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1 Evaluation Module Overview
1.1 Introduction
Ultrasonic Lens Cleaning is a new way to clean lenses without any bulky components. ULC is highly effective
at clearing water or ice, and significantly improves visibility with contaminants such as mud or dirt. For strict
cleaning applications, ULC can pair with a water jet. Compared with a traditional water jet system, ULC
eliminates the need for a complimentary air jet system and reduces water consumption.
Texas Instruments created the Ultrasonic Lens Cleaning (ULC) system for removing water, ice, or other
contaminants from cover lenses in automotive and industrial systems. This technology uses a carefully
manufactured mechanical system comprised of a piezo transducer glued directly, or indirectly through a bracket,
to a lens (glass or other materials) that can be placed over the camera or in the camera stack. A glued
transducer and lens combination intended to cover a camera module is called a Lens Cover. The Lens Cover is
mounted inside a housing creating the Lens Cover System (LCS). For the purpose of this document, LCS refers
to a lens cover system as well as an integrated piezo-based lens cleaning system. The ULC1001-DRV2911 EVM
is the electrical system developed to drive the piezo element of the LCS causing expulsion of contaminants from
the lens through mechanical vibrations. This EVM is easily controlled via I
The schematic is shown in
Texas Instruments develops prototype mechanical systems and production ready electrical systems required
for Ultrasonic Lens Cleaning. Mechanical systems developed by other companies can also be driven with the
ULC1001-DRV2911 EVM. Texas Instruments' LCS is designed using specific parameters and components to
provide high reliability and excellent cleaning performance. For more mechanical details on the LCS, please
refer to the Mechanical Design Guides.
The ULC1001-DRV2911 EVM is a flexible system designed to eliminate design complexities for ultrasonic
lens cleaning applications. Through the GUI, users can quickly start developing and evaluating ultrasonic lens
cleaning applications. Alternatively, four programmable buttons on the EVM can be programmed to drive specific
cleaning modes using the on-board MSP430. The ULC1001-DRV2911 EVM contents are listed in
1.2 Kit Contents
The ULC1001-DRV2911 EVM is not outfitted with any additional hardware, but TI recommends to purchase
the
USB2ANY
for connecting the GUI to the computer. TI has open source design LCS prototypes that can
be purchased to fully evaluate the ultrasonic lens cleaning technology. When using different lens covers, one
importance to note is to consider and update the boost voltage and LC filter on the EVM. More information on TI
lens cover prototypes and details regarding the EVM updates to be made can be found in the Mechanical Design
Guides. Other lens cover systems can be tested using the ULC1001-DRV2911 EVM as well.
SLAU915 – MAY 2024
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Section
4.1.
Copyright © 2024 Texas Instruments Incorporated
Evaluation Module Overview
2
C using the available PC based GUI.
Section
ULC1001-DRV2911 Evaluation Module
1.2.
3
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