CN1331537A - Built-in single-key telephone set - Google Patents

Abstract

A built-in single-key telephone suitable for the cage of elevator, etc. features that pressing an only key on the panel of the said telephone can select internal interphone or external telephone network. It is using procedure, necessary speech prompt can be provided. The calling key in working state can be lighted to show a meaningful pattern.

Description

Built-in single-key telephone set

The present invention is a kind of singly-bound telephone device of special purpose, is mainly used in the emergent alarm and the communication of elevator etc.

That the communication modes of existing elevator is generally is inner wired (general four lines or more than four lines) intercom (overwhelming majority can only be used for the communication with elevator(lift) machine room) and external telephone set dual mode, the former has limited to usage space because of the difficulty of wiring and compatibility, moreover nearly all elevator(lift) machine room is unattended duty all, therefore when elevator is in an emergency (as oppressive), but can not realize with extraneous effective communication in the lift car; And the latter's form or be a plug-in wall mounting telephone (regular meeting loses and damages) on control handwheel; being the push-button telephone of an embedding---its common defective is abused easily, but (in case abuse) also just limited its important emergency communication function when dialing scope when having limited.Simultaneously, external phone will certainly influence the outward appearance and the layout of control panel, therefore can not satisfy social needs.

This device is and addresses the above problem and design, its feature is that user interface is divided into two parts, both related management personnel and passenger (caller): it is presented in passenger (caller) the just button that can be lighted (" urgent call " key that uses existing elevator all to have, the outward appearance that needn't change control handwheel) and relevant indication voice in front; Remainder then is installed on control handwheel inside.This device is set external dial-up program (when entering the phone network pattern by relevant administrative staff before use, it only calls out the number of setting in advance), number information writes the unlikely power down of EEPROM and loses, but number storing quantity is (button character of every bytes store is decided on EEPROM space size) greatly.

Function:

1. use inner intercommunication to call out. press main button (＂ urgent call ＂ key on the control handwheel first the caller, see accompanying drawing 5) time, inner microcontroller is connected the calling contact of inner intercommunication earlier and exported voice: ＂ connects machine room for you now, take over please button ＂ (perhaps similarly content) once more in 20 seconds of reason personnel, this function is usually used in the maintenance/debugging of equipment.If this moment, there was people's post at inner intercommunication machine tool place, INCOM intercom can carry out, and the caller will can not use external telephone network;

2. uninterrupted urgent call.If this moment inner intercommunication ring unanswered, the caller pressed main button at 20 seconds in (this time can be adjusted as required) once more, this equipment will be exported voice and " connect administrative staff " (or similarly content) and enter the phone network dialing mode: after detecting telephone exchange's dialing tone, transfer to the communication telephones number (also can be wireless mobile telephone set and beeper etc.) of first call accepted of setting by administrative staff in the EEPROM, dialing process will be subjected to the supervision of microcontroller, meet busy tone, ring-back is above 5 times, the ＂ of mobile phone can not connect ... calling obstacle situations such as ＂ information all can make it begin to dial the next communication number of storage ... this action will continue until call through (existing people answers) or (will have all communications of voice informing: ＂ all can't connect this moment, please try ＂ after a while again) till having dialled last communication number;

3. automatic picking off and hanging machine (can close by administrative staff from handoff functionality, the extension set situation be arranged) to adapt to.When phone is squeezed into, internal processes will be controlled automatic off-hook, export the voice informing passenger simultaneously.Whether this function can make management/maintenance personal not learnt rapidly by distance limit ground and be stranded in the fault elevator passenger and situation thereof, to take corresponding measure and to pacify stranded passenger etc.This machine adopts conversation to prescribe a time limit simultaneously and meets busy tone/howler tone automatic hand-up mode;

Compare with existing like product, advantage of the present invention is as follows:

Effective communication solution at the oppressive accident of elevator;

The automatic conversion of inner intercommunication and external communication not only can be saved unnecessary communication fee but also can guarantee that call coverage is not subjected to the limitation of interphone;

Guarantee the reliability of urgent call, the communication number that deposits among its EEPROM is many more, and the exhalation when urgent is just secure more, and subsequenct call automatically;

Do not destroy the overall appearance of lift car---luxurious elevator is shown important especially:

Except that call button and loudspeaker wiring, need not change the intercom of having installed, and easy and simple to handle, be difficult for losing and damaging.

Below by embodiment and with reference to accompanying drawing the present invention is described in detail.In the accompanying drawings:

Fig. 1 is a structure block diagram of the present invention

Fig. 2 is the electrical schematic diagram of embodiment of the invention main control part;

Fig. 3 carries out the electrical schematic diagram of call function part for the embodiment of the invention;

Fig. 4 is a main program flow chart;

Fig. 5 is lift car control handwheel (part) and individual palpation key user interface schematic diagram of the present invention.

As shown in Figure 1, the present invention is by comprising microcontroller 5, eeprom memory 6, output drives 7, voice unit 8, signal tone detecting unit 9, ringing-current detects 10 main control parts of forming 1 (for simplicity, its contained power unit, indication link and input details etc. are omitted), by dial-up circuit 11, speech path network 12, outer line interface 13, MIC14, and the call function part 2 of amplifier and loud speaker 15 compositions, drop into and normally use the unique visible call button 3 of back user, keyboard with key supporting and functional switch part 4 and the changeover contact and other relay and contact 16 formations thereof that are used to start interphone.

The detailed picture of Fig. 2 and Fig. 3 the used element of present embodiment and being electrically connected, because of its master control function and call function are born respectively by two wiring boards, so Fig. 2, Fig. 3 have also described the connection details between them.This equipment needs by administrative staff the communication number initialization among its EEPROM: press write switch (WE) after energized before dropping into formal the use.At this moment, single chip microcomputer IC1 will enter the number of writing program, keyboard scan B/T1 to B/T# and with the input key deposit serial EEPROM---IC2 successively in; The implication that the ENTER key is pressed is the blank character of two communications.When the input of whole numbers finishes, the importer resets the WE switch, and the final sign of number will write thereupon, with the final end position of indication number.

When normal the use, main program will detect number write switch WE, assignment key MAIN B/T (see figure 2) and from the bell signal of the ternary input buffer input of IC5 successively by flow process shown in Figure 4.When detecting bell signal, to change the sub-journey of RING over to: select by the ternary latch control IC of IC4 6 four-16 decoders and play to have deposited one of interior voice segments of IC9 (recording playback sound circuit automatically) in advance in by IC1, inform that the passenger in the car has the phone incoming call.Simultaneously by port P2.2 through IC10 drive that relay R Y1 gives connection to external call and by port P2.0 open 555 timer IC3 (this was made as 3 minutes), then open the interruption that offers 555 circuit, begin to have judged whether that by special signal tone detection circuit (IC11) busy tone/howler tone occurs.The on-hook action will be triggered by the interrupt requests (time-delay finishes) of busy tone/howler tone or 555, thereby finishes once to answer process and return main program.

Detect the assignment key action when for the first time: connect the RY2 (see figure 2) contact that is equal to the intercom unit call button is connected, light light-emitting component MAINBLT, the beginning internal delay time 20 seconds in the assignment key and export one section voice, inform that the caller is connecting internal communication, desire is connected then button once more in 20 seconds of administrative staff.Under no interference situation, this state will make intercom be called out for 10 seconds continuously, then 10 seconds of wait acknowledge.

If in 20 seconds, assignment key MANIB/T presses once more, and internal processes will turn-off RY2, and adhesive RY1 gives connection to external call, and is getting in touch with administrative staff with the voice informing caller, begins simultaneously to detect the signal tone that IC11 returns via IC5.After being determined, dialing tone both transferred to first to set number, then the detection of call process can not be connected then and can change next number over to, and this action will continue, termination flag byte in reading EEPROM (can export voice this moment: all communications all fail to connect, and please try after a while again).Can not connect the detection of situation, comprise the line-busy tone signal, wireless telephonicly can not connect situations such as information and ring-back be overtime.In case call through---existing people answers, and just begins to prepare for shutdown: open 555 and interrupt, the CI pin by IC11 resets it, and beginning detects busy/howler tone repeatedly, and the situation of its shutdown process when answering is similar.

The voice of this machine are selected by 4-16 line decoder (IC6), broadcast U3 (seeing also Fig. 2, Fig. 3) by ISD1420 through analog switch CD4066, speech network U2, speaker amplifier.Dial feature is by IC4, through IC6, IC7/IC8 driving optical coupling bidirectional triode thyristor MOC3021 realization, and the processor of this machine also can adopt special-purpose phone microcontroller, as the PCD33XXA Series of MCU of PHILIPS company.It can make circuit simplify (because of the channel problem, present embodiment does not adopt).Light-emitting diode WDT is the running state of programs indicator light; Buzzer BZ is that the keyboard input is established.Relay R Y3 is that pulse dialing is established; Ringing-current detects to be made up of links such as rectification, step-down, filtering, photoelectricity isolation; Outside line call function part also includes links such as balancing network, automatic gain control, quiet, noise level monitoring; The power supply of present embodiment adopts list+5V power supply, and its details is pleonasm no longer.Power source design can have multiple, directly powers (being particularly useful for the low-power dissipation system that the telephone for special use controller constitutes) as adopting standby battery and telephone wire.

Claims (2)

1. the built-in telephone device of individual palpation key that is used for places such as lift car, it is characterized in that the user interface to caller (user) is button (to show hiding pattern) and the corresponding voice indication that an energy is lighted, the caller only needs just can finish the selection and use overall process of intercom unit and external electric phone network by operating this button.And its external communication mode strictly observes administrative staff's setting program in advance.

2. have with the described feature class of claim 1 seemingly, and its circuit diagram telephone device different with the embodiment of the invention.

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