1234 results about "Potentiometer" patented technology

The invention discloses a 3D (three-dimensional) rocker potentiometer assembling machine. The 3D rocker potentiometer assembling machine comprises a stander, wherein the stander is provided with a rotatable transporting tray, and the rotatable transporting tray is provided with a plurality of storage grooves for storing rocker assemblies; a mechanical hand mechanism and a rocker assembly transporting mechanism, corresponding to the storage grooves, are arranged on the surface of the stander and the periphery of the rotatable transporting tray, the stander is also provided with a controller which is connected with the rotatable transporting tray, the mechanical hand mechanism and the rocker assembly transporting mechanism, and the controller is connected with an electric control system below the stander. By adopting the 3D rocker potentiometer assembling machine, a 3D rocker potentiometer can be automatically assembled and tested; not only can the production efficiency be greatly improved compared to the manual assembling, but also the labor cost is saved.

The invention discloses a dual-mode dynamic cooperative control method and system based on pulling of a mooring line. The method comprises the steps that displacement electric signals are collected through double potentiometers; a Z-axis PWM signal is generated based on the displacement electric signal through a PWM signal generator; an XY-axis PWM signal is generated through the included angle difference between an XY rocker on the unmanned aerial vehicle and the mooring line; the Z-axis PWM signal is divided into two paths, one path is transmitted to a capstan electronic speed controller, and the other path is transmitted to the unmanned aerial vehicle and is combined with the X-axis PWM signal and the Y-axis PWM signal to form a three-dimensional control signal; setting a remote control signal and a winch potentiometer signal as well as a three-dimensional control signal and a winch manual signal as a first linkage group and a second linkage group respectively; when the first linkage group is switched on and the second linkage group is switched off, the unmanned aerial vehicle enters a first control mode; and when the second linkage group is switched on and the first linkage group is switched off, the unmanned aerial vehicle enters a second control mode. The method is used for solving the technical problems of single control mode, insufficient man-machine collaboration, poor environmental interference adaptability and limited control precision existing in traditional mooring unmanned aerial vehicle control.

The invention discloses a thin-wall plate welding deformation control tool, and relates to the technical field of machining. The cover shell is arranged at the upper end of the base shell, the sliding ejector block is arranged in the cover shell, the sliding ejector block is in linkage with the rotating cam shaft, and the thin-wall part is automatically clamped and disassembled through driving of the rotating rod. The tool is provided with a force sensitive resistor early warning system, the clamping force alarm threshold value is adjusted through an adjustable potentiometer, and deformation of the part due to excessive clamping is avoided. The tool is simple in structure, convenient to operate and suitable for batch rapid clamping and disassembling of multi-size thin-wall parts, the machining production efficiency is remarkably improved, and the precision and form and location tolerance of the parts are ensured.

The utility model discloses an ear canal embedded hearing aid, which relates to the technical field of medical instruments, and comprises a bearing assembly, the bearing assembly comprises a first packaging shell, a second packaging shell and a filter screen, a signal processing piece and a lithium battery are respectively arranged in the first packaging shell, and the second packaging shell is provided with a second packaging shell. The signal processing piece comprises a signal amplifier, a filter and a central processing unit, and a micro air pump, a control switch, a potentiometer and a microphone are installed on the right side of the first packaging shell. The beneficial effects of the utility model are that through the arrangement of the miniature air pump, the air delivery pipe and the expansion anti-skid assembly, when the ear canals of different users have large differences or need to be worn stably, the miniature air pump can be controlled to work, so that air enters the hollow rubber ring through the air delivery pipe and the delivery pipe, and the hollow rubber ring is gradually expanded to be in contact with the ear wall; therefore, the wearing stability of the bearing assembly is ensured, and the sound definition after conversion of the receiver is ensured.

The utility model belongs to the technical field of steering engines, and particularly relates to an assembly type steering engine structure which comprises a steering engine body, a motor is fixedly installed in the steering engine body, the output end of the motor is fixedly connected with a driving gear, a driven gear is arranged in the steering engine body, a planetary gear set is arranged in the steering engine body, and a planetary gear is arranged in the planetary gear set. The output end of the planetary gear set is connected with an output shaft, and a PCB is fixedly installed in the steering engine body. According to the assembly type steering engine structure, the impact resistance of the assembly type steering engine structure is effectively improved by installing the planetary gear set, when the planetary gear set moves, the rotating speed transmitted by the motor is reduced, torque is increased to enable the output shaft to rotate, and joint movement of the wrestling robot is controlled; the output stage adopts a planetary structure, the impact resistance is increased, the service life is prolonged, the transmission efficiency is improved, a PCB, a potentiometer and a motor can be placed on the same side of the steering engine, and the steering engine is more compact.

The invention relates to the technical field of robots, in particular to a dexterous hand and a robot, and solves the problem that a dexterous hand in the related technology cannot have a high degree of freedom and a small size at the same time. The dexterous hand comprises the palm base plate, the multiple finger assemblies and the multiple driving assemblies, the multiple driving assemblies drive the multiple finger assemblies to move, and therefore the dexterous hand has the high degree of freedom. The driving assembly comprises a driving source, a lead screw, a lead screw sliding block and a potentiometer, an output shaft of the driving source is connected with the lead screw to drive the lead screw to rotate, and the lead screw sliding block is in threaded connection with the lead screw and is rotationally connected with the knuckles of the finger assembly. The lead screw sliding block comprises an identification hole penetrating through the lead screw sliding block in the extending direction of the lead screw, the potentiometer penetrates through the identification hole, is connected with the side face of the driving source or the end, close to the output shaft, of the driving source and is parallel to the lead screw, the potentiometer does not need to occupy the axial space of the driving source, and the size of the dexterous hand is small. Therefore, the dexterous hand can have a high degree of freedom and a small size at the same time.

To effectively use a detection range of a potentiometer when detecting an operation position of an artificial operation tool is detected by a potentiometer in a work vehicle.SOLUTION: A work vehicle comprises: an artificial operation tool 12 that can swing around a first shaft core P1; and a potentiometer in which a free end of a detection arm 25b that can swing around a second shaft core P2 along the first shaft core P1 is connected to the artificial operation tool 12. Since the detection arm 25b is operated around the second shaft core P2 in conjunction with the artificial operation tool 12 operated around the first shaft core P1, the potentiometer detects an operation position of the artificial operation tool 12. In a first length L1 from the first shaft core P1 to a connection portion 21e between the free end of the detection arm 25b and the artificial operation tool 12 and a second length L2 from the second shaft core P2 to a connection portion 21e between the free end of the detection arm 25b and the artificial operation tool 12, the second length L2 is shorter than the first length L1.SELECTED DRAWING: Figure 7

The utility model discloses an electronic brake gear adjusting device for a water dripping wheel, which relates to the technical field of fishing gears and comprises a line cup component, a line wheel seat, a magnetic brake component, a cover plate and an adjusting operation unit. The adjusting operation unit comprises a gear adjusting rotating ring, an operation rod and a shifting piece. The gear adjusting rotating ring is rotationally installed on the inner side of the cover plate, and the operating rod penetrates through an arc groove in the cover plate to stretch out. The shifting piece is fixed to the bottom end of the gear adjusting rotating ring and sequentially triggers a plurality of toggle switches on the electric control board along with rotation of the rotating ring. According to the utility model, a discrete triggering mode that the mechanical swivel is combined with the toggle switch is adopted, traditional potentiometer adjustment is replaced, the problem of reliability caused by potentiometer abrasion is solved, meanwhile, clear gear feedback and operation hand feeling are provided for a user, and the device has the advantages of being simple in structure, long in service life and visual in operation.

The utility model relates to a rear-phase-cut single-live-wire type wall light modulator, which comprises an MOS (Metal Oxide Semiconductor) tube switch loop unit, a singlechip control unit and a direct-current power supply unit, the MOS tube switch loop unit comprises a wiring terminal J2 connected with an MOS tube Q1, a grid electrode of the MOS tube Q1 is connected with four resistors in series in sequence and then is connected with an MOS tube Q2, a drain electrode of the MOS tube Q2 is connected with a diode D2, the diode D2 is connected with a diode D1, a fixed end contact of a single-pole double-throw switch is connected with the MOS tube Q2, and two movable end contacts of the single-pole double-throw switch are connected with the wiring terminal J1 and the wiring terminal J3 respectively; the direct-current power supply unit comprises an alternating-current voltage waveform acquisition circuit, a direct-current voltage drop circuit, an overcurrent protection circuit and a filtering voltage stabilizing circuit; according to the single-chip microcomputer control unit, a linear sliding potentiometer is connected with the PC2 end of a single-chip microcomputer after being connected with a resistor in series, the linear sliding potentiometer and a rotary potentiometer are sequentially connected between the output end of the direct-current power supply unit and the ground in series, a triode Q6 is connected with a triode Q5 and then connected with the collector electrode of a triode Q7, and the base electrode of the triode Q7 is connected with the PA6 end of the single-chip microcomputer after being connected with a resistor in series.

The invention provides a non-contact type multi-direction input rocker potentiometer. The non-contact type multi-direction input rocker potentiometer comprises a base, a cover shell, a metal piece, a supporting frame, a magnetic piece, a reset spring, a rocker structure, a non-contact type Hall sensor and an FPC board. The cover shell covers the base to form an assembly space, and the reset spring is arranged in the assembly space and is coaxial with the rocker structure; an avoiding hole for the rocker structure to move is formed in the top of the cover shell; the FPC board is installed at the bottom of the inner cavity of the base, and the non-contact Hall sensor is correspondingly installed on the FPC board; the support frame correspondingly penetrates through the FPC board through a positioning pin and is connected with the base; the upper surface of the supporting frame is coaxially provided with a metal piece containing groove for containing metal pieces. A sensor accommodating groove for accommodating the non-contact Hall sensor is coaxially formed in the bottom of the support frame; and the magnetic piece is correspondingly arranged at the lower part of the inner cavity of the rocker structure and is coaxial with the non-contact Hall sensor. The rocker can accurately find the gauge midpoint, the resetting accuracy is high, and the pressing hand feeling is good.

The invention relates to the field of explosion-proof lamps, in particular to an LED explosion-proof lamp which comprises an explosion-proof lamp shell, a light source cavity is formed in the explosion-proof lamp shell, a light source plate is arranged in the light source cavity, and a plurality of cooling fins are fixedly connected to the top end of the explosion-proof lamp shell in an annular array mode. A power supply cavity and a wiring cavity are formed in the power supply shell; the dust concentration detection mechanism is used for detecting the dust concentration in the air; according to the explosion-proof lamp, the dust concentration detection mechanism, the potentiometer and the processor are arranged, the potentiometer adjusts the brightness of the light source plate according to the dust concentration detected by the dust concentration detection mechanism, so that the brightness of the explosion-proof lamp is enhanced when the dust concentration is large, the working environment brightness is improved, and workers can conveniently observe the environment; when the dust concentration is small, the brightness of the explosion-proof lamp is reduced, the power consumption is reduced, the heating value of the explosion-proof lamp is reduced, and the service life of the explosion-proof lamp is prolonged.

The present invention relates to a detachable electric multi-degree-of-freedom flexible instrument with a flexible transmission rod, comprising a reusable handheld part and a disposable front end actuator. The handheld part comprises an operating handle and a handle. The handle comprises a potentiometer for measuring the spatial orientation of the user's hand by measuring the orientation of the palm surface relative to the base. The driving part comprises a motor, a control circuit and is coupled to the front end part, and is used to convert the movement of the user's wrist and fingers into the pulling of several wires, which in turn actuate the multi-degree-of-freedom swing of the front end flexible joint and the opening and closing of the jaws.

The invention discloses a hysteresis comparator circuit capable of externally setting a threshold value, which comprises an input voltage ui, a positive and negative threshold voltage preset circuit, comparators A1, A2 and A3 and an A3 in-phase end voltage bias circuit, an output voltage uo, + / -Vcc and + Vcc are connected with-Vcc through a resistor R1, potentiometers P1 and P2 which are connected in parallel, a resistor R2 and form the positive and negative threshold voltage preset circuit, the sliding end of P1 is connected with the anti-phase end of A1, and the sliding end of P2 is connected with the anti-phase end of A3. The sliding end of the P2 is connected with the anti-phase end of the A2, the voltage ui is connected with the in-phase ends of the operational amplifier A1 and the operational amplifier A2 at the same time, the output end of the A1 is connected with the in-phase end of the operational amplifier A3 through the R3, the output end of the operational amplifier A2 is connected with the in-phase input end of the operational amplifier A3 through the resistor R4, the anti-phase input end of the operational amplifier A3 is connected with the working ground, and the output end of the operational amplifier A3 is connected with the in-phase input end of the operational amplifier A3 through the resistor R5. And the output end of the operational amplifier A3 outputs the output voltage uo.

The invention discloses a stove firepower display control method, a stove and a range hood. The stove firepower display control method provided by the embodiment of the invention is applied to the stove. The cooker comprises a mechanical knob and a potentiometer. The mechanical knob is connected with the potentiometer. And when the mechanical knob rotates, the potentiometer is driven to rotate synchronously, so that the resistance of the potentiometer is changed. The stove is in communication connection with the range hood. The range hood comprises a control panel. The control method comprises the steps of obtaining output voltage of the potentiometer; determining the gas flow of the cooker according to the output voltage; and the gas flow is sent to the range hood, so that the firepower state corresponding to the gas flow is displayed through the control panel. Therefore, the firepower state of the kitchen range can be used as visual data to be displayed on the control panel of the range hood, and the problem that a user is difficult to accurately and timely identify the firepower condition of the kitchen range is effectively solved.

The invention relates to an electric control system test board for engineering equipment, which comprises a test box, a comprehensive controller, an operation control box, a closed pump control box and a computer, the test box is connected with a tested electric control system through a test cable, and the electric control system is tested by pulling a toggle switch on a panel of the test box or rotating a single-circle carbon film potentiometer. An analog switching value or an analog quantity electric signal is transmitted to a tested electric control system and processed by an electric control system controller to control a corresponding system state indicating lamp on the test box to be lighted so as to test the correctness, stability and safety of the function of the electric control system, and the system can be operated by a single person, is simple and convenient to operate, is high in test response speed, and is visual and clear in test result. Powerful support is provided for early-stage performance analysis, system design, test verification and production delivery of the electric control system of the engineering equipment, so that the production quality of the engineering equipment is continuously improved, the time, manpower and material cost is reduced, and the development and production cycle is shortened.

The flushing valve comprises a valve body and a pressure sensing assembly, the valve body is provided with a water inlet end, a water outlet end and a water passing cavity communicated with the water inlet end and the water outlet end, one side of the valve body is provided with a pressure sensing channel, the pressure sensing channel is communicated with the water passing cavity, and the pressure sensing assembly comprises a piston rod, an elastic piece and a potentiometer. The piston rod is arranged in the pressure sensing channel and arranged in the axial direction of the pressure sensing channel, the elastic piece provides axial elastic force for the piston rod, the direction of the elastic force is opposite to the water inlet direction of the pressure sensing channel, a movable contact of the potentiometer is connected with the piston rod, and water pressure in the pressure sensing channel can drive the piston rod to overcome the elastic force to push the movable contact. Water enters the pressure sensing channel and pushes the piston rod, the piston rod compresses the spring and pushes the potentiometer, the resistance voltage of the potentiometer generates related changes, and water pressure detection is achieved.

The utility model discloses a novel accelerator control device. The device comprises a knob mechanism; the first rotating shaft is sleeved on the knob mechanism and is clamped with the knob mechanism; the turntable is arranged on the side wall of the lower end of the first rotating shaft; a shading sheet is arranged on the bottom surface of the turntable; the circuit board is arranged below the turntable, and the lower end of the knob mechanism penetrates through the circuit board, is movably connected with the circuit board and does fixed-axis rotation movement relative to the circuit board; the photoelectric coded disc is arranged on the top surface of the circuit board, is opposite to the anti-dazzling screen and is used for being matched with the anti-dazzling screen to output an electronic signal; and the potentiometer is arranged on the bottom surface of the circuit board, abuts against the lower end of the knob mechanism, rotates synchronously with the knob mechanism and is used for outputting an electronic signal. According to the novel accelerator control device, dual protection can be conducted on the control signal, the accurate and stable accelerator control signal is output, wrong signal output can be effectively avoided, and the working efficiency and the safety coefficient of a vehicle are improved.

The invention discloses a low-self-heating constant-temperature-difference control circuit and method for compensating process errors of a thermal flowmeter. The low-self-heating constant-temperature-difference control circuit comprises a heating resistor, an environment temperature resistor, a control resistor, a starting resistor, a first potentiometer, a second potentiometer, first to sixth resistors, a triode, a first operational amplifier, a second operational amplifier, a third operational amplifier and a power source. The third operational amplifier controls a Wheatstone bridge composed of the first resistor, the second resistor, the heating resistor and the environment temperature resistor as main bodies to be in a balanced state through negative feedback regulation; the third resistor, the fourth resistor, the fifth resistor and the sixth resistor reduce the heating power of the environment temperature resistor through voltage division, resistance values of the first potentiometer and the second potentiometer are adjustable, and errors of resistance values and temperature coefficients generated in the machining process of the heating resistor and the environment temperature resistor can be compensated. According to the invention, the overheating temperature of the heating resistor can be more accurately controlled to be constant, so that the measurement precision is improved.

The invention provides a rear-phase-cut single-live-wire type wall light modulator. The rear-phase-cut single-live-wire type wall light modulator comprises an MOS tube switch loop unit, a single-chip microcomputer control unit and a direct-current power supply unit. Wherein the direct current power supply unit comprises an alternating current voltage waveform acquisition circuit, a direct current voltage drop circuit, an overcurrent protection circuit and a filtering voltage stabilizing circuit. The single-chip microcomputer control unit comprises a single-chip microcomputer, a potentiometer, a triode Q6, a triode Q5 and a triode Q7, the PC2 end of the single-chip microcomputer is connected with the potentiometer, when the resistance value of the potentiometer changes, the voltage collected by the PC2 end changes, and the PA6 end of the single-chip microcomputer outputs different voltage signals to control the on-off of the triode Q6, the triode Q5 and the triode Q7 so as to adjust the on-off time of the MOS tube; the output end of the alternating current voltage waveform acquisition circuit is connected with a PC1 port of the single chip microcomputer to provide a phase reference; after alternating current passes through the direct current power supply unit, 5V direct current is output and is connected with a VDD end of the single chip microcomputer to supply power to the single chip microcomputer; the light modulator can stably modulate light at low brightness.

Embodiments of the present disclosure provide for a light emitting apparatus comprising a housing portion that is rotatably coupled to a base portion, wherein the housing portion is adjustable on two axes of rotation. In certain embodiments, the housing portion may be selectively disconnected from the base portion. The light emitting apparatus may comprise at least one LED operably engaged with at least one LED driver and a potentiometer to enable a selectively variable lumen output. In accordance with certain embodiments, the housing portion comprises at least one lens portion configured to enable one or more interchangeable / modifiable beam spread optics.

A sliding cover for a liquid delivery device, such as a cap (100) for a pen injector (200), incorporates a set of sensors including an optical sensor (110) with an output which changes during uncapping or capping motions on passing of a plunger (220) of the pen injector. This output is used together with a position sensor (120) to determine the position of the plunger along a cylinder (210) of the liquid delivery device. By monitoring changes in the plunger position, the quantity of dosages delivered by the liquid delivery device can be determined, displayed, stored and / or transmitted to an external device for further data processing or storage. Preferred implementations of the invention employ optical sensors with a converging beam (115), and / or position sensors employing linear potentiometer strips (132).

The invention provides a copper-nickel-tin alloy strip and a preparation method thereof, and relates to the technical field of copper alloys. The copper-nickel-tin alloy strip provided by the invention comprises the following components in percentage by mass: 8.5%-10% of Ni, 1.5%-3% of Sn, 0.5%-1.5% of Al, 0.3%-0.6% of Si, 0.19%-0.21% of Cr, 0.05%-0.30% of Mn and the balance of Cu. The tensile strength of the copper-nickel-tin alloy strip ranges from 580 MPa to 770 MPa, the percentage elongation after fracture A50 is larger than or equal to 8%, the hardness ranges from 170 HV to 240 HV, the electric conductivity is larger than or equal to 10% IACS, and the grain size is smaller than or equal to 0.015 mm. And the material can be stably applied to elastic sensitive elements of electronic industrial relays, potentiometers, switches, connectors, lead frames, control and instrument sensors and the like.

The invention provides an oil tank truck tank body inner wall cleaning robot and a control method, and the cleaning robot comprises a robot body which comprises a machine body, a plurality of advancing legs, a steering engine and a potentiometer; the advancing legs are arranged in parallel, so that the robot body can climb over a wave-proof plate in the tank body; the cleaning assembly comprises an electric telescopic rod, a high-pressure hydraulic rotating nozzle and a telescopic water conveying pipe, one end of the telescopic water conveying pipe is connected with the high-pressure hydraulic rotating nozzle, and the other end of the telescopic water conveying pipe is connected with a conveying pump; the camera is used for acquiring an internal image of the tank body and judging the cleaning degree and / or the cleaning effect in the tank body; the laser radar is used for acquiring a three-dimensional point cloud image in the tank body so as to construct an environment map in real time and locate the position of the robot; the robot body further comprises a main control board, an inertial measurement unit module and a network communication assembly. The automatic cleaning device can overcome the limitation of the material of the tank body and realize the automatic cleaning of the inner wall of the tank body of the oil tank truck with the washboard.

The invention discloses a foot game controller which comprises a six-end shaft, and the six-end shaft comprises a left shaft, a right shaft, a front shaft and a rear shaft. A pedal is arranged above the six-end shaft, a pair of upper supporting frames are arranged on the lower surface of the pedal, first connecting rods are arranged at the two ends of the left shaft and the right shaft, second connecting rods are hinged to the ends of the first connecting rods and connected with compression spring force application rods, and compression spring devices are arranged at the ends of the compression spring force application rods. A second potentiometer is arranged on one side of the upper support frame; a lower plate is arranged below the six-end shaft, a pair of lower supporting frames are arranged on the upper surface of the lower plate, the ends of the front shaft and the rear shaft are connected with torsion spring devices, and first potentiometers are arranged on the lower supporting frames. And the first potentiometer and the second potentiometer are electrically connected with the main control board. The game controlled object is controlled by treading the pedal, and the method is suitable for people with inconvenience in two hands or disabled hands and is also suitable for the scene that fingers need to frequently switch and operate a plurality of keyboard buttons.

The invention relates to a PID (Proportion Integration Differentiation) control inertial servo system and a control method. The PID control inertial servo system comprises a controller, a control circuit, a driving circuit, a motor, a potentiometer, a system clock, a timer, an analog-to-digital converter, a plurality of serial ports, a communication bus, main control equipment, a steering engine, a fuzzy PID control module, a sampling module, a current sensor, a linear quadratic regulator, a PWM (Pulse-Width Modulation) duty ratio module and an integration module, the control circuit comprises a control chip; the driving circuit comprises a first driving circuit and a second driving circuit; the first driving circuit comprises a driving chip; and the second driving circuit is electrically connected with the motor and is provided with a plurality of switches. On the basis of position closed-loop feedback, with the fuzzy PID control algorithm as the core, optimal system parameters are obtained through a linear quadratic regulator, and compared with traditional PID control, fuzzy PID control has higher control precision, stability and response speed.

The utility model discloses a digital display compass which comprises a left foot, a right foot and a shell arranged on the upper portion of the left foot and the upper portion of the right foot, a circuit board, a battery, a potentiometer, a first rotary disc and a second rotary disc are arranged in the shell, the first rotary disc and the second rotary disc can rotate relatively, a display screen is arranged on the surface of the shell, and one side of the first rotary disc extends downwards to form the right foot. A potentiometer is mounted in the middle of the first turntable; a circular sliding chute is formed in the first turntable by taking a rotating shaft of the potentiometer as a circle center; the side, opposite to the right foot, of the second rotating disc extends downwards to form a left foot, a prism used for inserting a rotating shaft of the potentiometer is arranged in the middle of the second rotating disc, and a sliding rail matched with the sliding groove is arranged on the second rotating disc with the prism as the circle center. The resistance value in the potentiometer changes along with the distance between the left foot and the right foot and is displayed through the display screen after A / D conversion, and when a circle is drawn, the arc attaching position of the sliding groove and the sliding rail disperses force acting on the first rotary disc and the second rotary disc, so that relative rotation is not prone to occurring when the circle is drawn, and the circle drawing device is more stable and reliable.

1. The name of this design product: magnetically encoded potentiometer. 2. Purpose of this design product: used to adjust voltage and current. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The invention discloses a capacitive gate roof displacement sensor, and belongs to the technical field of coal mine roof monitoring, the capacitive gate roof displacement sensor comprises an anchoring part and a measuring part, the anchoring part comprises a first anchoring part and a second anchoring part, the first anchoring part is used for being anchored at the preset depth of a roadway roof drill hole, and the second anchoring part is used for being anchored at the orifice position of the roadway roof drill hole; the measuring part comprises a capacitive grating sensor, the capacitive grating sensor comprises a grating ruler assembly, the grating ruler assembly comprises a fixed grating and a movable grating, the fixed grating is fixedly connected with the first anchoring part, and the movable grating is fixedly connected with the first anchoring part. The capacitive grating sensor is adopted as a core monitoring component, is based on a variable area working principle, is less influenced by voltage fluctuation, is not easy to cause a data fluctuation problem, does not have inherent sliding noise of a rotary potentiometer, and solves the problem of data instability caused by the sliding noise of the rotary potentiometer. The misjudgment layer separation phenomenon of the monitoring system caused by abnormal data is avoided, and the accuracy and reliability of monitoring analysis of the system are improved.

The utility model discloses a novel linear sliding potentiometer which comprises a base, a PCB, a sliding piece, an upper cover and a plurality of terminal pieces, the sliding piece is arranged between the base and the upper cover in a sliding mode, a carbon film is arranged on the upper surface of the PCB, a contact piece is fixedly arranged at the position of the sliding piece, and the contact piece is in sliding contact with the carbon film on the upper surface of the PCB. The terminal piece is inserted in the connecting through hole of the PCB, and the terminal piece and the PCB are embedded in the base. According to the linear sliding potentiometer, the structural design that the PCB and the terminal piece are embedded in the base is adopted, compared with the prior art, the structural design is more convenient to produce and manufacture, the production and manufacturing process of the linear sliding potentiometer is effectively and further simplified, and therefore the production efficiency is improved.

The utility model discloses an electric rail transportation all-in-one machine for rail transportation, which comprises an electric monorail vehicle propeller, the electric monorail vehicle propeller comprises a motor and a control box arranged on the motor, and the control box is composed of a control box base and a control box upper cover. The control box is formed by combining and fixing a control box base and a control box upper cover through a sealing gasket, a first hexagon socket cap screw and a flat spring washer; a 12mm metal button switch is arranged on the right side edge of the control box, a 25mm forward and backward switch and a potentiometer knob are arranged at the tail of the control box, the potentiometer knob is connected with a waterproof potentiometer in the control box, and an FDK2730C-SL controller, a cable gland, a GX12 aviation plug and a ship networking module are arranged in the control box. And the control box base is fixed with the motor shell through a second hexagon socket cap screw and flat spring washer combination. Through the integrated electric control box module, the product also has the functions of remote control operation, intelligent scheduling and the like, the labor force of the orchard is ensured, and the working efficiency is improved.