Heat supply system and heat supply control method
By setting up a heat source control unit and a water separator in the central heating system, the problem of uneven heat distribution in large areas is solved, and the use of heat and waste is maximized.
Patent Information
- Application Number
- CN202411620100.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-02-14
AI Technical Summary
The existing centralized heating system is difficult to effectively regulate the heat distribution in large areas, resulting in excess heat in some areas and lack of heat in others, which cannot maximize the use of heat.
By setting up multiple heat source control units in the heating system, the heat in the overheated pipeline and the water separation valve is used to transmit the heat from the overheated pipeline network to the poor heat network through the intermediate pipeline network, so as to realize the undirected connection between the pipeline networks. heat transfer.
The heat distribution regulation in large areas is achieved, which reduces heat waste and ensures maximum use of heat.
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Figure CN119436239A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of heating control, and in particular to a heating system and a heating control method. Background Art
[0002] Municipal centralized heating is a way of providing heat to various heat users in winter, such as homes, factories, office buildings, etc. The advantage of this heating method is that the heat output by the heat source can be distributed among multiple heat users, while meeting the needs of heat users while minimizing heat waste. Therefore, it has been used in many northern cities.
[0003] The heat source for heating is mainly waste heat from power plants or hot water from boiler rooms. After the heat output by these two heat sources is transported to the heat exchange station through the primary network, the heat is transferred to the secondary network in the heat exchange station and finally transported to the heat users. Since the area of centralized heating is often very large, and the range that a heat source can guarantee is limited, it is necessary to set up multiple heat sources in a larger heating area to ensure that as many areas as possible are covered. Due to the different heat source output capacity and heat demand in each area, there may be different heating conditions between multiple small areas in the same large area. Some small areas may have excess heat, while some small areas may have a lack of heat. If the heating pipe networks of multiple small areas are operated separately, there will be a large waste of heat. Therefore, CN108629444A proposes a distributed multi-area heating method and system based on a multi-agent control method to connect the pipe networks in multiple small areas and reduce heat waste.
[0004] However, the above patent can only transfer heat between two directly connected small areas. When the total heating area is large, resulting in two small areas with excess heat and heat deficiency not being directly connected, the existing patent cannot transfer heat. Summary of the invention
[0005] In view of the above-mentioned problems, the present invention is proposed.
[0006] Therefore, the present invention provides a heating system and a heating control method, which can solve the problems mentioned in the background technology.
[0007] To solve the above technical problems, the present invention provides the following technical solutions: a heating system, comprising: a plurality of heat source control units, for obtaining heat output data and heat load data of a heat source; each of the heat source control units is arranged in a heat source, a water distribution pipe is connected between the water supply pipes of two adjacent heat sources, and each of the water distribution pipes is provided with a water distribution valve, after the plurality of heat source control units communicate with each other, determine a heat surplus pipe network, a heat shortage pipe network and an intermediate pipe network, and form a heat distribution path along the directions of the heat surplus pipe network, the intermediate pipe network and the heat shortage pipe network, and after the water distribution valve on the heat distribution path is opened, the heat in the heat surplus pipe network is transferred to the heat shortage pipe network through the intermediate pipe network; and a heat exchange control unit, which is arranged in the intermediate pipe network, the heat source control unit in the intermediate pipe network obtains input heat data of the heat surplus pipe network and output heat data of the heat shortage pipe network, determines corresponding temperature adjustment data according to the input heat data and the output heat data, and the heat exchange control unit controls the opening of the control valve according to the temperature adjustment data.
[0008] As a preferred solution of the heating system described in the present invention, each of the water distribution pipes is provided with a temperature measuring unit and a flow meter, and the temperature measuring unit and the flow meter are respectively used to detect the temperature and flow of water in the corresponding water distribution pipes; the heat source control unit in the intermediate pipe network determines the input heat data according to the temperature and flow of water in the water distribution pipes connected between the intermediate pipe network and the heat surplus pipe network; the heat source control unit in the heat-deficient pipe network determines the output heat data according to the temperature and flow of water in the water distribution pipes connected between the intermediate pipe network and the heat-deficient pipe network.
[0009] As a preferred solution of the heating system described in the present invention, a heat exchange control unit is provided in the heat surplus pipe network. When the heat surplus pipe network transports heat to the intermediate pipe network through the water distribution pipe, the water temperature output by the heat source in the heat surplus pipe network increases, and at the same time, the heat exchange control unit in the heat surplus pipe network controls the opening of the control valve in the heat surplus pipe network to decrease.
[0010] As a preferred solution of the heating system described in the present invention, after the excess heat network inputs heat into the intermediate network, the temperature of the water in the water supply pipe in the intermediate network increases, so that the input heat data is greater than the output heat data, and the heat exchange control unit in the intermediate network controls the opening of the control valve in the intermediate network to decrease.
[0011] As a preferred solution of the heating system described in the present invention, wherein: the heat source control unit in the intermediate pipeline network controls the upstream water diversion valve on the water diversion pipe to be at a first opening degree, and the heat source control unit in the heat-deficient pipeline network controls the downstream water diversion valve on the water diversion pipe to be at a second opening degree, and the flow rate of the upstream water diversion valve at the first opening degree is the same as the flow rate of the downstream water diversion valve at the second opening degree.
[0012] As a preferred solution of the heating system described in the present invention, wherein: multiple heat source control units communicate with each other through a wireless network, and after multiple heat source control units send heat output data and heat load data of corresponding heat sources to other heat source control units, each heat source control unit determines a heat surplus network and a heat deficit network, and when the intermediate network connected between the heat surplus network and the heat deficit network is in a thermal balance state, the heat source control units in the heat surplus network, the intermediate network and the heat deficit network establish a communication connection to transfer heat.
[0013] As a preferred solution of the heating system described in the present invention, when the intermediate pipe network connected between the heat-surplus pipe network and the heat-deficient pipe network is also in a heat-surplus or heat-deficient state, heat is transferred between the pipe networks directly connected through the water distribution pipe.
[0014] To further solve the above technical problems, the present invention provides the following technical solutions: a heating control method, comprising: obtaining heat output data and heat load data of each heat source; determining a heat surplus network, a heat shortage network and an intermediate network according to the heat output data and heat load data of each of the heat sources, and forming a heat distribution path along the directions of the heat surplus network, the intermediate network and the heat shortage network; controlling the water diversion valve on the heat distribution path to open, and transferring the heat in the heat surplus network to the heat shortage network through the intermediate network; obtaining the input heat data of the heat surplus network and the output heat data of the heat shortage network; determining corresponding temperature adjustment data according to the input heat data and the output heat data; and controlling the opening of the control valve according to the temperature adjustment data.
[0015] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and wherein the processor implements the steps of the heating system as described above when executing the computer program.
[0016] A computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the heating system as described above.
[0017] The beneficial effects of the present invention are as follows: the present invention determines the pipe networks with excess heat and heat deficiency through communication between multiple heat source control units, and then transfers the heat of the pipe network with excess heat to the pipe network with heat deficiency through the intermediate pipe network, thereby realizing heat transfer between pipe networks that are not directly connected, and effectively ensuring the maximum use of heat. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.
[0019] Figure 1 This is a schematic diagram of the structure of the heating system proposed by the present invention;
[0020] Figure 2 This is a schematic diagram of the process flow in the heating system proposed by the present invention. DETAILED DESCRIPTION
[0021] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.
[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0023] Example 1, reference Figure 1 and Figure 2 , as an embodiment of the present invention, provides a heating system.
[0024] Multiple heat source control units, each of which is arranged in a heat source, and the heat source control unit is used to obtain heat output data and heat load data of the corresponding heat source. A water distribution pipe is connected between the water supply pipes of two adjacent heat sources, and each water distribution pipe is provided with a water distribution valve. After the multiple heat source control units communicate with each other, they determine the heat surplus pipe network, the heat shortage pipe network and the intermediate pipe network, and form a heat distribution path along the direction of the heat surplus pipe network, the intermediate pipe network and the heat shortage pipe network. After the water distribution valve on the heat distribution path is opened, the heat in the heat surplus pipe network is transmitted to the heat shortage pipe network through the intermediate pipe network;
[0025] The heat exchange control unit is arranged in the intermediate pipeline network. The heat source control unit in the intermediate pipeline network obtains the input heat data of the heat-surplus pipeline network and the output heat data of the heat-deficient pipeline network, determines the corresponding temperature adjustment data according to the input heat data and the output heat data, and the heat exchange control unit controls the opening of the control valve according to the temperature adjustment data.
[0026] For example, Figure 1 Taking the case shown as an example, heat source 1, heat exchange station 1 and the pipelines therebetween constitute heat exchange network 1, heat source 2, heat exchange station 2 and the pipelines therebetween constitute heat exchange network 2, heat source 3, heat exchange station 3 and the pipelines therebetween constitute heat exchange network 3, the water supply pipe of heat exchange network 1 and the water supply pipe of heat exchange network 2 are connected via water distribution pipe 1 100, and the water supply pipe of heat exchange network 2 and the water supply pipe of heat exchange network 3 are connected via water distribution pipe 2 200. Meanwhile, water distribution pipe 1 100 and water distribution pipe 2 200 are respectively provided with an upstream water distribution valve and a downstream water distribution valve, hereinafter referred to as water distribution valve 2 and water distribution valve 3. Water distribution valve 2 and water distribution valve 3 can adopt electromagnetic valves, and their opening and closing actions and opening degrees can be controlled more accurately.
[0027] In an embodiment of the present application, multiple heat source control units communicate with each other through a wireless network. After multiple heat source control units send heat output data and heat load data of corresponding heat sources to other heat source control units, each heat source control unit determines a heat surplus network and a heat deficit network. When the intermediate network connected between the heat surplus network and the heat deficit network is in a thermal balance state, the heat source control units in the heat surplus network, the intermediate network and the heat deficit network establish a communication connection to transfer heat.
[0028] During the communication process, heat source control unit 1, heat source control unit 2 and heat source control unit 3 send data in the form of radio to the surrounding at a fixed time point or time interval. These data include the heat output data and heat load data of the current heat source to reduce the communication energy consumption of each heat source control unit. After receiving the data, other heat source control units judge the heating status of each heating network. For each heating network, it can be determined as heat surplus, heat balance or heat shortage, where heat surplus means that the maximum heating capacity of the heat source is greater than the demand of the heat user, heat balance means that the maximum heating capacity of the heat source is equal to the demand of the heat user, and heat shortage means that the maximum heating capacity of the heat source is less than the demand of the heat user, resulting in a lower water temperature in the heat shortage network. After determining the heating status of each heating network, if the heating status calculated by all heat source control units is the same, each heat source control unit determines the connection path of the heat surplus network and the heat shortage network according to the connection relationship between the pre-stored networks, and at least one intermediate network will be included on the connection path.
[0029] In the embodiment of the present application, if the number of intermediate pipe networks is two or more, it is unlikely that these intermediate pipe networks are in a state of thermal equilibrium at the same time. When the intermediate pipe network connected between the heat surplus pipe network and the heat deficiency pipe network is also in a state of heat surplus or heat deficiency, heat transfer is performed between the pipe networks directly connected through the water distribution pipe. In other words, if any one of the intermediate pipe networks is in an opposite heating state to the heat surplus pipe network or the heat deficiency pipe network, that is, when the two heating pipe networks are in a state of heat surplus and heat deficiency respectively, the two heating pipe networks can directly transfer heat without transferring heat through the intermediate pipe network. Therefore, the present application is only for the case where there is only one intermediate pipe network and the intermediate pipe network is in a state of thermal equilibrium. In this case, it is necessary to transfer heat through the intermediate pipe network in a state of thermal equilibrium, and at this time, the connection path between the heat surplus pipe network, the intermediate pipe network and the heat deficiency pipe network is called a heat distribution path.
[0030] by Figure 1 For example, heating network 1 is a heat-surplus network, heating network 2 is an intermediate network, and heating network 3 is a heat-deficient network. When the heat distribution path is determined to be heating network 1 → heating network 2 → heating network 3, heat source control unit 2 located in heating network 2 will control water diversion valve 2 to open, and heat source control unit 3 located in heating network 3 will also control water diversion valve 3 to open, so that the water output from the water supply pipe of heat source 1 is diverted to the water supply pipe of heat source 2 through water diversion pipe 1 100, and at the same time, the water output from heat source 1 and the water in the water supply pipe of heat source 2 are mixed and then diverted to the water supply pipe of heat source 3 through water diversion pipe 2 200, thereby finally achieving the effect of increasing the water temperature in the water supply pipe of heat source 3.
[0031] It should be understood that water in the heating network will lose heat during its flow, causing the temperature of the water to gradually decrease. In order to avoid the situation where water in a heat-excess network cannot increase the temperature of the water in a heat-deficient network when flowing to a heat-deficient network, the effect of the length of the path on the water temperature must also be considered when determining the heat distribution path. The heat distribution path should only be selected after ensuring that the water can still heat the heat-deficient network after flowing through the heat distribution path.
[0032] Furthermore, a heat exchange control unit is also provided in the heat surplus pipe network. When the heat surplus pipe network transfers heat to the intermediate pipe network through the water distribution pipe, the water temperature output by the heat source in the heat surplus pipe network increases, and at the same time, the heat exchange control unit in the heat surplus pipe network controls the opening of the control valve in the heat surplus pipe network to decrease. Since the heat source 1 has a large heating margin, it is necessary to increase the temperature of the water in the water supply pipe to achieve the effect of quickly increasing the temperature of the water in the water supply pipe of the heat source 3. At this time, since the temperature of the water in the water distribution pipe 100 is the same as the water temperature entering the heat exchange station 1, the heat exchange station 1 needs to reduce the opening of the control valve in the secondary network to keep the temperature of the secondary network relatively stable, so that the temperature of the heat user will not increase due to the increase in the water temperature in the primary network.
[0033] Correspondingly, after the heat surplus network inputs heat into the intermediate network, the temperature of the water in the water supply pipe in the intermediate network increases, making the input heat data greater than the output heat data, and the heat exchange control unit in the intermediate network controls the opening of the control valve in the intermediate network to decrease. Since the water with a higher temperature output from heat source 1 and the water with a relatively lower temperature in the water supply pipe of heat source 2 are mixed, the temperature of the mixed water will be lower than the water temperature output from heat source 1, but higher than the water temperature output from heat source 2, which will also cause the water temperature in heat exchange station 2 to be higher. Similar to heat exchange station 1, it is also necessary to reduce the opening of the control valve of the secondary network in heat exchange station 2 to minimize the impact on the temperature of the heat user. Unlike heat exchange network 1, heat exchange network 2 has not only heat input, but also heat output. Therefore, in order to accurately control the opening of the control valve in heat exchange station 2, it is necessary to accurately calculate the change in water temperature when heat input and heat output exist at the same time. Therefore, in an embodiment of the present application, each water distribution pipe is provided with a temperature measuring unit and a flow meter, which are respectively used to detect the temperature and flow of water in the corresponding water distribution pipe. The heat source control unit in the intermediate pipe network determines the input heat data according to the temperature and flow of water in the water distribution pipe connected between the intermediate pipe network and the heat surplus pipe network, and the heat source control unit in the heat-deficient pipe network determines the output heat data according to the temperature and flow of water in the water distribution pipe connected between the intermediate pipe network and the heat-deficient pipe network.
[0034] In the above embodiment, the temperature measuring unit and flow meter set on the water distribution pipe 100 are respectively called temperature measuring unit 2 and flow meter 2, and the temperature measuring unit and flow meter set on the water distribution pipe 200 are respectively called temperature measuring unit 3 and flow meter 3. After measuring the temperature and flow of water in the water distribution pipe 100 by the temperature measuring unit 2 and flow meter 2, the input heat data per unit time can be calculated, and after measuring the temperature and flow of water in the water distribution pipe 200 by the temperature measuring unit 3 and flow meter 3, the output heat data per unit time can be calculated. The difference between the input heat data and the output heat data is the temperature adjustment data. The larger the temperature adjustment data, the more heat is retained in the water supply pipe of the heat source 2 after input and output. At this time, the reduction amount of the opening of the control valve in the heat exchange station 2 also needs to be correspondingly larger.
[0035] Furthermore, the heat source control unit in the intermediate pipeline network controls the upstream water diversion valve on the water diversion pipe to be at a first opening degree, and the heat source control unit in the heat-deficient pipeline network controls the downstream water diversion valve on the water diversion pipe to be at a second opening degree, and the flow rate of the upstream water diversion valve at the first opening degree is the same as the flow rate of the downstream water diversion valve at the second opening degree.
[0036] Since the water supply pipe of the second heat source needs to input and output hot water at the same time, in order to ensure the stability of the flow of the water supply pipe and the return pipe of the second heat source, the present application ensures that the flow of water input and output to the water supply pipe of the second heat source is the same by controlling the opening of the two water diverter valves. It should be understood that the diameters of the first water diverter pipe 100 and the second water diverter pipe 200 in the present application may not be the same. If they are not the same, then the openings of the water diverter valves on the two water diverter pipes must be different while ensuring the same flow. If the diameters of the two water diverter pipes are the same, then the flow of the two will be the same when the openings of the water diverter valves are the same.
[0037] The present application also provides a heating control method, which includes the following steps:
[0038] Obtain heat output data and heat load data for each heat source;
[0039] According to the heat output data and heat load data of each heat source, a heat surplus pipe network, a heat shortage pipe network and an intermediate pipe network are determined, and a heat distribution path is formed along the directions of the heat surplus pipe network, the intermediate pipe network and the heat shortage pipe network;
[0040] Control the water distribution valve on the heat distribution path to open, and transfer the heat in the heat-excess pipe network to the heat-deficient pipe network through the intermediate pipe network;
[0041] Obtain the input heat data of the heat surplus network and the output heat data of the heat shortage network;
[0042] Determine corresponding temperature adjustment data according to input heat data and output heat data;
[0043] The opening of the control valve is controlled according to the temperature adjustment data. Embodiment 2 is an embodiment of the present invention, which provides a heating control method, including: obtaining the heat output data and heat load data of each heat source; determining the heat surplus pipe network, the heat shortage pipe network and the intermediate pipe network according to the heat output data and heat load data of each of the heat sources, and forming a heat distribution path along the direction of the heat surplus pipe network, the intermediate pipe network and the heat shortage pipe network; controlling the water distribution valve on the heat distribution path to open, and transferring the heat in the heat surplus pipe network to the heat shortage pipe network through the intermediate pipe network; obtaining the input heat data of the heat surplus pipe network and the output heat data of the heat shortage pipe network; determining the corresponding temperature adjustment data according to the input heat data and the output heat data; and controlling the opening of the control valve according to the temperature adjustment data.
[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.
Claims
1. A heating system, characterized in that: include: A plurality of heat source control units are used to obtain heat output data and heat load data of the heat source; each of the heat source control units is arranged in a heat source, a water distribution pipe is connected between the water supply pipes of two adjacent heat sources, and each of the water distribution pipes is provided with a water distribution valve. After the plurality of heat source control units communicate with each other, a heat surplus pipe network, a heat shortage pipe network and an intermediate pipe network are determined, and a heat distribution path is formed along the direction of the heat surplus pipe network, the intermediate pipe network and the heat shortage pipe network. After the water distribution valve on the heat distribution path is opened, the heat in the heat surplus pipe network is transferred to the heat shortage pipe network through the intermediate pipe network; as well as, A heat exchange control unit is arranged in the intermediate pipeline network. The heat source control unit in the intermediate pipeline network obtains input heat data of the heat-surplus pipeline network and output heat data of the heat-deficient pipeline network, determines corresponding temperature adjustment data according to the input heat data and the output heat data, and the heat exchange control unit controls the opening of the control valve according to the temperature adjustment data.
2. The heating system according to claim 1, characterized in that: Each of the water distribution pipes is provided with a temperature measuring unit and a flow meter, and the temperature measuring unit and the flow meter are respectively used to detect the temperature and flow of water in the corresponding water distribution pipe. The heat source control unit in the intermediate pipe network determines the input heat data according to the temperature and flow of water in the water distribution pipe connected between the intermediate pipe network and the heat-surplus pipe network. The heat source control unit in the heat-deficient pipe network determines the output heat data according to the temperature and flow of water in the water distribution pipe connected between the intermediate pipe network and the heat-deficient pipe network.
3. The heating system according to claim 2, characterized in that: A heat exchange control unit is provided in the heat surplus pipe network. When the heat surplus pipe network transports heat to the intermediate pipe network through the water distribution pipe, the water temperature output by the heat source in the heat surplus pipe network increases. At the same time, the heat exchange control unit in the heat surplus pipe network controls the opening of the control valve in the heat surplus pipe network to decrease.
4. The heating system according to claim 3, characterized in that: After the excess heat network inputs heat into the intermediate network, the temperature of the water in the water supply pipe in the intermediate network increases, making the input heat data greater than the output heat data, and the heat exchange control unit in the intermediate network controls the opening of the control valve in the intermediate network to decrease.
5. The heating system according to claim 4, characterized in that: The heat source control unit in the intermediate pipeline network controls the upstream water diversion valve on the water diversion pipe to be at a first opening degree, and the heat source control unit in the heat-deficient pipeline network controls the downstream water diversion valve on the water diversion pipe to be at a second opening degree. The flow rate of the upstream water diversion valve at the first opening degree is the same as the flow rate of the downstream water diversion valve at the second opening degree.
6. The heating system according to claim 5, characterized in that: The multiple heat source control units communicate with each other through a wireless network. After the multiple heat source control units send the heat output data and heat load data of the corresponding heat sources to other heat source control units, each heat source control unit determines a heat surplus network and a heat deficit network. When the intermediate network connected between the heat surplus network and the heat deficit network is in a thermal balance state, the heat source control units in the heat surplus network, the intermediate network and the heat deficit network establish a communication connection to transfer heat.
7. The heating system according to claim 6, characterized in that: When the intermediate pipe network connected between the heat-excess pipe network and the heat-deficient pipe network is also in a heat-excess or heat-deficient state, heat is transferred between the pipe networks directly connected through the water distribution pipe.
8. A heating control method using the heating system according to any one of claims 1 to 7, characterized in that: include: Obtain heat output data and heat load data for each heat source; Determine a heat surplus pipe network, a heat shortage pipe network and an intermediate pipe network according to the heat output data and heat load data of each heat source, and form a heat distribution path along the directions of the heat surplus pipe network, the intermediate pipe network and the heat shortage pipe network; Controlling the water distribution valve on the heat distribution path to open, so as to transfer the heat in the heat-excess pipe network to the heat-deficient pipe network through the intermediate pipe network; Acquiring input heat data of the heat-excess pipe network and output heat data of the heat-deficient pipe network; Determine corresponding temperature adjustment data according to the input heat data and the output heat data; The opening degree of the control valve is controlled according to the temperature adjustment data.
9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the heating control method according to claim 8 are implemented.
10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the heating control method according to claim 8 are implemented.
Citation Information
Patent Citations
Distributed type multi-area heat supply method and system based on multi-agent control method
CN108629444A