Dynamic Controls Limited

Basis Nz Limited

Raztec Limited

Warren Pettigrew

Ian Palmer

Brendon David Hale

Gary Andrew James Dellow

Trevor Blogg

A current detection device for measuring current flowing through a conductor having a magnetic core having a channel for receiving the conductor therethrough, and a magnetic field transducer positioned at least partially within an air gap of the magnetic core. The magnetic field transducer is configured to respond to the presence of a magnetic field by generating an output electrical signal based on a flux density of the magnetic field. The magnetic core comprises an absolute saturation flux density that is substantially lower than an absolute saturation flux density of the magnetic field transducer. Accordingly, a response of the current detection device within the magnetic flux density operating range varies in sensitivity and is substantially non-linear. The response of the current detection device is preconfigured. The current detection device may be implemented in devices and systems where a substantially wide sensing range and relatively high, low-current sensitivity is desired.

Current detection device and related devices, systems and methods thereof

A mobility device profile generation system for producing a control profile for operating a mobility device. A system processor displays profile data stored in memory on a display device in the form of a graphical representation depicting a relationship between at least two variables associated with operating the mobility device. Using a human input device a user may interactively adjust the graphical representation to calibrate the relationship between the at least two variables to produce a control profile that limits the range of operation of a controller of a mobility device according to the graphical representation. This control profile may be loaded into a controller of a mobility device to limit operation according to the profile.

Method for producing a control profile to operate a mobility device

A method and system for calibrating a control profile of a controller having at least one output variable used to control the operation of a mobility device. The calibration system controls the mobility device according to a prescribed routine under a range of changes of values of the output variable. One or more sensors provided, either temporarily or permanently, on the mobility device sense operational parameters of the mobility device and send sensed data to the calibration system. The calibration system determines mobility device stability associated with the changes of the at least one output variable based on the sensed data and produces a control profile that restricts a controller from outputting changes of values of the output variable associated with mobility device instability.

Method for producing or calibrating a control profile for a wheelchair

A method of determining when to utilize a back EMF sampling method for motor resistance profiling in at least one DC motor, the method including the steps of analyzing a parameter prior to initializing the back EMF sampling method, and upon a determination that the analyzed parameter is within a defined range, initializing the back EMF sampling method.

Method or system for minimizing the impact of back EMF sampling for motor resistance profiling

A method of controlling at least one motor in a motorized mobility vehicle, wherein the motor is part of a drive circuit for mobilizing the mobility vehicle, the method comprising the steps of: utilizing a stored profile of a motor performance parameter to develop a compensation term for controlling the motor, wherein the stored profile is of a resistance based variable associated with the motor as a function of a further variable and dynamically updating the compensation term when the mobility vehicle is in use.

Growing community of inventors

Christchurch, New Zealand

Warren Pettigrew