FPGA signal processing FPGA features high speed, integration, high reliability, flexible design, etc. It can meet the requirements of air spring control module to process multiple input signals simultaneously and respond to signal changes in time. In the FPGA, the detected signal is subjected to sequential logic programming processing, and the exhaust and inflating level signals of the exhaust and inflation relays are controlled.
The relay uses solid state relays to control the on and off of the valve. The SSR is a non-contact switching device consisting of solid-state components. It is internally isolated by an optocoupler to achieve electrical isolation between the input and output. It can be controlled with low voltage and low current. Heavy load.
The opening and closing of the exhaust valve is controlled by the level of the exhaust level signal (1, 0), wherein the varistor and the fuse are added at the output end to prevent the overvoltage or load short circuit from causing a large voltage to burn the relay. When EL is low, the relay does not input the control voltage, and the output is turned off; otherwise, the relay output is turned on, the exhaust valve is opened, and the air spring is exhausted.
Valve control logic armored thermocouple air spring charge, exhaust state and the relationship between the charge and exhaust relay is generated by wire connection, the next is the correspondence between them: the relationship between the air spring state and the relay relay Air Spring Exhaust Relay 1 Exhaust Relay 2 Inflator Relay Exhaust Inflator Note: Where @ indicates that this column value is not possible in the actual situation.
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According to the operating state of the maglev train and the internal pressure value of the air spring, the air spring valve is controlled in time and accurately, and the air spring stiffness is adjusted in time to meet the requirements of the control system. The results of the system are experimental. In the figure, HEB_R_LF, OK_MRK_NS, OK_MRKvN_D, LF_PTEIL_D, LF_PMIN_D, and HEB are signals input to the FPGA; EL and BL are exhaust level signals and inflated level signals respectively outputted by the FPGA calculation processing.
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OTIS Moving Walkways 606 NCT |
| The sheer number of passengers a commercial Trav-O-Lator® carries, demands that safety has to be the overiding concern. In this respect the Otis 606 NCT's performance is unsurpassed. By way of example, tapered deflectors prevent objects from entering the handrail entry box (a design unique to OTIS). Trolleys can be transported in safety. And the balustrade, with an ideal 1000 mm height at landings, is constructed of 10 mm thick safety glass. |
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