304results about How to "Safe by design" patented technology

The invention discloses a resistance simulation device for a wire-control steering test bed of an automobile. A piston rod of a load cylinder (1) is connected with a gear rack (3) of a steering executing mechanism of the automobile to act a lateral force on a rack mechanism (3) to simulate the ground lateral resistance stressed during the steering of the vehicle. An oil inlet and an oil outlet of the load cylinder (1) are connected with working oil ports A and B of an electromagnetic directional valve (5) respectively; the oil inlet P of the electromagnetic directional valve (5) is connected with the oil outlet of a main pump (10); the oil outlet of the main pump (10) is connected in parallel with an electromagnetic proportional overflow valve (12); the oil inlet of an overflow valve (7) is connected in parallel with an auxiliary pump (8); the oil inlets of the main pump (10) and the auxiliary pump (8) are connected with a filter (9); and a resistance simulation controller (6) is connected with the electromagnetic directional valve (5) and the electromagnetic proportional overflow valve (12) to output a current signal to the electromagnetic proportional overflow valve (12) so as to control the overflow pressure of the electromagnetic proportional overflow valve (12).

The invention provides a capacitance deterioration detection device for a resistance-capacitance device of railway signals equipment. The detection device comprises a current sampling module, an amplification module, a filtering module, an A / D (Analog / Digital) conversion module, a processing unit, a communication unit and an indication and alarm unit, wherein a primary side of the current sampling module is serially connected at any section between the end A and end B of a detected resistance-capacitance device, and the output end of the current sampling module is connected with the amplification module; and the amplification module, the filtering module, the A / D conversion module, the processing unit, the communication unit and the indication and alarm unit are sequentially connected. The device provided by the invention is simple in circuit structure and scientific in design, can be used for performing real-time and on-line isolated detection on the capacitance capacity of the detected resistance-capacitance device and realizing the on-line measurement and status display of the capacitance, is timely and accurate in detection, high in efficiency, high in accuracy, strong in interference resistance, safe and reliable, can ensure the uninterrupted continuous operation of the equipment, is favorable for improving the railway transportation efficiency, and also can be used for greatly reducing the workload of manual detection, reducing the labor intensity of detection technicists and saving the cost.

The invention provides an improved kitchen juicer blender, which includes a device body, a stirring cup, a cooking cup, a dry grinding cup, a shredding and slicing knife, and a meat grinder cup. An electric motor is fixedly connected to the inside of the device body. The lower side of the device body is fixedly connected with a triangular plug, the upper part of the conditioning cup is movably connected with a conditioning cup cover, the lower part of the conditioning cup is closely connected with a conditioning knife seat, and the upper part of the dry grinding cup is movably connected with a dry grinding cup. A cup cover, the bottom of the dry grinding cup is tightly connected with a dry sharpening seat, the top of the stirring cup and the upper part of the stirring cup cover are tightly connected with a measuring cup, the inside of the device body is fixedly connected with a motor, the The lower part of the motor is closely connected with a motor cover, and the upper part of the motor is movable with a motor heat insulation ring. The device is easy and fast to operate, novel in design, safe and practical, and is suitable for popularization and use in various families, restaurants and hotels.

The invention relates a degradation method for halogenated disinfection by-products and relates to a method for degrading halogenated disinfection by-products. The degradation method solves the problems of high operation cost, undesirable removal effect, secondary pollution and inconvenience for use of the conventional method for degrading the halogenated disinfection by-products in water. The degradation method comprises: regulating the pH value of water to over 7; controlling the dissolved oxygen concentration in water to be less than 2mg / L; and irradiating by using ultraviolet light with awavelength of 150 to 260 nanometers. In the degradation method provided by the method, expensive oxidizer and catalyst are not needed, secondary pollution is avoided, post treatment is not needed, and the mouthfeel of water is hardly changed; the halogenated disinfection by-products can be removed quickly, and the reactor can be designed conveniently; the use and management are convenient; and the method can be applied to effluent of urban water supply treatment plants and underground water and waste water treatment plants, industrial water and domestic water to remove the halogenated disinfection by-products in water effectively and ensure the safety of water.

The invention relates to a lithium-ion storage battery pack power supply and communication automatic switching method, which adopts a control system circuit composed of an anti-backflow circuit, an output switching control circuit, a charge switching control circuit, a switching detection and control circuit, a lithium-ion battery pack protection circuit, a power supply circuit, an electricity meter, a switching circuit of the electricity meter, and a electricity meter circuit, wherein the electricity meter is used for communicating with an external charger, the electricity meter circuit is used for communicating with a host computer. The control circuit adopted by the method integrates a battery protection function, an electricity meter function, a power supply switching function, a communication switching function and the like, is high in integration degree, has good compatibility, occupies small space, and can realize overcurrent protection, short-circuit protection, low-voltage protection and overcharge protection of the battery pack. The lithium-ion storage battery pack power supply and communication automatic switching method ensures that a system supplies power to electrical equipment in an uninterrupted manner, ensures the safety of circuit automatic control in the absence of external power supply equipment; and the circuit design is safe and reliable, the power consumption is small, the efficiency is high, the cost is low and the application effect is very significant.

The invention relates to a temperature detecting circuit for an IGBT module. The temperature detecting circuit for the IGBT module comprise a thermistor Rt, a chip U1 for converting an analog quantityinto an pulse quantity, and an FPGA, wherein the thermistor Rt is installed inside the IGBT module; the chip U1 for converting the analog quantity into the pulse quantity is connected with the thermistor Rt and used for converting an analog quantity of resistance change of the thermistor Rt into a digital quantity of a pulse width change; and the FPGA is connected with the chip U1 for convertingthe analog quantity into the pulse quantity, and the FPGA is used for detecting a pulse width or a duty ratio, calculating an NTC resistance value, and reading an corresponding IGBT module junction temperature through a look-up table method. Compared with the prior art, the temperature detecting circuit for the IGBT module has the advantages of having good linearity, high precision, and safety isolation.

The invention discloses a tritium trap device used for removing tritium in helium-3 gas, and a tritium-removing method. The tritium trap device comprises an outer housing, an inner housing positioned inside the outer housing, a gas inlet pipe with a gas outlet port positioned in a lower part inside the inner housing, a heating chamber fixed inside the inner housing, a titanium sponge arranged above the gas outlet port of the gas inlet pipe and filled between the heating chamber and the inner housing, an expansion reserved space arranged inside the inner housing and positioned above the titanium sponge, and a gas outlet pipe with a gas inlet port positioned in the expansion reserved space. The invention also comprises a method for removing tritium with the tritium trap device. The device is suitable for removing tritium in a high-temperature high-pressure helium-3 loop, and has the advantages of reliable performance and compact structure. Also, with the device, heat loss and tritium permeation amount can be reduced. The device and the method have important significance in ensuring the safety and successful running of a power sharp-increase test.

The invention relates to a hypnotic eye shield device which belongs to the technical field of living, medical treatment and health care, and consists of an eye shield structure device and a circuit device. The eye shield structure device consists of opaque eyeglasses or an eyeglass combination, an eye shield frame, a circuit box and an eye shield blocking border or a covering belt. The circuit device consists of a battery power supply, a switching circuit, a keyboard circuit and a pulse signal generating, logical controlling and optical pulse signal output circuit. Automatic slowing down of flash frequency of a red illumination diode for inducing hypnosis is adopted by the hypnotic eye shield device, and the device can be used in medical units or ordinary families for providing auxiliary treatment and physiological regulation of insomniacs.