ON-BOARD HARDWARE-SOFTWARE SYSTEM FOR DETERMINING CARGO WEIGHT AND LOAD ON THE AXIS OF CARGO VEHICLES Russian patent published in 2019 - IPC G01G19/12 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measurement equipment, in particular to weight measuring devices, and can be used for cargo weighing directly on vehicle chassis, for example, in a truck body, as well as for determining load on each axis of a cargo vehicle. On-board hardware and software system for determining weight and load on the axis of cargo vehicles comprises measuring sensors, a data processing module, monitor in cabin with output to CAN terminal equipment unit with possibility of data transmission to remote monitors and devices using CAN, RS232 and RS485 interfaces. Measuring transducers are a set of strings, strain gauges and pneumatic sensors. String sensor consists of a hollow metal rod, inside which a string is located, and on the rod there is an electronic module, which contains a controller for data processing, a transformer coil, an analogue-to-digital converter (ADC), digital-to-analogue converter (DAC), signal amplifiers, NTC thermistor, CAN bus driver, NFC / RFID identification mark, rod is attached to vehicle axis. Strain gauge of the foil type is a Wheatson bridge circuit of four strain gauges glued directly to the side surface of the vehicle axis and having an inclination to the horizon line of 45 degrees, it comprises an electronic processing module integrated with the sensor and having a CAN interface. Pneumatic pressure sensors are installed in individual pneumatic circuits of each axis of semitrailer or trailer, and are equipped with electronic modules for data processing and outputs to CAN interfaces.

EFFECT: technical result from use of disclosed invention consists in improvement of weighing system reliability and reduction of measurement error of current weight to values at level of 1–3 % (net, gross, load on each axis), as well as in the possibility of using a weighing system on all types of suspension of vehicles (pneumatic, hydraulic, mechanical, mixed) with number of axles of vehicle to 8 (tractor train), wherein processing time and indication of current readings are reduced to values at the level of not more than 5 seconds while reducing the cost of the device.

11 cl, 11 dwg