41 results about "Acceleration Unit" patented technology

In a portable telephone, a sensor constructed of, for example, a 3-axial acceleration sensor is built in the vicinity of a display unit which is provided on a main body of the portable telephone. When a user moves the display unit along a vertical direction (Z-axis direction) with respect to a display screen thereof while the user holds the appliance main body, the sensor senses both a move direction and a move amount of the display unit, and thus, information displayed on the display screen of the display unit is enlarged, or compressed in display magnification defined in response to the sensed move amount. As a result, a display size of the information displayed on the display screen can be changed in such a manner that the user may have such a natural feeling achieved by moving a magnifying glass.

The invention discloses a human motion state recognition method and device. The method comprises the steps that a three-axis acceleration sensor and a human body sign sensor are arranged in a wearable device; it is determined that a human body is in the walking state according to acceleration signals collected by the three-axis acceleration sensor, the number of walking steps of the human body is calculated, and the walking stride frequency is calculated according to the number of walking steps; the corresponding sign frequency in the walking process is calculated according to sign signals collected by the human body sign sensor; the calculated walking stride frequency and the sign frequency are compared with a stride frequency threshold value and a sign frequency threshold value, and when the walking stride frequency is larger than the stride frequency threshold value and the sign frequency is larger than the sign frequency threshold value, it is determined that the human body motion state is the running state, and the calculated walking step number is recorded as running step number; or, it is determined that the human body motion state is the walking state, and the calculated walking step number is recorded as the walking step number. According to the technical scheme, the human motion state recognition method and device can effectively distinguish the walking state and the running state of the walking state.

A system, method and computer program product for optimizing handling of guest code in a Virtual Machine include code for identifying, in the guest code, a predetermined pattern that includes privileged but unsafe instructions and an instruction that raises an exception; code for executing the guest code in a native mode; code for, upon encountering the instruction that raise the exception, transferring control to a Virtual Machine Monitor; code for emulating the pattern in the Virtual Machine Monitor; and code for rolling back the effects of privileged but unsafe instructions and any intervening instructions to ensure correct Virtual Machine Monitor context. The pattern can include, for example, a privileged but unsafe instruction, followed by safe instructions, followed by an exception raising instruction, followed by safe instructions, followed by a privileged but unsafe instruction. Optionally, the most frequently occurring patterns can be placed in a cache, for use by the Virtual Machine Monitor to verify their presence in the guest code.

The invention belongs to the field of seismic resistance of civil engineering and specifically to a novel automatic anti-seismic bed which is mainly used for lifesaving when a strong shock occurs. In particular, when a strong shock occurs at night, the anti-seismic bed can be automatically started in a short time to protect safety of people on the bed. The anti-seismic bed mainly comprises an acceleration switch, a motor, a fixed bed board, a rotary bedcover and the like. Different acceleration limit values can be set according to different seismic fortification intensity of local buildings; when an earthquake occurs and a shear wave accelerated velocity exceeds a limit value, the acceleration switch is triggered and a circuit is turned on so as to allow the rotary bedcover to be opened until the bed is enclosed. The apparatus is provided with a self-locking zone, when the bedcover completely encloses the bed, self-locking is started to fix the rotary bedcover, so the whole bed forms an approximately-enclosed stable system; and protection materials like sponge are placed in the rotary bedcover to protect safety of people. The apparatus is provided with multiple protection circuits to guarantee effective starting. The limit value of the acceleration switch is adjustable, which facilitates usage of the bed in different regions. A large container is arranged in the bed, which facilitates storage of food, oxygen, emergency supplies and communication articles in the bed.

The invention discloses a rat acceleration and deceleration brain trauma striking system which comprises an experimental platform, a striking module, a striker module, a positioning module and an acceleration and deceleration trauma switching module. The positioning module is longitudinally and perpendicularly arranged on the experimental platform, the striking module is transversely and perpendicularly arranged on the positioning module, the striking module is placed on the experimental platform, the striker module is arranged at the position, arranged between the positioning module and the striking module, of the experimental platform, and the acceleration and deceleration trauma switching module is arranged on the side edge, longitudinally and perpendicularly corresponding to the striking module, of the experimental platform. Compared with the prior art, the system can precisely manufacture a rat brain trauma model, the repeatability is good, the operation is easy, a rat does not easily die, the acceleration brain trauma model and a deceleration brain trauma model can be manufactured, trauma grading can be carried out on the manufactured models, a matched group of a brain opening cavity and a brain non-opening cavity can be manufactured, and a large amount of support can be provided for research for the human brain trauma.

The invention discloses a control method and a control device of an electronic cigarette and the electronic cigarette, and belongs to the field of electronic technologies. The method is applied to theelectronic cigarette. The method comprises the following steps: judging that whether a movement event occurs on the electronic cigarette or not, wherein the movement event is an event detected through an acceleration sensor; and when the movement event occurs on the electronic cigarette, carrying out the function corresponding to the movement event, wherein the functions at least comprise the suction control function, the standby function, the preheating function, the startup and shutdown function and the work mode control method. According to the technical scheme, the movement event is enabled to occur on the electronic cigarette as long as the user adjusts the position of the electronic cigarette, then the electronic cigarette automatically performs the function corresponding to the movement event, therefore, the operation performed when the user controls the electronic cigarette to work is greatly simplified, then the user can easily and conveniently control the work of the electronic cigarette, and finally, the control efficiency for the electronic cigarette is improved.

The invention relates to a self-adaptive optical image high resolution restoration method combined with frame selection and blind deconvolution, comprising the following steps: firstly, a short exposure image sequence gn (x, y) is recorded when a self-adaptive optical closed loop is corrected; shannnon entropy of each frame of image in the sequence is calculated; a degraded image gm (x, y) with lower entropy is selected for blind deconvolution image restoration; secondly, an initial value hm (x, y) of a point spread function is generated by utilization of random phase; thirdly, a target f(x, y) is estimated by using the gm(x, y) and the obtained hm (x, y), and an estimated value f(x, y) is obtained after addition of positivity limitation on the target; fourthly, an estimated value hm (x, y) of the point spread function is obtained by using the gm (x, y) and the f(x, y), and an estimated value h(x, y) is obtained after addition of positivity limitation in the same way; fifthly, inspection is made whether an iterated value h(x, y) and an iterated value f(x, y) meet iteration stopping requirements or not; if the iterated values do not meet the iteration stopping requirements, the third step is returned; if the iterated values meet the iteration stopping requirements, circulation is stopped and the f(x, y) and the h(x, y) are outputted. The invention has the advantages of effective improvement of restoration quality, acceleration of convergence rate, capability of well compensating correction capability under hardware limitation of a self-adaptive optical system, and improvement of imaging quality.

A resuscitation device for assisting a rescuer in resuscitating a patient. A handheld computing/communication device (400) may be configured for performing a non-resuscitation function during time periods when resuscitation is not required, the handheld device may be further configured (406) to provide CPR prompts during time periods when used by a rescuer to assist in resuscitation, and a sensor (401) may be provided to measure a parameter (e.g., chest acceleration) relevant to resuscitation.. A CPR-assistance element (414) may be configured to be applied to the patient and to communicate with the handheld computing/communication device (400).

For a vehicle having a brake system, a driver assistance system includes a detection system having at least one sensor configured to output measurement signals, and a control unit configured to receive at least one measurement signal, determine whether the vehicle is in a critical state based on measurement signal(s), and output an external brake request signal to a brake control device of the brake system for priming or biasing the brake system when the vehicle is determined to be in the critical state. The external brake request signal comprises an acceleration setpoint value signal having a higher acceleration setpoint value than a current actual acceleration value of the vehicle.

The invention discloses a torsion-resistant pull rod structure of a power assembly. The torsion-resistant pull rod structure of the power assembly comprises a torsion-resistant pull rod framework, wherein the two ends of the torsion-resistant pull rod framework are respectively provided with a large bushing and a small bushing; the large bushing comprises a large bushing rubber ring and a large bushing liner; the large bushing rubber ring is provided with a forward gear rubber impact block and a reverse gear rubber impact block; the ends of the forward gear rubber impact block and the reversegear rubber impact block are tapered; the two sides of the forward gear rubber impact block are provided with forward gear impact block buffer grooves; and two sides of the reverse gear rubber impactblock are provided with reverse gear impact block buffer grooves. According to the invention, the rigidity curves of an initial section and an end section in an acceleration process of a three-gear area are smooth, and abrupt change of rigidity does not exist, so that the vibration strength is reduced, and the NVH performance of a whole vehicle is improved; and a special gasket is arranged betweenthe large bushing liner and a front auxiliary frame assembly, and a small bushing rubber ring is provided with a limiting boss and a buffer groove, so that the connection stability of the two ends ofa torsion-resistant pull rod is enhanced.

The invention provides a vehicle abnormity lane change determination method. The method comprises the following steps: comparing the angular velocity gz of a vehicle around a vertical direction with -5.8DEG/sec; determining whether the change tend of the angular velocity gz of a vehicle around a vertical direction is opposite to the change tend of the angular velocity gx of the vehicle around a headstock tailstock direction; comparing the change value deltagz of the angular velocity of the vehicle around the vertical direction with -5.1DEG/sec, and comparing the change value deltagx of the angular velocity of the vehicle around the headstock tailstock direction with -4.1DEG/sec; and determining that the lane change of the vehicle is abnormal when above conditions are satisfied. The invention also provides a vehicle abnormity lane change determination apparatus. The hexa-axial acceleration value and the angular acceleration value of the vehicle during running exceed the threshold making people in the vehicle uncomfortable or not can be determined through the method and the apparatus in order to determine whether the lane change of the vehicle is abnormal or not.

The invention discloses a disturbing force compensation method of a two-degree-of-freedom double electro-hydraulic vibrostand array simulation system. The two-degree-of-freedom double electro-hydraulic vibrostand array simulation system comprises a lower platform, a six-degree-of-freedom vibrostand, a two-degree-of-freedom vibrostand, a pier A, a pier B and a bridge board. According to the disturbing force compensation method disclosed by the invention, pressure difference signals of two chambers of hydraulic cylinders in 10 valve-controlled cylinder cylinders and acceleration signals of piston rods of the hydraulic cylinders are collected, and disturbing force compensation signals are obtained by calculation. Driving signals of the valve-controlled cylinder cylinders are adjusted by usingthe disturbing force compensation signals to achieve the purpose of improving the control precision of the array simulation system. By application of the disturbing force compensation method proposedby the invention, the fluctuation 6dB of amplitude-frequency characteristics of a closed-loop transfer function of a rolling degree-of-freedom position in the vicinity of 18 Hz can be reduced within2dB, and the fluctuation 16dB of the amplitude-frequency characteristics of the closed-loop transfer function of a pitching degree-of-freedom position in the vicinity of 35 Hz can be reduced within 4dB, and the control precision of the array simulation system is obviously improved.

The invention discloses an intelligent water cup. It includes a cup body and a cup cover, a temperature sensor and a liquid level sensor are arranged in the cup body, a microprocessor, a power supply module, a three-axis acceleration sensor and a wireless communication module are arranged on the cup body, and a There is a display screen and a voice output module, and the microprocessor is respectively electrically connected with a temperature sensor, a liquid level sensor, a power supply module, a three-axis acceleration sensor, a wireless communication module, a display screen and a voice output module. The invention can accurately record the water drinking situation of the user, and remind the user to drink water in time, thereby ensuring the daily intake of water required by the user.

The invention relates to a Hall type magnetic fluid acceleration sensor. The Hall type magnetic fluid acceleration sensor comprises a left end cover, a second permanent magnet, a shell body, a first Hall element, a first permanent magnet, a second Hall element, a third permanent magnet, a right end cover and magnetic liquid, wherein the shell body is of a cylindrical tubular structure, the first permanent magnet is arranged in the middle of interior of the shell body, and both ends of the first permanent magnet are adsorbed with the magnetic liquid in a saturated manner; the second permanent magnet is placed at a left port of the shell body, and a third permanent magnet is placed at a right port of the shell body; and both ends of the shell body are provided with the left end cover and the right end cover separately through threaded connection. The Hall type magnetic fluid acceleration sensor adopts the permanent magnets fixed on both ends of the shell body to provide restoring forces for intermediate inertia mass, the measuring range and measuring sensitivity of the sensor can be adjusted by changing parameters of the permanent magnets on both ends, different requirements on the measuring range and measuring sensitivity of the sensor on different occasions can be met, and the adaptability of the sensor is improved.

An automatic spot drill motor speed control method includes following steps: 1), acquiring acceleration planning charts (a1, a2,..., an); 2), setting acceleration period of each time of acceleration as delta tn which refers to time for which current speed needs to be maintained to run for delta tn before nth acceleration, and combining speed planning charts (v1, v2, ..., vn) of a motor acquired inthe step 1) by calculation and pulse planning charts (l1, l2, ..., ln) of pulse number needed for reaching target speed, wherein delta tn is in direct proportion to the current speed of a spot drillstepping motor, and minimum acceleration period is delta t; 3),calculating according to the target position and the current position of the spot drill motor to acquire stroke L, combining vp and L, and comparing values in the speed planning charts and the pulse planning charts of the step 2) to acquire a speed control curve meeting the speed planning charts and the pulse planning charts, wherein the target speed is vp. By the method, quick acceleration of the spot drill stepping motor can be realized, and working stability and efficiency of the spot drill motor can be improved.

A method for determining the driving state of a vehicle comprises the following steps:

• • detecting (21) first measurement signals of a first inertial measurement sensor system (1, 100), wherein the first inertial measurement sensor system is arranged in a first region of the vehicle so that it does not execute a relative movement in relation to the first region of the vehicle, and wherein the first measurement signals correspond to at least one acceleration component in three-dimensional space and/or at least one rotation rate component of the first inertial measurement sensor system (1, 100) in the first region of the vehicle in three-dimensional space;
  • detecting (21) second measurement signals of a second inertial measurement sensor system (2, 100), wherein the second inertial measurement sensor system is arranged in a second region of the vehicle, which is movable in relation to the first region of the vehicle, wherein it is arranged so that it does not execute a relative movement in relation to the second region of the vehicle, and wherein the second measurement signals correspond to at least one acceleration component in three-dimensional space and/or at least one rotation rate component of the second inertial measurement system (2, 100) in the second region of the vehicle in three-dimensional space;
  • analyzing (22, 23, 24, 25) the first and second measurement signals based on the functional relationship between the movement of the first inertial measurement system and the movement of the second inertial measurement sensor system; and
  • based on the result of the analysis of the first and second measurement signals, determining (26) the relative orientation of the two inertial measurement sensor systems to one another.

The invention belongs to the field of positioning navigation time (PNT), and particularly relates to an integrated micro PNT unit comprising a central micro clock module and an outer micro inertia module, wherein an anchor point of the central micro clock module is located at the center, a plurality of circles are distributed outside the anchor point, radial short beams are uniformly distributed between the circles, and outer electrodes are distributed at the outermost periphery. During operation, stable control is realized by electrostatic force action and closed-loop feedback, and stable frequency information is provided externally; the annular anchor point of the micro inertia module is located at the center, the circles are located on the outer side, the composite beams are evenly distributed between the circles and the annular anchor point, the inner and outer sides of the circles are evenly distributed with plane outer electrodes and plane inner electrodes, and the upper and lower surfaces of the circles are distributed with off-plane electrodes, thereby realizing the sensitivity of X, Y, Z three-axis acceleration input and X, Y, Z three-axis angular motion input. The integrated micro PNT unit can be realized by the MEMS planar process as a whole without involving multi-layer stacking and precision assembly on a microscopic level, and the process is relatively simple.

The invention relates to a method, a device and a system for measuring a mechanical beam rigidity of a capacitive MEMS (Micro-Electro-Mechanical System) accelerometer. The method comprises: applying apreload voltage to the accelerometer, wherein the preload voltage comprises a first preload voltage and a second preload voltage; acquiring a first voltage change amount output by the accelerometer at the first preload voltage when the acceleration experienced by the accelerometer changes, and acquiring a second voltage change amount output by the accelerometer at the second preload voltage whenthe acceleration experienced by the accelerometer changes; and obtaining the mechanical beam rigidity of the accelerometer according to a first electrostatic negative rigidity of the first preload voltage, a second electrostatic negative rigidity of the second preload voltage, the first voltage change amount and the second voltage change amount. According to the method, the device and the system for measuring the mechanical beam rigidity of the capacitive MEMS accelerometer, the influence of the parameters, of the traditional measuring technology, such as displacement capacitance conversion coefficient, inertial mass block quality, etc., on the measurement precision when measuring the mechanical beam rigidity can be avoided, so that the measurement precision of the mechanical beam rigidityof the accelerometer is improved.

The invention discloses an intelligent module for obtaining reciprocating traction training parameters. The intelligent module comprises an acceleration sensor and a gyroscope. In use, the intelligentmodule for obtaining the reciprocating traction training parameters is installed on a carrier doing reciprocating traction movement, and the training parameter obtaining method of the intelligent module for obtaining reciprocating traction training parameters comprises the step that according to an acceleration signal fed back by the acceleration sensor and an angular speed signal fed back by thegyroscope, at least one of the movement stroke S, the displacement Sxz, the maximum stroke Smax, the maximum displacement Sxmax, the minimum displacement Sxmin, the number of reciprocating movement times, the movement acceleration a's and the movement speed Vx of the carrier in the traction direction is obtained. The structure is simple, convenience is brought to implementation, in the process that a patient uses a pulley hanging ring trainer and other similar traction movement rehabilitation devices to conduct upper limb rehabilitation training, the maximum training stroke, the number of reciprocating training times, the movement training speed, the traction force and the like of the patient can be monitored in real time, and a scientific reference is provided for rehabilitation physician to make a training plan.

The present invention discloses an earphone vibrator detection device, system and method. The device of the present invention is suitable for detecting a headset vibrator, and being placed at the headband position of the headset during detection. The device comprises an acceleration sensor and a signal conversion module mutually connected; the acceleration sensor is configured to detect the acceleration information of the headband position when the headset outputs a specified audio, and convert the acceleration information into a voltage signal to be output to the signal conversion module; and the signal conversion module is configured to convert the received voltage signal into a digital signal to be output, so as to determine whether the vibration amplitude of the headset vibrator is qualified according to the output digital signal. The technical solution of the present invention solves the problem that the detection of a headset vibrator is currently conducted manually in a cumbersome and laborious manner.