157 results about "Stadimeter" patented technology

The invention discloses a building interior wall flatness detection device and method, and belongs to the field of wall flatness detection. A building interior wall flatness detection device comprises a moving seat, the bottom of the moving seat is fixedly connected with multiple groups of moving wheels, the top of the moving seat is fixedly connected with a lifting frame, the building interior wall flatness detection device further comprises a lifting plate, and the lifting plate is slidably connected between the inner walls of the two sides of the lifting frame; according to the invention, through rotation of the vertical screw rod and the horizontal screw rod, the optical range finder detects the whole wall surface, so that the detection efficiency and accuracy are effectively improved; floating ash impurities attached to the wall surface are swept away by using a cleaning brush, so that the influence of dust impurities and the like on a detection result is reduced, and the detection accuracy is further improved; and in the moving process of the translation sleeve, the outer magnetic plate and the inner magnetic plate are utilized to generate a flow guide effect in the piston box, so that the floating ash scraped and swept by the cleaning brush moves directionally, interception and collection of the floating ash are realized, and the environmental quality in a detection area is effectively improved.

To achieve a configuration of controlling a light source unit having a plurality of light sources and a rangefinder by individual clocks to allow for setting the light sources at optional positions. The output light of a plurality of light sources of the light source unit is reflected from an object's surface, and a ToF sensor captures the reflected light to calculate the distance to the object. A sensor clock that controls the image capturing timing of the ToF sensor is the clock specific to the rangefinder, which is different from a light source unit clock that controls the light emission timing of the light sources of the light source unit. The rangefinder creates a difference calculation formula of a plurality of distance calculation formulas used to calculate the distance from each light source to the rangefinder to calculate the distance to the object using the created difference calculation formula.

The utility model discloses a bridge ship collision prevention active protection device which comprises a laser range finder, a control assembly, a main bridge pier, a main bridge bearing platform, a separation type ship collision prevention facility structure, a polyurethane foam rotary drum and a riverbed, the laser range finder and the control assembly are arranged on the upper portion of the main bridge pier, and the main bridge bearing platform is arranged at the bottom of the main bridge pier. A plurality of separated ship collision prevention facility structures are arranged on the periphery of the main bridge bearing platform on the main bridge piers, polyurethane foam rotating cylinders are arranged on the separated ship collision prevention facility structures, and the other ends, away from the polyurethane foam rotating cylinders, of the separated ship collision prevention facility structures are used for being buried in a riverbed to be fixed. When the distance between the ship and the main bridge pier is detected to be smaller than a certain range through the optical distance measuring instrument, the control assembly controls the gas generator to inflate the gas bag to generate buoyancy, the polyurethane foam rotating drum is pulled to the water surface through the buoyancy to make contact with the ship, and the situation that the ship collides with the main bridge pier and consequently the main bridge pier is damaged is prevented.

1. Name of the product in this design: Handheld Cooled Day and Night Observation Instrument. 2. Purpose of this design: For observation, and can be used with observation instruments such as thermal imagers, night vision devices, telescopes, and rangefinders. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention discloses a ground source heat pump pipeline settlement detection system and method, belongs to the technical field of underground energy facility safety monitoring, and mainly solves the problems that a traditional underwater environment detection means is low in precision and difficult to implement. The device is fixed to the inner pipe wall of the ground source heat pump through a waterproof protection shell, an integrated underwater laser range finder vertically emits laser to the inner wall of an outer pipe, and the settlement distance is calculated in real time based on the formula d = c * t / 2; meanwhile, the inclination angle of the inner pipe is monitored through a gyroscope chip, the output voltage U and the angular speed omega meet the condition that U = K * omega, and inclination changes are analyzed through the angular acceleration alpha = delta omega / delta t; geospatial data are collected in combination with a GIS module, pipeline features are uploaded to a server by a handheld terminal, and a settlement positioning map is generated; the electronic equipment sets threshold values dmax and theta max, and when the real-time data exceed the threshold values, sound-light alarm is triggered. The system is used for monitoring pipeline settlement displacement and inclination angle changes in a high-precision mode, and automatic fault early warning and precise positioning maintenance are achieved.

The invention discloses a real-time positioning system and method of an underwater glider and the underwater glider, and belongs to the technical field of underwater detection equipment. The real-time positioning system comprises an acoustic positioning system, an inertial navigation unit, an electromagnetic ocean current meter and a control unit. The acoustic positioning system is composed of an ultra-short baseline range finder electronic cabin and an ultra-short baseline electroacoustic transducer and used for emitting acoustic signals and carrying out underwater position calculation through a tracking ship. The inertial navigation unit comprises a gyroscope, an accelerometer and a magnetometer; the electromagnetic ocean current meter is used for acquiring ocean current speed data; and the control unit is used for receiving and fusing data of the acoustic positioning system, the inertial navigation unit and the electromagnetic current meter, and optimizing real-time position estimation of the underwater glider through a fusion algorithm based on Kalman filtering. According to the system, the path and the track of the underwater glider for executing the observation task can be accurately obtained, and the ocean observation and detection accuracy is greatly improved.

The invention discloses a focusing platform for an optical range finder and a working method, solves the problem of low flatness of the focusing platform of the optical range finder in the prior art, and has the beneficial effect of ensuring the focusing precision and stability of the focusing platform, and the specific scheme is as follows: the focusing platform for the optical range finder comprises an XY parallel piezoelectric positioning table, the XY parallel piezoelectric positioning table comprises a first base, the first base is hollow, an X-direction positioning table is arranged in the first direction of the hollow portion of the first base, a Y-direction positioning table is arranged in the second direction of the hollow portion of the first base, the X-direction positioning table and the Y-direction positioning table are both connected with the supporting base, and external decoupling modules are arranged on the portions, on the other side of the X-direction positioning table and the other side of the Y-direction positioning table, of the first base. The external decoupling module is connected with the supporting seat, the supporting seat is connected with the Z-axis compensation piezoelectric positioning table, the two sides of the Z-axis compensation piezoelectric positioning table are respectively provided with a homocentric-square-shaped hinge to serve as a guide mechanism of the Z-axis compensation piezoelectric positioning table, and the Z-axis compensation piezoelectric positioning table compensates external parasitism of the XY parallel piezoelectric positioning table top.

1. The name of the design product: hand-held telescope range finder (SW-1000X). 2. The use of the design product: for long-distance observation and has ranging function. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model discloses a protective telescope type range finder, which comprises a range finder body, the front surface of the range finder body is provided with a protective sleeve, the front surface of the protective sleeve is rotatably connected with a protective cover plate, the front surface of the protective cover plate is fixedly connected with a fixed plate, and the inner cavity of the fixed plate is provided with two symmetrical clamping holes. By pressing the shifting block, the clamping block enters the inner cavity of the sliding groove, at the moment, the limiting block extrudes the spring, the spring shrinks, the protective cover plate is turned over, the protective cover plate is attached to the front face of the protective sleeve, the shifting block is loosened, and the spring stretches to push the clamping block to enter the inner cavity of the clamping hole. Therefore, the lens of the telescope range finder can be protected through the protection device, dust accumulation caused by direct exposure of the lens of the telescope range finder is avoided, the lens is prevented from being damaged by impact, and the protection performance of the lens of the telescope range finder is improved.

A distance measuring device according to the present disclosure comprises: a light reception unit that outputs a pixel signal in response to received light; an optical element that changes and emits an optical path of incident light; and a distance measuring unit that performs distance measurement on the basis of the time at which light is emitted from a light source and the time at which the light is received by the light reception unit. The optical element is provided on an optical path from emission of light from the light source to reception of reflected light by the light reception unit, the reflected light being produced by said light being reflected by an object. The optical path is changed in accordance with the distance between the light source or the light reception unit and the object.

The invention provides a portable low-cost millimeter wave radiation imaging system and system. The system comprises a millimeter wave radiometer, an IMU module, a range finder, an optical camera, an acquisition module, a wireless transceiver module, a power supply module, an equipment appearance tool, client equipment and a detachable portable support rod. The millimeter wave radiometer is used for acquiring a millimeter wave radiation brightness temperature value of an observation scene, the IMU module is used for acquiring azimuth angle and pitch angle information of the meter wave radiometer, the range finder is used for acquiring the distance to the observation scene or a target, and the optical camera is used for acquiring an optical image of the observation scene; synchronously acquiring the data through an acquisition module; the collected data is transmitted to client equipment through the wireless receiving and transmitting module; performing two-dimensional uniform interpolation on the non-uniform azimuth angle and pitch angle on the client device; performing corresponding interpolation processing on the millimeter wave radiation brightness temperature value to generate a homogenized millimeter wave radiation image; and performing registration and fusion display on the millimeter wave radiation image and the optical image.

The invention discloses an underwater binocular camera calibration method based on laser assistance, and the method comprises the steps: firstly constructing an underwater stereoscopic vision binocular refraction-removing imaging model according to the Snell's law, and correcting an underwater imaging error; secondly, acquiring a camera internal reference matrix by using a Zhang Zhengyou calibration method; then, a laser range finder is used for projecting laser to the calibration plate to form a light spot, the center pixel coordinate of the light spot is extracted through a gray gravity center method, the three-dimensional coordinate of the light spot is calculated in combination with laser ranging data, and the initial value of an external parameter matrix of the binocular camera is solved; and finally, introducing a Bayesian optimization algorithm, and optimizing the constraint equation by taking minimization of a three-dimensional coordinate calculation error as a target so as to obtain an exact solution of an external parameter matrix of the camera. Through organic combination of a deep learning technology and binocular stereo vision, the parameter calibration precision of the underwater binocular stereo vision camera is improved, a reliable technical guarantee is provided for subsequent underwater concrete structure defect quantification, and the fine monitoring requirement in a complex water environment is met.

1. The name of the product of this design: night vision goggles. 2. Purpose of the product of this design: used for observation instruments, such as infrared thermal imagers, night vision devices, cameras, telescopes, rangefinders, etc. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: Stereoscopic diagram 1.

This invention belongs to the field of water environment monitoring technology, specifically relating to an in-situ spectral measurement device and method for shallow lakes. The measurement device includes a housing and a water-passing grid module. A vertical rangefinder, an adjustable mounting bracket, a fixed mounting bracket, and a communication module are mounted on the top of the housing. The adjustable and fixed mounting brackets are used to mount the light source and the spectrometer, respectively. A water inlet is vertically opened in the middle of the side wall of the housing. The water-passing grid module includes a light-blocking baffle and a traction ring. The light-blocking baffle is slidably mounted on the side wall of the housing and is correspondingly positioned to the water inlet. The traction ring is installed on top of the light-blocking baffle and is used to move the light-blocking baffle up and down along the water inlet as it floats with the water level. A signal trigger is located on the side wall of the housing near the top of the water inlet. This invention achieves fully automatic spectral measurement and combines the in-situ characteristics of field acquisition with the illumination stability of darkroom acquisition.

The invention discloses a multifunctional telescope type range finder calibration device based on an FPGA (Field Programmable Gate Array), relates to the technical field of range finding calibration, and solves the problem that the traditional calibration device cannot simulate the intensity of received signals at different distances and in different weather, so that the calibration precision deviation is too large. The range finder calibration device comprises a power supply module, a display reminding module, a control module and a calibration module. The power supply module comprises a power supply unit, a variable energy charging power supply, an LD driving unit and a high-voltage bias unit; the control module comprises an FPGA control unit; the laser comprises a laser sensor, an optical assembly and a laser attenuation sheet; the calibration module comprises an APD pre-amplification unit, a voltage comparator and a threshold adjusting unit; dynamically adjusting the calibration module by using the pulse signal model library through the FPGA control unit so as to complete the calibration of the multifunctional telescope type range finder; picosecond-level signal delay is carried out through the high-performance FPGA control unit, the laser flight time is accurately simulated, different received signal strengths can be truly simulated under different distances, and the calibration precision is improved.

A 3D scanning device includes a distance measuring module, a scanning platform, a control module and a power source module that are accommodated in a space defined by a shell that is operable to open and close. The distance measuring module includes a bracket detachably mounted on the shell, and multiple optical rangefinders on the bracket. The scanning platform includes a stepper motor in the space, and a support base rotatable by the stepper motor. The control module is communicatively connected to the optical rangefinders and the stepper motor. The power source module provides electric power to the optical rangefinders, the stepper motor and the control module.

The invention discloses a multi-beam image sonar and underwater optical image fusion-based comprehensive acquisition device, belongs to the field of underwater acoustic detection, and aims to solve the problem that the cooperative work accuracy of an existing multi-beam image sonar and an underwater optical image device is affected due to the fact that the working frequency of the existing multi-beam image sonar and the working focal length of the underwater optical image device are difficult to achieve ideal adaptation. The system comprises a sonar mechanism, an image acquisition mechanism, a calibration mechanism, a front end fixing block and a horizontal range finder. A wiring pipe is arranged in the center of the front end of the underwater propeller, and one end of the wiring pipe communicates with the interior of the underwater propeller; the front-end fixing block is mounted at the other end of the wiring pipe, and a horizontal range finder is mounted on the front side of the front-end fixing block; the sonar mechanism, the image acquisition mechanism and the calibration mechanism are arranged around the front-end fixing block at equal angles in the circumferential direction, the sonar mechanism and the image acquisition mechanism are both installed on the front-end fixing block, and the calibration mechanism is installed on the wiring pipe in a sleeving mode. The device is mainly used for collecting data of a target object during underwater detection.

This observation device (1) comprises a mechanical structure, a display module (5), an optical combiner (7), and an optical system (9) configured to direct an image from the display module (5) to the optical combiner (7). The optical combiner (7) directs to an observation area (11) the superposition of, on the one hand, a light beam from an observed scene (15) via a direct optical path (3) and, on the other hand, the image from the display module (5). The observation device (1) comprises a rangefinder (27) configured to emit and receive laser radiation to and from the observed scene (15) by passing said laser radiation through the direct optical path (3). Figure for the abbreviation: Fig. 1

The invention discloses a high-precision detection device and method for a large well chamber, and relates to the field of geotechnical engineering detection and test.The detection device comprises a host, a well mouth tripod, a depth step counting wheel, a motor and a spherical machine, and an optical range finder, a sonar probe, a camera and a depth sensor are integrated in the spherical machine; the host controls the motor to drive the depth pedometer wheel to control the lifting of the spherical machine, and the detection mode can be automatically switched; the invention further comprises a detection method based on the device. The method comprises the steps of controlling the spherical machine to ascend and descend, switching detection modes, collecting space information, conducting fusion processing to generate a three-dimensional digital model of the well chamber and the like. According to the invention, digital acquisition and three-dimensional model reconstruction of the spatial contour and the internal structure attribute of the large well chamber are realized, the detection modes can be automatically switched according to the well chamber environment, and the detection precision and efficiency are improved.

The invention discloses a multi-point suspension height measuring method for a large-scale structural member, which comprises the following steps: mounting a measuring rod below a measuring target point, mounting a laser range finder at the top of the measuring rod, and erecting a level gauge within the scale measuring range of the measuring rod; turning on laser of the laser range finder to align a laser point with a measurement target point; correcting the measuring rod, and measuring the distance between the top of the measuring rod and the target point through a laser range finder; and carrying out level scale observation by aiming at the measuring rod through a level gauge, taking the height of the first control point as a reference, and calculating the height from the target point to the reference ground through a formula: HB = LB + Lscale + (Hhorizontal B-Hhorizontal base), thereby completing the measurement. The method is easy to operate and high in measurement efficiency and precision, and measurement data can meet high-precision installation work of large structural parts.

The utility model discloses a tower crane tower body inclination monitoring device which comprises an installation support used for being connected with the top of a tower body, a first photoelectric distance measuring instrument and a second photoelectric distance measuring instrument are installed on the installation support, and the first photoelectric distance measuring instrument and the second photoelectric distance measuring instrument are installed in a mutually perpendicular and crossed mode. The first electro-optical distance meter and the second electro-optical distance meter are respectively provided with a level bubble, when the level bubble on the first electro-optical distance meter is centered, the measuring light of the first electro-optical distance meter is parallel to the vertical line of the tower body, and when the level bubble on the second electro-optical distance meter is centered, the measuring light of the second electro-optical distance meter is parallel to the vertical line of the tower body. And the measuring light of the second photoelectric range finder is parallel to the mounting surface of the tower body. According to the utility model, the gradient and the settlement value of the tower body of the tower crane can be continuously monitored, so that the tipping accident of the tower body is avoided.

The invention relates to an observation device (1) which comprises a mechanical structure, a display module (5), an optical combiner (7) and an optical system (9) which is configured to direct an image output from the display module (5) towards the optical combiner (7), the optical combiner (7) directing, towards an observation zone (11), the overlay of a light beam originating from an observed scene (15) via a direct optical path (3) and the image output from the display module (5), the observation device (1) comprising a rangefinder (27) which is configured to emit and receive a laser beam towards and from the observed scene (15) by passing the laser beam through the direct optical path (3).

The utility model relates to the technical field of range finders, and discloses a range finder for measuring distance through refraction, which comprises a placing frame, a range finder body is arranged in the placing frame, a working box is fixedly arranged on one side of the range finder body, a limiting assembly is arranged on one side of the working box, the limiting assembly comprises a limiting hole, and the limiting hole is communicated with the working box. The limiting holes are formed in the peripheral side of the limiting disc, and the limiting disc is fixedly connected with the rotating shaft. According to the working box, the limiting assembly is arranged and used for limiting and fixing the rotating shaft, so that the rotating shaft cannot deflect when shaking, and the situation that the reflection angle of a lens in the working box is changed due to shaking is avoided.

1. The name of the design product: multi-sensor integrated monitoring sighting device. 2. The use of the design product: used with observation instruments such as thermal imager, night vision device, telescope and range finder. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.