4 results about "Regulated power supply" patented technology

The invention provides a river and lake pollution bottom mud in-situ quantity reduction pollution cleaning device based on pore water guide discharging. The device comprises a direct current voltage stabilizing power supply, a peristaltic pump and electric dewatering pollution cleaning electrodes, wherein the two electric dewatering pollution cleaning electrodes are in relatively parallel arrangement and are inserted into bottom mud; each electric dewatering pollution cleaning electrode comprises a water guide electrode plate, porous organic glass plates arranged at the two sides of the waterguide electrode plate, a filtering screen arranged at the outer side of the porous organic glass plate, and an upper water covering isolation cover covering the water guide electrode plate; a verticalwater guide groove and a metal conducting wire connected with the direct current voltage stabilizing power supply are arranged on each water guide electrode plate; the bottom of each water guide electrode plate is provided with a pore water storage device communicating with the corresponding water guide groove; each pore water storage device is connected with a pore water outwards discharging guide pipe which is connected with the peristaltic pump. The lake pollution bottom mud in-situ quantity reduction pollution cleaning device has the advantages that the field work capability is high; thein-situ separation and removal effect of bottom mud pollutants is good; the power consumption is low; the operation cost is low; the maintenance is simple; no chemical agent pollution and no solid waste are generated; the influence on the river and lake demersal ecological environment is small.

The invention discloses a railway carriage watering measuring control system device and a method for metering and monitoring watering. The system comprises m numbered remote control units, n numbered sets of on-site hosts and one set of computer management systems, wherein n is an integer between 1 and 1000, and m is less than or equal to n; each set of on-site hosts comprises an electronic control system and a pipeline system, and the on-site host electronic control system comprises a monitoring center, a flow acquisition unit, a solenoid valve control unit, a data storage unit, a data transmission unit, a wireless data transmission unit, a state indication unit and a voltage-stabilizing power supply unit. The computer management system and each on-site host carry out on-site data transmission by a transmission path. The method for metering and monitoring watering utilizes the system of the invention and adopts remote control software, on-site host software and computer management system software, and a watering operator sends out a specified instruction for switching on or off of a watering plug by a remote control unit so as to realize the purposes of remotely controlling the switching on and off of the watering plug and automatically recording and accurately metering watering flow.

The invention discloses a single-phase electromagnetic deceleration type permanent magnet low-speed synchronous motor fast braking circuit. The circuit of the invention comprises a control circuit and a fast braking type driving circuit. The circuit of the invention specifically includes a voltage-stabilized power source module U0, a clock oscillator U5, a processor IC1, a left solid-state relay U1, a middle solid-state relay U2, a right solid-state relay U3, a diode D1, a resistor R1, a phase-splitting capacitor C1, a filtering capacitor C2, a single-phase electromagnetic deceleration type permanent magnet low-speed synchronous motor M and the like. According to the single-phase electromagnetic deceleration type permanent magnet low-speed synchronous motor fast braking circuit of the invention, in the mutual conversion and transition processes of parking, forward rotation and reverse rotation of the single-phase electromagnetic deceleration type permanent magnet low-speed synchronous motor, the diode and the alternating current solid-state relays are utilized to simultaneously apply half-wave rectifying voltage to windings of two phases so as to shorten parking and braking time, and therefore, positioning control performance of the single-phase electromagnetic deceleration type permanent magnet low-speed synchronous motor can be greatly improved. The single-phase electromagnetic deceleration type permanent magnet low-speed synchronous motor fast braking circuit of the invention has the advantages of being simple and reliable, and high cost performance, and is especially suitable for positioning control and reciprocating control of a small-power motion mechanism.