Dual Potentiometer Address Selection for Actuators
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Solution Overview
Problem
Existing actuators face challenges in setting network addresses and selecting direction of control, particularly due to difficult access locations and limited address options, and require improved methods for auxiliary switch setpoints and programmable running times.
Innovation Solution
The use of two potentiometers to set network addresses and direction of control, allowing access from multiple sides, and enabling programmable auxiliary switch setpoints and running times via a communications bus, with enhanced software in controllers and actuators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single potentiometer is used for address selection, then the device complexity is reduced, but the ease of operation deteriorates due to difficult access locations
Solution Approach 1:
The address selection function is segmented into two separate potentiometers: one for selecting the address range (0-7) and another for selecting the specific address within that range. This segmentation allows each potentiometer to be accessed from different sides of the housing, solving the accessibility problem while maintaining a relatively simple device structure.
2Ease of operation
If dip switches are used for address setting, then the device complexity is minimized, but the ease of operation deteriorates due to small size and difficulty to actuate
Solution Approach 1:
The patent replaces the mechanical dip switch system with an analog potentiometer system that interfaces with a microcontroller. The potentiometers provide mechanical rotation that is converted to digital signals through analog-to-digital conversion, eliminating the need for multiple small dip switches and improving ease of operation while maintaining manageable device complexity.
3Device complexity
If binary addressing methods are used, then the device complexity is reduced, but the ease of operation deteriorates due to requirement of multiple microcontroller input pins
Solution Approach 1:
The patent changes the addressing parameter from binary (requiring multiple digital pins) to analog (requiring only one or two analog input pins). By using potentiometers that output analog voltages proportional to their rotational position, the system reduces the number of microcontroller pins required while improving the ease of operation through larger, more accessible controls.
4Volume of moving object
If the actuator is located in difficult spaces, then the compactness is improved, but the ease of operation deteriorates due to inaccessibility for address setting
Solution Approach 1:
The patent creates asymmetric access to the potentiometers by positioning them on different sides of the housing. This allows installers to access the address selection controls from various directions, making it feasible to mount actuators in compact or difficult-to-reach locations while maintaining ease of operation during installation and configuration.
Data Source
AI summary
An actuator having two or more potentiometers for setting an address for use with a communications bus or the like. An adjustment or setting of the potentiometers may be accessible at two or more sides outside of a housing enclosing the actuator. One potentiometer may be set to a direction of control and a range of addresses. Another potentiometer may be set to one of several addresses within a range of addresses and direction of control selected on the first potentiometer.