aruncsh/ContecMonitor
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reorganize application code into fiveparaminte-main directory structure

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This commit is contained in:
rkcsh
2026-09-17 14:30:02 +05:30
parent 1b1b382f3e
commit 68bda2519f
16 changed files with 1080 additions and 379 deletions
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contec_parser.py
+22 -31
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@@ -165,6 +165,10 @@ def parse_contec_hl7_text(raw_text: str, client_ip: str) -> Optional[NormalizedV
if len(fields) > 8 and fields[8]:
vitals_dict["patient_gender"] = fields[8].strip().upper()
# PID-35: Patient Category (ADULT / PEDIATRIC / NEONATAL)
if len(fields) > 35 and fields[35]:
vitals_dict["patient_type"] = fields[35].strip()
elif seg_name == "PV1":
# PV1-3: Assigned Patient Location (Room^Bed^...)
if len(fields) > 3 and fields[3]:
@@ -174,6 +178,10 @@ def parse_contec_hl7_text(raw_text: str, client_ip: str) -> Optional[NormalizedV
if bed:
vitals_dict["bed_id"] = bed
# PV1-18: Patient Type
if len(fields) > 18 and fields[18]:
vitals_dict["patient_type"] = fields[18].strip()
elif seg_name == "OBX":
if len(fields) > 5:
obs_val = fields[5].strip()
@@ -279,6 +287,7 @@ def _parse_45_byte_packet(data: bytes, vitals_dict: dict) -> bool:
if "present_fields" not in vitals_dict:
vitals_dict["present_fields"] = []
logger.debug("DEBUG_NIBP_PKT len=%d nibp_hex=%s", len(data), data[8:24].hex())
nibp_sys = read_u16_le(data, 15)
nibp_dia = read_u16_le(data, 17)
nibp_map = read_u16_le(data, 19)
@@ -363,42 +372,26 @@ def _parse_spo2_waveform_packet(data: bytes, vitals_dict: dict) -> bool:
if "pleth_wave" not in vitals_dict["present_fields"]:
vitals_dict["present_fields"].append("pleth_wave")
found = False
# Check SpO2 at standard offset 264
spo2_val = read_u16_le(data, 264)
# If 264 is disconnected sentinel, probe is NOT connected / off-finger
if spo2_val in (None, 65535, 32767, 255, 9999, 0):
vitals_dict["spo2"] = None
vitals_dict["heart_rate"] = None
if "spo2" not in vitals_dict["present_fields"]:
vitals_dict["present_fields"].append("spo2")
if "heart_rate" not in vitals_dict["present_fields"]:
vitals_dict["present_fields"].append("heart_rate")
return True
if 50 <= spo2_val <= 100:
if spo2_val is not None and 50 <= spo2_val <= 100:
vitals_dict["spo2"] = float(spo2_val)
if "spo2" not in vitals_dict["present_fields"]:
vitals_dict["present_fields"].append("spo2")
found = True
# ECG HR is at offset 266 in the 286-byte SpO2 waveform packet footer.
# Offset 268 is the SpO2 HIGH ALARM LIMIT (always 100) — NOT pulse rate!
# So we read ECG HR at 266 only.
# Pulse Rate / ECG HR is at offset 266 in the footer
ecg_hr = read_u16_le(data, 266)
logger.info(
f"SpO2 pkt: SpO2[264]={spo2_val} ECG_HR[266]={ecg_hr} alarm_hi[268]={read_u16_le(data,268)} alarm_lo[270]={read_u16_le(data,270) if len(data)>=272 else 'N/A'}"
)
if ecg_hr is not None and ecg_hr not in (9999, 65535, 32767, 0) and 20 <= ecg_hr <= 300:
vitals_dict["heart_rate"] = float(ecg_hr)
if "heart_rate" not in vitals_dict["present_fields"]:
vitals_dict["present_fields"].append("heart_rate")
return found
logger.info(
f"SpO2 pkt: SpO2[264]={spo2_val} ECG_HR[266]={ecg_hr} alarm_hi[268]={read_u16_le(data,268)} alarm_lo[270]={read_u16_le(data,270) if len(data)>=272 else 'N/A'}"
)
return True
def _parse_286_byte_packet(data: bytes, vitals_dict: dict) -> bool:
@@ -434,13 +427,13 @@ def _parse_989_byte_packet(data: bytes, vitals_dict: dict) -> bool:
if "ecg_wave" not in vitals_dict["present_fields"]:
vitals_dict["present_fields"].append("ecg_wave")
logger.debug("DEBUG_ECG_PKT len=%d tail_hex=%s", len(data), data[890:989].hex())
hr_val = read_u16_le(data, 904)
if hr_val is not None and hr_val not in (65535, 9999, 0) and 20 <= hr_val <= 300:
# Only use ECG HR if SpO2-probe PR has NOT already set heart_rate.
# SpO2 PR (from the pleth packet) matches the monitor display and wins.
if "heart_rate" not in vitals_dict.get("present_fields", []):
if hr_val is not None and hr_val not in (65535, 32767, 9999, 0) and 20 <= hr_val <= 300:
if vitals_dict.get("heart_rate") is None:
vitals_dict["heart_rate"] = float(hr_val)
vitals_dict.setdefault("present_fields", []).append("heart_rate")
if "heart_rate" not in vitals_dict.setdefault("present_fields", []):
vitals_dict["present_fields"].append("heart_rate")
return True
@@ -478,9 +471,7 @@ def _find_vitals_block_in_stream(data: bytes, client_ip: str) -> Optional[Normal
elif pkt_len == 989:
if _parse_989_byte_packet(pkt_data, vitals_dict):
found_any = True
elif 100 < pkt_len < 600:
if _parse_spo2_waveform_packet(pkt_data, vitals_dict):
found_any = True
# Handled specifically by known packet sizes above
i += max(pkt_len, 4)
else: