63results about How to "Change the resistance value" patented technology

The invention discloses a range finder. By arranging a gear, a detection ring, an inner ring, an outer ring, a resistance tape, a lead hammer and an electric conductor, when a support rod rotates to drive the gear to rotate, the gear drives the inner ring to rotate through the detection ring, the relative position between the electric conductor at the lower end of the lead hammer and the resistance tape is changed, the resistance value, between the resistance tape and the electric conductor, measured by a resistance measurement instrument is changed, and the rotating angle of the support rod is calculated; and by arranging an inner rod, an outer rod, a measurement body and a resistance strip, when a telescopic rod in the support rod stretches or shrinks, the relative position between the inner rod and the outer rod is changed, the position of the measurement body on the resistance strip is changed, the resistance, between the resistance tape and the electric conductor, measured by theresistance measurement instrument is changed, the length of the support rod is calculated, the angle of the range finder is adjusted, and the automatic leveling is realized.

The invention discloses automatic washing equipment. The equipment comprises a wash basin, a faucet and a hand sanitizer faucet, a slide temperature adjustment piece mounted on the wash basin, a watertreatment device, a hand sanitizer mixing device and a temperature adjustment device, wherein the water treatment device and the hand sanitizer mixing device are mounted below the wash basin; the temperature adjustment device is mounted at the lower end of the wash basin and connected with the lower end of the slide temperature adjustment piece; the slide temperature adjustment piece is made froma heat conducting material; a slide rheostat is mounted on the lower end face of the wash basin; one side, close to the slide rheostat, of the lower part of a handle part is fixedly connected with arheostat connecting plate arranged vertically; the water treatment device comprises a box body and a heater; the hand sanitizer mixing device comprises a housing, a hand sanitizer piston barrel mounted in the housing and a water tank located below the hand sanitizer piston barrel; and when the equipment is in use, a user senses a temperature via a hand put on the handle part, moves the handle partlocated on the surface of the wash basin till the temperature is appropriate and puts the hand below a water outlet of the faucet.

The invention relates to the CCD driving technology, more particularly to a system for realizing drive of an EMCCD signal by a transformer. According to the invention, problems that a current driving method has high power and is difficult to be realized can be solved. An amplitude adjustment of an output signal of the system is carried out by changing a resistance value of a digital potentiometerin a first adjustable voltage transformer, so that an output voltage of the first adjustable voltage transformer is changed and thus a primary coil voltage of a high frequency transformer; therefore,a digital control on the output signal amplitude is realized; according to a digital parameter value received by the second adjustable transformer, a resistance value of a digital potentiometer in the second adjustable transformer is changed, thereby changing an output voltage value in a DC-DC boosted circuit; and a direct current polarization is provided for an RLC resonant circuit through a direct current level clamped circuit, so that the high and low levels of the output signal are still in a normal working range after the change of the amplitude value of the output signal each time. According to the invention, circuit power consumption and dependence on a high speed and high power device are substantially reduced.

The invention specifically relates to a square wave and sawtooth wave generation circuit based on a memristor. The invention has the technical scheme that the square wave and sawtooth wave generation circuit consists of an in-phase input hysteresis comparator (1), an integral circuit (7) with an adjustable charging and discharging time constant, a first variable gain amplification module (14), a second variable gain amplification module (13) and a control module (12), wherein the control module (12) is respectively connected with the in-phase input hysteresis comparator (1), the integral circuit (7) with the adjustable charging and discharging time constant, the first variable gain amplification module (14) and the second variable gain amplification module (13). The square wave and sawtooth wave generation circuit based on the memristor has the advantages of simple structure, high precision, good stability and easiness in realizing automatic control.

The invention relates to a torque sensor (10), in particular for detecting torques generated on or in a joint of an articulated arm robot. The sensor has: a plurality of measuring spokes (1, 2, 3, 4) designed to deform under torque; and a plurality of strain gauges (DR 11 ,DR 12 ,DR 21 ,DR 22 ,DR 31 ,DR 32 ,DR 41 ,DR 42 ), wherein every two strain gauges are arranged on two opposite sides of a plurality of measuring spokes (1, 2, 3, 4). In this case, a plurality of strain gauges are each connected incorrectly in one of the at least two bridge circuits.

The invention relates to a novel electronic scale which comprises a shell, a pressure-sensitive bedplate, an MCU singlechip connected with the pressure-sensitive bedplate, a control button connected with the MCU singlechip, a display unit connected with the MCU singlechip and a power supply unit of an electronic element, wherein the shell is provided with a loading panel, the pressure-sensitive bedplate is arranged below the pressure-sensitive bedplate in the shell, the MCU singlechip and the power supply unit are arranged in the shell, and the control button and the display unit are arrangedon the shell. By using the pressure-sensitive bedplate as the sensing element, the invention achieves the advantages of light and thin structure, good using effect and durability, and simplifies the elements of the electronic scale. Therefore, the overall structure of the electronic scale is simpler and can be lighter and thinner, and the appearance can be more beautiful.

The invention discloses a bearing with a changeable resistance value. The bearing with the changeable resistance value comprises a bearing inner ring, a bearing outer ring, a retainer and a plurality of rolling bodies, wherein the bearing inner ring and the bearing outer ring are made of metal materials, the retainer is arranged between the bearing inner ring and the bearing outer ring, and the rolling bodies are arranged on the retainer and located between the bearing inner ring and the bearing outer ring. Two conductive end covers are embedded in the two sides of the retainer respectively and located between the bearing inner ring and the bearing outer ring, and the resistance value of the bearing can be changed through the conductive end covers along with the change of the rotating speed of the bearing. The bearing with the changeable resistance value has the beneficial effects that the two conductive end covers are embedded in the two sides of the retainer respectively and located between the bearing inner ring and the bearing outer ring, the resistance value of the bearing can be changed through the conductive end covers along with the change of the rotating speed of the bearing, and thus the purpose of changing the resistance value is realized.