CN2182263Y - Safety electronic signaling machine for mine use - Google Patents
Safety electronic signaling machine for mine use Download PDFInfo
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- CN2182263Y CN2182263Y CN 91228232 CN91228232U CN2182263Y CN 2182263 Y CN2182263 Y CN 2182263Y CN 91228232 CN91228232 CN 91228232 CN 91228232 U CN91228232 U CN 91228232U CN 2182263 Y CN2182263 Y CN 2182263Y
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Abstract
The utility model relates to an intrinsically safe duplex type electronic signaling machine. The utility model is characterized in that a miner lamp is used as a power supply, an electric voltage trigger type diversion closure device is used for voice amplification, and an electric current trigger type diversion closure device is used for audio ringing current dotting; the utility model applies the piezoelectric effect and the piezoelectric inverse effect of a piezoelectric device and the alternation effect of a transformer. The signal sending adopts an active operating network, and the signal reception adopts a passive operating network. The utility model adopts a connection mode which is connected in series in a signal loop, and a low circuit cost can meet the requirements of dotting and conversation in a transportation system. The utility model is not limited by the condition of a power supply network, achieves the purposes of improving the electrical safety index coefficient of inflammable and explosive working environment, and replaces all explosion suppression type power frequency signal devices.
Description
The present invention is for adapting to inflammable and explosive working environment under the mine, overcome crowded, press, bump, hit abominable natural conditions, the mine lamp of using is a power supply, use non-electrical quantity measurement technology and semi-conductor electronic device, and constitute a kind ofly have conversation, get ready and the duplexing formula electronic annunciator of mining intrinsic safety type (abbreviation intrinsic safety type) of three kinds of functions of light demonstration.
Along with the domestic and imported performing comprehensive coal mining, improving constantly of the comprehensive tunneler tool level of production will progressively be eliminated the old-fashioned digging production technology of a big gun three sound in the coal in China industrial production.Occurred 150 meters-300 meters large span coal-faces in succession, the production and transport system of 500 meters-2000 meters long trends has satisfied the needs of domestic extensive modern production.But with supporting flame-proof type 36 couchers of above-mentioned production and transport device systems signal device frequently because big former of line drop so be eliminated.For satisfying the need of work of production and transport system, only in every cover signal system, set up the power supply unit of nearly ten thousand yuan of funds at present, use the flame-proof type power frequency component device of 127 volts of electric pressures, form the relay-type signal system and keep production status.Because 127 couchers signal system circuit frequently are long, the electric pressure height, be subjected to power supply network limitation factor many, the performance of device is single, add that down-hole, mine natural conditions are abominable, the machine line cost that makes signal system is up to 8-10 unit/more than the rice, electrical equipment in the use lose quick-fried rate and not serviceability rate up to the total electric equipment of mine lose quick-fried rate and not serviceability rate 70%, and the rate to be repaiied after the signal device damage accounts in 50% of the rate of deleting, and make signal system often be subjected to the limitation of power supply network and in paralyzed state, can't guarantee the multi-functional of signal system and produce in multiduty needs.Though there had been a spot of audio frequency multifunctional signal product to occur in the last few years both at home and abroad, but it is all more with " KBH " series of products, ubiquity the big heaviness of product body, circuit theory is loaded down with trivial details, receiving and transmitting signal is active job network, use inconvenient maintenance, power consumption is big, inefficiency, shortcomings such as fault rate height, antidetonation, humidity resistance difference are unfavorable for the normal progress of mine downhole production technology.
For the foregoing reasons, the objective of the invention is: solve the limitation that transport signal system is subjected to supply network, overcome the unicity of all flame-proof type power frequency component device functions, overcome the passivity at relay-type signal networking, improve the communication quality and the effective working distance of signal system, improve the security appliance index coefficient at underground signal networking, mine, reduce machine line cost, reduce the consumption of the energy and fund, reach the target that replaces flame-proof type power frequency component device with the intrinsic safety type signal device.
According to mining intrinsic safety type duplex formula electronic annunciator of the present invention, it is characterized in that: it is by triode T
1, T
2And biasing resistor R
2Deng composition; with non-intrinsic safety type mine lamp is power supply; with audio frequency step-up transformer (B) is that the electric source interception formula protection link of inductive load is main circuit (an abbreviation intrinsically safe circuit); the circuit structure of the voltage triggered formula electric source interception protection link that the piezo-electric effect of applying piezoelectric ceramic device constitutes is finished this machine function of giving orders or instructions, and uses to flow through resistance R
3On electric current the time constitute current trigger formula electric source interception protection link the circuit structure ringing-current of finishing this machine get function ready; the piezoelectric inverse effect of applying piezoelectric ceramic device and harmonics characteristic are paid limit winding centre cap with audio frequency step-up transformer (B) and are constituted sound equipment reduction and the isolated DC noise that circuit structure in parallel is finished the passive collection of letters of this machine; the function that the filtering high-frequency harmonic disturbs, application LED element is connected in parallel on the circuit structure at winding 1,2 two ends, the former limit of audio frequency step-up transformer (B) and finishes the collection of letters of this machine, the demonstration of the light when posting a letter and triode T
2The afterflow defencive function, and this machine of application is series at the line circuit structure at signal networking, making this machine and signal networking is the resistive high impedance feature that presents transmission, forms a cable broadcasting signal networking with multiple function.
Be further characterized in that triode T
1, T
2And biasing resistor R
2This machine main circuit of forming, application safety grid WD
1-WD
4And current-limiting resistance R
1Overvoltage, the overcurrent protection link formed make the inductive load in the main circuit be the feature of pure resistive load to mains side, and every technical indicator meets the intrinsic safety standard-required.The functional character of giving orders or instructions of this machine is by triode T
1, T
2And R
2The talked power of voice signal of the variation that this machine main circuit of forming is subjected to button NA1,2,3 the piezo-electric effect of control applying piezoelectric ceramic device of " disjunction ", " closure " state to constitute the amount of damming of the electric source interception protection link of pressing trigger-type at input is controlled; make B on the winding of former limit, obtain the speech voltage of 2-3 volt with the alternation effect of inductive load; after boosting, B on pair limit winding, obtains 45 volts of speech voltages, by safety barrier WD
5-WD
8Overvoltage protection after output 35-40 volt, 24 milliamperes voice signal is finished.Triode T
1, T
2And biasing resistor R
2This machine main circuit of forming is subjected to button NA1,3,4 " disjunction ", the control of " closure " state at input, uses and flows through resistance R
3On the magnitude of current variation of the amount of damming that constitutes the electric source interception protection link of current trigger formula be subjected to R
3The control of the magnitude of current on the resistance forms the self-oscillation link, makes B obtain the tone ringing current voltage that 2-3 lies prostrate with the alternation effect of inductive load on the winding of former limit, obtains 45 volts of tone ringing current voltages on pair limit winding after B boosts, by safety barrier WD
5-WD
8Overvoltage protection after output 35-40 volt, 14 milliamperes tone ringing current signal finish.The piezoelectric inverse effect of applying piezoelectric ceramic device is subjected to words, is subjected to the bell audio device as this machine, uses audio device and is connected to circuit structure that B pays limit winding central point and is driven by the other side's machine output signal and finish.Use winding circuit structure in parallel in the former limit of B in the strong red light emitting diodes LED of daily output and this machine main circuit, the lightshow function of application LED and the nonlinear characteristic of element are finished.This machine is series at the signal networking, makes this networking present high impedance characteristic, guaranteed to leak between the signal network circuit resistance and be not less than 2K Ω, loop resistance can be not more than the performance of 5K Ω.The electric source interception amount that the input application controls button NA1 of this machine main circuit, 2,3,4 NA1,2,3 electric source interception protection links that constitute the voltage triggered formula of NA1 control are main circuit changes with the audio signal of transmitter finishes the course of work of giving orders or instructions, and the electric source interception protection link that application controls button NA1,3,4 constitute the current trigger formula of NA2 control is that the electric source interception amount of main circuit is with resistance R
3Electric fine gold quantitative change formation audio frequency self oscillatory system finish and send out a bell course of work.The audio frequency variation characteristic that this machine is sent out the signal of bell is to use negative feedback resistor R in the main circuit
3The adjusting relation of component value and frequency of oscillation and direct ratio.The power supply connecting device of this machine is to use the current-collecting device of the charging coupling arrangement of KTSC-102 type lamp-charging rack for this machine, current-collecting device during charging on the KS-7KS-8 type mine lamp head is the power transmitting device to this machine, the regulation requirement that makes the power supply of this machine protective case outside continue and meet non-intrinsic safety standard.
Formation of the present invention and characteristics are described in detail as follows conjunction with figs. one by one:
Fig. 1 is circuit theory diagrams of the present invention.
Fig. 2 connects mine lamp power current-collecting device figure for protective case of the present invention is outside.
Fig. 3 is a NA control button schematic diagram of the present invention.
When making extension set for the present invention, Fig. 4 connects signal networking schematic diagram.
1, main circuit of the present invention is for externally using non-intrinsic safety type mine lamp to be power supply, and don't destroys inner intrinsic safety performance, reach give orders or instructions, ringing-current is got ready and sending and receiving signal Presentation Function service. As shown in accompanying drawing 1,2,3 figure, after the current-collecting device that protective case loam cake outer left side of the present invention is installed is being connected non-intrinsic safety type mine lamp power, by WD1－WD
4The double-layer double-direction zena's safety barrier (abbreviation guard grating) that forms is done the energy storage discharge overvoltage protection of non-intrinsic safety type mine lamp power side and internal main circuit sound intermediate frequency step-up transformer (being called for short B) former limit winding electric sensibility reciprocal. The light display that is made of sending and receiving letter of the present invention LED is shown and T2The afterflow protection of inductive load is by triode T1、T
2Biasing resistor R2And current-limiting resistance R1, shunt capacitance C1, coupling capacitance C2The current cutting off protection link and the main circuit of the present invention that form B consisted of the comprehensive protector of non-intrinsic safety type mine lamp power, reached the present invention have give orders or instructions, main circuit function that ringing-current is got ready to be shown with sending and receiving letter light display. Satisfied in " GB3836.4-83 " 5.2 regulation requirement.
The piezo-electric effect of applying piezoelectric ceramic device consisted of transmitter (being called for short S) when 2, the present invention gave orders or instructions, and made triode T in the main circuit1、T
2、R
2Consist of voltage triggered formula cut-off equipment. Make B produce the variation of audio voltage value with the alternation effect of perceptual device own with the S piezo-electric effect, the audio voltage signal that produces 2 volts-3 volts at winding 1,2 two ends, the former limit of B is finished the course of work of giving orders or instructions after B boosts.
Use negative feedback resistor R when 3, bell of the present invention is got ready3With triode T1、T
2And R2Consist of current trigger formula cut-off equipment, make B pass through R with the alternation effect that perceptual device own has3Control T1、T
2Simultaneously cut-off is at R3On current vanishes after make T1、T
2Again simultaneously conducting forms and R3The be directly proportional tone ringing current oscillation element of frequency change relation of device parameter values produces 2 volts-3 volts tone ringing current voltage signal and finishes after B boosts and send out a bell course of work at winding 1,2 two ends, the former limit of B.
4, related link of the present invention is for guaranteeing that whole signal system is the intrinsic safety characteristic, collects mail to passive job network performance service. When giving orders or instructions and send out bell, by WD5－WD
6The guard grating that forms is made the energy storage discharge of B and the overvoltage protection link of signal network. The receiver (being called for short L) that is consisted of by the piezoelectric inverse effect of piezoelectric ceramic devices. The sound equipment monitoring that application is attempted by circuit structure that B pays limit 1/2 winding when finishing this machine and posting a letter. The function of the passive sound reduction the during collection of letters. And the low frequency d-c noise in the harmonics characteristic Isolation input signal of application L device, the interference of filtering high-frequency harmonic, make this link circuit guarantee high output, input impedance performance, reached in " GB3836.4-83 " 6.6,2.10, appendix is the regulation requirement of bar B.4.
Effect that the present invention presents and advantage are that to use non-intrinsic safety type mine lamp be that power supply has overcome the limitation that flame-proof type power frequency transport signal system is subjected to power supply network, make each signal system can save nearly ten thousand yuan power supply unit cost fund, and have when using easy to operate, reliable and secure advantage of time spent not.
The function of the job network of posting a letter provided by the invention is to have overcome the unicity that a machine one line in the prior art has only a kind of function, has improved effective working distance and communication quality.Overcome the passivity of relay-type signal working method, and had power consumption few, the characteristics of high efficiency.
The collection of letters provided by the invention and light show that the function of job network is to guarantee that the transmission characteristic of output, input and signal line is the performance characteristics of intrinsic safety type, it has eliminated the quick-fried rate of mistake of signal-powered equipment and device, improved mine safety index coefficient, make the 8-10 unit/rice of the machine line cost at signal networking by former flame-proof type, reduced to 3-5 unit/rice, and to collect mail and light is shown as the performance of passive job network, presented that to have fault rate low, characteristics that antidetonation and humidity resistance are high and be the advantages such as good reliability of production system service.
Institute's embodiment of the present invention and component parameters and manufacture craft, finish under with explosion-proof electric equipment one essential safe type circuit and the preceding topic of electric fixtures " i " (being called for short the intrinsic safety rules) carrying out " GB3836.4-83 " explosive atmosphere, existing as follows in conjunction with the optimum implementation of reproduction shown in accompanying drawing 1-4 of the present invention and the subordinate list 1,2:
1, when operating personnel prepares to get ready and gives orders or instructions, on carry-on the negative pole conductive pole that is inserted in this machine outer casing upper cover left side current-collecting device with holder of miner's lampe, the dextrorotation turnback makes lamp holder positive source and current-collecting device bottom conductive reed connect (the lamp holder negative pole is connected simultaneously with cathode power supply).4.5 volts of power supplys of the direct current of mineral light are through current-limiting resistance R
1, WD
1-WD
44 volts of-6 volts of overvoltage forming are added in T every the former limit winding of height protection safety barrier and B
2E, C the two poles of the earth, the power supply of having finished when posting a letter is supplied with program.Because NA1,2,3,4 disjunction controls make T in the main circuit
1Open base, triode T
1With T
2All be in by duty.Operating current is 10 microamperes in the main circuit at this moment, and mine lamp power power output P=A*V=10 microampere * 4.5 volts=45 microwatts makes main circuit meet 1.4 rules and regulations provisioning requests in " GB3836.1-83 ".
2, when operating personnel need give orders or instructions to press NA1, shown in accompanying drawing 1,3 and subordinate list 1, the NA1 of main circuit, 2,3 while closures make triode T
1, T
2Be subjected to R
2Control and conducting constitutes the dress that dams of mine lamp power through the former limit of B winding, make the DC current of 300 milliamperes of mine lamp power supplies.Because the piezo-electric effect of transmitter S makes speech sound wave Control of Voltage T
1Bias voltage under the base stage and make T
1, T
2Be operated in the cut-off region, the electric current that flows through the former limit of B winding changes in 30 milliamperes-290 milliamperes scope.And be the alternation effect of inductive element by the former limit of B element around fine horse, make 1,2 two ends of the former limit of B winding obtain 2-3 volt audio voltage signal, finish the signal strength signal intensity light of giving orders or instructions through the LED element and show and T
2Afterflow protection after, and boost to make through B and pay a limit winding and obtain 45 volts of audio voltages.Pass through WD
1-WD
4And WD
5-WD
8Energy storage former to the B element, that pay limit winding electric sensibility reciprocal that two groups of safety barriers forming are finished is discharged behind the overvoltage protection; finish the monitoring of local terminal speech sound equipment by the receiver (being called for short L) that piezoelectric ceramic devices piezoelectric inverse effect constitutes; audio-signal-driven the other side L device by 24 milliamperes of 5,8 two outer line ends output 35-40 volts is finished the course of work of giving orders or instructions, and makes that this link circuit structure meets in " GB3836.4-83 " 2.10,6.6, appendix regulation requirement B.4.In the function of main circuit side of the present invention owing to the overvoltage and the afterflow protection of WD1-WD4 safety barrier and LED element; make it be pure resistive load feature to the mine lamp power side; it is shown in Figure 1 to look into " GB3836.4-83 " standard appendix A .3; get after 2 times safety factor calculates in conjunction with subordinate list 1 shown parameter of the present invention, checking meets the intrinsic safety requirement.
3, when needing ringing-current to get ready, operating personnel press NA
2, shown in accompanying drawing 1,3 and subordinate list 1, NA1,3,4 while closures make T in the main circuit
1, T
2Be subjected to R
2Control and conducting simultaneously constitutes the cut-off equipment of mine lamp power through the former limit of B winding.Because R
3The control of Current Negative Three-Point Capacitance effect makes T
1, T
2Turn-off simultaneously, after the current vanishes in the winding of the former limit of B, T
1, T
2Conducting simultaneously again forms and R
3The be directly proportional audio oscillation link of frequency change relation of component value.Make B obtain 2-3 volt tone ringing current signal at 1,2 two ends of former limit winding with the alternation effect of inductive element own, the LED element on the winding of the former limit of B is finished the light of sending out the bell number of times and is shown and T
2After the afterflow of the element protection, and boost to make through B and pay a limit and obtain 45 volts tone ringing current voltage.Pass through ED
1-WD
4And WD
5-WD
8After two groups of safety barriers forming are finished energy storage discharge overvoltage protection to B element inductance value.Finish the sound equipment of local terminal tone ringing current by L and monitor, by 5,8 two outer line ends output 35-40 volts.14 milliamperes of ringing signals drive the other side L and finish and send out a bell course of work, make this link circuit structure meet in " GB3836.4-83 " 2.10,6.6, appendix regulation requirement B.4.In main circuit side of the present invention because WD
1-WD
4The overvoltage of safety barrier and LED element and afterflow defencive function make it be the resistive load feature to the mine lamp power side.It is shown in Figure 1 to look into " GB3836.4-83 " standard appendix A .3, in conjunction with the parameter shown in the subordinate list 1 of the present invention, gets 2 times of safety factor and calculates, and checking meets the intrinsic safety requirement.
4, the present invention serves the signal networking by connecting shown in the accompanying drawing 4 when doing collection of letters work as extension set, because T
1, T
2, R
2, R
3And the main circuit that S constitutes is not worked, can not need add mine lamp power, the collection of letters link of this machine is passive job network, speech of being brought in by outside line and ringing-current sending dotter signal are paid 3,4,5 of limit windings through the B device and are constituted the loop, finish filtering extraneous signal medium and low frequency d-c noise and high-frequency harmonic interference by the harmonics characteristic of L device, by WD
5-WD
8The safety barrier of forming is finished the overvoltage protection of collecting mail number.The passive sound equipment that makes L finish collection of letters work with the function of the piezoelectric inverse effect of device itself reduces, and makes the B device finish the coupling of signal with the function that oppositely is input as step-down.Demonstrate the intensity of collection of letters voice signal with the function of light and number of times that ringing signal is got ready is finished the collection of letters course of work by the LED device.Make this link circuit structure meet " GB3936.4-83 " and in 2.10,6.6, appendix regulation requirement B.4.
5, the present invention serves the signal networking by connecting shown in the accompanying drawing 4 when posting a letter work as extension set.By WD
5-WD
8After the safety barrier of forming is finished the B element and paid limit winding electric sensibility reciprocal energy storage discharge overvoltage protection, make local terminal be resistive load.In conjunction with parameter shown in the subordinate list 1 of the present invention, 5,8 two ends output conversation and ringing-current sending dotter signal voltage when outside line is opened a way, electric current is 40 volts to the maximum, 24 milliamperes parameter, it is shown in Figure 1 to look into " GB3836.4-83 " middle appendix A .3, and power taking is pressed 50 volts, and the minimum ignition current value is 200 milliamperes, get the twice safety factor and calculate, verify output signal of the present invention, current value requirement up to specification.The present invention connects 10 extension sets by being connected in shown in the accompanying drawing 4 in the 5000m length communication distance, for leaking resistance, 5K Ω is 2K Ω at the circuit loop resistance, distributed electrical capacity is 0.047 microfarad/km between the circuit line, when circuit distributed inductance amount is 0.8 milihenry/km, and total capacity in the loop then:
C is total=C line * 5=0.047 microfarad/km * 5=0.235 microfarad
XC＝ ＝308Ω
Total inductance amount: L is total=0.8 milihenry/km * 5=4 milihenry
XL＝W.L＝55Ω
And according to the present invention solstics voltage in the signal circuit, current value is 40 volts, the parameter value of 2MA, it is shown in Figure 3 to look into " GB3836.4-83 " middle appendix A .3, when capacitance is 0.3 microfarad, minimum keep-alive voltage is 100 volts, gets 2 times of safety factor and calculates, and verifies transmission signal parameters requirement up to specification in solstics in the signal circuit of the present invention.It is shown in Figure 5 to look into " GB3836.4-83 " middle appendix A .3, and when inductance value was 4 milihenries, minimum ignition current was 150 milliamperes, gets 2 times of safety factor and calculates, and verifies that the solstics transmission signal parameters meets the requirement of intrinsic safety rules regulation in the signal circuit of the present invention.
Subordinate list 1:
1. rated voltage: direct current: 4.5 ± 20% volts
2. rated current: 300 milliamperes of 150 milliamperes of conversations of ring
3. output signal: frequency: the ring 2100HZ 300-3400HZ that converses
2, transmission technology index of the present invention:
1. electroacoustic index: (when circuit loop resistance 0 Europe, surveying)
Ring: 35 volts of 16 milliamperes of 2100HZ
Conversation: 30 volts of 25 milliamperes of 300-3400HZ
2. electroacoustic index: (in 5 kilo-ohms of surveys of circuit loop resistance)
Ring: 40 volts of 2 milliamperes of 2100HZ
Conversation: 35 volts of 2 milliamperes of 300-3400HZ
3. ring and conversation the time all do not have singing phenomenon.
3, the technology of the present invention function:
1. do the signal and the conversation of transportation system in the inflammable and explosive environment.
2. can use leaking resistance is more than 2 kilo-ohms, and the various circuits of loop resistance below 10 kilo-ohms can be made main frame and also can use as secondary machine in signal system.
3. should with mining KS-7.KS-8 type mine lamp cooperating, can not be subjected to the limitation of power supply network.
4. this machine is posted a letter and is active work, collects mail to be passive work.
4, environment for use condition of the present invention:
1. environment temperature :-20-+40 degree.
2. relative humidity: 90 ± 5%.
3. height above sea level: be not more than 2500 meters.
Subordinate list 2: each device parameter values of the present invention.
R
1Resistance R J-2W-5 Ω
R
2Resistance R J-0.25W-200K Ω
R
3Resistance R J-0.25W-50K Ω
C
1Capacitor CD
11-25V-220 microfarad
C
2Capacitor CD
11-25V/1 microfarad
WD
1-WD4: voltage-stabiliser tube 2CW135
WD
5-WD
8: voltage-stabiliser tube 2DW51J
S piezoelectric ceramic devices FT-41-2.2AT
L piezoelectric ceramic devices FT-41-2.2AT
LED: produce strong red light emitting diodes daily
The NA:50 volt, 2 peaces, two standards, 4 builtup film shapes (self-control)
B, audio frequency step-up transformer: select 1J850 class iron-nickel alloy material.
E
710-2000, former limit, is paid the limit and is used φ 0.2mm enamel-covered wire around 500 circles, 1 of 1/2 place tap around 40 circles with φ 0.2mm enamel-covered wire.
T
1：S9015／S9014 T
2：BD135／BD136
Claims (10)
1, a kind of mining intrinsic safety type duplex formula electronic annunciator, it is characterized in that: it is by triode T
1, T
2And biasing resistor R
2Deng composition; with non-intrinsic safety type mine lamp is power supply; with audio frequency step-up transformer (B) is that the electric source interception formula protection link of inductive load is main circuit (an abbreviation intrinsically safe circuit); the circuit structure of the voltage triggered formula electric source interception protection link that the piezo-electric effect of applying piezoelectric ceramic device constitutes is finished this machine function of giving orders or instructions, and uses to flow through resistance R
3On electric current the time constitute current trigger formula electric source interception protection link the circuit structure ringing-current of finishing this machine get function ready; the piezoelectric inverse effect of applying piezoelectric ceramic device and harmonics characteristic are paid limit winding centre cap with audio frequency step-up transformer (B) and are constituted sound equipment reduction and the isolated DC noise that circuit structure in parallel is finished the passive collection of letters of this machine; the function that the filtering high-frequency harmonic disturbs, application LED element is connected in parallel on the circuit structure at winding 1,2 two ends, the former limit of audio frequency step-up transformer (B) and finishes the collection of letters of this machine, the demonstration of the light when posting a letter and triode T
2The afterflow defencive function, and this machine of application is series at the line circuit structure at signal networking, making this machine and signal networking is the resistive high impedance feature that presents transmission, forms a cable broadcasting signal networking with multiple function.
2, according to the mining intrinsic safety type duplex formula electronic annunciator of claim 1, it is characterized in that by triode T
1, T
2And biasing resistor R
2This machine main circuit of forming, application safety grid WD
1-WD
4And current-limiting resistance R
1Overvoltage, the overcurrent protection link formed make the inductive load in the main circuit be the feature of pure resistive load to mains side, and every technical indicator meets the intrinsic safety standard-required.
3, according to the mining intrinsic safety type duplex formula electronic annunciator of claim 1, be characterised in that by triode T
1, T
2And R
2The talked power of voice signal of the variation that this machine main circuit of forming is subjected to button NA1,2,3 the piezo-electric effect of control applying piezoelectric ceramic device of " disjunction ", " closure " state to constitute the amount of damming of the electric source interception protection link of pressing trigger-type at input is controlled; make B on the winding of former limit, obtain the speech voltage of 2-3 volt with the alternation effect of inductive load; after boosting, B on pair limit winding, obtains 45 volts of speech voltages, by safety barrier WD
5-WD
8Overvoltage protection after output 35-40 volt, 24 milliamperes voice signal is finished.
4, according to the mining intrinsic safety type duplex formula electronic annunciator of claim 1, it is characterized in that by triode T
1, T
2And biasing resistor R
2This machine main circuit of forming is subjected to button NA1,3,4 " disjunction ", the control of " closure " state at input, uses and flows through resistance R
3On the magnitude of current variation of the amount of damming that constitutes the electric source interception protection link of current trigger formula be subjected to R
3The control of the magnitude of current on the resistance forms the self-oscillation link, makes B obtain the tone ringing current voltage that 2-3 lies prostrate with the alternation effect of inductive load on the winding of former limit, obtains 45 volts of tone ringing current voltages on pair limit winding after B boosts, by safety barrier WD
5-WD
8Overvoltage protection after output 35-40 volt, 14 milliamperes tone ringing current signal finish.
5, according to the duplexing formula electronic annunciator of the mining intrinsic safety type of claim 1, it is characterized in that: the piezoelectric inverse effect of applying piezoelectric ceramic device is subjected to words, is subjected to the bell audio device as this machine, uses audio device and is connected to circuit structure that B pays limit winding central point and is driven by the other side's machine output signal and finish.
6, according to the duplexing formula electronic annunciator of the mining intrinsic safety type of claim 1, it is characterized in that using winding circuit structure in parallel in the former limit of B in daily output strong red light emitting diodes LED and this machine main circuit, the lightshow function of application LED and the nonlinear characteristic of element are finished.
7, according to the duplexing formula electronic annunciator of the mining intrinsic safety type of claim 1, it is characterized in that the machine series electrical in the signal networking, make this networking present high impedance characteristic, guaranteed to leak between the signal network circuit resistance and be not less than 2K Ω, loop resistance can be not more than the performance of 5K Ω.
8, according to the duplexing formula electronic annunciator of the mining intrinsic safety type of claim 1; it is characterized in that electric source interception protection link that the input application controls button NA1 of this machine main circuit, 2,3,4 NA1,2, constitute the voltage triggered formulas of NA1 control is that the electric source interception amount of main circuit changes with the audio signal of transmitter and finishes the course of work of giving orders or instructions at 3, the electric source interception protection link that application controls button NA1,2,3,4 constitute the current trigger formula of NA2 control is that the electric source interception amount of main circuit is with resistance R
3Electric fine gold quantitative change formation audio frequency self oscillatory system finish and send out a bell course of work.
9, according to the mining intrinsic safety type duplex formula electronic annunciator of claim 1, it is characterized in that using negative feedback resistor R in the main circuit
3The adjusting relation of component value and frequency of oscillation and direct ratio.
10, according to the duplexing formula electronic annunciator of the mining intrinsic safety type of claim 1., the power supply connecting device that it is characterized in that this machine is to use the current-collecting device of the charging coupling arrangement of KTSC-102 type lamp-charging rack for this machine, current-collecting device during charging on the KS-7KS-8 type mine lamp head is the power transmitting device to this machine, the regulation requirement that makes the power supply of this machine protective case outside continue and meet non-intrinsic safety standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91228232 CN2182263Y (en) | 1991-11-06 | 1991-11-06 | Safety electronic signaling machine for mine use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91228232 CN2182263Y (en) | 1991-11-06 | 1991-11-06 | Safety electronic signaling machine for mine use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2182263Y true CN2182263Y (en) | 1994-11-09 |
Family
ID=33760605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91228232 Expired - Fee Related CN2182263Y (en) | 1991-11-06 | 1991-11-06 | Safety electronic signaling machine for mine use |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2182263Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009636A (en) * | 2014-06-06 | 2014-08-27 | 河南恒安通信设备有限责任公司 | Novel circuit board for mine guard grating |
-
1991
- 1991-11-06 CN CN 91228232 patent/CN2182263Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009636A (en) * | 2014-06-06 | 2014-08-27 | 河南恒安通信设备有限责任公司 | Novel circuit board for mine guard grating |
| CN104009636B (en) * | 2014-06-06 | 2016-08-24 | 河南恒安通信设备有限责任公司 | A kind of wiring board of new type mining guard grating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |