62results about How to "Change the resistance value" patented technology

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 relates to the field of power battery systems, provides a vehicular power battery pack detection system and detection method and a vehicle and aims to detect whether power battery pack cooling media leak or not. The detection system comprises a medium absorption unit, a storage unit, a liquid level detection unit and a control unit. The medium absorption unit is used for absorbing aleaked cooling medium of a power battery pack and changes own resistance value after absorption of the cooling medium; the storage unit is used for storing the power battery pack cooling medium; the liquid level detection unit is used for measuring cooling medium capacity of the storage unit; the control unit is connected with the medium absorption unit and the liquid level detection unit and usedfor judging whether the cooling medium leaks from the power battery pack or not according to the own resistance value of the medium absorption unit and / or the capacity measured by the liquid level detection unit. The problem of cooling liquid leakage detection failure caused by failure in insulation resistance decline due to the fact that a small quantity of cooling liquid leaks or the leaked cooling liquid does not intrudes a direct-current circuit in the prior art is solved.

The invention relates to an equivalent leakage current error influence test device and a test method thereof. The device includes a voltage regulator, a test transformer, a standard transformer, a CVT test piece and a resistance body; power source voltage is connected into the primary sides of the standard voltage transformer and the CVT test piece through the test transformer and a current limiting resistor; the primary side of the test transformer is connected with the voltage regulator; one end of the secondary side of the test transformer is grounded, and the other end of the secondary side of the test transformer is connected with one end of the current limiting resistor; the other end of the current limiting resistor is connected with the primary side of the standard voltage transformer and the primary side of the CVT test piece; the secondary side of the standard voltage transformer and the secondary side of the CVT test piece are both connected with a transformer calibrator; and the resistance body is connected in parallel with two ends of a single capacitor unit of the CVT test piece so as to simulate equivalent leakage current. With the equivalent leakage current error influence test device and the test method thereof of the invention adopted, the leakage current situation of the CVT due to rain and dust is successfully simulated, and it is verified that the accuracy of the CVT can still satisfy a requirement for a high accuracy grade under the leakage current situation.

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.

An electromagnetic input device comprises a protruding part, a pressure-sensitive module, a conductive module, and a control unit. The pressure-sensitive module comprises a circuit board and a capacitor. One surface of the circuit board is provided with a printed carbon film resistor. The capacitor is disposed on the circuit board. The capacitor and the carob film resistor form an RC circuit which has a time constant. The conductive module is connected with the protruding part. At least part of the conductive module is used for contacting with the carbon film resistor. Resistance of the carbon film resistor changes with changes in contact area of the conductive module with the carbon film resistor, so that the time constant changes correspondingly. The control unit is electrically connected with the RC circuit and used for detecting the time constant. When bearing external force, the protruding part drives the conductive module to move, the contact area of the conductive module with the carbon film resistor changes, the time constant changes along, and the control unit controls input line width of the electromagnetic input device according to the time constant. Through the application of the electromagnetic input device, the problems that the pressure-sensitive measuring component is complex to manufacture and low in sensing sensitiveness can be improved.

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 discloses automatic washing equipment which comprises a washing table, a water faucet, a liquid soap faucet, a sliding temperature adjustment piece mounted on the washing table, a water treatment device and a liquid soap mixing device which are mounted below the washing table, and a temperature adjustment device which is mounted at the lower end of the washing table and is connected with the lower end of the sliding temperature adjustment piece, wherein the sliding temperature adjustment piece is a heat conduction material; a sliding rheostat is mounted on the lower end surface of the washing table; one side, close to the sliding rheostat, of the lower part of a handle part is fixedly connected with a vertically arranged rheostat connection plate; the water treatment device comprises a tank body and a heater; the liquid soap mixing device comprises a shell, a liquid soap piston tube mounted in the shell and a water tank located below the liquid soap piston tube. During use, a user feels the temperature with a hand on the handle part, removes the handle part located on the table top of the washing table and puts the hand at a position below a water outlet of the water faucet when the handle part is removed properly.

An intelligent sign language perceptual glove includes a little thumb sleeve, a ring finger sleeve, a middle finger sleeve, an index finger sleeve, at least one flexible sensor disposed on the thumbsleeve and the thumb sleeve, the flexible sensor includes an outer cladding layer and an inner conductor therein, the outer cladding layer comprises an upper cladding layer connected up and down, lower overburden. A body cavity is arranged in the middle of the junction of the upper and lower sleeve layers, the length of the body cavity is smaller than that of the upper sleeve layer, Length of lower overlay, the hollow body cavity is filled with a flexible inner conductor, The two ends of the inner conductor are respectively connected with the inner ends of the No. 1 and No. 2 connecting wires,the outer ends of the No. 1 and No. 2 connecting wires are located outside the outer cladding layer, the inner conductor is a mixture of glue and conductive powder, the outer cladding layer is made of insulating material, and the inner conductor is arranged between the upper and lower cladding layers by means of injection or screen printing. This design is not only easy to apply to wearable equipment, good consistency, but also strong sensitivity and high accuracy.

The invention belongs to the technical field of LED lighting, and discloses a battery adaptation device for a handheld LED lighting lamp. The battery adaptation device comprises a mounting seat, a battery jar is arranged in the mounting seat, the battery jar is composed of a middle strip, a self-locking block and an arc angle pedestal, one end of the self-locking block is provided with a metal contact piece, the other end of the self-locking block is provided with a magnetic sheet, the self-locking block is elastically connected with the mounting base through an elastic resistance wire, and a rotating motor is arranged on the side, close to the elastic resistance wire, of the mounting base. Rapid adaptive connection of the LED lamp can be achieved through the four-way joint, the jack piece and the plug piece can be connected with a lamp set with a fixed plug, the bare connection terminal can be fixedly connected with a lamp set without a fixed plug, the self-locking contact piece can be automatically locked and connected with an electric wire which is short in wire end and cannot be wound, more application capacity is provided, different connectors can be connected, and assembling and connecting can be carried out in different modes.

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 thermal pressure sensor. When a springing cover is pressed, the springing cover is recessed into a heat resisting cavity, a friction column is pushed to move relative to a heat conductor, so that friction and acting are performed to generate heat, the temperature of the heat conductor is increased, the temperature of a heat resistance wire is increased along with temperature rise of the heat conductor, and resistance values are changed. The resistance variable of the heat resistance wire can be measured on the outer side of a base by a first electrode and a second electrode, so that deformation of the springing cover is calculated, and the stressed value of the springing cover is acquired.

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.

The invention relates to a touch substrate, a preparation method and a display device, and relates to the field of display technology. Wherein the touch substrate includes a substrate with several through holes; on the first surface of the substrate, a first electrode covering the several through holes is formed; on the second surface of the substrate opposite to the first surface, respective A plurality of second electrodes corresponding to a touch area; the second electrode at least partially surrounds the edge of the through hole at least in one place; an elastic conductor block is arranged in the through hole to form a hole in the through hole when the substrate is pressed. Electrical connection between the first transparent electrode and the second transparent electrode at both ends; the first transparent electrode is connected to the bias voltage input end; each of the plurality of second transparent electrodes is connected to the respective detection signal output end through a detection line. The invention integrates the touch sensing on the substrate, only needs to add the corresponding electrode forming process and the process of injecting the elastic conductor block into the through hole in the process of preparing the substrate to realize the touch sensing.