450 results about "Positive direction" patented technology

The invention provides wafer detection equipment and a wafer detection method, which are used for solving the problem of how to improve the wafer detection efficiency. The wafer detection equipment comprises a double-sided detection unit, the double-sided detection unit comprises a scanning carrying platform, a front optical imaging module and a back optical imaging module, and the scanning carrying platform can linearly move along a first direction; the front optical imaging module and the back optical imaging module are respectively arranged on two opposite sides of the scanning stage and are respectively provided with a back bright field light source and a back dark field light source; when the scanning stage moves along the positive direction of the first direction, the front bright field light source and the back bright field light source are synchronously turned on, and the front optical imaging module and the back optical imaging module respectively generate bright field images of the front and back of the wafer; and when the scanning stage moves along the negative direction of the first direction, the front and back dark field light sources are synchronously turned on, and the front optical imaging module and the back optical imaging module respectively generate dark field images of the front and back of the wafer.

The invention discloses a fabric draping form three-dimensional quantification method, and belongs to the technical field of fabric draping form quantification, and the method comprises the steps: carrying out the three-dimensional scanning of a fabric sample, constructing a draping three-dimensional model of the fabric sample, determining the maximum dissectable distance of the draping three-dimensional model, selecting the sectioning step length, and calculating the number of sectioning layers. Determining the number of horizontal section cutting planes parallel to the horizontal reference plane, and dividing the three-dimensional suspension model into a plurality of suspension sub-models along the positive direction of the normal axis; calculating an orthogonal projection area and an orthogonal projection contour perimeter of each suspension sub-model on a horizontal reference plane according to the coordinates of all surface vertexes of each suspension sub-model, and further calculating a layered suspension index of each suspension sub-model; and taking the arithmetic mean value of the layered drape indexes of the drape sub-models as a drape index for quantifying the drape form of the fabric sample. According to the method, the problems of dimension deficiency and insufficient quantization precision in the prior art can be solved, and fine quantization of the drape form is realized.

The invention discloses a traveling wave fault positioning method and system for a full parallel AT power supply traction network, and belongs to the field of railway traction power supply system relay protection. The method specifically comprises the following steps: after the full parallel AT power supply traction network has a fault, firstly, analyzing the characteristics of an AT station fault initial current traveling wave, and determining a fault line by using the amplitude of the AT station fault initial current traveling wave; then, the polarity of the fault initial current traveling wave and the fault initial voltage traveling wave of the AT station fault line is used for judging the fault direction; and finally, calculating the fault distance by selecting a positive direction or negative direction distance measurement formula according to the moment when the fault initial voltage traveling wave arrives at the outlet of the traction substation, the AT station and the subarea station and the fault direction information. According to the method, only fault initial traveling wave information is utilized, wave head identification is not needed, wave velocity parameters are not needed, and simulation results show that the positioning method not only can provide fault distance, but also can provide fault line information, is convenient for maintainers to quickly find fault points, and has extremely high robustness and accuracy.

The invention discloses a magneto-rheological polishing method for the inner surface of a spiral pipe, which comprises the following steps of: placing the spiral pipe at a driving end to realize autorotation, and adjusting a gap between adjacent magnets on a sliding rail table below the spiral pipe through each independent moving seat, so that the gap between the adjacent magnets is the spiral pipe lead; the spiral pipe starts to rotate slowly, the movable seat drives the magnets to move gradually from the right end to the negative direction of the X axis, and when the end face of a right pipe opening of the spiral pipe faces the positive direction of the Y axis, the first magnet comes to the position under the first ring of the pipe fitting; when the end face of the right pipe opening of the spiral pipe faces the positive direction of the Z axis, the magnetorheological polishing liquid is guided in. According to the polishing method ingenious in design, the spiral pipe is driven to rotate, the magneto-rheological polishing liquid is arranged in the spiral pipe, meanwhile, the magnet capable of horizontally moving is designed below the spiral pipe and synchronously moves along with rotation of the spiral pipe, and therefore the magneto-rheological polishing liquid can fully polish the whole inner wall of the spiral pipe.

The invention relates to a variable-curvature vertical curve pushing fulcrum elevation adjustment optimization method, which comprises the following steps of: taking a bridge midline design datum line as an x axis, and taking a pushing advancing direction as an x-axis positive direction; the vertical direction is used as the z axis, the vertical upward direction is used as the z axis positive direction, the x coordinate represents the longitudinal position of the pushing beam, and the z coordinate represents the distance of the pushing beam deviating from the design datum line; the optimization method comprises the following steps: S1, smooth incremental analysis calculation; s2, fulcrum elevation adjustment; and S3, fulcrum elevation adjustment and integration. According to the method, optimization analysis can be quickly carried out according to existing incremental launching beam body parameters, so that the calculation cost is remarkably reduced, the calculated fulcrum elevation adjustment amount is smaller, and the economic benefit and the construction efficiency are improved.

The invention discloses an April Tag positioning and attitude resolving method based on an LM algorithm, and belongs to the technical field of computer vision, and the method comprises the following steps: 1) carrying out camera calibration on a camera for positioning; 2) an April Tag graph is arranged on a carrier plane needing to be positioned, and a camera is used for shooting; (3) the shot April Tag image is subjected to preprocessing; 4) analyzing the preprocessed April Tag graph, and marking the image; 5) carrying out preliminary attitude calculation on the image; 6) performing iteration by using an LM algorithm; and 7) constructing a three-dimensional coordinate system for representing the attitude of the camera, drawing an arrow on the image, and displaying the deflection direction of the arrow and the camera. The method has the beneficial effects that the attitude calculation result is more accurate by using the LM algorithm for iteration, and the accuracy of the attitude calculation is improved by calculating and drawing the arrow of the deflection angle. And the deflection difference between the direction of the carrier on a two-dimensional plane and the positive direction of the camera can be more intuitively and conveniently seen.

The invention provides a multi-stage protection method and device for a power distribution network, a storage medium and electronic equipment. The method comprises the following steps: determining a current setting value of each stage of fault short circuit of each circuit breaker in the power distribution network and an operation parameter of a distributed power supply; a detection current flowing through a target circuit breaker is obtained, the current direction of the detection current is determined, and the target circuit breaker is one of multiple circuit breakers in the power distribution network; when the current direction of the detection current is the positive direction and the measured value of the detection current is greater than the corresponding setting value, disconnecting the target circuit breaker; and under the condition that the current direction of the detected current is the reverse direction, the target circuit breaker is controlled to be switched on or switched off according to the distance between the target circuit breaker and the fault point. According to the method, a current adaptive protection mechanism is utilized, a direction criterion is introduced, the phenomena of protection operation refusal and maloperation caused by high-proportion DER access to the power distribution network are reduced, and the fault processing level of the power distribution network and the reliability of power supply are improved.

The embodiment of the invention provides a zero point learning method and device for a braking system, and relates to the technical field of motor control, and the method comprises the steps: obtaining a starting signal of braking voltage buildup zero point learning, the starting signal of braking voltage buildup zero point learning being generated based on vehicle power-on or vehicle power-off; the motor controls the piston to move forward from a target position by adopting a set moving method, the forward direction is the direction of the brake disc relative to the piston, and the set moving method is used for controlling the speed change of the piston; in the moving process, motor movement data of the motor are collected, real-time change data of the motor movement data are analyzed, if the real-time change data meet the set movement condition, the current position data, corresponding to the real-time change data, of the piston serves as the braking zero point, and the set movement condition is that when the motor passes through the braking zero point in the movement process, the current position data of the piston is changed into the braking zero point. The generated empirical data is obtained. According to the method, zero point learning and correction can be flexibly and conveniently carried out, and the driving safety is improved.

The invention provides a PEC detection method and device for the position and depth of a blind hole of a 304 steel plate under an insulating layer. The method comprises the following steps: firstly, placing a PEC probe above an original point of a to-be-detected area, detecting a blind hole along an X axis, and recording a distance R1 and a depth H1; then, the probe moves R / 2 to a detection point 2 in the positive direction of the X axis, and R2 and H2 are recorded; then, moving R / 2 to a detection point 3 along the positive direction or the negative direction of the Y axis, and recording R3 and H3; and obtaining the coordinates and the depth H of the blind hole through calculation. In the process, Z-Score standardization and PCA dimension reduction are carried out on PEC signals, a CI-I GA-BP model 1 is used for evaluating the blind hole distance R1 to obtain a blind hole distance evaluation value, features obtained after PCA dimension reduction are extracted and fused with the blind hole distance evaluation value, a CV-I GA-BP model 2 is used for evaluating fused data, and finally a blind hole depth evaluation value is obtained. The detection device comprises a rack; provided is an encoder track detection device. The technical scheme has the advantages of high accuracy, high efficiency, environment friendliness and the like when the blind hole of the 304 stainless steel plate is detected.

The invention discloses a machining auxiliary platform, and relates to the technical field of workshop machining auxiliary platforms. The device comprises a bottom plate, supporting legs are fixed to the two sides of the bottom surface of the bottom plate, a motor is fixedly installed on the left side of the top surface of the bottom plate, triangular rings are fixed to the two sides of the top surface of the bottom plate, threaded rods are rotatably installed on the inner walls of the two triangular rings, and a rotating shaft of the motor is fixed to the middle of the left side of each threaded rod; four L-shaped supporting plates are fixed to the two sides of the top face of the bottom plate, two long rods are fixed to the tops of the opposite faces of the four L-shaped supporting plates, a protruding block is rotationally installed on the left side of the outer wall of a threaded rod, and the protruding block is meshed with threaded teeth of the threaded rod in the positive direction. According to the machining auxiliary platform, small or thin mechanical workpieces can be clamped through the T-shaped clamping plates, and the problem that the small or thin mechanical workpieces are difficult to machine due to the fact that clamping of the machining auxiliary platform is inconvenient is solved.

The invention discloses a three-axis differential implementation method based on cross symmetry of double inertial sensors, and the method comprises the following steps: S1, a sensor is an MEMS inertial measurement unit, i.e., an IMU, the IMU uses a right-hand Cartesian coordinate system to define the directions of three sensitive axes of the IMU, and the IMU is used for defining the positive direction of an angular velocity and also used for defining the positive direction of a linear acceleration; s2, in order to realize three-axis difference, rotating the sensor around the y axis by 180 degrees; s3, a result obtained in the step S2 is rotated by 90 degrees around the z axis; and S4, after the step S3, realizing symmetry of the x axis and the y axis through crossing, and realizing three-axis difference through double IMUs by applying a three-axis symmetry principle of an inertial sensor.

The invention provides a non-orthogonal tilt-rotor aircraft and a flight control method thereof, a tilt shaft at the lower end of a tilt nacelle is obliquely arranged, and the tilt shaft is parallel to an XZ plane, forms an angle of 45 degrees with an X axis and a Z axis, and is not orthogonal to an XY plane and a YZ plane of a fuselage coordinate system; the positive direction of the X axis is backward along the course, the positive direction of the Y axis is rightward along the course, and the positive direction of the Z axis is upward along the vertical direction. According to the invention, the transverse stability augmentation effect can be provided, the transverse stability is improved, and the problem of unstable pitching of the fuselage caused by tilting of the rotor nacelles can be avoided.

A 3D shape matching method and a 3D shape matching device based on 3D local feature description using SGHs are provided. In the method, the spherical neighborhood of the feature point is not only divided based on space but also divided based on geometry, the spherical neighborhood of the feature point is not only divided based on the radial direction and the azimuth respectively but also divided based on the elevation, and the spherical neighborhood of the feature point is not only divided based on the deviation angle deviating from the z axis but also divided based on the deviation angle deviating from the x axis. When the deviation angle deviating from the z axis of the spherical neighborhood is divided, the deviation angle is divided more densely where it is closer to the positive direction of the z axis.

The invention discloses a conjugate differential interference self-correction method for a large-size plane variable-pitch grating, and belongs to the technical field of optical measurement, and the method comprises the steps: enabling the variable-pitch grating to be in a Littrow auto-collimation state, and measuring the positive and negative first-order diffraction wavefront of the variable-pitch grating through a laser topography interferometer; performing differential operation on the positive and negative first-order diffraction wavefronts; moving the variable-pitch grating by a displacement alpha along the positive direction of the X axis, measuring positive and negative first-order diffraction wavefronts at the moment, and performing differential operation; moving the variable-pitch grating by a displacement alpha along the negative direction of the X axis, measuring positive and negative first-order diffraction wavefronts at the moment, and performing differential operation to obtain a second displacement differential wavefront; and performing interference pseudo-shearing operation by using the initial differential wavefront, the first displacement differential wavefront and the second displacement differential wavefront, and solving a variable pitch parameter by using a least square method. According to the invention, the measurement efficiency and precision of the large-size planar two-dimensional variable-spacing grating are obviously improved.

To facilitate lifting of narrow stairs.SOLUTION: A lifting auxiliary device 10 includes a body 11, a first support part 12, and a belt body 14. In the body 11, its longitudinal direction is a Z-axis direction. In the belt body 14, one end is connected to the body 11 or the first support part 12, and the other end is inclinable in a Y-axis negative direction based on the body 11. The first support part 12 is provided so as to project in an X-axis positive direction and negative direction from the body 11. The first support part 12 has a pair of first engagement parts which are engaged so as to be attachable / detachable to / from a conveyance machine for conveying a conveyance object. The length in an X-axis direction of the first support part 12 is equal to or less than the length in the X-axis direction of the conveyance machine.SELECTED DRAWING: Figure 1

The utility model relates to welding strip reel carrying and boxing equipment which comprises an equipment rack, and a reel feeding assembly and an empty box feeding assembly are arranged on the equipment rack. A carrying gantry assembly is arranged on the equipment rack, the cutter card boxing assembly and the reel boxing assembly move on the carrying gantry assembly in the Y-axis direction, and a cutter card supply assembly is arranged on the side, in the positive direction of the X-axis, of the empty box feeding assembly. According to the utility model, the cutter card supply assembly, the cutter card encasement assembly and the reel encasement assembly are mutually matched, the upper cutter card and the lower cutter card are added in the packing box for separation treatment, and then the solder strip reel is placed in the packing box, so that the position of the solder strip in the packing box is more stable.

The invention relates to an adjustable, single-stroke vane pump (1) for generating a pressure medium flow for a consumer (2), comprising a pump housing (3) in which an adjustable cam ring (4) is inserted and comprising a rotor (5) and a drive shaft (6) which are rotatable within the cam ring (4). The rotor (5) carries vanes (7) which form working chambers (8) between the rotor (5) and the cam ring (4). A suction connection (9) and a pressure connection (10) for a pressure medium are formed between the rotor (5) and the cam ring (4). Furthermore, an adjusting device (17) is provided for changing the eccentricity of the cam ring (4) relative to the rotor (5). The adjusting device (17) is designed such that an adjustment of the eccentricity of the cam ring (4) between a positive and a negative eccentricity is possible.With a positive eccentricity, the cam ring (4) is shifted from a zero eccentricity in a positive direction such that, upon rotation of the rotor (5) in a first direction of rotation (18), the pressure medium flows into the working chambers (8) through the suction port (9) and flows out through the pressure port (10). With a negative eccentricity, the cam ring (4) is shifted from a zero eccentricity in a negative direction opposite to the positive direction.

A micro-nanoscale additive manufacturing method, and a patterning method. The additive manufacturing method uses an electric field to control directional movement of a charged dispersed phase in a gas. The charged dispersed phase passes through hollow channels in a hollow pattern layer on a substrate, and moves and builds up on the substrate, forming a printed pattern having a smaller feature size than that of the hollow channels. The substrate is an insulating substrate, the electric field strength value at the printing position is controlled to be not lower than 15000 V / cm, and the electric field strength direction is a positive direction or a negative direction.

To detect a physical quantity correlated with angular acceleration of a rotating shaft using a retrofittable rotation measuring device.SOLUTION: A sub-base 12 is bound to a main base 11 in which a rotating shaft 500 is inserted into a hollow section 111, and a rotation detector 1 is fixed to the rotating shaft 500. A first acceleration sensor 161 and a second acceleration sensor 162 that respectively detect acceleration in a tangential direction of a circle centered on a set axis C passing through the positions with a direction heading to a same rotational direction as a positive direction are provided at the two positions on the main base 11 which are line-symmetrical with respect to the set axis C overlapping with a rotational center axis of the rotating shaft 500 in the time of fixation. 1 / 2 of an addition value of the output of the first acceleration sensor 161 and the second acceleration sensor 162 is detected as tangential acceleration due to angular acceleration of the rotating shaft 500.SELECTED DRAWING: Figure 5

The invention provides a color enhancement method based on an image brightness gain, and the method comprises the steps: S1, inputting a YUV color image, and obtaining an original brightness image y; s2, brightness enhancement: enhancing the brightness image y by adopting histogram equalization to obtain an enhanced image Y; s3, calculating a weighting curve, and calculating a Gauss weighting curve according to a preset parameter delta; s4, gain calculation: calculating a brightness gain according to the change of each pixel position before and after brightness enhancement; s5, color enhancement: carrying out color enhancement on the input u and v data images to obtain enhanced chrominance component images U and V; s5.1, the UV component deviates in the negative direction, the input u data and v data are deviated, the deviated data u'and v 'are obtained, and the formulas are u' = u '-128 and v' = v-128; s5.2, UV component enhancement is carried out, u and v data images are enhanced by using the brightness gain yGain2, and the formula is u '= u' * yGain2 and v '= v' * yGain2; and S5.3, the UV component is shifted in the positive direction, the enhanced color component is subjected to data shifting again, final U and V numerical values are obtained, and the formulas are U = u '+ 128 and V = v' + 128.

The embodiment of the application discloses a kind of construction method and simulation equipment of simulating traffic flow, it can be applied to the field of automatic driving simulation test, the method comprises: first, for different simulation test purposes, the traffic scene library that meets the test demand is constructed in positive direction, the number of each traffic scene file in traffic scene library, the proportion of traffic scene file belonging to different traffic scene type can be customized, high flexibility, compared with collecting real traffic flow data, without labeling, low cost, easy to obtain, and consider comprehensive, not limited by the collection data, can guarantee test completeness;Second, simulation equipment reads traffic scene file from traffic scene library in turn, and controls simulation vehicle to transition from the initial state of last scene to the terminal state of current scene, realize the continuous distribution of different simulation scenes, so that the simulation traffic flow generated can cover the test part of different scene continuous switching;Finally, for each simulation scene, the corresponding test result is generated in real time, high efficiency.

A spacecraft thruster distribution and pulse width modulation method based on a dynamic inverse matrix comprises the following steps: calculating a torque matrix generated by each thruster in combination with the installation position, the thrust size and the thrust direction of the thruster; the control direction of each thruster is determined, and grouping is carried out according to the control directions of the thrusters; a thruster for controlling the three-axis positive direction is pre-selected, a torque matrix corresponding to the pre-selected three-axis positive axial thruster is generated, and the air injection pulse width duration of the three axes is calculated in combination with instruction control torque; according to the calculated symbol of the three-axis jet pulse width duration, reselecting a thruster, and obtaining a dynamic torque matrix of the reselected thruster; according to the instruction torque sent by the upper computer and the dynamic torque matrix of the reselected thrusters, the jet pulse width duration of each thruster is calculated based on a matrix inversion algorithm; the thruster pulse width modulation method is designed on the basis of considering the coupling influence of the three axes of the thruster, and can adapt to the large-range change of the mass center of the aircraft.

The invention discloses a control method, a control device, a transportation system and a nonvolatile computer readable storage medium. The method is applied to the transportation system, the transportation system comprises a plurality of assembly lines and a transfer device, the assembly lines are used for transporting target goods, and the transfer device is used for transferring the target goods in the assembly lines. The transfer device comprises a first motor, a first conveying belt, a first in-place sensor and a second in-place sensor, and the first motor is used for driving the first conveying belt to move; the control method comprises the steps that the target rotation direction of a first motor is determined based on the current assembly line where the transfer device is located, and when the first motor rotates in the target rotation direction, the movement direction of a first conveying belt is matched with the movement direction of the current assembly line; based on the target rotation direction, the first detection information of the first in-place sensor and the second detection information of the second in-place sensor, the first motor is controlled to ensure that the positive direction of the transfer device is always along the process direction, so that the operation difficulty is relatively low.

The utility model discloses a screwing device which comprises a screwing assembly, and the screwing assembly comprises a clamping mechanism, a lifting mechanism and a rotating mechanism. The rotating mechanism is arranged above the clamping mechanism and used for driving the clamping mechanism to rotate, the lifting mechanism is arranged on the side of the clamping mechanism and used for driving the clamping mechanism to move up and down, and the clamping mechanism is used for clamping the cup body. The clamping mechanism, the lifting mechanism and the rotating mechanism are arranged, in the automatic production process of the vacuum cup, a positioning clamp is matched in an auxiliary mode, a cup body is positioned on and taken down from the positioning clamp through rotation in the positive direction and the negative direction, the positioning scheme is simple and efficient, the implementation cost is low, and the production efficiency is improved.

This invention provides a target contour extraction method, system, device, and storage medium, relating to the field of image processing technology. The target contour extraction method includes: acquiring a target image and processing it to obtain a region of interest (ROI); within the ROI, processing to obtain the gradient of pixels and the intensity and orientation fields of the gradients; extracting multiple starting points based on the intensity and orientation fields of the pixels; processing multiple contour points based on the starting points; and obtaining the target contour of the target image based on the contour points. This invention effectively avoids the problem in existing methods of failing to achieve good contour detection results without prior geometric constraints. It also considers three diagonally opposite pixels in the gradient's vertical direction, three pixels in the gradient's positive direction, and three pixels in the gradient's negative direction, resulting in a more accurate extracted image contour and greater flexibility and adaptability in use.

The invention belongs to the technical field of feeding equipment, and discloses a feeding device for a tobacco packaging machine, and the feeding device for the tobacco packaging machine comprises a feeding mechanism, a separating mechanism, a carrying mechanism, a reversing mechanism and a detecting mechanism. According to the feeding device for the tobacco packaging machine, the working procedure of manually carrying the material boxes is replaced by grabbing the material boxes through the feeding mechanism, the labor intensity of workers is remarkably reduced, meanwhile, efficiency loss caused by cooperation of multiple persons is avoided, and the feeding speed is greatly increased. And secondly, through cooperative operation of the separation mechanism, the reversing mechanism and the detection mechanism, accurate adjustment of the materials in the positive direction and the negative direction and distribution of the first feeding channel and the second feeding channel of the machining equipment are achieved, common omissions such as reverse loading and inverted loading of the materials in manual operation can be eradicated, and the stability of the follow-up automatic packaging process and the product quality are ensured. In addition, manual intervention is reduced through the automatic process, and management chaos caused by manual operation on site is avoided.

The present application relates to the technical field of downhole management, and particularly discloses a coal mine downhole anti-collision personnel management system, which is used to solve the problem of weak prevention ability of personnel management in coal mine downhole accidents; the present application sets the positioning base station installed at the entrance of the impact area as the first positioning base station, the positioning base station installed at the end of the impact area as the second positioning base station, and the positioning base station installed at the exit of the impact area as the third positioning base station by acquiring the positioning information of the personnel, sets the distance path between the first positioning base station and the second positioning base station as the first path, sets the direction of the first positioning base station towards the second positioning base station in the first path as the first positive direction, and sets the direction of the second positioning base station towards the first positioning base station in the first path as the first negative direction, compares the positioning information of adjacent time points to determine the movement direction of the personnel in the first path, realizes dynamic monitoring, and ensures instant grasp of the personnel flow direction and state.

The invention discloses a method and equipment for improving matching of a measured piece in an attenuation measurement system, belongs to the field of radio metering, and comprises the method for improving matching of the measured piece in the attenuation measurement system, and the core of the method is that a precise matching absorption load is added in a front-end transmission system of the measured piece; energy transmission is realized on a waveguide wide side of the precise matching absorption load through a coupling hole; a transmission waveguide is additionally arranged above the coupling hole, and energy is transmitted to a measured piece in the forward direction; and a precise matching absorption load is added in the reverse direction to absorb energy in the reverse direction, so that the measured piece matching improvement equipment in the attenuation measurement system is formed, and finally the measured piece matching of the attenuation measurement system is improved. According to the method and the equipment, the impedance matching of the measured piece is improved by using the precise matching load, the voltage standing-wave ratio of the load level is realized, and the attenuation measurement accuracy is improved. The tested piece matching improvement equipment developed by using the method is directly connected to two ends of the tested piece in an attenuation measurement system, so that the impedance matching of the tested piece is improved.

To provide a biological signal measurement device capable of selecting a set of electrodes suitable for electrocardiographic measurement from a plurality of sets of electrodes.SOLUTION: A biological signal measurement device comprises: a belt-like fixing member to be wound around a person to be measured; a plurality of sets of electrodes arranged on the fixing member; a selection unit that on the basis of a feature quantity based on the absolute value of the maximum amplitude in the positive direction and the absolute value of the maximum amplitude in the negative direction when an electric potential of a base line of electrocardiogram waveforms of the person to be measured acquired by plurality of sets of electrodes is used as a reference, selects a set of measurement electrodes to be used for acquiring the electrocardiogram waveforms; and a detection unit that uses the selected set of the measurement electrodes to detect a feature of the electrocardiogram waveforms.SELECTED DRAWING: Figure 4

The utility model relates to the technical field of camera shooting, and specifically provides a camera shooting module comprising a circuit board; the photosensitive part is arranged on the circuit board; the bracket is arranged on the circuit board and is provided with a light hole; the lens base is arranged on one side, deviating from the circuit board, of the bracket; the lens is arranged in the lens base; and the first bonding piece is connected between the lens base and the lens. Wherein the lens, the light hole and the photosensitive member are sequentially and correspondingly arranged along the optical axis direction of the lens, the thermal expansion coefficient of the lens seat along the optical axis direction of the lens is at least, and the thermal expansion coefficient of the lens seat along the direction perpendicular to the optical axis direction of the lens is at least. According to the camera module, the thermal expansion coefficient of the lens base is reasonably configured, so that the back focal length variation of the lens caused by temperature change can be effectively and positively compensated, the adverse effect of the variation on the overall performance of the camera module is reduced, and the imaging quality of the camera module is favorably improved. The utility model further provides electronic equipment comprising a shell and the camera module.