Industrial Raspberry Pi

Raspberry Pi as a platform

Raspberry Pi is a single-board computer launched in 2012 by the British Raspberry Pi Foundation. We are proud of the overwhelming number of units shipped worldwide, totaling over 46 million units. Although it has an image of being used for education or hobby purposes, it is actually widely used in manufacturing sites and other industrial applications. Commercial use is also increasing, and the number of PLC shipments is surpassing that of domestic PLCs.

Raspberry Pi features ARM-based hardware with overwhelming cost performance, open source Linux OS (Raspberry Pi OS), and the availability of various open source software that can run on Linux. In the research and development departments of universities and companies, open source software such as OpenCV (image processing), Scipy (scientific computing), Tensorflow (machine learning), and ROS (robot control) are used as main tools for front-line engineering research. However, the same tools and programs developed with them can be run directly on the Raspberry Pi. The fact that valuable technical information from Raspberry Pi users around the world is disseminated daily on the Internet is one of the reasons why Raspberry Pi is unrivaled as an IoT platform that easily realizes cutting-edge engineering technology. Sho.

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Boy,And,His,Mentor,Working,On,A,Self,Made,Computer

The Python logo is a trademark of the Python Software Foundation / The Scipy logo is a trademark of Scipy org / “OpenCV” is a trademark of OpenCV / TensorFlow, the TensorFlow logo and related marks are trademarks of Google LLC / ROS (or “Nine Dots”) ” ROS logo, or other ROS trademarks) are trademarks of the Open Source Robotics Foundation

Compute Module 4

Compute Module with Industrial Raspberry Pi

What is an industrial Raspberry Pi?

A typical Raspberry Pi is a board computer with the board exposed as is, all data including the OS is stored on an SD card, and the 5V power supply is provided via a USB cable, a configuration that is not suitable for installation in the field. Commercially available Raspberry Pis are sometimes placed in the field, but in many cases they cannot be used for continuous operation because they shut down due to thermal runaway in environments such as factories. Commercially available Raspberry Pis are used for prototyping and development, but some customers have had issues such as concerns about data being lost or removed from the SD card, and the inability to meet requirements such as the operating temperature range.

The industrial Raspberry Pi is equipped with the Raspberry Pi Compute Module for embedding as the brain, and while ensuring compatibility with commercially available Raspberry Pi, it is also suitable for manufacturing sites such as reliability, environmental resistance, long-term operation, and certification of various industrial standards. This is an industrial grade product that meets the requirements of The processor and memory are the same as a regular Raspberry Pi, so any OS or software that runs on a commercially available Raspberry Pi can be used in the same way. There are waterproof and non-waterproof types, and the waterproof type can be installed without a control panel even in harsh environments, including outdoors. The OS is written to the onboard eMMC, so no SD card is required for booting. The power supply is 24V DC, has a wide operating temperature range of -20 to 60℃, vibration/shock resistance, noise resistance, and excellent heat dissipation characteristics, allowing stable and long-term continuous operation even when used at manufacturing sites.

内部構造

Structure inside the case [right: carrier board]

Structure of the industrial Raspberry Pi

The PiLink industrial Raspberry Pi has a unique structure that combines two boards inside the enclosure. The carry board on the right is the board with the embedded Raspberry Pi Compute Module 4 (CM4). It is designed for industrial use from the board up, with industrial-grade components in the peripheral chips.

Raspberry Pi Comparison Chart:
General Purpose vs. Industrial Purpose
Regular Raspberry Pi
(For learning and hobby)
Industrial Raspberry Pi
PL-R4
power supply DC5V DC12-24V
boot SD card Onboard eMMC
(SD card not used for booting)
Peripheral Chips Civilian use
0~+70℃
Industrial use
-40~+85℃
Operating temperature range 0~+50℃ -20~+60℃
Heat dissipation measures Separately Measures have been taken
Countermeasures taken Exposed circuit board Metal housing
M.2 slot Not installed Equipped with M.2 slot for expansion
RTC Not installed (fake) Equipped with hardware RTC
Watchdog Not installed (software) Equipped with hard WDT
NVRAM Not installed Equipped with NVRAM
Security chip Not installed Equipped with security chip
Setting method Separately available DIN Rail Mount
Wall Mount

Robust for Industrial Use

Computer equipment is expected to be installed and used under harsh conditions in on-site environments such as factories, indoors, and built-in equipment. The industrial Raspberry Pi is designed with industrial-grade components to withstand extreme temperature requirements and the effects of vibration, shock, and noise. It is characterized by a wide operating temperature range, excellent vibration and shock resistance, and EMC resistance.

Temperature Test

We conducted a cold boot test at -40℃ using a constant temperature bath and a temperature cycle test.

Operates at 100% CPU load in a high temperature environment of 90℃. Suitable for use in harsh temperature environments.

・Cold boot test -40℃
・Temperature cycle test IEC 60068-2-14:09 Test Nb
Parameters:-40℃~+90℃
Holding time: 3h
Cycles: 5

(The specified temperature range is -20℃ to +60℃. Product life will be shortened in high temperature environment)

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Vibration and shock testing

  • Vibration
    IEC 60068-2-6:07 Test Fc Sinus
    IEC 60721-3-3: Class 3M4
    Cycle number: 5 Hz – 8.5 Hz, amplitude p-p20㎜
    Cycle number: 8.5 Hz–500 Hz acceleration 3g
  • Shock
    IEC 60068-2-27:10 Test Ea
    IEC 60721-3-3: Class 3M6 & 3M7
    Shock Type: Sine Half-Wave
    Acceleration: 25g Duration: 6 ms
    Number of Shocks: 100 times on each of the X, Y, and Z axes
vibration

EMC Test

Immunity tests :EN IEC 61000-6-2:2019

Test Basic EMC standard or test method Industrial
[] is judgement
For consumer use (reference)
[] is judgment
Electrostatic Discharge Test EN 61000-4-2:2009 Contact ±4kV[B]
Air ±8kV[B]
Contact ±4kV[B]
Air ±8kV[B]
Radiated electromagnetic field immunity test EN IEC 61000-4-3:2020 10V/m[A] 3V/m[A]
Fast Transient/Burst Testing EN 61000-4-4:2012 I/O: ±1kV[B] I/O: ±0.5kV[B]
Lightning surge test EN 61000-4-5:2014+A1:2017 I/O: 0.5kV,1kV[B] I/O: 0.5kV,1kV[B]
Conducted electromagnetic field immunity test EN 61000-4-6:2014 I/O:10V[A] I/O:3V[A]
Power frequency magnetic field immunity test EN 61000-4-8:2010 30A/m[A] 3A/m[A]
Power supply voltage fluctuation test (AC) EN IEC 61000-4-11:2020 N/A N/A

Emission measurements:EN IEC 61000-6-4:2019

Test Basic EMC standard or test method Industrial For people’s livelihood
Radiated emissions
(enclosure port)
EN IEC 61000-6-4:2019 Table 3
EN 55016-2-3:2017+A1:2019
10m measurement method QP
30~230MHz 40dB
230~1000MHz 47dB3m measurement method QP
1~3GHz 76dB
3~6GHz 80dB
10m measurement method QP
30~230MHz 30dB
230~1000MHz 37dB3m measurement method QP
1~3GHz 70dB
3~6GHz 74dB
Conducted emissions
(wired network port)
EN IEC 610006 4:2019 Table 5
EN 55032:2015+A11:2020+A1:2020
0.15 ~0.5MHz 79dB
0.5 ~5MHz 73dB
5 ~30MHz 73dB
0.15~0.5MHz 66-56dB
0.5~5MHz 56dB
5~30MHz 60dB
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