CN2824452Y - Elevator interphone - Google Patents
Elevator interphone Download PDFInfo
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- CN2824452Y CN2824452Y CN 200520074831 CN200520074831U CN2824452Y CN 2824452 Y CN2824452 Y CN 2824452Y CN 200520074831 CN200520074831 CN 200520074831 CN 200520074831 U CN200520074831 U CN 200520074831U CN 2824452 Y CN2824452 Y CN 2824452Y
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Abstract
The utility model discloses a kind of elevator intercom, for realizing elevator intercom MPTY, select the function of extension set, the utility model increases by an encoder on the basis of existing elevator intercom, decoder, central processing unit, audio amplifier circuit, encoder converts the extension of being dialed to the DTMF sign indicating number and delivers to bus, and decoder is delivered to central processing unit to the DTMF sign indicating number of receiving from bus interface, central processing unit compares DTMF sign indicating number and the loCal number received, exporting audio amplifier circuit to when two numbers are consistent reminds corresponding called party to answer, the called party answers the back both sides can also dial the third party that desire is called out again, four directions etc., thus realize selecting extension set, the function of MPTY.
Description
Technical field
The utility model relates to a kind of intercom, relates in particular to a kind of elevator intercom.
Background technology
The elevator intercom is meant and is used for needing the occasion conversed each other at lift car, sedan-chair top, machine room, night shift room, hoistway, Central Control Room etc., more particularly, this intercom is meant that working as elevator is in an emergency, the conversation when debugging, maintaining of conversation between the passenger of lift car the inside and night shift room, the Central Control Room or elevator.Existing elevator intercom requires to have the function of MPTY, on October 14th, 1998, disclosed CN1195931A patent documentation promptly disclosed a kind of elevator intercom that can MPTY, this kind intercom is realized car and machine room, the function that function that night shift room is directly conversed and night shift room and machine room are directly conversed, a kind of like this intercom, when car has the people to call out, whole equipment room, night shift room, the intercom of Central Control Room is jingle bell simultaneously, for occasion with multi-section elevator, the car which elevator the very difficult judgement immediately of operator on duty is is being called out, this is that the weak point of elevator intercom that can MPTY promptly can not be selected extension set, and another can select the elevator intercom of extension set, each extension set can be selected with which part machine to converse by one touch dialing, but can't realize multi-party simultaneous talking, this kind intercom has not met the conversation requirement of elevator intercom now.
Summary of the invention
The purpose of this utility model provide a kind of can MPTY and can select the elevator intercom of extension set.
The technical solution of the utility model is such: a kind of elevator intercom, comprise microphone, receiver, the described microphone of connection and receiver sound circuit, be connected amplifier that the sound circuit output is used to amplify voice signal, connect the bus that described amplifier out is used for transmitting audio signal, also comprise in addition:
A) encoder, described encoder input is connecting dialing keyboard and oscillator, and the output of described encoder is connecting second amplifier, and the output of described second amplifier is connected in bus;
B) decoder, described decoder input is connected with bus and oscillator;
C) central processing unit, the input of described central processing unit is connected with the decoder output, described central processing unit input is also connecting loCal number setting device and oscillator, described loCal number setting device is to be connected respectively between the input and ground wire of described central processing unit by 8 jumper switchs, and between described central processing unit input and jumper switch, be connected 8 pull-up resistors respectively, the output of described central processing unit is connecting audio amplifier circuit, and described audio amplifier circuit output is connecting loud speaker;
The power input of above-mentioned sound circuit, encoder, decoder, central processing unit is respectively connecting power supply.
Be connected normally-closed contact between the preferred above-mentioned elevator intercom, described decoder, central processing unit and power supply by the control of receiver off-hook switch.
Be connected normally opened contact between the preferred above-mentioned elevator intercom, described sound circuit, encoder and power supply by the control of microphone off-hook switch.
Preferred above-mentioned elevator intercom, described central processing unit is the AT89C2051 single-chip microcomputer.
Preferred above-mentioned elevator intercom, described second amplifier and amplifier become one.
Based on same inventive concept, the utility model provides another elevator intercom, comprise microphone, receiver, the described microphone of connection and receiver sound circuit, be connected amplifier that described sound circuit output is used to amplify voice signal, connect the bus that described amplifier out is used for transmitting audio signal, also comprise in addition:
A) first central processing unit, the described first central processing unit input is connecting callee's number setting device, oscillator and call button, described callee's number setting device is to be connected respectively between the input and ground wire of described first central processing unit by 8 jumper switchs, and between the described first central processing unit input and jumper switch, be connected 8 pull-up resistors respectively, the described first central processing unit output connects a relay, and the output of described first central processing unit is connecting encoder;
B) encoder, described encoder input are connecting oscillator and aforementioned first central processing unit, and the output of described encoder is connecting second amplifier, and the output of described second amplifier is connected in bus.
C) decoder, described decoder input is connected with bus and oscillator;
D) second central processing unit, the input of described second central processing unit is connected with decoder output, oscillator, loCal number setting device, described loCal number setting device is to be connected respectively between the input and ground wire of described second central processing unit by 8 jumper switchs, and between the described second central processing unit input and ground wire, being connected 8 pull-up resistors respectively, the output of described second central processing unit is connecting audio amplifier circuit;
The power input of above-mentioned sound circuit, encoder, decoder, central processing unit is respectively connecting power supply.
Be connected normally-closed contact between the preferred above-mentioned elevator intercom, described decoder, second central processing unit and power supply by offhooking relay control.
Be connected normally opened contact between the preferred above-mentioned elevator intercom, described sound circuit, encoder and power supply by offhooking relay control.
Preferred above-mentioned elevator intercom, described second central processing unit is the AT89C2051 single-chip microcomputer.
Preferred above-mentioned elevator intercom, described second amplifier and amplifier become one.
First kind of intercom that the utility model provides, by a coding is set on each extension set, it is loCal number, each extension set is selected the extension set of desire conversation by dialing keyboard, thereby realize selecting extension function, simultaneously in communication process, both call sides can be dialed the third party of desire conversation again, the 4th, carry out MPTY, and realize the called extension of one touch dialing by setting first coding (loCal number) with second coding (called-number) for second kind of one touch dialing intercom, then be as good as when being called out with other extension set, for convenient the use assignment key only is set as lift car, pass through program setting, this single assignment key can be realized three kinds of Dialing Methods, 1. the flicking assignment key is less than the called extension of then dialing setting in 2 seconds automatically, 2. longly calls out signaling transfer point and can prevent that ring unanswered's situation from occurring greater than then dialing the extension number (user makes by oneself or night shift room) of 3. dialing program setting when the extension set ring unanswered that dials automatically automatically by another extension (night shift room) of program setting in 2 seconds automatically by assignment key.
Description of drawings
Fig. 1 is the flow diagram of first inventive embodiments;
Fig. 2 is the circuit diagram of first inventive embodiments;
Fig. 3 is the flow diagram of second inventive embodiments;
Fig. 4 is the circuit diagram of second inventive embodiments.
Embodiment
With reference to figure 1, Fig. 2, first inventive embodiments is a kind of elevator intercom, this intercom is the improvement of carrying out on the basis of existing MPTY intercom, adopt DTMF (Dual Tone MultiFrenquence) double-tone to keep pouring in defeated coded system, be that each extension set no longer is that an existing key is called out, but a dialing keyboard is arranged, described dialing keyboard has 12 dial keies 1,2,3,4,5,6,7,8,9, A, B, C, can set (12*12) 144 part machines altogether with two item sign indicating numbers like this.This intercom comprises microphone, receiver, voice pre-amplification circuit, audio frequency amplifier, encoder, central processing unit, decoder, power supply, bus, wherein:
Described microphone, receiver are the same with the microphone and the receiver of existing telephone set, are connected by quad between this microphone receiver and the sound circuit, and referring to the connector J1 of Fig. 2, wherein the port 3,4 of connector J1 is answered a loud speaker, port one, 2 tube of answering.
Described voice amplifying circuit is known in existing speakerphone, here a work is simple describes: the voice signal that comes out from microphone carries out the one-level amplification through the port 2 arrival triode Q1 of connector J1, after the output wherein one road signal directly send into the in-phase input end IN2+ of audio-frequency power amplifier U1, and another road is delivered to triode Q2 and is carried out secondary and amplify, and secondary amplifies output signal through capacitor C 5, resistance R 11, resistance R 12, the in-phase input end IN1+ that is input to audio-frequency power amplifier U1 after the resistance R 13 from the audio signal on the bus LN through resistance R 14, send into the in-phase input end IN1+ of audio-frequency power amplifier U1 after the capacitor C 6 in the lump.
Described audio-frequency power amplifier is a concentrated amplifier U1, should concentrate amplifier U1 to have two and amplify input IN1+ and IN2+, above-mentioned one-level is amplified the DTMF double-audio signal of the microphone audio signal of output or the output of dialling after the input IN2+ input of concentrating amplifier U1, outputs to bus LN from output OUT2 after amplifying.And another road secondary amplifies after the audio signal of the microphone audio signal of output and bus sampling sends into the input IN1+ input of concentrating amplifier U1 in the lump, outputs on the earpiece speaker of 3,4 mouthfuls of connections of connector J1 from output OUT1 after amplifying.
Described encoder is DTMF double audio coding integrated circuit U2 (model is a 9102D system example), integrated circuit U 2 inputs 8 of described coding, 9 are connecting oscillator, integrated circuit U 2 inputs 5 of described coding are connecting electrify restoration circuit, integrated circuit U 2 inputs 10 of encoding connect power supply, integrated circuit U 2 inputs 1 of encoding, 2,3,4 with input 15,16, be connected in series 12 dial keies (4*3=12) between 17, dial key is numbered with 16 systems, be followed successively by 1,2,3,4,5,6,7,8,9, A, B, C, 12 keys of such 2 above-mentioned 16 systems can be dialed 144 part machines (12*12=144) altogether, 2 pairs of extensions of being dialed of the integrated circuit U of encoding convert to and output to aforesaid concentrated amplifier U1 from output 12 behind the DTMF sign indicating number and amplify, and the IN2+ port of this concentrated amplifier U1 receives and amplifies behind this dtmf signal and output to bus LN from port OUT2.
Described decoder is DTMF double-tone decoder U3 (model be in MT8870,9270,9170,9370 series a kind of) frequently, DTMF double-tone decoder U3 input 18 frequently is connected with power supply, input 7,8 is connected with oscillator, input 2 is connected with bus, resistance R 30, R31 are the enlargement ratio adjustment, and output 11,12,13,14,15 is connected with central processing unit.
Described central processing unit is single-chip microcomputer U4 (model is AT89C2051), the input 20 of single-chip microcomputer U4 is connected with power supply, input 4,5 are connected with oscillator, input 1 is connecting electrify restoration circuit, input 3,6,7,8,9 respectively with aforementioned decoder output 11,12,13,14,15 connect, single-chip microcomputer U4 input 12 to input 19 totally 8 ports be connected (with reference to figure 2 right side central) respectively with loCal number setting device SW1, this loCal number setting device SW1 is connected respectively between the input and ground wire of described single-chip microcomputer U4 by 8 jumper switchs, and between described single-chip microcomputer U4 input and jumper switch, be connected 8 pull-up resistors respectively, the output 11 of described single-chip microcomputer U4 is the tinkle of bells music delivery outlets, be connected to the tinkle of bells audio amplifier circuit after the output, described the tinkle of bells audio amplifier circuit output connects receiver, with the shared loud speaker of call voice circuit, establish a connector J2 between described single-chip microcomputer U4 input 2 and the ground wire, described connector J2 is used to select single-chip microcomputer U4 to export the music of audio amplifier circuit to.
In the foregoing description, 1 is bus LN among the connector J3,2 is the negative terminal GND of power supply, 3 is power positive end VCC, 4 is anti-power supply anode+VA, the normally opened contact of power supply VCC by receiver off-hook switch control is to+VA power supply behind the described receiver off-book, every other standby extension set decoding circuit U3, single-chip microcomputer U4 gets the electric operating state that enters, and described extension set decoding circuit U3, be connected normally-closed contact between single-chip microcomputer U4 and the power supply+VA by the control of receiver off-hook switch, promptly when above-mentioned microphone (receiver) when taking up, decoding circuit U3, the working power of single-chip microcomputer U4 is cut off, at this moment, this intercom is no longer accepted the DTMF double-audio signal from bus, and promptly when intercom was answered, other intercom can not be dialed the phone of answering again.Simultaneously, be connected normally opened contact between described coding circuit U2, sound circuit and the power supply+VA by the control of receiver off-hook switch, promptly when above-mentioned microphone (receiver) when taking up, coding circuit U2, sound circuit working power are connected, dial-up circuit, sound circuit begin to enter operating state, when after dialing one of them extension set, desiring to dial other extension set again, only need directly to dial this extension under the machine state and can realize MPTY carrying.
With reference to figure 3, Fig. 4, second inventive embodiments and the first inventive embodiments difference are coding circuit part and power control part branch, power supply control changes by offhooking relay JA, JB substitutes, the power supply control principle as hereinbefore, this phone is mainly used in lift car or other needs the occasion of one touch dialing, with reference to figure 4, single-chip microcomputer U2 is communicated with power supply always, promptly be in awaiting digit state all the time, the input 11 of single-chip microcomputer U2 to input 19 connects the called extension setting device of one touch dialing SW2, single-chip microcomputer U2 input 4,5 connection oscillator, the output 2 of single-chip microcomputer U2,3,6 with the serial input terminal 1 of dtmf code device U6,5,6 connect, single-chip microcomputer U2 output 2 is connected with phonological component by diode D2, can play quiet effect during dialing and reduce interference, the input 9 of described single-chip microcomputer U2 is connected connector pin 3 with the pin 4 of connector J4,4 connect a button, pin 1,2 connect a button indicator light.The input 8 of described single-chip microcomputer U2 and another single-chip microcomputer U4 output 11 are connected by optocoupler U8, the input 7 of single-chip microcomputer U2 connects the output of another light lotus root U7, light lotus root input is connected with power supply+VA, when extension set that car call extension SW2 sets, single-chip microcomputer U2 output 11 is a low level, relay J A, the JB adhesive, anti-power supply line+VA gets, every other standby extension set decoding circuit U3, single-chip microcomputer U4 gets the electric operating state that enters, when time-delay is not after a while replied, single-chip microcomputer U2 output 11 is a high level, relay J A, JB disconnects, and described machine is just no longer to+VA power supply, single-chip microcomputer U2 detects the level of input port 7 then, detect as then represent the phone ring unanswered for high level this moment, and U2 is forwarded to another extension set automatically by source program, (can realize repeatedly transferring automatically by program).Carried machine+VA as called phone and then powered by called phone is counter, the level that this moment, U2 detected input port 7 is that low level represents that then the existing people of phone answers, and switching then is terminated automatically.
Described dtmf code device U6 (model is 9200 series) serial input terminal 1,5,6 is connected with the output 2,3,6 of single-chip microcomputer U2, this dtmf code device input 8 also is connected with power supply, the output 7 of dtmf code device is connected with concentrated amplifier input terminal IN2, and the dtmf signal of concentrating amplifier U1 that U6 is come amplifies the back and outputs to bus LN from port OUT2.
The intercom that the utility model provides, by this machine coding is set on extension set, select the extension set of desire conversation by dialing, encoder converts this extension to the DTMF sign indicating number and sends to bus, after receiving this DTMF sign indicating number, each extension set decoder on the bus sends to central processing unit at twice, the number that number that described central processing unit is set this machine and decoder send over compares, when the number that receives when central processing unit is consistent with the number of setting, central processing unit output the tinkle of bells music is to audio amplifier circuit, and final loud speaker to receiver, when phone is mentioned by the side of answering, the extension set decoder at this place, side of answering, the power supply of central processing unit is cut off, promptly no longer accept calling to this machine, and sound circuit, coding circuit enters operating state, promptly enter normal speech phase, when the needs MPTY, the side of answering or calling party can be dialed the third party of desire conversation, the four directions, carry out MPTY, thereby realize the MPTY function, and all phone power line+VA are by control of receiver off-hook switch or power supply relay control, (any phone is off-hook not) circuit is not powered during standby, can effectively avoid interference and cause disorderly dialing phenomenon, when having a power failure, save the backup battery electric energy, prolong the air time.
Claims (10)
1, a kind of elevator intercom, comprise microphone, receiver, the described microphone of connection and receiver sound circuit, be connected amplifier that the sound circuit output is used to amplify voice signal, connect the bus that described amplifier out is used for transmitting audio signal, it is characterized in that also comprising:
A) encoder, described encoder input is connecting dialing keyboard and oscillator, and the output of described encoder is connecting second amplifier, and the output of described second amplifier is connected in bus;
B) decoder, described decoder input is connected with bus and oscillator;
C) central processing unit, the input of described central processing unit is connected with the decoder output, described central processing unit input is also connecting loCal number setting device and oscillator, described loCal number setting device is to be connected respectively between the input and ground wire of described central processing unit by 8 jumper switchs, and between described central processing unit input and jumper switch, be connected 8 pull-up resistors respectively, the output of described central processing unit is connecting audio amplifier circuit, and described audio amplifier circuit output is connecting loud speaker;
The power input of above-mentioned sound circuit, encoder, decoder, central processing unit is respectively connecting power supply.
2, elevator intercom as claimed in claim 1 is characterized in that being connected between described decoder, central processing unit and the power supply normally-closed contact by the control of receiver off-hook switch.
3, elevator intercom according to claim 1 is characterized in that being connected between described sound circuit, encoder and the power supply normally opened contact by the control of microphone off-hook switch.
4, elevator intercom as claimed in claim 1 is characterized in that described central processing unit is the AT89C2051 single-chip microcomputer.
5, elevator intercom as claimed in claim 1 is characterized in that described second amplifier and amplifier become one.
6, a kind of elevator intercom, comprise microphone, receiver, the described microphone of connection and receiver sound circuit, be connected amplifier that described sound circuit output is used to amplify voice signal, connect the bus that described amplifier out is used for transmitting audio signal, it is characterized in that also comprising:
A) first central processing unit, the described first central processing unit input is connecting callee's number setting device, oscillator and call button, described callee's number setting device is to be connected respectively between the input and ground wire of described first central processing unit by 8 jumper switchs, and between the described first central processing unit input and jumper switch, be connected 8 pull-up resistors respectively, the described first central processing unit output is connecting relay, and the output of described first central processing unit is connecting encoder;
B) encoder, described encoder input are connecting oscillator and aforementioned first central processing unit, and the output of described encoder is connecting second amplifier, and the output of described second amplifier is connected in bus.
C) decoder, described decoder input is connected with bus and oscillator;
D) second central processing unit, the input of described second central processing unit is connected with decoder output, oscillator, loCal number setting device, described loCal number setting device is to be connected respectively between the input and ground wire of described second central processing unit by 8 jumper switchs, and between the described second central processing unit input and ground wire, being connected 8 pull-up resistors respectively, the output of described second central processing unit is connecting audio amplifier circuit;
The power input of above-mentioned sound circuit, encoder, decoder, central processing unit is respectively connecting power supply.
7, elevator intercom as claimed in claim 6 is characterized in that being connected between described decoder, second central processing unit and the power supply normally-closed contact by offhooking relay control.
8, elevator intercom as claimed in claim 6 is characterized in that being connected between described sound circuit, encoder and the power supply normally opened contact by offhooking relay control.
9, elevator intercom as claimed in claim 6 is characterized in that described second central processing unit is the AT89C2051 single-chip microcomputer.
10, elevator intercom as claimed in claim 1 is characterized in that described second amplifier and amplifier become one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520074831 CN2824452Y (en) | 2005-08-19 | 2005-08-19 | Elevator interphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520074831 CN2824452Y (en) | 2005-08-19 | 2005-08-19 | Elevator interphone |
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| Publication Number | Publication Date |
|---|---|
| CN2824452Y true CN2824452Y (en) | 2006-10-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520074831 Expired - Fee Related CN2824452Y (en) | 2005-08-19 | 2005-08-19 | Elevator interphone |
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| Country | Link |
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| CN (1) | CN2824452Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107465963A (en) * | 2017-08-17 | 2017-12-12 | 江苏威尔曼科技有限公司 | A kind of elevator emergency intercom system |
| CN109775500A (en) * | 2019-03-14 | 2019-05-21 | 北京科苑隆科技有限公司 | A kind of five side's phone system of elevator |
-
2005
- 2005-08-19 CN CN 200520074831 patent/CN2824452Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107465963A (en) * | 2017-08-17 | 2017-12-12 | 江苏威尔曼科技有限公司 | A kind of elevator emergency intercom system |
| CN109775500A (en) * | 2019-03-14 | 2019-05-21 | 北京科苑隆科技有限公司 | A kind of five side's phone system of elevator |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061004 Termination date: 20090921 |