Device and method for measuring radiation degradation of space vehicle information processing unit
A space vehicle and measuring device technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problems that are not suitable for satellites, etc., and achieve the effect of less power consumption and less FPGA resources
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specific Embodiment approach 1
[0022] Specific implementation mode 1: The radiation degradation measurement device of the spacecraft information processing unit in this implementation mode is as follows: figure 1 As shown, the measurement device is arranged inside the FPGA device of the aircraft, including the ring vibration group 10, the output selection switch 20, the counter 40, the timer 30, the measurement control module 50 and the output bus interface 60, wherein the ring vibration group 10 Including at least one ring oscillator unit, the output selection switch 20 is used to select one from all ring oscillator units to provide a frequency signal for the counter 40 through address changes, and the frequency signal is used to reflect the degree of degradation of the FPGA device; The timer 30 is configured to have a predetermined timing duration, and when the timing duration is reached, a stop signal is sent to the counter 40 and the measurement control module 50; 40 and the timer 30 send a start signal...
specific Embodiment approach 2
[0034] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the radiation degradation measurement device of the spacecraft information processing unit may further include a result buffer module 70 for buffering the frequency signals stored in the measurement control module.
[0035] The advantage of this setting is that it can realize the fast readout of the ring vibration test results, reduce the bus overhead, store the ring vibration test results in the on-chip memory uniformly, wait for all the tests to be completed, and read them out uniformly. If the data reading rate is not considered, the result cache module 70 can be canceled, and after each ring vibration test is completed and the result is sent, the next ring vibration test is performed.
[0036] Other steps and parameters are the same as those in Embodiment 1.
specific Embodiment approach 3
[0037] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the ring oscillator unit includes an odd number of NOT gates, the NOT gates are connected end to end, and the input end of the first NOT gate is connected to the last NOT gate. After the output end of the output terminal is connected, it is connected with the output selection switch.
[0038] Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.
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