CN103812164A - Hierarchical starting mining intrinsic safety power supply - Google Patents
Hierarchical starting mining intrinsic safety power supply Download PDFInfo
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- CN103812164A CN103812164A CN201310693630.7A CN201310693630A CN103812164A CN 103812164 A CN103812164 A CN 103812164A CN 201310693630 A CN201310693630 A CN 201310693630A CN 103812164 A CN103812164 A CN 103812164A
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Abstract
The invention provides a hierarchical starting mining intrinsic safety power supply which at least comprises a DC/DC (direct-current) power supply unit, a safety grid circuit, a storage battery, a power supply control circuit, a storage battery power supply control circuit, a voltage comparison unit and a control unit. The DC/DC power supply unit is used for receiving direct current and boosting or reducing voltage of the direct current, the voltage comparison unit is used for acquiring the voltage of the storage battery and comparing the voltage with set reference voltage, the DC/DC power supply unit is electrically connected with the safety grid circuit through the power supply control circuit, the storage battery is electrically connected with the safety grid circuit through the storage battery power supply control circuit, an input end of the voltage comparison unit is electrically connected with the storage battery, an output end of the voltage comparison unit is electrically connected with the DC/DC power supply unit, the DC/DC power supply unit supplies power for the control unit, the control unit outputs control signals to the power supply control circuit and the storage battery power supply control circuit and is further electrically connected with a positive electrode of the storage battery. The hierarchical starting mining intrinsic safety power supply can avoid false triggering caused by high current in starting of the intrinsic safety power supply, and stable and persistent operation of the intrinsic safety power supply can be guaranteed, so that the on-load capacity of the intrinsic safety power supply is enhanced.
Description
Technical field
The present invention relates to a kind of intrinsic safety electric source, relate in particular to a kind of stepped starting type mine intrinsic safety electric source.
Background technology
Intrinsic safety electric source is essential safety source, and this power supply is under normal work and malfunction, and ceiling voltage, the maximum current of its output all have intrinsic safety performance.Intrinsic safety electric source uses very extensive in mine, the standby time of current mine intrinsic safety electric source requires as being not less than 2 hours, but, along with applying of urgent danger prevention system under mine, require the standby time of the intrinsic safety electric source of urgent danger prevention system to be not less than 96 hours, but the standby time of intrinsic safety electric source of the prior art far can not reach the requirement for subsequent use of 96 hours, is unfavorable for the stable operation of urgent danger prevention system in mine, easily causes potential safety hazard; And, intrinsic safety electric source of the prior art often adopts the mode of direct startup in the time starting, immediate current when startup is large, impact to input intrinsic safety electric source is large, cause intrinsic safety electric source lasting stability to move, thereby make the carrying load ability of intrinsic safety electric source poor, stable operation that can not proof load equipment.
Therefore, need to propose a kind of novel mine intrinsic safety electric source, can effectively increase on the one hand the standby time of intrinsic safety electric source, guarantee that mine comprises that urgent danger prevention system is in interior intrinsic safety equipment stable operation; On the other hand, can effectively avoid intrinsic safety electric source start formula large electric current to input intrinsic safety electric source impact, strengthen the carrying load ability of intrinsic safety electric source.
Summary of the invention
In view of this, the object of this invention is to provide a kind of stepped starting type mine intrinsic safety electric source, can effectively increase on the one hand the standby time of intrinsic safety electric source, guarantee that mine comprises that urgent danger prevention system is in interior intrinsic safety equipment stable operation; On the other hand, the impact of large electric current to intrinsic safety electric source can effectively avoid intrinsic safety electric source to start time, the carrying load ability of enhancing intrinsic safety electric source.
Stepped starting type mine intrinsic safety electric source provided by the invention, at least comprise receive direct current and direct current is boosted or the DC/DC power subsystem of step-down processing, safety barrier circuit, batteries, Power supply control circuit, storage battery power supply control circuit, for obtaining the voltage of batteries and comparing voltage comparison unit and the control unit of computing with the reference voltage arranging;
Described DC/DC power subsystem is electrically connected with described safety barrier circuit by Power supply control circuit; Described batteries is electrically connected with described safety barrier circuit by storage battery power supply control circuit; Described voltage comparison unit input is electrically connected with batteries, output is electrically connected with DC/DC power subsystem, described control unit is powered by DC/DC power subsystem and to Power supply control circuit and storage battery power supply control circuit output control signal, described control unit is also electrically connected with the positive pole of described batteries.
Further, described voltage comparison unit is also provided with the comparison reference voltage initialization circuit for reducing the comparison reference voltage value in voltage comparison unit, described comparison reference voltage initialization circuit input is electrically connected with control unit, and output is electrically connected with the input of voltage comparison unit.
Further; the input of described DC/DC power module is provided with starting resistor initialization circuit and starting protection circuit; the input termination DC power supply of described starting protection circuit; the output of starting protection circuit is set end with the voltage of starting resistor initialization circuit and DC/DC power module and is electrically connected, and described starting resistor initialization circuit is electrically connected with the input of DC/DC power module.
Further, the input of described voltage comparison unit is provided with current amplification circuit, and described current amplification circuit is used for obtaining storage battery and flows through and amplify the output of backward voltage comparison unit.
Further, described Power supply control circuit comprises metal-oxide-semiconductor T1 (mos field effect transistor), metal-oxide-semiconductor T2, diode D6, triode Q3, triode Q4 and diode D5;
The source electrode of described metal-oxide-semiconductor T1 is electrically connected with DC/DC power subsystem output, the drain electrode of described metal-oxide-semiconductor T1 is electrically connected with the positive pole of diode D5, the negative pole of diode D5 is electrically connected with the positive pole of batteries, the grid of metal-oxide-semiconductor T1 is electrically connected with the collector electrode of triode Q3, the grounded emitter of triode Q3, the base stage of triode Q3 is electrically connected with control unit; The source electrode of metal-oxide-semiconductor T2 is electrically connected with the source electrode of metal-oxide-semiconductor T1, the drain electrode of metal-oxide-semiconductor T2 is electrically connected with the positive pole of diode D6, the negative pole of diode D6 is electrically connected with the input of safety barrier circuit, the grid of metal-oxide-semiconductor T2 is electrically connected with the collector electrode of triode Q4, the grounded emitter of triode Q4, the base stage of triode Q4 is electrically connected with the output of control unit.
Further, described storage battery power supply control circuit comprises metal-oxide-semiconductor T3, metal-oxide-semiconductor T4, triode Q5 and triode Q6;
The source electrode of described metal-oxide-semiconductor T3 is electrically connected with the positive pole of batteries, the drain electrode of metal-oxide-semiconductor T3 is electrically connected with the drain electrode of metal-oxide-semiconductor T4, the source electrode of metal-oxide-semiconductor T4 is electrically connected with the input of safety barrier circuit, the grid of described metal-oxide-semiconductor T3 is electrically connected with the collector electrode of triode Q5, the grid of metal-oxide-semiconductor T4 is electrically connected with the collector electrode of triode Q6, the base stage of described triode Q5 and triode Q6 is all electrically connected with control unit output, the grounded emitter of described triode Q5 and triode Q6.
Further, described voltage comparison unit comprises amplifier U1, the 4th resistance R 4, the 8th resistance R 8, the second resistance R the 2, the 13 resistance R 13, the first capacitor C 1, the 4th diode D4 and the 14 resistance R 14;
The in-phase end of described amplifier U1 is electrically connected with the output of current amplification circuit by the 4th resistance R 4, the end of oppisite phase of described amplifier U1 is connected with one end of the 8th resistance R 8, the other end of the 8th resistance R 8 is as reference voltage input, the output of described amplifier U1 is electrically connected with the positive pole of the 4th diode D4, and the negative pole of the 4th diode D4 is electrically connected with DC/DC power supply power supply by the 14 resistance R 14; The output of described amplifier U1 is electrically connected with end of oppisite phase after connecting by the first electric capacity and the 13 resistance R 13, and the end of oppisite phase of described amplifier U1 is also by the second resistance R 2 ground connection.
Further, described comparison reference voltage initialization circuit comprises the 3rd resistance R 3, the 7th resistance R 7, triode Q1 and triode Q2;
The base stage of described triode Q2 is electrically connected with the output of control unit, the collector electrode of triode Q2 is electrically connected with the end of oppisite phase of amplifier U1 by the 7th resistance R 7, the base stage of triode Q1 is electrically connected with the output of control unit, the collector electrode of triode Q1 is electrically connected with the end of oppisite phase of amplifier U1 by the 3rd resistance R 3, the grounded emitter of described triode Q1 and triode Q2.
Further; described starting resistor initialization circuit comprises the 5th resistance R 5, the 6th resistance R 6 and the 4th capacitor C 4; the power settings end of described DC/DC power subsystem is by the 4th capacitor C 4 ground connection; the power settings end of described DC/DC power subsystem is electrically connected with the output of starting protection circuit by the 5th resistance R 5, and the power settings end of described DC/DC power subsystem is by the 6th resistance R 6 ground connection.
Further, described starting protection circuit comprises the first diode D1, the second diode D2, the first resistance R 1, the 3rd diode D3 and the second capacitor C 2, and described the second electric capacity is electrochemical capacitor;
The positive pole of described the first diode D1 with as the input termination DC power supply of intrinsic safety electric source, the negative pole of the first diode D1 is electrically connected with the positive pole of the second capacitor C 2 by the first resistance R 1, the minus earth of the second electric capacity, the positive pole of the second capacitor C 2 is electrically connected with the positive pole of the 3rd diode D3, the negative pole of the 3rd diode D3 is electrically connected with the input of DC/DC power subsystem, the negative pole of the first diode D1 is also electrically connected with the positive pole of the second diode D2, and the negative pole of the second diode D2 is electrically connected with the input of DC/DC power subsystem.
Beneficial effect of the present invention:
Stepped starting type mine intrinsic safety electric source of the present invention, in the time starting, adopt little electric current operation, then increase operating current gradually until stable, realize the startup of different current stage, the impact that can avoid the starting current of intrinsic safety electric source to cause intrinsic safety electric source, the false triggering of the intrinsic safety electric source that the large electric current while avoiding intrinsic safety electric source to start causes, ensures that intrinsic safety electric source can move stably and lastingly, thereby strengthens the load capacity of input intrinsic safety electric source; On the other hand, in intrinsic safety electric source, increase reserve battery, can effectively increase the standby time of intrinsic safety electric source, guarantee that mine comprises that urgent danger prevention system is in interior intrinsic safety equipment stable operation.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is theory diagram of the present invention.
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
Fig. 1 is theory diagram of the present invention, Fig. 2 is circuit theory diagrams of the present invention, as shown in the figure, stepped starting type mine intrinsic safety electric source provided by the invention, at least comprise receive direct current (for the direct current of 24V) and direct current is boosted or the DC/DC power subsystem of step-down processing, safety barrier circuit, batteries BAT, Power supply control circuit, storage battery power supply control circuit, for obtaining the electric current of batteries BAT and comparing voltage comparison unit and the control unit of computing with the reference current arranging;
Described DC/DC power subsystem is electrically connected with described safety barrier circuit by Power supply control circuit; Described batteries is electrically connected with described safety barrier circuit by storage battery power supply control circuit; Described voltage comparison unit input is electrically connected with batteries, output is electrically connected with DC/DC power subsystem, described control unit is powered by DC/DC power subsystem and to Power supply control circuit and storage battery power supply control circuit output control signal, described control unit is also electrically connected with the positive pole of described batteries; Stepped starting type mine intrinsic safety electric source of the present invention, in the time starting, adopt little electric current operation, then increase operating current gradually until stable, realize the startup of different current stage, the impact that can avoid the starting current of intrinsic safety electric source to cause intrinsic safety electric source, the false triggering of the intrinsic safety electric source that the large electric current while avoiding intrinsic safety electric source to start causes, ensures that intrinsic safety electric source can move stably and lastingly, thereby strengthens the load capacity of input intrinsic safety electric source; On the other hand, in intrinsic safety electric source, increase reserve battery, can effectively increase the standby time of intrinsic safety electric source, guarantee that mine comprises that urgent danger prevention system is in interior intrinsic safety equipment stable operation.
In the present embodiment, described voltage comparison unit is also provided with the comparison reference voltage initialization circuit for reducing the comparison reference voltage value in voltage comparison unit, described comparison reference voltage initialization circuit input is electrically connected with control unit, output is electrically connected with the input of voltage comparison unit, by comparison reference voltage initialization circuit, can regulate the size of output current and the power of DC/DC power module, to extend the standby time of intrinsic safety electric source and to strengthen the load capacity of intrinsic safety electric source.
In the present embodiment; the input of described DC/DC power module is provided with starting resistor initialization circuit and starting protection circuit; the input termination DC power supply of described starting protection circuit; the output of starting protection circuit is set end with the voltage of starting resistor initialization circuit and DC/DC power module and is electrically connected, and described starting resistor initialization circuit is electrically connected with the input of DC/DC power module.
In the present embodiment, the input of described voltage comparison unit is provided with current amplification circuit, described current amplification circuit is used for obtaining storage battery and flows through and amplify the output of backward voltage comparison unit, described current amplification circuit comprises the 5th capacitor C 5, the 9th resistance R 9, amplifier U2, the tenth resistance R 10, the 11 resistance R 11, the end of oppisite phase of described amplifier U2 is by the tenth resistance R 10 ground connection, the in-phase end of amplifier U2 is connected with the negative electricity of batteries by the 11 resistance R 11, after described the 5th capacitor C 5 and the 9th resistance R 9 connection, be connected between the end of oppisite phase and output of described amplifier U2, the output of described amplifier U2 is as the output of current amplification circuit.
In the present embodiment, described Power supply control circuit comprises metal-oxide-semiconductor T1 (mos field effect transistor), metal-oxide-semiconductor T2, diode D6, triode Q3, triode Q4 and diode D5;
The source electrode of described metal-oxide-semiconductor T1 is electrically connected with DC/DC power subsystem output, the drain electrode of described metal-oxide-semiconductor T1 is electrically connected with the positive pole of diode D5, the negative pole of diode D5 is electrically connected with the positive pole of batteries, the grid of metal-oxide-semiconductor T1 is electrically connected with the collector electrode of triode Q3, the grounded emitter of triode Q3, the base stage of triode Q3 is electrically connected with control unit; The source electrode of metal-oxide-semiconductor T2 is electrically connected with the source electrode of metal-oxide-semiconductor T1, the drain electrode of metal-oxide-semiconductor T2 is electrically connected with the positive pole of diode D6, the negative pole of diode D6 is electrically connected with the input of safety barrier circuit, the grid of metal-oxide-semiconductor T2 is electrically connected with the collector electrode of triode Q4, the grounded emitter of triode Q4, the base stage of triode Q4 is electrically connected with the output of control unit.
In the present embodiment, described storage battery power supply control circuit comprises metal-oxide-semiconductor T3, metal-oxide-semiconductor T4, triode Q5 and triode Q6;
The source electrode of described metal-oxide-semiconductor T3 is electrically connected with the positive pole of batteries, the drain electrode of metal-oxide-semiconductor T3 is electrically connected with the drain electrode of metal-oxide-semiconductor T4, the source electrode of metal-oxide-semiconductor T4 is electrically connected with the input of safety barrier circuit, the grid of described metal-oxide-semiconductor T3 is electrically connected with the collector electrode of triode Q5, the grid of metal-oxide-semiconductor T4 is electrically connected with the collector electrode of triode Q6, the base stage of described triode Q5 and triode Q6 is all electrically connected with control unit output, the grounded emitter of described triode Q5 and triode Q6, described batteries is also by the 12 resistance R 12 ground connection.
In the present embodiment, described voltage comparison unit comprises amplifier U1, the 4th resistance R 4, the 8th resistance R 8, the second resistance R the 2, the 13 resistance R 13, the first capacitor C 1, the 4th diode D4 and the 14 resistance R 14;
The in-phase end of described amplifier U1 is electrically connected with the output of current amplification circuit by the 4th resistance R 4, by the effect of current amplification circuit and the 4th resistance R 4, the in-phase end of amplifier U1 is input as voltage proportional to charge in batteries electric current, the end of oppisite phase of described amplifier U1 is connected with one end of the 8th resistance R 8, the other end of the 8th resistance R 8 is as reference voltage input, reference voltage is 2.5V, and reference voltage is added to the end of oppisite phase of amplifier U1 after by the 8th resistance R 8, the output of described amplifier U1 is electrically connected with the positive pole of the 4th diode D4, the negative pole of the 4th diode D4 is electrically connected with DC/DC power supply power supply by the 14 resistance R 14, the output of described amplifier U1 is electrically connected with end of oppisite phase after connecting by the first electric capacity and the 13 resistance R 13, and the end of oppisite phase of described amplifier U1 is also by the second resistance R 2 ground connection.
In the present embodiment, described comparison reference voltage initialization circuit comprises the 3rd resistance R 3, the 7th resistance R 7, triode Q1 and triode Q2;
The base stage of described triode Q2 is electrically connected with the output of control unit, the collector electrode of triode Q2 is electrically connected with the end of oppisite phase of amplifier U1 by the 7th resistance R 7, the base stage of triode Q1 is electrically connected with the output of control unit, the collector electrode of triode Q1 is electrically connected with the end of oppisite phase of amplifier U1 by the 3rd resistance R 3, the grounded emitter of described triode Q1 and triode Q2.
In the present embodiment; described starting resistor initialization circuit comprises the 5th resistance R 5, the 6th resistance R 6 and the 4th capacitor C 4; the power settings end of described DC/DC power subsystem is by the 4th capacitor C 4 ground connection; the power settings end of described DC/DC power subsystem is electrically connected with the output of starting protection circuit by the 5th resistance R 5, and the power settings end of described DC/DC power subsystem is by the 6th resistance R 6 ground connection.
In the present embodiment, described starting protection circuit comprises the first diode D1, the second diode D2, the first resistance R 1, the 3rd diode D3 and the second capacitor C 2, and described the second electric capacity is electrochemical capacitor;
The positive pole of described the first diode D1 with as the input termination DC power supply of intrinsic safety electric source, the negative pole of the first diode D1 is electrically connected with the positive pole of the second capacitor C 2 by the first resistance R 1, the minus earth of the second electric capacity, the positive pole of the second capacitor C 2 is electrically connected with the positive pole of the 3rd diode D3, the negative pole of the 3rd diode D3 is electrically connected with the input of DC/DC power subsystem, the negative pole of the first diode D1 is also electrically connected with the positive pole of the second diode D2, the negative pole of the second diode D2 is electrically connected with the input of DC/DC power subsystem, by the first diode D1 and the second diode D2, can prevent the reverse current of the second capacitor C 2 and the 3rd capacitor C 3 and affect safety.
Operation principle of the present invention:
In voltage comparison unit, the inverting input of amplifier U1 is reference voltage, the in-phase end input voltage (charging current of this voltage and storage battery is proportional) of this reference voltage and amplifier U1 compares, when the in-phase end input voltage of amplifier U1 is higher than the reference voltage of the end of oppisite phase of amplifier U1, the output of amplifier U1 will be exported high level, this high level will feed back to DC/DC power supply control pin FB and make the output end voltage step-down of DC/DC power supply, and the output voltage of DC/DC power supply reduces and will cause the charging current of storage battery to reduce; And work as the in-phase end input voltage of amplifier U1 lower than the reference voltage of the end of oppisite phase of amplifier U1, the output of amplifier U1 is by output low level, this low level uprises the output end voltage of DC/DC power supply by feeding back to DC/DC power supply control pin FB, and the output voltage of DC/DC power supply raises the charging current that causes battery is increased.
In comparison reference voltage initialization circuit, when IC1, IC2 are high level, triode Q1 and all conductings of triode Q2, now the end of oppisite phase input voltage of amplifier U1 will become minimum value; And IC1 and IC2 are while being low level, triode Q1 and triode Q2 end, now the end of oppisite phase input voltage of amplifier U1 will become maximum, and IC1 is high level, IC2 while being low level, triode Q1 conducting, triode Q2 cut-off, now the end of oppisite phase input voltage of amplifier U1 will become the median of setting.Just can realize like this charging current value of control storage battery by setting the magnitude of voltage of end of oppisite phase input voltage of amplifier U1.
After the present invention powers on, first the second capacitor C 2 is charged, DC/DC power module delay start, can avoid voltage instability to impact DC/DC power module, when after voltage stabilization, input starting resistor by starting resistor initialization circuit by the Enable Pin Enable of DC/DC power module, that DC/DC power module starts, DC/DC power module stable output voltage, and power to the VDC end of control unit (control unit employing single-chip microcomputer of the present invention), control unit starts, and the IC1 of control unit, IC2 and CH terminal output high level, the end of oppisite phase voltage of amplifier U1 is minimum, and control unit terminal FD1, FD2 and DHC output low level, make metal-oxide-semiconductor T1, triode Q1 and triode Q2 conducting, and metal-oxide-semiconductor T3, metal-oxide-semiconductor T4 and metal-oxide-semiconductor T2 all end, now, amplifier U1 output high level also feeds back to and in DC/DC power module, makes DC/DC power module output LOW voltage, and accumulators charges with little electric current, and the power that makes safety barrier circuit output minimum (not output), in the 6th capacitor C 6, there is magnitude of voltage, the present invention completes startup,
When control unit IC1 terminal output level, and IC2 terminal output high level, now input voltage value of mediating of the end of oppisite phase of amplifier U1, thereby amplifier U1 feeds back to DC/DC power module control signal and makes DC/DC power module output voltage progressively be elevated to median, thereby make the electric current of charge in batteries progressively rise to median, now control unit continues output control command, make IC1 terminal and IC2 terminal output low level, amplifier U1 output low level makes the power supply of DC/DC power module output HIGH voltage, the charging current of storage battery also continues to be increased to large electric current, when the charging current of storage battery reaches set point (being detected by control unit), control unit makes terminal FD1 and DHC output high level, control metal-oxide-semiconductor T2 conducting, DC/DC power module is directly powered to safety barrier circuit, safety barrier circuit is to load output current, and also conducting of metal-oxide-semiconductor T3, owing to there being fly-wheel diode in metal-oxide-semiconductor, the conducting at this moment of storage battery power supply path, now the voltage of storage battery lower than diode D6 cathode voltage not to externally fed,
In the time that outside is inputted without direct current, intrinsic safety electric source output electric energy has storage battery to provide completely, and the voltage of storage battery output is outwards exported through safety barrier circuit, and control unit is worked by storage battery power supply, and storage battery power supply path is opened completely.
In the time that intrinsic safety electric source needs cascade device, terminal IC1 and the IC2 of control unit export high level simultaneously, thereby make DC/DC power module output LOW voltage and reduce output current.
Finally explanation is, above embodiment is only unrestricted in order to technical side's peace of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical side's peace of the present invention, and the aim and the scope that do not depart from the technology of the present invention Fang An, it all should be encompassed in the middle of claim scope of the present invention.
Claims (10)
1. a stepped starting type mine intrinsic safety electric source, is characterized in that: at least comprise receive direct current and direct current is boosted or the DC/DC power subsystem of step-down processing, safety barrier circuit, batteries, Power supply control circuit, storage battery power supply control circuit, for obtaining the voltage of batteries and comparing voltage comparison unit and the control unit of computing with the reference voltage arranging;
Described DC/DC power subsystem is electrically connected with described safety barrier circuit by Power supply control circuit; Described batteries is electrically connected with described safety barrier circuit by storage battery power supply control circuit; Described voltage comparison unit input is electrically connected with batteries, output is electrically connected with DC/DC power subsystem, described control unit is powered by DC/DC power subsystem and to Power supply control circuit and storage battery power supply control circuit output control signal, described control unit is also electrically connected with the positive pole of described batteries.
2. stepped starting type mine intrinsic safety electric source according to claim 1, it is characterized in that: described voltage comparison unit is also provided with the comparison reference voltage initialization circuit for reducing the comparison reference voltage value in voltage comparison unit, described comparison reference voltage initialization circuit input is electrically connected with control unit, and output is electrically connected with the input of voltage comparison unit.
3. stepped starting type mine intrinsic safety electric source according to claim 2; it is characterized in that: the input of described DC/DC power module is provided with starting resistor initialization circuit and starting protection circuit; the input termination DC power supply of described starting protection circuit; the output of starting protection circuit is set end with the voltage of starting resistor initialization circuit and DC/DC power module and is electrically connected, and described starting resistor initialization circuit is electrically connected with the input of DC/DC power module.
4. stepped starting type mine intrinsic safety electric source according to claim 3, is characterized in that: the input of described voltage comparison unit is provided with current amplification circuit, and described current amplification circuit is used for obtaining storage battery and flows through and amplify backward voltage comparison unit output.
5. stepped starting type mine intrinsic safety electric source according to claim 4, is characterized in that: described Power supply control circuit comprises metal-oxide-semiconductor T1 (mos field effect transistor), metal-oxide-semiconductor T2, diode D6, triode Q3, triode Q4 and diode D5;
The source electrode of described metal-oxide-semiconductor T1 is electrically connected with DC/DC power subsystem output, the drain electrode of described metal-oxide-semiconductor T1 is electrically connected with the positive pole of diode D5, the negative pole of diode D5 is electrically connected with the positive pole of batteries, the grid of metal-oxide-semiconductor T1 is electrically connected with the collector electrode of triode Q3, the grounded emitter of triode Q3, the base stage of triode Q3 is electrically connected with control unit; The source electrode of metal-oxide-semiconductor T2 is electrically connected with the source electrode of metal-oxide-semiconductor T1, the drain electrode of metal-oxide-semiconductor T2 is electrically connected with the positive pole of diode D6, the negative pole of diode D6 is electrically connected with the input of safety barrier circuit, the grid of metal-oxide-semiconductor T2 is electrically connected with the collector electrode of triode Q4, the grounded emitter of triode Q4, the base stage of triode Q4 is electrically connected with the output of control unit.
6. stepped starting type mine intrinsic safety electric source according to claim 5, is characterized in that: described storage battery power supply control circuit comprises metal-oxide-semiconductor T3, metal-oxide-semiconductor T4, triode Q5 and triode Q6;
The source electrode of described metal-oxide-semiconductor T3 is electrically connected with the positive pole of batteries, the drain electrode of metal-oxide-semiconductor T3 is electrically connected with the drain electrode of metal-oxide-semiconductor T4, the source electrode of metal-oxide-semiconductor T4 is electrically connected with the input of safety barrier circuit, the grid of described metal-oxide-semiconductor T3 is electrically connected with the collector electrode of triode Q5, the grid of metal-oxide-semiconductor T4 is electrically connected with the collector electrode of triode Q6, the base stage of described triode Q5 and triode Q6 is all electrically connected with control unit output, the grounded emitter of described triode Q5 and triode Q6.
7. stepped starting type mine intrinsic safety electric source according to claim 6, is characterized in that: described voltage comparison unit comprises amplifier U1, the 4th resistance R 4, the 8th resistance R 8, the second resistance R the 2, the 13 resistance R 13, the first capacitor C 1, the 4th diode D4 and the 14 resistance R 14;
The in-phase end of described amplifier U1 is electrically connected with the output of current amplification circuit by the 4th resistance R 4, the end of oppisite phase of described amplifier U1 is connected with one end of the 8th resistance R 8, the other end of the 8th resistance R 8 is as reference voltage input, the output of described amplifier U1 is electrically connected with the positive pole of the 4th diode D4, and the negative pole of the 4th diode D4 is electrically connected with DC/DC power supply power supply by the 14 resistance R 14; The output of described amplifier U1 is electrically connected with end of oppisite phase after connecting by the first electric capacity and the 13 resistance R 13, and the end of oppisite phase of described amplifier U1 is also by the second resistance R 2 ground connection.
8. stepped starting type mine intrinsic safety electric source according to claim 7, is characterized in that: described comparison reference voltage initialization circuit comprises the 3rd resistance R 3, the 7th resistance R 7, triode Q1 and triode Q2;
The base stage of described triode Q2 is electrically connected with the output of control unit, the collector electrode of triode Q2 is electrically connected with the end of oppisite phase of amplifier U1 by the 7th resistance R 7, the base stage of triode Q1 is electrically connected with the output of control unit, the collector electrode of triode Q1 is electrically connected with the end of oppisite phase of amplifier U1 by the 3rd resistance R 3, the grounded emitter of described triode Q1 and triode Q2.
9. stepped starting type mine intrinsic safety electric source according to claim 8; it is characterized in that: described starting resistor initialization circuit comprises the 5th resistance R 5, the 6th resistance R 6 and the 4th capacitor C 4; the power settings end of described DC/DC power subsystem is by the 4th capacitor C 4 ground connection; the power settings end of described DC/DC power subsystem is electrically connected with the output of starting protection circuit by the 5th resistance R 5, and the power settings end of described DC/DC power subsystem is by the 6th resistance R 6 ground connection.
10. stepped starting type mine intrinsic safety electric source according to claim 9, it is characterized in that: described starting protection circuit comprises the first diode D1, the second diode D2, the first resistance R 1, the 3rd diode D3 and the second capacitor C 2, and described the second electric capacity is electrochemical capacitor;
The positive pole of described the first diode D1 with as the input termination DC power supply of intrinsic safety electric source, the negative pole of the first diode D1 is electrically connected with the positive pole of the second capacitor C 2 by the first resistance R 1, the minus earth of the second electric capacity, the positive pole of the second capacitor C 2 is electrically connected with the positive pole of the 3rd diode D3, the negative pole of the 3rd diode D3 is electrically connected with the input of DC/DC power subsystem, the negative pole of the first diode D1 is also electrically connected with the positive pole of the second diode D2, and the negative pole of the second diode D2 is electrically connected with the input of DC/DC power subsystem.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107302305A (en) * | 2017-07-20 | 2017-10-27 | 深圳市共进电子股份有限公司 | Switching power source control circuit and method |
| CN111224437A (en) * | 2018-11-24 | 2020-06-02 | 深圳市三奇科技有限公司 | Battery control panel working method, battery control panel and unmanned aerial vehicle |
| CN111555636A (en) * | 2020-06-29 | 2020-08-18 | 天津中煤电子信息工程有限公司 | Intrinsic safety voltage relay prolonging device |
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| CN201146395Y (en) * | 2008-01-30 | 2008-11-05 | 北京无线电计量测试研究所 | Online non-interruption switch power-supply |
| JP4177412B2 (en) * | 2003-08-05 | 2008-11-05 | 松下電器産業株式会社 | DC power supply device and battery-powered electronic device incorporating the same |
| CN103178588A (en) * | 2013-04-18 | 2013-06-26 | 中煤科工集团重庆研究院 | Mining gas pipeline uninterruptible direct current power supply |
| CN203734530U (en) * | 2013-12-13 | 2014-07-23 | 中煤科工集团重庆研究院有限公司 | Grading start type mining intrinsic safe power supply |
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| JP4177412B2 (en) * | 2003-08-05 | 2008-11-05 | 松下電器産業株式会社 | DC power supply device and battery-powered electronic device incorporating the same |
| CN201146395Y (en) * | 2008-01-30 | 2008-11-05 | 北京无线电计量测试研究所 | Online non-interruption switch power-supply |
| CN103178588A (en) * | 2013-04-18 | 2013-06-26 | 中煤科工集团重庆研究院 | Mining gas pipeline uninterruptible direct current power supply |
| CN203734530U (en) * | 2013-12-13 | 2014-07-23 | 中煤科工集团重庆研究院有限公司 | Grading start type mining intrinsic safe power supply |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107302305A (en) * | 2017-07-20 | 2017-10-27 | 深圳市共进电子股份有限公司 | Switching power source control circuit and method |
| CN111224437A (en) * | 2018-11-24 | 2020-06-02 | 深圳市三奇科技有限公司 | Battery control panel working method, battery control panel and unmanned aerial vehicle |
| CN111555636A (en) * | 2020-06-29 | 2020-08-18 | 天津中煤电子信息工程有限公司 | Intrinsic safety voltage relay prolonging device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103812164B (en) | 2017-03-29 |
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