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Vector releases tool to test ADAS sensor functions

Mon, Oct 18, 2021

Version 6 of DYNA4, the tool for virtual test driving has been released by Vector. DYNA4 R6 expands the possibilities for testing ADAS functions with improvements in the environment sensor models and the visualisation of scenarios. There are also new functions of the simulation standards ASAM OSI for sensor data communication and the road network ASAM OpenDrive.

The release’s DYNA4, the simulation environment for virtual test driving, has enhanced 3D visualisation and camera image generation to address real-time, close-to-reality modelling of the environment. The simulation facilitates the consistent use of physical lighting parameters in driving scenarios. This enables developers to test camera-based control systems in challenging lighting situations such as backlighting or strongly varying light intensities. Camera images are generated with a high dynamic range (HDR) and can then be arranged as Bayer matrix. DYNA4 additionally provides ASAM OSI ground truth information. The object information detected through image processing can be directly validated based on this information. The same applies to other sensor technologies, such as lidar, ultrasound or radar.

DYNA4 is based on simulation standards and includes a variety of interfaces to maximise the possibilities when using the virtual test drives in an existing tool infrastructure. Based on the use of the ASAM OSI standard in DYNA4, object-based sensors can transmit information as OSI messages. Other applications receive these data to process them. For example, CANoe, where the data is used for remaining bus simulation in HIL mode and displayed in the scene window. ASAM OSI considerably reduces the effort required to set up and maintain the interfaces between the simulation and the sensors or engine control units (ECU) functions

Through optimisation of the model structure, version 6 is more user-friendly in the consistent use from MIL, SIL to HIL, says Vector. The company has also worked to make it easier to integrate controller components into the virtual test vehicle. Different variants and development versions of a controller component can be exchanged with each other while the model interface remains constant, without the need for any further model changes. Furthermore, flexible access to signal and control variables in the model has been simplified allowing the user to manipulate them dynamically during a test run.

http://www.vector.com

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CC stepper motor driver IC does not need external sense resistor

Fri, Oct 15, 2021

Stepping motor driver ICs from Toshiba Electronics Europe now include the B67S539FTG. Housed in a 5.0 x 5.0mm QFN32 package, it operates without an external sense resistor and is integrated in the Stepper 17 Click board from Mikroe.

The TB67S539FTG is intended for a range of constant current (CC) control stepper motor applications including those found in office automation, commercial and industrial equipment. It can also be used in surveillance cameras and projectors.

The IC is based on Toshiba’s latest BiCD process and can drive bipolar stepping motors up to 40V and up to 2.0A. The integrated H-bridge circuit for motor control uses an Nch/Nch configuration and has a built-in charge pump circuit for output stage control.

The current detector is integrated within the QFN32 package, removing the need for an external current sense resistor. A capacitor for the charge pump is also integrated. The level of integration reduces the required PCB space significantly, says Toshiba.

The output stage (covering the upper and lower transistor) has an RDS(on) of just 0.8 Ohm. This ensures efficient operation and reduces heat generation during use. In sleep mode, the device draws a maximum current of 1.0 microA.

The IC is in mass production and shipping now. The compact Stepper 17 Click add-on board, created in partnership with Mikroe, is supported by a mikroSDK-compliant library.

Toshiba Electronics Europe is the European electronic components business of Toshiba Electronic Devices and Storage. TEE offers European consumers and businesses a variety of innovative hard disk drive (HDD) products and semiconductors for automotive, industrial, IoT, motion control, telecomms, networking, consumer and white goods applications. The company’s portfolio encompasses power semiconductors and other discrete devices ranging from diodes to logic ICs, optical semiconductors as well as microcontrollers and application specific standard products (ASSPs).

TEE has headquarters in Düsseldorf, Germany, with branch offices in France, Italy, Spain, Sweden and the United Kingdom providing marketing, sales and logistics services.

http://www.toshiba.semicon-storage.com

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V2X hardware security module is based on tamper-proof microcontroller

Tue, Oct 12, 2021

Trends such as electrification, autonomous driving and connected cars are leading to an increase in the number of communication interfaces in vehicles – wired or wireless. This presents new challenges because the numerous communication channels create new attack surfaces and increase the vulnerability of the systems, explains Infineon Technologies.

To provide the highest level of protection, it has launched the SLS37 V2X hardware security module (HSM) for vehicle to everything (V2X) communication. The SLS37 V2X HSM is based on a secured, tamper-resistant microcontroller tailored to the security needs in V2X applications within telematics control units. It protects the integrity and authenticity of messages, as well as the privacy of the sender. The HSM received the Common Criteria EAL4+ certification, which is expected to become mandatory in European V2X systems.

In a V2X host environment, the discrete HSM helps system integrators to solve the conflicting requirements of high performance and high security. The scope of the SLS37 V2X HSM is focused on high security tasks such as key storage and the generation of signatures for outgoing messages. This removes the burden of a Security Certification from the host processor, which runs the Linux OS (operating system), from the application software as well as the verification of incoming messages.

In addition to automotive telematics control units, the SLS37 V2X HSM can be used in roadside units or other infrastructure for V2X communication. It supports all major vehicle credential management systems including SCMS, CCMS and ESPS. It accepts a wide supply voltage range from 1.6 to 3.6V, comes with a high speed serial peripheral interface (SPI) with up to 10MHz and is qualified for harsh automotive applications according to AEC-Q100.

Infineon offers complementary host software package for immediate use. The personalisation concept leverages chip-unique and customer-individual certificates and keys to enable vendor verification, pairing and transport protection as well as secured-in-field-updates. As a discrete security controller, SLS37 also provides scalability for platform development covering different regions with different security-requirements, adds Infineon.

The SLS37 V2X HSM can be ordered now. .

http://www.infineon.com/SLS37-V2X

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75W high optical output laser diode supports long distances, says Rohm

Mon, Oct 11, 2021

Automated guided vehicles (AGVs) and service robots in industrial equipment can incorporate the LD90QZW3 for distance measurement and spatial recognition. The high optical output laser diode can also be used in lidar (light detection and ranging) systems in consumer products, such as robot vacuum cleaners, says Rohm.

As lidar becomes more commonly used, there is a need to improve the performance of laser diodes used as light sources to increase detection distance and accuracy while reducing power consumption. Rohm has patented technology to achieve narrower emission width, contributing to a longer range and higher accuracy in lidar applications.

The RLD90QZW3 75W infra red, high optical output laser diode is designed for lidar used in distance measurement and spatial recognition in 3D time of flight (ToF) systems. The company says its technology achieves an emission width of 225 micron at equivalent optical output. This is 22 per cent narrower than conventional products, says the company, to improve beam characteristics. Uniform emission intensity together with low temperature dependence of the laser wavelength ensure stable performance contribute to higher accuracy and longer distances in lidar applications. Power conversion efficiency (which is a trade-off between narrow emission width) of 21 per cent, which is the same as standard products at a forward current of 24A and 75W output, for use without increased power consumption.

Rohm also offers optical circuit simulation models and application notes on drive circuit design on its website to integrate and evaluate the diode.

The company introduced a 25W laser diode in 2019 for consumer electronics products and is working on developing higher output 120W laser diodes for the automotive sector (AEC-Q102 qualified).

The 75W diode is available now, via online distributors Digi-Key, Mouser and Farnell, initially, with other online distributors to be announced.

Rohm Semiconductor develops and manufactures a large product range from SiC diodes and MOSFETs, analogue ICs such as gate drivers and power management ICs (PMICs) to power transistors and diodes to passive components. Production is in manufacturing plants in Japan, Korea, Malaysia, Thailand, the Philippines, and China.

http://www.rohm.com/eu

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Vector releases tool to test ADAS sensor functions

CC stepper motor driver IC does not need external sense resistor

V2X hardware security module is based on tamper-proof microcontroller

75W high optical output laser diode supports long distances, says Rohm

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