一种真空规外部保护组件
By integrating protective circuit boards and components on the outside of the vacuum gauge, the vulnerability of the vacuum gauge to surge impacts and power supply anomalies is solved, thereby improving stability and reliability and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PIOTECH (SHENYANG) SEMICONDUCTOR EQUIPMENT CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-17
AI Technical Summary
Existing vacuum gauges lack protective measures and cannot withstand surge impacts or overcurrent or overvoltage caused by abnormal power supply, making them prone to damage and increasing maintenance costs.
Design an external protection component for a vacuum gauge, integrating a protection circuit board containing components such as a resettable fuse and a TVS diode, to provide overcurrent and overvoltage protection and ensure the stability of signal collection and power supply.
The vacuum gauge's self-protection capability has been enhanced, its stability and reliability have been improved, maintenance costs and the risk of equipment damage have been reduced, and efficient operation in complex environments has been ensured.
Smart Images
Figure CN224520648U_ABST
Abstract
Claims
1. A vacuum gauge external protection assembly, characterized by, include: A protective circuit board connected to the vacuum gauge is provided with a protection circuit, which provides power and signal collection functions to the vacuum gauge and prevents damage from overcurrent and overvoltage.
2. A vacuum gauge external protection assembly according to claim 1, wherein, The vacuum gauge has a negative terminal, an analog negative terminal, and a ground terminal.
3. A vacuum gauge external protection assembly according to claim 2, wherein, The protection circuit includes a first internal resistance breakdown protection element, which is connected to the negative terminal of the analog quantity.
4. A vacuum gauge external protection assembly according to claim 3, wherein, The first internal resistance breakdown protection element includes a resettable fuse.
5. A vacuum gauge external protection assembly according to claim 2, wherein, The protection circuit further includes a second internal resistance breakdown protection element, which is connected to the negative terminal of the analog quantity and the negative terminal respectively.
6. A vacuum gauge external protection assembly according to claim 5, wherein, The second internal resistance breakdown protection element includes a TVS diode.
7. A vacuum gauge external protection assembly according to claim 2, wherein, The protection circuit also includes a zero-adjustment element, which is connected to the negative terminal and the ground terminal respectively.
8. A vacuum gauge external protection assembly according to claim 7, wherein, The zero-adjustment terminal includes a TVS diode.
9. A vacuum gauge external protection assembly according to claim 3, wherein, The protection circuit also includes a data acquisition circuit, which is connected to the vacuum gauge, and the first internal resistance breakdown protection element is connected to the data acquisition circuit.
10. A vacuum gauge external protection assembly according to claim 9, wherein, The acquisition circuit includes a first sampling circuit, a second acquisition resistor, and an arithmetic unit. The first acquisition resistor is connected to the vacuum gauge. The arithmetic unit is connected to the first acquisition resistor and the first internal resistance breakdown protection element. The second acquisition resistor is connected to the first acquisition resistor and the first internal resistance breakdown protection element.