86 results about "Normal pulses" patented technology

A disk drive has a sampled servo system controller and a disk. The disk has a plurality a plurality servo burst fields, the plurality of servo burst field including first and second normal burst fields, and first and second quadrature burst fields. A portion of the first quadrature burst field is circumferentially contiguous with the first normal burst field and spans a portion of a radial extent of the first normal burst field. The second normal burst field is radially aligned with and away from the first normal burst field and spans a portion of a radial extent of the first quadrature burst field. The second quadrature burst field is radially aligned with and away from the first quadrature burst field and spans a portion of a radial extent of the second normal burst field. The first normal burst field and the first quadrature burst field have a same first phase and the second normal burst field and the first quadrature burst field have a same second phase. The first phase is different than the second phase.

A data communication system for facilitating communication between infrared devices having an initiating optical interface port that includes an IR emitter and an optical sensor. A receiving optical interface port includes an active IR emitter that emits a pulse at a predetermined interval and an optical sensor. A software application causes an Attention Signal to be emitted from the initiating IR emitter where the initiating IR emitter is positioned in detection range of the receiving optical sensor. The receiving optical interface port is controlled by a firmware application. The firmware is designed to discontinue the pulse of the active IR emitter upon detection of the Attention Signal. Once the normal pulse cycle is discontinued, the active IR emitter is then employed for transmitting data signals to the initiating optical interface port, thereby establishing an optical link between the initiating optical interface port and the receiving optical interface port. The normal operations of the IR emitter of the receiving optical interface port remain discontinued until communication between the ports is terminated, allowing data signals to be sent to the initiating optical sensor from the active IR emitter.

The invention provides a high-voltage side gate drive circuit capable of resisting noise interference. The high-voltage side gate drive circuit comprises a high-voltage level shift circuit, a differential-mode noise elimination circuit, an RS trigger and an output drive level circuit, wherein a low-side pulse signal is converted into a high-voltage pulse signal for output through the high-voltage level shift circuit; a common mode noise elimination circuit is connected between the output of the high-voltage level shift circuit and the input of the differential-mode noise elimination circuit; the common mode noise elimination circuit is used for eliminating a common mode noise signal generated in application; and the differential-mode noise elimination circuit eliminates the differential-mode noise introduced by process variations, outputs a normal pulse signal, reduces the normal pulse signal into a normal square signal through the RS trigger, outputs the square signal from the output drive level circuit and drives an external high-side power tube.

The invention belongs to the signal anti-interference technical filed and discloses a pulse anti-interference method and device. The pulse anti-interference method of the invention includes the step that n times of sampling detection is performed on pulse signal electrical levels with a set period, if n-times sampling values are continuous normal pulse signal electrical levels, it can be judged that normal pulses are detected, if other electric levels appear in the n-times sampling values, it can be judged that interference pulses exist, wherein the n is a positive integer and is large enough to ensure the reliability of the detection. The invention also discloses a pulse anti-interference device. According to the pulse anti-interference method and device of the invention, the pulse electrical levels are sampled, so that interference can be eliminated, and the anti-interference ability of equipment can be greatly improved, and as a result, the equipment can withstand 12kV electrostatic pulse interference. The pulse anti-interference method of the invention is flexible to operate, and sampling parameters (sampling frequency) can be adjusted according to an actual environment in which the equipment operates. With the pulse anti-interference method and device adopted, interference can be eliminated, and the use of hardware can be decreased, and the space of a circuit board can be saved, and product cost can be reduced.

A basic idea of the invention is to introduce a transmission delay line between the switch and the power output side of a power switching system so that any sparking of the load is hidden from the switch by the time delay of the transmission line. This makes it possible to detect the load spark and actively protect the switch, typically by turning the switch off, before it actually knows that there has been a load fault spark. Alternatively, the delay of the transmission line is long enough so that the switch has already been turned off in normal pulse operation before the load fault current reaches the switch. Either way, the switch will be turned off under normal current flow and will not be subject to destructive over-current or over-voltage conditions.

The invention discloses a synchronous pulse control circuit for preventing faults of a microprogrammed control unit (MCU) or a driving integrated circuit (IC). The circuit comprises a signal sampling circuit, a synchronous pulse conversion circuit and a rectifying control signal output circuit. The synchronous pulse control circuit is characterized in that the sampling circuit conducts sampling and amplitude adjustment on output voltage signals of the MCU or the driving IC and outputs sampling voltage signals to the synchronous pulse conversion circuit. The synchronous pulse conversion circuit couples normal pulse sampling voltage signals controlled by duty ratio at the input end of the rectifying control signal output circuit and simultaneously stops direct current fault voltage signals. The rectifying control signals output circuit clamps the control end of a complementary push-pull type power amplification circuit of a main driving circuit at the zero potential when faults occur. The synchronous pulse control circuit technically has the advantages of being good in following performance, high in reliability and low in cost.

A ground equipment signal transmit-receive method and an underground equipment signal transmit-receive method are provided; the ground equipment signal transmit-receive method comprises the following steps: a transmit-receive instruction determine step determining whether a ground signal sending instruction exists or not, if yes, executing a ground signal sending step, otherwise executing an underground signal receive step; the ground signal sending step used for coding and modulating a to-be-sent ground signal, amplifying the signal power, converting the amplified electric signal into an electromagnetic signal, and sending the electromagnetic signal to the outer side; an underground signal receive step used for converting the electromagnetic signal received from the outer side into an electric signal, modulating and amplifying the converted electric signal, and demodulating and decoding the electric signal with gain amplification, thus obtaining needed data. Compared with a normal pulse transmission mode, the two way transmission method does not need to start and stop a pump, thus saving drilling time, and preventing maloperations.

The invention relates to a normal pulse stripping method for detecting the content of vitamin in blood samples, belonging to the technical field of vitamin analysis and detection. The method is characterized by comprising the following steps: taking blood samples to be detected, mixing the blood samples to be detected with a vitamin sample treatment solution, and detecting current signals generated when the blood samples are subjected to oxidation reduction reaction on a sensor probe of a vitamin detector by using the normal pulse stripping method; and making a standard curve through comparing the current signal values of standard samples with different vitamin concentrations, then obtaining the content of the vitamin in the blood samples to be detected according to the current signal values generated by the samples to be detected. The method provided by the invention has the advantages of high sensitivity, good accuracy, simplicity and convenience in operation, quickness, wide application range, suitability for being used in medical and health departments so as to carry out analysis and detection on vitamins A, B1, B2, B6, B9, B12, C, D, E, K1 and K3 in blood samples, and the like; and the method can be used for rapidly detecting the content of the vitamin in the blood samples.

Provided is a configuration for executing display information output control with improved visibility of a user wearable or portable display unit. A controller configured to execute display information output control on a user wearable or portable display unit is included. The controller sets a turning on (ON) period and a turning off (OFF) period and controls switching between afterimage consideration pulse display having the turning off period being set to be within an afterimage recognition period and normal pulse display having the turning off period being set to be longer than or equal to the afterimage recognition period, the turning on (ON) period being an output period of display information to the display unit, the turning off (OFF) period being a non-output period of display information to the display unit. The controller executes the switching control between the afterimage consideration pulse display and the normal pulse display depending on eye velocity of a user. The controller executes the afterimage consideration pulse display in a case where eye velocity of the user is less than a threshold and executes the normal pulse display in a case where the eye velocity is more than or equal to the threshold.

The object of the present invention is to make it possible to drive a motor at a high speed without causing any shift in the position of a hand. A memory stores a count value representing a target position to which a hand is to move; a rotation detecting circuit detects that a motor has rotated to output a rotation detection pulse signal and detects that the motor has not rotated to output a non-rotation detection pulse signal; a hand position counter counts the rotation detection pulse signal; and a control circuit controls the rotation of the motor with a normal pulse until the count value stored in the memory and the value counted by the hand position counter agree with each other. When a non-rotation counter counts a predetermined number of consecutive non-rotation detection pulse signals, the control circuit drives the motor with a corrective driving pulse having a great pulse width.

For a more stable start-up procedure, a switch mode power converter has at least one inductive component including an output inductor L1 and a synchronous rectification element, said power converter comprising a control device and being characterized in that the control device is arranged, at startup of the power converter, to determine a duty-cycle of the control signal, including a normal pulse width of the control pulse, and provide an initial control signal to the at least one switch element that is designed to balance the current in the at least one inductive component of the converter. The initial control signal preferably has a duration of 50% of the normal pulse width.

The invention relates to a pathology information extraction method based on dynamic pulse wave feature parameters and belongs to the technical field of fusion of information science and medical science. The pathology information extraction method comprises the following steps: first searching for starting points and finishing points of pulse waves; solving confidence intervals of the starting points and the finishing points of the pulse waves; judging whether the pulse waves are normal according to the confidence intervals of the starting points and the finishing points so as to select a normal pulse wave; working out the number of gaussian functions for fitting the pulse waves in the I normal period section; solving parameters ak and ck of gaussian functions for fitting the pulse waves in the i normal period section; then solving a parameter bk and a gaussian function expression of the pulse waves in the i normal period section; solving six feature points of the pulse waves in the i normal period section; sequentially solving six feature points of the pulse waves in each normal period section, and solving an average value of the feature points of the pulse waves in all the normal period sections, wherein the average value serves as case information to be analyzed. By means of the pathology information extraction method based on dynamic pulse wave feature parameters, fitting precision is higher, and the feature points of the pulse waves are extracted more accurately.

The invention discloses a self-adaptive variable threshold-value filtering method of a photoelectric reflecting type pulse and heart rate sensor, and relates to a medical electronic measuring method. The self-adaptive variable threshold-value filtering method is characterized in that since the amplitude of a dicrotic wave is directly proportional to the amplitude of a pulse wave causing the dicrotic wave, a threshold value is set after a voltage peak caused by a normal pulse wave is measured at a certain time, and the threshold-value voltage is one third of the voltage peak value caused by the normal pulse wave; sampling values which are smaller than the threshold value are all considered as interference values caused by the pulse wave, a sampling value is not considered as a voltage rising process of the normal pulse wave until the sampling value is greater than the threshold value, and a moment can be remembered when the voltage peak of the pulse wave appears again; the time difference between twice pulses can be measured through the time difference between the two voltage peaks, and further a heart rate value can be calculated; a voltage fluctuation signal, which is caused by vascular pulsation, of a human tissue can be monitored in real time, the interference caused by the dicrotic wave can be effectively removed, and the non-contact type heart rate measuring stability can be increased to a large extent.

The invention discloses an intelligent wearable walking aid, comprising a wearable protecting structure and a first regulating and controlling section which is arranged on the wearable protecting structure, wherein a pair of left leg electrodes and a pair of right leg electrodes are arranged inside the wearable protecting structure; the first regulating and controlling section comprises a pulse generator, a first memory, a stride sensor, a first angle sensor, a first controller and a first bluetooth adapter; the first memory is used for storing an included angle threshold; the first angle sensor is used for inducing an included angle between a shank of a sufferer and a coronal axis and/or a vertical axis; the first controller is connected with the pulse generator, the first memory, the stride sensor and the first angle sensor; the wearable walking aid also comprises a wrist adjusting and controlling structure and a second regulating and controlling section which is arranged on the wrist adjusting and controlling structure; the second regulating and controlling section comprises a pulse sensor, a second memory, a second bluetooth adapter, and a second controller; the second memory is used for storing a normal pulse range of the sufferer; the second controller is connected with the pulse sensor and the second memory. The intelligent wearable walking aid is small in volume, and convenient to carry and use by the sufferer.

The invention discloses a method for monitoring recovery of coronary heart disease patient through human physiological features. The method for monitoring the recovery of the coronary heart disease patient through the human physiological features includes that a mobile device starts an application program, and sends an instruction to a hand ring; the hand ring judges whether a detection key on the hand ring is opened; a speed sensor on the hand ring detects whether speed of rehabilitation exercise of the exerciser is larger than preset speed; a heater on a hand ring belt automatically heats the hand ring belt so as to expand the hand ring belt; the hand ring judges whether collectors touch wrist skin of the exerciser; the hand ring starts a plurality of the collectors so as to collect pulses of cardiovascular circulation; the mobile device obtains the pulses of the cardiovascular circulation, collected by the hand ring, so as to obtain standard pulse value; the mobile device judges whether the standard pulse value meets normal pulse value; the mobile device sends a control instruction to the hand ring; after the hand ring receives the control instruction, the hand ring generates vibration to give an alarm. The method for monitoring the recovery of the coronary heart disease patient through the human physiological features can detect the exercise amount of the exerciser in real time, prevents exercise speed of the exerciser from exceeding standard value by far, and guarantees that heart rate of the exerciser is in the optimal exercise status.

A pulse-width modulated backlight control for a video display restarts the pulse-width modulated pulse train on occurrence of a video refresh pulse. In order to prevent an undesirable momentary increase in brightness in the event that the last pulse of the pre-refresh pulse train occurs too close to the first pulse of the post-refresh pulse train relative to the normal pulse interval, the width of the first pulse following refresh may be reduced from a first value determined by the desired brightness to a second value that bears the same proportion to the first value that the interval between the beginning of the previous pulse and the occurrence of the refresh pulse bore to the normal pulse interval. In that way, the duty cycle during the shortened pulse interval is the same as during a normal pulse interval, avoiding or minimizing perceptible increase in backlight brightness.

The invention provides a centrifugal separator for processing slime and belongs to the technical field of mineral separation equipment. The centrifugal separator comprises a drive rotary system, a water supply system, a material supply system, a sorting system and an unloading system, wherein the drive rotary system is located in the center of the centrifugal separator and used for generating rotational motion to form a centrifugal force field; the water supply system aims to be used for providing backwash water; the material supply system is located on the upper portion of the centrifugal separator and used for supplying materials to the centrifugal separator; and the sorting system is arranged on a rotary platform, the main core component of the sorting system is an enrichment pipe used for sorting processed materials, and the processed materials are divided through a divider to form heavy concentrate and tailings. The centrifugal separator is simple in structure, the problem that as the centrifugal acceleration of an existing centrifugal separator is increased, the normal pulse speed of rotary flow is also increased can be well solved, and sorting of fine-grain slime is effectively achieved.

The invention relates to a high-reliability edge pulse generating circuit of an intelligent power module. The high-reliability edge pulse generating circuit is designed based on a brand-new circuit design framework, and could be applied to high-side control signals with any pulse width. The high-reliability edge pulse generating circuit could ensure the normal output of a RESET pulse signal no matter the input signal has normal pulse width, or is a narrow pulse, even a super-narrow pulse so as to fundamentally solve the problem that a high-side output signal could not reset because of a narrow pulse input signal and reduce risk of straightway reliability of the MOSFET at the high side and the low side to effectively ensure the work stability of each module in the applied intelligent power module. And not only that, the high-reliability edge pulse generating circuit designed by the invention is simple in structure and overcomes the limitation of a traditional edge pulse generating circuit to input pulse width so as to save multi-level noise filter circuit in a signal transmission path, reduce the transmission delay of the signal and promote frequency of an operating switch.

The invention discloses a partial excitation loss fault identification method for pulse loss. According to the partial excitation loss fault identification method, a partial excitation loss fault of pulse loss is identified by analyzing and comparing differences among six pulse waves in one cycle of an excitation voltage, and during comparison, 10% of maximum data is removed from data of each pulse wave, so that the influence of excitation voltage peaks on calculation during rectification and commutation can be reduced; and 50% of minimum data is removed, therefore, sampling data of a normal pulse wave without lost pulse is basically a relatively large positive value, an average value cannot be reduced or even close to 0 due to the excitation voltage negative value part, the average valueof the pulse waves of the lost pulse is generally close to 0 or smaller than 0, a large difference exists between the average value and the pulse waves without the lost pulse, and the difference is used for identifying the excitation loss fault of the partial excitation loss fault.

The invention relates to a vehicle engine key period signal fault detection and recovery method under electromagnetic pulse interference, and belongs to a disturbed signal detection and recovery method. The method includes judging whether sensor signal high level is normal or not; judging whether the high level is shortened or delayed, and supplementing the normal pulse according to the strong interference delay condition of the high level; judging whether the sensor signal low level is normal or not; judging whether the low level is shortened or delayed, judging whether the low level is electromagnetic pulse strong interference or not, and supplementing normal pulses according to the strong interference delay condition of the low level; and stopping detection. The method has the advantages that a corresponding processing method can be carried out for any interference condition, and the method is accurate; the waveform interfered by the electromagnetic pulse can be detected to supplement the normal pulse segment only by connecting the output end of the signal waveform to be recovered into the single chip microcomputer, and finally the normal waveform is output, so that the operation is simple, convenient, time-saving and labor-saving. The method can be applied to the fields of electronic communication, signal detection and the like.

The invention discloses a method for determining full titanium content according to acid-soluble titanium content in a tire cord steel control sample. The method comprises the following steps: step one, taking a test article from a sample, and determining the acid-soluble titanium content Ci by using ICP-MS; step two, using a spark spectrometer for the excitation of a sample analysis surface, and using a single-spark technology for collecting spectral pulses in a titanium element channel; step three, using 3 sigma criterion for removing abnormal pulses of acid-insoluble titanium, and calculating the average Ii of normal pulses of the acid-soluble titanium; step four, drawing a calibration curve, and performing multiple regression on Ci and Ii to obtain a regression equation that Ci equals to the sum of A0 and A1*Ii, wherein A0 and A1 are multivariate regression coefficients respectively; step five, calculating the average I(t)i of all single-spark pulses, and calculating the full titanium content according to the following equation: C(t)i equals to the sum of A0 and A1*I(t)i. According to the method provided by the invention, the method can accurately determine the full titanium content in the control sample, reduce the cost of enterprises, and be widely applied to the field of sample analysis.