55 lines
1.9 KiB
C#
55 lines
1.9 KiB
C#
using System.Diagnostics;
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using SSPCTester.Devices.Interfaces;
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namespace SSPCTester.Logic.Testing;
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/// <summary>基础通断测试的统一判定规则。</summary>
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public static class BasicTestCriteria
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{
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public const double OnVoltageThreshold = 1.0;
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public const double OffVoltageThreshold = 0.5;
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public const int SwitchSettleDelayMs = 1_000;
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public const int OffSettleTimeoutMs = 2_000;
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public const int OffInitialDelayMs = 100;
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public const int OffSampleIntervalMs = 100;
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public const int RequiredStableOffSamples = 2;
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public static bool IsOn(double voltage) => voltage > OnVoltageThreshold;
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public static bool IsOff(double voltage) => Math.Abs(voltage) < OffVoltageThreshold;
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/// <summary>
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/// 等待关断电压稳定。连续多次低于阈值才确认关断，避免旧帧和瞬时噪声造成误判。
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/// </summary>
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public static async Task<OffStateResult> WaitForStableOffAsync(
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ISspc sspc,
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int channel,
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CancellationToken ct = default)
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{
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await Task.Delay(OffInitialDelayMs, ct).ConfigureAwait(false);
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var stopwatch = Stopwatch.StartNew();
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int stableSamples = 0;
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ChannelMeasurement? latest = null;
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while (stopwatch.ElapsedMilliseconds < OffSettleTimeoutMs)
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{
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latest = await sspc.ReadMeasurementAsync(channel, ct).ConfigureAwait(false);
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stableSamples = IsOff(latest.Voltage) ? stableSamples + 1 : 0;
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if (stableSamples >= RequiredStableOffSamples)
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return new OffStateResult(true, latest, stopwatch.Elapsed);
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await Task.Delay(OffSampleIntervalMs, ct).ConfigureAwait(false);
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}
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latest ??= await sspc.ReadMeasurementAsync(channel, ct).ConfigureAwait(false);
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return new OffStateResult(false, latest, stopwatch.Elapsed);
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}
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}
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public sealed record OffStateResult(
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bool IsStableOff,
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ChannelMeasurement Measurement,
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TimeSpan Elapsed);
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