CN103746579B - A kind of fire-fighting emergency power supply system - Google Patents
A kind of fire-fighting emergency power supply system Download PDFInfo
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- CN103746579B CN103746579B CN201410028645.6A CN201410028645A CN103746579B CN 103746579 B CN103746579 B CN 103746579B CN 201410028645 A CN201410028645 A CN 201410028645A CN 103746579 B CN103746579 B CN 103746579B
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Abstract
The invention discloses a kind of fire-fighting emergency power supply system, wherein, described system includes: civil power input module；Accumulator, it electrically connects with described civil power input module, and provides original power for described system；For realizing the inversion module of three-phase inversion or single-phase inversion, it is connected with described accumulator；First processor module, it electrically connects with described inversion module, to produce the original driving signal driving described inversion module；Second processor module, it electrically connects with described civil power input module, described accumulator, described inversion module and described first processor module respectively, properly functioning to control modules.The fire-fighting emergency power supply system of present invention design uses dual processor, greatly reduces the development difficulty of system, the most also makes the whole system speed of service accelerate, and fault rate can well be improved.
Description
Technical Field
The invention relates to a fire-fighting emergency power supply system, in particular to a fire-fighting emergency power supply system with double processors.
Background
At present, a processor is mostly adopted in a fire-fighting emergency power supply system for control processing, and when a driving circuit at an output end detects a problem, the driving circuit is fed back to the processor for judgment. When a problem occurs in the processor, all outputs cannot be cut off in time, resulting in a series of problems. Furthermore, due to the complex function of the system, if all the functions are loaded on one processor to run, the operation amount of the processor is huge, and once a running error occurs, the whole system is paralyzed.
Disclosure of Invention
Aiming at the problems to be solved, the invention provides a novel fire-fighting emergency power supply system, which has the advantages that the operation programs of the whole system are respectively loaded on the two processor modules by adopting a dual-processor model, so that the operation speed is accelerated, and the safe operation of the whole system can be effectively ensured.
The technical scheme provided by the invention is as follows:
a fire emergency power supply system, wherein the system comprises: a mains supply input module;
the storage battery is electrically connected with the commercial power input module and provides an original power supply for the system;
the inversion module is used for realizing three-phase inversion or single-phase inversion and is connected with the storage battery;
a first processor module electrically connected to the inverter module to generate an original driving signal to drive the inverter module;
and the second processor module is electrically connected with the commercial power input module, the storage battery, the inversion module and the first processor module respectively so as to control the normal operation of each module.
Preferably, the fire emergency power supply system further comprises:
the voltage output detection module is used for detecting whether the three-phase or single-phase inversion output voltage of the inversion module is normal or not, and the current output detection module is used for detecting whether the three-phase or single-phase inversion output current of the inversion module is normal or not; wherein,
the voltage output detection module is electrically connected to the first processor module, and the current output detection module is electrically connected to the second processor module.
Preferably, the first processor module is composed of a DSP chip, and the second processor module is composed of a single chip microcomputer chip.
Preferably, the fire emergency power supply system further comprises: and the switching power supply module is electrically connected with the storage battery and the second processor module respectively.
Preferably, the fire emergency power supply system further comprises: and the power supply conversion module is electrically connected with the switching power supply module and converts power supply voltages of different grades for the first processor module and the second processor module to normally work.
Preferably, the fire emergency power supply system further comprises: and the storage battery voltage sampling circuit module is electrically connected with the storage battery and the second processor module respectively so as to monitor the electric quantity of the storage battery in real time.
Preferably, the switching power supply module includes: the power supply comprises a switching power supply chip and a switching power supply self-locking circuit for controlling the switching power supply chip to be switched on and off; wherein,
the on-off self-locking circuit is composed of a double photoelectric coupler;
the signal input end of the first photoelectric coupler is connected with a button switch and used for controlling the optical coupling input of the first photoelectric coupler, and the signal output end of the first photoelectric coupler is electrically connected to the switching power supply chip;
and the signal input end of the second photoelectric coupler is connected to the second processor module, and the signal output end of the second photoelectric coupler is electrically connected to the switching power supply chip.
Preferably, the inverter module includes: at least two power modules and a drive circuit for driving the at least two power modules: the power module comprises two IGBT tubes which are electrically connected; for each IGBT tube, the driving circuit comprises:
and the optical coupling isolation driving chip is respectively electrically connected with the first processor module and the second processor module so as to receive an original driving signal from the first processor module for driving the IGBT tube and feed back a fault signal of the IGBT tube for the second processor module.
Preferably, the driving circuit further includes: a diode, the cathode of which is connected to the fault output end of the optical coupling isolation driving chip, and the anode of which is connected to the positive signal input end of the optical coupling isolation driving chip; and an original driving signal from the first processor module to drive the IGBT tube is sent to a reverse signal output end of the optical coupling isolation driving chip.
The fire-fighting emergency power supply system mainly solves the problems that the single processor has large operation amount and fault display cannot be carried out once the single processor fails by designing the double processors, and the operation programs of the whole system are respectively loaded on the two processor modules for carrying out, so that the operation speed is increased, the safe operation of the whole system can be effectively guaranteed, and the development difficulty is further reduced. Meanwhile, when the inverter output has faults due to the fact that the DSP has problems, the faults can be reported outwards through the single chip microcomputer and displayed.
Drawings
Fig. 1 is a circuit diagram of a commercial power input module of the fire-fighting emergency power supply system according to the invention;
FIG. 2 is a circuit diagram of a voltage output detection module of the fire emergency power system according to the present invention;
FIG. 3 is a circuit diagram of a current output detection module of the fire emergency power system according to the present invention;
FIG. 4 is a circuit diagram of a switching power supply module of the fire emergency power system according to the present invention;
FIG. 5 is a circuit diagram of a power conversion module of the fire emergency power system according to the present invention;
FIG. 6 is a circuit diagram of a storage battery voltage sampling circuit module of the fire emergency power system according to the present invention;
FIG. 7 is a circuit diagram of one of the power modules of the inverter module of the fire emergency power system according to the present invention;
fig. 8 is a circuit diagram between a storage battery and an inverter module of the fire emergency power system according to the present invention;
fig. 9 is a schematic diagram of a dual processor module employed in the fire emergency power system of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
As shown in fig. 1 to 4, the present invention provides a fire emergency power supply system, including: a mains supply input module; the storage battery is electrically connected with the commercial power input module (used for storing commercial power for later use) and provides an original power supply for the system; the inversion module is used for realizing three-phase inversion or single-phase inversion and is connected with the storage battery; a first processor module U3 electrically connected to the inverter module to generate a raw drive signal to drive the inverter module; and the second processor module U4 is electrically connected with the commercial power input module, the storage battery, the inversion module and the first processor module respectively so as to control the normal operation of each module. Here, the circuit connection between the mains input module and the storage battery is not shown, belongs to the prior art, and is not described in detail here. Meanwhile, the first processor module is preferably composed of a DSP chip, and the second processor module is preferably composed of a single chip microcomputer chip, wherein the single chip microcomputer chip is used as a main control chip. The invention mainly aims to provide a fire-fighting emergency power supply system applied to a three-phase load, namely three-phase inversion. The same principle is applied to single-phase inversion.
Specifically, as shown in fig. 1, a circuit layout of a mains input module is given, where the mains input module includes: the input ends of the three first transformers (T1, T2 and T3) are connected to a mains supply by a three-phase four-wire method, the output ends of the three first transformers are respectively and electrically connected with a first rectifier (D5, D6 and D7), namely, the mains supply is subjected to voltage reduction through the transformers and then outputs direct current signals through the rectifiers, and the output direct current signals are respectively sent to the second processor module through the first current limiting resistors. For the first transformer T1, its first current limiting resistor includes R7, R16; for the first transformer T2, its first current limiting resistor includes R8, R17; for the first transformer T3, its first current limiting resistor includes R10, R19. The commercial power input module sends commercial power signals to the second processor module after transformation and rectification so that the second processor can detect whether commercial power is normal or not.
Further, the fire emergency power supply system further comprises: the voltage output detection module is used for detecting whether the three-phase or single-phase inversion output voltage of the inversion module is normal or not, and the current output detection module is used for detecting whether the three-phase or single-phase inversion output current of the inversion module is normal or not; wherein the voltage output detection module is electrically connected to the first processor module U3 and the current output detection module is electrically connected to the second processor module U4.
Specifically, as shown in fig. 2, the voltage output detection module includes: and the input ends of the three second transformers (T4, T5 and T6) are also connected to the three-phase inversion output end of the fire-fighting emergency power supply by adopting a three-phase four-wire connection method, and the output ends of the three second transformers are respectively connected to the signal input end of the first processor module through a second rectifier (D8/D9/D10) and a second current-limiting resistor. For the second transformer T4, its second current limiting resistor includes R10, R19; for the second transformer T5, its second current limiting resistor includes R11, R20; for the second transformer T6, its second current limiting resistor includes R12, R21. Here, the voltage output detection module supplies the acquired inversion output voltage to the DSP for detection so as to detect whether the three-phase inversion output voltage is normal.
As shown in fig. 3, the current output detection module includes: and the input ends of the three third rectifiers (D11, D12 and D13) are connected with the three-phase inversion output end of the fire-fighting emergency power supply, and the output ends of the three third rectifiers are respectively connected with the signal input end of the second processor module (singlechip) through third current-limiting resistors. For D11, its third current limiting resistor includes R13, R22; for D12, its third current limiting resistor includes R14, R23; for D13, the third current limiting resistor includes R15, R24. Here, the current output detection module supplies the acquired inversion output current to the single chip microcomputer for detection so as to detect whether the three-phase inversion output current is normal or not.
In conclusion, the three-phase inversion output voltage and the current of the fire-fighting emergency power supply are respectively detected by the single chip microcomputer and the DSP, so that the development difficulty of detection by adopting a single processor is greatly reduced.
Preferably, the fire emergency power supply system provided by the invention further comprises: and the switching power supply module is electrically connected with the storage battery and the second processor module respectively. Specifically, as shown in fig. 4, the switching power supply module uses a switching power supply chip u1 as a core, uses a storage battery as an original power supply, and is further provided with a unique switching self-locking circuit. Wherein, u1, u2, u3 and u4 respectively provide driving power for the inverter module, and +24V provides original conversion power voltage for the single chip and the DSP (described in detail below). Here, the on-off self-locking circuit mainly consists of a double photoelectric coupler; the signal input end of the first photoelectric coupler OP9 is connected with a button switch ON for controlling the optical coupling input of the first photoelectric coupler, and the signal output end is electrically connected to the switching power supply chip XY; the signal input end of the second photoelectric coupler OP8 is connected to the second processor module (the P _ ON pin of the single chip microcomputer), and the signal output end is electrically connected to the switching power supply chip XY. Meanwhile, as can be seen from the figure, the design of the optical coupling input of the second photoelectric coupler OP8 can not only detect whether the single chip microcomputer system fails in advance, but also timely disconnect the power supply module of the switching power supply when the single chip microcomputer system has an operation error, thereby avoiding the expansion of the failure.
As mentioned above, the +24V provides the original conversion power voltage for the single chip and the DSP, and the normal working voltage of the single chip and the DSP is far below 24V, so the fire-fighting emergency power system provided by the present invention further comprises: and the power supply conversion module is electrically connected with the switching power supply module and converts power supply voltages of different grades for the first processor module and the second processor module to normally work. As shown in fig. 5, the apparatus includes a power supply voltage conversion circuit including U8, U9, and U10, which converts 24V to VCC1 (5V, for distinction only), DSP3.3V, +5V, respectively.
Here, since the electric energy of the storage battery is from the commercial power, the electric quantity of the storage battery is detected, and therefore the fire-fighting emergency power supply system of the present invention further includes: and the storage battery voltage sampling circuit module is electrically connected with the storage battery and the second processor module (ADC 1 of the single chip microcomputer) respectively so as to monitor the electric quantity of the storage battery in real time. As shown in fig. 6, it mainly includes three operational amplifiers U2A, U2B, U5A and an optical coupling chip OP 1.
As shown in fig. 7, the inversion module included in the fire emergency power system provided by the present invention includes: three power modules (p 1, p2, p 3) [ a detailed schematic diagram is given here for only one power module p1, p2, p3 being similar ] and a driving circuit for driving the three power modules: wherein, the power module comprises two electrically connected IGBT tubes (how to connect them belongs to the prior art, and will not be described in detail here); and for each IGBT tube, the driving circuit comprises: and the optical coupling isolation driving chip (taking OP1 as an example) is respectively and electrically connected with the first processor module (PWM 11) and the second processor module (FAULT) so as to receive an original driving signal for driving the power tube from the first processor module (DSP) and simultaneously feed back a FAULT signal of the power tube for the second processor module (singlechip). The present invention is unique to this part of the drive circuit in that: when overvoltage and overcurrent faults occur in one IGBT tube of the three power modules, the inverter output of the IGBT tubes of all the power modules can be cut off in time without the response of the single chip microcomputer, and therefore the situation that other power modules forcibly transmit power due to the fact that the single chip microcomputer responds in time or faults occur can be avoided. The specific implementation mode is as follows: a diode D3 is designed, wherein the cathode of the diode D3 is connected to the fault output end of the optical coupling isolation driving chip, and the anode of the diode D3 is connected to the positive signal input end VIN + of the optical coupling isolation driving chip; and an original driving signal from the first processor module to drive the power tube is sent to an inverse signal output end VIN-of the optical coupling isolation driving chip. When overvoltage overcurrent fault appears in the IGBT pipe promptly, its trouble output pin 6 will export the low level, and diode D3 switches on this moment, will receive this fault signal under the singlechip normal condition, simultaneously because the forward signal input part of opto-coupler isolation driver chip also can be drawn low, will make its opto-coupler input obstructed, lead to coming from DSP's drive signal can't enter into opto-coupler isolation driver chip, and then power module P1 also can not have the contravariant output.
When the storage battery and the inversion module are inverted, the single chip microcomputer is required to carry out real-time detection control, namely, the single chip microcomputer can detect whether the commercial power is abnormal or not through the commercial power input module at any time, and simultaneously control the commercial power to charge the storage battery under the condition that the commercial power is normal, and detect the charging condition of the storage battery through the storage battery voltage sampling module. When the single chip microcomputer detects that the commercial power fails, a direct current path between the storage battery and the inverter module is communicated, and a main control relay is arranged on the direct current path. Specifically, as shown in fig. 8, three relays, namely K1, K2 and K3, are included, and since the single chip microcomputer is supplied with weak current, in order to control the driving relay, a driving chip U1 needs to be added to improve the external driving capability of the single chip microcomputer. K1 and K3 attract K3 and disconnect K1 under the normal condition of the mains supply, the storage battery is controlled to charge the external capacitor P1 (C1 and C2), and the electricity storage condition of the storage battery can be known by detecting the voltage of the end C2. When the failure of the mains supply is detected, the K3 is disconnected, the K1 is attracted, the attraction of the K1 enables the external main controller connected to the P3 to communicate the storage battery with the direct current loop of the power module in the inversion module, and therefore the inversion module is started to invert under the control of the single chip microcomputer to play the role of serving as the standby power supply.
In order to display parameters, operation conditions and the like of the system on a cabinet of the fire-fighting emergency power supply, the fire-fighting emergency power supply system further comprises a display screen module, wherein the display screen module adopts OCM12864-2LCD liquid crystal display and is controlled by the singlechip module to carry out normal display. Finally, fig. 9 shows a dual processor module adopted by the fire-fighting emergency power supply system of the invention, which is respectively realized by adopting a single chip microcomputer and a DSP chip.
The fire-fighting emergency power supply system mainly solves the problems that the single processor has large operation amount and fault display cannot be carried out once the single processor fails by designing the double processors, and the operation programs of the whole system are respectively loaded on the two processor modules for carrying out, so that the operation speed is increased, the safe operation of the whole system can be effectively guaranteed, and the development difficulty is further reduced. Meanwhile, when the inverter output has faults due to the fact that the DSP has problems, the faults can be reported outwards through the single chip microcomputer and displayed.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (7)
1. A fire emergency power system, the system comprising: a mains supply input module;
the storage battery is electrically connected with the commercial power input module and provides an original power supply for the system;
the inversion module is used for realizing three-phase inversion or single-phase inversion and is connected with the storage battery;
a first processor module electrically connected to the inverter module to generate an original driving signal to drive the inverter module;
the second processor module is electrically connected with the commercial power input module, the storage battery, the inversion module and the first processor module respectively so as to control the modules to normally operate;
wherein, the contravariant module includes: at least two power modules and a drive circuit for driving the at least two power modules: the power module comprises two IGBT tubes which are electrically connected; for each IGBT tube, the driving circuit comprises:
the optical coupling isolation driving chip is respectively and electrically connected with the first processor module and the second processor module so as to receive an original driving signal which is from the first processor module and drives the IGBT tube and feed back a fault signal of the IGBT tube for the second processor module;
a diode, the cathode of which is connected to the fault output end of the optical coupling isolation driving chip, and the anode of which is connected to the positive signal input end of the optical coupling isolation driving chip;
and the original driving signal from the first processor module for driving the IGBT tube is sent to the reverse signal output end of the optical coupling isolation driving chip.
2. A fire emergency power supply system as in claim 1, further comprising:
the voltage output detection module is used for detecting whether the three-phase or single-phase inversion output voltage of the inversion module is normal or not, and the current output detection module is used for detecting whether the three-phase or single-phase inversion output current of the inversion module is normal or not; wherein,
the voltage output detection module is electrically connected to the first processor module, and the current output detection module is electrically connected to the second processor module.
3. A fire emergency power supply system as in claim 2, wherein said first processor module is comprised of DSP chips and said second processor module is comprised of single chip microcomputer chips.
4. A fire emergency power supply system as in claim 3, further comprising: and the switching power supply module is electrically connected with the storage battery and the second processor module respectively.
5. A fire emergency power supply system as in claim 4, further comprising: and the power supply conversion module is electrically connected with the switching power supply module and converts power supply voltages of different grades for the first processor module and the second processor module to normally work.
6. A fire emergency power supply system as in claim 5, further comprising: and the storage battery voltage sampling circuit module is electrically connected with the storage battery and the second processor module respectively so as to monitor the electric quantity of the storage battery in real time.
7. A fire emergency power supply system as in claim 4, wherein the switching power supply module comprises: the power supply comprises a switching power supply chip and a switching power supply self-locking circuit for controlling the switching power supply chip to be switched on and off; wherein,
the on-off self-locking circuit is composed of a double photoelectric coupler;
the signal input end of the first photoelectric coupler is connected with a button switch and used for controlling the optical coupling input of the first photoelectric coupler, and the signal output end of the first photoelectric coupler is electrically connected to the switching power supply chip;
and the signal input end of the second photoelectric coupler is connected to the second processor module, and the signal output end of the second photoelectric coupler is electrically connected to the switching power supply chip.
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| CN201410028645.6A CN103746579B (en) | 2013-12-13 | 2014-01-22 | A kind of fire-fighting emergency power supply system |
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| CN201310683318 | 2013-12-13 | ||
| CN201310683318.X | 2013-12-13 | ||
| CN201310683318X | 2013-12-13 | ||
| CN201410028645.6A CN103746579B (en) | 2013-12-13 | 2014-01-22 | A kind of fire-fighting emergency power supply system |
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| CN203761290U (en) * | 2013-12-13 | 2014-08-06 | 四川格来消防电器设备有限公司 | Firefighting emergency power supply system |
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| CN101557115A (en) * | 2009-05-15 | 2009-10-14 | 江苏省电力公司金湖县供电公司 | Energy storing device for supplying valley current at peak of current supply |
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| CN202712964U (en) * | 2012-07-09 | 2013-01-30 | 上海雷诺尔电源有限公司 | Novel digital intelligent EPS fire emergency power supply system |
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