89results about How to "Simple detection structure" patented technology

An arm member (52) detachably provided with a stylus arm (53) is rotatably held by a casing (11), where pivots (68) respectively project from both sides of a rotation center of the arm member (52), a first ball bearing (70) engaging with one of the pivots (68) is fixed to the casing (11) and a second ball bearing (70) engaging with the other one of the pivots (68) is fixed to the second ball bearing (70). A leaf-spring (75) has one end fixed to the casing (11) and the other end fixed to the second ball bearing (70). Since the second ball bearing (70) does not shift relative to the leaf-spring (75), measuring pressure remains stable.

The invention provides a detection structure of a shuttle peg upper base line of a sewing machine, and belongs to the technical field of sewing devices, which can solve the technical problem that theconventional detection structures of the shuttle peg upper base line is low in detection precision. A shuttle peg includes a cylinder having a through hole; the through hole is arranged along the axisof the cylinder; two ends of the cylinder have baffle plates extending outward radially, and a line winding groove is formed between the two baffle plates. The detection structure includes an electrical control module and a photoelectric sensor; a first reflective layer is arranged on the bottom of the line winding groove; light holes are formed in the baffle plates; and the photoelectric sensorcan emit a light beam to the first reflective layer. The detection structure is practical and simple, is low in cost, and is high in recognition precision.

Wind instrument includes a tubular body having a plurality of tone holes, and a plurality of keys capable of opening and closing the tone holes. Via a retaining member, detector units are provided within the tubular body in corresponding relation to the keys, and each of the detector units is generally opposed to the back surface of the corresponding key. Each of the detector units detects a relative distance to the back surface and outputs an electrical signal, on the basis of which an opening / closing state of the key can be detected. The retaining member, accommodated in the tubular body, positions and retains each of the detector units in such a manner that the keys and tubular body and the individual detector units are kept in non-contacting relation to each other.

The invention provides a relative-position detection method of a band-like material. The relative-position detection method is used for detecting the relative position and the width of the band-like material on a production line. According to the relative-position detection method, four electrode plates having the same size and shape are taken, every two electrode plates constitute a capacitor, the two capacitors are distributed on the left side and the right side of the production line of the tested band-like material, and the tested band-like material passes through the space between the upper two electrode plates and the lower two electrode plates of the two capacitors; the capacitance variable quantity of the capacitors is measured under the situations that the tested band-like material is not inserted and the tested band-like material is inserted, the lengths of the parts, inserted in the capacitors, of the tested band-like material are determined according to the tested band-like material, the width of the tested band-like material is determined according to geometrical distances, and deviation of the tested band-like material is determined according to the geometrical distances. The relative-position detection method is free of limitation of tested materials and environmental disturbance; when the widths of the tested materials are known and the capacitor on one side breaks down, single-side operation can be conducted.

Wind instrument includes a tubular body having a plurality of tone holes, and a plurality of keys capable of opening and closing the tone holes. Via a retaining member, detector units are provided within the tubular body in corresponding relation to the keys, and each of the detector units is generally opposed to the back surface of the corresponding key. Each of the detector units detects a relative distance to the back surface and outputs an electrical signal, on the basis of which an opening / closing state of the key can be detected. The retaining member, accommodated in the tubular body, positions and retains each of the detector units in such a manner that the keys and tubular body and the individual detector units are kept in non-contacting relation to each other.

A detection apparatus of a training machine has a shifting device, four sensors and a controller. The shifting device is mounted on an exercise device along a circular motion trace divided into four segments. The four sensors are respectively mounted on the body and correspond to the four segments. The controller determines multiple exercise states, including the rotation speed, the rotational direction, the first rotation speed, the second rotation speed and the force exerted on the exercise device, according to detecting signals from the sensors at a same time. The structure of the detection apparatus is simplified for ease of use.

The invention provides an imaging flow cytometer and relates to the field of optical instruments in biology and medical science. The problems that an existing imaging flow cytometer system is low in energy use rate in defocusing distance and speed measurement, complex in structure and high in cost are solved. A polarization optical system is introduced, richer biological information relative to samples to be measured can be acquired, and the imaging flow cytometer is mainly composed of a sample injection unit, a laser source, a speed measurement-focusing unit, an imaging unit and a central control unit. Meanwhile, based on the laser back scattering light spot imaging principle, the speed detection function of the samples to be measured and the automatic focusing function of the cytometer are finished. Through analysis of sequence signals of light signal intensity of the samples to be measured in different sensing positions of an array optical sensor and analysis of distribution of light signal intensity of the detection face of the sensor, the cell movement speed and the defocusing distance can be acquired at the same time, measurement is more accurate and visual, the energy use rate and the signal to noise ratio are higher by the adoption of a laser back scattering mode, and a single optical path detection structure is simpler.

The invention provides an automobile rollover prevention control system based on an electric power steering device, which belongs to the technical field of automobiles and aims to solve the problem that the automobile running safety cannot be effectively protected by the traditional automobile rollover prevention control system. The automobile rollover prevention control system based on the electric power steering device comprises an electronic control unit, a motor, a torque steering sensor and a vertical force detector which are respectively connected with the electronic control unit and a rotate speed detector which is used for detecting the rotate speed of the steering wheel, wherein the vertical force detector is used for detecting a vertical force borne by automobile wheels and sending the vertical force to the electronic control unit; when the vertical force borne by the wheels at one side of an automobile is less than a set value, the electronic control unit judges that the automobile has the rollover trend and sends a control signal to control a motor to generate a reverse moment so as to reduce the rotate speed of the steering wheel. The automobile rollover prevention control system based on the electric power steering device has the advantage that the rollover condition of the automobile is caused by overhigh rotate speed and overlarge rotor angle of the steering wheel can be effectively avoided.

The invention discloses a photoelectric correction sensor for a variable semitransparent coiled material and a detection method for the same, and belongs to the technical field of photoelectric correction detection. The photoelectric correction sensor and the detection method for the same are free from the influence of the stretching state of the detected coiled material during correction detection on the stretchable semitransparent detected coiled material. The photoelectric correction sensor comprises a support, wherein three groups of identical photoelectric detection units are arranged on the support, each group of the photoelectric detection units comprises a light source, a first collimation lens, a second collimation lens and a photosensitive device, the light source, the first collimation lens, the second collimation lens and the photosensitive device in the same group of the photoelectric detection units are sequentially arranged from top to bottom along a vertical straight line, the light source is arranged at the focus of the first collimation lens, the first collimation lens and the second collimation lens are oppositely arranged in parallel, and the photosensitive device is arranged at the focus of the second collimation lens; the voltage output end of each photosensitive device is in one-to-one connection with the three voltage output interfaces of the photoelectric correction sensor respectively.

The invention relates to a photovoltaic cleaning robot with a photovoltaic panel detection assembly. The photovoltaic cleaning robot comprises a machine body. A driving mechanism, a crawler mechanismand a sweeping mechanism are arranged on the machine body. The driving mechanism is electrically connected with the sweeping mechanism. The crawler mechanism drives the machine body to walk. The sweeping mechanism is fixedly arranged on the outer side wall of the front end of the machine body. The sweeping mechanism carries out cleaning operation under the driving of the driving mechanism. The photovoltaic cleaning robot further comprises the photovoltaic panel detection assembly. The photovoltaic panel detection assembly is arranged on the machine body. The photovoltaic panel detection assembly comprises a plurality of photovoltaic panel detection modules. Each photovoltaic panel detection module comprises a shell. Each shell is in a cuboid shape. The lower end of each shell is open, a brush is arranged at the lower end of each shell, and a camera and an infrared sensor are arranged at the upper end of each shell. According to the photovoltaic cleaning robot, the purposes of simplifying the detection structure of the photovoltaic cleaning robot and improving the applicability and increasing the automation degree of the photovoltaic cleaning robot are achieved.

The invention discloses a plane torsion spring device with fault detection and parameter correcting functions. The plane torsion spring device is composed of a plane torsion spring, a fault detection circuit and a torque sensor. According to the plane torsion spring device with the fault detection and parameter correcting functions, advantages of various plane springs are fully used, fault detection is carried out on elastic bodies through connection and disconnection between a detection fixing ring and installation rings, the service life of the elastic bodies can be effectively judged, bases are provided for improving the design and machining technology, the iterative development period can be easily shortened, and observation and analysis of the design quality of the plane torsion springs can be improved; changes of the elastic coefficient of the elastic bodies can be compensated and corrected in real time through the accurate torque detection of the torque sensor so that the performance of controlling the torque can be improved; in order to reduce cost, the torque senor can be removed in joint design, and one torque senor can be used for correcting all joints in regular inspection. The plane torsion spring device is simple in structure and suitable for joints of various robots and mechanical arms.

The invention discloses a planetary gear spherical surface measuring device which comprises dial indicators, dial indicator frames, a screw and a tooth mould seat. A conical tooth ring is arranged in the upper part of the tooth mould seat, and a positioning component of a circular hole is arranged at the lower part the tooth mould seat. The dial indicator frames are umbrella-shaped frame components, spherical trisection fork strips are arranged on the top, and vertical shafts are connected to the lower parts of the dial indicator frames. The bottom section of the vertical shaft is in clearance fit with the circular hole of the bottom face of the tooth mould seat and the middle section of the vertical shaft is in clearance fit with the inner hole of a planetary gear to be tested. The spherical surfaces on the top of the dial indicator frames are concentric with the spherical surface of the planetary gear to be tested which is positioned and arranged on the tooth mould seat; the three fork strips are respectively provided with one dial indicator which is installed into a through hole in a way that the dial indicator head faces downwards; through holes on the three fork strips are respectively arranged on an outer point, a middle point and an inner point of the spherical surface of the planetary gear to be tested; according to the invention, the standard planetary gear is arranged in the tooth mould seat, the three dial indicators are zeroed, then the planetary gear to be test is installed for comparative measurement, and the installation position of a cutter or a clamp is guided to be adjusted according to a real measurement result. The planetary gear spherical surface measuring device is not restricted by particular detection conditions, and is particularly applicable to the on-line detection of a production site.

The invention discloses a method and a circuit for credible design of an integrated circuit design process. The method comprises the following steps: acquiring a gate-level netlist of an integrated circuit; wherein the integrated circuit gate-level netlist comprises process deviation information; acquiring a to-be-tested path in the integrated circuit; configuring the to-be-measured path into a ring oscillator; adding a gate-level netlist of an on-chip detection circuit in the gate-level netlist of the integrated circuit to complete the layout design of a new circuit; performing first dynamicsimulation on the new circuit to obtain a frequency threshold range of the ring oscillator; and performing credible design verification on the new circuit by utilizing the detection circuit accordingto the frequency threshold range. According to the credible design method provided by the invention, the influence of the Trojan horse on the side channel information is directly reflected on the pathdelay, so that the process of modeling the Trojan horse is omitted, and the test difficulty is reduced; and meanwhile, the detection circuit is simple in structure and easy to integrate into an integrated circuit design process, so that the measurement accuracy is ensured.

The invention relates to the field of low-voltage electrical apparatuses, in particular to a method for calculating the residual life of a contact of a switching electric appliance. The method comprises the steps that the contact resistance of the switching electric appliance is collected, and linear regression is carried out on obtained contact resistance; according to a linear regression line, initial impedance rc and current impedance rn are obtained; according to the initial impedance rc, the current impedance rn and the impedance variation delta r of the whole life cycle of the switchingelectric appliance, the residual life of the contact of the switching electric appliance is calculated. The method for calculating the residual life of the contact of the switching electric appliancehas the advantages that the method is simple and belongs to a direct measurement method, results are accurate, the universality is good, and popularization is easy. The invention further relates to adetection device for the residual life of the contact of the switching electric appliance, which has the advantages that the structure is simple, and the reliability of detection results is high. Theinvention further relates to a contactor, which has the advantages that the structure is simple, and the reliability of detection results is high.

A housing (10) has a lock arm (20) that pivots about a fulcrum (23) that is rearward of a pivoting portion (24) of the lock arm (20). A detection terminal (50) has a rear support (52) supported on the housing (10) rearward of the pivoting portion (24). An action portion (54) of the detection terminal (50) is engaged with the pivoting portion (24) and displaces with the pivoting portion (24). The lock arm (20) deforms during connection of the housing (10) and a mating housing (90) so that contacts (53) of the detection terminal (50) are not in contact with mating detection terminals (97). However, the lock arm (20) returns resiliently when the housings (10, 90) are connected properly so that the contacts (53) contact the mating detection terminals (97).

A voltage value detected at the time of filling the liquid changes in accordance with viscosity. The voltage value is used as an indicator of the viscosity of the liquid at the time of a returning operation. Specifically, when the voltage value acquired at the filling time is low, the viscosity is determined as relatively high at the time of the returning operation, and a returning threshold value Th1 is set to a relatively high value. In concrete, the filling voltage is updated each time a filling operation is performed, and as the value of the filling voltage which is referred to at the time of the returning operation, the value which is acquired in the immediately preceding filling operation is used. Thereby, even when the liquid has relatively high viscosity, completion of the returning operation can be detected without increasing the time required before completion of the returning operation.

The invention discloses a planetary gear spherical surface measuring device which comprises dial indicators, dial indicator frames, a screw and a tooth mould seat. A conical tooth ring is arranged in the upper part of the tooth mould seat, and a positioning component of a circular hole is arranged at the lower part the tooth mould seat. The dial indicator frames are umbrella-shaped frame components, spherical trisection fork strips are arranged on the top, and vertical shafts are connected to the lower parts of the dial indicator frames. The bottom section of the vertical shaft is in clearance fit with the circular hole of the bottom face of the tooth mould seat and the middle section of the vertical shaft is in clearance fit with the inner hole of a planetary gear to be tested. The spherical surfaces on the top of the dial indicator frames are concentric with the spherical surface of the planetary gear to be tested which is positioned and arranged on the tooth mould seat; the three fork strips are respectively provided with one dial indicator which is installed into a through hole in a way that the dial indicator head faces downwards; through holes on the three fork strips are respectively arranged on an outer point, a middle point and an inner point of the spherical surface of the planetary gear to be tested; according to the invention, the standard planetary gear is arranged in the tooth mould seat, the three dial indicators are zeroed, then the planetary gear to be test is installed for comparative measurement, and the installation position of a cutter or a clamp is guided to be adjusted according to a real measurement result. The planetary gear spherical surface measuring device is not restricted by particular detection conditions, and is particularly applicable to the on-line detection of a production site.

The invention discloses a food detection system with accurate detection. A fourth shell is welded to one side of a first shell. The bottom of the first shell and the bottom of the fourth shell are each provided with a first groove. The two first grooves are communicated with each other; a second groove is formed in one side of the top of the first shell; the inner bottom wall of the second grooveis fixedly connected with a tank body. The first air cylinder is matched with the cover body, crushed food and moisture can be obtained and the food can be ground; the first pipe body, the electromagnetic valve, the filter screen, the second pipe body and the third pipe body are matched, the food and the water respectively enter the corresponding second shell and the corresponding third shell; andthrough cooperation of a second air cylinder, an L-shaped rod, a first sliding groove, a connecting rod and a second sliding groove, a second shell and a third shell are moved to the position of a fourth shell, then the food is accurately detected in multiple aspects such as the moisture, the crushing degree and the grinding degree of the same kind of food, and the accuracy and efficiency of detection data are improved.

The present invention discloses a torque detection mechanism and a torque detection system, and relates to the field of mechanical technologies. The torque detection mechanism comprises a tightening support, a tightening fixture, a tightening driver, and a static torque sensor, wherein the tightening fixture is connected to an upper end of the tightening support, and the tightening fixture is connected to the tightening driver; the static torque sensor is connected to the tightening driver, and an upper end of the static torque sensor is rotatable along with the tightening driver; and the static torque sensor and the tightening driver are disposed inside the tightening support. The torque detection system comprises at least one torque detection mechanism and a centralized control apparatus, wherein the centralized control apparatus is in communication connection with the torque detection mechanism, and the centralized control apparatus is used for controlling operation of the torque detection mechanism and recording a torque value. According to the torque detection mechanism and the torque detection system, a torque value of a threaded structure can be accurately detected with lowcosts, and irregular parts can be detected.

The present invention discloses a local-field-enhancement-type, wide-spectrum and high-response photoelectric detector, pertaining to the field of the photoelectric detectors. The detector comprises asilicon substrate, an IC circuit and a detector unit array arranged from bottom to top. The detector unit array comprises, arranged from bottom to top, a field effect transistor unit used for changing detection range(s) and providing conducting channel(s) and an enhanced absorption unit used for separating photo-generated electrons and holes after a donor-receptor local electric field is formed.The detector unit array is used for forward injection in a short-wave band and reverse injection in a long-wave band of detection signal current(s) capable of realizing wide-spectrum and high-response. According to the detector, the problems of the conventional photoelectric detector, for example, the light absorption of the material of the conventional photoelectric detector is limited by a reinforced material, and the energy level is fixed after the material contacts with graphene, so that the material can only realize forward injection or reverse injection, resulting in narrow detection spectrum and low response, are solved. The photoelectric detector can realize the detection effects of wide-spectrum and high-response in the visible light band and the near infrared band.

There are provided an interaction detecting portion including an interaction region in the whole of which an electrodynamic effect is obtained, and which has a simpler structure, and the like. There is provided an interaction detecting portion 1 including at least: a reaction region 2 which provides a field for an interaction between materials, and an electrode E1 (or a group of electrodes), having the same potential, which is provided so as to face the reaction region 2. In addition, there are provided a sensor chip, such as a DNA chip or a protein chip, including the interaction detecting portion 1, and an interaction detector using the detection portion 1.

The invention discloses a drying controlling method of a clothes drying device. The problem of low accuracy of drying detection of clothes is solved. The method comprises the steps that 1, the clothes drying device is started, drying duration is calculated, and step 2 is entered; 2, when drying duration reaches a preset time value, step 3 is entered; 3, the current rotational speed of a motor is detected, and step 4 is entered; 4, when drying duration reaches the preset time value, step 5 is entered; 5, the current rotational speed of the motor is detected, and step 6 is entered; 6, if the current rotational speed is larger than the rotational speed from previous detection, step 4 is returned, otherwise, the count value is added by 1, and step 7 is entered; 7, if the count value reaches a preset accumulated value, the motor brakes, and otherwise, step 4 is returned. The invention further provides the clothes drying device adopting the above drying controlling method. By means of the drying controlling method and the clothes drying device, not only can drying conditions of the clothes be monitored in real time so that energy waste caused by over-drying can be avoided, but the detection principle and the detection structure are simple.

A high-voltage discharge lamp lighting device provides a starting pulse voltage sufficient to turn on a high-voltage discharge lamp having terminal wire connections of variable length. A power conversion circuit is coupled to a commercial AC power source input and rectifies the AC input into a predetermined DC voltage output. A charging capacitor is coupled to the power conversion circuit. A full bridge circuit is coupled to the power conversion circuit and the charging capacitor and provides a rectangular wave AC output signal to a transformer primary winding circuit of at least a capacitor, a single switching element and a primary winding of a transformer. A low pulse voltage is induced in the primary winding and a transformer secondary winding is connected on one end to the high-voltage discharge lamp, wherein the low pulse voltage is stepped up to a high pulse voltage and applied to the high-voltage discharge lamp. A reference voltage is generated in a reference transformer winding representative of the high pulse voltage. A starting pulse equivalent value detection circuit is connected to the reference winding and detects a value associated with the reference voltage. A control circuit receives said value from said detection circuit, and variably controls at least one of a frequency of the single switching element or an ON impedance of the single switching element in association with said value, wherein said frequency or ON impedance is further associated with a starting pulse voltage sufficient to start the high-voltage discharge lamp.

A high-voltage discharge lamp lighting device provides a starting pulse voltage sufficient to turn on a high-voltage discharge lamp having terminal wire connections of variable length. A power conversion circuit is coupled to a commercial AC power source input and rectifies the AC input into a predetermined DC voltage output. A charging capacitor is coupled to the power conversion circuit. A full bridge circuit is coupled to the power conversion circuit and the charging capacitor and provides a rectangular wave AC output signal to a transformer primary winding circuit of at least a capacitor, a single switching element and a primary winding of a transformer. A low pulse voltage is induced in the primary winding and a transformer secondary winding is connected on one end to the high-voltage discharge lamp, wherein the low pulse voltage is stepped up to a high pulse voltage and applied to the high-voltage discharge lamp. A reference voltage is generated in a reference transformer winding representative of the high pulse voltage. A starting pulse equivalent value detection circuit is connected to the reference winding and detects a value associated with the reference voltage. A control circuit receives said value from said detection circuit, and variably controls at least one of a frequency of the single switching element or an ON impedance of the single switching element in association with said value, wherein said frequency or ON impedance is further associated with a starting pulse voltage sufficient to start the high-voltage discharge lamp.

A tightening-up detecting unit for the paper money tying belt is composed of a machine frame, a belt pressing drive wheel, a driven wheel with multiple raster hole, and an optical coupling consisting of an emitting head and a receiving head, which are arranged at both sides of said raster hole. After said belt is tightened up, the driven wheel is stopped and the motor is turned off.

A tape cartridge capable of recording and reading out large and small tape cartridges with different widths is provided. The tape cartridge comprises a pair of right and left hubs for winding a tape which is winded off from one hub and is wound around the other hub via tape guides. A passage for light injection and a passage for light ejecting of the tape end detection light are opened respectively on a side wall of a case of a main body facing a tape traveling path between the tape guide and the hub, and an optical path inverted body facing a pair of passages across the tape traveling path is arranged in the case of the main body. One of the passages for light injection and the passages for light ejecting in the large and small tape cartridges is formed at a prescribed distance from the reference surface.

The invention discloses a suspension object falling risk detection method and device, and the method comprises the steps: enabling a pair of conductive polar plates to be disposed on a wall body and a target suspension object, and enabling the pair of conductive polar plates to be disposed on the wall body when the target suspension object is assembled on the wall body, the first pole plate and the second pole plate are made to form a detection structure similar to a capacitor, the principle of the capacitor is combined, the change condition of the relative position between the target hanging object and the wall is determined by detecting the change condition of capacitance parameters between the first pole plate and the second pole plate, and compared with a traditional hanging object falling risk detection method based on a mechanical structure, the detection method has the advantages that the detection accuracy is high; the detection structure provided by the invention is simpler and the detection precision is higher.

The invention discloses a passive excitation type bridge damage assessment method, which comprises the following steps of: performing passive excitation with fixed excitation frequency on a bridge floor by using excitation wheels uniformly distributed on a single excitation wheel, and acquiring an acceleration signal transmitted to excitation teeth from the surface of a bridge by using an acceleration sensor; and determining the detected stiffness sudden change moment according to the maximum value point of the equivalent acceleration extracted from the time-frequency analysis result, determining the bridge damage position according to the inflection point in the corresponding power spectrogram, and evaluating the damage degree.

The invention relates to the technical field of clamp structures, in particular to a high-precision six-jaw duplex floating type self-centering clamping mechanism and a clamping method. The clamping mechanism comprises a clamp body and further comprises at least two sets of clamping jaws, and each set comprises at least three clamping jaws; an inclined mounting groove is formed in the clamp body; each clamping jaw comprises a diagonal draw bar, which is arranged in the mounting groove in a penetrating mode and can move in the length direction of the mounting groove, and a clamping jaw body, which is fixed to the end, extending out of the outer side of the clamp body, of the corresponding diagonal draw bar; plunger cylinders used for driving the diagonal draw bars to move along the mounting groove so as to tighten the clamping jaw bodies to clamp a workpiece are arranged in the clamp body; and the plunger cylinders are in one-to-one correspondence with the diagonal draw bars, the driving speeds of the corresponding plunger cylinders in the same set of clamping jaws are consistent, and the driving speeds of the plunger cylinders in different sets of clamping jaws are different. The clamp is simple in structure and convenient to operate, pre-clamping and pre-positioning of the workpiece are achieved by controlling the clamping speeds of different sets of clamping jaws, the clamping precision of the workpiece is improved, and the technical problem of turning thermal deformation is solved.