CN203422807U

CN203422807U - Bidirectional electronic greeting device

Info

Publication number: CN203422807U
Application number: CN201320415615.1U
Authority: CN
Inventors: 郑玉龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-13
Filing date: 2013-07-13
Publication date: 2014-02-05
Anticipated expiration: 2023-07-13

Abstract

Provided is a bidirectional electronic greeting device, which is an electronic greeting device capable of realizing direction identification. Two light-sensitive detectors are installed on a shell of the device and respectively face towards the inside of a door by a certain angle and the outside of the door by a certain angle, wherein the light-sensitive detector facing towards the outside of the door is connected with a trigger pin for guest greeting word broadcasting of a music integrated circuit through a transistor electronic switch, the light-sensitive detector facing towards the inside of the door is connected with a trigger pin for guest seeing-off word broadcasting of the music integrated circuit through the transistor electronic switch, and a loudspeaker is arranged at the output end of the music integrated circuit. Being placed beside a doorway, the bidirectional electronic greeting device automatically broadcasts guest greeting word speech when a person goes inside a door and automatically broadcasts guest seeing-off word speech different from the guest greeting word speech when a person goes outside the door.

Description

Bidirectional electronic guest greeting device

Technical field

The utility model relates to a kind of electronic guest greeting device, especially has the electronic guest greeting device of direction recognition function.

Background technology

At present, known electronic guest greeting device is all provided with one and surveys the electronic induction device that human body is walked about, and when sensing and having human body to walk about in certain scope, just triggers the content that guest greeting device is reported welcome's word.When having guest to walk to enter, guest greeting device will be reported welcome's word automatically one time: " you are good such as guest greeting device is placed in to doorway! Welcome! ".When guest withdraws from a room when will walk to go out, guest greeting device also has sensed that human body walks about, and guest greeting device also should be reported welcome's word one time: " you! Welcome! " this can allow owner and guest all feel very awkward, because people do not wish the welcome word of guest greeting device report such as " welcome " when guest walks to go out.

So, electronic guest greeting device of the prior art can not be distinguished guest and walks to enter next or walk to go out, no matter guest walks to enter, come or walk to go out, existing electronic guest greeting device all only can be reported same welcome word, and this does not meet the requirement of focusing on courtesy occasion.

Summary of the invention

Whether electronic guest greeting device of the prior art is to utilize light sensation principle to survey in certain scope, to have human body to walk about, by triggering music integrated circuit, drive loudspeaker to play sound, in order to overcome existing electronic guest greeting device, can not distinguish guest and walk to enter and come or the deficiency of walking to go out, the utility model provides a kind of bidirectional electronic guest greeting device, and this guest greeting device not only can automatically be reported welcome's word when having guest to walk to enter: " you are good! Welcome! " and can when guest walk to go out, report and give predicate: " thanks! Goodbye! ", that is to say, bidirectional electronic guest greeting device provided by the utility model, has direction recognition function, can distinguish guest and walks to enter next or walk to go out, and when guest enters and gos out, report respectively the word of ushering in and out of different content.

The technical scheme that the utility model adopts is: two light sensation detectors are installed on shell, certain angle and towards certain outdoors angle in door respectively, towards light sensation detector outdoors, by transistor electronic switch, be connected with the triggering pin of the report welcome word of music integrated circuit, light sensation detector in door send the triggering pin of predicate to be connected by transistor electronic switch and the report of music integrated circuit, the output terminal of music integrated circuit is connected to loudspeaker, music integrated circuit drives respectively loudspeaker play welcome's word of different content and send predicate according to the trigger pip that triggers pin from difference.Music integrated circuit is selected the music integrated circuit that can close all triggering pins when playing sound.

When having guest to walk to enter, towards light sensation detector outdoors, first having detected human body walks about, just first triggering music IC drives loudspeaker to report welcome's word, afterwards, although the light sensation detector in door has also detected human body and walked about, due to the state of music IC in broadcasting, so temporarily cannot trigger music IC report, send predicate, until music IC by welcome's word intactly play one time complete, guest has but left the investigative range of the light sensation detector in door.Therefore reach guest greeting device when guest enters and only reported the object of welcome's word.

Same reason, when having guest to walk to go out, light sensation detector in door first detects human body and walks about, just first trigger music IC and drive loudspeaker to report to send predicate, afterwards, although also detected human body towards light sensation detector outdoors, walk about, but music IC has been in the state of broadcast, so temporarily cannot trigger music IC, play guest greeting device, until music IC will send predicate to finish, guest has but left the investigative range towards light sensation detector outdoors.Therefore having reached guest greeting device when guest gos out only reports the object of sending predicate.

Accompanying drawing explanation

Fig. 1 is direction identification principle of work schematic diagram of the present utility model.In figure, what K represented is the cross-sectional view of shell of the present utility model, shell towards Men Nei with towards position outdoors, have an aperture, inside respectively there is a conduit to be connected with aperture, respectively there is a photoresistance other end of conduit, wherein CDS1 is the photoresistance towards outdoors, and CDS2 is the photoresistance in door.A place means a position outdoors, and a manikin figure and an arrow at A place indicate that guest walks to enter from A, and B place means a position in door, and a manikin figure and an arrow at B place indicate that guest walks to go out from B.Among a dotted line between CDS1 and A represents the investigative range of A position in CDS1, among a dotted line between CDS2 and B represents the investigative range of B position in CDS2.

Fig. 2 is internal circuit schematic diagram of the present utility model.In figure, R1, R2, R3, R4, R5, R6 are conventional, electric-resistance, and CDS1 and CDS2 are photoresistance, and Q1 and Q3 are NPN type triodes, Q2 and Q4 are positive-negative-positive triodes, and C1, C2, C3, C4, C5 are electric capacity, and SP is loudspeaker, U1 is music integrated circuit, is also called music IC.6 pins of U1 in figure, have only been drawn, wherein, VCC pin connects positive source, and GND pin connects power cathode, OUT1 pin and OUT2 pin connect loudspeaker, IN1 pin and IN2 pin are respectively welcome's word and the triggering pin that send predicate, with high level, trigger effectively, that is to say, if at a high level of IN1 pin input, U1 will drive loudspeaker to report welcome's word, if at a high level of IN2 pin input, U1 will drive loudspeaker to report and send predicate.

Embodiment

Three joint No.5 cells are connected into electric battery, as the power supply of bidirectional electronic guest greeting device described in the utility model.

According to Fig. 2, connect circuit, wherein CDS1 and CDS2 are used common photoresistance, R1 and R4 use resistance are the resistance of 82 kilo-ohms, it is the resistance of 20 megaohms that R2 and R5 are used resistance, R3 and R6 use resistance are the resistance of 43 kilo-ohms, C1 and C3 use capacity are the electrochemical capacitor of 1 microfarad, C2 and C4 are used the ceramic disc capacitor that specification is 103, C5 is used the ceramic disc capacitor that specification is 104, Q1 and Q3 are used the triode that specification is 9014, Q2 and Q4 are used the triode that specification is 9013, and SP is used little cone formula loud-speaker.

Here to describe about U1 selecting method in detail.Music IC kind on electronic market is a lot of at present, some music IC only have a triggering pin can only report a kind of music, some music IC have many to trigger pin, trigger different pins and just report different music, U1 of the present utility model has selected plural triggering pin and can report welcome's word: " ding-dong! Hello! Welcome! " and give predicate: " thanks! Goodbye! " the music IC of these two kinds of music.If triggering pin when playing music, some music IC have again input trigger pip, will stop current in progress music, replay the music being just triggered at once, when playing music, the music IC also having in addition can close triggering pin, wait until that current music is intactly played after one time, the trigger pip that triggers pin could trigger music IC and play next music, U1 of the present utility model should select when playing music can close the music IC that triggers pin, in order to avoid the trigger pip that the sound of playing is inserted into interrupts.

Next the principle of work of circuit shown in analysis chart 2, CDS1 and R1 series connection are on direct supply, when being reflected to the light luminance of CDS1 and occurring that light and shade changes, the resistance of CDS1 will become greatly and diminish thereupon, and the magnitude of voltage between CDS1 and R1 also can uprise step-down thereupon, just has small charging and discharging currents in C1, this electric current is after Q1 amplifies, drive Q2 saturation conduction, be equivalent to transistor electronic switch closes, at the IN1 of U1 pin, just can obtain the trigger pip of a high level.Because the capacity of C1 is less, so the charge and discharge process time of C1 is shorter, that is to say, the light and shade of the every generation of light luminance that reflexes to CDS1 changes, in C1, just there is the current impulse once discharging and recharging, Q2 will saturation conduction once, at the IN1 of U1 pin, will obtain an of short duration high level pulse.

Same reason, when being reflected to the light luminance of CDS2 and occurring that light and shade changes, also can obtain an of short duration high level pulse at the IN2 of U1 pin.

If the IN1 pin of U1 first runs into trigger pip, U1 just plays welcome's word music, and these two of the IN1 of U1 and IN2 trigger pins and temporarily keep closed condition, wouldn't accept extraneous trigger pip.In like manner, if the IN2 pin of U1 first runs into trigger pip, U1 just plays and send predicate music, and in the process of playing music, closes two and trigger pin.

The following describes the installation method of two photoresistance on shell: on shell, towards the position of direction outdoors and in door, respectively open an aperture, the black conduit that respectively has approximately 15 millimeters of diameter 5 mm lengths of a both ends open in hole, one end of conduit is connected with aperture, photoresistance is fixed on the conduit other end, the effect of conduit is for shading on the one hand, in order to avoid photoresistance is subject to light disturbance, conduit can allow the induction range of photoresistance more concentrated on the other hand, such as the CDS1 in Fig. 1, can only detect the human body at A place walks about, the human body that but can not detect B place is walked about.

Next contrast Fig. 1 and analyze the principle that realizes direction identification of the present utility model.If have guest from coming in outdoors toward door, in human body process A place, because people's health is to the reflection of ambient light or block, CDS1 will sense that the light and shade of light luminance changes, CDS2 but can not sense that the light that this guest causes changes, so transistor electronic switch Q2 saturation conduction in internal circuit, Q4 is remain off still, the IN1 pin of U1 just obtains a high trigger signal, U1 just drives loudspeaker to play the music of welcome's word content, and close two simultaneously and trigger pin, when guest goes to B place from A, although CDS2 has sensed the light luminance variation that human body is walked about and caused, but because welcome's word does not also play, two of U1 are triggered pin in closed condition, the state until U1 just can resume work two triggering pins after the music of welcome's word content of reporting is intactly finished, can guest at this moment leave position, B place.So, reached the object that guest greeting device when guest enters is only reported welcome's word.

Same reason, if have guest from door toward going on foot outdoors, in process B place, only have CDS2 to sense the light luminance variation that this guest walks about and causes, Q4 saturation conduction in internal circuit, Q2 is remain off still, the IN2 pin of U1 just obtains a high trigger signal, U1 just drives loudspeaker to play and send predicate, close two simultaneously and trigger pin, when this guest goes to A place, two are triggered pin also in closed condition, until U1 just can recover two duties that trigger pins afterwards sending predicate intactly to finish, can guest at this moment leave position, A place.So, reached guest greeting device when guest gos out and only reported the object of sending predicate.

Claims

1. bidirectional electronic guest greeting device, whether utilize light sensation principle to survey has human body to walk about in certain scope, by triggering music integrated circuit, drive loudspeaker to play sound, it is characterized in that: angle certain in door is installed respectively on shell and towards two light sensation detectors of certain outdoors angle, towards light sensation detector outdoors, by transistor electronic switch, be connected with the triggering pin of the report welcome word of music integrated circuit, light sensation detector in door send the triggering pin of predicate to be connected by transistor electronic switch and the report of music integrated circuit, music integrated circuit is exported respectively welcome's word sound and is sent predicate voice according to the trigger pip that triggers pin from difference.

2. bidirectional electronic guest greeting device according to claim 1, is characterized in that: music integrated circuit is selected the music integrated circuit that can close all triggering pins when playing sound.