vav.py 14 KB

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  1. # -*- coding: utf-8 -*-
  2. from operator import attrgetter
  3. from typing import Dict, List, Optional, Tuple
  4. import numpy as np
  5. from fastapi import HTTPException
  6. from httpx import AsyncClient
  7. from loguru import logger
  8. from sqlalchemy.orm import Session
  9. from app.controllers.equipment.controller import EquipmentController
  10. from app.crud.space.weight import get_weights_by_vav
  11. from app.models.domain.devices import ACATVAInstructionsRequest
  12. from app.schemas.equipment import VAVBox, FCU
  13. from app.schemas.instructions import ACATVAInstructions
  14. from app.schemas.sapce_weight import SpaceWeight
  15. from app.schemas.space import Space
  16. from app.services.platform import DataPlatformService
  17. from app.services.transfer import Duoduo, SpaceInfoService, Season
  18. from app.utils.date import get_time_str
  19. class VAVController(EquipmentController):
  20. def __init__(self, equipment: VAVBox):
  21. super(VAVController, self).__init__()
  22. self.equipment = equipment
  23. async def get_strategy(self):
  24. strategy = 'Plan A'
  25. for space in self.equipment.spaces:
  26. for eq in space.equipment:
  27. if isinstance(eq, FCU):
  28. strategy = 'Plan B'
  29. break
  30. return strategy
  31. async def build_virtual_temperature(self) -> Tuple[float, float]:
  32. target_list, realtime_list = [], []
  33. buffer_list = []
  34. strategy = await self.get_strategy()
  35. for space in self.equipment.spaces:
  36. if not np.isnan(space.temperature_target):
  37. target_list.append(space.temperature_target)
  38. realtime_list.append(space.realtime_temperature)
  39. if strategy == 'Plan B':
  40. for eq in space.equipment:
  41. if isinstance(eq, FCU):
  42. buffer = (4 - eq.air_valve_speed) / 4
  43. buffer_list.append(buffer)
  44. break
  45. total_target = buffer_list + target_list
  46. total_realtime = buffer_list + realtime_list
  47. if total_target and total_realtime:
  48. target_result = np.array(total_target).sum() / len(target_list)
  49. realtime_result = np.array(total_realtime).sum() / len(realtime_list)
  50. self.equipment.setting_temperature = target_result
  51. else:
  52. target_result, realtime_result = np.NAN, np.NAN
  53. return target_result, realtime_result
  54. async def get_supply_air_flow_set(self, temperature_set: float, temperature_realtime: float) -> float:
  55. if np.isnan(temperature_set) or np.isnan(temperature_realtime):
  56. supply_air_flow_set = 0.0
  57. else:
  58. temperature_supply = self.equipment.supply_air_temperature
  59. if np.isnan(temperature_supply):
  60. temperature_supply = 19.0
  61. ratio = abs(1 + (temperature_realtime - temperature_set) / (temperature_set - temperature_supply))
  62. supply_air_flow_set = self.equipment.supply_air_flow * ratio
  63. supply_air_flow_set = max(self.equipment.supply_air_flow_lower_limit, supply_air_flow_set)
  64. supply_air_flow_set = min(self.equipment.supply_air_flow_upper_limit, supply_air_flow_set)
  65. self.equipment.supply_air_flow_set = supply_air_flow_set
  66. self.equipment.virtual_target_temperature = temperature_set
  67. self.equipment.virtual_realtime_temperature = temperature_realtime
  68. return supply_air_flow_set
  69. async def run(self):
  70. temperature_set, temperature_realtime = await self.build_virtual_temperature()
  71. await self.get_supply_air_flow_set(temperature_set, temperature_realtime)
  72. self.equipment.running_status = True
  73. def get_results(self):
  74. return self.equipment
  75. class VAVControllerV2(VAVController):
  76. def __init__(self, equipment: VAVBox, weights: Optional[List[SpaceWeight]] = None, season: Optional[Season] = None):
  77. super(VAVControllerV2, self).__init__(equipment)
  78. self.weights = weights
  79. self.season = season
  80. async def build_virtual_temperature(self) -> None:
  81. valid_spaces = []
  82. weights = []
  83. for sp in self.equipment.spaces:
  84. if sp.realtime_temperature > 0.0 and sp.temperature_target > 0.0:
  85. valid_spaces.append(sp)
  86. for weight in self.weights:
  87. if weight.space_id == sp.id:
  88. weights.append(weight)
  89. if valid_spaces:
  90. weights = sorted(weights, key=lambda x: x.temporary_weight_update_time)
  91. if weights[-1].temporary_weight_update_time > get_time_str(60 * 60 * 2, flag='ago'):
  92. # If someone has submitted a feedback in past two hours, meet the need.
  93. weight_dic = {weight.space_id: 0.0 for weight in weights}
  94. weight_dic.update({weights[-1].space_id: weights[-1].temporary_weight})
  95. else:
  96. weight_dic = {weight.space_id: weight.default_weight for weight in weights}
  97. total_weight_value = 0.0
  98. for v in weight_dic.values():
  99. total_weight_value += v
  100. if total_weight_value > 0:
  101. weight_dic = {k: v / total_weight_value for k, v in weight_dic.items()}
  102. else:
  103. weight_dic.update({list(weight_dic.keys())[0]: 1.0})
  104. try:
  105. virtual_target, virtual_realtime = 0.0, 0.0
  106. for sp in valid_spaces:
  107. virtual_target += sp.temperature_target * weight_dic.get(sp.id)
  108. virtual_realtime += sp.realtime_temperature * weight_dic.get(sp.id)
  109. except KeyError:
  110. logger.error(f'{self.equipment.id} has wrong vav-space relation')
  111. raise HTTPException(status_code=404, detail='This VAV box has wrong eq-sp relation')
  112. self.equipment.virtual_target_temperature = virtual_target
  113. self.equipment.virtual_realtime_temperature = virtual_realtime
  114. else:
  115. self.equipment.virtual_target_temperature = np.NAN
  116. self.equipment.virtual_realtime_temperature = np.NAN
  117. async def rectify(self) -> Tuple[float, float]:
  118. bad_spaces = list()
  119. for sp in self.equipment.spaces:
  120. if (sp.realtime_temperature > max(27.0, sp.temperature_target) or
  121. sp.realtime_temperature < min(21.0, sp.temperature_target)):
  122. bad_spaces.append(sp)
  123. if bad_spaces:
  124. virtual_diff = self.equipment.virtual_target_temperature - self.equipment.virtual_realtime_temperature
  125. if self.season == Season.cooling:
  126. bad_spaces = sorted(bad_spaces, key=attrgetter('diff'))
  127. worst = bad_spaces[0]
  128. if worst.diff <= 0:
  129. if worst.diff < virtual_diff:
  130. self.equipment.virtual_target_temperature = worst.temperature_target
  131. self.equipment.virtual_realtime_temperature = worst.realtime_temperature
  132. else:
  133. self.equipment.virtual_target_temperature = min(21.0, worst.temperature_target) + 0.5
  134. self.equipment.virtual_realtime_temperature = worst.realtime_temperature
  135. elif self.season == Season.heating:
  136. bad_spaces = sorted(bad_spaces, key=attrgetter('diff'), reverse=True)
  137. worst = bad_spaces[0]
  138. if worst.diff >= 0:
  139. if worst.diff > virtual_diff:
  140. self.equipment.virtual_target_temperature = worst.temperature_target
  141. self.equipment.virtual_realtime_temperature = worst.realtime_temperature
  142. else:
  143. self.equipment.virtual_target_temperature = max(27.0, worst.temperature_target) - 0.5
  144. self.equipment.virtual_realtime_temperature = worst.realtime_temperature
  145. return self.equipment.virtual_target_temperature, self.equipment.virtual_realtime_temperature
  146. async def run(self) -> None:
  147. await self.build_virtual_temperature()
  148. temperature_set, temperature_realtime = await self.rectify()
  149. await self.get_supply_air_flow_set(temperature_set, temperature_realtime)
  150. self.equipment.running_status = True
  151. class VAVControllerV3(VAVControllerV2):
  152. def __init__(self, vav_params: VAVBox, season: Season):
  153. super(VAVControllerV3, self).__init__(vav_params)
  154. self.season = season
  155. def get_valid_spaces(self) -> List:
  156. valid_spaces = list()
  157. for sp in self.equipment.spaces:
  158. if sp.realtime_temperature > 0.0 and sp.temperature_target > 22.0:
  159. valid_spaces.append(sp)
  160. return valid_spaces
  161. async def build_virtual_temperature(self) -> None:
  162. valid_spaces = self.get_valid_spaces()
  163. if not valid_spaces:
  164. virtual_realtime, virtual_target = np.NAN, np.NAN
  165. else:
  166. sorted_spaces = sorted(valid_spaces, key=lambda x: x.vav_temporary_update_time)
  167. if sorted_spaces[-1].vav_temporary_update_time > get_time_str(60 * 60 * 2, flag='ago'):
  168. virtual_realtime = sorted_spaces[-1].realtime_temperature
  169. virtual_target = sorted_spaces[-1].temperature_target
  170. else:
  171. virtual_realtime, virtual_target = 0.0, 0.0
  172. total_weight = 0.0
  173. for sp in valid_spaces:
  174. temp_weight = sp.vav_default_weight
  175. virtual_realtime += sp.realtime_temperature * temp_weight
  176. virtual_target += sp.temperature_target * temp_weight
  177. total_weight += temp_weight
  178. if total_weight == 0:
  179. for sp in valid_spaces:
  180. virtual_realtime += sp.realtime_temperature
  181. virtual_target += sp.temperature_target
  182. virtual_realtime /= len(valid_spaces)
  183. virtual_target /= len(valid_spaces)
  184. else:
  185. virtual_realtime /= total_weight
  186. virtual_target /= total_weight
  187. self.equipment.virtual_realtime_temperature = virtual_realtime
  188. self.equipment.virtual_target_temperature = virtual_target
  189. async def fetch_vav_control_params(project_id: str, equipment_id: str) -> Dict:
  190. async with AsyncClient() as client:
  191. duo_duo = Duoduo(client, project_id)
  192. platform = DataPlatformService(client, project_id)
  193. season = await duo_duo.get_season()
  194. served_spaces = await duo_duo.get_space_by_equipment(equipment_id)
  195. space_objects = []
  196. realtime_supply_air_temperature_list = []
  197. for sp in served_spaces:
  198. sp_id = sp.get('id')
  199. transfer = SpaceInfoService(client, project_id, sp_id)
  200. current_target = await transfer.get_current_temperature_target()
  201. realtime_temperature = await platform.get_realtime_temperature(sp_id)
  202. related_equipment = await transfer.get_equipment()
  203. equipment_objects = []
  204. for eq in related_equipment:
  205. if eq.get('category') == 'ACATFC':
  206. speed = await platform.get_fan_speed(eq.get('id'))
  207. temp_fcu_params = {'id': eq.get('id'), 'air_valve_speed': speed}
  208. fcu = FCU(**temp_fcu_params)
  209. equipment_objects.append(fcu)
  210. elif eq.get('category') == 'ACATAH':
  211. realtime_supply_air_temperature_list.append(
  212. await platform.get_realtime_supply_air_temperature(eq.get('id'))
  213. )
  214. temp_space_params = {
  215. 'id': sp_id,
  216. 'realtime_temperature': realtime_temperature,
  217. 'equipment': equipment_objects,
  218. 'temperature_target': current_target,
  219. 'diff': current_target - realtime_temperature
  220. }
  221. space = Space(**temp_space_params)
  222. space_objects.append(space)
  223. realtime_supply_air_temperature = np.array(realtime_supply_air_temperature_list).mean()
  224. realtime_supply_air_flow = await platform.get_realtime_supply_air_flow(equipment_id)
  225. lower_limit, upper_limit = await platform.get_air_flow_limit(equipment_id)
  226. vav_params = {
  227. 'id': equipment_id,
  228. 'spaces': space_objects,
  229. 'supply_air_temperature': realtime_supply_air_temperature,
  230. 'supply_air_flow': realtime_supply_air_flow,
  231. 'supply_air_flow_lower_limit': lower_limit,
  232. 'supply_air_flow_upper_limit': upper_limit,
  233. 'season': season
  234. }
  235. return vav_params
  236. @logger.catch()
  237. async def get_vav_control_v1(project: str, equipment_id: str) -> VAVBox:
  238. vav_params = await fetch_vav_control_params(project, equipment_id)
  239. vav = VAVBox(**vav_params)
  240. vav_controller = VAVController(vav)
  241. await vav_controller.run()
  242. regulated_vav = vav_controller.get_results()
  243. return regulated_vav
  244. @logger.catch()
  245. async def get_vav_control_v2(db: Session, project_id: str, equipment_id: str) -> VAVBox:
  246. vav_params = await fetch_vav_control_params(project_id, equipment_id)
  247. vav = VAVBox(**vav_params)
  248. weights = get_weights_by_vav(db, equipment_id)
  249. vav_controller = VAVControllerV2(vav, [SpaceWeight.from_orm(weight) for weight in weights], vav_params['season'])
  250. await vav_controller.run()
  251. regulated_vav = vav_controller.get_results()
  252. return regulated_vav
  253. @logger.catch()
  254. async def build_acatva_instructions(params: ACATVAInstructionsRequest) -> ACATVAInstructions:
  255. vav_params = VAVBox(
  256. spaces=params.spaces,
  257. supply_air_temperature=params.supply_air_temperature,
  258. supply_air_flow=params.supply_air_flow,
  259. supply_air_flow_lower_limit=params.supply_air_flow_lower_limit,
  260. supply_air_flow_upper_limit=params.supply_air_flow_upper_limit
  261. )
  262. controller = VAVControllerV3(vav_params=vav_params, season=Season(params.season))
  263. await controller.run()
  264. regulated_vav = controller.get_results()
  265. instructions = ACATVAInstructions(
  266. supply_air_flow_set=regulated_vav.supply_air_flow_set,
  267. virtual_realtime_temperature=regulated_vav.virtual_realtime_temperature,
  268. virtual_temperature_target_set=regulated_vav.virtual_target_temperature
  269. )
  270. return instructions