The Magnetic Amplitude and Gradient Probe System (MAGPy V2) was specifically developed for exposure and compliance evaluations of wireless power transfer (WPT) systems and any other strong magnetic near-field sources operating at frequencies of 3 kHz – 10 MHz with respect to reference levels and basic restrictions. The probe is constructed of 24 small time-domain loop sensors arranged on the corner of a cube for determining the magnetic (H/B-) field amplitude and gradient, and of two dipole sensors and a monopole sensor to measure the electric (E-) field amplitude simultaneously. Conservative estimates of the induced E-fields, current density, and specific absorption rate (SAR) in the human body at any position are compared to basic restrictions, while the incident H/B- and E-fields are compared to reference levels and displayed in real time in the time domain or frequency domain on the intuitive graphical user interface (GUI). By comparison with basic restrictions, MAGPy V2 lowers the overestimation introduced by compliance testing with reference levels by up to 40 dB. MAGPy is fully compatible with IEC PAS 63184 (Clause 5.2.3 and 5.2.4) and enables compliance testing compatible with FCC KDB 680106 D01 and ISED Canada SPR-002.
Pictures above show MAGPy V1 (updated soon)
System |
MAGPy V2 is composed of the MAGPy-8H3D+E3D probe and the MAGPy Data Acquisition System (MAGPy-DAS), connected to the tablet PC with the intuitive browser-based GUI. The induced E-field/current density and SAR are assessed by using the coupling transformation function. |
|
Applications |
MAGPy V2 is optimized for in situ exposure and compliance evaluations at any location with high fields, including:
|
|
Basic Configuration |
MAGPy V2 basic configuration:
|
|
MAGPy-DAS |
MAGPy Data Acquisition System specifications:
|
|
MAGPy-8H3D+E3D Probe |
Probe design:
Sensor specifications:
|
|
Software |
MAGPy V2 is easy to use via its intuitive GUI installed on the tablet PC. The following is displayed in real-time:
The latest software and firmware can be downloaded here. |
|
API (Application Programming Interface) |
The MAGPy 2.0 Desktop application includes an HTTP server that exposes a REST-like API (Representational State Transfer). The API allows controlling parts of the application via HTTP requests as well as obtaining the same readings as those displayed in the user interface. The interchange data format for both inputs and outputs is JavaScript Object Notation (JSON). The ubiquity of REST-like APIs and JSON allows easy integration in other services. The MAGPy-API enables:
Watch the video here to experience the MAGPy-API. |
|
Calibration | Calibrated according to IEC PAS 63184 (ISO/IEC 17025 accreditation pending) | |
Verification | ||
Dimensions & Weight |
200 x 635 x 44 mm 2.2 kg (including tablet PC) |
|
Temperature range |
0 °C - 35 °C |
|
MAGPy Validation |
Pending |
|
EM Safety Guideline Compatibility |
MAGPy evaluates the reference values and basic restrictions according to:
|
|
Standard Compatibility |
MAGPy is fully compliant with:
|
|
Unique Features |
||
Wide Frequency Range H-Field Sensors E-Field Sensors Measurement Range Gradient Range Sampling Rate
GUI API Interface |
3 kHz – 10 MHz Multiple 1 cm2 loop sensors Sensors integrated in the probe sphere 0.1 – 3200 A/m (0.12 μT – 4 mT) 0 – 80 T/m/T 25 MHz (real-time decimation supported for H/B-field sensors) Easy to use Python based |
|
Benefits |
||
Basic Restrictions & Reference Levels
Increased Accuracy Large Dynamic & Frequency Range Novel Standardized Compliance Testing Method Reduced Interference All-in-One Device Turnkey Standard Compatible Trusted |
Only instrument that can determine compliance with basic restrictions in situ (gain compared to reference levels in high gradients > 40 dB) High spatial resolution (1 cm3) Covers the major range of near-field WPT sources MAGPy: estimation of induced fields and SAR through amplitude and gradient information (GGSM method) Low interaction with the measured fields Measures incident (H/B/E-) fields for assessment of compliance with reference levels and basic restrictions Fully equipped with web-based GUI and embedded software for compliance testing Compliance testing procedure in line with the latest standards (IEC PAS 63184) Confidence in capturing all fields close to source and with small measurement uncertainty |
|
Compatibility | DASY8 Module R&D | |
Product History |
– |
|
Release Date |
January 2023 |