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Septentrio GPS/GNSS boards and modules support PX4 Autopilot for UAVs

Mon, Jun 27, 2022

GNSS boards and modules from Septentrio now support PX4 Autopilot for faster integration of positioning into unmanned aerial vehicles (UAVs) and robots.

The single and dual antenna AsteRx-m3 and mosaic receivers with PX4 Autopilot enable real time kinematic (RTK) positioning for UAVs. PX4 Autopilot is one of the largest commercially adopted open source navigation control stacks. It is typically used to build and maintain drone hardware and software in a scalable way. Drones and robots can now implement Septentrio’s positioning receivers known to be secure against GPS jamming and spoofing with built-in AIM+ (Advanced Interference Mitigation technology.

“Our developer community is looking forward to integrating Septentrio’s secure GNSS positioning technology into UAVs and robots, especially in those applications where reliability matters from mapping to surveillance and delivery,” commented Ramon Roche, general manager, Dronecode Foundation.

The collaboration with Dronecode is important “because it brings resilient and secure GPS technology to the UAV industry, with tremendous potential in terms of assured positioning and improved safety,” said Gustavo Lopez, market access manager at Septentrio.

PX4 is supported by Septentrio’s GNSS boards and modules with both single antenna and dual antenna configurations, which offer either heading and pitch or heading and roll angles on top of accurate GNSS positioning.

The Septentrio PX4 driver is available on the GitHub.

Dronecode is a vendor-neutral foundation for open source drone projects. It is a US-based non-profit under the Linux Foundation and provides open source governance, infrastructure, and services to software and hardware projects. Dronecode works with developers, end-users, and adopting vendors from around the world.

Septentrio is an ISO 9001-certified manufacturer of multi-frequency multi-constellation GPS / GNSS positioning technology for demanding applications. Reliable centimetre-level positioning enables machine automation improving efficiency and safety. Septentrio provides positioning for industrial applications such as robotics, construction, survey and mapping, maritime, logistics and UAVs.

Septentrio has its headquarters in Leuven, Belgium and offices in Los Angeles, Shanghai, Seoul and Yokohama as well as partners around the world.

http://www.septentrio.com

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ANS-8A64 server protects data centres to IPSec

Mon, Jun 27, 2022

The ANS-8A64 server series is based on an Intel Atom C3000 processor, which qualifies it for network acceleration system for software defined wide area network (SD-WAN) users, said Portwell.

SD-WAN is used to connect a wide range of corporate networks, data centres, internet applications and cloud services, which aims to help reduce a WAN’s operating cost and improve connection flexibility, explained Portwell. More and more applications will depend on the cloud to process data, which also brings the escalating demands for network security as this data on the cloud may contain personal ID, credit card numbers and other private information.

IPSec protocol works in the third layer of the OSI (open systems interconnection) model and supports two modes, host-to-host mode and tunnel mode, either of which can be used to build a virtual private network (VPN) to increase the security of network transmission.

The Intel Atom C3000 processor series features industry-leading performance per watt, claimed Portwell, with low thermal design power (TDP) and configurable high-speed I/O, making it suitable for networks, storage devices, IoT and scalable designs. It is also equipped with Intel QuickAssist Technology (Intel QAT). The Intel QAT engine means IPSec protocol operation, data encryption, decryption and compression can be handled independently. It saves the CPU resource for other critical workloads and eventually optimises the overall work efficiency and performance, said Portwell.

During field tests of the data plane development kit (DPDK) and Intel QAT, the ANS-8A64 was used as IPSec gateways and the encryption and decryption performance was repeatedly tested.

In a one-way test, packets are sent unidirectionally from server port1 to server port2, and encryption and decryption are performed by IPSec gateway1 and IPSec gateway2.

A two-way test, consists of the server port1 and server port2 sending packets at the same time, and encrypting and decrypting packets through IPSec gateway1 and IPSec gateway2.

Portwell reported that the hardware acceleration engine, Intel QAT offers a “significant system optimisation and effectively betters the overall performance in both one-way and two-way testing”.

Portwell is an Associate member of the Intel Internet of Things Solutions Alliance, designs and manufactures a full range of IPC products (SBC, backplane, redundant power supply, rack mount and node chassis), embedded architecture solutions, DVR system platforms and communications appliances. It provides R&D and project management services to decrease customers’ time to market and reduce project risk and cost. Portwell is also an ISO 13485, ISO 9001 and ISO 14001 -certified company that deploys quality assurance through product design, verification and manufacturing cycles.

http://www.portwell.eu

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Rohm introduces small ICs for camera modules

Fri, Jun 24, 2022

Rohm has launched its BD868xxMUF-C (BD868C0MUF-C, BD868D0MUF-C) PMICs for automotive camera modules. The models are ISO 26262 and ASIL-B compliant.

In 2018, Rohm achieved ISO 26262 Development Process certification from German certification body TÜV Rheinland, and in 2021 launched the brand ComfySIL. As part of the ComfySIL series, these ICs are ‘FS (functional safety) process compliant’ products (the highest grade), indicating compliance with the ISO 26262 standard.

Meeting the strict requirements for functional safety allows these products to facilitate safety design in next-generation vehicles equipped with advanced driver assistance systems (ADAS). Moreover, the four power supply systems (three DC/DC + 1 LDO) necessary for automotive cameras are integrated into a 3.5 x 3.5mm package, and achieve what Rohm claimed is the industry’s smallest size in comparable camera power management ICs.

They are equipped with an anomaly status notification mechanism such as abnormal voltage detection and feedback via I2C. This reduces the number of components by three compared to former devices, which results in a 25 per cent smaller mounting area compared to conventional designs and contributes to smaller vehicle cameras, claimed the company. It said that further miniaturisation is possible.

A wide range of output voltage and sequence control settings can be configured to meet the varying requirements of CMOS image sensors from different manufacturers, which simplifies development.

In addition to the four models (BD868A0MUF-C, BD868B0MUF-C, BD868C0MUF-C and BD868D0MUF-C) that comply with both ISO 26262 and ASIL-B, the lineup will also include the non-ISO 26262-compliant BD868C1MUF-C for users that do not require ASIL compliance. Rohm can also offer products based on customer setup requirements such as output voltages, voltage tolerances, sequencing and functional safety requirements.

Derivative models (BD868A0MUF-C, BD868B0MUF-C and BD868C1MUF-C) are scheduled to be released in succession.

Applications for the models include rear view / perimeter cameras, drive recorders and driver monitoring systems.

Rohm launched the ComfySIL brand for customers involved in the design of functional safety to use products that support SIL (Safety Integrity Level) in a ‘Comfy’ (comfortable) manner, and for social systems’ greater safety, security, and convenience. ComfySIL is awarded to products that conform to the ComfySIL concept for functional safety in the industrial equipment and automotive markets.

Rohm Semiconductor develops and manufactures a product range from SiC diodes and MOSFETs, analogue ICs such as gate drivers and power management ICs to power transistors and diodes to passive components.

https://www.rohm.com

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Synthesiser enables performance in GSPS data converter solutions

Fri, Jun 24, 2022

Analog Devices (ADI) has introduced an 800MHz to 12.8GHz synthesiser for high performance wideband data converter and synchronisation applications.

The ADF4377 synthesiser offers signal-to-noise performance by providing a clean clock source to drive the signal sampling process. This allows next generation wideband receivers and transmitters to utilise higher levels of dynamic range, which leads to greater receiver sensitivity and transmitter spectral purity.

The performance is achieved by the ADF4377 synthesiser, which delivers jitter levels below 18fs rms because of the low normalised in-band phase noise at -239dBc/Hz, -147dBc/Hz normalised 1/f noise and a wideband voltage control oscillator (VCO) noise floor of -160dBc/Hz.

The ADF4377 synthesiser is suitable for applications such as radar, instrumentation, and wideband receivers requiring multiple data converters or mixed-signal front end (MxFE) digitisers that operate together. ADI claimed it simplifies the alignment and calibration routines by allowing groups of data converters to sample their signals in precise alignment with each other. This is fundamental to the operation of next generation wideband multi-channel systems and is achieved by implementing automatic reference to output synchronisation, well-matched reference to output delays across process (3ps part to part), voltage, and temperature (0.03ps/ degree C) and sub-ps, jitter- free reference to output delay adjustment capability (+/- 0.1ps).

These features allow precise multi-chip clock and SYSREF alignment. JESD204B and JESD204C subclass 1 solutions are supported by pairing the ADF4377 synthesiser with an IC that distributes pairs of reference and SYSREF signals. The ADF4377 integrates all necessary power supply bypass capacitors, saving board space on compact boards.

The ADF377 operates an output frequency range of 800MHz to 12.8GHz, jitter is 18fs rms (Integration bandwidth: 100Hz to 100MHz) and it has a wideband noise floor of -160dBc/Hz at 12GHz.

The PLL specifications are: -239dBc/Hz: normalised in-band phase noise floor; -147dBc/Hz: normalised in-band 1/f noise; and phase detector frequency up to 500MHz.

Output delay specifications are: part-to-part standard deviation of 3ps; temperature drift of 0.03ps/ degrees C; and multi-chip output phase alignment.

ADI offers analogue and mixed signal, power management, radio frequency (RF), and digital and sensor technologies. It serves 125,000 customers worldwide with more than 75,000 products in the industrial, communications, automotive and consumer markets. ADI is headquartered in Wilmington, Massachusetts, USA.

https://www.analog.com

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Septentrio GPS/GNSS boards and modules support PX4 Autopilot for UAVs

ANS-8A64 server protects data centres to IPSec

Rohm introduces small ICs for camera modules

Synthesiser enables performance in GSPS data converter solutions

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