Austrian Microelectronics Company issued a reference design

The Austrian microelectronics company has issued a reference design to generate electric motorcycle power status (state of charge) readings through a simple circuit of current and voltage measurements.

The reference design uses the dual-channel battery-sensing interface AS8510 sensor of the Austrian microelectronics and a simple 8-bit microcontroller, a low-voltage drop-voltage regulator (LDO) and an LED driver for driving the LED cross bar diagram. The cost of these components is about € 3 (USD 3.7).

Using this design, electric motorcycle manufacturers can use the power indicator table to replace the more coarse voltmeter, just add a little material cost (BOM), can bring motorcycle users more convenient and practical driving experience.

Electric motorcycles are cheap, easy to use and the characteristics of zero emissions, making it increasingly popular vehicles. It is usually powered by four series 12V lead-acid batteries. But its voltmeter does not really show the power of motorcycles, because the output voltage of the battery and the state of the power depends largely on the change in the load of the battery.

Austrian microelectronics released the new electric motorcycle Electricity meter Reference design successfully satisfied the manufacturer's requirements for cost, while providing full charge/discharge cycle and battery operating temperature range of accurate voltage and current readings. This is because the circuit uses the AS8510 sensor interface, which integrates data capture and data conversion functions and achieves almost unbiased current and voltage measurements within a wide range of dynamic ranges.

The circuit design of Austrian microelectronics can simultaneously measure the current and voltage of four batteries at a high sampling rate. The demonstration software in the 8-bit microcontroller converts the open-circuit voltage measurement and the Coulomb metering to the power state readings. The reference design supports a simple LED cross bar display and can also be used to drive more expensive LCD displays, providing users with more accurate power status information. The software developed by the Austrian microelectronics is provided free of charge to demonstrate that the power meter can be successfully applied in reference hardware design and to show how accurate voltage and current measurements produce a valid power status reading.

Bernd Gessner, vice president and general manager of the Austrian microelectronics automotive business, said: "The innovative design of Austrian microelectronics enables electric motorcycle manufacturers to add more value to their products while optimizing costs." With the AS8510 gauge, motorcycle users who use cheap batteries can also see how much power is left and how far they can ride before recharging it once again. 」

Austrian microelectronics customers are free to obtain the reference design.