Z-Wave Thermostat Controller Shift via Server
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Solution Overview
Problem
In Z-Wave networks, adding multiple thermostats to a home automation system can result in multiple primary controllers, creating separate networks and limiting control to only those devices within each network, as only one primary controller can exist per network.
Innovation Solution
An Internet server manages the registration process, instructing Z-Wave networking devices to configure as either primary controllers or repeaters based on network conditions, ensuring only one primary controller exists while allowing additional devices to join as repeaters, enhancing network range and robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple thermostats are added to a Z-Wave network, then device quantity and control capability increase, but network stability deteriorates due to creation of multiple primary controllers forming separate networks
Solution Approach 1:
The patent segments the thermostat functionality into two distinct roles: primary controller and repeater. The inclusion mode divides the thermostat's operational capacity, allowing it to either establish a new network or extend an existing one, preventing role conflicts and network fragmentation.
Solution Approach 2:
Instead of allowing each thermostat to default to primary controller mode, the patent inverts the default behavior by configuring thermostats as repeaters by default. This reversal prevents automatic network fragmentation while still enabling full control capability through the repeater's ability to relay commands across networks.
2Adaptability or versatility
If thermostats are configured as primary controllers, then control capability increases, but device complexity increases due to inclusion/exclusion processes requiring direct RF proximity and user interaction
Solution Approach 1:
The patent introduces a remote device as an intermediary that manages the inclusion process. Instead of requiring direct user interaction between thermostats and controllers, the remote device mediates the enrollment, placing controllers in inclusion mode remotely and coordinating the addition of thermostats to the network without requiring physical proximity.
Solution Approach 2:
The system performs preliminary actions by pre-configuring thermostats with repeater functionality and pre-establishing the primary controller's inclusion mode before actual thermostat enrollment. This preparation eliminates the need for complex real-time coordination during the inclusion process.
3Reliability
If thermostats act as repeaters, then network range and robustness improve, but control capability may be limited if not properly configured as primary controllers
Solution Approach 1:
The patent makes the thermostat universally capable by integrating both primary controller and repeater functionalities within a single device. The thermostat can dynamically switch between or combine these roles, allowing it to extend network range as a repeater while maintaining full control capability through its inherent thermostat functions and optional primary controller operations.
Data Source
AI summary
A Z-Wave networking device is disclosed having a processor, a WiFi transceiver, a Z-Wave network transceiver, and a flash memory from which the processor boots a startup image. The processor can boot a first startup image that configures the Z-Wave network transceiver as a Z-Wave network controller, and the processor can boot a second startup image that configures the Z-Wave network transceiver as a Z-Wave repeater node. An Internet server receives registration information for the device, and instructs the device to boot from the first startup image upon determining that a Z-Wave network controller is not present in the Z-Wave network, or from the second startup image upon determining that a Z-Wave network controller is already present in the Z-Wave network. In embodiments, the Z-Wave networking device comprises an HVAC thermostat.