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