Radiation hardening study for control chips in casualty transport robots
10.19745/j.1003-8868.2025195
- VernacularTitle:伤病员转运机器人控制芯片的抗辐射研究
- Author:
Jian-jun CHEN
1
;
Fang GUO
1
;
Zhen-dong ZHENG
1
Author Information
1. 北部战区总医院肿瘤科,沈阳 110840
- Publication Type:Journal Article
- Keywords:
gallium nitride;
nuclear radiation;
robot;
casualty transport;
control chip
- From:
Chinese Medical Equipment Journal
2025;46(11):18-23
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the performance of gallium nitride(GaN)-based digital circuit chips applied in nuclear radiation environments and investigate the feasibility of their use in control chips for robots transporting injured personnel.Methods First,a GaN-based NAND gate digital circuit chip was fabricated.Second,both the GaN-based digital chip and the SN74AHCT1G00 silicon-based digital chip were irradiated with 60Co gamma-ray.The irradiation doses for the GaN-based digital chip were 1 Mrad(Si)and 2 Mrad(Si),while the irradiation dose for the SN74AHCT1G00 silicon-based digital chip was 1 Mrad(Si).Finally,the post-irradiation electrical performance of the two chips was measured using a Keithley 4200A-SCS semiconductor characterization system.Results Under 60Co gamma-ray irradiation doses of 1 Mrad(Si)and 2 Mrad(Si),the response delay of the GaN-based digital circuit chip was only on the order of 0.1 μs.In contrast,the response rate of the SN74AHCT1G00 silicon-based digital circuit chip significantly degraded under 60Co gamma-ray irradiation dose of 1 Mrad(Si),rendering it unable to perform the NAND gate logic function.Conclusion GaN-based digital circuit chips exhibit high radiation resistance in 60Co gamma-ray irradiation environments,with no significant performance degradation.Compared with silicon-based digital circuit chips,they demonstrate considerable advantages and can preliminarily meet the requirements for control chips of robots transporting injured personnel in nuclear radiation environments.
