An angle sensor often has to function reliably even under harsh operating conditions. These sensors provide accurate angle data that is used in applications in Mobile work machines, Automotive engineering and Industrial automation are needed. Discover how angle sensors work and their technological advantages using the example of some applications in our article. Learn how they increase efficiency and accuracy across various industries.

Contents

• Magnetic angle sensors with CAN SAE J1939 interface
• Small magnetic angle sensor for tight installation spaces
• Angle sensor for PCB-less applications
• 2 axis tilt sensor in IP67 for mobile machines
• Configurable precise multi-turn wire potentiometer
• Analogue sensors for a variety of angle measurements

Magnetic angle sensors with CAN SAE J1939 interface

March 25.03.2021, XNUMX | Mobile work machines for construction, agriculture and forestry as well as industrial trucks are used in an environment that is demanding sensors requires. Has specially designed for such applications Novotechnik three magnetic angle sensor series developed.

Sensors in the named industries must also be under harsh operating conditions work reliably. In addition, the installation space is often limited and safety-relevant factors play a role. The robust angle sensors from Novotechnik are all three based on the same electronic design.

Angle sensor with 360 degree measuring range 

The magnetic angle sensors of the series RFC-4800 from Novotechnik are compact, easy to assemble and offer measurement data acquisition over a rotation angle measuring range over a full 360 degrees with a resolution of up to 14 bits. The signals are analog, digital or via fieldbus passed on.

This angle sensor series has already proven itself in many mobile applications. Through the separate locator The compact angle sensors can be easily installed. For measurements in commercial vehicles, the sensor is also available with a CAN SAE J1939 or CANopen interface.

The  CAN SAE J1939 Protocol offers high immunity to interference, low cablingeffort and diagnostic options. There are also other attractive sensor functions such as parameterizable direction of rotation, position offset and a (volatile) revolution counter. The position and speed signals are output via one or two channels.

The magnetic angle sensors are also very robust and have a long service life Oscillations and vibrations up to 20 g according to IEC 600658-2-6 and Bumps up to 50 g according to IEC 68068-2-27 and above all meet all EMC specifications required in mobile applications. The strict requirements from the ECE-R10 regulation on electromagnetic compatibility are far exceeded. The permissible ambient temperature is between -40 ° and +105 ° C, IP67 or IP6K9K certificates are granted.

High linearity and repeatability

The sensor can be easily installed in the vehicle. For the Angle detection A positioning magnet is attached to the rotating axis. Depending on the angle of rotation, the orientation of the magnetic field changes and thus the signals from the sensor, which is only around 15 mm flat. This signal change is converted by the sensor IC into an output signal proportional to the angle of rotation and the higher-level signal steering made available. The (independent) linearity of the measurement signal is ±0,5%, the repeatability is 0,36°.

The RSA 3200 and RFE-3200 Sensors are available in a shaft design (RSA) and in a non-contact version with a separate position sensor (RFE). They have been specially designed for applications at high temperatures up to +125 °C and offer industry-standard contacting with the Micro Quadlock connector.

Design and manufacture of the angle sensors

The video provides information about construction details and functionality of angle sensors, shows areas of application and provides insights into development, production and testing.

Small magnetic angle sensor for tight installation spaces

Oct 13.10.2020, XNUMX | Sensors in industry often have to fit into tight installation spaces and function under harsh environmental conditions such as moisture, dirt and cleaning. ASM presents Posirot Pras1, a rod-shaped angle sensor. It has a diameter of just 10,6 mm and is 53 mm long. Thanks to its slim design, the angle sensor is suitable for very narrow installation spaces and fits particularly into door hinges.

The Posirot Pras1 angle sensor measures the Turning positions from 0 to 360 degrees using Hall effect sensor arrays and external position magnets. The magnetic one Encoder Technology works without contact. The sensor design has no moving parts. Pras1 sensors are particularly shock and vibration resistant.

Angle sensors in IP67 and IP69

The sensor housing is off Stainless Steel manufactured. Protection class IP67 and optionally IP67/IP69 are guaranteed with the appropriate mating connector. This makes the angle sensors suitable for use in difficult environmental conditions such as packaging machines or filling systems. The IP69 version is also suitable for applications with intensive cleaning processes such as Pharma industry and food technology.

Probe measures in the µ range directly on the machine

The Measuring range of the sensor is 0-15 ° to 0-360 ° (in 15 ° steps). It is available with the output types 0.5 ... 10 V, 0.5 ... 4.5 V or 4 ... 20 mA. The resolution is 0,03% (60 ... 360 °) and 0,1% (15 ... 45 °). The linearity is specified as ± 0,3% of the measuring range. Alternatively there is the sensor with incremental or digital output (SSI).

TMR sensors for PCBless applications

20.06.2018 | TDK expands the TMR angle sensor portfolio with the TAD2140 sensor in a TO-6 housing for use in automotive and industrial electronics. The sensor offers a system-in-package solution for PCBless applications and features two complete TMR bridges, an ASIC for signal processing and integrated passive components.

He guarantees one Angular accuracy of ±0,2° and thus achieves the world's lowest angular noise of just ±0,05° at room temperature. The sensor records angles from 0 to 360 ° in a temperature range of −40 ° to +150 ° C without contact with the measurement object.

Thanks to the quick Response Times the angle sensor, the high accuracy in angle measurement and the further developed compensation algorithms, it is suitable for optimizing motor control applications, such as BLDC motor-commutation.

In addition, due to its small housing size, it is ideal for applications with limited space, such as the commutation of the steering motor is the case in the vehicle.

2 axis tilt sensor in IP67 for mobile machines

June 11.06.2018, 2 | The 60-axis inclination sensor of the "PE-MEMS-x/y-i/GSXNUMXL" series from FSG can simultaneously measure the tilt angles of the X and Y axes and is suitable for a measuring range of up to ±60°. The measured value output for each tilt axis occurs via a 4 to 20 mA interface.

Due to the wear-free microelectromechanicalen measuring system, the robust plasticcasing With protection class IP67 and easy connection via a 4-pin M12 connector, the inclination sensor is suitable for use in mobile machines.

Typical applications These include the inclination detection of vehicle platforms or the angular position measurement on boom arms Construction. With a resolution of 3000 digits/16 mA and an absolute accuracy of ±0,25°, the inclinometer is also predestined for many other applications.

The permissible temperature range is -30 ° to 70 ° C. The 50 x 50 mm sensor housing with an installation height of 35 mm (including the central M12 connection) has four M4 screw holes for mounting the device.

Configurable precise multi-turn wire potentiometer

05.09.2016 | Megatron supplies an enormous range of high-quality angle sensors for all applications, including economical precision potentiometers. The “AL(IR)17/19xx” multi-turn wire potentiometer series alone opens up hundreds of different applications, for example Drive Technology.

The analog ones Multiturn angle sensors The AL17xxM and AL19xxM series are suitable as precise setpoint generators. Applications and locations where precise angle measurement with an analog output signal needs to be implemented as economically as possible are typical.

Multi-helical wire potentiometers measure travel paths linearly over a Spindle or worm drive be converted into a rotary movement. A typical application example is the memory function in first class airplane seats. Here the wire potentiometer provides precise feedback on the different positions of the respective axis.

Key data from the wire potentiometer

The multi-coil wire potentiometers have a Linearity tolerance of ± 0,25%. The 22 mm housing with central mounting can be sealed with an optional shaft sealing ring (IP54). Further options are a tandem design for redundant connections, different resistance values, special shaft geometries, a shaft on the back as well as cable and connector variants. Megatron also offers the whole thing in small series.

Precise fork and angle light barriers down to the last corner

The two AL series are offered with three, five or ten coils, which makes them electric angle of rotation of 1080 °, 1800 ° or 3600 ° rotation angle. The wire potentiometers achieve a maximum service life of 300.000, 500.000 or 1.000.000 revolutions. The maximum adjustment speed is 40 minutes^-1.

Wire potentiometer in hybrid technology

The shaft is made of stainless steel and the housing is made of glass fiber reinforced nylon manufactured. The wire potentiometer series HH17xxM / 19xxM in hybrid technology is ideal for higher service life requirements and low signal noise.

The range is rounded off by the ALIR17xxM and ALIR19xxM series. They also enable operation with a radial axle load of up to 4N. The high-performance polymer is particularly effective when force is applied to the shaft endbearings Overall even more stability in the rear housing cover of the storage. In addition, an integrated Slip clutch this wire potentiometer from destruction by overrunning the end stops and facilitates the zero point adjustment. The slip torque is approx. 2 to 7 Ncm.

Analogue sensors for a variety of angle measurements

April 02.04.2014, XNUMX | The optimal sensor solution for detecting geometric quantities requires a customized sensor that can be selected according to the criteria of measuring range, resolution, accuracy, design and environmental conditions. AB Jödden has a suitable solution for all applications - from inductive to capacitive, in miniature and Atex versions.

To the post

Source: This article is based on information from the following companies: ASM, FSG, Megatron, Novotechnik, TDK.

You might also be interested in...

encoders | Industrial Ethernet and Industry 4.0 encoders

Encoders act as measurement sensors for precise speed measurement and position detection in manufacturing processes,...

Distance sensors | Distance, path, distance & Co.

Distance sensors, distance sensors, thickness gauges, etc. are distance sensors. In our article we highlight the...

Current sensor | Closed loop technology and reverb effect

Current sensors measure currents. In this article, discover the latest developments in the field of current sensors,...