68results about How to "No mechanical loss" patented technology

The invention discloses a small-sized ultra-high-speed motor test loading device which comprises a base, a motor, an eddy-current disc, an exciting winding, an exciting sleeve, a support and a dynamometer load. The motor is arranged on the base and is connected with the eddy-current disc, the eddy-current disc is nested in the exciting sleeve, the eddy-current disc and the exciting sleeve are coaxially and parallelly arranged and transfer power through magnetic field coupling, the exciting sleeve is winded with the exciting winding, the exciting winding is connected with a voltage-adjustable direct-current power supply to produce exciting current, the exciting current produces an even unipolar magnetic field in the exciting sleeve, the magnetic field senses current in the rotary eddy-current disc to produce brake torque, a torque measurement system measures the brake torque, and the small-sized ultra-high-speed motor test loading device is provided with a rotation speed detection system for measuring the rotation speed of the motor or the eddy-current disc. The small-sized ultra-high-speed motor test loading device is simple in structure, small in rotational inertia, almost free of additional radial force, convenient to install and capable of reducing vibration and noise and is suitable for performance testing of small-sized high-speed motors, and a dynamometer rotor is free of friction loss.

The invention discloses an alternating current / direct current charging control guiding circuit of an electric vehicle conduction charging system and a control method of the circuit. The alternating current / direct current charging control guiding circuit includes four parts including a power source waking and self-locking circuit, a CC / CC2 resistance detection circuit, a CP signal processing circuit and a microcontroller. The alternating current / direct current charging control guiding circuit has the advantages that the stand-by power consumption is low, delayed power failure can be achieved, an alternating current / direct current charging control guidance mode and a normal vehicle running guidance mode are both compatible, there are no mechanical contact points, and the service life is long. The provided alternating current / direct current charging control guiding circuit of the conduction charging system is usually integrated in a battery management system or a vehicle control unit. Switch devices adopted in the design are all MOS components, mechanical losses are avoided, the service life of a switch is prolonged, and the reliability of the alternating current / direct current charging control guiding circuit is improved.

The invention discloses a transmission line patrol system based on optical transmission. The transmission line patrol system comprises an on-pole device and a vehicle-mounted device. The on-pole device is arranged on a line pole tower and used for acquiring data of the temperature, images and the environment of a line and the line pole tower. The vehicle-mounted device is arranged on a line patrol vehicle and used for receiving data information acquired by the on-pole device and supplying energy to the on-pole device through lasers. The on-pole device sends the acquired data information to the vehicle-mounted device in a wireless optical communication mode, and the vehicle-mounted device transmits the received data information to a processing terminal for processing. Through laser energy supply and optical communication, electromagnetic interference is greatly reduced, battery energy supply is not needed, electricity does not need to be taken from the transmission line, and therefore the system is not in electrical connection with equipment on the detected line; the system is safer and more reliable, the cycle of overhaul and maintenance can be greatly prolonged, and signal confidentiality is high.

The invention provides an active mass magnetic activation vibration controlling device which comprises a mass block and a control unit, wherein a DC exciting coil is arranged at the bottom portion ofthe mass block as the secondary coil of the linear motor, a sliding rail bed is arranged beneath the mass block, a long stator winding is arranged in the sliding rail bed as the primary coil of the linear motor. The advantages of the invention are sensitive reaction, simple structure, low noise and high degree of precision.

The invention relates to a slide capacitance induced water level and water flow accurate detection method and a detection device. The device comprises an induction panel and a circuit structure, wherein the induction panel comprises an insulation housing, a flexible PCB (Printed Circuit Board), a TOUCH chip, and a water level and water flow capacitance induction disc; the insulation housing is arranged vertically upward, wherein the flexible PCB is tightly adhered to the inner wall of the insulation housing; the TOUCH chip is arranged on the inner wall of the insulation housing; and the water level and water flow capacitance induction disc is sealed in the insulation housing, wherein the TOUCH chip continuously emits alternating-current pulse signals to measure change in capacitance on the induction disc and monitor whether water approaches the water level and water flow capacitance induction disc. The slide capacitance induced water level and water flow accurate detection device provided by the invention has the advantages of simple structure, low cost, low failure rate, high safety coefficient and the like; the water level and water flow capacitance induction disc detects corresponding changes of water level and water flow, and then a singlechip drives to display to indicate current state of water level and water flow, so that a consumer can clearly know the current water level and water flow of a water tank during the process of using a similar product with a water filling tank.

The invention relates to a device and a method for producing alpha-semi-hydrated gypsum by utilizing industrial by-product gypsum by means of pneumatic autoclave. The device comprises a vertical type autoclaved kettle, a steam pumping system and a high pressure pneumatic system, wherein high-pressure hot air passes through an exhaustion device to blow materials in the vertical type autoclaved kettle upwards by utilizing the high pressure pneumatic system, so that the materials are in a loosening state and an exhaustion channel is supplied for water vapor of the materials; steam can be introduced intermittently into a pneumatic pipe in an autoclaving process so as to prevent the compaction of desulfurization gypsum inside the autoclaved kettle. Water vapor is pumped away by utilizing the steam pumping system so that the aim of drying the alpha-semi-hydrated gypsum produced by means of autoclaving is fulfilled. According to the device and the method, the advantages of a hydrothermal method and the vertical type autoclaved kettle are combined, the industrial by-product gypsum belonging to the industrial wastes can be comprehensively utilized, and the wastes are turned into treasures; a mechanical part of the device is eliminated, so that the power-saving property and mechanical loss are realized, and the investment of the whole production line is reduced.

The invention provides a permanent magnet synchronous motor which comprises a stator iron core, a middle rotor, an adjusting rotor, an inner rotor and a magnetic suspension bearing. The stator iron core is provided with a first toothed groove. A drive winding and a control winding are disposed in the first toothed groove. A certain air gap is formed between the middle rotor and each first tooth. The middle rotor comprises second teeth provided with first permanent magnets. The N pole of each first permanent magnet point outwardly, and the S pole thereof points inwardly. The adjusting rotor is located on the inner side of the middle rotor. A certain air gap is formed between the middle rotor and the adjusting rotor. The adjusting rotor comprises third teeth. The bottom end of each third tooth is opposite to the inner rotor. Adjusting rotor windings are disposed among the third teeth. The inner rotor is located on the inner side of the middle rotor. A certain air gap is formed between the middle rotor and the inner rotor. The inner rotor comprises fourth teeth provided with second permanent magnets. By the permanent magnet synchronous motor, the problems that the power system of a hybrid power car in the prior art needs to be equipped with two motors, cost of the whole car is high, and the power system occupies large space are solved.

The invention discloses a method for a preparing 4-hydroxyl tetrahydropyran derivative with optical activity through enzymatic transesterification. The method comprises the following steps: adding a mixture of a racemic 4-hydroxyl tetrahydropyran derivative and an acyl donor with the molar ratio of 1:1 to 1:4 into an organic solvent; adding magnetic immobilized lipase; reacting under stirring at the temperature of 10 to 60 DEG C for 2 to 36 hours, wherein the relative using amount of the magnetic immobilized lipase and the racemic 4-hydroxyl tetrahydropyran derivative is controlled to be from 1mg:1ml to 100mg:1ml; separating out the immobilized enzyme from the magnetic field and stopping reaction; and performing column chromatographic separation to obtain the 4-hydroxyl tetrahydropyran derivative with optical activity and acetic acid ester of the derivative. The method is realized by utilizing high activity, high selectivity and high stability of the magnetic immobilized enzyme; the immobilized enzyme is separated quickly under the action of the magnetic field; mechanical loss is avoided; high-efficiency recycling is realized; the catalytic efficiency is high; the cost is low; and the process is simple and quick.

The invention relates to a high-efficiency short-stroke linear reciprocating oscillation motor, belonging to the technical field of motors. The invention solves the problem that the traditional short-stroke linear reciprocating oscillation motor using a support leaf spring as a motor rotor support and elasticity restoring force generator has low system efficiency. The high-efficiency short-stroke linear reciprocating oscillation motor comprises a motor shell, two end covers, a motor stator, a motor rotor, two magnetic power accumulators and two linear magnetic bearings. Two power accumulator stators are respectively located on the axial inner side surface at the through-hole end in the centre of two end covers; two power accumulator rotors are respectively fixed on two axial end surfaces of the motor rotor; both the power accumulator stator and the power accumulator rotor are annular rare earth permanent magnets or axial symmetry type rare earth permanent magnets; both the bearing stator and the bearing rotor are cylindrical rare earth permanent magnets; two bearing stators are respectively sleeved and fixed on the inner surfaces of the central through holes of two end covers; two bearing rotors are respectively sleeved at both ends of an output shaft of the motor rotor; and the bearing stator is arranged opposite to the bearing rotor. The invention is suitable for a linear reciprocating oscillation motor.

The present invention relates to a kind of aerating apparatus for making organic waste water and lake water undergo the process of aerobic biological treatment, in particular, it is a horizontal oscillation jet flow mixing integrated equipment. It includes the following several portions: suction chamber, air drain communicated with said suction chamber, high-pressure pump and mixing pipe, in which the mixing pipe is horizontally mounted, and the outlet end of said mixing pipe is equipped with an oscillation device.

The invention is applicable to the field of micro-electronics and provides a small height detection method and a small height detection system. The system comprises a digital camera and an array light source device, wherein an inclined angle is formed between the array light source device and the surface of a to-be-detected object; the array light source device sequentially comprises a high-brightness light source, a parallel light lens and a high resolution liquid crystal screen from interior to exterior; and the array light source device also comprises a liquid crystal drive circuit. The technical scheme provided by the invention has the advantages of low cost and fast detection.

The invention discloses a hybrid electric vehicle LCD instrument device based on a CAN. A single chip microcomputer is adopted by the device to serve as a core control unit, and various kinds of information of a hybrid electric vehicle in the running process can be obtained through a CAN bus network; an LCD display module is used for digital display of information, and a non-contact type infrared induction module is adopted to control page switching of the LCD display module and periodically emits and receives infrared rays through an infrared emission tube and an infrared receiving tube; when fingers are not in the induction area, the infrared rays are transmitted through glass, and the infrared receiving tube does not receive infrared signals; when the fingers are in the induction area, the infrared rays are reflected through the glass, and the infrared receiving tube receives the infrared signals; and the control unit judges whether page turning is needed or not through the signals of the infrared receiving tube. The device is integrated with an external brightness induction module, backlight of the LCD display module is automatically adjusted, and the clear and gentle vision effect is achieved.

The invention relates to a preparation method of reversible covalent cross-linked reprocessable epoxy resin containing thioester bonds. The preparation method comprises the following steps: firstly, synthesizing an epoxy curing agent containing a reversible covalent bond-thioester bond by utilizing acid anhydride and mercaptocarboxylic acid, then mixing the epoxy curing agent with an epoxy monomer, and curing epoxy at a specific temperature to obtain the epoxy resin capable of being reprocessed for multiple times. The epoxy curing agent is simple to synthesize, easy to operate and wide in rawmaterial source. And the synthesized epoxy curing agent can be used for various epoxy monomers. Because the dynamic covalent bond thioester bond can be subjected to dynamic exchange reaction, the cured epoxy resin not only has excellent mechanical properties, but also has excellent reprocessing properties.

The invention discloses a novel self-cooling integrated LED lamp which is mainly composed of a supporting frame, a synthetic jet device and an integrated LED chip. The synthetic jet device and the integrated LED chip are installed on the supporting frame; the synthetic jet device is fixed on the upper portion of the supporting frame, the integrated LED chip is fixed at the bottom of the supporting frame, and a cavity is formed between the synthetic jet device and the integrated LED chip. The additionally arranged synthetic jet device can provide active cooling for the integrated LED chip, so the size of the LED lamp is reduced and the cooling efficiency of the LED lamp is improved.

The invention relates to a clamp and a clamping method thereof used for testing dynamic mechanical properties, and particularly relates to a clamp and a clamping method thereof for testing dynamic mechanical properties of short fiber samples, minimal particle samples, colloidal samples and thick samples. The objective of the invention is to solve a technical problem that the dynamic mechanical properties of the short fiber samples, the minimal particle samples, the colloidal samples and the thick samples cannot be directly tested by test methods at present. The clamp is prepared by a metal sheet. A small groove is nicked, along the centerline, in a surface of the metal sheet to form the clamp. The clamping method comprises steps of folding the clamp in half along the small groove to form an angle of 60-90 degrees, uniformly spreading a sample in the inner side of the clamp, and folding to complete the clamping process. By utilization of the clamp and the clamping method, direct testing of the dynamic mechanical properties of the short fiber samples, the minimal particle samples, the colloidal samples and the thick samples is simple in operation without the need of preparing self-supporting test pieces. The clamp and the clamping method belong to the fields of clamps and clamping methods thereof for testing dynamic mechanical properties of test pieces which have no self-supporting capability.

The invention discloses a peripherally-actuated auxiliary moment generator for an under-actuated system and belongs to electromagnetic moment type moment generators. The peripherally-actuated auxiliary moment generator for the under-actuated system is characterized by comprising a shell, a magnet set, an armature winding, a front end cover, a rear end cover, a motor, a motor support and a load, wherein the shell is in matched connection with the under-actuated system through a gear, a cam or an impeller. By the aid of the electromagnetic induction principle, the motor is used for actuating the armature winding to rotate in the magnetic field so as to generate the electromagnetic torque opposite to the motor actuating direction, and the magnet set is subjected to the reactive electromagnetic torque opposite to and as equal as the electromagnetic torque of the armature winding so as to provide required moment for the under-actuated system. Particularly, the moment provided by the device is in direct proportion to the velocity, so that control difficulty is remarkably reduced. The peripherally-actuated auxiliary moment generator for the under-actuated system is simple and reliable in design and clear in structure, can be applied to attitude adjustment of one-wheeled robots, satellites, space shuttles and missiles and can also be applied to the fields of overcoming of reactive torque of helicopters or butterfly air vehicles.

The invention relates to a hydraulic soft switching transformer capable of realizing pressure rise and fall. The hydraulic soft switching transformer consists of high-speed switching valves, a one-way valve, a spring energy accumulator, an inertia tube and an inflatable energy accumulator. Rise and fall of load pressure can be realized through a hydraulic loop consisting of the high-speed switching valves, the inflatable energy accumulator and the inertia tube, and the rise and fall magnitude is determined by the duty ratio of the high-speed switching valves for adjustment. A soft switch consisting of the one-way valve and the spring energy accumulator is introduced, so that the pressure difference of a valve port before the high-speed switching valves are opened can be reduced to the maximum extent, and the throttling loss is reduced. Meanwhile, on the basis, the four high-speed switching valves can be softly opened by setting a reverse circulation time sequence, so that higher transformation efficiency is achieved, the requirement of a multi-load actuator is met, and the transmission efficiency of a hydraulic system is improved.

The invention discloses a water purifier and a water purification method based on a dielectrophoresis nano-membrane and electrodialysis. In the purifier, the first side of a negative dielectrophoresispurification device is communicated with an inlet pump to introduce water, the pore section of a nano-porous membrane is two symmetrical arcs, the pore diameter is gradually reduced from top to bottom, water from the inlet pump flows through the nano-porous membrane under the action of gravity and the action of a non-uniform electric field in order to be purified, a plurality of anionic membranesare arranged between a first electrode and a second electrode, and anions in the water penetrate through the anionic membranes and cations cannot penetrate through the anionic membranes under the action of an electric field generated by the electrified first electrode and second electrode; and the plurality of cationic membranes are arranged between the first electrode and the second electrode, each cationic membrane and each anionic membrane are alternately arranged, when an electrodialysis device works, a three-way valve controls a drain outlet to be closed, a fourth outlet is opened to collect desalted water, and an electrode reversing device is arranged in a circuit of the electrodialysis device and a power supply to replace positive and negative polarities of the first electrode andthe second electrode.

The invention discloses a liquid type semiconductor heat exchanger and belongs to the technical field of heat exchange. The liquid type semiconductor heat exchanger comprises a housing, a heat exchange device arranged in the housing and driving devices electrically connected with the heat exchange device, wherein the heat exchange device comprises semiconductor thermoelectric sheets, a plate typeliquid double-side heat exchanger and plate type liquid single-side heat exchangers; the plate type liquid double-side heat exchanger is located in the middle of the heat exchange device; the semiconductor thermoelectric sheets and the plate type liquid single-side heat exchangers are successively arranged on two sides of the plate type liquid double-side heat exchanger from inside to outside. Through the liquid type semiconductor heat exchanger, the heat absorption area is reduced; the heat releasing area is increased; the heating efficiency of the semiconductor thermoelectric sheets is greater than 1 and is fully used; the liquid type semiconductor heat exchanger can be used as a core of an air energy water heater and can also be used as a core of a heating and cooling air conditioner.

The invention relates to the field of infrared communication, in particular to a method and system for triggering keys based on infrared communication. The method includes the steps that an infrared transmission module is controlled to send key scanning data through a control module; key operation is carried out through a communication port of the infrared transmission module to enable an infraredreceiving module to receive the key scanning data sent by the infrared transmission module; and the duration of the key operation is determined according to the received key scanning data through thecontrol module, and a corresponding control instruction is output according to the time of the key operation to trigger a corresponding function. The method and system have the following beneficial effects that only the key operation is needed to trigger different functions without the need for mechanical keys or Hall and other devices, the cost is reduced, the key operation has no mechanical loss, the consistency of a device structure is not destroyed, and the protection ability of a product can be improved.

The invention provides a fault judgment method, a magnetic levitation compressor, an air-conditioning unit and a readable storage medium. The fault judgment method comprises the steps of detecting a movement signal of a rotor through a position sensor; and determining the movement state of the rotor in response to the movement signal. Different motion signals output by the position sensor can reflect whether the rotor starts to rotate or whether the rotation speed is normal, thereby determining in time whether the rotation state of the rotor is abnormal. When detecting that the rotation stateof the rotor is abnormal, the user can be promptly reminded to deal with the abnormal state to increase the processing speed of the abnormal state of the magnetic levitation compressor and avoid irreversible damage to the magnetic levitation compressor.

The invention discloses an ultrasonic cleaning apparatus and a method of cleaning an MBR (Membrane Bio-Reactor) ultrafiltration membrane by using the same. The ultrasonic cleaning apparatus comprises a control module and a cleaning module; the cleaning module comprises a reaction pool and at least one ultrasonic vibration plate on the inner wall of the reaction pool; the control module comprises a computer, a controller and an ultrasonic wave generator which are in successive connection; and the ultrasonic wave generator is connected with at least one ultrasonic vibration plate. By utilizing the mechanical vibration and microturbulence phenomenon generated by ultrasonic wave in water, pollution substances are facilitated to be disengaged from the membrane surface; and the ultrasonic cleaning effect is intermittently applied to an anaerobic MBR on line, the pollution development speed of the ultrafilter membrane of the anaerobic MBR is slow. The cleaning method is simple to operate, low in power consumption, and free of mechanical loss on the membrane, and helps to prolong the service life of the membrane.

The invention discloses a double-magnetic-circuit magnetism adjusting type axial permanent magnet motor. The motor comprises a first rotor, a first magnetism adjusting ring, a first stator, an inner rotor, a second stator, a second magnetism adjusting ring and a second rotor which are coaxially installed. The first rotor and the second rotor each comprise a rotor yoke and a Halbach permanent magnet array arranged on the inner side of the rotor yoke along the circumference. The double magnetic circuits are respectively a magnetic field loop formed among the outer rotor, the magnetism adjustingrings, the stators and the inner rotor and a magnetic field loop formed among the outer rotor, the magnetism adjusting rings and the stators, and the magnetism adjusting performance is enhanced. Magnetic adjusting teeth are additionally arranged, and the double magnetic circuits are adjusted through the magnetic adjusting teeth. Fixing supports of the magnetism adjusting teeth comprise an inner layer and an outer layer arranged along the circumference, and the structure is light and firmer. Because the fixing supports are additionally arranged, there is a larger heat dissipation area for the heat on the magnetism adjusting rings, and cooling is easier.

The invention provides a preparation method for extruding a composite profile from a bamboo fiber composition, and belongs to the technical field of bamboo fiber composite profile preparation. The method comprises the step S2 of screening machining: using a screening device for screening mixed particles. The screening device comprises a first-stage splicing screening barrel, a second-stage splicing screening pipe and an excess material guiding splicing pipe which are distributed in a concentric circle shape, the first-stage splicing screening barrel, the second-stage splicing screening pipe and the excess material guiding splicing pipe are sequentially distributed from inside to outside and each comprise an upper part and a lower part, a zero-contact supplement assembly is arranged between the upper part and the lower part, and an automatic screening acceleration mechanism is arranged in the first-stage splicing screening barrel. According to the preparation method for extruding the composite profile from the bamboo fiber composition, the quality of the fiber composite profile product can be improved, meanwhile, the preparation efficiency of the bamboo fiber composite profile can be improved, and the development of the production and preparation processing industry of the bamboo fiber composite profile product is effectively promoted.

The invention discloses a gas compressor and an overpressure controller. The invention provides two types of equipment for manufacturing compressed gas, which can reduce the manufacturing cost and use cost of a booster engine system and is favorable for wide use. A full-automatic overpressure switch is designed for a solar air compressor. An inner fuel tank comprises a gas storage tank, a gas inlet pipe and an igniter and is characterized in that liquid is contained in the gas storage tank; a floating plate is arranged on the liquid surface; the gas inlet pipe is connected to the floating plate; the igniter is arranged on the floating plate; and the outlet of the gas inlet pipe is below the liquid surface. In the inner fuel tank, an engine is embedded in a gas tank and bubbles are utilized to isolate gases before and after burning, therefore the engine structure is simplified, the raw materials are saved and the manufacturing cost is reduced. The solar air compressor compresses air into the gas storage tank by using the principle that gas expands when being heated; and as the air is not mechanically compressed, the solar air compressor has the advantages of simple structure, low cost and low price of manufactured compressed air, and facilitates the popularization of machinery powered by compressed gas.

The invention discloses an energy-saving pump driven by low-grade heat sources and based on phase change of working media and a pump unit. The energy-saving pump comprises a pump casing, a heat-insulation film, a condensation pipe and a heating coil pipe. The heat-insulation film is positioned in the pump casing, the inside of the pump casing is divided into a power cavity and a liquid delivery cavity by the heat-insulation film, and the liquid delivery cavity is communicated with a one-way liquid inlet pipe and a one-way liquid outlet pipe respectively; the condensation pipe is positioned in the liquid delivery cavity, and an inlet and an outlet of the condensation pipe are communicated with the power cavity via external circulation of the pump; the heating coil pipe is positioned in the power cavity. The pump unit comprises at least two energy-saving pumps. The energy-saving pump and the pump unit have the advantages that the power cavity of the energy-saving pump is expanded and then squeezes the liquid delivery cavity, so that to-be-delivered liquid can flow out of the energy-saving pump, and functions of a water pump can be realized; the area of the heat-insulation film is sufficiently large, so that elastic force can be prevented from being generated in expansion and contraction procedures, and mechanical loss can be prevented; the energy-saving pump is low in energy consumption, pollution and cost and suitable to be popularized on markets; the pump unit comprises the energy-saving pumps, and accordingly the to-be-delivered liquid can be delivered to high positions by the pump unit.

The invention discloses an impeller with an adjustable impeller diameter for a centrifugal pump. The impeller comprises a fixing impeller, an impeller center cavity, strip-shaped grooves, a circular ring and a movable groove body, wherein rotating discs are mounted at the joint of the inner end of a mounting cavity and an axial channel, the rotating discs are hinged to the mounting cavity, connecting pull rods are located in the strip-shaped grooves around the outer wall of the impeller center cavity, extend out of the strip-shaped grooves outwards in the radial direction and then are fixedlyconnected to the inner ring of the circular ring, and the inner ends of the connecting pull rods extend out of the strip-shaped grooves, are bent to the axial channel, and extend into the mounting cavity to be hinged to the rotating discs; movable rods are hinged between movable blades and the rotating discs; electromagnetic sensors are mounted in the mounting cavity of the movable blades, the circular ring can circumferentially rotate and movably mounted the movable groove body in a sleeving mode, the movable groove body is fixedly connected with a movable rod, the movable rod is arranged inthe axial direction parallel to the fixing impeller, and the movable rod is connected with a movement driver. According to the impeller with the adjustable impeller diameter for the centrifugal pump,the impeller diameter of the centrifugal pump can be adjusted in real time and changed, the flow and the lift of the centrifugal pump are increased on the premise that the mechanical loss of the centrifugal pump is not increased, and the impeller can be used for experimental tests and the like.

The invention discloses a subsection type liquid level measuring module, comprising a probe positioning base, a plurality of probes, a main control circuit and a power supply circuit, wherein the probes are arranged on the probe positioning base from top to bottom; each probe comprises a heating element and a temperature detecting circuit; each heating element is electrically connected with a first control output end of the main control circuit; a control input end of each temperature detecting circuit is electrically connected with a second control output end of the main control circuit; a signal output end of each temperature detecting circuit is electrically connected with a signal input end of the main control circuit so that a temperature detecting feedback signal is output to the main control circuit; and the main control circuit is used for obtaining a liquid level detecting result according to a difference value between the temperature detecting feedback signal before heating and the temperature detecting feedback signal after heating of each probe. The subsection type liquid level measuring module provided by the invention is not influenced by a liquid dielectric and an external environment and is more accurate and reliable in a measuring result.

The invention belongs to a prime mover, and particularly relates to a prime mover and a working method. The prime mover comprises an evaporator, a machine body and an energy body, wherein the energy body is arranged in the machine body in a sliding mode; a closed cavity is formed between the bottom of the energy body and the inner wall of the machine body; the evaporator communicates with the cavity and continuously absorbs heat to evaporate a liquid working medium, and the volume of the working medium expands due to evaporation so as to push the energy body to move upwards to do work until the upper limit stroke; and when the ambient temperature is lower than the evaporation temperature, the energy body moves downwards to compress the gaseous working medium due to self weight to completethe liquefaction. According to the prime mover and the working method, the evaporator evaporates the liquid working medium, the volume expansion pushes the energy body to move upwards to do work, andthe mechanical energy is output; when the ambient temperature meets the set value of the liquefaction stroke, the gaseous working medium is compressed by the self weight of the energy body to carry out the liquefaction stroke; the whole working stroke and liquefaction stroke do not need other auxiliary equipment, so that unnecessary energy loss is avoided; and the whole structure is simple, the cost is low, the performance is stable, the efficiency is high, and the positive economic value is realized.