42results about How to "Good practical effect" patented technology

The invention discloses a face identification system, which comprises an image acquisition module for acquiring an image, a face detection module for detecting a face area in the image, a temperature sensing module for detecting the temperature of the corresponding area of the face area in the acquisition area of the image acquisition module, and a face identification module for performing face identification on the face area when the temperature is in a preset range. In the invention, a temperature detection mechanism is added in a face identification process, so that temperature detection, at the same time, can be used for judging if the identified face image is acquired by using a real face in a face identification process. The system and the method have the characteristics of low cost and good practical effect.

The invention discloses a method and device for determining the permeability of a reservoir. The method comprises the following steps of: selecting a rock-core sample of the reservoir and determining the permeability and a nuclear magnetic resonance echo string of the rock-core sample of the reservoir; carrying out inversion on the nuclear magnetic resonance echo string of the rock-core sample of the reservoir to obtain a nuclear magnetic resonance T2 spectrum of the rock-core sample of the reservoir and calculating characteristic parameters of the nuclear magnetic resonance T2 spectrum of the rock-core sample of the reservoir and porosity of the rock-core sample of the reservoir; establishing a multivariate statistical relation of the permeability of the rock-core sample of the reservoir with the characteristic parameters of the nuclear magnetic resonance T2 spectrum of the rock-core sample of the reservoir and the porosity of the rock-core sample of the reservoir; and according to the multivariate statistical relation, the characteristic parameters of the T2 spectrum of the reservoir and the porosity of the reservoir, determining the permeability of the reservoir. The method and device disclosed by the invention is simple, accurate and,reliabl and has obvious actual application effect and provides powerful technical support for oil reservoir classification, productivity prediction and reservoir modeling.

The invention provides an evaluative analysis method for static security check of a large-scaled power grid. The method includes the steps of 1, determining a field device to be evaluatively analyzed and acquiring planned power flow data and historical operational data of the field device; 2, performing day-ahead active analysis and day-ahead line planned power flow deviation analysis according to the planned power flow data and the historical operational data. Compared with the prior art, the method is applicable to generation scheduling, bus load prediction and line planned power flow deviation statistics and is simple and good in practical effect.

The invention belongs to the technical field of mechanical arms and particularly relates to a multi-degree-of-freedom mechanical arm based on steel wire transmission. The multi-degree-of-freedom mechanical arm comprises a first auxiliary finger, a second auxiliary finger, a main finger, a finger supporting plate, finger bending motors, steel wires and the like. The first auxiliary finger and the second auxiliary finger are installed on the finger supporting plate. The main finger is also installed on the finger supporting plate. Each mechanical finger is provided with one bending motor. Each mechanical finger is controlled to bend by pulling the corresponding steel wire through the corresponding bending motor. In addition, the mechanical fingers can swing towards one another manually and be fixed to certain positions to be used. A steel wire adjusting structure is additionally arranged. The steel wire adjusting structure can control the transverse movement amplitudes of the steel wires when the mechanical fingers are controlled by pulling the steel wires through the bending motors, so that the movement stability and the positioning accuracy of the mechanical fingers are further improved, and the steel wire adjusting structure has a good practical effect. In addition, due to the fact that the mechanical fingers are manually controlled to swing, a good finger movement simulating effect is achieved, and the structure is simpler.

The invention relates to the technical field of front window glass bonding of an internal combustion locomotive cab, and in particular relates to a device and method for testing the bonding strength of the front window glass of the internal combustion locomotive cab. The device comprises a test device body, channel steel and a weight, wherein the channel steel is arranged on the test device body; the weight is arranged on the channel steel. The test method comprises the following steps of static load test and impact load test. The device for testing the bonding strength of the front window glass of the internal combustion locomotive cab tests static load and impact load of the front window glass of the cab by simulating the bonding mounting of the front window glass and checks a maximum load value on a bonding part; meanwhile, the design reliability of a joint is checked, and a relatively good practical effect is achieved; a basis is supplied to the design.

The invention discloses a CAN (Controller Area Network) message loss monitoring method comprising the following steps: S100, a network receiving node collects a CAN message from a network sending node; S200, the network receiving node judges whether the collected message is a message which should be received by the network node, the method goes to S300 if the collected message is a message which should be received by the network node, and message processing ends if the collected message is not a message which should be received by the network node; S300, the network receiving node judges whether the message is a periodic message, the method goes to S400 if the message is a periodic message, and message processing ends if the message is not a periodic message; and S400, the network receiving node judges the power supply mode of a sending node of a message to be collected, and adopts different CAN message loss monitoring modes based on different power supply modes of sending nodes. According to the invention, as different CAN message loss monitoring modes are adopted for ECUs (Electronic Control Unit) adopting different power supply modes in a CAN network, the problem of failure caused by false or missing report of CAN message loss is avoided.

The invention relates to a machining method for a hollow shaft. The machining method includes the steps that workblank materials are loaded on a machining center for bright turning and peel removing, and a standard bar is machined; the standard bar is arranged into a milling machine under the oil cooling working condition, and a standard face is milled; under the conditions of oil cooling and inert gas shielding, the bar is vertically placed into the machining center, a datum plane is defined, the center of the bar is hollowed, the outer surface is machined to be in the size with various outer diameter, certain chamfers should be reserved between various outer diameters, and therefore structure stress is prevented; and when the two ends of the bar are sealed, interference fit assemblies should be used, hydraulic assembling is carried out, and precise flaw detection needs to be carried out after assembling is carried out. The condition that damage is not found in the assembling and machining process, and a next working procedure is executed, and consequently, a shaft is likely to be broken is avoided. The machining method has the beneficial effect that the practical effect is good.

A multiuse oil gas energy-saving stove mainly comprises a housing, a heat insulation layer, a fireproof core and a water tank. The multiuse oil gas energy-saving stove is characterized in that the water tank is a functional structure part, and also is a large-area heat exchanger, so a large amount of a raw material can be saved, and a very good practical effect can be possessed. While normal diner cooking and dish frying are carried out through using a boiler in the invention, waste water can be utilized to generate a large amount of hot water and a large amount of boiled water, and also generate a large amount of steam to steam buns, rice and dishes, and the boiler can be used as a soup stock boiler for meat and bone boiling. The waste heat hot water, the boiled water and the steam have no pressures, so no matter how to operate, there will be no safety accidents. The body of the stove and the water tank are arranged in an integrated manner, so a kitchen can be neat and beautiful. The multiuse oil gas energy-saving stove has the advantages of low system manufacturing cost, long life, high reliability, simple production technology, large-scale industrialized production, and wide market prospect.

The invention discloses a fixture for fatigue test of fuselage wall plate, which belongs to the field of aircraft fatigue test design. It includes a clamping section (1), a joint (2), and a corner box (3). The clamping section (1) is set on one end of the joint (2), and the other end of the joint (2) is connected with two corner boxes (3), said any corner box (3) comprises two vertical board surfaces, one of which is fixed on the joint (2), and the other board surfaces of the two corner boxes (3) are parallel to each other and leave There is clearance for clamping the test piece, the clamping width is adapted to the test piece size. The invention enables the fuselage panel test piece to obtain an ideal force transmission effect under the action of tension and compression loads, the damage form of the test piece is closer to reality, and the loading of different fuselage panel sizes can be realized by adjusting the size of the fixture.

The invention discloses a spliced and assembled framework building structure and a construction method thereof. The spliced and assembled framework building structure comprises a bottom layer, a middle layer and a top layer, a plurality of vertical columns are arranged on the bottom layer, and limiting joints are arranged at the upper ends of the vertical columns. The middle layer and the top layer are formed by splicing studdings, connecting beams, middle layer connectors and top layer connectors correspondingly, limiting joints are arranged at the upper ends and the lower ends of the studdings correspondingly, and the left ends and the right ends of the connecting beams are each provided with a butt joint block. The lower ends of the vertical columns of the bottom layer are connected with a foundation, the upper ends of the vertical columns and the lower ends of the studdings are connected through the corresponding middle layer connectors, and the upper ends of the studdings are connected with the corresponding top layer connectors. Connectors between the horizontal positions of the top layer connectors and the middle layer connectors are connected through the connecting beams, and fastening fasteners are arranged on the connecting positions between the connecting beams and the connectors. In total, the spliced and assembled framework building structure is simple in structure, easy to assemble, high in structural strength, good in frame stability and capable of reducing the influence of thermal expansion on the building structure to a certain degree.

The invention discloses a crushing and mixing device for biological medicine raw materials. The crushing and mixing device comprises a box body, feeding openings, a first-stage crushing device, a conic table, a second-stage crushing channel, second-stage crushing devices, a crushing and mixing device body, a disc, a discharging opening, inclined plates and a crushing barrel. The feeding openings are arranged in the left side and the right side of the upper end of the box body. The first-stage crushing device is arranged in the middle of the box body. The crushing barrel is fixedly mounted at the lower end of the top of the box body. The conic table is arranged at the inner bottom of the crushing barrel. Openings are formed in the positions, corresponding to the left side and the right sideof the conic table, of the crushing barrel and communicate with the second-stage crushing channel. The second-stage crushing devices are arranged on the left side and the right side of the second-stage crushing channel. The crushing and mixing device body is fixedly mounted on the outer portion of the middle of the second-stage crushing channel. The disc is fixedly mounted at the lower end of thesecond-stage crushing channel. The position, corresponding to the lower portion of the disc, of the discharging opening is inclined downwards. The crushing and mixing device is excellent in practicaleffect, the raw materials are subjected to multi-stage crushing and are mixed evenly, no accumulation is generated in the crushing process, and the overall structure is relatively stable.

The invention belongs to the technical field of push-pull hooks, and particularly relates to a push-pull hook applied to a hydraulic support. According to the specific technical scheme, the push-pull hook comprises a lower support and rockers connected to the two ends of the lower support, and the rockers can rotate relative to the lower support. The rockers are arranged on the lower support in a sleeving manner and locked through pins. According to the actual production and usage requirements, the installing positions of the rockers and the lower support can be adjusted through the pins to adapt to the hydraulic support. The middle of the connecting frame lower support is connected through a connecting base. Each of the two sides of each connecting frame rocker is provided with a first connecting plate and a second connecting frame, wherein the connecting frame second connecting frame is arranged on the outer side of a first connecting frame. The top ends of the connecting frame rockers are connected with oil cylinders, and the bottoms of cylinder barrels of the oil cylinders are fixed to the rockers. Cylinder rods of the connecting frame oil cylinders externally extend into the base and are connected with a hook body, and the hinge position and the hooking direction of the hook body can be adjusted through the oil cylinders.

The invention belongs to the technical field of drilling bits, and particularly relates to a double-speed variable-torque drill bit for drilling a deep well. The double-speed variable-torque drill bit comprises a drill bit drill rod, a first planetary supporting plate, a drill collar support, drilling heads, a drill collar, a center drill disk, a hydraulic variable-torque device, an inner toothed ring, planetary gears, a second planetary supporting plate and drill collar supporting bearings, wherein the drill bit drill rod is connected with the center drill disk through the hydraulic variable-torque device; during a process that the drilling heads of the center drill disk are in collision with rocks, the hydraulic variable-torque device can adjust the torque and the speed of the center drill disk, so that the service life of the drill bit is prolonged, and the drilling efficiency is increased; in addition, the drilling heads of the drill collar are arranged at the outer side of the center drill disk, and the drill collar is meshed with the drill bit drill rod through the inner toothed ring on the drill collar support and the planetary gear on the first planetary supporting plate and rotates at a lower reverse speed relative to the speed of the drill bit drill rod, so that the inner layer and the outer layer of the drilling heads of the drill collar and the drilling heads of the center drill disk are combined through the design, the crushing efficiency of the rocks is increased through reverse tangential speeds between the drilling heads of the drill collar and the drilling heads of the center drill disk, and the practical effect is better.

The invention relates to the technical field of feed processing, in particular to a cutting device for pig food and feed, comprising a box body, a protective box is arranged on the top surface of the box body, a motor is arranged inside the protective box, and the bottom end of the motor is fixedly connected to There is a sun gear, a planetary gear is arranged on the outside of the sun gear, and the sun gear and the planetary gear are meshed with each other. The upper end faces of the sun gear and the planetary gear are rotatably connected with a planetary carrier, and the planetary gear is fixedly connected with a rotating shaft. The outer side of the rotating shaft is provided with a cutting blade, and the bottom of the rotating shaft is rotatably connected with a fixed ring. In the present invention, the feed can be cut evenly and quickly through the set motor, sun gear, planetary gear, rotating shaft and cutting blade. This design The concept is novel, the design is scientific, and it has huge economic benefits and broad market prospects, and is worth popularizing and using.

The invention discloses an essence adding device used for chrysanthemum flower processing, and relates to the technical field of crop processing. The device includes a supporting seat. A pressurizingshell is disposed above the supporting seat and includes an upper half part and a lower half part. A rotating cylinder is fixedly embedded into the side walls of the upper half part and the lower halfpart. A contact part of the upper and lower half parts is sleeved with a movable sleeve. An external-thread sleeve penetrates the upper side wall of the upper half part fixedly. When liquid essence in a liquid storage tank is to be injected into a processing step, a push-and-pull handle is moved manually to gradually increase pressure in the pressurizing shell so that a piston plate moves upward,and therefore, the liquid essence passes through a corrugated pipe and is finally sprayed out through a sprayer, the adding process of the liquid essence can be continuously operated, the dosage canbe controlled easily, and the device has good practical effects.

The invention relates to the field of coal mine reinforcement, in particular to a grouting reinforcement method for a three-soft-coal-seam large-mining-height working face top slope. The method includes: drilling a straight hole in a coal wall, grouting the straight hole in the coal wall, drilling an oblique hole in the coal wall, grouting the oblique hole in the coal wall, drilling a straight hole in a roof rock layer, grouting the straight hole in the roof rock layer, drilling an oblique hole in the roof rock layer, grouting the oblique hole in the roof rock layer, drilling and grouting in acirculating manner and the like. The method has the advantages that the top slope is reinforced by using the roof and coal wall circulating grouting method, and a good actual effect is obtained; whenthe working face passes an abnormal area fault, various parts of the top slope are integrated by using the grouting reinforcement method, the pressure resistance of the top slope is increased greatly, the top slope is less prone to crushing and falling off, normal stoping can be performed, normal construction can be carried out, the passive situation of the top slope can be reversed fast, the working face can safely pass the fault, and the method plays an important role in working face fault-passing crushing area reinforcement roof support.

The invention belongs to the technical field of mechanical arm drive, and particularly relates to a power drive mechanism of a multi-freedom-degree mechanical arm. The power drive mechanism comprises a reciprocating drive motor, a rocker, a gear drive motor, a grooved wheel, a gear drive motor clamping shaft, an electric conduction block and the like. Clearance rotation of the reciprocating motor is achieved through cooperation of a rotating arm and the grooved wheel. The gear drive motor is driven by a rocker mechanism to do clearance reciprocating movement. A plurality of gear drive mechanisms are arranged on the gear drive motor clamping shaft side by side, the drive motor corresponds to only one gear drive mechanism during each period of clearance standing time of the drive motor, the rotation angles of drive gears are controlled by changing the torque and the rotation angle of the drive motor, and a certain freedom degree of the mechanical arm is controlled in a driving manner. Under the condition that one drive motor is used, the aim of controlling the rotation angles of the multiple gears is achieved through a clearance mechanism and the rocker mechanism, and the mechanical arm with multiple freedom degrees is then controlled; and the structure of the mechanical arm is greatly simplified because the number of drive motors is greatly decreased, and therefore a good practical effect is achieved.

The invention discloses a wall-mounted air filter. The wall-mounted air filter comprises a wall and an inclined plate, the right side of the wall is fixedly connected with the inclined plate, and a pull device is arranged on the upper surface of the inclined plate. According to the wall-mounted air filter, the occupied area of the device is reduced through the mutual cooperation between the structures of the inclined plate, the wall, a box body, a first L-shaped plate, a second L-shaped plate and the like, and the practical effect is better; through the mutual cooperation between the structures of a handle, an arc plate, a first transverse plate, the box body, a first concave plate and the like, the internal cleaning of the filter can be more convenient, the labor force is saved, and the time is shortened; and through the mutual cooperation between the structures such as an activated carbon filter layer, a PM2.5 filter layer, an HEPA filter layer, a fan, a second concave plate and a negative ion generator, the device can better filter air, so that the filtration effect is improved.

The invention discloses a device and a method for monitoring the air quality in a vehicle and prompting a call for a temporary parking vehicle owner, belonging to the device for monitoring the air quality in the vehicle and prompting the call for the vehicle owner. The device consists of a module for monitoring the air quality in the vehicle and a module for prompting the call for the temporary parking vehicle owner, wherein the module for monitoring the air quality in the vehicle consists of a sensor, an A / D (Analog / Digital) converter, a control unit, an LED (Light Emitting Diode) touchable configuration display screen and an alarm, and can be used for monitoring the contents of CO, O2 and volatile organic compounds in the vehicle in real time; when a monitored signal value is greater than a threshold set inside the control unit, the control unit triggers the alarm to remind a driver of adopting reasonable ventilation measures; the module for prompting the call for the temporary parking vehicle owner consists of a human body sensing device, the control unit and the LED touchable configuration display screen; by setting relevant information in advance, when the vehicle owner temporarily parks for leaving, the prompting module can dynamically brush a screen for strikingly displaying contact information, leaving time and the like of the vehicle owner, so that the convenience is brought to contact with the vehicle owner by concerned persons.

The purpose of the present invention is to provide a method to efficiently make flaskless upper and lower molds, to efficiently spray a release agent in a closed space, and to promptly place a core.The invention is a method for making flaskless upper and lower molds that are stacked, comprises the steps of holding a match-plate between one pair of cope and drag flasks that are horizontally positioned, each of them having an sand-filling port for supplying molding sand at its side wall, defining upper and lower molding spaces by inserting upper and lower squeeze-plates to the respective openings of the pair of cope and drag flasks which openings are opposed to the match-plate, putting the pair of cope and drag flasks and the match-plate in a vertical position, and causing the sand-filling port to be placed in upper position, spraying a release agent to the two molding spaces in upper and lower positions which spaces are defined by inserting the upper and lower squeeze-plates to the open ends, supplying molding sand through the sand-filling port to the two upper and lower molding spaces, and squeezing the molding sand in the two upper and lower molding spaces.

The invention discloses a convenient-to-use sewage filtering and recycling device, and the device comprises a mounting pipe; a water inlet pipe and a water outlet pipe are mounted on the mounting pipe; a sealing top cover is detachably mounted at the top end of the mounting pipe, a plurality of fixing rods are uniformly and fixedly mounted on the bottom wall of the sealing top cover, and a mounting frame is jointly and fixedly mounted at the bottom ends of the fixing rods; a metal filter screen is fixedly mounted on the inner side wall of the mounting frame, the water inlet pipe and the water outlet pipe are located at the bottom end and the top end of the metal filter screen respectively, an air cylinder is fixedly mounted on the top wall of the sealing top cover, and a piston rod is fixedly mounted at the output end of the air cylinder. Sewage is pumped into a mounting pipe, filtered impurities can be accumulated at the bottom end of a metal filter screen, an air cylinder is started to drive a piston rod to drive a mounting plate, and after a mounting rod and a conical blocking block move downwards, the impurities accumulated at the bottom end of the metal filter screen can be discharged from the bottom end of the mounting pipe; therefore, substances such as filtered residues can be conveniently cleaned or recycled, the design is reasonable, and the practical effect is good.

The invention belongs to the technical field of spoons, and particularly relates to a medicine feeding spoon for children. The medicine feeding spoon for the children comprises a spoon shell body, anarc-shaped fixing block, a spoon handle, a first gear, a first C-shaped spring, a second gear, a fifth gear, a sixth gear, a seventh gear, an eighth gear, a one-way transfer mechanism, a ninth gear, asecond C-shaped spring, an L-shaped fixing plate, a bi-directional overunning clutch ring and the like, wherein medicine contained in a medicine containing tank in the spoon shell body can not be spilled during the swinging of the spoon shell body, and the action of a pressure difference is used to squeeze the medicine in the medicine containing tank into medicine containing space through an elastic thin film; when the spoon shell body is automatically repositioned to a position not being swung, the medicine in the medicine containing space is squeezed into the medicine containing tank by theelastic thin film. The medicine feeding spoon for the children has the advantages of having simple design and a better practical effect.

The invention relates to a method for manufacturing a bottom shrunk type steel ingot mold. The bottom of the steel ingot mold is shrunk, the inner wall at the bottom shrunk position is provided with two section different reducing openings and two section different opening heights, the reducing opening, close to an outer opening, is a small opening, a reducing large opening is located on the side part of the interior of the small opening, the height H of the large opening is larger than the height h of the small opening, so that too fast melting loss of the shrunk part can be prevented; and a smooth transition is formed between the height H of the large opening and the height h of the small opening. According to the method, the bottom structure of the steel ingot mold is locally changed, sothat the process and material waste and the influence on the rear forging procedure are reduced, meanwhile, the situation that cracks and peeling are generated at the bottom of the steel ingot mold is reduced, and the service life of the steel ingot mold is prolonged. The bottom shrunk type steel ingot mold can be widely applied to occasions of producing polygonal steel ingots and plum-shaped steel ingots, the steel ingot mold does not change the overall shape of the steel ingot, the operation is convenient, and the steel ingot mold has an ideal practical effect.

The invention discloses a treatment method of a circulating fluidized bed boiler multipoint bed temperature signal. The method comprises the steps that firstly, according to the distribution law of bed temperature measuring point measuring values and all bed temperature signal average value deviation, the bed temperature measuring points are divided into the high temperature area, the normal temperature area and the low temperate area, the bed temperature measuring points in each temperature area are grouped, bed temperature signals of the bed temperature measuring points in each set are subject to three-selection treatment, the represented bed temperature signal of the group is obtained, the represented bed temperature signals of the classification same temperature areas are subject to average value calculation, the average bed temperature signal of each temperature area is obtained, the average bed temperature signals of the three temperature areas are subject to weighing average treatment finally, and an optimized calculation bed temperature is obtained. The traditional average value method and the median method are organically combined, the advantages of the average value method and the median method are obtained, the characteristics that under the high load, the local high bed temperature signal changes are subject to priority reflecting, and under the low load, the locallow bed temperature signal changes are subject to priority reflecting are achieved, and the control quality of a circulating fluidized bed boiler can be effectively improved.

The present invention discloses an agricultural greenhouse harmful gas distributed measurement and control method based on agricultural automation. The method concretely comprises the following stepsof: establishing a system, and establishing monitoring nodes and a ventilation control subsystem; and communicating the monitoring nodes and the ventilation control subsystem, wherein the monitoring nodes employ distributed structures and are installed at different typical positions to perform multi-point distributed measurement of harmful gas concentration through a sensor array and send data andidentification codes of each node to a ventilator control system through a RFID network at the same time, and a main controller of the ventilator control system performs statistics analysis of data of each node. The method provided by the invention can achieve distributed high-precision multi-point detection of harmful gas concentration in the greenhouse, can effectively execute circuit automaticregulation of a ventilator to timely exhaust the harmful gas and has a good utility effect.

The invention relates to a crop straw forming equipment, which includes an inlet and a packaging device. A heating chamber is arranged under the inlet, a plasma rotary mechanism is arranged on one side of the heating chamber, and an extrusion is arranged on one side of the plasma rotary mechanism. mechanism, and the extruding mechanism is connected with the packaging device through a pipeline. The invention has the advantages of simple structure, stability and reliability, and good practical effect.

The invention relates to a water inlet valve pipe which comprises a water inlet pipe and an outer pipe; a plurality of axially distributed positioning convex rings are formed on the outer surface of the water inlet pipe, and a positioning clamping groove is formed between every two adjacent positioning convex rings; the water inlet pipe is sleeved with the outer pipe, a mounting shell extending in the radial direction is formed on the outer pipe, a reset spring and a positioning plate are arranged in an inner cavity of the mounting shell, one end of the reset spring abuts against an end cover of the mounting shell, and the other end of the reset spring abuts against the positioning plate; and the positioning plate is connected with the positioning clamping groove in a clamping mode through the elastic effect of the reset spring, and the positioning plate is provided with a shifting rod which extends out of the mounting shell and is used for shifting the positioning plate to move. The water inlet valve pipe can be effectively adjusted in the height direction, especially after being used in cooperation with a water control valve, the water inlet valve pipe is convenient to install, and the installation efficiency of occasions such as a water storage tank or a flush toilet or a swimming pool can be effectively improved.

The invention discloses a fortification and fortification-withdrawing control method based on safety product. A micro processor conducts the following steps: receiving the signal acquired from a firstcamera and a infrared prober in real time, receiving a door-opening information to judge the door to open when a related personnel provides the door-opening information, receiving the job certificateinformation to control the door to open when the related personnel holds the job certificate, meanwhile, outputting a controlling signal to a second camera and controlling the second camera to perform fortification-withdrawing, receiving the intrusion information to forbid the door to open when the infrared prober can not detect the job certificate information and outputs the intrusion information to the micro processor, meanwhile, outputting the controlling signal to the second camera and controlling the second camera to perform fortification. According to the fortification and fortification-withdrawing control method provided by the invention, the fortification and fortification-withdrawing controlling on the safety product for people is convenient, the judgement whether the personnel is staff or related outside staff though the holding of the certificate with related PIN (personal identification number) can be realized. The method has the advantages of simple structure and good practical effect.

The invention relates to a production method capable of prolonging the service life of a lining of an electric furnace for casting. The production method comprises the following steps that (1) new furnace slag is formed, lime is added into the electric furnace before steel is discharged out of the electric furnace for slag formation, the adding amount of the lime is controlled to be 6-10 kilograms per ton, the temperature in the electric furnace is controlled to be over 1650 DEG C, and the alkalinity of the furnace slag is controlled to be 3.5-5; and (2) a slag surface is swept, sweeping is conducted on the slag surface by means of a furnace door oxygen gun so that the formed new slag can be evenly hung on the inner surface of the furnace wall, and the pressure of oxygen during sweeping is controlled to be 1.2-1.6 MPa, so that the function of protecting the lining of the electric furnace for casting is achieved. The production method has the advantages that operation is simple, and the practical effect is good; the service life of the lining of the electric furnace for casting can be effectively prolonged to reach over 70 times, and the service life of the lining of the electric furnace for casting is twice that of a lining of an existing electric furnace.