129 results about "Dual probe" patented technology

A percutaneous surgical instrument for de-bulking calculi or drilling bone includes an actuator for generating vibrations at ultrasonic frequencies and a horn coupled to said actuator for amplifying the actuator vibration. A fixed probe is attached to said horn for engaging the calculi and introducing the ultrasonic frequencies thereto. A floating probe is disposed concentric to and under said fixed probe and slidable thereover. A free mass is disposed between the horn and the floating probe for oscillating therebetween, in response to actuator vibration, for causing low frequency impact with the calculi.

Disclosed is a semiconductor die having an upper layer and a lower layer. The die includes a lower test structure formed in the lower metal layer of the semiconductor die. The lower conductive test structure has a first end and a second end, wherein the first end is coupled to a predetermined voltage level. The die also has an insulating layer formed over the lower metal layer and an upper test structure formed in the upper metal layer of the semiconductor die. The upper conductive test structure is coupled with the second end of the lower conductive test structure, and the upper metal layer being formed over the insulating layer. The die further includes at least one probe pad coupled with the upper test structure. Preferably, the first end of the lower test structure is coupled to a nominal ground potential. In another implementation, the upper test structure is a voltage contrast element. In another embodiment, a semiconductor die having a scanning area is disclosed. The semiconductor die includes a first plurality of test structures wherein each of the test structures in the first plurality of test structures is located entirely within the scanning area. The die includes a second plurality of test structures wherein each of the test structures in the first plurality of test structures is located only partially within the scanning area. The first plurality of test structures or the second plurality of test structures has a probe pad coupled to at least one test structure.

A programmable temperature controller with dual temperature probes for food cooking, comprising: (a) an AC power supply for providing power supply to the programmable temperature controller, a smoker cooker, and a smoke generator, (b) a plurality of temperature probe inputs, (c) a smoker cooker power supply, (d) a smoker cooker cooling fan power supply, (e) a smoke generator control, (f) a plurality of user input keys, and (g) a plurality of information displays, wherein the cooking is divided into several phases and these phases can be terminated by either a predetermined cooking time or a predetermined food internal temperature, and the user uses the plurality of user input keys to program the programmable temperature controller, the programmable temperature controller controls the smoker cooker, and the smoke generator according to the plurality of the temperature probe inputs and cooking duration programmed into the programmable temperature controller to obtain optimal cooking results.

A microstrip patch antenna comprises a patch antenna element comprising a first conductive layer; dual probe feeds separate from each other and spaced from and field coupled to the patch antenna element for transmitting or receiving RF signals, each of the dual probe feeds having a conductor segment and a deltoid shaped conductive strip orthogonal to the conductor segment; the deltoid shaped conductive strips being coplanar; and a first dielectric material layer separating the first conductive layer and the coplanar deltoid shaped conductive strips.

The present disclosure generally relates to a capacitance sensing apparatus equipped with self-calibrating capacity and method of use thereof. The disclosure contemplates the determination using a secondary means of precise fluid levels according to five possible embodiments, and the use of the determined fluid level to recalibrate the capacitance sensing apparatus along its continuous analog level, namely, a variation of the thickness of the insulation of a capacitance sensing apparatus, the variation of the surface geometry of the capacitance sensing apparatus, the use of a dual-probe sensor including a probe with a varied surface geometry, the use of an electromagnetic sensor adjoining the capacitance sensor, and the variation of the electromechanical sensor to serve as a capacitance sensing apparatus. The disclosure also contemplates methods for using the sensing apparatus previously disclosed to measure a fluid level using a self-calibrating capacitance sensing apparatus. Finally, the present disclosure contemplates the use of an improved mathematical method associated with a variability measurement, such as an exponential smoothing method, to determining locally discrete changes in the variability measurement of the capacitance in order to determine a fixed fluid level.

A revisable orthopedic anchor and method of use for removably securing an anchor in bone, such as compromised or degenerated bone, is described herein. In one embodiment, the anchor makes use of dual probes and vector divergence of the distal tips of the probes to achieve superior bone purchase and pull-out resistance. In such an embodiment, the probes can be inserted one at a time into a hole formed in, for example, the pedicle bone. After the probes are inserted and joined at the proximal end, they have a greater pull-out resistance than a threaded anchor. Removing the anchor involves separating the proximal heads and reversing the implantation process. As a result of the unique bone anchor design disclosed herein, the devices and methods of the present invention allow for less complicated implantation and removal of orthopedic anchors, all while providing enhanced bone purchase when implanted in a patient.

An energy-saving automatic air exchanger is composed of two fans installed coaxially in different directions, heat recovering unit, dual-probe sensor, controller, frequency converter, sterilizing filter screen, fresh air channel and exhaust channel. The cold or heat of exhausted air can be recovered by heat recovering unit outdoor fresh air passes through above unit, and then returned back to room via fresh air channel. The rotation speed of fans can be regulated according to the concentrations of CO2 and smoke in room.

The dual probe assembly is used with a printed circuit board test apparatus. It includes a first, satellite test probe holder for a first, satellite test probe and a motor for rotating the first test probe holder. It further includes a second, main test probe holder for a second, main test probe and a motor for moving the second test probe holder. The first test probe holder can move without affecting the position of the second test probe, while the second test probe holder is connected to the first test probe holder in such a manner that movement of the second test probe holder moves the first test probe holder, wherein both a selected distance between the two test probes and a selected angular orientation therebetween can be achieved.

The invention discloses a total-detection method of volatile N-nitrosamine compounds in foods. The total-detection method comprises the steps: sample extraction, qualitative analysis, quantitative determination, result analysis, and result conversion, wherein the sample extraction comprises distilling, extracting, concentrating and performing constant volume operation; the qualitative analysis is performed by adopting a gas chromatography-mass spectrometer; the quantitative determination is performed by adopting a gas chromatography. According to the total-detection method, the N-nitrosamine compounds in the foods are totally detected by adopting an NO and N2O dual-probe ion technology, and thus the species of the N-nitrosamine compounds can be accurately screened, non-N-nitrosamine compounds can be effectively eliminated, the false detection and the leak detection are prevented; nitrosamine compounds can be once distinguished from multiple volatile organic compounds, limited and less relevant nitrosamine compounds can be directly qualified and quantified, and thus the analysis time is greatly saved.

The invention discloses a dual-source dual-probe orthogonal device for measuring water content by microwave and a measurement method, belonging to the technical field of microwave measurement; the device is used for measuring the water content of coals on a coal conveyor belt by a microwave transmission way. The device comprises emitting antennas of 9.4GHz and 2.4GHz; the emitting antennas are arranged above the coal conveyor belt in parallel along the conveying direction of the coal and are connected with a microwave signal source with the same frequency respectively; the device also comprises two receiving antennas of 9.4GHz and 2.4GHz; the two receiving antennas are arranged below the coal conveyor belt and are connected with a radiodetector with the same frequency respectively; the device also comprises the radiodetectors of 9.4GHz and 2.4GHz; the two radiodetectors are connected with a data collecting card; and the data collecting card uploads the collected microwave power signals to a computer in which a suitable processing program is installed, thus obtaining the real-time water content of the coals on the conveyor belt. The device and the method can improve the measurement range, improve the measurement precision simultaneously, overcome the contradiction between the measurement range and the measurement precision of the traditional method, effectively eliminate mutual interference and meet the requirement of dynamic measurement.

The invention belongs to the technical field of microwave application, and specifically relates to a dual-probe differential device for online measuring the water content of microwave and a measuringmethod. The device consists of microwave probe units, a probe fixed seat, a sliding platform a lead screw guide rail unit, a servo motor unit and a signal display control unit. The dual-microwave probes are mounted on the probe fixed seat in the material conveying direction, the vertical height difference is 1/4 of microwave length, the dual-microwave probes are integrally fixed on the sliding platform in the lead screw guide rail unit, the servo motor is connected with the lead screw guide rail unit to control the movement of the sliding platform, the signal display control unit is used for controlling the servo motor to rotate so that the dual-microwave probes are positioned at the positions of phase position extreme points respectively; dual-probe data are collected through synchronousdelay for carrying out differential inversion operation processing so as to obtain water information of a measured material. According to the dual-probe differential device, the measurement accuracy is improved, and rapid non-damage detection for water content of materials such as cereals, gravels and chemicals on a conveyor belt can be realized.

The invention discloses a dual probe-based angular displacement transducer on-line self-calibration method, which comprises the following steps: arranging two same reading heads which can perform synchronous measurement on rotary angular displacement of the same rotary object on a stator of a calibrated angular displacement transducer; fixedly connecting a rotor of the calibrated angular displacement transducer with a rotary part of the tested object; rotating a complete circle of 360 degrees; recording indicating values of the two reading heads at a series of special positions; and processing the indicating values to acquire a measurement error function of the transducer, thereby realizing on-line self-calibration of the calibrated angular displacement transducer. According to the self-calibration method, the synchronous measurement is performed by using the two reading heads arranged on the basis of a certain positional relation according to a circumferential closed principle in angular measurement, and on-line self-calibration of the transducer can be realized under the condition that no standard device or other high-accuracy angular displacement measuring instruments are available by processing the measurement data.

The invention discloses a primer group for detecting ingredients of a beef source by virtue of cross primers and dual-probe isothermal amplification and belongs to the field of detection methods for food quality control. The primer group comprises a pair of peripheral primers, a pair of cross primers and a pair of detection probe primers and specially comprises nucleotide sequences as shown in SEQ ID No: 1-SEQ ID No: 6. The invention also discloses a detection kit containing the primer group and the method for detecting the ingredients of the beef source by virtue of the cross primers and dual-probe isothermal amplification. The primer group has high specificity and high sensitivity and can only be used to detect the ingredients of the beef source and has no cross-reactivity with genes of meats such as mutton, rat meat and chicken; secondly, the method has the advantages of high detection speed and high detection efficiency; no complex devices are needed, only water bath is needed and thus the method is convenient and practical; the detected results of amplification products are read by test strips and the method is especially suitable for base layer on-site detection.

A method for eddy current sensing welding seam automatic following control of front dual probes mainly solves the technical problems that a control system of an existing traditional welding seam tracking sensor is complex and the existing traditional welding seam tracking sensor has complexity in calculation, is low in control precision, huge in size and large in noise, abrades easily and is high in cost and narrow in applied range, and misalignment influence in the welding process can be eliminated or weakened. The technical scheme is that after an input current of a dual probe eddy current sensor is subject to early treatment of each circuit in a preprocessor, the input current reaching a head coil impedor Z of the dual probe eddy current sensor, a measured value of a coil, the distance H between metal plates and a variation value of the relative area S form a voltage value signal U to be output, and accordingly linear relations between U and H and between U and S in the welding process are obtained to achieve welding seam automatic following control. The method is mainly used for welding seam automatic following of an automatic control system in the welding process.

An image locating control dual-probe automatic testing device based on midpoint tracking comprises a carrying table, two probe supports, a main control computer, a subdivision driver, a three-axis stepping motor and a camera. The subdivision driver drives a testing head assembly provided with the probe supports to rotate in the horizontal plane, the three-axis direction stepping motor drives the testing head assembly to move in the three-axis directions, the camera is arranged above the carrying table, the shooting direction of the camera faces downwards, and the testing head assembly is provided with a third driving mechanism driving the first probe support and the second probe support to carry out horizontal mirror image movements. According to the image locating control dual-probe automatic testing device based on the midpoint tracking, the automatic locating of dual probes is achieved by using image locating control technology to carrying out midpoint tracking of test points, the automatic locating testing of two test points of a sample is achieved, the labor intensity of testing personnel is reduced greatly, and the testing accuracy is improved. The locating mode is novel, the rotating type testing head assembly and the movable openable type dual probes are used ingeniously, the probes can be accurately located to any two test points of the sample to be tested, and thus the dual-probe automatic testing device can meet testing demands.

The invention belongs to the technical field of microwave ranging, and provides a dual-probe microwave tip clearance test system with a self-calibration function in order to overcome the defect that the measurement error increases due to resonance frequency deviation caused by insufficient reference signals and temperature change in the existing system. The system comprises a power divider, a detection circuit, a benchmark circuit, and a data processing module. The power divider generates two microwave signals of the same amplitude and phase and inputs the two microwave signals to the detection circuit and the benchmark circuit respectively, the detection circuit and the benchmark circuit generate a detection signal and a reference signal respectively, and the detection signal and the reference signal are input to the data processing module to get the microwave tip clearance. A simulated leaf is set at a fixed spacing, and the detection circuit and the benchmark circuit are of a completely symmetrical circuit structure, so that the influence of resonance frequency deviation caused by temperature change is avoided effectively; the reference signal is generated by the benchmark circuit, including phase shift generated when incident wave passes through a circulator and a probe; the measurement error is reduced greatly; and self-calibration dual-probe microwave tip clearance test is realized.

The invention discloses a dual-probe scanning ionic conductive microscope system based on a balance bridge and an imaging method thereof. The dual-probe scanning ionic conductive microscope system based on the balance bridge comprises a dual-probe scanning configuration unit, a core control unit and an upper computer operation unit; the dual-probe scanning configuration unit comprises a bridge configuration module and a scanning platform; a core control unit comprises a signal collection module, a piezoelectric ceramics control module, a micro machine control module and a signal output module; and the upper computer operation unit comprises an upper computer operation interface and a serial port communication module between the upper computer and a FPGA chip. The dual-probe scanning ionic conductive microscope system based on the balance bridge can better overcome the ion current drift, and improves the quality and stability of the scanning image. The invention can perform scanning imaging on the surface three-dimension appearance of a biologic sample under a biological environment, and can realize the non-contact, nanometer grade resolution and stable scanning.

The invention discloses cytomechanics characteristic measurement equipment. The measurement equipment comprises a laser force-measuring system, a microscopic observation system, a location control system, a signal receiving/converting and digital control system, a postprocessing software system and a liftable objective table; the laser force-measuring system comprises a dual-probe component, a dual-probe component weighted pressure head, a laser source and a location detector; the microscopic observation system comprises a monocular microscope and a multi-light source component; the location control system comprises a location detector displacement controller, a laser source displacement controller, a laser force-measuring system displacement controller, a sample table XY-axle displacementcontroller, a sample table X-axle displacement controller and a nanometer Z-axle displacement controller; the signal receiving/converting and digital control system comprises a displacement table controller, a location detector signal processing unit and a computer; and the postprocessing software system comprises a sensitivity determination module, a thermal curve analysis module, a force curveanalysis module and a global image processing module.

The invention discloses a nuclear power half-speed turbonator exciting winding fault diagnosis device base don a stator dual-probing coil and a diagnosis method. For the half-speed turbonator generally adopted by the nuclear power plant at present, the coils are arranged at the tops of two stator core teeth with one polar distance therebetween, the diagnosis method can judge the short-circuit fault and fault degree between the turns of the exciting winding according to the frequency domain and time domain features of two coil induced voltages. The device cannot be influenced by a running stateof a generator, and the accurate positioning the fault can be realized. The disadvantage of the prior art can be solved, the fault diagnosis device is more suitable for a diagnosis demand of the nuclear power half-speed turbonator set, and the diagnosis level is improved.

The invention relates to the technical field of physical property measurement and control in micro-nano regions, in particular to a fast dual-probe atomic force microscope approximation device and a fast dual-probe atomic force microscope approximation method based on laser detection. The fast dual-probe atomic force microscope approximation method includes that a master probe is adjusted along a horizontal X-axis direction and horizontal Y-axis direction, and a slave probe is adjusted along the vertical X-axis direction; laser devices of the master probe and the slave probe are adjusted, light rays emitted by the laser device of the slave probe are reflected by a reflective mirror and light spots of the light rays are emitted on a suspension arm beam of the slave probe vertically. The method has the advantages that incident light of the slave probe needing Z-axis adjustment is adjusted to be incident vertically by the reflective mirror, and accordingly deviation from the suspension arm can be avoided during adjustment, the laser devices only need to be adjusted once, and the approximation method is greatly simplified; then, the master probe and the slave probe are adjusted finely until both of the two probes contact with a sample, and then approximation operation is completed.

The invention provides a high-isolation power synthesis device, and belongs to the technical field of radio frequency and microwave power synthesis design. The device is mainly composed of a power dividing unit and a power combining unit, wherein the power dividing unit is composed of a one-to-two waveguide power divider and a waveguide-microstrip dual probe, a one-to-two microstrip power divider and an SMPM connector; the power combining unit is composed of a two-in-one waveguide power combiner, a waveguide 3dB bridge and a waveguide-microstrip dual probe. The power dividers are used for power distribution, so multiple paths of equal-amplitude same-phase power flows are obtained; the power amplification is conducted through the power amplification module, and finally, the obtained powers are combined, so larger output power is obtained. The device achieves the high-power, miniaturized and high-isolation signal output of the power divider/power combiner.