CNC Control Device Connection Verification via Wireless Feedback
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Solution Overview
Problem
In communication systems with servo amplifiers connected to a numerical control device, ensuring that the control device and servo amplifiers are correctly connected in a predetermined relationship is challenging, leading to issues with command signal delivery and system control.
Innovation Solution
A system with a communication circuit in at least one device for wireless communication, including a signal transmitter to send a call signal, a receiver circuit to receive a recall signal, and a determination unit to verify the connection relationship, allowing easy detection of correct connections between the control device and devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the CNC and multiple servo amplifiers are connected in a predetermined connection relationship, then the command signal can be delivered to the intended servo amplifier, but it becomes difficult to detect whether the connection is correct
Solution Approach 1:
The patent implements a feedback mechanism where the control device sends a call signal to the servo amplifier, and the servo amplifier responds with a recall signal if it correctly receives the call signal. This feedback loop enables the control device to verify whether the connection relationship is correct, resolving the detection difficulty while maintaining reliable command signal delivery
Solution Approach 2:
The servo amplifier automatically generates and transmits the recall signal in response to receiving the call signal, without requiring external verification equipment. This self-service approach simplifies the detection system by using the existing components to verify their own connection status
2Difficulty of detecting and measuring
If wireless communication is added to detect connection relationships, then detection becomes easier, but device complexity increases
Solution Approach 1:
The communication circuit is designed to serve dual purposes: it enables wireless communication for connection verification and also handles command signal transmission. By making the communication circuit multi-functional, the patent avoids adding separate dedicated verification equipment, thus reducing overall system complexity while improving detection capability
Data Source
AI summary
A system includes a communication circuit provided in at least one of multiple devices that are connected to a control device in a predetermined connection relationship. The control device includes: a signal transmitter designating, as a destination, one of the devices provided with the communication circuit, based on the connection relationship, and transmitting a call signal to the device designated as the destination; a receiver circuit wirelessly receiving a recall signal, which is transmitted in response to the call signal; and a determination unit determining that the control device and the device designated as the destination are connected in the connection relationship when the receiver circuit receives the recall signal. The communication circuit wirelessly transmits the recall signal to the control device when the device provided with the communication circuit itself is designated as the destination and when the device provided with the communication circuit itself receives the call signal.