[Diy_efi] WB Lambda Meter

[Programmer]

I'm interested in doing some testing...is the sampling time stamped, or...

Lyndon

----- Original Message -----
From: "Klaus Allmendinger" <klaus at innovate-tech.com>
To: <diy_efi at diy-efi.org>
Sent: Thursday, November 14, 2002 4:23 PM
Subject: [Diy_efi] WB Lambda Meter


> Hi everybody,
>
> My company is currently developing a new wide-band Lambda Meter based on
> the NTK and Bosch Sensors using a new measurement principle. This
principle
> uses proprietary algorithms for calculating Lambda from the sensor data
> without resorting to calibration resistors and such. I want to use this
> forum to see what the interrest level in this community is for such a
> device. Here are the target specs:
>
> 1. Precise heater control (Htr resistance controlled to +- 10 milliOhm).
>
> 2. Fast, temperature gradient controlled light-off time ( < 20sec)
> depending on sensor.
>
> 3. 32-character LCD display for AFR, Lambda and Lambda bar-graph.
>
> 4. Automatic error detection and display for sensor and connection faults.
>
> 5. Digital Signal Processing for Lambda Signal sampled and processed at
> 128 times Sensor response speed. Overswing compensated and controlled
using
> digital filtering algorithms.
>
> 6. Self compensating for exhaust temperature, pressure (within resonable
> limits) and (within reason) sensor aging. Target error < 0.5% lambda.
>
> 6. Self calibrating in operation.
>
> 7. Linear Lambda output as voltage in addition to display. Programmable
> Lambda/Volt ratio to fit user's remote analog lambda display.
>
> 8. Simulated HEGO output with programmable switchpoint.
>
> 9. Inputs for up to 5 additional analog sensor signals (like TPS, MAP/MAF,
> CT ...)
>
> 10. Stores up to 1 hr of sensor data (for all sensor inputs + lambda
> concurrently) internally in non-volatile memory (when sensors are sampled
> at 100ms). If less sensors are used the sampling time decreases
> proportionally.
>
> 12. Serial Port for programming and data download. Downloaded data
> formatted into Excel compatible file and time-stamped (Windows download
> software included).
>
> 13. Small hand-held device.
>
> 14. Price target < $300.- including sensor.
>
> A cheaper module is also planned that does not include storage and LCD
> display but allows the user to program the HEGO output depending on other
> sensor data using downloadable maps.
>
>
> Regards,
> Klaus
>
>
>
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