Equipment Server Message Validation for Multi-Device Access Control
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Solution Overview
Problem
Existing access control systems struggle to facilitate seamless communication and cooperation between various devices, including portable terminals, wireless tags, and robots, within a facility, requiring separate communication formats for each device type.
Innovation Solution
A communication system comprising an equipment server and device servers that utilize a common data format for message exchange, enabling the equipment server to control access control systems and device servers to manage device movements, with a data structure for determining message validity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate communication formats are defined for each device type, then communication precision for specific devices is improved, but device complexity and system adaptability deteriorate
Solution Approach 1:
The patent implements a universal message structure that can handle multiple device types (portable terminals, wireless tags, robots, mobility devices) through a single communication format. The message includes a device type field that identifies the sending device, allowing the access control system to process different device types uniformly without requiring separate communication protocols for each device category.
2Measurement precision
If separate communication formats are defined for each device type, then communication precision for specific devices is improved, but ease of operation deteriorates
Solution Approach 1:
The universal message format enables the access control system to easily cooperate with various devices moving in the facility without requiring separate format definitions. The standardized structure with device type identification allows uniform processing of passage requests from different device types, significantly improving ease of operation and system integration.
3Adaptability or versatility
If a common data format is used for all devices, then system adaptability and ease of operation are improved, but measurement precision for device-specific communication deteriorates
Solution Approach 1:
The message structure incorporates device-specific information fields tailored to different device types. The message includes fields for portable terminal information, wireless tag information, robot information, and mobility device information, allowing each device type to provide its specific characteristics while using the same overall communication format. This maintains both adaptability and communication precision.
4Measurement precision
If device-specific communication formats are used, then communication precision is improved, but loss of time in format conversion increases
Solution Approach 1:
By implementing a universal message format from the outset, the system eliminates the need for format conversion between different device types. The standardized structure with device type identification allows direct processing of messages from any device type, significantly reducing time loss associated with format translation and conversion operations.
Data Source
AI summary
In a communication system 1, a first communication unit 12 of an equipment server 10 communicates messages in a common data format with plural device servers 11. A equipment control unit 13 controls the access control system 6 including one or more passage restriction units 7, based on the message received by the first communication unit 12. The passage restriction units 7 are provided in the building 2 so as to be capable of restricting passage of plural devices 3. The device server 11 transmits the message to the equipment server 10 when the device 3 passes through a place where the passage restriction unit 7 is provided. The equipment control unit 13 determines whether or not the message is invalid based on the message received by the first communication unit 12. The equipment control unit 13 outputs an authentication request to the access control system 6.