20 results about "Time difference" patented technology

The invention provides a system and method for measuring vital signs (e.g. SYS, DIA, SpO2, heart rate, and respiratory rate) and motion (e.g. activity level, posture, degree of motion, and arm height) from a patient. The system features: (i) first and second sensors configured to independently generate time-dependent waveforms indicative of one or more contractile properties of the patient's heart; and (ii) at least three motion-detecting sensors positioned on the forearm, upper arm, and a body location other than the forearm or upper arm of the patient. Each motion-detecting sensor generates at least one time-dependent motion waveform indicative of motion of the location on the patient's body to which it is affixed. A processing component, typically worn on the patient's body and featuring a microprocessor, receives the time-dependent waveforms generated by the different sensors and processes them to determine: (i) a pulse transit time calculated using a time difference between features in two separate time-dependent waveforms, (ii) a blood pressure value calculated from the time difference, and (iii) a motion parameter calculated from at least one motion waveform.

The invention provides a method, a system and a computer for realizing sound-and-caption synchronization in a video file. The method comprise the following steps of: acquiring a first sound and a first caption of the currently played video file, wherein the first sound is not matched with the first caption, the first sound corresponds to a first time stamp in the video file, and the first captioncorresponds to a second time stamp in the video file; calculating the similarity of the first sound and the first caption to obtain a result; when the result shows that the similarity is greater thana threshold value, comparing the first time stamp with the second time stamp to obtain a time difference value; and adjusting the first time stamp and the second time stamp according to the time difference value to enable the first sound and the first caption in the video file to be synchronously output. Due to the adoption of the method, the system and the computer for realizing the sound-and-caption synchronization in the video file, automatic synchronization of the sound and the caption can be realized when the played sound and the current caption are asynchronous, so user experience is greatly improved.

The invention belongs to the technical field of measurement and calibration, and discloses a laser ranging calibration device. The laser ranging calibration device comprises an experiment table, a laser emitter, a laser receiver, a data processor and a reflector controller are arranged on the experiment table, and the data processor is used for calculating the time difference between the moment when the laser emitter emits a laser signal and the moment when the laser receiver receives the reflected laser signal, calculating measurement distances and calibration values and then saving the corresponding calibration values. The invention further discloses a calibration method using the laser ranging calibration device. By means of the laser ranging calibration device, according to different reflectivities and different incidence angles, corresponding calibration values can be calculated and then saved, multiple groups of calibration data can be obtained, and in actual measurement, all thesaved data can be used for calibration.

A GPS synchronous timing-based XLPE cable partial discharge positioning device is provided. The GPS synchronous timing-based XLPE cable partial discharge positioning device includes a first high-frequency sensor, a second high-frequency sensor, an XLPE cable partial discharge detection positioning host, an XLPE cable partial discharge detection positioning slave and an upper computer. According to the GPS synchronous timing-based XLPE cable partial discharge positioning device of the invention, a single positioning device is divided into two sets of apparatuses which respectively detect high-frequency current signals of cable connector grounding lines at two ends of one XLPE cable, wherein one apparatus is adopted as the detection host, and the other apparatus is adopted as the detection slave; and the host and slave can realize synchronous acquisition through GPS timing synchronization, and therefore, precise time difference of the same pulse can be obtained, and a partial discharge power source can be precisely positioned.

The invention discloses a bladder volume measuring method and instrument. The bladder volume measuring method comprises the steps that S1, ultrasonic signals are transmitted in a plurality of directions of the bladder; S2, two reflection signals, reflected by bladder walls on two sides of the corresponding direction, of the ultrasonic signals in each direction are received; S3, the depth of the bladder in the direction is determined according to the time difference of the two reflection signals in each direction; S4, the bladder volume is determined according to the bladder depths in multipledirections. The propagation time of ultrasonic waves in the bladder is measured, and ultrasonic imaging is not needed, so that a measuring device is simplified, and the operation efficiency of the device is improved. In clinical application, results are quicker to obtain, and the efficiency of measuring the bladder volume is improved.

The invention discloses a crankshaft runout detecting device, which comprises a mounting base used for mounting the crankshaft runout detecting device on a side of a crankshaft, a first measuring gauge arranged on the mounting base, and a transmission mechanism which is used for transmitting runout of a detected position to the side head of the first measuring gauge on the periphery of the crankshaft when the crankshaft rotates, the crankshaft runout detecting device can detect the runout of a crankshaft journal with a small surrounding space, and is conductive to controlling the quality of the crankshaft finished products. The invention further discloses a crankshaft journal coaxiality detecting assembly. The crankshaft runout detecting device is adopted for detecting circular runout of the intermediate journal, an end journal runout detecting device is adopted for detecting circular runout of the end journal, and the coaxiality of the two detected journals can be obtained through calculating a real-time difference between the two circular runouts.

A temperature control operation for a fixing device is performed based on a vertical synchronous signal Vsync periodically outputted in association with a cycling motion of an intermediate transfer belt. Furthermore, the temperature control operation provides a constant time difference Δt1 between a leading edge of the vertical synchronous signal Vsync and a start of energization of a heater. Therefore, a period of the vertical synchronous signal Vsync coincides with a period of the temperature control operation corresponding to each vertical synchronous signal Vsync. In addition, a constant time period is provided between the start of energization and an actual arrival of a recording medium at a nip and hence, the temperature of a heating roller can be maintained at an optimum level during the passage of the recording medium through the nip.

The embodiment of the invention provides a computation task adjusting method and device. The method comprises the following steps: determining a target node corresponding to a target computation task; acquiring target parameter information corresponding to the target node; computing total target time consumption of the target node performing computation on the target computation task according to the target parameter information; and adjusting the target computation task according to the total target time consumption and the total time consumption corresponding to other computation tasks excepting the target computation task and based on the time consumption balance principle. According to the method, the influence factor in computation task computation processing of each node is considered, and each computation task is adjusted, so that the difference of time for each node computing the corresponding computation task is reduced, and as a result, the efficiency of MapReduce computing the whole file can be increased.

The invention provides an elevator protecting system with distributed air bags. The elevator protecting system comprises a car, a hoistway, floor safety modules, a server and a mobile phone APP. Eachfloor safety module comprises a ranging module, an air bag module, a floor communication module and a floor controller, wherein the ranging module is mounted horizontally and diagonally upwards to form an acute angle with the inner wall of the hoistway; the air bag module is below the ranging module by a distance of at least half height of the car; the floor controller is used for detecting statesof the air bag module, alarming under abnormal conditions, regularly reading measurement values of the ranging module, calculating time difference between car tail approaching and car head leaving toobtain car descending speed and alarming and controlling the air bag module to eject an air bag to slow down the car in descending under a stall condition. The elevator protecting system is high in reliability, each floor safety module is capable of independently judging the stall condition of the car and ejecting the air bags to protect passengers, and convenience in mobile phone APP remote monitoring is achieved.

The invention discloses a method for measuring pasteurization time. The method comprises the following steps: (1) forming at least one detection hole in each of the front end and the back end of a pasteurization insulation tube, that is, forming a front-end detection hole and a back-end detection hole, and mounting at least one potential monitoring probe inside each of the front-end detection hole and the back-end detection hole respectively; (2) arranging a needle opening at a 1-50cm position of the upstream of the front-end detection hole for injecting salt water; (3) starting pasteurization equipment, substituting milk with water, and enabling water to flow in the equipment in the flowing form of milk in a normal pasteurization process; (4) injecting the salt water from the needle opening, monitoring potential changes of the potential monitoring probes at the front-end detection hole and the back-end detection hole, and recording the appearance time difference between potential peaks of the two. By the method for measuring the pasteurization retention time of the high-quality milk, the retention time in the pasteurization process is measured by a potentiometric method, so that the control precision of the retention time in the pasteurization process is improved, and a stable and reliable equipment guarantee is provide for preparation of the high-quality milk.

The invention relates to a system for measuring millisecond return response time of a CAN bus product, and belongs to the field of industrial control design. The system comprises a to-be-tested product, a calculation conversion module, a test module, a first timing module, a second timing module, a return analysis module and a response time calculation module. The method is specially used for solving the problem of CAN bus products, and is applied to measure the situation that various tested devices give a return response in millisecond time. The reaction time of the tested equipment is obtained by judging the time difference between the first moment and the second moment, and the unit is 0.1 millisecond; the method provided by the invention is relatively accurate, and meets the requirement of applying the CAN bus product to test and measure the return response time of the tested equipment of which the millisecond level is less than or equal to millisecond level.

The invention belongs to the field of energy metering, and relates to a self-healing precision correction method for a supersonic heat energy metering device. The method comprises the following main technological steps: firstly carrying out the hardware configuration of the supersonic heat energy metering device; secondly selecting a conventional TG840 main control chip and a TDC-GP22 time chip; thirdly setting a conventional zero-returning algorithmic program of static zero time difference of the supersonic heat energy metering device in the chips; fourthly setting a conventional program which obtains time difference through a peak value and a minimum value in the main control and time chips; and finally carrying out the non-linear correction of the supersonic heat energy metering device through a function of self-healing correction of the metering device. The method effectively eliminate the impact on metering precision from the factors (physical asymmetry, time drift, pipe bubbles and on-site noise) of an electronic circuit, enables the metering device to be simple in the overall structure, and enables the time measurement precision to be high.

The invention relates to a timing circuit and a timing method for measuring the time difference between two paths of pulse signals, belongs to the technical field of timing circuits, and solves the problems of complex hardware circuit structure and the like of the existing timing circuit. The timing circuit comprises a first JK trigger, a second JK trigger, an AND gate U1, an AND gate 2, an OR gate U3 and a timing assembly. The CLK end of the first JK trigger receives one path of pulse signals, the J end, the K end and the Q non-end are connected with the second input end of the AND gate U2, and the Q end is connected with the second input end of the AND gate U1; the CLK end of the second JK trigger receives the other path of pulse signals, the J end, the K end and the Q non-end are connected with the first input end of the AND gate U1, and the Q end is connected with the first input end of the AND gate U2; the output end of the AND gate U1 is connected with the first input end of the OR gate U3, the output end of the AND gate U2 is connected with the second input end of the OR gate U3, the output end of the OR gate U3 is connected with the timing assembly, and the timing assembly obtains and outputs a timing result based on the counting control pulse output by the OR gate U3.

The invention provides a while-drilling azimuth detection data synchronization method and equipment, and the method comprises the steps that a control module starts a timer to record first time according to a measurement starting command sent by a tool face angle measurement module, and sends a detection signal collection starting command to a detection signal collection module; the detection signal acquisition module performs parameter configuration according to the detection signal acquisition starting command, and sends a work starting command to the control module based on a configuration completion state; the control module closes the timer and records second time according to the work starting command; and calculating a deviation angle according to the time difference between the first time and the second time, and correcting the tool face angle measurement module based on the deviation angle.

The invention provides a method for registering, analyzing and managing large number of personal/enterprise/team domain names through an internal server. Keywords of programming languages are analyzedone by one through codes, the codes are combined and mixed and then compiled into an operable program language in a unified mode, analysis is fast and stable, the domain name state can be tracked atany time, and the expression form of the website health degree is diagnosed. Finally, a mark type (HTML) code segment which can be identified by the IE browser is generated. Website developers or users compile favorite website styles through familiar websites or other development programming languages and finally compile and generate IE browsers through a hybrid compiler, and HTML code segments can be recognized and displayed to final website visitors. Through the domain name management technology, a large number of domain names can be quickly and stably analyzed, the domain name state can betracked at any time, the health degree of the website can be diagnosed, the problems that the website application state is difficult to monitor and a large number of domain names are troublesome to manage are solved for users, and the time difference between domain name registration and use can be increased.