5results about How to "Reduce system size" patented technology

The utility model belongs to water quality purification technical field provides a kind of purification device, circulating water aquaculture water quality purification system, the device includes by first filter bag, second filter bag and third filter bag that inner layer nest together outward, water flow gap is provided between adjacent filter bag;Water hole is opened on first filter bag, second filter bag and third filter bag, water source entering purification device forms axial-radial-axial flow path in water flow gap by water hole, finally reaches the water purification effect of denitrification and filtration.This purification device can filter organic particulate matter in water source and the whole process device stability is high;And have filtration function and adsorb particulate function;Based on the assembly of purification device, the water oxygen content gradient of the present purification system can be reduced to anaerobic state, thereby causing short-range nitrification reaction to remove nitrogen from water body;And the system has the characteristics of low energy consumption, good purification effect and compact system, thereby reducing the total investment cost.

The application discloses a novel electric buffering circuit for an electric motorcycle, which is connected in series between a battery pack and a motor controller, and comprises a high-temperature fuse resistor assembly, a controlled switch, a detection circuit and a processing circuit. The high-temperature fuse resistor assembly is composed of a high-power wire-wound resistor and a constant-temperature thermal fuse, and the controlled switch is connected in parallel with the high-temperature fuse resistor assembly. The processing circuit disconnects the controlled switch to perform current-limiting pre-charging when the circuit is initially powered on. When an abnormal signal is monitored, the controlled switch is disconnected and a preset time window is started to verify the anti-mis-triggering. If the abnormality disappears within the window, it is determined to be a transient disturbance and the switch is re-closed. If the abnormality persists, the switch is locked off, and the high-temperature fuse resistor assembly is irreversibly fused by actively using a large fault current. The application effectively filters out transient disturbances under complex road conditions, avoids unexpected vehicle breakdown, and realizes absolute safe physical-level electrical isolation at low cost in the case of hard failure.

This invention relates to the field of motion detection technology, and discloses a primary motion detector based on a PN junction channel, its fabrication method, and a sensor. The primary motion detector includes a first phototransistor and a second phototransistor. The first phototransistor is configured to operate under a source-drain forward bias, and its photocurrent decay process during turn-off has a first fast decay time constant and a first slow decay time constant. The second phototransistor is configured to operate under a source-drain reverse bias, and its photocurrent during turn-off has a second fast decay time constant and a second slow decay time constant, wherein the first fast decay time constant is greater than the second fast decay time constant. When a light pulse moves along the direction from the first phototransistor to the second phototransistor, a directional current pulse can be detected at the output of the primary motion detector. This invention achieves high-efficiency and low-power discrimination of the direction of light signals.

The application discloses a compact and easy-to-control shallow sea buoy hydraulic system and a working method thereof. The system comprises a telescopic rod, a piston, an inner oil tank, a first one-way valve, a second one-way valve, a gear pump motor set, a normally closed two-position two-way reversing valve and an outer oil bag. The piston is arranged in the inner oil tank and connected with the telescopic end of the telescopic rod, and is driven by the telescopic rod to make linear motion in the inner oil tank. The inner oil tank is provided with two oil ports, one of which is connected to the outer oil bag through the first one-way valve, and the other is connected to the oil outlet of the gear pump motor set through the second one-way valve. The oil inlet of the gear pump motor set is connected with one port of the normally closed two-position two-way electromagnetic reversing valve, and the other port of the normally closed two-position two-way electromagnetic reversing valve is connected with the outer oil bag. The system structure is compact, only one electromagnetic reversing valve and two one-way valves are used in the use of the valve, and the number of elements and the system volume are significantly reduced.

The invention provides a low-power-consumption infrared detector system and a working method, and solves the technical problems that an existing infrared detector is large in size and high in power consumption, and long-time stable communication of a laser communication system is restricted. The PCB circuit board comprises a first PCB circuit board and a second PCB circuit board. The top of the first PCB is provided with an infrared detector chip, the bottom of the first PCB is connected with the top of the second PCB through an internal connector, the bottom of the second PCB is provided with an external high-speed connector, and the external high-speed connector is used for transmitting infrared image data to the main control processor. The method can be widely applied to the technical field of laser communication.