/ NEW
RUBRIC MATERIALS PREPARED / ALEXEI SPARROW-SHOES, MAXIM SASKOV
NIZHNY NOVGOROD MULTIPLEX
NUMBER OF WIRES IN THE CAR
REDUCED SEVERAL TIMES
Specialists of the Nizhny Novgorod Research Institute of Measuring Systems (NIIIS) and the Zelenograd company "Spurt" have developed a multiplex network for domestic cars. Only two wires can replace thick plaits! Similar systems already exist on many foreign cars (ЗР, 1999, No. 9), and the Volga from Nizhny only tries on a novelty.
The central control unit settled on a shelf under the glove compartment. He commands nearby devices (washer and wiper motors, dashboard lights, starter relays) and
seven executive modules. Four of them are located in the doors and dispose of electric windows, mirrors, locks. The rest - under the hood and in the trunk. They are busy with lighting, sound signals, rear window heating, etc. Unfortunately, this system does not control the engine yet, but in the future, the developers promise to teach it and that.
A power wire and an information bus are laid from the central unit to the executive modules, through which the boxes communicate with each other. There are many devices, but one bus. Each device responds only to its own, strictly defined signal. The driver, by clicking a key or a toggle switch, does not directly turn on the desired device, but first sends a command to the central unit, which transmits the order to one of the executive modules. After processing the signal, it turns on the corresponding device, sensor, light bulb. Feedback is also provided. If the device
to which the signal is addressed, it is faulty, the central unit will immediately display information on the display.
The system has an automatic mode of substitution. If, say, a marker light fails on the road, then the computer shifts its responsibilities to the “turn signal”. And instead of a burned out brake light, a fog lamp can temporarily work.
