229results about How to "Measure security" patented technology

An assembly to be detachably mounted on a body fluid monitoring system is provided. The assembly has a lancet and a device for collecting and detecting a body fluid. The lancet has a puncture needle. In this assembly, the puncture needle is maintained in sterilized conditions until its use, and the sterilization can be conducted with no adverse effects on the detection device. A readily sterilizable lancet unit and a body fluid-collecting and detecting unit adapted for use in such an assembly as well as a body fluid-monitoring system including such an assembly are also provided. The assembly comprises a first housing having a sleeve which movably accommodates the lancet in its interior, and a second housing having the body fluid detection device. The first housing and the second housing share an opening. The lancet is sterilized before the assembly. The body fluid-collecting and detecting section has a body fluid guide on the periphery of the inlet.

Provided is a non-invasive electronic method and apparatus for measuring blood pressure, in which the data is processed with an algorithm of non-linear fitting for recovering trend envelope of an oscillating PW by a firmware, so that the trend envelope of PW amplitude can be recovered accurately, and the obtained average pressure shows higher degree of agreement with the real situation in clinic. In this apparatus, a 3-way solenoid valve (20) is arranged between a cuff (10) and a first pressure sensor (30), wherein the common port of the 3-way solenoid valve (20) is connected with the first pressure sensor (30), the normally open port thereof connected with the cuff (10), and the normally closed port thereof connected with the air atmosphere during zeroing process. Moreover, an independent timing circuit (45) is provided additionally. In the measurement method of the present invention, the zeroing is performed with the help of the 3-way solenoid valve (20). Once a state of overtime or overpressure occurs, an air bump (50) is immediately closed, and a quick-deflation solenoid valve (60) is opened so that the pressure in the cuff (10) is released to ensure safe application.

A basketball safety apparatus which comprises sections of netting adapted to be used in conjunction with a basketball goal, movable pole support bases which are adapted to be positioned in proximity to the basketball goal and a driveway that connects to a street, and a plurality of poles adapted to be mounted vertically in the pole support bases. The sections of netting are connected to the vertically mounted poles or to the basketball goal. The netting has mesh size is sufficiently small to stop a basketball, and the poles and bases are mounted and arranged so that the netting forms a barrier in one or more directions from the basketball goal and across the driveway.

An X-ray analysis apparatus including: a radiation source configured to irradiate an irradiation point on a sample with radiation; an X-ray detector configured to detect a characteristic X-ray emitted from the sample, and output a signal including energy information about the characteristic X-ray; an analyzer configured to analyze the signal; a sample stage configured to allow placement of the sample thereon; a shifting mechanism being capable of relatively shifting the sample on the sample stage and the radiation source and the X-ray detector with respect to each other; a height measuring mechanism being capable of measuring the height of the irradiation point on the sample; and a controller configured to control the shifting mechanism on the basis of the measured height of the irradiation point on the sample and adjust the distance of the sample with respect to the radiation source and the X-ray detector is used.

The invention relates to a multi-layer telescopic multi-point displacement meter anchor head for water-rich soft stratum. A plurality of in-hole measuring point anchor head units are arranged in the longitudinal direction one after another. Each in-hole measuring point anchor head unit is designed to be a surface contact type and comprises a main anchor head and an anchor head protective cover, wherein each main anchor head is connected with the corresponding anchor head protective cover by a positioning hole. Each main anchor head comprises an indium steel wire, a fixed pulley device, an external force conversion device and an anchor claw execution mechanism; each indium steel wire and each fixed pulley device receive external force; a contraction action is realized by each anchor claw execution mechanism through the conversion and the drive of each external force conversion device; each external force conversion device comprises a tension spring device and a plurality of special springs; each anchor claw execution mechanism comprises a plurality of triangular blade-type anchor claws; and the number of the special springs is the same as that of the anchor claws. The multi-layer telescopic multi-point displacement meter anchor head has the advantages of good anchoring effect, wide measuring range, simple structure, convenience in construction, high anti-sliding capacity, reliable performance and the like.

The invention discloses a casting flow tracking system of a continuous casting machine, which is used for successfully measuring actual positions of a blank and a dummy bar in a sector section and casting length of a casting blank through a plurality of encoders, a high-speed calculation template, a signal source counting overflow processing module, a signal source correct recognition and screening module and a tracking calculation module, wherein the plurality of encoders are arranged at a plurality of sector sections to drive a rear shaft of a drive motor, and the measuring process is safe,and is safer and more reliable compared with single-point detection; the signal source counting overflow processing module improves the reliability and the tracking precision of the signal source; and the signal source correct recognition and screening module recognizes a reference signal source from the plurality of encoders to overcome the defect of signal distortion of the signal source causedby using the selected fixed signal source as the reference signal. A human-computer interface unit determines the actual diameter of a drive roller according to the abrasion condition of a mechanicalroller and solves the problem of error compensation of the tracking data caused by the abrasion of the mechanical roller. A tracking classification processing module and a delivery continuous castinguser data module can realize the application of the calculation result.

The invention relates to a method for measuring capacitive current of a low-current grounding power grid. The method comprises an HC-1 capacitive current tester and a measurement device, wherein the HC-1 capacitive current tester injects a 5Hz constant-current square wave signal into a zero-sequence circuit of a power distribution network, carries out charging and discharging on a grounding capacitor of a line to measure the grounding capacitive current of the power distribution network; the measurement device comprises an AC/DC power supply system, a digital signal microprocessor, a signal collection unit and a power electronic inverter circuit; the digital signal microprocessor controls the power electronic inverter circuit to generate the 5Hz constant-current square wave signal, and injects the 5Hz constant-current square wave signal into the zero-sequence circuit of the system through a bus open delta of the system, a grounded variable neutral point or a neutral point of a capacitor bank; and a high-performance A/D sampling circuit and digital signal processing are adopted by a signal collection system.

The X-ray fluorescence analyzer (100) includes: an enclosure (10); a door (20) for putting the sample into and out of the enclosure; a height measurement mechanism (7) capable of measuring a height at the irradiation point; a moving mechanism control unit (9) for adjusting a distance between the sample and the radiation source as well as the X-ray detector based on the measured height at the irradiation point; a laser unit (7) for irradiating the irradiation point with a visible light laser beam; a laser start control unit (9) for irradiating the visible light laser beam by the laser unit (7) when the door is open state; and a height measurement mechanism start control unit (9) for starting the height measurement mechanism to measure the height at the irradiation point when the door is opened.

A method for measuring linear expansion coefficient of polymer based foam material by using displacement transducer includes fixing measurement zone of material to be measured on two pincer arms of said transducer and setting it in temperature zone of 4.2 ¿C 300 K, connecting resistance foil gauge forming Wheatstone bridge to resistance strain gauge, collecting deformation of material to be measured and clamping force on said transducer then converting displacement amount to be electric amount, sending these data to computer for obtaining curve of strain to temperature variation and furthermore to obtain expansion coefficient of material to be measured from the curve.

A method for operating a Coriolis mass flow measuring device having at least one measuring pipe through which a medium flows, at least one vibration generator, at least a first vibration sensor, at least a second vibration sensor and at least a control and analyzing unit. The detection of measurement variables or diagnosis parameters is achieved with increased accuracy and security in that the control and analyzing unit calculates, at least indirectly and in a ratiometric manner, at least a derived secondary variable based on a primary measurement, wherein interested primary measurement signals are transmitted alternately to the control and analyzing unit via different measurement channels and wherein, based on the various values obtained from the different measurement channels regarding the primary measurement signals, compensation values of the transmitted primary measurement signals are calculated and used as a basis for the calculation of the derived secondary variable.

The invention belongs to the field of biomedical signal processing, and particularly relates to a pressure protection method and a pressure protection apparatus used in the non-invasive blood pressure measurement process. Energy value of pressure generated in a cuff serves as a reference for pressure protection so that different types of patients can be protected. By the pressure protection method, measurement effectiveness of the non-invasive blood measurement device can be improved effectively, and harm to patients due to energy variation caused by pressure difference can be considered. The pressure protection method has the advantages of higher flexibility and more effective protection and higher safety in measurement.

The invention discloses an apparatus for measuring dust content of flue gas and a method thereof. The apparatus comprises a dust collecting device, a sampling device and a suction device; an outlet end of the dust collecting device is connected with an inlet end of the sampling device, and the outlet end of the sampling device is connected with the inlet end of the suction device; in the method, the flue gas passes the dust collecting device under the condition of constant speed suction, the dust in the flue gas is filtered by filter paper, and the dust content of the flue gas is calculated by weighing the weight of the filter paper before filtering the dust and the weight of the filter paper after filtering the dust and putting the weights into a formula. By the device for measuring the dust content of the flue gas, the dust content of the flue gas can be accurately analyzed. The device has the advantages of novel design, simple structure and easy implementation, and is very applicable to large scale popularization and use. The method for measuring the dust content of the flue gas has the advantages of safe and reliable sampling, simple operation, accurate and reliable analysis result and fast detection.

An inventive ultrasound diagnostic device is provided, which can display information on the temperature rise in a biological object under ultrasound radiation for measurement of a shear elasticity of a biological tissue of interest, thereby drawing attention of an examiner of the device and enabling him to retain the temperature rise within a predetermined safe range while performing the shear elasticity measurement. The device is adapted to measure the shear elasticity of a tissue by ultrasonic waves emitted from a probe. The device has a calculation unit configured to calculate a rise in temperature of the biological tissue irradiated with a focused ultrasonic (US) beam, and a display unit configured to display the temperature information obtained.

The invention discloses a multilayer blade-typed multipoint displacement metre anchor head used for a soft soil layer, wherein the anchor head comprises a plurality of measuring point anchoring head units arranged in a drilling hole of a to-be-tested soil body; each measuring point anchoring head unit is orderly and vertical to each other and connected with each other through a casing pipe from head to tail; each measuring point anchoring head unit is fixed with one longitudinal measuring point of the drilling hole. Each measuring point anchoring head unit comprises a main anchoring head and an anchoring head protective cover, wherein each main anchoring head and each corresponding anchoring head protective cover are connected in thread. The multipoint displacement metre anchoring head in the invention can drive three blade-typed anchoring grasps synchronously with three springs; utilizes elastic energy released instantly to cut into the soft soil to finish anchoring; is not limited by field condition; and is convenient in installation, simple in structure, strong in reliability and stability, good in anchoring effect, strong in anti-skid ability and reliable in performance.