350results about How to "Complete protection functions" patented technology

The invention relates to a variable-frequency power source based on the control of a digital signal processor, which comprises a switch power source module, a control circuit, a circuit for isolating and shaping pulse-width modulating signal, IPM inverting circuits, a circuit for detecting and protecting busbar voltage, a rectification input slow-start circuit, a communication circuit, an interface circuit for isolating and inputting parallel signals and an human-computer interface circuit for displaying the key. The invention adopts the structure of a single digital signal processor (DSP) coupled with the double IPM inverting circuits, provides two paths of independent variable-frequency power sources for two sets of asynchronous motors at the same time and carries out independent speed regulations to the two sets of asynchronous motors. The variable-frequency power source of the invention has the advantages of small volume, low power consumption, high reliability and being convenient for bulk production, etc., and adopts an appropriate switch frequency and an advanced voltage space vector pulse width modulation algorithm (SVPWM), thereby lowering the noise during the operation of the asynchronous motors and increasing the voltage utilization rate, with obvious effect on energy saving.

The invention discloses an intelligent control system for an electric vehicle alternating-current charging pile. The system comprises a CPU system, an abrupt stop button circuit, an electronic lock circuit, an auxiliary power supply circuit, an LCD, a keyboard circuit, a not-grounding detection circuit, a temperature sensor circuit, an RFID card reader circuit, a storage circuit, a voltage / current detection circuit, an electric meter circuit, a background communication interface circuit, an output circuit, a control guide circuit, and an indicator light circuit. The intelligent control system has the advantage that the system has a vehicle interface automatic matching function, an identity recognition function, a reservation function, a temperature protection function, a charging cable anti-theft function and a flexible configuration function.

The invention designs an automatic temperature control circuit which has exact control, reliable and stable performance and complete protective measures, and is used for executing effective real time control on the temperature of a tube core of a pump laser in ASE broadband light source. The control device adopts the design proposal of a temperature control system based on Proportion Integration Differentiation (PID) control and pulse-width modulation (PWM) braking mechanism and realizes the designs by adopting a pure hardware circuit; the control device comprises a reference voltage circuit, a pumping tube core temperature testing circuit, a thermoelectric voltage amplifier circuit, a PID controller, a pumping refrigeration current limiting protective threshold set circuit, an efficient PWM control driver, a pumping semiconductor refrigerator and a pumping tube core temperature out-of-limit close protective circuit. The whole circuit has simple and compact design, high reliability as well as heating and refrigerating efficiency, and little self heating, thereby greatly reducing the power consumption and volume of a pumping temperature controller; as the control device has the complete protective function, when the temperature of the pumping tube core exceeds the set range of operating temperature, the circuit sends out the gang control signal to automatically close a drive circuit of the pumping. The pumping refrigeration current limiting protective circuit limits the refrigeration current within the range of the preset maximum refrigeration current range to prevent the pumping from being damaged.

This invention discloses a inversion method for photovoltaic parallel in network, which uses digital signal processor (DSP) as core, the power factor is one and having small harmonic pollution to electric network, said method is a high efficiency and high reliability inversion method.

The invention discloses an intelligent integrated power supply device for Internet of Things. The intelligent integrated power supply device comprises a front public power supply module, a single chip microcomputer core control module, a DC voltage grade conversion module and a communication interface module, wherein the front public power supply module comprises an AC / DC front base voltage stabilizing circuit and an auxiliary power supply circuit; the single chip microcomputer core control module completes collecting and monitoring of voltage and current of various paths of output modules, and achieves a programmable presetting function on output voltage and over-voltage, over-current and over-temperature protection functions of various output loops of a complete machine through digital potentiometers; the DC voltage grade conversion module comprises four paths of identical modules; each module comprises a DC / DC converter circuit, a current / voltage sampling circuit and the digital potentiometer; and the communication interface module is connected with serial communication pins of a single chip microcomputer, completes the function of connecting different forms of actual transmission interfaces and forms connection with a network from an upper node to a monitoring center.

The invention discloses a ground automatic neutral-section passing device and a control method thereof. The ground automatic neutral-section passing device comprises a train identification unit, a logic control system, a valve control unit, a thyristor valve block unit consisting of two thyristor valve blocks connected in series, and a current detection unit for detecting the current of the thyristor valve blocks, which are connected successively, wherein the thyristor valve block unit is connected with a two-phase power supply arm and a neutral zone of a catenary respectively; the logic control system is connected to one of the thyristor valve blocks according to an identified train travelling position and direction control to supply power for the neutral zone; and when phase change is needed, the logic control system is connected to the other thyristor valve block according to the state switching of thyristor current. According to the control method, neutral-section passing is realized through controlling the two thyristor valve blocks, and when the phase change is performed, if the current of one of the thyristor valve blocks achieves a cross-zero state through detection and judgment, the other thyristor valve block is opened immediately. The ground automatic neutral-section passing device and the control method disclosed by the invention have the advantages of being capable of realizing automatic neutral-section passing of a train under a condition that the power is not cut off, high in reliability, stable in operation, extremely small in power-off dead zone of the neutral zone, and the like.

The invention discloses a single welding and series welding integrity device of solar cell slices. The provided single welding and series welding integrity device of the solar cell slices is good in positioning accuracy and compatible in the solar cell slices with different specifications, and can improve the single welding and series welding production efficiency of the solar cell slices. The device comprises a device rack, the device rack is provided with a feed mechanism, a transmission and positioning mechanism, a welding and temperature control mechanism, a blanking mechanism, a control mechanism and a power supply and control mechanism. According to the single welding and series welding integrity device of the solar cell slices, a full manual welding mode is replaced by a full automatic mechanical welding mode, the production efficiency is remarkably increased, the cell slice failure rate during a welding process is reduced, and the device is suitable for cell slice welding of the solar cells.

The invention relates to a control system of an opening-closing die motor and a push-out motor of a fully-electric injection molding machine, comprising a computer controller, a PLC (Programmable Logic Controller), an opening-closing die push-out driver, the opening-closing die motor and the push-out motor which are mutually connected. The invention also analyzes the motion characteristics and the dynamic characteristics of a toggle lever mechanism of a five-hinge die-closing double-toggle die closing mechanism object, provides a die protection implementation method of a die closing mechanismunder the driving of a fully-electric motor as well as a die closing mechanism control method and a field oriented control algorithm on the basis of a fuzzy adaptive theory from the angle of a control theory, meets the control requirements on three aspects of the die closing force, the speed, and the position, ensures the reliable closing of the molded die and realizes the opening-closing motion of the die and accurate and stably push-out of products from the die; and the designed DSP (Data Signal Processing) driver ensures that the system has stable reliability under the condition of high load and simultaneously improves the disturbance compensation.

The invention discloses a control and protection circuit for a single-lithium battery electric tool and a detection and control method for the control and protection circuit. The control and protection circuit comprises a singlechip power supply circuit, a battery charging and discharging voltage detection circuit, a battery charging and discharging temperature detection circuit, a battery charging control management circuit, a motor switching and commutation control circuit and a working state indication circuit. A singlechip is used as a master control integrated circuit (IC), and is matched with simple peripheral components to realize all functions of protecting and controlling the single-lithium battery electric tool, so that the functions are flexibly designed, circuit complexity is lowered, the number of electronic components is decreased, cost is lowered, and the circuit is high in safety and reliability, and is almost power consumption-free when not working, and has the advantages of environment friendliness, energy saving, lightweight, convenience for use, high operation efficiency, long cycle life of a battery, and the like.

The invention discloses a frequency conversion constant-pressure water supply system and a control method thereof. The frequency conversion constant-pressure water supply system is characterized in that a programmable controller and a frequency converter are connected with a PID (Proportion Integration Differentiation) regulator and control a water pump set; and the PID regulator detects water pressure through a pressure sensor. The control method of the frequency conversion constant-voltage water supply system comprises the following steps of: when water consumption is increased, enhancing the working frequency of a water pump, and accelerating the revolving speed of the water pump; when water consumption is decreased, reducing the working frequency of the water pump, and decelerating the revolving speed of the water pump. The invention regulates the revolving speed of various pumps in the living water supply system by adopting the frequency converter and can realize that one frequency converter simultaneously controls multiple water pumps, realize automatic constant-pressure water supply and additionally set a night small pump operating and fire-fighting function.

The invention relates to a DC de-icing device without a special rectifier transformer and a protection method thereof. The DC de-icing device without the special rectifier transformer comprises a AC-side power supply circuit breaker QF, an isolator K, valve-side current mutual inductors Iva, Ivb and Ivc, a current converter, DC-side voltage mutual inductors Udp and Udn, DC-side current mutual inductors Idp and Idn and DC-side disconnecting links S1, S2, S3 and S4. The DC de-icing device has reasonable design, less investment and low cost. The protection method of the DC de-icing device without the special rectifier transformer can ensure that the DC de-icing device satisfy the safe and rapid de-icing requirements of different roads and can reduce the investment of the DC de-icing device. The DC de-icing device has ingenuous design, excellent performance, low investment, complete protection functions, convenience and practicability.

The invention discloses an LED protecting chip based on PWM shunt, which comprises a PWM shunt switch, a power supply unit, a voltage detecting unit, a temperature detecting unit and a PWM control signal generating unit, wherein the PWM shunt switch is connected with two ends of an LED in parallel, and the current passing through the LED is controlled by controlling the working duty ratio of the PWM shunt switch; the power supply of the chip is taken from the two ends of the LED and supplies power for other units after being processed by the power supply unit; the grounding terminals of the power supply unit, the temperature detecting unit and the PWM control signal generating unit are connected with the cathode of the LED; the voltage detecting unit and the temperature detecting unit respectively detect the voltages at the two ends of the LED and the junction temperature of the LED, and detecting signals output by the voltage detecting unit and the temperature detecting unit are connected with the PWM control signal generating unit; and PWM signals generated by the PWM control signal generating unit are connected with the control terminal of the PWM shunt switch to realize constant temperature, overvoltage and shut-off protection of the LED. The LED protecting chip has the advantages of complete protecting functions, low power loss, simple power supply and easy integration.

The invention discloses a one-frequency one-pump constant pressure water supply control system, which comprises a control unit (6) for controlling the operation of the system and controlling the output frequencies of frequency converters, a human-machine interface (7) for setting parameters of the system and monitoring operational data, the frequency converters (5a, 5b and 5c) for controlling the rotating speeds of water pump motors, and sensing instrument units (1, 3 and 4) connected with the control unit and used for acquiring external feedback information, wherein according to the control system, water pumps (2a, 2b and 2c) in a controlled pump group are matched with the frequency converters and controlled by adopting a common-frequency and common-speed control technology to implement constant pressure water supply.

The present invention discloses a CAN bus electrical control system for automobile windows. The control system comprises a power circuit (1), a CAN (controller area network) bus transceiver (2), a photocoupler (3), a microcontroller (4), a power drive circuit (6), a lifter switch interface circuit (7) and a signal processing circuit (8). The power circuit (1) comprises an accumulator cell and a voltage-stabilizing / isolated power supply. The microcontroller (4) comprises a peripheral interface controller (PIC) and a CAN bus controller. The power drive circuit (6) comprises a current sampling circuit (5). The current sampling circuit (5) is formed by connecting a current (Curr) end of the power drive circuit (6) with the RAO port of the microcontroller (4). The present invention can make wires by which five windows are connected in an automobile reduced to one fifth of the original wires. Meanwhile, the control device has a window anti-pinching function, people can not be pinched and hurt, and the safety properties of the automobile are improved.

This invention relates to a combined control device for integrated instruments and electric appliances composed of a shell with a faulty display window and labels, an electronic control circuit, an intelligent expanding module circuit, a moving and static contactor component with a current sensor at the side of a static contact bridge, an iron core, a coil and a spring, which realizes multiple kinds of protections and fault display by the electronic control circuit and has the function of power saving, a photo electric isolation technology is applied for its high voltage drive and low voltage signal circuit and the I / O expanding interface and an intelligent expansion module are applied to enrich the function of the display and control of the instrument.

The invention provides a safety interlocking protection system used for a powdered coal pressure gasification process. The system comprises: a detection unit (A1), used for detecting abnormal conditions of a powdered coal pressure gasification system (B); a control unit (A2), used for triggering corresponding emergency operations of safety interlocking protection to the powdered coal pressure gasification system (B) according to the detected abnormal conditions detected by the detection unit (A1); an execution unit (A3), used for executing the corresponding emergency operations of safety interlocking protection to the powdered coal pressure gasification system (B) according to triggering of the emergency operations by the control unit (A2); the implementation of the said pulverized coal pressurized gasification system (B) the emergency operation of the safety interlocking protection; and a sequence of event (SOE) recording unit (A4), used for acquiring and recording the abnormal conditions. The safety interlocking protection system provided by the invention has the advantages of high safe reliability, strictly designed program logic, and sequence of event recording function.

The invention relates to a power filter in a power filtering and protection technique, in particular to a transient state and stable state resisting combination interference power filter and a design method thereof. The power filter is characterized by at least comprising protection circuits and filter circuits, wherein the protection circuits are connected with the filter circuits in series; the filter circuits are packaged in a filter shell, which has a nickel-plated surface and is made of cold-rolled steel plates, at a constant temperature through epoxy resin; the filter circuits are type A, type U, type D and type F filter circuits; and the protection circuits are provided with TVS tubes on line-line and line-ground of input ends of the filter circuits respectively to form a line-line and line-ground transient protection module. The transient state and stable state resisting combination interference power filter not only has good common mode and difference mode filtering performance, but also can effectively inhibit surge interferences on a power line, and is particularly suitable for various types of direct current electronic devices having high requirements on CS116.

The invention belongs to the technical field of power equipment, and particularly relates to a reactive power compensation controller for power, in particular to a device of the reactive power compensation controller applied to an electric power line. The reactive power compensation controller for power is a design of the reactive power compensation controller on the basis of an FPGA and DSP unit, and comprises a power supply unit, the FPGA and DSP unit, a key input unit, a liquid crystal display unit, a communication unit and a control unit. Automatic tracking compensation is carried out according to the change condition of a reactive power and a voltage of the line, so that the power factor is improved; the voltage quality is improved; the reactive power transmission flow of a power distribution line is reduced; the reactive power transmission distance of the power distribution line is shortened; and the reactive power compensation controller also has significant characteristics of high reliability, small size, easiness in installation, powerful function and low cost.

The invention discloses a DC (direct current) motor driver which is designed by using a full-analog electronic circuit, a PWM (pulse width modulation) pulse width control chip and a high voltage driving chip. The motor is precisely controlled by using a DC bus protection circuit, a rotary speed feedback and current feedback dual closed-loop PI (Proportional Integral) adjusting circuit, a DC motor back discharging controllable circuit and a pulse width limit controlling circuit. The invention has the following obvious effects: the DC motor driver is reliable in operation, fast in speed regulation response, and strong in anti-interference performance; the motor is exactly controlled by using current feedback dual closed-loop PI adjusting circuit, DC motor back discharging and pulse width limit controlling; and the DC motor driver is perfect in protection function, suitable for a wind power variable paddle system, large in starting torque and is frequently adjusted.

The invention discloses a light-emitting diode (LED) driver for illumination. The LED driver for the illumination comprises an alternating current (AC) / direct current (DC) module and a constant current control module, wherein the AC / DC module adopts an LLC resonant conversion topological structure, and is used for converting alternating current commercial power into direct current; and the constant current control module is connected with the AC / DC module and used for outputting constant current by taking low-voltage direct current as driving voltage to drive an LED light source by the constant current. The LED driver for the illumination can realize the constant current driving of LEDs for the illumination, and simultaneously ensures the safety and reliability of the LEDs.

The invention relates to a self-turnoff component driving protection circuit which particularly comprises positive and negative power supplies, an optical coupler isolating circuit, a control circuit, an anti-saturation circuit, a high power transistor and a composite buffer circuit, wherein a control signal current is subjected to resistance-capacitance filtering and is subsequently input into the anode of a primary light emitting diode of the optical coupler component; an emitter electrode of a secondary phototriode of the optical coupler component is directly connected with the input end of a chip UAA4002 in the control circuit; the positive power supply is connected with the collector electrode of the phototriode through a switch; the positive and negative power supplies are respectively connected with positive and negative power supply pins of the chip UAA4002 and are respectively connected with the collector electrodes of subsequent upper and lower pair tubes, the control circuit is connected with the anti-saturation circuit through a current-limiting resistor; the anti-saturation circuit is connected in parallel between the base electrode and the collector electrode of the high power transistor; and the composite buffer circuit is directly connected in parallel between the collector electrode and the emitter electrode of the high power transistor; thereby a self-turnoff component driving protection circuit which is simple in circuit structure, complete in function, high in reliability, small in switch consumption and rapid in protection response is provided.

The invention mainly discloses an air compressor energy-saving control method. A a frequency conversion starting mode and a power frequency starting mode are set for a motor of an air compressor; and the selection of the two modes are realized by a control circuit which is formed by a contactor. Frequency conversion starting is driven by a transducer; and control signals of the transducer for the motor are determined according to a pressure transmitter on an air reservoir of the air compressor. At the same time, in the method, a distributed control system DCS is adopted; the pressure transmitter is a data acquiring station of the DCS; the transducer is a controlled object of the DCS; and a remote computer or an industrial computer is used as an operator station or an engineer station of the DCS. The method has the characteristics of energy conservation, high control accuracy, low energy consumption and excellent performance.

The invention relates to an oil extractor which includes a combined main frame, an oil extracting rod, a motor, a motor control system, a transmission device and a weight balanced body. The top part of the main frame is provided with a platform. The platform is provided with the motor, a multi-stage decelerator and a double wrap sheave. The motor is connected with the double wrap sheave by the decelerator. A draught steel wire for the weight balancing body led out from the hole on the circle of the double wrap sheave is fixed on a tighter on the weight balanced body, thus forming a weight balanced operation draught system. The oil extracting rod and one decelerator are connected with one end of a suspension rope. The other end of the suspension rope is fixed on a fixing adjuster on the circle of the double wrap sheave to form an oil extracting rod operation draught system. The oil extractor is characterized in that the combined main frame is also provided with directive wheels that can be separated and combined. The directive wheels are arranged between the decelerator and the fixing adjuster. The invention also relates to a control system and a control method of the oil extractor.

The invention discloses a protection setting calculation model for a high-voltage variable-frequency motor. The protection setting calculation model for the high-voltage variable-frequency motor comprises a protection setting calculation model for the high-voltage variable-frequency motor with a phase-shifting transformer and a protection setting calculation model for the high-voltage variable-frequency motor without the phase-shifting transformer, and each of the two protection setting calculation models comprises a long start protection setting calculation model, a current quick-breaking protection setting calculation model, an overcurrent protection setting calculation model, a negative-sequence current protection setting calculation model, an overheat protection setting calculation model, a ground protection setting calculation model and a low-voltage protection setting calculation model; the protection setting calculation model for the high-voltage variable-frequency motor without the phase-shifting transform further comprises a locked-rotor protection setting calculation model. The protection setting calculation model for the high-voltage variable-frequency motor provides reference basis for the protection setting calculation of the high-voltage variable-frequency motor, and therefore, the protection functions are more complete, the protection set value is more reasonable, and the high-voltage frequency converter and the high-voltage motor can be protected to the utmost extent.

The invention discloses a modulation method of a drain electrode power supply modulation chip of a GaN power amplifier, and belongs to the field of chip design. The modulation method of a drain electrode power supply modulation chip of a GaN power amplifier comprises a linear voltage stabilizer, a comparator, a charge pump, a high-power N-channel switch tube, a negative electricity detection control unit, an over-temperature and over-voltage protection unit, a power supply modulation unit and an output rapid discharge channel. On-off of drain electrode input of the GaN power amplifier is controlled by detecting whether negative voltage exists in a grid electrode of the GaN power amplifier or not, and therefore power supply time sequence control over the GaN power amplifier is achieved. On-off of the switch tube is controlled by controlling the gate-source voltage of the power switch tube in the chip, so that pulse modulation of drain electrode power supply of the GaN power amplifier isrealized. The design of a monolithic integrated circuit is adopted, so that the hardware layout area is reduced; while integrating the drain electrode modulation function, the invention also providesa perfect GaN power amplifier protection function, including drain electrode negative pressure enabling and over-temperature and over-voltage protection.

The invention provides a detection circuit for a pressure sensor of an aeroengine. The pressure sensor is electrically connected with an AD converting unit through a sensor loop detection unit and an input instrumentation amplifier respectively. Voltages of four detection resistors of a Wheatstone bridge of the pressure sensor are input to the instrumentation amplifier U2; the instrumentation amplifier U2 transmits a collected voltage value to the AD converting unit; the loop detection unit detects voltage drops of detection points on the four detection resistors of the Wheatstone bridge, the voltage drops are operationally amplified through an operational amplifier on the loop detection unit and then are transmitted to the AD converting unit, and a CPU of an electronic controller of the aeroengine judges faults of the detection points of the Wheatstone bridge of the pressure sensor according to an output voltage value of one loop detection circuit and the voltage obtained after AD conversion through the AD converting unit. The detection circuit has the advantages that the voltage is stable and reliable, output voltage ripples are very small, test accuracy is high, and a millivolt voltage difference value of P3 voltage output is not affected. The actual test shows that the maximum error is not greater than 0.05bar.

The invention discloses a universal precision numerical control support vertical column which mainly comprises a support rod, an outer cylinder sleeve, a lead screw pair, a speed reducer, a numerical control module, an electric plug connector and a base, wherein the outer cylinder sleeve is sleeved outside the support rod, the speed reducer is connected with a ball screw, the numerical control module is used for realizing a numerical control function of a motor, the electric plug connector is connected with the numerical control module, and the base is fixedly connected with the electric plug connector. The support rod is guided by a spline guide shaft, a guide groove in the inner wall of the outer cylinder sleeve and a linear sliding bearing, and the linear sliding bearing is mounted at the upper end of the inner wall of the outer cylinder sleeve. The universal precision numerical control support vertical column is convenient to mount and easy to operate, can be individually used, parts are supported and positioned in the machining and measuring process, the automation degree of the production process is improved, the universal precision numerical control support vertical column modularly designed is used for flexibly, intelligently and digitally supporting three-dimensional curved surface parts in the manufacturing process as a multipoint flexible fixture is mounted, and manufacturing cost and technical difficulty are reduced.

The invention relates to a power supply source of a trigger circuit in a 6 / 10KV soft start device. The power supply source comprises a high-frequency adjustable constant-current supply, a single-turn electric current loop, a coupling mutual inductor and a voltage stabilizing circuit, wherein the high-frequency adjustable constant-current supply sequentially passes through the coupling mutual inductor of each trigger unit to form the high-frequency single-turn electric curent loop; the electrical energy is coupled to each trigger unit, and a stable trigger power supply is obtained through a voltage stabilization circuit. The insulating energy supply problem of the trigger circuit of a thyristor convertor valve series element in a middle and high pressure soft start device and a deflector is solved, the stable power supply and high dielectric strength of the trigger circuit are ensured, the volume is small, the fabrication technology is simple, and the integrated connection is easy to be realized. The invention can be applied to the control of the middle and high pressure soft start and the insulating energy supply of the trigger circuit of the thyristor series element in a high-frequency convertor valve, and the invention is universal and worth popularizing.

The invention belongs to the technical field of conveyor protection devices and particularly relates to a belt conveyor protection device for a coal mine. The belt conveyor protection device for the coal mine comprises a core mine intrinsic safety type programmable logic controller and a signal detection unit connected with the programmable logic controller. The signal detection unit comprises sensors and amplified phones. The sensors comprise the coal piling sensor, the mine smoke sensor, the speed detection sensor, the mine temperature sensor, the mine belt deviation sensor and the mine intrinsic safety type longitudinal tear sensor. The amplified phones comprise the mine intrinsic safety type sudden stop amplified phone, the mine intrinsic safety type pull rope sudden stop amplified phone A and the mine intrinsic safety type pull rope sudden stop amplified phone B. The belt conveyor protection device for the coal mine has the advantages that programming can be conducted on site, the number of input / output points can be increased, work is reliable, operation is convenient, expansion is flexible, the design is flexible, protective functions are complete, display information is abundant, and control interlocking and protection functions of related devices can be achieved reliably and conveniently.

The invention provides an electronic control system for a mining anti-explosion electronic injection diesel locomotive. The electronic control system comprises a diesel locomotive safety protection module, an engine fuel oil injection control module, a power supply control module and a peripheral electrical control module. The power supply control module provides a power supply for the diesel locomotive safety protection module, the engine fuel oil injection control module and the peripheral electrical control module. The engine fuel oil injection control module comprises a diesel engine working condition collecting unit, an actuator and an anti-explosion electric control box. The diesel locomotive safety protection module comprises a safety data collecting unit, a power supply controller, a display unit and a wireless communication unit. An electronic injection diesel engine is used under a mine, the engine can obviously lower emissions and improve operating economical efficiency, and a positive promotion effect on energy conservation, emission reduction and health is achieved. An electronic control unit (ECU) is arranged inside the anti-explosion electric control box. The ECU reasonably controls the oil injection and power output of the engine according to actual working conditions and loads, and thus the economic performance and emission performance are improved.