Self-locking safety control circuit
By integrating a self-locking safety control circuit that includes start-up control, emergency stop, safe torque shutdown, hardware self-locking, and status monitoring units into a semiconductor device, the problems of functional dispersion, imperfect safety interlocking, and poor control reliability in the prior art are solved, achieving highly integrated and reliable safety control.
Patent Information
- Application Number
- CN202610498786.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-15
- Publication Date
- 2026-07-10
AI Technical Summary
Existing safety control solutions for semiconductor equipment are characterized by fragmented functions, low integration, and complex wiring, making them unsuitable for miniaturization requirements. The safety interlocking mechanism is inadequate, posing a risk that the safety torque shutdown circuit remains energized after an emergency shutdown. Control reliability is poor, with MCU crashes or power failures leading to load runaway. Status monitoring capabilities are insufficient, making it difficult to distinguish between different states.
Design a self-locking safety control circuit that integrates a start control unit, an emergency stop unit, a safety torque shutdown unit, a hardware self-locking unit, and a status monitoring unit on the same circuit board. The circuit controls the load power supply through pulse start signals, emergency stop signals, and safety torque shutdown signals, and uses a hardware self-locking mechanism and a status monitoring unit to distinguish the circuit status.
It improves circuit integration, simplifies wiring, reduces installation space, avoids load runaway caused by MCU crashes or power failures, achieves complete power cut-off in emergencies, and provides reliable status identification and fault diagnosis basis.
Smart Images
Figure CN122363004A_ABST