CN105471325A - Low-frequency inspection integrated device special for fire fighting - Google Patents
Low-frequency inspection integrated device special for fire fighting Download PDFInfo
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- CN105471325A CN105471325A CN201510585533.5A CN201510585533A CN105471325A CN 105471325 A CN105471325 A CN 105471325A CN 201510585533 A CN201510585533 A CN 201510585533A CN 105471325 A CN105471325 A CN 105471325A
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Abstract
The invention provides a low-frequency inspection integrated device special for fire fighting. The low-frequency inspection integrated device special for fire fighting comprises an MCU, namely a CPU. The CPU is connected with a human-computer interface module, a protection module, a logic control module, a black box module, a power supply module, a remote communication module, a low-frequency module and an inspection module. The MCU is in communication connection with a display module, a thyristor driving module, a heat dissipation fan control module and a built-in bypass module. The MCU, the display module, the communication module, the thyristor driving module, the protection module, the heat dissipation fan control module and the built-in bypass module are respectively in electric connection with a switch power supply module. In this way, a motor starting device of a built-in single-phase bypass is formed. The device provided by the invention overcomes the defects in the prior art.
Description
Technical field
The invention belongs to technical field of fire control, be specifically related to a kind of fire-fighting special low frequency patrol inspection integral device.
Background technology
Existing device of patrolling and examining for fire-fighting low frequency, often utilizes the blades push air of cooling fan to flow with the direction identical with axle.Impeller and the screw of axial flow blower are somewhat similar, it operationally, the flow direction of most air-flow is parallel with axle, in other words in the axial direction.Axial flow blower is when inlet air flow is the free air of 0 static pressure, and it is least in power-consuming, also can be able to increase when in place along with the rising power consumption of air-flow counter-pressure.Axial flow blower is contained on the rack of electric equipment usually, is sometimes also incorporated on motor, due to axial flow blower compact conformation, can save a lot of space, simultaneously easy for installation, is therefore widely used; But the integrated level of the control system of existing cooling fan is high not enough, and wasting space is large.
The soft starter of existing device of patrolling and examining for fire-fighting low frequency adopts by silicon controlled voltage regulating mode usually, electric moter voltage raises gradually, thus motor speed raises gradually, reach soft start motor object, reduce motor starting currents, but often adopt voltage regulating mode, motor torque diminishes, the deliquescing of motor curve characteristic, starting current, at 3 ~ 4 times, also has certain impact to electrical network.When not changing hardware SCR structure, employing variable frequency control algorithm as usual, motor torque becomes large, starting current, at 2 times, reduces and impacts, if motor is the words of heavy-load start electrical network, Regulation Control is improper, can not heavy-load start, and variable frequency control better can play motor performance, drives heavily loaded motor.
The existing water level of device of patrolling and examining for fire-fighting low frequency and the control method of hydraulic pressure, generally adopt water pump water tank associating water supply modes: water pump absorbs water from tank, after pressurization, send into water tank.Because the controlled quentity controlled variable of water pump water level and hydraulic pressure is greater than system water amount, cistern water level rises, and to termination of pumping during high water level, restarts when low water level.Such water pump and water tank associated working, water pump, in time to water tank water-filling, can reduce water tank capacity.Meanwhile, under the adjustment of water tank, water pump can be stabilized in high-efficiency point work, saves power consumption.Elevated tank adopts level relay control starting mode of pump, be easy to realize management automation.Tank and water tank can lay in certain water yield, strengthen the security reliability of the control of water level and hydraulic pressure.But such system one-time investment is comparatively large, equipment and operating cost higher, install and safeguard cumbersome.
The remote motor drived control mode based on Ethernet of existing device of patrolling and examining for fire-fighting low frequency, along with the development of control technology and society are to the raising of power conservation requirement, novel as one, the high efficiency motor of DC brushless motor is widely used.Traditional DC brushless motor adopts square wave control mode, controls simple, easily realizes, there is the problem such as torque pulsation, commutation noise simultaneously, have the application of requirement to there is limitation at some to noise.For these application, sinusoidal wave control is adopted to address this problem.But such drive and control of electric machine mode does not often realize the mode of Long-distance Control.
Summary of the invention
Object of the present invention provides a kind of fire-fighting special low frequency patrol inspection integral device, comprise MCU micro controller module, also be CPU, the same human-computer interface module of described CPU, protection module, Logic control module, black box module, power module, remote communication module, low frequency module and polling module are connected, the same display module of MCU micro controller module, thyristor driver module, cooling fan control module and built in bypass module communicate connection, described MCU micro controller module, display module, communication module, thyristor driver module, protection module, cooling fan control module and built in bypass module are all electrically connected with switch power module, constitute the motor starting device of built-in single-phase bypass.Such structure avoids the defect of prior art.
In order to overcome deficiency of the prior art, the invention provides the solution of a kind of fire-fighting special low frequency patrol inspection integral device, specific as follows:
A kind of fire-fighting special low frequency patrol inspection integral device, comprise MCU micro controller module, also be CPU, the same human-computer interface module of described CPU, protection module, Logic control module, black box module, power module, remote communication module, low frequency module and polling module are connected, the same display module of MCU micro controller module, thyristor driver module, cooling fan control module and built in bypass module communicate connection, described MCU micro controller module, display module, communication module, thyristor driver module, protection module, cooling fan control module and built in bypass module are all electrically connected with switch power module, constitute the motor starting device of built-in single-phase bypass,
Described switch power module provides necessary power supply for system works;
Described MCU micro controller module is used for carrying out Based Intelligent Control to system, by various kinds of sensors real-time monitoring system running status, and carries out internal arithmetic according to system default parameter and decorum running status and draws operation result;
Described display module belongs to human-computer interaction interface, for display system status information and human-computer interactive control, client is made to be set system by keyboard and to control like this, display screen then can reflect current setting or current operating conditions intuitively in real time, is namely set system and is controlled by button and display interface reading system state;
Described communication module is used for the communication of system and host computer, host computer obtains system status information by communication and controls system, this module is mainly used in consumer remote centralized control, and client carries out telecommunication control by host computer bus and each work station from machine;
Described thyristor driver module, for driving thyristor, its type of drive controls by MCU micro controller module, for the switch control rule to thyristor, and three-phase voltage is sampled, MCU microcontroller carries out analytical calculation to sampled signal and draws rational drive singal, and thyristor driver module is carried out isolation to drive singal and amplified control thyristor switch;
Described protection module is used for safeguard protection to whole system, and protection module comprises overheat protector, overvoltage protection, overload protection and short-circuit protection, carries out sampling monitor and send MCU to carry out process and reach intelligent protection by related sensor to working state of system;
Described cooling fan control module, by the detection intelligent control cooling blower fan to temperature, utilizes thyristor to carry out soft of intelligence to blower fan and has protective effect to blower fan, utilizes sensor intelligent monitoring intelligent to start cooling fan to temperature;
Described built in bypass module comprises some functions, and client can according to the actual demand Rational choice of self;
Described black lock submodule, can preserve and within more than 10 years, patrol and examine and run, protect such status data.
First described low frequency module builds controllable silicon drived control electric machine, namely by the first controllable silicon VT1 and the second controllable silicon VT4 of reverse parallel connection, 3rd controllable silicon VT3 of reverse parallel connection and the 4th controllable silicon VT6, 5th controllable silicon VT5 and the 6th controllable silicon VT2 of reverse parallel connection form the first Group of Silicon Controlled Rectifier respectively, second Group of Silicon Controlled Rectifier, 3rd Group of Silicon Controlled Rectifier, A phase line is connected by the A phase terminal of the first Group of Silicon Controlled Rectifier with motor, B phase line is connected by the B phase terminal of the second Group of Silicon Controlled Rectifier with motor, C phase line is connected by the C phase terminal of the 3rd Group of Silicon Controlled Rectifier with motor, use Ua in addition, Ub, Uc is respectively A phase voltage, B phase voltage, C phase voltage,
According to motor equivalent mathematical model, obtain the equation as shown in formula (1):
Wherein: Te: torque, Pe: power of motor, Ω
1: power supply angular speed, R
1: motor stator impedance X
1 σ: motor stator leakage reactance,
rotor equiva lent impedance,
rotor equivalent inductive reactance, S: revolutional slip, U
1for stator winding terminal voltage, calculated by formula (1): torque and voltage, revolutional slip relation, carry out soft starter variable frequency control according to this relation, specific as follows:
When needs export setpoint frequency, by gathering outside voltage phase signal, current signal, power-factor angle, enters the motor equivalent mathematical model described in inside, passes through Fuzzy Calculation, draw should trigger which silicon (VT1 ~ VT6), according to equation U at this phase point
1≈ E
1=4.44 × f
1× N
1× φ
1× K
w1, wherein f1 is supply frequency, and N1 is that stator winding is often in series the number of turn, K
w1for fundamental wave winding coefficient, Φ 1 is motor every pole magnetic flux, by means of frequency decrease, E1 also will decline, i.e. E1/f1=constant, otherwise motor can cross magnetic, cause vibrations and heating, need great starting voltage by this formulae discovery motor in this phase place, thus change into silicon controlled Trigger Angle, Eg: setpoint frequency triggers, and E1, also because reducing by half, meets E1/f1=constant, actual measurement voltage, power-factor angle, the area triggering equivalent waveform also should reduce by half, and meets E1 also because reducing by half.
Described setpoint frequency numerical value is 50/n....50/3,50/2,50.
Described polling module comprises the control system of water level and the hydraulic pressure built, the control system part of this water level and hydraulic pressure comprises water pump, pipeline, valve, water tank or air pressure tank, the work of water pump is controlled, water pump connecting tube, valve, water tank or air pressure tank by electrical control cubicles; Enter standby condition by this control system, namely priming level detector and hydraulic pressure detector sensed water level signal and hydraulic signal respectively, then drives water pump according to water level signal and hydraulic signal in conjunction with fuzzy PID algorithm; Drive water pump according to demand adjustment water level.
Described water level detection gauge includes level sensor.
Described remote communication module comprises the control system that remote motor drives, the control system that this remote motor drives comprises user terminal, described user terminal is connected with cloud platform, described cloud platform is connected with Ethernet by communication network, and described Ethernet is connected with I/O interface, motor drive module and the terminal with man-machine interface; The instruction of drive motors is sent like this at user terminal, Ethernet is entered successively by cloud platform and communication network, Ethernet is transferred to the terminal with man-machine interface subsequently, through I/O interface, input/output information is sent to the terminal with man-machine interface so again; Like this in conjunction with the instruction of input/output information and drive motors, the instruction that the terminal with man-machine interface sends drive motors carrys out drive motors eventually through motor drive module.
Described communication network is 3G network, 4G network, optical fiber, cable network or wireless network.
Present invention incorporates the advantage of frequency converter and soft starter, the variable frequency control of the low and frequency converter of the cost as soft starter, does not need the accurate application industry of frequency conversion or occasion at some, needs again motor low-frequency operation, as fire protection sector.Reach same object, but cost greatly reduces.Cost declines more than 50%
The present invention has protective effect via utilizing thyristor to carry out soft of intelligence to blower fan to blower fan, utilizes sensor intelligent monitoring intelligent to start cooling fan to temperature.The present invention also adopts by silicon controlled voltage regulating mode according to soft starter usually, electric moter voltage raises gradually, thus motor speed raises gradually, reach soft start motor object, reduce motor starting currents, but often adopt voltage regulating mode, motor torque diminishes, the deliquescing of motor curve characteristic, starting current, at 3 ~ 4 times, also has certain impact to electrical network.And when not changing hardware SCR structure, employing variable frequency control algorithm as usual, motor torque becomes large, starting current, at 2 times, reduces and impacts, if motor is the words of heavy-load start electrical network, Regulation Control is improper, can not heavy-load start, and variable frequency control better can play motor performance, drives heavily loaded motor.
Accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present invention.
Fig. 2 is the structural representation of the motor starting device of built-in single-phase bypass of the present invention.
Fig. 3 is silicon controlled connection diagram of the present invention.
Fig. 4 is the equivalent circuit diagram of motor of the present invention.
Fig. 5 is design sketch of the present invention.
Fig. 6 is the connection diagram of remote communication module of the present invention.
Embodiment
Below in conjunction with accompanying drawing, summary of the invention is described further:
Shown in Fig. 1-Fig. 6, fire-fighting special low frequency patrol inspection integral device, comprise MCU micro controller module, also be CPU, the same human-computer interface module of described CPU, protection module, Logic control module, black box module, power module, remote communication module, low frequency module and polling module are connected, the same display module of MCU micro controller module, thyristor driver module, cooling fan control module and built in bypass module communicate connection, described MCU micro controller module, display module, communication module, thyristor driver module, protection module, cooling fan control module and built in bypass module are all electrically connected with switch power module, constitute the motor starting device of built-in single-phase bypass,
Described switch power module provides necessary power supply for system works;
Described MCU micro controller module is used for carrying out Based Intelligent Control to system, by various kinds of sensors real-time monitoring system running status, and carries out internal arithmetic according to system default parameter and decorum running status and draws operation result;
Described display module belongs to human-computer interaction interface, for display system status information and human-computer interactive control, client is made to be set system by keyboard and to control like this, display screen then can reflect current setting or current operating conditions intuitively in real time, is namely set system and is controlled by button and display interface reading system state;
Described communication module is used for the communication of system and host computer, host computer obtains system status information by communication and controls system, this module is mainly used in consumer remote centralized control, and client carries out telecommunication control by host computer bus and each work station from machine;
Described thyristor driver module, for driving thyristor, its type of drive controls by MCU micro controller module, for the switch control rule to thyristor, and three-phase voltage is sampled, MCU microcontroller carries out analytical calculation to sampled signal and draws rational drive singal, and thyristor driver module is carried out isolation to drive singal and amplified control thyristor switch;
Described protection module is used for safeguard protection to whole system, and protection module comprises overheat protector, overvoltage protection, overload protection and short-circuit protection, carries out sampling monitor and send MCU to carry out process and reach intelligent protection by related sensor to working state of system;
Described cooling fan control module, by the detection intelligent control cooling blower fan to temperature, utilizes thyristor to carry out soft of intelligence to blower fan and has protective effect to blower fan, utilizes sensor intelligent monitoring intelligent to start cooling fan to temperature;
Described built in bypass module comprises some functions, and client can according to the actual demand Rational choice of self;
Described black lock submodule, can preserve and within more than 10 years, patrol and examine and run, protect such status data.
First described low frequency module builds controllable silicon drived control electric machine, namely by the first controllable silicon VT1 and the second controllable silicon VT4 of reverse parallel connection, 3rd controllable silicon VT3 of reverse parallel connection and the 4th controllable silicon VT6, 5th controllable silicon VT5 and the 6th controllable silicon VT2 of reverse parallel connection form the first Group of Silicon Controlled Rectifier respectively, second Group of Silicon Controlled Rectifier, 3rd Group of Silicon Controlled Rectifier, A phase line is connected by the A phase terminal of the first Group of Silicon Controlled Rectifier with motor, B phase line is connected by the B phase terminal of the second Group of Silicon Controlled Rectifier with motor, C phase line is connected by the C phase terminal of the 3rd Group of Silicon Controlled Rectifier with motor, use Ua in addition, Ub, Uc is respectively A phase voltage, B phase voltage, C phase voltage,
According to motor equivalent mathematical model, obtain the equation as shown in formula (1):
Wherein: Te: torque, Pe: power of motor, Ω
1: power supply angular speed, R
1: motor stator impedance X
1 σ: motor stator leakage reactance,
rotor equiva lent impedance,
rotor equivalent inductive reactance, S: revolutional slip, U
1for stator winding terminal voltage, calculated by formula (1): torque and voltage, revolutional slip relation, carry out soft starter variable frequency control according to this relation, specific as follows:
When needs export setpoint frequency, by gathering outside voltage phase signal, current signal, power-factor angle, enters the motor equivalent mathematical model described in inside, passes through Fuzzy Calculation, draw should trigger which silicon (VT1 ~ VT6), according to equation U at this phase point
1≈ E
1=4.44 × f
1× N
1× φ
1× K
w1, wherein f1 is supply frequency, and N1 is that stator winding is often in series the number of turn, K
w1for fundamental wave winding coefficient, Φ 1 is motor every pole magnetic flux, by means of frequency decrease, E1 also will decline, i.e. E1/f1=constant, otherwise motor can cross magnetic, cause vibrations and heating, need great starting voltage by this formulae discovery motor in this phase place, thus change into silicon controlled Trigger Angle, Eg: setpoint frequency triggers, and E1, also because reducing by half, meets E1/f1=constant, actual measurement voltage, power-factor angle, the area triggering equivalent waveform also should reduce by half, and meets E1 also because reducing by half.
Described setpoint frequency numerical value is 50/n....50/3,50/2,50.
Described polling module comprises the control system of water level and the hydraulic pressure built, the control system part of this water level and hydraulic pressure comprises water pump, pipeline, valve, water tank or air pressure tank, the work of water pump is controlled, water pump connecting tube, valve, water tank or air pressure tank by electrical control cubicles; Enter standby condition by this control system, namely priming level detector and hydraulic pressure detector sensed water level signal and hydraulic signal respectively, then drives water pump according to water level signal and hydraulic signal in conjunction with fuzzy PID algorithm; Drive water pump according to demand adjustment water level.
Described water level detection gauge includes level sensor.
Described remote communication module comprises the control system that remote motor drives, the control system that this remote motor drives comprises user terminal, described user terminal is connected with cloud platform, described cloud platform is connected with Ethernet by communication network, and described Ethernet is connected with I/O interface, motor drive module and the terminal with man-machine interface; The instruction of drive motors is sent like this at user terminal, Ethernet is entered successively by cloud platform and communication network, Ethernet is transferred to the terminal with man-machine interface subsequently, through I/O interface, input/output information is sent to the terminal with man-machine interface so again; Like this in conjunction with the instruction of input/output information and drive motors, the instruction that the terminal with man-machine interface sends drive motors carrys out drive motors eventually through motor drive module.
Described communication network is 3G network, 4G network, optical fiber, cable network or wireless network.
The present invention adopts by silicon controlled voltage regulating mode according to soft starter usually, electric moter voltage raises gradually, thus motor speed raises gradually, reach soft start motor object, reduce motor starting currents, but often adopt voltage regulating mode, motor torque diminishes, the deliquescing of motor curve characteristic, starting current, at 3 ~ 4 times, also has certain impact to electrical network.And when not changing hardware SCR structure, employing variable frequency control algorithm as usual, motor torque becomes large, starting current, at 2 times, reduces and impacts, if motor is the words of heavy-load start electrical network, Regulation Control is improper, can not heavy-load start, and variable frequency control better can play motor performance, drives heavily loaded motor.Present invention incorporates the control system first building water level and hydraulic pressure, the control system part of this water level and hydraulic pressure comprises water pump, pipeline, valve, water tank or air pressure tank, the work of water pump is controlled, water pump connecting tube, valve, water tank or air pressure tank by electrical control cubicles; Standby condition, namely priming level detector and hydraulic pressure detector sensed water level signal and hydraulic signal respectively, then drives water pump according to water level signal and hydraulic signal in conjunction with fuzzy PID algorithm; Drive water pump according to demand adjustment water level.The system one-time investment avoiding prior art is comparatively large, equipment and operating cost higher, install and safeguard cumbersome defect.Present invention incorporates the control system first constructing remote motor and drive, the control system that this remote motor drives comprises user terminal, described user terminal is connected with cloud platform, described cloud platform is connected with Ethernet by communication network, and described Ethernet is connected with I/O interface, motor drive module and the terminal with man-machine interface; The instruction of drive motors is sent like this at user terminal, Ethernet is entered successively by cloud platform and communication network, Ethernet is transferred to the terminal with man-machine interface subsequently, through I/O interface, input/output information is sent to the terminal with man-machine interface so again; Like this in conjunction with the instruction of input/output information and drive motors, the instruction that the terminal with man-machine interface sends drive motors carrys out drive motors eventually through motor drive module.Really achieve the object of Long-distance Control motor.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, according to technical spirit of the present invention, within the spirit and principles in the present invention, to any simple amendment that above embodiment is done, equivalent replacement and improvement etc., within the protection range all still belonging to technical solution of the present invention.
Claims (7)
1. a fire-fighting special low frequency patrol inspection integral device, it is characterized in that comprising MCU micro controller module, also be CPU, the same human-computer interface module of described CPU, protection module, Logic control module, black box module, power module, remote communication module, low frequency module and polling module are connected, the same display module of MCU micro controller module, thyristor driver module, cooling fan control module and built in bypass module communicate connection, described MCU micro controller module, display module, communication module, thyristor driver module, protection module, cooling fan control module and built in bypass module are all electrically connected with switch power module, constitute the motor starting device of built-in single-phase bypass,
Described switch power module provides necessary power supply for system works;
Described MCU micro controller module is used for carrying out Based Intelligent Control to system, by various kinds of sensors real-time monitoring system running status, and carries out internal arithmetic according to system default parameter and decorum running status and draws operation result;
Described display module belongs to human-computer interaction interface, for display system status information and human-computer interactive control, client is made to be set system by keyboard and to control like this, display screen then can reflect current setting or current operating conditions intuitively in real time, is namely set system and is controlled by button and display interface reading system state;
Described communication module is used for the communication of system and host computer, host computer obtains system status information by communication and controls system, this module is mainly used in consumer remote centralized control, and client carries out telecommunication control by host computer bus and each work station from machine;
Described thyristor driver module, for driving thyristor, its type of drive controls by MCU micro controller module, for the switch control rule to thyristor, and three-phase voltage is sampled, MCU microcontroller carries out analytical calculation to sampled signal and draws rational drive singal, and thyristor driver module is carried out isolation to drive singal and amplified control thyristor switch;
Described protection module is used for safeguard protection to whole system, and protection module comprises overheat protector, overvoltage protection, overload protection and short-circuit protection, carries out sampling monitor and send MCU to carry out process and reach intelligent protection by related sensor to working state of system;
Described cooling fan control module, by the detection intelligent control cooling blower fan to temperature, utilizes thyristor to carry out soft of intelligence to blower fan and has protective effect to blower fan, utilizes sensor intelligent monitoring intelligent to start cooling fan to temperature;
Described built in bypass module comprises some functions, and client can according to the actual demand Rational choice of self;
Described black lock submodule, can preserve and within more than 10 years, patrol and examine and run, protect such status data.
2. fire-fighting according to claim 1 special low frequency patrol inspection integral device, it is characterized in that first described low frequency module builds controllable silicon drived control electric machine, namely by the first controllable silicon VT1 and the second controllable silicon VT4 of reverse parallel connection, 3rd controllable silicon VT3 of reverse parallel connection and the 4th controllable silicon VT6, 5th controllable silicon VT5 and the 6th controllable silicon VT2 of reverse parallel connection form the first Group of Silicon Controlled Rectifier respectively, second Group of Silicon Controlled Rectifier, 3rd Group of Silicon Controlled Rectifier, A phase line is connected by the A phase terminal of the first Group of Silicon Controlled Rectifier with motor, B phase line is connected by the B phase terminal of the second Group of Silicon Controlled Rectifier with motor, C phase line is connected by the C phase terminal of the 3rd Group of Silicon Controlled Rectifier with motor, use Ua in addition, Ub, Uc is respectively A phase voltage, B phase voltage, C phase voltage,
According to motor equivalent mathematical model, obtain the equation as shown in formula (1):
Wherein: Te: torque, Pe: power of motor, Ω
1: power supply angular speed, R
1: motor stator impedance X
1 σ: motor stator leakage reactance,
rotor equiva lent impedance,
rotor equivalent inductive reactance, S: revolutional slip, U
1for stator winding terminal voltage, calculated by formula (1): torque and voltage, revolutional slip relation, carry out soft starter variable frequency control according to this relation, specific as follows:
When needs export setpoint frequency, by gathering outside voltage phase signal, current signal, power-factor angle, enters the motor equivalent mathematical model described in inside, passes through Fuzzy Calculation, draw should trigger which silicon (VT1 ~ VT6), according to equation U at this phase point
1≈ E
1=4.44 × f
1× N
1× φ
1× K
w1, wherein f1 is supply frequency, and N1 is that stator winding is often in series the number of turn, K
w1for fundamental wave winding coefficient, Φ 1 is motor every pole magnetic flux, by means of frequency decrease, E1 also will decline, i.e. E1/f1=constant, otherwise motor can cross magnetic, cause vibrations and heating, need great starting voltage by this formulae discovery motor in this phase place, thus change into silicon controlled Trigger Angle, Eg: setpoint frequency triggers, and E1, also because reducing by half, meets E1/f1=constant, actual measurement voltage, power-factor angle, the area triggering equivalent waveform also should reduce by half, and meets E1 also because reducing by half.
3. fire-fighting according to claim 2 special low frequency patrol inspection integral device, is characterized in that described setpoint frequency numerical value is 50/n....50/3,50/2,50.
4. fire-fighting according to claim 1 special low frequency patrol inspection integral device, it is characterized in that described polling module comprises the control system of water level and the hydraulic pressure built, the control system part of this water level and hydraulic pressure comprises water pump, pipeline, valve, water tank or air pressure tank, the work of water pump is controlled, water pump connecting tube, valve, water tank or air pressure tank by electrical control cubicles; Enter standby condition by this control system, namely priming level detector and hydraulic pressure detector sensed water level signal and hydraulic signal respectively, then drives water pump according to water level signal and hydraulic signal in conjunction with fuzzy PID algorithm; Drive water pump according to demand adjustment water level.
5. fire-fighting according to claim 4 special low frequency patrol inspection integral device, is characterized in that described water level detection gauge includes level sensor.
6. fire-fighting according to claim 1 special low frequency patrol inspection integral device, it is characterized in that described remote communication module comprises the control system of remote motor driving, the control system that this remote motor drives comprises user terminal, described user terminal is connected with cloud platform, described cloud platform is connected with Ethernet by communication network, and described Ethernet is connected with I/O interface, motor drive module and the terminal with man-machine interface; The instruction of drive motors is sent like this at user terminal, Ethernet is entered successively by cloud platform and communication network, Ethernet is transferred to the terminal with man-machine interface subsequently, through I/O interface, input/output information is sent to the terminal with man-machine interface so again; Like this in conjunction with the instruction of input/output information and drive motors, the instruction that the terminal with man-machine interface sends drive motors carrys out drive motors eventually through motor drive module.
7. fire-fighting according to claim 1 special low frequency patrol inspection integral device, is characterized in that described communication network is 3G network, 4G network, optical fiber, cable network or wireless network.
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