Single-Pair Drive-Through Intercom Link for Power and Digital Audio
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Solution Overview
Problem
Existing intercom communication systems for quick-service restaurant drive-throughs are inefficient in capturing and transmitting order information accurately and reliably, often requiring multiple components and complex wiring setups, which can lead to errors and increased operational costs.
Innovation Solution
A system comprising an audio-order placement sub-system with a microphone, encoder, decoder, and transceiver, powered by a base station through a single pair of wires, that captures and transmits order information in digital format, and an audio-order receipt sub-system with a headset to receive and decode signals, facilitating efficient communication between customers and staff.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple components and complex wiring setups are used for intercom communication, then communication functionality is achieved, but system complexity and error rates increase
Solution Approach 1:
The patent combines multiple functions (power supply, audio transmission, data communication) into a single wiring infrastructure. The audio-order placement subsystem integrates microphone, speaker, and transceiver components that all operate through one shared connection to the base station, eliminating the need for separate wiring for each function and reducing overall system complexity while maintaining reliability
2Reliability
If analog audio signals are transmitted directly, then simplicity is maintained, but signal accuracy and reliability deteriorate
Solution Approach 1:
The patent replaces direct analog audio transmission with a digital signal processing system. The audio-order placement subsystem converts captured analog audio signals into digital format, encodes them into data packets, and transmits these digital packets to the base station. This substitution of digital processing for direct analog transmission improves signal accuracy and reliability while managing the added complexity through standardized encoding protocols
3Ease of manufacture
If power is supplied through separate wiring, then power delivery is reliable, but installation complexity and cost increase
Solution Approach 1:
The patent implements a universal wiring system that performs multiple functions simultaneously. The single pair of wires connecting the audio-order placement subsystem to the base station provides power delivery, audio signal transmission, and data communication all through the same physical medium. This multi-functional approach simplifies installation by reducing the number of wiring harnesses needed while maintaining efficient power delivery through the shared infrastructure
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enables seamless, error-free communication by converting analog order information into digital signals for transmission over a single pair of wires, reducing operational complexity and enhancing customer-staff interaction at drive-throughs.
Implementation Method 1
transmit the order data packets from the audio-order placement sub-system to the base station through a single pair of wires, and receive the restaurant data packets from the base station through the single pair of wires
Implementation Method 2
At least one of the analog-to-digital converter, the digital-to-analog converter, the order-placement encoder, the order-placement decoder, the speaker, and the order-placement transceiver may be powered by power transmitted from the base station through the single pair of wires
Implementation Method 3
a microphone configured to capture sound from a customer placing an order at or near one or both of the menu board and the speaker post, and to generate (analog or digital) order information signals that represent the sound captured from the customer
Implementation Method 4
a speaker configured to generate restaurant sound based on the restaurant signals such that the generated restaurant sound is audible to the customer at or near one or both of the menu board and the speaker post
Data Source
AI summary
Systems and methods for facilitating intercom communication for one or more quick-service restaurant drive-throughs are disclosed. Exemplary implementations may: capture sound from a customer placing an order; generate order information signals that represent the captured sound; encode signals to form order data packets; transmit the order data packets to a base station through a single pair of wires that is also used to provide power; decode information from the order data packets; and generate order sound based on the decoded information, such that the generated order sound is audible to a staff member of the quick service restaurant through a headset.