CN2123149U - Code selective dual-functional speech-amplifying telephone for use in mines - Google Patents

Abstract

The utility model relates to a code selective dual-functional speech-amplifying telephone for use in mines, which is suitable for use in the downhole of the mines which have coal dust and the danger of gas explosion. The utility model can be respectively communicated with a coding transmitter through a selection button, a bus reception coding button and an alarm coding button, a local decoding receiver which is corresponding to the utility model through signal audio transmission lines, a bus decoding receiver and an alarm decoding receiver to receive code impulse signals. Then, the utility model can create calling signals and alarm signals through a single-double tone oscillator and a local amplifier. Both parties can talk through a transmission amplifier.

Description

Code selective dual-functional speech-amplifying telephone for use in mines

The utility model relates to the two merit hands free telephones of a kind of mining coding selecting type, is applicable to the communication of the dangerous mine of coal dust and gas explosion down-hole.

The WL-20 hands free telephone that Siemens is produced in the prior art, though amplify give great volume, noise resisting ability is strong, circuit is simple, can only carry out the conversation that amplifies of single merit, non-selectivity, cost height.The patent No. of domestic applications is 88215134.7 " the two merit telecommunications machines of Flameproof and intrinsically safe ", the only two merits of the head and the tail conversation that amplifies of this communication machine, noise resisting ability is strong, but power supply need be set in addition, and a system can only converse from beginning to end, and a first machine only can connect four tail machines, four tail machines will be heard first machine sound simultaneously, have only first machine can with the intercommunication of arbitrary tail machine, the tail machine is non-selectivity then, and it is more to be coupled to each other heart yearn between the communication machine.

The purpose of this utility model just provides a kind of two merit hands free telephones of mining coding selecting type that coding is selected, bus amplifies conversation, self-organizing system that have.

The purpose of this utility model can realize in the following manner: it is made of coded transmitter, this machine translation sign indicating number receiver, bus decoding receiver, the decoding receiver of reporting to the police, single double tone oscillator, local amplifier, transmit amplifier.

(1) this machine translation sign indicating number receiver (IC wherein ₂) input 9 and coded transmitter (IC ₁) output 15 links to each other, output 11 is through resistance (R ₁₀) to single double tone oscillator (IC ₅) input 2, through single double tone oscillator (IC ₅) output 3 and resistance (R ₁₇), electric capacity (C ₁₁) to local amplifier (IC ₆) input 3, local amplifier (IC ₆) output 5 and capacitor C ₁₃To loud speaker Y;

(2) wherein bus is deciphered receiver (IC ₃) input 9 and coded transmitter (IC ₁) output 15 links to each other, output 11 is through resistance (R ₁₁), diode (LED takes place ₁) and the relay bus interface accept capable loop (J), to sending the acoustic transformer (L) that disappears;

(3) wherein receiver (IC is deciphered in warning ₄) input 9 and coded transmitter (IC ₁) output 15 links to each other, output 11 is through resistance (R ₁₂) the one road to single double tone oscillator (IC ₅) input 5, again through single double tone oscillator (IC ₅) output 3, resistance (R ₇), capacitor C ₁₁To local amplifier (IC ₆) on the input 3, through local amplifier (IC ₆) output 5 is to electric capacity (C ₁₃) to loud speaker Y, another road is through resistance (R ₁₂) to the light-emitting diode (LED that reports to the police ₂);

(4) every telephone set is all by being enclosed in 12 volts of essential safe type phone power supplys forming together by epoxide-resin glue by freedom from repairs battery and current-limiting resistance;

(5) all adopt signal audio transmission line and shared negative wire between all telephone sets, promptly two heart yearns connect.

Description of drawings

Fig. 1 is the utility model circuit block diagram

Fig. 2 is the utility model circuit theory diagrams

Below in conjunction with accompanying drawing the utility model is described in further detail:

At first with BEST freedom from repairs battery E and current-limiting resistance R ₁Be enclosed in together with epoxide-resin glue, form the working power of 12 volts of intrinsically safe power supplies as this hands free telephone.C ₁Be filter capacitor.

S ₁～S ₅Be coding selector button (can expand) according to the telephone stations number, S _ZBe the coding button that bus receives, S _JIt is the alarm code button.

IC ₁Be coded transmitter, R ₂, R ₃, C ₂Be coded transmitter IC ₁Timing resistor and electric capacity.

IC ₂Be this machine translation sign indicating number receiver, its address code input is provided with R in advance ₄, C ₃Be frequency-selecting resistance, electric capacity, R ₅, C ₄Be timing resistor, electric capacity, R ₁₀Be IC ₂The current-limiting resistance of output 11.

IC ₃Be bus decoding receiver, its address code input 1,5 is provided with in advance, R ₆, C ₅, R ₇, C ₆Effect and this machine translation sign indicating number receiver IC ₂In identical, R ₁₁Be IC ₃The current-limiting resistance of output 11.

IC ₄Be the decoding receiver of reporting to the police, its address input end 1,2,3 is provided with in advance, R ₈, C ₇, R ₉, C ₈With this machine translation sign indicating number receiver IC ₂In identical, R ₁₂Be IC ₄The current-limiting resistance of output 11.

IC ₅Be single double tone oscillator, wherein input 2 is the single-tone input, and input 5 is the double-tone input, and output is 3, R ₁₇Be IC ₅Current-limiting resistance, C ₁₁Be coupling capacitance.

IC ₆Be local amplifier, C ₁₂Be shunt capacitance, input 3, output 5, C ₁₃Be coupling capacitance, Y is a loud speaker.

IC ₇Be transmit amplifier, C ₁₄Be shunt capacitance, input 3, output 5, C ₁₆Be coupling capacitance, L is for sending the acoustic transformer that disappears, R ₁₉Be network equalize resistance, S is a transmitter, K _1-1Be transmitter speech input switch, K _1-2For circuit is connected switch, C ₁₅Be speech coupling capacitance, R ₁₈Be divider resistance.

LED ₂Be warning light-emitting diode, R ₁₃Be current-limiting resistance.

LED ₁Be bus interface transmitting-receiving optical diode, R ₁₄Be biasing resistor.BG ₁, J forms the relay bus interface and accepts capable loop.J _1-1For closed circuit is provided with.

IC wherein ₁The 1-5 pin is the address code input, and it can weave into 3 ⁵=243 pulse codes, and generation is the pulse train that width differs.Simultaneously, with coded system this machine, bus, warning are received and number in order.

All adopt two heart yearns to connect between all telephone sets, Line 1 is the signal audio transmission line, and No. 2 lines are shared negative wire.

Course of action:

(1) coding is selected the process of transmitting of circuit:

Press coding selector button S ₁, connect coded transmitter IC ₁, make IC ₁The about 10 volts of coded pulses of output 15 output output in the circuit through No. 1 signal audio transmission line, make have only with corresponding that hands free telephone of this coded pulse in this machine translation sign indicating number receiver IC ₂By input 9 received signals (every IC ₂Address code all numbers in order in advance and is provided with in advance), make IC ₂Output 11 is a high level, through current-limiting resistance R ₁₀To single double tone oscillator IC ₅Input 2, IC ₅Produce the 800Hz tone signal, through IC ₅Output 3 and current-limiting resistance R ₇, coupling capacitance C ₁₁To local amplifier IC ₆Input 3 is again through IC ₆Output 5 and coupling capacitance C ₁₃To loud speaker Y, as call signal.

The called subscriber can press transmitter speech input switch K _1-1, to connect and send the words loop, speech is through transmitter S, K switch _1-1And capacitor C ₁₅To transmit amplifier IC ₇Input 3 is again from IC ₇Output 5 is to capacitor C ₁₆Be coupled to the acoustic transformer L that disappears, via line is connected K switch _1-2Output to the signal audio transmission line No. 1, then both sides' intercommunication mutually.

(2) the bus decoding acceptor circuit course of work:

Turn-on bus received code button S _Z, positive electricity is by diode D ₄, D ₅To coded transmitter IC ₁Input 1,5, output signal is through diode D ₇Connect IC ₁, IC ₁Output 15 output encoder pulses are deciphered receiver IC through No. 1 signal audio transmission line to bus ₃Input 9, IC ₃Output 11, current-limiting resistance R ₁₁, LED ₁Make the relay bus interface accept the conducting of capable loop, relay tip J _1-1Closure, connection signal audio transmission line 1 is coupled to voice signal and sends on the acoustic transformer L that disappears, and can converse completely, and the phone of conversing interrupts, and will accept unified command.

(3) warning decoding receiver operation process:

Connect alarm code button S _j, positive electricity is by diode D ₁, D ₂, D ₃To coded transmitter IC ₁Coding input 1,2,3 is leaded up to diode D ₆Connect coded transmitter IC ₁, coded pulse is through IC ₁Output 15 exports in the signal audio transmission line 1, and decoding receiver IC reports to the police ₄In advance with the address code setting of each online phone, IC ₄Received signal is after resistance R ₁₂To single double tone oscillator IC ₅Input 5 is again through IC ₅Output 3, resistance R ₁₇, capacitor C ₁₁Be coupled to local amplifier IC ₆On the input 3, through IC ₆Output 5 is to capacitor C ₁₃To loud speaker Y, send chimes of doom completely, even the phone of conversing also can be heard chimes of doom simultaneously; Another road is through current-limiting resistance R ₁₂, make the warning LED ₂Show.

Distinguishing feature of the present utility model is that it does not utilize switch but self-organizing system, can directly connect between the telephone set, can connect at most 70, every phone has independently intrinsically safe power supply, utilize coding circuit to give every in order number of being numbered with of phone, can converse by codes selection between platform and the platform; Every all is provided with bus receiver, can converse simultaneously with all online hands free telephones for every; Every all is provided with alarm receiver, and the emergency alarm situation is the same alarm of phone completely. Because circuit adopts coding, decoder ic, peripheral cell is few, and selection speed is fast, and the connecting conducting wire of platform and platform phone only has two cores. Cost is low, easy to maintenance, is applicable in the environment that coal dust and gas explosion danger are arranged under the coal mine to work.

Claims (1)

1, the two merit hands free telephones of a kind of mining coding selecting type is characterized in that it is made of coded transmitter, this machine translation sign indicating number receiver, bus decoding receiver, the decoding receiver of reporting to the police, single double tone oscillator, local amplifier, transmit amplifier:

(1) this machine translation sign indicating number receiver (IC wherein ₂) input 9 and coded transmitter (IC ₁) output 15 links to each other, output 11 is through resistance (R ₁₀) to single double tone oscillator (IC ₅) input 2, through single double tone oscillator (IC ₅) output 3 and resistance (R ₁₇), electric capacity (C ₁₁) to local amplifier (IC ₆) input 3, local amplifier (IC ₆) output 5 and capacitor C ₁₃To loud speaker Y;

(2) wherein bus is deciphered receiver (IC ₃) input 9 and coded transmitter (IC ₁) output 15 links to each other, output 11 is through resistance (R ₁₁), diode (LED takes place ₁) and the relay bus interface accept capable loop (J), to sending the acoustic transformer (L) that disappears;

(3) wherein receiver (IC is deciphered in warning ₄) input 9 and coded transmitter (IC ₁) output 15 links to each other, output 11 is through resistance (R ₁₂) the one road to single double tone oscillator (IC ₅) input 5, again through single double tone oscillator (IC ₅) output 3, resistance (R ₇), capacitor C ₁₁To local amplifier (IC ₆) on the input 3, through local amplifier (IC ₆) output 5 is to electric capacity (C ₁₃) to loud speaker Y, another road is through resistance (R ₁₂) to the light-emitting diode (LED that reports to the police ₂);

(4) every telephone set is all by being enclosed in 12 volts of essential safe type phone power supplys forming together by epoxide-resin glue by freedom from repairs battery and current-limiting resistance;

(5) all adopt signal audio transmission line and shared negative wire between all telephone sets, promptly two heart yearns connect.

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