15results about How to "Simple circuit" patented technology

The invention discloses an imaging method and system based on cosmic ray muon transmission, which are applied to a control mechanism, and the control mechanism is electrically connected with at least one detection module. The imaging method based on cosmic ray muon transmission comprises the steps that the response state of at least one detection module is obtained, the detection module comprises a plurality of sensor units, and the sensor units are arranged in a string shape. And preprocessing the response state to obtain muon flux in unit area, unit time and unit solid angle. Based on the topographic data, the landform data and the muon flux, the density distribution in the muon ray irradiation range is reversely deduced through a preset algorithm. And performing visual imaging based on a density distribution result. According to the method, the working efficiency of muon geological imaging is improved, the system complexity is reduced, the adaptability in a narrow working environment is remarkably enhanced, and an efficient and convenient solution is provided for the fields of geological exploration, engineering detection and the like.

The invention relates to a sensing system based on a surface acoustic wave oscillator. The sensing system comprises two resonators, two oscillating circuits, a temperature controller, a fluid pipeline, a frequency mixer, an amplification function comparator and a frequency divider, the temperature controller, the resonators and the oscillating circuits are arranged on the fluid pipeline, the two resonators are located on the upper side and the lower side of the temperature controller respectively, and the two oscillating circuits are located on the upper side and the lower side of the two resonators respectively; the temperature controller transmits heat to the resonators on the upper side and the lower side through the fluid pipeline, the resonators adjust resonant frequencies according to temperature changes and output different frequencies to the adjacent oscillating circuits, and the two oscillating circuits are connected with the frequency mixer. The mixer outputs a difference frequency signal to the amplification function comparator, and the amplification function comparator outputs a square wave signal to the frequency divider.

The utility model discloses a kind of LED multicolor display control circuit, including LED1 chip, power VCC1, power VCC2, triode Q1, triode Q2 and triode Q3, power VCC1 is connected with the anode of the first light-emitting diode of triode Q1's collector, triode Q2's base and LED1 chip respectively, power VCC2 is connected with the base of triode Q1, triode Q2's collector and triode Q3 respectively;The anode of the second light-emitting diode of triode Q1's emitter is connected with LED1 chip, the cathode of second light-emitting diode is grounded, the anode of the third light-emitting diode of triode Q2's emitter is connected with LED1 chip, the cathode of third light-emitting diode is grounded, the cathode of the first light-emitting diode of triode Q3's collector is connected with LED1 chip, the emitter of triode Q3 is grounded;The utility model has the advantages of reducing cost, reducing device, simplifying circuit and improving stability.

Provided is an electrical discharge detection system comprising a master breaker 10, a plurality of branch breakers 20, a plurality of electrical discharge detection units 30, and at least one current-limiting resistor 33, wherein: each of the branch breakers 20 is configured so as to block a circuit on the basis of the difference in current value between the current I1 flowing in a first electrode and the current I2 flowing in a second electrode; each of the electrical discharge detection units 30 is provided with an electrical discharge detection part 31 and a switch 32; the electrical discharge detection parts 31 are configured so as to detect noise superposed on a voltage or current; the switches 32 are electrically connected to the first electrodes of the branch breakers 20; the secondary sides of the switches 32 in each of the electrical discharge detection units 30 are electrically connected to shared wiring 83, 81; the wiring 81 is electrically connected to an electrode, among a plurality of electrodes in the master breaker 10, that is different from the electrode to which the first electrodes of the branch breakers 20 are electrically connected; and the current-limiting resistor 33 channels a current IE, which is part of the current I1, to the wiring 83, 81 when the switches 32 are closed.

The utility model relates to a pilot valve assembly and an electromagnetic valve, and the pilot valve assembly comprises a pilot valve seat which is provided with an axially through oil inlet hole and a sleeve, and the sleeve surrounds the oil inlet hole; the pilot valve element comprises a valve disc, a column body and an oil outlet hole, the column body can be axially and movably located in the sleeve, a sealing end face is arranged at the end of the column body and used for abutting against the bottom wall of the sleeve and surrounding the oil inlet hole, and the oil outlet hole is located on the radial outer side of the sealing end face and axially penetrates through the valve disc and the column body; and through axial movement of the column body in the sleeve, the through flow of oil between the oil inlet hole and the oil outlet hole is controlled. Compared with an oil return hole formed in the circumferential direction of the sleeve of the pilot valve seat, the oil return hole is formed in the pilot valve element, and the oil return hole and the oil outlet hole are combined into an axial through hole, so that an oil loop of the pilot valve assembly is simpler, and the overall structure of the pilot valve assembly is more compact; the processing technology is simple and the processing cost is lower.

The utility model aims to provide the testing device which is simple in operation, low in cost, complete in function and capable of efficiently evaluating the performance of the LED backlight system. The circuit comprises an LED series module, a current sampling module, a channel switching module, a signal amplification module and a signal processing module which are connected in sequence, the LED series module is connected with a product, the LED series module comprises a plurality of groups of LED modules which are arranged in parallel, each LED module comprises five groups of LEDs which are arranged in series, and the signal processing module is connected into an external upper computer. The utility model is applied to the technical field of backlight simulation tests.

The utility model relates to a toothbrush control circuit supporting brush head replacement reminding. The toothbrush control circuit comprises a main control unit, a dry battery and a boosting unit. Wherein the voltage of the dry battery is first direct-current voltage, and the boosting unit boosts the first direct-current voltage into second direct-current voltage, so that the electric energy of the dry battery is dried, the electric quantity is used up, and the service time is prolonged; the motor driving unit is controlled by the main control unit to drive the hollow cup motor to work; the main control unit counts the working time length of the coreless motor, and controls the three-color lamp to perform corresponding display when the working time length of the coreless motor reaches the rated time length; the three-color lamp also displays the charging state and the electric quantity; therefore, replacement reminding of the brush head of the electric toothbrush is achieved, the circuit is simple, the size is small, and the cost is low.

The lens comprises a lens body, the peripheral wall of the lens body is a total reflection surface, a groove for containing a light source is formed in the bottom wall of the lens body, the peripheral wall of the groove forms a first incidence surface, the top wall of the groove is concaved upwards to form a second incidence surface, a pit is formed in the middle of the top wall of the groove, and the top wall of the pit forms a third incidence surface. The top wall of the lens body forms a first emergent face, a first emergent portion is arranged in the middle of the first emergent face, the top wall of the first emergent portion is concave inwards to form a second emergent face, a second emergent portion is arranged in the middle of the second emergent face, the top wall of the second emergent portion is concave inwards to form a third emergent face, the third emergent face is an arc face formed by rotation of a convex arc, and the second incident face is arranged below the second emergent face. According to the scheme, the main light spots and the auxiliary light spots with clear transition boundaries are formed through the single lens, the light and shade alternating illumination effect is achieved, the main light irradiates the main light spots of the main exhibits, the auxiliary light spots irradiate the accompanying articles on the peripheries of the main exhibits, and the spatial layering sense is improved.

This utility model discloses a simulated flame heater, comprising a shell with an air outlet, a movable base assembly at the bottom, a simulated flame assembly at the front, a combustion chamber inside the shell, a burner head at the bottom of the combustion chamber, an air outlet duct communicating with the air outlet at the top of the combustion chamber, a fan on one side of the air outlet duct, and an air outlet of the fan communicating with the air outlet duct. A thermoelectric generator is also installed inside the shell. The electrical potential generated by the thermoelectric generator can power the simulated flame assembly and the fan, utilizing waste heat from the burner to generate electricity. It is self-generating with high efficiency, eliminating the need for batteries to power the fan, saving energy, being convenient to use, energy-saving and environmentally friendly, and having a simple structure. The self-generating structure also simplifies the circuitry and extends the heater's lifespan.

The present application relates to the field of electrical technologies, and discloses a constant-current control circuit and a method for constant-current control. The circuit includes: a load module, including a plurality of load units connected in parallel; a controller, connected to each load unit of the load units and configured to output a first level signal to the load unit; and a constant-current control module, connected to the controller and further connected to each load unit of the load units via at least one divided resistor, configured to receive a first voltage signal sent by the controller, and generate a second level signal and a second voltage signal according to the first voltage signal and output the second level signal and the second voltage signal to the load module. According to a technical solution provided by the present application, the controller may cooperate with the constant-current control module to control opening or closing of the plurality of load units and a magnitude of a current passing through the load unit without increasing the number of constant-current control related devices and redundant switch transistors in a control circuit for an electronic device, and the opening or closing of each individual load unit may be independently controlled.

The invention provides a self-closing awakening CC detection awakening circuit, a vehicle and a control method.The self-closing awakening CC detection awakening circuit comprises an awakening switch driving circuit, a DCDC circuit, a reference signal generating circuit, a CC signal sampling circuit, an awakening signal generating circuit, a control module and a latch switch circuit; the CC wake-up self-closing function is realized through the latch switch, that is, the control module drives the latch switch to enter a latch state after charging is finished, so that CC wake-up is closed to enable the control module system to enter a dormant state, and the power consumption current of the system meets the standard requirement of the dormant state; and the latch switch is powered down through the gun pulling action of the charging gun to exit from the latch state, so that the closing of the CC wake-up function is relieved, and the scheme has the advantages of simple circuit, low cost, simple logic, high reliability and the like.

The invention relates to a wireless sensing system for fluid flow detection based on an SAW oscillator. The wireless sensing system comprises a resonator, an oscillating circuit, a heating and temperature sensing module, a temperature stabilizer, a fluid pipeline, a frequency mixer, an amplifier, a signal generator and a comparator. The oscillating circuit, the resonator, the temperature stabilizer and the heating and temperature sensing module are sequentially arranged on the fluid pipeline; the temperature stabilizer transmits heat to the resonator through the fluid pipeline, the resonator adjusts resonant frequency according to temperature changes and outputs the adjusted resonant frequency to the oscillating circuit, the oscillating circuit is connected with the amplifier, the amplifier amplifies the oscillating frequency output by the oscillating circuit and then transmits the amplified oscillating frequency to the frequency mixer, and the signal generator outputs sine wave signals to the frequency mixer. The mixer outputs the difference frequency signal to the comparator. According to the invention, the linear interval of the intermediate frequency signal along with the fluid flow change is improved, the service life of the system test is prolonged, and the null drift stability is improved.

The utility model discloses a charging switching device, a charging detection device, charging equipment and a vehicle. The charging switching device comprises a charging switching device body; the input end and the output end are arranged on the charging switching device body, the input end is used for being connected with a direct current charger, and the output end is used for being connected with a vehicle; wherein the charging switching device body comprises a charging controller and a detection circuit connected with the charging controller; wherein the detection circuit comprises a detection point, the charging controller is connected to the detection point, and the connection state of the direct current charger and the vehicle is detected through the detection point. The device does not need to respectively set voltage detection points for the charger and the electric automobile, and the loop is simple.

The invention provides a communication method and system based on visible light. The method comprises the steps that data to be transmitted are converted into transmission data in an optical signal form from a data sending end through a first data converter; the second data converter is used for transmitting the transmission data in the optical signal form to a data receiving end through an optical fiber so as to convert the transmission data in the optical signal form into transmission data in an electric signal form; at the data receiving end, converting the transmission data in the electric signal form into transmission data in an analog digital signal form through a third data converter; and receiving the transmission data in the analog digital signal form through a central processing unit of the data receiving end. Through the combination of the photoelectric signal conversion device and the optical fiber, communication is established between two different parts of products, and the problem of signal distortion caused by long communication line or loop interference can be effectively avoided.

The utility model discloses a duplex pump control type hydraulic synchronizing system which comprises a hydraulic oil tank and a driving motor, the hydraulic oil tank is respectively connected with two oil inlets of a same-displacement duplex pump through a main pipeline, and an output shaft of the driving motor is connected with a transmission shaft of the same-displacement duplex pump. An oil outlet in the left side of the same-displacement duplex pump is connected with the left hydraulic cylinder through a left oil outlet pipeline, an oil outlet in the right side of the same-displacement duplex pump is connected with the right hydraulic cylinder through a right oil outlet pipeline, and the movable end of the left hydraulic cylinder and the movable end of the right hydraulic cylinder are connected with a lifting load. Compared with a traditional valve control mode, a loop is simpler, the double pump with the same displacement serves as a power unit and a control unit at the same time, the valve control link and a mechanical synchronization mechanism are omitted, the size is smaller, efficiency is higher, and the double pump is particularly suitable for integrated equipment with a hydraulic system.