Abstract: A sensing device can detect material depth, liquid-level, and temperature. The sensing device has a probe, a control module, a volume sensing module, a thermal sensing module, an output module, and a power module. The probe has two material electrodes connected to the volume sensing module and a thermal electrode connected to the thermal sensing module. A rated voltage is applied at the material electrodes based on radio frequency admittance. A current deviation of the material electrodes is obtained by the volume sensing module, and calculated via the control module by material characteristics to obtain a correct storage amount of material. A temperature at each material depth is correctly detected by the thermal electrode. Steel cable is used as the material of the material electrodes of the probe to detect material depth or liquid level with high impact resistant ability.

Abstract: An FMCW radar level meter has an RF signal processing module, an intermediate frequency (IF) signal processing module, and a computation and display module. A signal generator of the RF signal processing module generates a first RF signal, which is radiated by an antenna to a measured object. The antenna received a second RF signal reflected by the measured object. The IF signal processing module processes the second RF signal and compares the first RF signal with the second RF signal. The computation and display module calculates and displays a distance between the FMCW radar level meter and the measured object. Using the RF signal processing module and the IF signal processing module to process the second RF signal, the issues of noise and temperature coefficient shift can be resolved.

Abstract: A measuring method for a frequency modulation continuous wave radar level meter is performed after presetting a previous-cycle weight and a current-cycle weight and acquiring a measured result in a previous cycle, and has steps of constantly transmitting a frequency modulation (FM) signal and receiving multiple reflected signals, obtaining a frequency difference between the FM signal and each reflected signal, selecting a characteristic frequency from a frequency spectrum, and calculating a measured result in the current cycle taken as the measured result in the previous cycle for calculating a measured result in a next cycle with a sum of a product of the measured result in the previous cycle and the previous-cycle weight and a product of a distance corresponding to the characteristic frequency so as to reduce variations of the measured result in each cycle and facilitate statistical analysis.

Abstract: The present invention relates to a horn antenna device. The horn antenna device has a step-shaped signal feed-in apparatus and a conical horn antenna. The step-shaped signal feed-in apparatus has a stepped body having multiple stairs and a connecting pin. The stepped body is adapted to radiate electromagnetic waves and receive a reflection of the electromagnetic waves. According to the structure of the step-shaped signal feed-in apparatus of the invention, the resonating modes are easy to be determined. The directivity and the signal-to-noise rate are improved. In addition, the connecting pin is directly connected to the stairs for improving the signal stability of the horn antenna device.

Abstract: A level transducer has a power supply module, a tuning fork module, a sensing-phase corrector and a controller. The tuning fork module has a tuning fork, at least one piezoelectric driving element, and at least one piezoelectric sensing element. The at least one piezoelectric driving element and the at least one piezoelectric sensing element are stacked on each other, and are mounted on the tuning fork. The power supply module is electrically connected and outputs a voltage to the at least one piezoelectric driving element to deform the at least one piezoelectric driving element. The at least one piezoelectric sensing element is extruded and outputs a voltage signal. The sensing-phase corrector obtains the voltage signal and outputs a clock signal to feedback control the voltage on the at least one piezoelectric driving element to optimize a deformation frequency of each piezoelectric element.

Abstract: The invention relates to a self-calibration method for a photoelectric liquid level switch and apparatus using the same. The apparatus has a control module, a light emitting module and a light sensing module. The light emitting module emits a light beam into a container. The light sensing module then detects a reflected light beam. The control module acquires two values respectively standing for a first liquid level status and a second liquid level status. When a default threshold value is beyond a range between the two values, the control module calculates a new threshold value in the range between the two values. The control module then replaces the default threshold value with the new threshold value. The threshold value is adjustable for any kind of liquid.

Abstract: A self-alignment filling level detecting device has a reflector and a sensor detachable from each other. The sensor has a light emitter, a light sensor, and a controller. The light sensor receives different light intensities when the reflector is assembled to the sensor and when the reflector is not assembled to the sensor. Thus, the controller determines whether the reflector has been accurately engaged and aligned with the sensor or not based on sensing results of the light sensor. Since the reflector and the sensor are detachable from each other, either the reflector or the sensor can be replaced individually if any one of them malfunctions.

Abstract: A sensing device can detect material depth, liquid-level, and temperature. The sensing device has a probe, a control module, a volume sensing module, a thermal sensing module, an output module, and a power module. The probe has two material electrodes connected to the volume sensing module and a thermal electrode connected to the thermal sensing module. A rated voltage is applied at the material electrodes based on radio frequency admittance. A current deviation of the material electrodes is obtained by the volume sensing module, and calculated via the control module by material characteristics to obtain a correct storage amount of material. A temperature at each material depth is correctly detected by the thermal electrode. Steel cable is used as the material of the material electrodes of the probe to detect material depth or liquid level with high impact resistant ability.

Abstract: A magnetostrictive position transducer and a magnetostrictive sensing element thereof are characterized that a magnetostrictive sensing element is mounted inside an outer tube, the magnetostrictive sensing element has two end mounts respectively mounted on two ends of an insulating and hollow tube and a magnetostrictive wire mounted through the tube, the magnetostrictive wire has two wire adapters respectively mounted on two ends of the magnetostrictive wire and respectively mounted in the end mounts so that the magnetostrictive wire is contactlessly mounted through the tube, a sensing module is mounted in one of wire adapter to sense signal variation on the magnetostrictive wire. With the foregoing structure, the magnetostrictive sensing element does not require devices for applying pre-stress and damping, thereby simplifying structure and ensuring high stability in measurement of the magnetostrictive position transducer.

Abstract: A turbine vibrator has a housing, an eccentric rotor mounted in an air chamber of the housing and two covers mounted respectively in two mounting recesses of the housing. Two threaded walls defined respectively around the mounting recesses of the housing have same threaded directions. Therefore, the mounting recesses, the air chamber and the other mounting recess are formed sequentially so axes of the mounting recesses and the air chamber are disposed along a same line. Manufacturing processes of the housing is reduced and shearing forces applied to the shafts of the eccentric rotor are reduced so the turbine vibrator has a prolonged useful life. Moreover, as a rotating direction of the eccentric rotor and the fastening directions of the covers are the same, when the turbine vibrator operates, the covers tighten against the housing. The first and second covers do not drop from the housing.

Abstract: A disclosed method for manufacturing a display device with optical/electronic structures according to the present invention comprises: a first step for forming the optical/electronic structures on the primary side of a release film onto which an adhesive is applied, a second step for attaching the primary side of the release film to a substrate or a film, and a third step for removing only the release film from the substrate or film while the optical/electronic structures are attached thereto. According to the invention, the optical/electronic structures are transferred and attached to the substrate or film of the display device after firstly being attached to the release film.

Abstract: A protecting casing for a transducer has an outer casing, an inner casing, a circuit board and a connector. The inner casing is detachably mounted in the outer casing and has a mounting hole and a cap detachably mounted on the inner casing to cover the mounting hole in a watertight manner. The circuit board is detachably mounted in the inner casing and has a surface, a circuit formed on the surface and a plug with terminals extends out of the inner casing. The connector is detachably mounted to the outer casing and is electrically connected between the circuit board and an external functional accessory component. Within such an arrangement to facilitate maintenance, assembly of the transducer, and effectively avoid intrusion of water, foreign object and the like.

Abstract: A plumb probe assembly for a level measuring device has a plumb and a connection assembly. The plumb has an inner connecting tube. The connection assembly has two connectors and two clip brackets. The connectors are slidably mounted together while one of the connector firmly connects to the inner connecting tube of the plumb. The clip brackets are movably connected together by at least one resilient device supplying a clipping force and clip around the connectors to hold connectors firmly together. When a force greater than the clipping force, applied to the plumb, the clip brackets separate and the plumb falls into the particulates in the container. The plumb will not cause damage to a particulate discharging device and will disconnect with the connection assembly. A replacement plumb may then be attached to the connection assembly for continued operation.

Abstract: A metallic ball has a sliding sleeve, a shell, at least one magnet and a mounting bracket. The sliding sleeve has an open upper end, an open lower end and an outer surface. The shell is spherical, is mounted securely around the sliding sleeve between the open upper end and the open lower end of the sliding sleeve and has a reinforcing disk mounted around the outer surface of the sliding sleeve and has a top surface and may have a protruding portion. The magnet is on the top surface of the reinforcing disk. The mounting bracket is mounted around the sliding sleeve and on the top surface of the reinforcing disk to cover the magnet and has a wall extending toward and engaging the reinforcing disk and completely covering the magnet to effectively avoid the magnet being broken or damaged.