circuit with intersecting of horizontal line.Can form 30 keyboard input circuits, settle switch,, realize the control of dialing and function corresponding with regard to the input of may command signal at square crossing point.

In the display circuit, 1～40 pin of U701 microprocessor is a liquid crystal display field drive signal output, and 41～45 pin are liquid crystal display common drive signal output part, and they adopt corresponding one by one type of drive with the LCD1644 LCDs.Be used for information such as demonstration time, number and date.

In the early warning circuit, 55 pin of U701 microprocessor are infrasonic detection device signal input part, and 56 pin are sound early warning signal output, after the detection signal that the infrasonic detection device sends is imported 55 pin, and whether early warning of microprocessor judges again.The output of sound early warning signal is exported by 56 pin.

In the remote control identification circuit, after accepting circuit and identified user instruction by wireless remote control, output signal is sent into microprocessor by the 58-61 pin of U701 handle.

7. infrasonic detection device circuit comprises infrasonic detection device IC801 (GCZ1100), microphone MIC801.The method of attachment of each parts as shown in Figure 8.

The detection principle of IC801 is: when the gas in the confined space changes, one of meeting generation is lower than people's ear and can hears the signal of frequency (15Hz), after signal is detected by transducer, through producing a pulse signal output after preposition amplification, comparison, the shaping.After output signal entered microprocessor U701, as the early warning enabling signal, microprocessor was ignored early warning, sound early warning or is dialed the emergency call of storage according to user's security settings decision.

8. radio circuit of the present utility model is made up of radio-frequency transmissions circuit in the remote controller and the radio-frequency (RF) receiving circuit in the main frame.The method of attachment of each parts of radio-frequency (RF) receiving circuit is shown in Fig. 9 (a), 9 (b).

Fig. 9 (b) radio-frequency transmissions circuit part belongs to the portable product of key button, owing to can divide multiple by the joystick key number.The utility model adopts four joystick key wireless launchers, and its size (comprising battery) only is 67 * 36 * 14mm.Used surface acoustic wave (SAW) resonator with high frequency stability, resonance frequency is U frequency range 418.00MHz.Modulation signal is by inner serial address sign indicating number and the data that produce of PT2262.Address code is in order to distinguish different users, and the digital same user's of realization multichannel control is handled.The user just can export encoded address and data pulse string and be input to the transmitting tube base stage as long as select arbitrary control button among A～D, and reflector just is activated work.Release button, emission stops.The frequency-selective circuit LC of transmitting tube collector electrode only need transfer near the natural resonance frequency near SAW, and during reflector work, its emission frequency can be locked on the 418.00MHz frequency automatically, and LC loop resonance amplitude reaches maximum simultaneously.

The multichannel remote signal that Fig. 9 (a) radio-frequency (RF) receiving circuit part can be sent coded transmitter with the electromagnetic wave form here is after reception, demodulation, amplification, shaping and decoding, directly the high level drive signal is controlled in the interlocking of output multichannel, and each road signal all can be discerned and handle accordingly by microprocessor U701.

Claims (9)

1, a kind of telephone set with safe early warning function, it is made up of main frame and remote controller two parts, host machine part comprises polarity switching, power circuit, start-up circuit, dial-up circuit, speaking circuit, ringing circuit, liquid crystal display circuit, it is characterized in that also comprising: central processing unit circuit, infrasonic detection device circuit and radio-frequency transmissions circuit, remote controller partly comprises radio-frequency (RF) receiving circuit.

2, the telephone set with safe early warning function as claimed in claim 1, the outside line interface that it is characterized in that host machine part is connected with input TIP, the RIN of polarity switching, and the output of polarity switching is connected with output, input T1, the R1 of ringing circuit, output LN, the LNN of speaking circuit of the input of start-up circuit, dial-up circuit; The output HKS of start-up circuit is connected with central processing unit circuit start control pin 51 pin, and the output XMUTE of start-up circuit is connected with the control input end of speaking circuit; Three input DTMF, DP of dial-up circuit, HFO are connected with central processing unit circuit dialing output pin 49,50,57 pin respectively; The input DTMF of speaking circuit is connected with central processing unit circuit dialing output pin 49 pin; The output SPK of ringing circuit is connected with the input of hand-free circuit; The liquid crystal display circuit input shows that with the central processing unit circuit control pin 1～44 pin is connected; The output VVOUT of infrasonic detection device circuit is connected with central processing unit circuit infrasound detection signal input pin 55 pin; Output PA～the PD of radio circuit receives pin 58～61 with the central processing unit circuit and is connected.

3, the telephone set with safe early warning function as claimed in claim 1, it is characterized in that described central processing unit circuit comprises little process chip U701,55 pin of U701 meet the output VVOUT of infrasonic detection device circuit, 56 pin of U701 are the output of sound early warning signal, the input that connects warning circuit, in order to the signal of 55 pin input is exported after treatment, 58～61 pin of U701 meet the output PA～PD of radio circuit.

4, the telephone set with safe early warning function as claimed in claim 1 is characterized in that described radio circuit is made of the radio-frequency transmissions circuit of remote controller part and the radio-frequency (RF) receiving circuit in the telephone set; Described radio-frequency transmissions circuit comprises that line of codes, encoder U901, quadruple linkage keyboard and radiating circuit connect to form; Line of codes is connected with the address input end of encoder, and the quadruple linkage keyboard is connected with the data input pin of encoder, and the output of encoder is connected with the input of radiating circuit, and the output of radiating circuit is connected with transmitting antenna; Described radio-frequency (RF) receiving circuit comprises line of codes, decoder U902, radiofrequency signal receiving circuit; Reception antenna is connected with the input of radiofrequency signal receiving circuit, and the output of radiofrequency signal receiving circuit is connected with the data input pin of decoder, and line of codes is connected with the address input end of decoder, and the output of decoder is as the output of radio circuit.

5, the telephone set with safe early warning function as claimed in claim 1 is characterized in that described infrasonic detection device circuit comprises that chip IC 801, transducer MIC801, capacitor C 801～C810, potentiometer VR801 connect to form; The end of transducer MIC801 is connected the input as chip, other end ground connection with 13 pin of IC801; 17 pin of IC801 are connected the other end ground connection of capacitor C 809 as output with 55 pin, the capacitor C 809 of central processing unit circuit; One end of capacitor C 801 links to each other minus earth with the stiff end of 2 pin of IC801 and swept resistance VR801; Another stiff end of swept resistance VR801 links to each other with 15 pin of IC801, and the sliding end of swept resistance VR801 links to each other with 20 pin of IC801; Capacitor C 802 link to each other with 1 pin IC801, the other end links to each other with 3 pin of IC801; The anode of capacitor C 803 links to each other minus earth with 5 pin of IC801; The anode of capacitor C 804 links to each other with 4 pin of IC801, and negative electrode links to each other with 10 pin of IC801 and the end of C805; The other end of capacitor C 805 links to each other with 8 pin of IC801; One end of capacitor C 806 links to each other other end ground connection with 9 pin of IC801; The anode of capacitor C 807 links to each other other end ground connection with 11 pin of IC801; The anode of capacitor C 808 links to each other other end ground connection with 12 pin of IC801; One end of capacitor C 809 links to each other with 17 pin of IC801, other end ground connection, and the anode of capacitor C 810 links to each other with 18 pin of IC801, and negative electrode links to each other with 19 pin of IC801; 6 pin of IC801 connect positive supply; 14, the 16 pin ground connection of IC801.

6, the telephone set with safe early warning function as claimed in claim 1 is characterized in that described dial-up circuit is made of pulse dialing circuit and dual-tone dialing circuit; Described pulse dialing circuit comprises that resistance R 127, R103, R101, R102 and triode Q107, Q102, Q103 and resistance connect to form; The end of the base stage connecting resistance R127 of triode Q107D and 50 pin of U701, the end of collector electrode connecting resistance R103, grounded emitter; The other end ground connection of resistance R 127; Base stage and the resistance R 102 of another termination triode Q103 of resistance R 103, the collector electrode connecting resistance R101 of triode Q103 and the base stage of triode Q102, the transmission utmost point of triode Q103 and the emitter parallel connection of triode Q102; The emitter of the other end of the other end of resistance R 102 and resistance R 101, triode Q102 also is connected to the input of polarity switching; Described dual-tone dialing circuit comprises that connecting resistance R122～R124, R126, R112, triode Q109, Q104 and capacitor C 101 connect to form.

7, the telephone set with safe early warning function as claimed in claim 1 is characterized in that described ringing circuit comprises that ring integrated circuit U201, transformer T201, loud speaker SPK, resistance R 201～R203, capacitor C 201～204, protective circuit and triode Q201 connect to form; 1,2 pin of ring integrated circuit U201 connect TIP, RIN end respectively, in order to receive the signal of outside line incoming call; Described protective circuit comprises triode Q201, capacitor C 204, can not raise by voltage when the hand-free call in order to protection ring integrated circuit U201; Another input of loud speaker is received on the SPK end.

8, the telephone set with safe early warning function as claimed in claim 1 is characterized in that described speaking circuit is made of handle speaking circuit and hand-free circuit; Described handle speaking circuit comprises that integrated circuit U501, transmitter MIC501, receiver SPK501, anti-side-tone circuit, signal rectifier circuit connect to form; Transmitter MIC501 output links to each other with capacitor C 513, and the other end of capacitor C 513 is received 7 pin that are input to U501 after the resistance R 514, and receiver SPK501 input links to each other with capacitor C 509, and 4 pin of the other end of capacitor C 509 and U501 link to each other; Described anti-side-tone circuit comprises that resistance R 502～R507, capacitor C 502 connect to form; Described hand-free circuit comprises four high guaily unit integrated amplifier U601 and power amplifier integrate circuit U602.

9, the telephone set with safe early warning function as claimed in claim 1 is characterized in that described power circuit is made up of external power adapter circuit and battery feed circuit; Described external power adapter power supply circuits are connected to form by diode D305, D310, inductance L 301, capacitor C 303, integrated circuit U302, triode Q303, voltage stabilizing didoe ZD301, resistance R 305, capacitor C 304 and diode D314; Described battery feed circuit is connected to form by diode D301, D302, D311, D312, D315, integrated circuit U301, U302, triode Q301, Q302, capacitor C 302, C301 and inductance L 301, resistance R 301, R303.

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