31results about How to "Good signal delivery" patented technology

The invention relates to a pole plate electrode system for a logging instrument. The pole plate electrode system for the logging instrument comprises an insulating plate (2), a pair of emission electrode plates (3) and electric buttons (7), wherein a pair of grooves is formed in the two ends of the insulating plate (2), the emission electrode plates (3) are transversely embedded into the grooves of the insulating plate (2), the electric buttons (7) are embedded into the middle of the insulating plate (2), and the emission electrode plates (3) are symmetrically arranged relative to the electric buttons (7).

The invention relates to a capacitive touch panel. The capacitive touch panel includes at least one first conductive series extending along a first direction and at least one second conductive series extending along a second direction on a substrate. The first conductive series includes a plurality of first electrodes disposed along the first direction and a plurality of first connecting electrodes respectively disposed between two adjacent first electrodes. The second conductive series includes a plurality of second electrodes disposed along the second direction and a plurality of second connecting electrodes respectively disposed between two adjacent second electrodes. The first direction intersects the second direction. At least one kind of elements of the first electrodes, the first connecting electrodes, the second electrodes, and the second connecting electrodes are formed from a metal mash layer, and the first conductive series and the second conductive series are electrically isolated from each other. Thus, the capacitive touch panel achieves effects of being low in impedance and good signal transmission and sensing effects.

The invention provides a multi-foot-boosting rehabilitation robot. The multi-foot-boosting rehabilitation robot comprises waistband structures and bionic mechanical legs, wherein each two waistband structures are connected in series, then an annular waistband is formed, the waistband structures and the bionic mechanical legs are connected, each bionic mechanical leg comprises proximal shank, middle shank and distal shank, the waistband structures are connected with the upper end of the proximal shank through a side-sway joint, the proximal shank is connected with the rear end of the middle shank end through a first bending joint, and the middle shank is connected with the upper end of the distal shank through a second bending joint. The invention provides the multi-foot-boosting rehabilitation robot which is good in balance and high in energy utilizing efficiency, and is effectively applied to assisted rehabilitation of old people and the lower-limb disabled.

The invention discloses an intelligent model for catheterization nursing examination, comprising an adult's lower body model, a catheter and a genital model; the genital model is connected to a genital part of the adult's lower body model, and one end of the catheter is freely extended out and is fixedly provided with an infrared emitter; the adult's lower body model is provided with a supervisiondevice, the genital model is provided with a urethral canal, an inner opening of the urethral canal is provided with a resistance strain gauge, a plurality of infrared receivers are arranged evenly in the inner opening of the urethral canal, an outer opening of the urethral canal and an inner canal of the urethral canal, and the supervision device is used for finishing examination scoring. The intelligent model has the advantages that improved assessing efficiency and accuracy can be provided for nursing examination, fewer examiners are required, and manpower is saved.

The invention discloses a preparation method of a tissue engineering cell sheet with osteogenic differentiation and vasculogenesis. The preparation method comprises the steps of firstly, separating BMSCs (bone marrow mesenchymal stem cells), carrying out passage multiplication culture of the BMSCs, and culturing mesenchymal stem cell sheet to obtain the tissue engineering cell sheet with osteogenic differentiation and vasculogenesis. The cell sheet technology is adopted to separate and culture BMSCs, the obtained BMSCs are of a complete sheet structure containing extracellular matrix and having osteogenic differentiation and vasculogenesis potency. As a tissue formed by pure cells is transplanted into a body, the use of a scaffold and other carriers and the untoward effects are avoided; and besides, the BMSCs cell sheet retains important cell surface protein such as an ion channel, ligandin and the like, intercellular signal transmission can be performed well, the functions are kept to be coordinated, and the cell utilization rate and the cell transferring activity are greatly improved.

The invention relates to a novel power semiconductor device, especially relates to a metal housing used for a semiconductor power device. A bottom part of a steel housing is provided with a tungsten copper bottom plate, one end of which is extended out of the steel housing, and the extended part is provided with a through hole. In the steel housing, the tungsten copper bottom plate is provided with a beryllium oxide sheet, which is provided with a molybdenum sheet. The steel housing is provided with three sealing holes, in which are disposed leads, and the leads and the sealing holes are connected together by insulators. The two ends of each lead are respectively an inner end and an outer end, and the outer end is disposed on the outer part of the steel housing, and the inner end is disposed in the steel housing, and in addition, the inner end adopts a flat structure, and the width of the inner end is greater than the diameter of the corresponding sealing hole. The inner end of one of the leads is provided with a connecting hole, in which is fixedly disposed a binding post, and the binding post is connected with the molybdenum sheet. The performance of the housing is enhanced, and the metal housing is suitable for the packaging of the large-current, high-power, high-back pressure high heat conduction semiconductor devices.

The invention provides a preparation method of a conductive nano-silver wire patterned film. The preparation method comprises the following steps: preparing a template; uncovering cured PDMS from thetemplate for later use; adhering the face, with the structure, of a micro-fluidic chip to a culture dish or a cover slip; pouring nano-silver wires into the micro-fluidic chip, and carrying out drying; uncovering the chip; adding chitosan solution into the culture dish till the chitosan solution immerses the nano-silver wires, airing the culture dish, thus obtaining the fallen chitosan film with the patterned nano-silver wires, and placing the fallen chitosan film with the patterned nano-silver wires into NaOH solution for crosslinking, so that the stability of the chitosan film is increased.The invention further relates to applications of the conductive nano-silver wire patterned film. The prepared film is beneficial for the growth, proliferation and differentiation of nerve cells, myocardial cells and the like with the electrical signal conduction function, and the signal transmission among the cells. The prepared film has the operability and the predictably significant economic value and social value.

The invention provides a socket for electrical connecting a chip with a circuit board. The chip contains at least a conductive port, and the circuit board contains at least a contact point corresponding to the conductive port. The socket contains a substrate and at least a conductive pillar. The substrate contains a hole penetrating the substrate. The conductive pillar is configured to pass through the hole. When the socket is disposed between the chip and the circuit board, a first end of the pillar contacts with the conductive port, and a second end of the same contacts to the contact point.

The invention discloses a method for acquiring an in-vitro cultured cell / thin cell layer by utilizing visible light irradiation. The method comprises the following steps: implementing cell in-vitro cultivation on the surface of a photosensing material; performing photoelectric transformation on the material surface by applying a light field after in-vitro cultivation is completed so as to realize cell detachement and avoid injury on cell functions caused by a traditional enzymolysis method. The photosensing material is a photosensing semiconductor sheet or film thereof with p / n junctions. Important extracellular matrix proteins, such as ion channels and connexins, are preserved in the cell layer acquired by utilizing visible light, signal transfer can be performed among cells, and harmonization of functions can be kept, so that the cell utilization and transfer cell activity can be greatly improved. The experimental method is simple in flow, mild in experiment condition and low in cost, has excellent operability, and is convenient for popularization and implementation.

The invention discloses a self-bearing anti-compression large power coaxial composite cable, which comprises an internal conductor center bearing core, a first buffer layer, a tubular internal conductor, an insulating layer, an outer conductor, a second buffer layer and an oversheath from inside to outside; the outer conductor comprises multiple outer conductor conductive wires that are winded at intervals and then combined with at least one control insulation core; a metal anti-compression pipe is installed between the second buffer layer and the oversheath; a single conductor wire protruding ridge is installed on the oversheath; the height of the single conductor wire protruding ridge is not less than 0.5mm and the width not less than 1mm. The integral body of the cable is fully symmetrical; copper wires and galvanizing steel wires have shielding functions; the inner conductor and the outer conductor are in concentric position; the electromagnetic energy is limited in a medium between the inner conductor and the outer conductor for propagation, therefore, the attenuation is small and the shielding property is high.

The invention discloses a CAN bus communication combination system, and relates to the automobile electrical appliance manufacturing industry. The CAN bus communication combination system comprises abody control module (BCM), a CAN transceiver module, an instrument control unit, a liquid crystal display unit, an indicator lamp trigger module, an electronic control unit (ECU) module, an anti-lockbraking system (ABS) module, an electric park brake (EPB) module, an EBS module and an ATM module; the BCM is the whole vehicle control module, all switch control signals of a whole vehicle are inputinto the BCM, and the BCM transmits the switch control signals to the instrument control unit, the ECU module, the ABS module, the EPB module, the EBS module and the ATM module through the CAN transceiver module; and the logic judgment of the instrument control unit is set by a chip, all indicator lamps are triggered to work through the indicator lamp trigger module, and displaying is conducted through the liquid crystal display unit. According to the CAN bus communication combination system, the switch signals of the whole vehicle are transmitted through a CAN, signal transmission and whole vehicle line arrangement between controllers are facilitated, the reliability of the signals is ensured, and the electrical fault is reduced.

An articular cartilage graft and a preparation method thereof. The articular cartilage graft prepared by the present invention consists of three layers from the outside to the inside: superficial layer, middle layer and deep layer, and the thickness, shape and size of each layer are matched with the cartilage damage site, No need for preoperative shaping, after implantation, it corresponds to the distribution of the surrounding normal cartilage layers, which is conducive to the signal transmission, transduction and regulation between cells, and can better integrate with the surrounding normal cartilage tissue; it has a structure consistent with natural cartilage Features, from the superficial layer to the deep layer, the content of type II collagen gradually decreases, the content of GAG gradually increases, and the compression resistance and abrasion resistance are good; the chondrocytes in the cartilage graft are wrapped by extracellular matrix, and the immunogenicity is low, avoiding implantation After immune rejection occurs, it can survive and function for a long time, and improve the long-term curative effect of cartilage repair.

The invention provides a side-sway joint of a multi-foot-boosting rehabilitation robot. The side-sway joint comprises electric push rod drivers, rotation pairs for connecting waistband structures of the robot and the electric push rod drivers, rotation pairs for connecting the proximal shank of the shank and the electric push rod drivers, and rotation pairs for connecting the waistband structures and the proximal shank, wherein stepping motors are mounted on motor fixing clamp plates, fixing round holes are formed in the motor fixing clamp plates, fixing hinge pins pass through the fixing round holes and are connected to the waistband structures, output shafts of the stepping motors are connected with one ends of lead screws, the lead screws are connected with lead screw sleeves, one ends of rod-end joint bearings are in clearance fit with the lead screw sleeves through end opening nuts, end round holes are formed in the other ends of the rod-end joint bearings, the end round holes and end hinge pins are connected to the upper part of the shank, the lead screw sleeves are in interference fit with round holes of sliders, the sliders sleeve guide rails in a sliding manner, and the guide rails are fixed to the motor fixing clamp plates. The side-sway joint is good in balance, the energy utilizing efficiency is high, and the side-sway joint is effectively applied to assisted rehabilitation of old people and the lower-limb disabled.

The invention discloses a microfluidic channel carrier structure for large-scale culture of stem cells and immune cells. The microfluidic channel carrier structure includes a plurality of microspheres(1). The diameter of the microspheres (1) is 0.5 mm to 2.7 mm. The microspheres (1) are stacked in a fixed bed bioreactor (2) to form a fixed bed (3), and the fixed bed (3) forms a microfluidic channel carrier structure. The maximum linear space dimension L between adjacent microspheres (1) in the microfluidic channel carrier structure is 0.183 mm to 0.988 mm. The microfluidic channel carrier structure of the invention is formed by stacking a plurality of microspheres. The microfluidic channel in the microfluidic channel carrier structure can provide cells with a micro-environment closer to that in human tissues, facilitate the interaction and signal transmission between cells and between cells and extracellular matrix, facilitate the expansion of cells, and can expand the number of cellscultured simultaneously to 100-200 billion.

The invention discloses a preparation method of a tissue engineering cell sheet with osteogenic differentiation and vasculogenesis. The preparation method comprises the steps of firstly, separating BMSCs (bone marrow mesenchymal stem cells), carrying out passage multiplication culture of the BMSCs, and culturing mesenchymal stem cell sheet to obtain the tissue engineering cell sheet with osteogenic differentiation and vasculogenesis. The cell sheet technology is adopted to separate and culture BMSCs, the obtained BMSCs are of a complete sheet structure containing extracellular matrix and having osteogenic differentiation and vasculogenesis potency. As a tissue formed by pure cells is transplanted into a body, the use of a scaffold and other carriers and the untoward effects are avoided; and besides, the BMSCs cell sheet retains important cell surface protein such as an ion channel, ligandin and the like, intercellular signal transmission can be performed well, the functions are kept to be coordinated, and the cell utilization rate and the cell transferring activity are greatly improved.

A method for preparing conductive nano-silver wire patterned film: firstly, a template is made; then the cured PDMS is peeled off from the template for later use; The silver wire is poured into the microfluidic chip and dried; the chip is uncovered; the chitosan solution is added to the petri dish to cover the nano silver wire, and the petri dish is dried to obtain a patterned nano silver wire. Chitosan film, put the shed chitosan film patterned with silver nanowires into NaOH solution to cross-link, so that the stability of the chitosan film is increased. The invention also relates to the application of the conductive nano-silver wire patterned film. The prepared thin film is beneficial to the growth, proliferation and differentiation of nerve cells and cardiomyocytes with electrical signal transduction function, as well as the signal transmission between cells. It has operability and expected relatively huge economic value and social value.

The invention relates to a full-automatic box press which comprises a servo compression motor, a paperboard carrying plate, a line nail, a feeding and leveling mechanism, a leveling structure housing and a feeding structure, wherein the lower end of the servo compression motor is connected to a paperboard folding batten through a spiral rod and a nail hole is embedded into the paperboard folding batten; a fixed plate slide rail is arranged at the lower end of the fixed plate, and a nail through plate is arranged out of the fixed plate; a controller is mounted on the top of a servo air pressure valve; and the feeding and leveling mechanism is mounted at the right outer end of the servo compression motor, and the leveling structure housing is mounted out of the feeding and leveling mechanism. The full-automatic box press automatically binds the paperboards needed to be bound in boxes through the feeding and leveling mechanism, the feeding structure and the controller, and the paperboards are bound by an air pressure type nailing manner, so that the noise of equipment during work is reduced, the whole flow fully depends on autonomous work of the equipment, and the work efficiency of the equipment is greatly increased.

The invention discloses a method for acquiring an in-vitro cultured cell / thin cell layer by utilizing visible light irradiation. The method comprises the following steps: implementing cell in-vitro cultivation on the surface of a photosensing material; performing photoelectric transformation on the material surface by applying a light field after in-vitro cultivation is completed so as to realize cell detachement and avoid injury on cell functions caused by a traditional enzymolysis method. The photosensing material is a photosensing semiconductor sheet or film thereof with p / n junctions. Important extracellular matrix proteins, such as ion channels and connexins, are preserved in the cell layer acquired by utilizing visible light, signal transfer can be performed among cells, and harmonization of functions can be kept, so that the cell utilization and transfer cell activity can be greatly improved. The experimental method is simple in flow, mild in experiment condition and low in cost, has excellent operability, and is convenient for popularization and implementation.

The invention discloses an obstetrics and gynecology collecting bin with a bag sealing mechanism. The obstetrics and gynecology collecting bin comprises a bin body, a power device, a peculiar smell removing device, a heat sealing device and an air pressure mechanism, wherein, the bin body comprises a barrel body, a bin bottom, a pressing ring cover and a top cover; the power device comprises a base, a motor frame, a power motor, a power shaft, a spiral sleeve and a guide mechanism; the peculiar smell removing device comprises a box shell, an exhaust fan and a treatment box; the heat sealing device comprises a heat sealing mechanism and a driving mechanism; and the air pressure mechanism includes a pressure fan and an air supply flow channel. According to the obstetrics and gynecology collecting bin with the bag sealing mechanism, by arranging the peculiar smell removing device, peculiar smells can be conveniently treated and then discharged out of the bin; by arranging the power device, so that the middle parts of garbage bags are conveniently twisted together; by arranging the pressure fan, air in the garbage bags can be conveniently pressed out by the power device when the garbage bags are rotated, and the garbage bags are prevented from being broken by residual air in the garbage bags after the garbage bags are rotated; and by arranging the heat sealing device, the twisted parts of the middle parts of the garbage bags can be conveniently hot-melted together, so that vomit is sealed in the garbage bags.

The invention discloses an intelligent vomit collecting barrel for gynaecology and obstetrics. The intelligent vomit collecting barrel comprises a barrel body, a power device, a peculiar smell removing device and a control system, wherein the barrel body comprises a tube body, a barrel bottom, a pressing ring cover and a top cover; the power device comprises a base, a motor frame, a power motor, apower shaft, a spiral sleeve and a guide mechanism; the peculiar smell removing device comprises a box shell, an exhaust fan and a treatment box; and the control system comprises a control box, a PLC, a storage battery and a control switch. Through the arrangement of the peculiar smell removing device, peculiar smells in the collecting barrel can be conveniently discharged into the treatment boxthrough the exhaust fan to be treated in the using process and then discharged out of the barrel, and vomit smell is prevented from polluting indoor air; through the arrangement of the power device, the middles of garbage bags can be twisted together conveniently when the garbage bags are collected, and the situation that peculiar smells in the bags are emitted, and the environment is affected isavoided; and through the arrangement of the control system, the top cover can be automatically opened and peculiar smell air can be automatically pumped out.

The invention relates to a preparation method of a cell-containing nanofiber scaffold. This method can realize the integrated processing of degradable biomaterials and cells, and directly utilizes high-voltage electrosprayed nanofibrous scaffolds containing cells. The specific steps are: (1) Use deionized water to prepare a water-soluble degradable polymer into a homogeneous solution, then add β-TCP powder for mixing and grind with a vibrating ball mill; (2) Sterilize the above materials with high-temperature steam; (3) Add the cell suspension to the above-mentioned sterilized material, and stir evenly; (4) Use a syringe to extract the above-mentioned cell-containing material and place it in a micropump, turn on the high-voltage power supply and the micropump, set the corresponding process parameters for EFI, and finally A nanofibrous scaffold containing cells is obtained. The entire preparation method of the invention is simple and easy to implement, and has great practical significance for rapid repair of bone defects and the like.

The invention discloses a high-efficiency multi-shielded cable, relates to the technical field of cables, and solves the technical problem of poor shielding performance of common cables. Conductor, conductor shielding layer, insulating layer, insulating shielding layer and copper tape shielding layer, four identical shielded cable core wires are wrapped with loose sleeve layer, inner shielding layer, refractory layer, outer shielding layer, armored layer, inorganic Mineral insulation layer, a reinforcing core is set in the loose sleeve layer, the material of the inorganic mineral insulation layer is magnesium oxide, and the refractory layer is ceramic refractory silicone rubber with a thickness of 2-4mm; compared with ordinary cables, the water-blocking cable has a better water-blocking effect , The shielding effect is good, thereby prolonging the service life of the cable and reducing the cost of use.

The invention discloses an intelligent vomit collecting bin with a bag sealing mechanism for the obstetrics and gynecology. The intelligent vomit collecting bin comprises a bin body, a power device, apeculiar smell removing device, a heat sealing device and a control system, wherein, the bin body comprises a barrel body, a bin bottom, a pressing ring cover and a top cover; the power device comprises a base, a motor frame, a power motor, a power shaft, a spiral sleeve and a guide mechanism; the peculiar smell removing device comprises a box shell, an exhaust fan and a treatment box; the heat sealing device comprises a heat sealing mechanism and a driving mechanism; and the control system comprises a PLC, a storage battery and a control switch. According to the intelligent vomit collectingbin with the bag sealing mechanism for the obstetrics and gynecology, by arranging the peculiar smell removing device, peculiar smells in the collecting bin can be conveniently discharged into the treatment box to be treated and then discharged out of the bin, and vomit smell is prevented from polluting indoor air; by arranging the power device, the middles of the garbage bags can be twisted together conveniently, and the situation that the peculiar smells in the bags diffuse and influence the environment is avoided; and by arranging the heat sealing device, the twisted parts of the middle parts of the garbage bags can be conveniently hot-melted together, and vomit is sealed in the garbage bags.

A textile technology device having a signaling device (6) has a flashing circuit for displaying a defined operating state, such as a thread breakage. Said circuit comprises of a flashing LED (28), to which at least one regular LED (29) is series connected. The circuit arrangement is cost-effective and sturdy. It allows both optical signaling of an error state and an electrical signaling of the error state to a central control unit, which can analyze the power requirement of the signaling unit for detecting the error state. The central control unit can further distinguish between simple line short circuits, or other electrical error states, from a properly reported error, because the flashing circuit comprising the flashing LED (28) and at least one further regular LED (29) records a chronologically periodically changing amount of power, once the circuit responds.

The invention discloses a high-quality Eucommia ulmoides planting method, and relates to the technical field of traditional Chinese medicine planting. According to the method, drought stress treatmentis carried out on 8-year-old Eucommia ulmoides, the water volume of the Eucommia ulmoides is maintained in January, drought treatment is started from the early February for 30 to 40 days, then a grape seed liquid is sprayed on the surface of Eucommia ulmoides leaves, spraying is carried out once every 2 days and continuously for 5 times, and then spraying of the grape seed liquid is stopped, andthe above operation is taken as a first treatment cycle; then normal watering is carried out on the Eucommia ulmoides, drought treatment is started from early September for 35 to 45 days, then a grapeseed liquid is adopted for spraying the surface of Eucommia ulmoides leaves once every 2 days and continuously for 5 times, then spraying of the grape seed liquid is stopped, and the above operationis taken as a second treatment cycle; and then the Eucommia ulmoides is normally watered, when the Eucommia ulmoides is 10 years old, Eucommia ulmoides bark is taken. The content of flavonoids and gutta percha is greatly improved, and the quality of Eucommia ulmoides is improved.

The invention provides a rectangular high-speed differential signal connector, and solves the problems that an existing high-speed differential signal connector is complex in structure for realizing the anti-rotation function of a contact body, needs a plurality of matching parts, and cannot meet the requirements of miniaturization, small occupied space, easiness in disassembly and assembly, low cost, high environmental resistance and light weight. The high-speed differential signal connector comprises a plug and a socket which are in butt joint with each other, wherein the plug comprises a plug shell, a plurality of mounting hole differential contact bodies, a plug accessory pressing plate and a first positioning assembly, and the socket comprises a socket shell, a plurality of pin mounting differential contact bodies, a socket accessory pressing plate and a second positioning assembly. The high-speed differential signal transmission device has the function of preventing the contact body from rotating, has the advantages of few parts used in the structure, cost saving, short production period, small size, light weight, convenience in maintenance and use, high environment resistance, simple and practical product positioning mode and capability of realizing transmission of high-speed differential signals.

The invention discloses a high-quality Eucommia ulmoides planting method, and relates to the technical field of traditional Chinese medicine planting. According to the method, drought stress treatmentis carried out on 8-year-old Eucommia ulmoides, the water volume of the Eucommia ulmoides is maintained in January, drought treatment is started from the early February for 30 to 40 days, then a grape seed liquid is sprayed on the surface of Eucommia ulmoides leaves, spraying is carried out once every 2 days and continuously for 5 times, and then spraying of the grape seed liquid is stopped, andthe above operation is taken as a first treatment cycle; then normal watering is carried out on the Eucommia ulmoides, drought treatment is started from early September for 35 to 45 days, then a grapeseed liquid is adopted for spraying the surface of Eucommia ulmoides leaves once every 2 days and continuously for 5 times, then spraying of the grape seed liquid is stopped, and the above operationis taken as a second treatment cycle; and then the Eucommia ulmoides is normally watered, when the Eucommia ulmoides is 10 years old, Eucommia ulmoides bark is taken. The content of flavonoids and gutta percha is greatly improved, and the quality of Eucommia ulmoides is improved.

The invention discloses a CAN bus communication combined system, which relates to the automobile electric appliance manufacturing industry. Including BCM module, CAN transceiver module, instrument control unit, liquid crystal display unit, indicator light trigger module, ECU module, ABS module, EPB module, EBS module and ATM module; the BCM module is the vehicle control module, each of the vehicle The switch control signal is input to the BCM module, and the BCM module transmits the switch control signal to the instrument control unit, the ECU module, the ABS module, the EPB module, the EBS module and the ATM module through the CAN transceiver module; the instrument control unit is judged by the chip setting logic, Each indicator light is triggered to work by the indicator light trigger module, and is displayed by the liquid crystal display unit. The invention realizes the transmission of the switch signal of the whole vehicle through the CAN, facilitates the signal transmission between controllers and the wiring layout of the whole vehicle, ensures the reliability of the signal, and reduces the failure of electrical appliances.

The invention discloses a non-contact phase difference type torque sensing device which comprises a center shaft, a torsion bar, an output end, sensors and at least two gratings. The torsion bar sleeves the middle shaft, and one end of the torsion bar is connected with the output end; the at least two gratings are respectively arranged on the torsion bar at intervals; and each grating is correspondingly provided with a sensor which is used for detecting the phase difference between the gratings. Compared with a traditional phase difference sensor adopting a gear, the non-contact phase difference type torque sensing device has the advantages that the gratings are used for replacing the gear, non-contact measurement is achieved, the precision is high, and the signal transmission is easy and convenient. Compared with a strain gauge type torque sensor, wireless power supply and wireless signal transmission are not needed, the technology is simplified, and the cost is low. The device is wide in application field, and can be perfectly matched with various bicycles such as a bicycle with a front center shaft sensor, a motor-assisted bicycle with a middle torque, a motor-assisted bicycle with a rear motor and the like.