268results about How to "Guaranteed safe operation" patented technology

The invention discloses a fiber monitoring system. The fiber monitoring system comprises multiple monitoring hosts and a first monitoring server connected with the monitoring hosts, wherein the monitoring hosts comprise monitoring modules, the monitoring modules comprise optical transceivers used for receiving optical signals after transmission through a fiber to be detected, optical signal ports and micro processors, the optical transceivers are connected with the optical signal ports, the optical signal ports are connected with the micro processors through a data/control bus, the micro processors are used for processing the optical signals which are transmitted through the optical signal ports to the micro processors and are used for sending processing results to the first monitoring server, the first monitoring server comprises an alarm module, the alarm module is used for carrying out alarm after receiving the processing results of the micro processors. The fiber monitoring system can reduce and prevent optical cable faults and can position positions of the optical cable faults.

The invention relates to the technical field of ATM intelligent monitoring systems. A module comprises an input module, a video intelligent monitoring server, a monitoring alarm management module and an output module. A video intelligent analysis system to which the video intelligent monitoring server is related particularly refers to the behaviors of automatically detecting an object, tracking the object, and recognizing and analyzing the object. The video intelligent monitoring server relates to an anomalous event analysis system which is combined with a front camera and an upside camera to monitor anomalous and dubious behaviors of objects round an ATM, and simultaneously obtain face information of a suspect and give an alarm in time when an anomalous situation happens.

The present invention pertaining to the field of the transformer field provides a device for monitoring the ground current of an electric power transformer iron chip for solving the problem of monitoring the ground current of the iron chip. The device in the present invention consists of a current transformator, a signal processing circuit, DSP, a current-limiting resistance network and the control circuit thereof. Said current-limiting resistance network includes a group of resistances and four relays. The first resistance, the second resistance and the third resistance are connected to the fouth resistance and the normally closed contacts of the first relay to form a parallel circuit after being connected to the normally closed contacts of the control relay in series and are connected to the transformer iron chip ground loop in series. The windings of the four relays are connected to the output end of the control circuit and the input end of the control circuit is connected to the data output end of DSP. In the present invention, the ground current of an electric power transformer iron chip can not only be monitored in real time, but also be limited in a defined range automatically, thus, the safe running of the electric power transformer can be ensured.

This invention relates to one ring linkage band to prevent poking of safe tyre, wherein, the four corners sides have stretched out axis socket with axis holes inside socket; adjacent unit linkage block socket passes the axis hole connection through axis hole along the ring circle direction and tyre level distributed four corners unit linkage block. This invention has anti-poking hole and exploration property with good flexibility and tyre stable position to ensure the normal using life and safety.

The invention discloses a correlation-considered GEPOPF (Combined Natural Gas and Electric Probabilistic Optimal Power Flow) calculation method. The lowest total operation cost of an interconnection system is used as an optimization control objective; the safety of an electric system and the safety of a natural gas system are considered; the influence of random factors is considered in an optimization process; the correlation among random variables is considered; and through the probabilistic OPF (Optimal Power Flow) calculation, the probability statistics information of the state variables and an objective function is obtained.

The invention discloses a remote monitoring system for an elevator. The remote monitoring system comprises a plurality of elevator control systems, corresponding remote monitoring terminals, an operator server, a remote monitoring server, a short message server and an email server, wherein the remote monitoring server comprises a receiving storage module and an alarm module; the alarm module is connected with the short message server and the email server and is used for sending an alarm short message and an alarm email to a worker through the short message server and the email server respectively when elevator data is alarm information. Compared with the prior art, the remote monitoring system has the characteristics that the remote monitoring terminals can be used for acquiring the elevator data in real time and uploading the elevator data to the remote monitoring server, the remote monitoring server can be used for automatically sending the alarm short message and the alarm email to the worker when the elevator has faults or potential safety hazards, so that the faults or potential safety hazards of the elevator can be discovered and handled by the worker in time, the safety running of the elevator is guaranteed, and the timeliness and reliability of alarming are improved.

The invention provides a non-contact-type rail vehicle obstacle detecting system. According to the work conditions of a vehicle running in different road conditions, sites and natural environments andthe characteristics of obstacles, output data of a plurality of testing sources such as a video shooting device, a laser radar device, an infrared testing device, an ultrasonic testing device and GPSare fused, advantage complementation of the multiple testing devices is achieved, detecting and pre-warning of the obstacles are completed, operation of the vehicle is controlled, safe operation of the rail vehicle is ensured, and detecting of the non-contact-type obstacles is achieved; the accuracy of detecting and pre-warning of the obstacles is improved, and mistaken alarming and alarming missing rates are decreased; and obstacle testing and pre-warning of the on-rail vehicle under all-weather and full-work-conditions are achieved.

The invention relates to a monitoring method and system for leakage at pressure boundary of a primary coolant system in a nuclear power station. The monitoring system comprises a sample control device, a fluorine-18 detection device, a first pressure gauge, a thermometer, a first processor and a first sampling pump, and acquires an atmosphere sample at a pressure boundary area of the primary coolant system so as to measure specific activity of fluorine-18 existing in the atmosphere sample in the form of aerosol and determine whether there is leakage at pressure boundary of the primary coolant system through comparison of the measured specific activity with a preset threshold value. The invention also discloses a monitoring method for leakage at pressure boundary of the primary coolant system in the nuclear power station; according to the method, specific activity of fluorine-18 existing in the atmosphere sample obtained at the pressure boundary area of the primary coolant system is measured and compared with the preset threshold value so as to determine whether there is leakage at pressure boundary of the primary coolant system. The system and method provided in the invention can accurately and reliably monitor whether there is leakage at pressure boundary of the primary coolant system under the condition of meeting related requirements of U.S. Nuclear Regulatory Commission.

The invention discloses a monitoring and early-warning device. The monitoring and early-warning device comprises an information collection module, an early-warning and control module, an alarm module and a local pre-plan database, wherein the information collection module is used for collecting security control information; the early-warning and control module is used for conducting early-warning analysis according to the security control information and pre-stored early-warning rules, when the early-warning condition is met, the early-warning level and the alarm level are determined, and the alarm module is triggered; the alarm module is used for conducting corresponding-level security alarming; and the local pre-plan database is used for storing the early-warning rules. The invention further discloses a monitoring and early-warning method at the same time.

The invention provides a detection method for cathode protection of a directionally drilled and crossed pipeline. According to the detection method, a numerical model of a metro stray current interference and cathode protection system is established by virtue of a boundary element method, the influences of the potential and the electric current density of a magnesium positive electrode, the value of stray current and the parallel length of a metro on a crossed-section cathode protection system are simulated, and thus a preliminary scheme for improving the directionally drilled crossed-section cathode protection system can be correspondingly proposed, so that the cathode protection system of the directionally drilled and crossed pipeline is improved, a cathode protection rule is met, and the safety operation of the pipeline is effectively guaranteed.

The invention relates to an intelligent substation IED (Intelligent Electronic Device) configuration file management and control method based on CRC (Cyclic Redundancy Check) check codes. The method comprises the following steps: connecting all-station IED virtual terminators with a system configuration tool to generate an all-station SCD configuration file including a CRC check code, extracting IED configuration information from the all-station SCD file, and downloading the IED configuration information into a device; powering on a process level IED device, putting the CRC check code into a GOOSE message to be sent, and forwarding the CRC check code to a station level network through an MMS (Multimedia Messaging Service) message after an opposite-end bay level IED receives the message; after the bay level IED device is powered on, transmitting a CRC check code of the bay level IED device to the station level network through the MMS message by the bay level IED device; and receiving the CRC check code from the station level network by a configuration file management module installed in a station level of an intelligent substation, resolving the all-station SCD file, extracting a virtual terminator CRC check code of the IED, and judging whether the two CRC check codes are consistent or not by comparison. Through adoption of the method, checking on whether GOOSE virtual terminator configuration information downloaded into the IED is consistent with corresponding GOOSE virtual terminator configuration information in the all-station SCD file or not can be performed effectively.

A control method for detection of a slab in a heating furnace is used for production of an ultimate slab (such as a slab with the thickness of 120mm on a heating furnace. The control method comprises the following steps: (1) tapping preparation; (2) 120mm slab thickness control setting: If so, a signal is detected by a releasing laser and Step (3) is followed; and if not, Step (5) is followed; (3) releasing laser detection to detect whether there is pulse: if so, Step (4) is followed; and if not, the next step is waited; (4) releasing laser signal maintaining; (5) whether steel tapping condition is satisfied: if so, Step (6) is followed; and if not, the next step is waited; (6) discharge machine motion; (7) whether steel tapping is finished: if so, Step (8) is followed; and if not, the step is returned to Step (6); and (8) releasing laser signal resetting. By the adoption of the control method for detection of slab in the heating furnace, laser detection section is not exceeded, safe operation of equipment is guaranteed, and production efficiency is raised. (Specification of all 120mm slabs refers to the practical heating situation of Baosteel heavy platesand concrete specifications in other similar enterprises can be adjusted and set at will according to practical production technological requirements).

The invention discloses a hybrid uninterruptible power supply system. A generator is connected with a rapid power dump device. A diesel engine is connected with the generator by a clutch. A battery is connected with a bidirectional transducer which is connected with an electric/generator device. The rapid power dump device is connected in series into a path formed by an input power supply and post load equipment. When the input power supply fails or is interrupted, the path formed by the input power supply and the post load equipment is rapidly interrupted. When the input power supply is normal, the input power supply charges the battery by the generator, the electric/generator device and the bidirectional transducer. When the input power supply fails, the battery is discharged, and provides energy for the post load equipment by the bidirectional transducer, the electric/generator device and the generator, and simultaneously, the starting of the diesel engine is finished. After the diesel engine is normally started, the battery stops supplying power, and the diesel engine drives the generator to supply the power to the post load equipment. The hybrid uninterruptible power supply system provided by the invention supplies timely and reliable uninterruptible power to the post load equipment.

The invention discloses a novel tunnel monitoring system. The novel tunnel monitoring system comprises a tunnel monitoring master station layer, an on-site monitoring layer and a communication system. The tunnel monitoring master station layer is a scheduling and commanding center of the tunnel monitoring system and is responsible for remote monitoring, controlling, scheduling and managing of electromechanical equipment of tunnels or tunnel groups along railways. The communication system is the basis of the tunnel monitoring system. The on-site monitoring layer is used for completing on-site data acquisition and execution of various automatic control tasks and is in communication with the tunnel monitoring master station layer so as to complete the remote monitoring and controlling functions. The on-site monitoring layer is connected with the tunnel monitoring master station layer through the communication system. The novel tunnel monitoring system is mainly used for completing centralized monitoring, failure warning and scheduling management of power facilities, illumination/emergency illumination equipment, draught fans, water supply and drainage facilities, fireproof doors and the like in the tunnels. When disasters occur, the novel tunnel monitoring system can be in linkage with other automatic systems, automatic control can be output according to pre-arranged disastrous situation plans, the purpose of disaster prevention and reduction is achieved, and safe running of trains is guaranteed.

The invention belongs to the technical field of air pollution prevention and control equipment, and relates to treatment equipment for VOCs process waste gas in the packaging and printing industry. The exhaust gas containing VOCS enters the adsorption device from the gas collection main pipe, and the treated exhaust gas is discharged through the purification and exhaust pipe; when the adsorption reaches saturation, the system enters the desorption cycle, and the adsorbed VOCs are desorbed by hot air, and desorbed to obtain concentrated VOCs The gas is sent to the first heat exchanger for preheating through the desorption air duct, and then transferred to the oxidation chamber for oxidation. Part of the evacuated purified gas is heated by the second heat exchanger and transferred to the adsorption box for desorption through the second heat exchanger and the desorption hot air pipe, so that the saturated adsorbent can be desorbed and regenerated. The combustion system is installed on the left facade of the oxidation chamber to provide heat for the oxidation chamber. The invention effectively solves the problem of adsorption and reuse of process waste gas discharged from ovens of gravure printing machines and composite machines with large air volume and low VOCs exhaust concentration.

The invention discloses a temperature control type power battery pack which is used for solving the problem of heat dissipation. The temperature control type power battery pack comprises battery cores, temperature equilibrium pieces and a shell, the shell comprises a main shell body, an upper top plate and an end cover, the battery cores are mounted among partition plates in the main shell body, the two sides of the battery cores are filled with thermally-conductive silicone rubber and the temperature equilibrium pieces, and the partition plates are provided with a plurality of vertically-through through holes which serve as cooling channels. A photo-thermal collection plate is mounted at a car roof, a medium inlet/outlet of the photo-thermal collection plate is connected to a cooling fluid outlet and cooling fluid inlets through a liquid pump, and a heat sink and the photo-thermal collection plate are arranged in parallel. The ceramic shell is adopted, good heat conduction and explosion resistance are achieved, thermal expansion and cold shrinkage can be avoided, safe operation of power batteries is guaranteed, and it is guaranteed that in the operation process, the temperature control type power battery pack is always in the safe control range.

The invention discloses a supercritical unit boiler master controller control method based on primary frequency modulation action amplitude. When the primary frequency modulation compensation amount Delta P is within the set amplitude range, the change requirements of loads can be met through boiler heat accumulation, and a boiler master controller will not be regulated; the unit load regulation speed is also considered, if the change rate of the set value of primary frequency modulation preload commands exceeds the set rate range, the boiler master controller will be regulated, air, coal and water action will be achieved, and therefore the operation parameters can be stable, and the load control requirement can be met. The method effectively improves the unit stability when primary frequency modulation fluctuates within a narrow range. By judging the primary frequency modulation action amplitude and the unit load change rate, different reactions to unit load changes can be achieved, the boiler side will not refuse to move or move fast and frequently, air, coal and water regulation can meet the requirements when action is needed, the unit AGC and primary frequency modulation performance can meet the testing requirement of the power grid, and unit safety operation can be guaranteed.

The invention relates to a remote relay protection test system. The remote relay protection test system comprises a protection HMI module for indoor control, a calculation control module and a remote local protection device comprising a relay protection function module and a test module, wherein the calculation control module is connected with relay protection test equipment through the network and transmits protection test control information and outputs test energizing quantity, the local protection device is connected with a protection HMI device through the station level network and transmits the MMS message information, the protection HMI device receives a test instruction of the calculation control module and feeds back the test result, and a remote test on the local protection device is realized. According to the remote relay protection test system, after one-times intelligent equipment shutdown, the remote online test on the local protection device is carried out, the online relay protection function test is realized, compared with outdoor tests, test work is simplified, test efficiency is improved, and the integral reliability of the system is improved.

The invention provides a device and a method for monitoring the tension of a steel wire rope of FBG compression type mine hoisting equipment. The device comprises the steel wire rope, anti-slip wedged rubber rings and a packaging casing, wherein the wedged rubber rings are buckled, clamped and nested on the steel wire rope; an elastic compression column and a U-shaped fixing support fixedly connected with the elastic compression column are arranged inside the packaging casing; the U-shaped fixing support is used for fixing a fixed pulley; FBGs are pasted to the upper end surface and the lower end surface of the elastic compression column; the FBGs are connected onto optical fibers in series; each optical fiber penetrates through an optical fiber lead-out hole to be connected with one end of each optical fiber connector outside the packaging casing; the insides of the optical fiber lead-out holes are sealed with sealant; the other ends of the optical fiber connectors are connected with optical fiber pigtails; the optical fiber pigtails are protected by using armed protection rubber; and the top and the bottom of the packaging casing are fastened by clamp nuts and bolts penetrating through bolt holes. The device is simple in structure and convenient to mount, operate and use, the tension can be monitored on the side and on line, an FBG sensing technology is used, the reliability and the measurement accuracy are high, and the error is smaller.

The invention discloses a patrol inspection method for a power transmission line of a power grid. The patrol inspection method comprises the following steps: a camera takes video images of a power line or a pole in a flying patrol inspection line of an unmanned plane and transmits the video images to onboard communication equipment; the onboard communication equipment communicates with a plurality of ground control consoles to acquire position information of each ground control console, selects one ground control console closest to the unmanned plane at present according to different positions of different ground control consoles, and transmits the video images to the closest ground control console; the closest ground control console receives the video images, and judges damage to the power line and the pole of the power transmission line according to the video images; a background control center communicates with the multiple ground control consoles and is used for displaying the video images and a judgment result of each ground control console. According to the patrol inspection method, the accuracy of judging the damage to the power line and the pole of the power transmission line can be improved, measures can be conveniently taken in time, and safe operation of a power system is guaranteed.

The invention discloses a method for detecting and positioning hot spots of a photovoltaic module based on infrared videos. The method comprises the following steps that S1, image preprocessing is realized through algorithms of threshold segmentation of OTSU, image denoising and the like; S2, all contours of an image are traversed through a contour extraction algorithm, infrared image hot spot detection is completed, and the information of the position of frames where hot spots are placed, the area of the hot spots and the like are calculated; S3, a photovoltaic cell module is subjected to linear segmentation through a line segment detection (Lsd) algorithm, and photovoltaic arrays are marked with numbers; S4, the names of the videos, the rows and columns where the hot spots are placed inthe photovoltaic module constitute three-dimensional coordinates to represent the specific positions of the hot spots, and the hot spot positioning of solar cell modules is achieved. According to themethod, a novel hot spot fault detection system is established by an unmanned aerial vehicle combining with a thermal infrared imager, hot spot detecting and positioning are achieved accurately and efficiently, and safe operation of a photovoltaic power station is guaranteed.

The invention relates to a transformer substation direct-current power supply information management system based on three-stage network architecture. The system comprises a transformer substation direct-current power supply system, wherein a storage battery pack of the power supply system and a direct-current switch power supply are connected with a network data transmission system through a direct-current switch power supply monitoring terminal and then are in communicating connection with a remote monitoring platform. A detecting means efficient and convenient to use is provided for the direct-current power supply of a transformer substation.

The invention provides a method for the safe adsorption and enrichment of gas with low concentration. By a pressure swing adsorption method, a product of the gas is obtained from a desorption stage. In order to ensure the safety in the adsorption process, methane and oxygen gas are adsorbed simultaneously in the adsorption process, and the volume fractions of the methane and the oxygen gas are ensured within a safe range, wherein the volume fraction of the methane is below 5%, and the volume fraction of the oxygen gas is below 9.47%. In the invention, an adsorbent used in an adsorption tower is a mixed adsorbent which is mainly used for adsorbing the methane and the oxygen gas. In the invention, the adsorption pressure is controlled within 0.9MPa. The invention can enrich and utilize the drawn gas with low concentration in a coal mine and can also reduce the discharge of greenhouse gases.

The invention discloses a precise hole forming drilling machine. The precise hole forming drilling machine comprises a machine body. A main shaft box is arranged at the upper portion of the machine body. The bottom of the main shaft box is connected with a main shaft. The main shaft rotates and drives a chuck located below the main shaft. A drill bit is arranged inside the chuck and comprises a head part and a drill handle which are connected with each other. A connecting piece is arranged between the head part and the drill handle. The connecting piece is a circular concave table. Clamping teeth are arranged in the circular concave table and distributed in the circular concave table. The width of the circular concave table ranges from 10 cm to 30 cm. The drill handle is in a cylindrical shape, an anti-skid component is arranged on the drill handle, and the anti-skid component is a corrugated groove. The drill bit is arranged, the connecting piece is arranged to be the circular concave table, and connection between the drill bit and the chuck can be convenient; the clamping teeth are arranged in the circular concave table, the connection between the drill bit and the chuck can be firmer, and the phenomenon of sliding down of the chuck cannot happen. The corrugated anti-skid component is arranged on the drill handle, and the drill bit can be prevented from sliding down in the grabbing process.

The invention discloses a high-temperature superconducting cable temperature measuring system. The system is applied to a high-temperature superconducting cable and a terminal cooling system which areconnected with each other. The system comprises a low-temperature temperature measuring optical fiber, a thermal resistor, an optical fiber optic temperature measurement host machine, a thermal resistor temperature monitor, and a temperature measurement control device; the low-temperature temperature measuring optical fiber is disposed in the high-temperature superconducting cable; the thermal resistor is arranged in the terminal cooling system; the optical fiber optic temperature measurement host machine is used for receiving temperature measurement information from various measurement points of the low-temperature temperature measurement optical fiber; the thermal resistor temperature monitor is used for receiving temperature information from the thermal resistor; the temperature measurement control device receives the temperature measurement information and the temperature information and performs evaluation and judgment according to the temperature measurement information and thetemperature information so as to determine the protection action and protection area of a cable operation control host machine connected with the temperature measurement control device, and control the cable operation control host machine to perform corresponding operation. The system of the invention has the advantages of convenient use and simple structure. With the system adopted, temperature abnormal points along the high-temperature superconducting cable can be accurately monitored and positioned; troubleshooting during the maintenance detection of the superconducting cable can be facilitated; a fault range can be narrowed; and fault processing time can be reduced.

The invention discloses an online monitoring system for work equipment of an intelligent transformer station, and the system comprises a storage battery monitoring unit, a high-voltage power transmission node monitoring unit, a video monitoring unit and a central monitoring platform, wherein the storage battery monitoring unit, the high-voltage power transmission node monitoring unit, the video monitoring unit and the central monitoring platform are connected through a network. The storage battery monitoring unit comprises a battery voltage sensor, a battery current sensor, and a battery temperature sensor. The high-voltage power transmission node monitoring unit comprises a cable temperature sensor, a high-voltage switch cabinet temperature sensor, and a lightning arrester monitor. The central monitoring platform comprises a data analysis module, an alarm module, and a display module. According to the invention, the storage battery monitoring unit carries out the monitoring of the working state of a storage battery, and the high-voltage power transmission node monitoring unit carries out the monitoring of the working state of a high-voltage power transmission node. When the storage battery has a fault or a circuit is overloaded, the system gives an alarm, and a worker can timely carry out the processing according to the alarm information, thereby guaranteeing the safety operation of the intelligent transformer station, and effectively reducing the operation and maintenance cost of the intelligent transformer station.

The invention discloses an insulation oil pipe with inside and outside reinforcing rib structures. The insulation oil pipe comprises an outer pipe body and an inner pipe body. An erosion-resistant coating is arranged on the inner wall of the inner pipe body, a glass wool insulation layer is arranged between the inner surface of the inner pipe body and the erosion-resistant coating, a plurality of inner bosses are additionally arranged on the outer wall of the inner pipe body, and each inner boss penetrates out of the outer surface of the glass wool insulation layer. The outer surface of the outer pipe body is provided with a plurality of arc-shaped steel belts, and six line grooves are uniformly formed in a cavity between the inner pipe body and the outer pipe body. The insulation oil pipe with the inside and outside reinforcing rib structures has the advantages that insulation and erosion-resistant performances of the inner pipe body can be strengthened by the arrangement, six leakage alarm lines with protective shells are arranged between the inner pipe body and the outer pipe body, and safe operation of a heat supply network can be guaranteed; meanwhile, since the inner bosses are additionally arranged on the outer wall of the inner pipe body and the arc-shaped steel belts are arranged on the outer surface of the outer pipe body, service life of the outer pipe body is beneficially prolonged, and cost in maintenance is greatly reduced.

The invention is suitable for the field of million kilowatt level pressurized water reactor nuclear power station control, and provides a method and a system for monitoring heat condition of a generator stator winding of a nuclear power station. The method comprises: acquiring outlet water temperature information of each stator bar included in the generator stator winding; generating a radar map used to show the outlet water temperature information of the stator bars according to the acquired outlet water temperature information of the stator bars; and showing the radar map which is used to show the outlet water temperature information of the stator bars. Through generating the radar map used to show the outlet water temperature information of the stator bars according to the acquired outlet water temperature information of the stator bars, operating personnel of the nuclear power station can rapidly and accurately know about the heat condition of the generator stator winding according to the outlet water temperature information of each stator bar shown in the radar map, and rapidly and accurately detects heat faults of the generator stator winding, thereby ensuring safe operation of electric generators used in the nuclear power station.

The utility model discloses a special refractory electrical power cable, which comprises a plurality of conductors, an insulation layer, a first fiber glass braided layer, an obturator, a copper wire braided layer, a second fiber glass braided layer and a serving. The utility model has the advantages that the safe operation of the electrical power signal can be guaranteed because the electrical power cable is made of high temperature resistant material; the access end of the electrical power cable can be peeled conveniently as the electrical power cable is switched into other circuits, because the second fiber glass braid layer is made of fiberglass material; the good circularity, hand feeling and desired appearance of the electrical power cable are ensured because the obturator is filled in the gap among a plurality of conductors;, the copper wire mesh braided layer can shield the whole electrical power cable from outside disturbances; meanwhile, the utility model discloses a manufacture method for the refractory power cable.

A free piston type combustion engine comprises a cylinder, a connecting rod and an ignition system, wherein the connecting rod is arranged inside the cylinder, and moves to and fro between two opposed combustion chambers of the cylinder; the ignition system comprises an input signal sensor, an ignition actuator and an electronic control unit; the electronic control unit is in electrical connection with the input signal sensor and the ignition actuator so as to receive signal from the input signal sensor and to control the ignition of the ignition actuator; the input signal sensor comprises a Hall sensor and a linear displacement transducer; and the Hall sensor is arranged on the moving line of the connecting rod of the free piston type combustion engine. When the connecting rod passes, the Hall sensor triggers the linear displacement transducer to carry out accurate induction of the displacement of the connecting rod; moreover, when the displacement reaches to a preset value, the electronic control unit controls the ignition actuator to carry out ignition. The free piston type combustion engine can realize real time judgment of the position of the connecting rod so as to accurately control ignition time and prevent the connecting rod from hitting against a cylinder cover and damaging the free piston type combustion engine.