mobile in-shoe force measurement
The loadsol® system enables the measurement of the normal plantar force inside the shoe in both standing and dynamic movements.
Utilizing one flexible, flat sensor which covers the entire plantar surface of the foot, loadsol® measures the force between the foot and the shoe, regardless of which part of the foot is in contact with the insole.
The loadsol® sensor is based on patented technology and due to its linear properties also measures partial loads accurately.
The loadsol® is used for applications where the capture of the total force on the foot is needed.
The loadsol® does not capture the local pressure distribution under the foot. For this application novel’s pedar® system is the gold standard.
loadsol® technology has miniature electronics and communicates wirelessly via Bluetooth® with a mobile device.
One, two or three sensor areas scanned at up to 200 Hz provides the user with a more detailed analysis of the force loading under the foot.
The smartphone app has options to provide auditory or visual feedback based on the force.
Parameters such as peak force, cadence, loading rate, contact time and symmetry are also displayed in the app.
Long-term measurements allow the evaluation of various parameters. The data is transmitted real-time to the mobile device, or stored on-board (loadsol pro) for transmission via BT or micro USB later. Data may also be transferred to a Google Drive cloud for storage and further analysis later.
Options:
loadsol®:
| Number of sensor areas | 1, 2 or 3 |
| Frequency | 80 - 200Hz |
| Transmission | Bluetooth®LE |
| Power Supply | coin cell (up to 24h) |
loadsol®pro:
| Number of sensor areas | 1, 2, or 3 |
| Frequency | 1 - 200Hz |
| Power Supply | rechargeable via USB (>23h capacity) |
| Transmission | Bluetooth® LE 4.2, 5, and micro USB |
| Storage | on-board memory for >500h of measurements |
| External Synchronization | TTL input using loadsync® |
| Inertial Measurement Unit | 6-axis Accelerometer and Gyroscope |
loadsol® pro can be upgraded to include a high-end 6-axis inertial measurement unit (IMU) inside the electronics. The IMU includes a 16-bit tri-axial accelerometer and gyroscope, and can be used to analyze motion in additon to force.
IMU Specs
| Parameter | Accelerometer | Gyroscope |
| Digital resolution | 0.06 mg/LSB | 0.004 dps/LSD |
| Raw Measurement Range | Up to ±16 g | Up to ±2000 dps |
| Sensitivity | ±0.25 mg/K | ±0.02 dps/K |
| Noise Density | 160 µg/√Hz | 0.008 dps/√Hz |
The loadapp is easy to operate and if required allows for extensive display and evaluation of various parameters.
In order to further evaluate the acquired data for other applications, the data can be exported to an ASCII file. Additionally, the Windows loadpad® analysis software offers an extensive evaluation of the loadsol® data on the computer.
The loadsol® embd insole provides access to force data in real-time via direct connection. Using precision force data from various regions beneath the feet assists with achieving real-time control of your exoskeleton. Obtain instantaneous force insights from the plantar surface of the foot for immediate feedback. Seamlessly integrate a compact, precise, and dependable force measurement system.
The advanced force sensors scan quickly up to 200 Hz utilizing the integrated electronics. Force data is relayed as analog signals ranging from 0 to 2.5 V , with 2,000-step resolution, where each step corresponds to 2.5 N. This analog data is easily interpreted through your ADC, DAQ, data logger, or any preferred input.
Tech Specs
sizes: US 3-15/EU 34-48
number of sensors: 1, 2, or 3 with >99.6% covered sensor area
force range (N): 2.5 - 5000 N* (standard)
max thickness: less than 3.4 mm
mounting system: flexifit or clip
operating device: iOS, Android
weight: 22 / 16 grams
biofeedback: audio and visual
The loadsol® insole conforms well to surfaces and therefore it is possible to wear with an orthotic or footwear with specialized footbed.
The electronics were intentionally not integrated into the thin loadsol® sensor to minimize a proprioception change of the plantar surface of the foot, the biomechanics of the gait, as well as the function of a corrective orthotic.
The miniature electronics can be attached to the upper part of the shoe, i.e. the laces or wrapped around the lower leg.
The loadsol® insole is available in children and adult shoe sizes and in four versions with different sensor area layouts.
Thus, the load on the foot can also be captured separately in up to three subareas.
For specific applications there are additional customizable divisions and sizes available.
At novel, our priority is to enable the highest quality in measurement and we strongly believe in art in science.
Please feel free to contact us and we can assist you in determining the right solution for your application.
Know what you need for your application; feel free to request a quote.