CN2627600Y

CN2627600Y - Single-end human contact induction device

Info

Publication number: CN2627600Y
Application number: CN 03226338
Authority: CN
Inventors: 招瑞民
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-05-22
Filing date: 2003-05-22
Publication date: 2004-07-21
Anticipated expiration: 2013-05-22

Abstract

A single-terminal human body contacting induction system provides a device which can identify the effective human body contacting signal and delay sending out signal after effective signal contacting with the human body. The specific solution is to set up with a human body contacting sensing signal end which can send out sensing signal after human body contacting. The utility model is characterized in that the human body contacting sensing signal is connected with the input end of a modulation signal of a modulation periodic circuit; the modulation periodic circuit output end and a standard frequency generating circuit output end are connected with a frequency comparison circuit; the frequency comparison circuit output end is connected with a delay switch control circuit; the delay switch control circuit output end is connected with a video or audio frequency circuit; the video or audio frequency circuit output end is connected with a corresponding monitor or a loudspeaker.

Description

A kind of single-ended human body touch induction device

Technical field

The utility model belongs to a kind of human-induced signal's device.

Background technology

Human-induced signal's device is the device that can send signal to human body sensing, be used for guard against theft and alarm system more, also be useful on the toy, existing this class device mostly is one to be had the human-induced signal to import promptly to send alerting signal, and its input signal mostly is the contactless humanbody sensing signal.

Summary of the invention

The technical problems to be solved in the utility model provides a kind of can the discriminating human body contact induction signal, and delays time after effectively the human body activation signal connects bundle and send the single-ended human body touch induction device of video or sound signal.

The technical scheme that addresses the above problem is: the utility model is provided with the human body contact induction signal end that can send induced signal after human body contacts, it is characterized in that: the modulation signal input end of human body contact induction signal termination modulation oscillator circuit, modulation oscillator circuit output terminal and standard frequency generation circuit output end connect frequency comparison circuit, frequency comparison circuit output termination time-delay switch control circuit, time-delay switch control circuit output termination video or audio signal circuit, the display unit or the loudspeaker of video or audio signal circuit output termination correspondence.

Principle of work of the present utility model is: human body contact induction signal is to be fixed in a certain value range, after modulation oscillator circuit is received effective human body contact induction signal, be about to modulated signal and be input to frequency comparison circuit, compare with the standard frequency of standard frequency generation circuit input, when conforming to the fiducial value of setting, just understand the on-delay ON-OFF control circuit, when human body contact induction signal ended, the time-delay switch control circuit time delayed turn-off, utilize ON-OFF control circuit to turn-off pulse edge and trigger video or audio signal circuit, drive display unit or speaker operation.

The utility model is simple in structure, can discern single-ended human body contact induction signal, and time-delay triggers the audio or video signal circuit after effectively the human body activation signal connects bundle, send corresponding signal, can be used for toy, daily necessities or other products, to increase interest, also can be used for monitoring device.

Description of drawings

Fig. 1, the utility model frame principle figure

Fig. 2, the utility model example structure synoptic diagram

Fig. 3, Fig. 2 embodiment disassembled form structural representation

Fig. 4, the utility model embodiment circuit diagram

Fig. 5, usefulness integrated circuit 90103 replace the wiring diagram of Fig. 4 embodiment circuit

1-metal spoon 2-circuit board 3-loudspeaker 4-insulation spoon is 4a-plastics face-piece 4b-plastics drain pan

The 5-button cell

Embodiment

Described human body contact induction signal end is a metal spoon 1, metal spoon spoon is formed the insulation spoon between 4 the plastics face-piece 4a and plastics drain pan 4b being clipped in, and be electrically connected with the modulation signal input end SEN1 of modulation oscillator circuit, described video or audio signal circuit are audio signal circuit, its output termination loudspeaker 3, circuit board 2 and loudspeaker 3 are contained between plastics face-piece and the plastics drain pan, and button cell 5 is contained on the circuit board.

Button cell VDD power output end is in series with the constant-current source circuit of being made up of triode Q1, modulation oscillator circuit is made up of Q2, Q3, quartz crystal oscillator capacitor C W1 is connected between Q2, the Q3 emitter, and by R1, R2 ground connection, modulation signal input end SEN1 connects oscillating tube Q2 emitter to two emitters respectively.

Modulation oscillator circuit output terminal Q3 collector connects the input amplifier Q6 base stage of being made up of Q6 by C2, and the Q6 collector output connects the frequency comparison circuit Q7 base stage of being made up of Q7 by C3.

Q4, Q5 and quartz crystal oscillator capacitor C W2 form standard frequency generation circuit, its frequency output terminal connects frequency comparison circuit Q7 emitter by C5, frequency comparison circuit output terminal Q7 collector connects ON-OFF control circuit Q8 base stage by the whole circuit of capacitor C 4 and all-wave: C4 one end is connected with the Q7 collector, one end is by full-wave rectification diode D2 and D1 two branch road ground connection, be in series with resistance R 27 in the D1 branch road, R28, R27, the R28 dividing point connects switch triode Q8 base stage, charging capacitor C6 is connected in parallel on resistance R 27, the R28 two ends, delay circuit with Q7 collector resistance R25 composition, switching tube Q8 output termination switching tube Q9, Q9 output termination audio ic SG9035 trigger end TG, loudspeaker connects the SG9035 audio signal output end.

When the people holds the insulation spoon 4 uses, if the metal spoon touches human body (as mouth), will produce the capacitance variations induced signal, frequency to modulation oscillator circuit is carried out frequency modulation (PFM), the frequency that signal after the modulation is input to frequency comparison circuit and standard oscillatory circuit compares, under the situation of effectively human body contact, the AC signal of the big amplitude of Q7 output, through D1, time-delay provides bias voltage for Q8 after the D2 rectification, make its conducting, when effective human body contact induction signal ended, the AC signal of frequency comparison circuit output reduces, and deficiency is so that Q8, the Q9 conducting, at R25, the C6 effect down, time delayed turn-off along triggering SG9035, sends sound signal by loudspeaker behind its cut-off signals.

The child when having a meal with this metal spoon, at every turn with the spoon body after take out in the mouth, promptly can delay time and send music or other sound signal, increased interest.

Fig. 5 is for replacing the circuit diagram of present embodiment circuit with integrated circuit 90103.

When video of the present utility model or audio signal circuit adopt video circuit, but video display components such as its output terminal sending and receiving light pipe.

Claims

1, a kind of single-ended human body touch induction device, be provided with the human body contact induction signal end that can send induced signal after human body contacts, it is characterized in that: the modulation signal input end of human body contact induction signal termination modulation oscillator circuit, modulation oscillator circuit output terminal and standard frequency generation circuit output end connect frequency comparison circuit, frequency comparison circuit output termination time-delay switch control circuit, time-delay switch control circuit output termination video or audio signal circuit, the display unit or the loudspeaker of video or audio signal circuit output termination correspondence.

2, single-ended human body sensing device according to claim 1, it is characterized in that: described human body contact induction signal end is a metal spoon (1), metal spoon spoon is formed the insulation spoon between the plastics face-piece (4a) of (4) and the plastics drain pan (4b) being clipped in, and be electrically connected with the modulation signal input end (SEN1) of modulation oscillator circuit, described video or audio signal circuit are audio signal circuit, it exports termination loudspeaker (3), and circuit board (2) and loudspeaker (3) are contained between plastics face-piece and the plastics drain pan.