88results about How to "Reduced precision requirements" patented technology

The utility model provides a kind of vacuum pump cooling mechanism, including rotor chamber, its both ends are open, and the outer surface of rotor chamber is equipped with two symmetrical arrangement air outlet, and the outer surface top of rotor chamber is equipped with air inlet;The rotor chamber is equipped with rotor cavity, and the channel for circulating cooling water is formed between rotor cavity and the inner wall of rotor chamber, and the both ends of rotor cavity are equipped with the rim that is connected with the fixed rotor cavity, and the rim is installed in the rotor chamber, and the air inlet, air outlet are all through channel and with the inside space of rotor chamber is communicated;One side of the air outlet is equipped with water inlet pipe, and the water inlet pipe is connected with the fixed rotor chamber, and the water inlet pipe is connected with channel;The outer surface top of rotor chamber is equipped with return pipe, and the return pipe is connected with channel, and the utility model has the following beneficial effects: reduce the production difficulty and processing cost of rotor chamber.

The invention discloses an axial flux permanent magnet synchronous reluctance motor rotor based on modular harmonic counteracting, the rotor is designed in a three-in-one mode of structure modularization, magnetic barrier gradient and phase computable dislocation, a rotor assembly is formed by splicing N fan-shaped rotor modules along the circumference, and the adjacent modules are provided with optimal dislocation angles calculated according to the harmonic counteracting principle. The sum of target harmonic magnetic field vectors generated by each module is zero; a U-shaped magnetic barrier array of which geometric parameters are monotonically changed in a gradient manner is arranged in the fan-shaped rotor module, and a permanent magnet group is embedded in the fan-shaped rotor module; main electromagnetic harmonic waves are offset from the source, magnetism gathering and resistance increasing functions are decoupled, the mechanical robustness and the electromagnetic performance of the motor are improved, meanwhile, overall machining is converted into standardized module assembling, the manufacturing cost and the maintenance difficulty are reduced, different motor pole numbers can be flexibly adapted, and the service life of the motor is prolonged. The method is suitable for high-end application scenes such as new energy automobiles, industrial driving and aerospace.

A ceramic wedge cone processing device belongs to the technical field of ceramic wedge polishing, and includes a base and an angle adjusting and clamping device arranged on the base. The angle adjusting and clamping device includes an angle adjusting mechanism arranged at the tail and fixed on the base, and a clamping mechanism elastically connected to the base and fixed at the front of the angle adjusting mechanism. An elastic connecting seat is arranged between the clamping mechanism and the base. The elastic connecting seat includes a bracket integrated with the clamping mechanism shell, and at least three spring pieces arranged at the bottom of the bracket and fixed on the base. The front of the angle adjusting mechanism is provided with a mounting base plate, the tail of the clamping mechanism is provided with a power box, and the power box is fastened on the mounting base plate through bolts. The processing device is sensitive in adjustment, and can be used alone and in combination in different scenes.

The radial flexible mechanism of the scroll compressor comprises a main shaft, a crankshaft seat is arranged at the output end of the main shaft, an eccentric hole is axially formed in the end portion of the end, away from the main shaft, of the crankshaft seat, and a crank pin is fixedly connected into the eccentric hole. The outer side of the end, away from the crankshaft seat, of the crank pin is fixedly sleeved with an eccentric shaft sleeve, one side of the eccentric shaft sleeve is fixedly connected with an eccentric block, a limiting groove is formed in the outer side of the end, close to the eccentric block, of the crankshaft seat, and an elastic washer is arranged on the inner side of the limiting groove. The groove is formed in the outer side of the crankshaft seat on the main shaft, and the rubber ring is fixed on the crankshaft, so that the collision between the eccentric block and the crankshaft is avoided, and the NVH (Noise Vibration and Harshness) performance is favorably improved; due to the fact that the rubber ring is additionally arranged, the self-aligning function has a buffering function, too intense self-aligning and rollback are avoided, and the movable disc of the compressor is more stable in operation, low in noise and good in NVH expression homogeneity.

This utility model discloses an eco-board based on single mortise and tenon joint. The eco-board includes sub-wood strips and mother-wood strips, and the transverse direction of the eco-board is spliced ​​using mortise and tenon joints, while the longitudinal direction is spliced ​​using toothed joints. Its advantages are as follows: Compared with double mortise and tenon joints, the eco-board of this utility model, using a single mortise and tenon joint, has higher process efficiency and better economy. The processing time for single mortise and tenon joints can be reduced by 30%-50%, making it particularly suitable for mass production and requiring lower equipment precision. Secondly, it reduces the grooving process, lowering labor and tooling costs. Furthermore, the single mortise and tenon joint reduces material removal, making it suitable for scenarios requiring weight reduction (such as hanging cabinets and movable furniture). Moreover, the single mortise and tenon joint is particularly suitable for thin boards, requiring no larger board thickness for support, and can be used stably in eco-boards with a thickness of less than 18mm, thus broadening its application range.

This invention belongs to the field of electromagnetic shielding, and relates to an electromagnetic shielding material with a macroscopic conical hole structure, its preparation method, and its application. The preparation method includes: S1. Adding graphene nanosheets and polylactic acid particles to dichloromethane to obtain a graphene composite dispersion; S2. Drying the graphene composite dispersion at room temperature in a fume hood to obtain a graphene / polylactic acid composite material; S3. Chopping the obtained graphene / polylactic acid composite material and feeding it into a benchtop extruder, extruding composite filaments for 3D printing via melt spinning; S4. Creating a 3D printing model on a computer, feeding the composite filaments into a 3D printer, and processing the material with a macroscopic conical hole array structure using computer-controlled 3D printing. This electromagnetic shielding material exhibits excellent electromagnetic shielding performance, has a simple processing technology, low equipment parameter requirements, and is suitable for industrial production.

This utility model discloses a laser triangulation ranging device and system; relating to the field of laser ranging technology; including a laser for emitting laser light towards the object being measured; a light-receiving lens assembly for receiving the reflected laser light from the object being measured and correcting and focusing the reflected laser light spot; the light-receiving lens assembly includes a focusing lens and multiple correction elements; the light spot of the reflected laser light from each correction element is corrected in different properties and falls onto the light-receiving element; this solution improves the structure of the traditional laser triangulation ranging optical path by correcting the light spot of the reflected laser light spot in different properties through the light-receiving lens assembly, ensuring measurement accuracy, reducing costs, and effectively accelerating assembly efficiency; by increasing the light spot size in the laser transmission direction at the position of the light-receiving element through the light-receiving lens assembly, the center of the light spot does not need to be aligned with the center of the light-receiving element to be detected, reducing the structural accuracy of the laser triangulation ranging device and improving assembly efficiency.

This invention discloses a BUCK circuit with precisely adjustable current and its adjustment method. The circuit includes a time loop control circuit and a BUCK constant current circuit. The input terminal of the time loop control circuit is connected to the output terminal of the BUCK constant current circuit to obtain the output current Iout of the BUCK constant current circuit. The output terminal of the time loop control circuit is connected to the input terminal of the BUCK constant current circuit to adjust the output current Iout of the BUCK constant current circuit. The time loop control circuit includes a sampling circuit I0, a comparator I1, a control calculation module I2, and an AND gate I3. The BUCK constant current circuit includes a driver circuit I4, an NMOS transistor Q0, a freewheeling diode D0, an energy storage inductor L0, a current sensing resistor R0, a filter capacitor C0, a light-emitting diode D1, and a power supply. The adjustment method includes: obtaining the sampling voltage Vsns and calculating the output current Iout; if the output current Iout is adjusted to a high current adjustment, it enters the analog adjustment mode; otherwise, it enters the mixed analog-digital adjustment mode. The output current of the BUCK circuit can be precisely adjusted.

The utility model relates to a landing door lock for a construction elevator, which comprises a first fixing plate and a second fixing plate, and the first fixing plate and the second fixing plate can be arranged at an interval in the left-right direction; the door bolt is rotatably connected with the first fixing plate, and the other end of the door bolt is a swing end; the second fixing plate is provided with a lock groove with an opening in the upper portion, and the swing end of the bolt can be placed in the lock groove after the bolt swings. The electronic lock is arranged on the right fixing plate, a spring bolt of the electronic lock can stretch out and draw back in the front-back direction and can stretch out of the rear side wall of the lock groove, a lock hole is formed in the side, facing the spring bolt, of the swing end of the bolt, in the locking state, the spring bolt is inserted into the lock hole, the bolt cannot be separated from the lock groove, and in the unlocking state, the bolt can swing to be separated from the lock groove; the inductive switch is used for sensing whether the bolt is placed in the lock groove or not and outputting a signal. In the manufacturing and mounting process of the landing door lock, the left direction and the right direction of the fixing plate do not need to be distinguished additionally, so that the universality of the product is better, and the production and mounting efficiency is greatly improved.

The application provides a power cable damage detection device, which comprises a conveying mechanism, a twisting mechanism, a camera mechanism and a driving mechanism; the conveying mechanism comprises a rack, a chain plate and a chain wheel; the twisting mechanism comprises a clamping assembly and a control assembly; a plurality of clamping assemblies are installed on the chain plate, the control assembly controls three or more clamping assemblies to clamp the cable, and controls the clamping assembly in the middle to rotate after clamping, so as to clamp the two ends of the cable to be detected and reset after twisting the middle part; the camera mechanism collects images on the twisted cable; after the camera mechanism completes the collection, the control assembly controls the clamping assembly to separate from the cable; and the driving mechanism drives the cable to move linearly. The twisting action actively amplifies the damage position on the cable through physical deformation, converts the subtle defects that can be recognized only by high-precision equipment into obvious features that are easy to capture by the camera mechanism, reduces the precision requirement of the image recognition system, and greatly improves the sensitivity of the damage detection.

The invention discloses an LED light-emitting structure and a preparation method thereof, and a multicolor LED light-emitting structure and a preparation method thereof, the LED light-emitting structure comprises a substrate, the substrate is provided with a plurality of through holes penetrating through the substrate, after an LED chip is placed on the substrate, the LED chip is driven to move on the substrate, so that the LED chip is embedded into the through holes, the LED chip is positioned on the surface of the substrate, and the multicolor LED light-emitting structure is obtained. As the requirement on the precision of the LED chip is very low when the LED chip is placed on the substrate at the beginning, the requirement on the position of a single LED chip when the LED chip is transferred can be greatly reduced, the high-precision requirement during traditional mass transfer is avoided, expensive high-precision mass transfer equipment is not needed for transfer, the production efficiency is greatly improved, and the production cost is reduced. And the production cost is reduced.

The application discloses an improved model-free current prediction control method and device and system based on a forgetting factor. The method does not need to acquire system parameters in advance, only needs to collect a load current, and then approximately calculates a current increment from historical current data, and then outputs an optimal inverter switch state from a minimized current value function, and meanwhile, a forgetting factor is introduced to weaken the adverse effect of a sampling error on the system, so that the model-free current prediction control is realized. On the basis of guaranteeing the realization of the parameter-free control, the forgetting factor is introduced to weaken the adverse effect of the sampling error on the system, the current quality is improved while the response speed is faster, and the robustness of the control is improved. The application is suitable for different types of power electronic topological structures, and does not need to separately perform mathematical modeling on different types of power electronic topological structures, has a reference significance for the model-free prediction current control of the power electronic converter, and has a wide application prospect.

The present disclosure relates to a liquid flow measurement structure and a measurement system using the same. The measurement structure comprises a flow channel body, an electrode sheet assembly arranged inside the flow channel body, the electrode sheet assembly comprising a plurality of capacitive sensing electrode sheets, and a digital capacitive sensing assembly connected to the electrode sheet assembly through signal lines, configured to collect capacitive signals of the plurality of capacitive sensing electrode sheets and output capacitive data associated with liquid level height. The plurality of capacitive sensing electrode sheets are arranged in a multi-layer grid structure inside the flow channel body, the multi-layer grid structure is distributed along the flow direction of the flow channel body, and a single layer grid structure is configured to arrange a single capacitive sensing electrode sheet. Alternatively, part of the capacitive sensing electrode sheets in the electrode sheet assembly are arranged in the sidewall of the flow channel body. The present disclosure has the advantages of simple structure, low cost, high reliability, and adaptability to various extreme application scenarios.

The application discloses a kind of active control method, device and car of automobile interior noise combined with virtual sensing.The method can include: for the interior noise of vehicle at different speeds, by reference signal, physical monitoring signal and virtual error signal respectively construct multiple groups of auxiliary filter containing optimal control filter information and observation filter containing the transfer function between physical monitoring point and virtual error point;By mean method, construct composite observation filter;At different speeds, based on least mean square estimation error matching mechanism, by reference signal, physical monitoring signal, auxiliary filter, composite observation filter, active noise control is carried out at noise reduction target position.The present application can significantly reduce the noise at ear at different speeds while the arrangement position of error microphone does not affect the normal activities of passengers, improve the comfort of riding.

This utility model discloses a stator assembly and a motor. The stator assembly includes: a mounting frame; a winding disposed on the mounting frame and having a connecting lead at one end, the connecting lead having an insulating layer on its surface; and an electrical connector disposed on the mounting frame and forming a limiting groove, the limiting groove being adapted to receive a portion of the connecting lead, the limiting groove having a piercing portion adapted to contact the insulating layer to pierce the insulating layer, thereby electrically connecting the electrical connector to the connecting lead. The stator assembly designed according to this utility model, by designing a limiting groove in the electrical connector to limit the movement of the connecting lead, and by designing a piercing portion in the limiting groove, allows the electrical connector to pierce the terminal during installation onto the mounting frame, thereby electrically connecting the connecting lead to the electrical connector. This reduces the assembly time between the connecting lead and the electrical connector, improving motor manufacturing efficiency.

This invention provides an analog-to-digital converter (ADC) for a battery management system, a battery management system, and a voltage quantization method, applicable to the field of quantization technology. The ADC includes: a timing control circuit; a feedforward integration and feedback circuit, used to generate an nth integral voltage based on a reference voltage and an input voltage received from the battery in the nth cycle of M1 cycles, under the control of the timing control circuit and the (n-1)th low-order digital code; a successive approximation ADC circuit, used to: in the nth cycle, under the control of the timing control circuit, generate an nth low-order digital code based on the nth integral voltage; quantize the unquantized residual voltage of the M1th integral voltage for M2 cycles to obtain M2 high-order digital codes with a higher bit count than the low-order digital codes; and a filter, used to generate a target quantized value based on the M1 low-order digital codes and the M2 high-order digital codes.

This utility model relates to the field of brake calipers, and discloses a built-in brake clamping force transmission module assembly and its brake motor assembly. The clamping force transmission module includes an upper module and a lower module, with upper and lower pins respectively injection-molded in the upper and lower modules. The upper and lower pins are electrically connected via a flexible flat cable. Several PCBA elastic contact pins are mounted on the PCBA board, and a pin module is provided on the force sensor. The pin module includes several sensor elastic pins for transmitting brake clamping force signals. The sensor elastic pins are connected to the lower pins, and the PCBA elastic contact pins are connected to the upper pins, so that the signal emitted by the force sensor is transmitted to the PCBA through the clamping force transmission module. In this utility model, the clamping force transmission module, PCBA, and force sensor are all connected by elastic pin contacts. When the elastic pin contacts are connected, precise alignment is not required during assembly, reducing the requirements for the production and assembly accuracy of related components, simplifying the assembly process, and avoiding losses caused by improper assembly.

The utility model discloses a module boxing device which comprises a rack, and the lower portion of the rack is at least connected with a hoisting part and a tensioning part. The hoisting part comprises a supporting block connected with the rack and a rotating shaft rotationally connected with the supporting block, and a hoisting connecting block used for being connected with a module is arranged at the lower end of the rotating shaft; the tensioning part comprises a supporting shaft connected with the rack, the supporting shaft is sleeved with an elastic assembly, a tensioning plate connected with the supporting shaft in a sliding mode is arranged on the outer side of the elastic assembly, and a clamping pin is arranged on the outer side of the tensioning plate. And the tensioning plate in the tensioning part is fixedly connected with the inner wall of the module, so that the battery module can be fixed from two directions of the upper end and the inner wall, and the safety in the hoisting process is ensured.

The utility model provides a kind of soft rope connection's fabricated stair, including ladder beam structure, stair section and connecting section, ladder beam structure includes two ladder beams, the two ladder beams are respectively located left and right side interval arrangement, and the ladder beam higher in left side is located than the ladder beam in right side;Stair section is set between two ladder beams, stair section is obliquely arranged, and left high right low, the adjacent end of stair section and ladder beam is supported on ladder beam;Gap is left between ladder beam and stair section;Connecting section is set in gap, connecting section is used to connect stair section and ladder beam, the soft rope connection's fabricated stair can not use prefabricated component connection, the precision requirement of connection is lower, construction difficulty is lower, directly set on structural reinforcement, it is convenient to position while after pouring is completed, tensile property and structural strength are higher.

The invention discloses an intelligent medicine disassembling and subpackaging system and a control method thereof. The intelligent medicine disassembling and subpackaging system comprises a mobile robot used for carrying a target medicine plate and a subpackaging box; the medicine disassembling and sub-packaging structure is detachably connected to the mobile robot according to a preset angle and used for receiving the target medicine plate carried by the mobile robot and performing medicine disassembling operation on the target medicine plate; the central controller is installed on the mobile robot and electrically connected with the mobile robot and the medicine disassembling and subpackaging structure. And the central controller is used for controlling the mobile robot to carry a target medicine plate in the medicine storage area to the medicine disassembling and sub-packaging structure, and continuously controlling the mobile robot to carry the sub-packaging box to a designated area after controlling the medicine disassembling and sub-packaging structure to disassemble medicines on the target medicine plate to the sub-packaging box. Therefore, according to the embodiment of the invention, a robotized workstation with high intelligence and strong self-adaption is constructed, the whole-process unmanned closed-loop operation can be realized, and the efficiency of medicine disassembly and the accuracy of medicine subpackaging are improved.

This utility model discloses a novel locking pop-out structure, relating to the technical field of locking buckle structures. The utility model includes a frame and a filter bottle disposed within the frame, and further includes: an unlocking pop-out part disposed on the frame for popping out the filter bottle; and a locking part installed on the frame and the filter bottle for fixing the filter bottle to the frame. The unlocking pop-out part automatically pops the filter bottle out of the frame after unlocking the locking part. The unlocking pop-out part includes an unlocking component disposed on the front side of the frame. This utility model, by incorporating an unlocking pop-out part, solves the problem of existing locking pop-out structures requiring the filter bottle to be rotated in the opposite direction during unlocking. The filter bottle rotates relative to the rotating mechanism at the bottom of the frame, and because of the sealing ring, rotation is laborious, wasting operator effort and affecting filter bottle replacement efficiency.

The application discloses a current detection circuit and method for a motor driving chip, which comprises a motor driving module, a current detection module and a switch switching module. The motor driving module outputs a forward driving current, a reverse driving current and a corresponding freewheeling current; the switch switching module selects an output end point of the motor driving module to be communicated with the current detection module according to a current flow direction; the current detection module collects current information through a first triode and a second triode, carries out first proportional amplification through a third N-type power tube, carries out second proportional amplification through a third P-type power tube and a fourth P-type power tube, and then outputs a detection current from a drain of the fourth P-type power tube, which is converted into a detection voltage through an external resistor for use by an external controller or an analog-to-digital converter. The application does not need to additionally connect a detection resistor in series in a motor passage, realizes high-precision bidirectional current detection by using internal devices of the chip, and reduces passage resistance, heat loss and system cost.

The embodiment of the invention provides a cam mechanism, a shock absorber and a vehicle, and the cam mechanism comprises a cam assembly which is suitable for being in transmission connection with a driving assembly so as to rotate around a first axis under the driving action of the driving assembly; and in the rotating process of the cam assembly, the position of the first axis changes in the third direction. According to the cam mechanism provided by the embodiment of the invention, in the process that the cam assembly rotates around the first axis, due to the fact that the first axis of the cam assembly is changed, the movement stroke of the cam assembly is increased.

The invention provides a display panel for improving bonding dislocation and a preparation method thereof, and belongs to the technical field of photoelectron manufacturing. The display panel comprises a light-emitting function layer, a driving substrate and a bonding metal block, the light-emitting function layer comprises a plurality of light-emitting units arranged at intervals, each light-emitting unit is provided with a light-emitting face and a backlight face which are opposite, the light-emitting function layer is located on one side of the driving substrate, and the light-emitting face is far away from the driving substrate; the bonding metal blocks are in one-to-one correspondence with the light-emitting units, the bonding metal blocks are located on the backlight surfaces of the corresponding light-emitting units, the surface of the driving substrate is provided with contact electrodes in one-to-one correspondence with the bonding metal blocks, and the bonding metal blocks are attached to the corresponding contact electrodes; the orthographic projection of the contact electrode on the surface of the driving substrate is located in the orthographic projection of the corresponding bonding metal block on the surface of the driving substrate. According to the embodiment of the invention, the problem of easy bonding dislocation of the light-emitting unit and the driving substrate can be improved, and the preparation efficiency of the display panel is improved.

The utility model relates to an ink box detachably installed in an imaging device, the ink box comprises a box body provided with an ink cavity for containing ink, the ink box further comprises a locking part arranged on the box body, when the ink box is installed in the imaging device, the locking part abuts against the imaging device, and the locking part is used for locking the ink cavity. The ink box is locked in the imaging equipment; when the ink box is installed on the imaging equipment, the locking part abuts against the imaging equipment to limit the ink box to exit from the imaging equipment, when the ink box is locked in the ink box installation part, the ink box does not depend on the limiting component any more, or when the ink box needs to abut against the limiting component, the precision requirement and the sensitivity requirement for the limiting component can be lowered.

This invention provides an aortic pre-fenestration branch guidewire guidance system, comprising a central catheter, a capture ring, and a sliding cannula. The capture ring is connected to the outer wall of the central catheter. The sliding cannula is coaxially sleeved on the outside of the central catheter and can slide along the axial direction of the central catheter. When the sliding cannula moves proximally, the capture ring is released from the constraint of the sliding cannula and unfolds radially outward of the central catheter, thereby forming a capture opening that can accommodate the target guidewire. When the sliding cannula moves distally, the sliding cannula radially compresses the capture ring in its unfolded state, forcing the capture ring to undergo radial compression deformation. The radial compression deformation of the capture ring reduces the cross-sectional area of ​​the portion surrounding the target guidewire, thereby clamping the target guidewire and improving the success rate.

This invention belongs to the field of Internet of Things (IoT) monitoring technology and provides a method and system for real-time monitoring of road traffic conditions. The method includes the following steps: S1: measuring the vehicle flow velocity V and traffic flow C on the outermost lane of the road to be monitored; S2: calculating the total traffic flow CO of the entire one-way lane using the traffic flow C obtained in step S1; S3: calculating the moving average of M consecutive vehicle flow velocity measurements and the moving average of N consecutive vehicle flow flow measurements based on the vehicle flow velocity V and the total traffic flow CO; and S4: calculating and determining the road traffic condition. According to this invention, a low-power data acquisition design is adopted, combining vehicle flow velocity and traffic flow to determine the road traffic condition. This significantly reduces the accuracy requirements for measuring vehicle flow velocity and traffic flow, not only meeting the requirements of low-power operation but also improving the fault tolerance of monitoring, thus satisfying the needs of intelligent traffic management for secure, low-cost, refined, and intelligent traffic condition data.

This utility model discloses a pin device for a bonding apparatus, comprising a pin mechanism and a pin lifting drive mechanism. The pin mechanism is mounted on the pin lifting drive mechanism and is driven by the lifting drive mechanism to move vertically. The pin mechanism includes a mounting bracket, a housing, a pin cap, a pin, a pin seat, a lifting rod, a compression spring, a cam, and a cam drive motor. The housing is fixed to the mounting bracket, the pin cap is fixed to the upper end of the housing and has a through hole at the upper end for the pin to extend out, the pin is fixed to the pin seat, the pin seat is fixed to the upper end of the lifting rod, the lifting rod is slidably disposed within the housing in the vertical direction, the compression spring is sleeved on the outside of the lifting rod and provides a downward elastic force to the lifting rod, the lower end of the lifting rod abuts against the upper side of the cam, and the cam is driven to rotate by the cam drive motor. This utility model can conveniently control the pin lifting speed and has a low cost.

This invention discloses an in-situ suspended MEMS device for thermal conductivity testing and its fabrication method. The device structure includes a silicon substrate with a hollow central section. A ring-shaped suspended platform structure serves as a structural support film and also as an electrically and thermally insulating substrate for the polycrystalline silicon layer. On the two ring-shaped suspended platforms are a first thermopile temperature sensor, a second thermopile temperature sensor, a first metal heating electrode, a second metal heating electrode, a first pyroelectric thin film, and a second pyroelectric thin film. The first thermopile temperature sensor, the first metal heating electrode, and the first pyroelectric thin film are all located on the first ring-shaped suspended platform. The second thermopile temperature sensor, the second metal heating electrode, and the second pyroelectric thin film are all located on the second ring-shaped suspended platform. An rGO (reduced graphene oxide) thermal rectifier layer is designed within a portion of the silicon nitride to increase the temperature difference across the thermopile and improve measurement accuracy.

The application discloses a post-pulling tieback and pull hook system and a construction method, relates to the technical field of building construction, and comprises a pulling tendon arranged close to one side wall plate and at least two pull hooks arranged on the pulling tendon. One end of the pull hook is tied on the vertical tendon of the pulling tendon and the wall plate close to one side of the pulling tendon and is hooked on the vertical tendon. The other end of the pull hook is hooked on the steel bar on the wall plate away from the pulling tendon. After the pull hook is tied with the vertical tendon and the pulling tendon, the pulling tendon can be lifted, the pull hook can be obliquely pulled tight, the pull hook does not need to be bent, the tieback strength is improved, the lock sleeve or the pull hook does not need to be accurately pre-buried when the formwork is poured, the problems, such as displacement, deflection and misplacement of the pre-buried part caused by concrete vibration, are avoided, and the oblique pull hook tight mode is adopted to improve the reliability of the tieback.