Reference design provides hardware blueprint for battery fuel-gauging in electric scooters
July 30, 2012 // Paul Buckley
The company, ams has developed a reference design which shows how a simple current and voltage measurement circuit can produce state of charge (SOC) readings for electric scooter batteries.
By implementing the design, electric scooter manufacturers can replace todays crude voltmeter displays with a fuel gauge, thus making the vehicle more useful and convenient to the rider while adding little to its bill of materials.
Electric scooters, normally powered by four series-connected 12V lead-acid batteries, are an increasingly popular choice of transport because they are cheap to buy and run, and emit no exhaust fumes. But the voltmeter dials provided in them offer a poor indication of the scooters range, since the output voltage at the batteries has a non-linear relationship with SOC, and varies markedly depending on the load on the batteries.
The new e-scooter fuel-gauging reference design from ams succeeds in meeting the tight cost requirements of electric scooter manufacturers while delivering accurate voltage and current readings across the charge/discharge cycle and across the batterys operating temperature range. This is due in large part to the circuits use of the AS8510 sensor interface, which integrates data acquisition and data conversion in a single chip, and which produces virtually offset-free current and voltage measurements across a wide, dynamic range.All news
Conspiracy alleged over Rousset wafer fab closure
March 07, 2014
A class action lawsuit has been filed in Federal Court in New York alleging that Atmel Corp. (San Jose, Calif.) conspired ...
Europe loses PV market lead to Asia in 2013
Driverless car sharing concept focuses on digital comfort
Automated SSL test system authenticates LED technology performance
Paper-thin ultracapacitor aims to boost Li-ion battery performance
Apple set to transform sapphire wafer market
March 07, 2014
The sapphire industry ended an 18 month period of depressed pricing and achieved $936 million in revenue for wafer products ...
FTDI reveals streaming instruction behind new 32bit architecture
AMD taps UK tool for video verification
UHF RFID the radio technology of choice for Industry 4.0
- DSM presents: Select the best plastic for DDR4
- Wireless Sensor Network Challenges and Solutions
- Putting FPGAs to Work in Software Radio Systems Handbook
- Real-Time Spectrum Analysis for Troubleshooting 802.11n/ac WLAN Devices
InterviewWi-Fi is open for business, which is good news for mobile subscribers
Following the news that Netgear has built a Facebook-linked amenity Wi-Fi option into its routers, enabling businesses to offer free Wi-Fi in return for liking the company Facebook page, David Nowicki, ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Freescale is giving away ten RIoTboards, worth 74 dollars each, for EETimes Europe's readers to win.
Designed to run Android operating systems efficiently or to run under Linux, the board is based on the Freescale i.MX 6Solo processor; using the ARM Cortex-A9 architecture.
And the winner is...
In our previous reader offer, Crystal Display was giving...Read more
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.