CN112902275A - Electric heating device based on LoRa technology and system regulation and control strategy - Google Patents
Electric heating device based on LoRa technology and system regulation and control strategy Download PDFInfo
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- 238000005485 electric heating Methods 0.000 title claims abstract description 125
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D13/00—Electric heating systems
- F24D13/02—Electric heating systems solely using resistance heating, e.g. underfloor heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
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Abstract
The invention discloses an electric heating device and a system regulation and control strategy based on a LoRa technology, the electric heating device comprises a LoRa communication module, an MCU, an infrared detection module, an electric energy detection control module, a display screen, keys and an electrothermal film heating unit, wherein the LoRa communication module and the MCU form a device control circuit to receive and execute regulation and control instructions and process and send device working state information, the infrared detection module and the electric energy detection control module form a detection and execution circuit which is connected with the control circuit and used for detecting indoor temperature and analyzing indoor number, detecting power consumption information of the electrothermal film heating unit and executing the regulation and control instructions, the display screen and the keys are used as input and output equipment of the electric heating device, and the display screen displays the working state of the device. According to the invention, the working state of the electrothermal film heating unit is intelligently regulated and controlled according to the power consumption data of the electrothermal film heating unit, the indoor temperature, the number of people in the room, the room activity reservation, the control center instruction and the manual regulation instruction information, the operation is flexible, and the energy consumption is saved.
Description
Technical Field
The invention relates to the field of LoRa application, in particular to an electric heating device based on a LoRa technology and a system regulation and control strategy.
Background
In the era of interconnection and intercommunication among everything, the access modes of the internet of things are generally two types, namely wired and wireless. The wired mode has large limitation and high cost, the wireless mode mainly comprises short-distance communication technologies such as Wi-Fi, Bluetooth, ZigBee and the like, and the communication technology is limited by distance and is easy to interfere; the long-distance communication technology based on the mobile cellular network has high power consumption and cost. The LoRa is a remote wireless communication technology based on a spread spectrum technology, one LoRa gateway can be accessed to tens of thousands of LoRa nodes, different spread spectrum sequence LoRa terminals can not interfere with each other even if using the same frequency to simultaneously transmit data, and can simultaneously transmit, receive and process data of a plurality of nodes, the distance of the wireless communication is enlarged by 3-5 times compared with that of the traditional wireless communication under the same power consumption condition, and the wireless communication system has the advantages of large capacity, good anti-interference performance, long distance, low power consumption, low cost and the like.
Domestic electric heating equipment in the market is mainly in a manual adjustment mode, and the number of household electric heating equipment is not large, and the household electric heating equipment is easy to operate. In the places with large-area heating demand, such as colleges and universities, hospitals, enterprises, markets, office buildings and the like, the large-scale electric heating is popularized, and one problem is the distributed group control of the electric heating devices. Solutions to this problem are currently in a stage of development. Some enterprises and scientific research units have provided wireless electric heating control schemes based on Wi-Fi and ZigBee technologies, and in the application of the wireless electric heating control scheme, one wireless terminal needs to be configured in one room to several rooms, so that the wiring construction cost is high, and the wireless electric heating control scheme is basically equal to a wired control mode. Moreover, the communication frequency band is in the wireless internet access frequency band commonly used by people, and the problems of channel congestion, signal interference and the like are easy to occur, so that the power consumption and the delay are increased, and the control effect is not ideal. The existing regulation and control strategy is that a temperature regulation plan is basically input into a control center management platform, the temperature is reduced or increased in batches at regular time, a mobile terminal needs manual regulation of a user, and the operation cost is high. However, the actual activity situation of each room is random and variable, and the regulation and control mode which cannot automatically change along with the change of the room activity is not intelligent and humanized.
Therefore, it is necessary to design a new wireless control scheme for electric heating, and on the basis of centralized control, the sensing decision can be realized according to local conditions, and the room temperature can be regulated and controlled automatically. The intelligent, energy-saving and humanized concepts are fully embodied.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art, provides an electric heating device based on the LoRa technology and a system regulation and control strategy, has simple and reasonable structure and low production and installation cost, solves the problem of distributed group control of large-area electric heating, cancels unnecessary network wiring engineering, can realize the centralized control of the electric heating devices of the whole building, district or garden by only arranging one LoRa gateway in a control center, and can be used by only installing the electric heating devices in place in each room and connecting a socket.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an electric heating installation based on loRa technique, includes loRa gateway, electric heating installation is connected with the loRa gateway with wireless mode, be equipped with the ethernet module of being connected with cloud management platform server in the loRa gateway, carry out state monitoring and remote management to electric heating installation through local control center or mobile terminal login cloud management platform.
Further, the loRa gateway includes first loRa communication module and first MCU, first loRa communication module and first MCU are connected, the ethernet module is connected with first MCU.
Further, electric heating device includes second loRa communication module and second MCU, second loRa communication module and second MCU connect.
Further, the electric heating device comprises an electric heating film heating unit and an electric energy detection control module, the electric energy detection control module is connected with the electric heating film heating unit, the electric energy detection control module is connected with the second MCU, the electric energy detection control module comprises an electric energy metering circuit and an electric energy control circuit, the electric energy metering circuit adopts a resistance sampling method, the electric energy control circuit adopts a solid-state relay and is used for detecting power consumption parameters and power of the electric heating film heating unit, and the working state of the electric heating film heating unit is regulated and controlled according to system instructions.
Further, the electric heating device further comprises an infrared detection module, the infrared detection module is connected with the second MCU, and the infrared detection module comprises an infrared temperature sensor and a pyroelectric infrared sensor and is respectively used for detecting indoor real-time temperature and analyzing the number of indoor people.
Furthermore, the electric heating device further comprises a display screen and a key, the display screen and the key are respectively connected with the second MCU, the display screen displays the current working state information of the electric heating device, and the key is used as input equipment for manually adjusting the working state of the electric heating device.
A system regulation and control strategy of an electric heating device based on an LoRa technology comprises the following steps: local centralized control, cloud remote control, single-machine off-team control and multi-machine combined control.
Local centralized control: the local centralized control is that the control center performs centralized control on all the electric heating devices, the control center has the highest authority control authority, and all the managed electric heating devices must report working state information to the control center at regular time;
the single-machine off-team control mode and the multi-machine combined control mode are entered, the application is applied to the control center, the rationality of the application is judged by the control center system, and all electric heating devices which pass the application need to feed back the decision and action made each time to the control center system;
the control center finds that a single electric heating device works abnormally, immediately starts the single-machine control right of the electric heating device with the highest authority, and sends an alarm to a manager and remotely cuts off the line power supply of the electric heating devices on the floor if the control center refuses to obey;
the local control center receives reasonable management operation from the cloud platform, and in order to ensure that all the electric heating devices which are managed in the local control center safely operate, the local control center system has the highest instruction review permission, and the local control center has the right to reject passing through abnormal instructions from the cloud;
the system comprises a local control center, a cloud platform, a local control center, a plurality of remote control units and a plurality of remote control units, wherein the local control center is responsible for managing information of all electric heating devices, buildings, rooms and equipment in the system and providing architecture data for cloud platform management and control, the local control center is responsible for monitoring the buildings and the room equipment in real time, executing a temperature regulation plan in batches, setting temperature upper and lower limits of the electric heating devices in batches for protection, setting temperature return differences in batches, automatically correcting indoor temperature differences, analyzing equipment operation data of each day, learning regional temperature regulation rules, reasonably adjusting indoor temperature default values according to local temperature of each day, providing various reports by the system, recording single machine electricity consumption for 24 hours, indoor and outdoor temperature changes, single building energy consumption and total;
cloud remote control: the cloud remote control is a remote management mode based on a cloud service platform, the control authority of the cloud remote control is only second to that of a local control center, and the cloud remote control has all functions of the local control center, but all operation instructions receive the examination of the local control center, the cloud platform can log in at any computer end webpage or at a mobile end APP, a user logged in at the cloud end is divided into a common user, a second-level user, a first-level user and a super user according to an authorized management area, the common user only has the management authority of a room where the common user is located, the second-level user has the monomer building management authority, the first-level user has the administration authority of a district, the super user has all system authorities, the super user has the authority distribution capacity, and all users receive the examination and management of a system administrator of the local control center;
single-machine off-team control: the single-machine off-team control is applicable to single machines with abnormal small rooms and abnormal work, the single-machine off-team control is that the regional activity rule of only one electric heating device in a small room is abnormal or a single machine in a work marshalling is abnormal, an off-team control strategy is applied, if the activity rule in the region is fixed, the electric heating device preferentially obeys a centralized regulation and control instruction, if the activity rule in the region is detected to be abnormal in a same ratio, the electric heating device applies for off-team to enter a single-machine autonomous mode to a control center aiming at special conditions in individual regions under a group control mode, such as the condition that the activities of personnel on duty/temporary levy on weekend/off duty time are still not stopped or the activities in the region are not normally generated, if the internal abnormality of the electric heating device is applied for off-team to enter a maintenance mode, if the electric heating device receives manual regulation, the electric heating device applies, the single machine autonomously detects and processes real-time activity information and autonomously decides, but a decision result is reported to a control center every time, if the occurrence of activity in an area is detected, the single machine enters an autonomous mode, the temperature is raised in advance according to the change trend of the activity position, if the activity position in the area is fixed, the single machine adjusts the heating power to maintain the temperature required by the activity to be constant, if the activity position in the area is changed and disappears, the electric heating device enters a step-type cooling mode until the lower limit of the temperature is reached, the control center is waited to issue a centralized regulation and control instruction and returns to a local centralized control mode, the single machine manual mode and the activity temperature need to be individually adjusted in advance by a user at a mobile terminal or is adjusted in real time and manually by pressing a key of the electric heating device, the electric heating device applies for departing from a single, until the temperature reaches the lower limit, waiting for the control center to issue a centralized regulation and control instruction, and returning to a local centralized control mode;
multi-machine combined control: the multi-machine combined control is suitable for large rooms and public areas, all electric heating devices in the same area communicate with each other to establish work marshalling, on the premise of receiving centralized regulation and control of a control center, if the activity rules of the area where the electric heating devices are detected are relatively fixed, the work marshalling preferentially obeys a centralized regulation and control instruction, if the activity rules in the area are detected to be abnormal in a same ratio, the work marshalling applies a control strategy entering a multi-machine combined autonomous mode to the control center, the multi-machine combined autonomous mode is characterized in that each single machine in the work marshalling participates in detection and processing of real-time activity information, each single machine directly carries out inter-group communication and common decision through an LoRa module without passing through an LoRa gateway, but each decision result is reported to the control center, if the activity in the area appears, the work marshalling predicts the single machine which is, if the activity position in the region is fixed, the work marshalling selects the nearest single machine as the main force to be put into work, if the activity position in the region is changed and then fixed again, the work marshalling reselects the main force to be put into work, if the activity position in the region is changed and then disappears, the work marshalling integrally enters the step-type cooling until the temperature reaches the lower limit, the control center is waited to issue a centralized regulation and control instruction, and the local centralized control mode is returned.
Compared with the prior art, the invention has the following beneficial effects: the electric heating device and the system regulation and control strategy based on the LoRa technology realize perception and decision according to local conditions and autonomously regulate and control room temperature on the basis of centralized control, fully embody the intelligent, energy-saving and humanized concepts, and are applied to places with large-scale heating requirements, such as universities, hospitals, enterprises, markets, office buildings and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a block diagram of an electric heating system based on LoRa according to an embodiment of the present invention;
fig. 2 is a block diagram of an LoRa gateway structure according to an embodiment of the present invention;
fig. 3 is a block diagram of an electric heating device based on LoRa according to an embodiment of the present invention;
fig. 4 is a flow chart of a single off-line control strategy for an electric heating system based on LoRa according to an embodiment of the present invention;
fig. 5 is a flowchart of a multi-machine combined control of an electric heating system regulation and control strategy based on LoRa according to an embodiment of the present invention.
Reference numerals:
1. an LoRa gateway; 2. an electric heating device; 3. a local control center; 4. and (4) a cloud management platform.
Detailed Description
The invention is further described with reference to the following drawings and detailed description:
referring to fig. 1-5, an electric heating device based on the LoRa technology according to an embodiment of the present invention includes a LoRa gateway 1, an electric heating device 2, the electric heating device 2 is wirelessly connected to the LoRa gateway 1, an ethernet module connected to a cloud management platform 4 server is provided in the LoRa gateway 1, the electric heating device 2 is monitored and remotely managed by logging in the cloud management platform 4 through a local control center 3 or a mobile terminal, the LoRa gateway 1 includes a first LoRa communication module and a first MCU, the first LoRa communication module is connected to the first MCU, the ethernet module is connected to the first MCU, the electric heating device 2 includes a second LoRa communication module and a second MCU, the second LoRa communication module is connected to the second MCU, the electric heating device 2 includes an electric heating film heating unit and an electric energy detection control module, the electric energy detection control module is connected to the electric heating film heating unit, the electric energy detection control module is connected with the second MCU, the electric energy detection control module comprises an electric energy metering circuit and an electric energy control circuit, the electric energy metering circuit adopts a resistance sampling method, the electric energy control circuit adopts a solid-state relay, the utility model is used for detecting the power consumption parameter of the electric heating film heating unit, power, adjust and control the electric heating film heating unit operating condition according to the system instruction, electric heating device 2 still includes infrared detection module, infrared detection module is connected with second MCU, infrared detection module includes infrared temperature sensor and pyroelectric infrared sensor, be used for detecting indoor real-time temperature and the indoor number of analysis respectively, electric heating device 2 still includes display screen and button module, display screen and button are connected with second MCU respectively, display screen display electric heating device 2 current operating condition information, the button is as the input device of the 2 operating condition of manual regulation electric heating device.
A system regulation and control strategy of an electric heating device based on an LoRa technology comprises the following steps: local centralized control, cloud remote control, single-machine off-team control and multi-machine combined control.
Local centralized control: the local centralized control is that the control center performs centralized control on all the electric heating devices, the control center has the highest authority control authority, and all the electric heating devices which are managed must report working state information to the control center at regular time;
the single-machine off-team control mode and the multi-machine combined control mode are entered, the application is applied to the control center, the rationality of the application is judged by the control center system, and all electric heating devices which pass the application need to feed back the decision and action made each time to the control center system;
the control center finds that a single electric heating device works abnormally, immediately starts the single-machine control right of the electric heating device with the highest authority, and sends an alarm to a manager and remotely cuts off the line power supply of the electric heating devices on the floor if the control center refuses to obey;
the local control center receives reasonable management operation from the cloud platform, and in order to ensure that all the electric heating devices which are managed in the local control center safely operate, the local control center system has the highest instruction review permission, and the local control center has the right to reject passing through abnormal instructions from the cloud;
the system comprises a local control center, a cloud platform, a local control center, a plurality of remote control units and a plurality of remote control units, wherein the local control center is responsible for managing information of all electric heating devices, buildings, rooms and equipment in the system and providing architecture data for cloud platform management and control, the local control center is responsible for monitoring the buildings and the room equipment in real time, executing a temperature regulation plan in batches, setting temperature upper and lower limits of the electric heating devices in batches for protection, setting temperature return differences in batches, automatically correcting indoor temperature differences, analyzing equipment operation data of each day, learning regional temperature regulation rules, reasonably adjusting indoor temperature default values according to local temperature of each day, providing various reports by the system, recording single machine electricity consumption for 24 hours, indoor and outdoor temperature changes, single building energy consumption and total;
cloud remote control: the cloud remote control is a remote management mode based on a cloud service platform, the control authority of the cloud remote control is only second to that of a local control center and has all functions of the local control center, but all operation instructions receive the examination of the local control center, the cloud platform can log in at any computer end webpage and also can log in at a mobile end APP, a user logged in at the cloud end is divided into a common user, a second-level user, a first-level user and a super user according to an authorized management area, the common user only has the management authority of a room where the common user is located, the second-level user has the monomer building management authority, the first-level user has the management authority of a district, the super user has all system authorities, the super user has the authority distribution capacity, and all users receive the examination and management of a system administrator of the local control;
single-machine off-team control: the single-machine off-team control is applicable to single machines with abnormal small rooms and work, the single-machine off-team control is that the regional activity rule of only one electric heating device in a small room is abnormal or a single machine in a work marshalling is abnormal, an off-team control strategy is applied, if the activity rule in the region is fixed, the electric heating device preferentially obeys a centralized regulation and control instruction, if the activity rule in the region is detected to be abnormal in a same ratio, the electric heating device applies for off-team to enter a single-machine autonomous mode to a control center aiming at special conditions in a group control mode, such as the condition that the activities of people on weekends are on duty/temporarily require the field/off duty time are still not stopped, or the activities in the region are not normally generated, the electric heating device applies for off-team to enter the single-machine autonomous mode if the internal abnormality of the electric heating device is applied for off-team to enter, the single machine autonomously detects and processes real-time activity information and autonomously decides, but a decision result is reported to a control center every time, if the occurrence of activity in an area is detected, the single machine enters an autonomous mode, the temperature is raised in advance according to the change trend of the activity position, if the activity position in the area is fixed, the single machine adjusts the heating power to maintain the temperature required by the activity to be constant, if the activity position in the area is changed and disappears, the electric heating device enters a step-type cooling mode until the lower limit of the temperature is reached, the control center is waited to issue a centralized regulation and control instruction, the local centralized control mode is returned, the single machine manual mode is adopted, the activity temperature needs to be adjusted individually, a user appoints in advance or adjusts the activity temperature in real time and remotely at a mobile terminal, or presses a key of the electric heating device to perform real, until the temperature reaches the lower limit, waiting for the control center to issue a centralized regulation and control instruction, and returning to a local centralized control mode;
multi-machine combined control: the multi-machine combined control is suitable for large rooms and public areas, all electric heating devices in the same area communicate with each other to establish work marshalling, on the premise of receiving centralized regulation and control of a control center, if the activity rule of the area where the electric heating devices are detected is relatively fixed, the work marshalling preferentially obeys a centralized regulation and control instruction, if the activity rule in the area is detected to be abnormal in the same ratio, the work marshalling applies a control strategy of entering a multi-machine combined autonomous mode to the control center, the multi-machine combined autonomous mode is realized, each single machine in the work marshalling participates in detection and processing of real-time activity information, each single machine passes through a LoRa module and does not directly carry out in-group communication and common decision through a LoRa gateway, but each decision result is reported to the control center, if the activity in the area appears, the work marshalling predicts the, if the activity position in the region is fixed, the work marshalling selects the nearest single machine as the main force to be put into work, if the activity position in the region is changed and then fixed again, the work marshalling reselects the main force to be put into work, if the activity position in the region is changed and then disappears, the work marshalling integrally enters the step-type cooling until the temperature reaches the lower limit, the control center is waited to issue a centralized regulation and control instruction, and the local centralized control mode is returned.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides an electric heating installation based on loRa technique, its characterized in that, includes loRa gateway, electric heating installation is connected with the loRa gateway with wireless mode, be equipped with the ethernet module of being connected with cloud management platform server in the loRa gateway, carry out state monitoring and remote management to electric heating installation through local control center or removal end login cloud management platform.
2. The electric heating device based on the LoRa technology of claim 1, wherein the LoRa gateway comprises a first LoRa communication module and a first MCU, the first LoRa communication module is connected with the first MCU, and the ethernet module is connected with the first MCU.
3. The electric heating device based on the LoRa technology of claim 1, wherein the electric heating device comprises a second LoRa communication module and a second MCU, and the second LoRa communication module is connected with the second MCU.
4. The electric heating device based on the LoRa technology of claim 1, wherein the electric heating device comprises an electrothermal film heating unit and an electric energy detection control module, the electric energy detection control module is connected with the electrothermal film heating unit, the electric energy detection control module is connected with a second MCU, the electric energy detection control module comprises an electric energy metering circuit and an electric energy control circuit, the electric energy metering circuit adopts a resistance sampling method, the electric energy control circuit adopts a solid state relay for detecting power consumption parameters and power of the electrothermal film heating unit, and the working state of the electrothermal film heating unit is regulated and controlled according to a system command.
5. The electric heating device based on the LoRa technology of claim 1, further comprising an infrared detection module, wherein the infrared detection module is connected with the second MCU, and the infrared detection module comprises an infrared temperature sensor and a pyroelectric infrared sensor, and is respectively used for detecting indoor real-time temperature and analyzing the number of indoor people.
6. The electric heating device based on the LoRa technology of claim 1, further comprising a display screen and a key, wherein the display screen and the key are respectively connected with the second MCU, the display screen displays the current working state information of the electric heating device, and the key is used as an input device for manually adjusting the working state of the electric heating device.
7. A system regulation and control strategy of an electric heating device based on an LoRa technology comprises the following steps: local centralized control, cloud remote control, single-machine off-team control and multi-machine combined control.
Local centralized control: the local centralized control is that the control center performs centralized control on all the electric heating devices, the control center has the highest authority control authority, and all the managed electric heating devices must report working state information to the control center at regular time;
the single-machine off-team control mode and the multi-machine combined control mode are entered, the application is applied to the control center, the rationality of the application is judged by the control center system, and all electric heating devices which pass the application need to feed back the decision and action made each time to the control center system;
the control center finds that a single electric heating device works abnormally, immediately starts the single-machine control right of the electric heating device with the highest authority, and sends an alarm to a manager and remotely cuts off the line power supply of the electric heating devices on the floor if the control center refuses to obey;
the local control center receives reasonable management operation from the cloud platform, and in order to ensure that all the electric heating devices which are managed in the local control center safely operate, the local control center system has the highest instruction review permission, and the local control center has the right to reject passing through abnormal instructions from the cloud;
the system comprises a local control center, a cloud platform, a local control center, a plurality of remote control units and a plurality of remote control units, wherein the local control center is responsible for managing information of all electric heating devices, buildings, rooms and equipment in the system and providing architecture data for cloud platform management and control, the local control center is responsible for monitoring the buildings and the room equipment in real time, executing a temperature regulation plan in batches, setting temperature upper and lower limits of the electric heating devices in batches for protection, setting temperature return differences in batches, automatically correcting indoor temperature differences, analyzing equipment operation data of each day, learning regional temperature regulation rules, reasonably adjusting indoor temperature default values according to local temperature of each day, providing various reports by the system, recording single machine electricity consumption for 24 hours, indoor and outdoor temperature changes, single building energy consumption and total;
cloud remote control: the cloud remote control is a remote management mode based on a cloud service platform, the control authority of the cloud remote control is only second to that of a local control center, and the cloud remote control has all functions of the local control center, but all operation instructions receive the examination of the local control center, the cloud platform can log in at any computer end webpage or at a mobile end APP, a user logged in at the cloud end is divided into a common user, a second-level user, a first-level user and a super user according to an authorized management area, the common user only has the management authority of a room where the common user is located, the second-level user has the monomer building management authority, the first-level user has the administration authority of a district, the super user has all system authorities, the super user has the authority distribution capacity, and all users receive the examination and management of a system administrator of the local control center;
single-machine off-team control: the single-machine off-team control is applicable to single machines with abnormal small rooms and abnormal work, the single-machine off-team control is that the regional activity rule of only one electric heating device in a small room is abnormal or a single machine in a work marshalling is abnormal, an off-team control strategy is applied, if the activity rule in the region is fixed, the electric heating device preferentially obeys a centralized regulation and control instruction, if the activity rule in the region is detected to be abnormal in a same ratio, the electric heating device applies for off-team to enter a single-machine autonomous mode to a control center aiming at special conditions in individual regions under a group control mode, such as the condition that the activities of personnel on duty/temporary levy on weekend/off duty time are still not stopped or the activities in the region are not normally generated, if the internal abnormality of the electric heating device is applied for off-team to enter a maintenance mode, if the electric heating device receives manual regulation, the electric heating device applies, the single machine autonomously detects and processes real-time activity information and autonomously decides, but a decision result is reported to a control center every time, if the occurrence of activity in an area is detected, the single machine enters an autonomous mode, the temperature is raised in advance according to the change trend of the activity position, if the activity position in the area is fixed, the single machine adjusts the heating power to maintain the temperature required by the activity to be constant, if the activity position in the area is changed and disappears, the electric heating device enters a step-type cooling mode until the lower limit of the temperature is reached, the control center is waited to issue a centralized regulation and control instruction and returns to a local centralized control mode, the single machine manual mode and the activity temperature need to be individually adjusted in advance by a user at a mobile terminal or is adjusted in real time and manually by pressing a key of the electric heating device, the electric heating device applies for departing from a single, until the temperature reaches the lower limit, waiting for the control center to issue a centralized regulation and control instruction, and returning to a local centralized control mode;
multi-machine combined control: the multi-machine combined control is suitable for large rooms and public areas, all electric heating devices in the same area communicate with each other to establish work marshalling, on the premise of receiving centralized regulation and control of a control center, if the activity rules of the area where the electric heating devices are detected are relatively fixed, the work marshalling preferentially obeys a centralized regulation and control instruction, if the activity rules in the area are detected to be abnormal in a same ratio, the work marshalling applies a control strategy entering a multi-machine combined autonomous mode to the control center, the multi-machine combined autonomous mode is characterized in that each single machine in the work marshalling participates in detection and processing of real-time activity information, each single machine directly carries out inter-group communication and common decision through an LoRa module without passing through an LoRa gateway, but each decision result is reported to the control center, if the activity in the area appears, the work marshalling predicts the single machine which is, if the activity position in the region is fixed, the work marshalling selects the nearest single machine as the main force to be put into work, if the activity position in the region is changed and then fixed again, the work marshalling reselects the main force to be put into work, if the activity position in the region is changed and then disappears, the work marshalling integrally enters the step-type cooling until the temperature reaches the lower limit, the control center is waited to issue a centralized regulation and control instruction, and the local centralized control mode is returned.
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