KR102419795B1 - Diagnostic and control method of heating system for using virtual sensor - Google Patents

Abstract

The present invention relates to a system and a method capable of diagnosing a heating system and controlling the heating system according to the diagnosis result. Specifically, the system comprises: a first flow path (10) through which heated water introduced from the outside circulates; a heat exchanger (100) positioned adjacent to a path of the first flow path; a second flow path (20), wherein a fluid used for heating or water heating is returned and introduced, a part of the second flow path is disposed adjacent to the first flow path and the heat exchanger, and the fluid circulates to be used for heating or water heating after the fluid is reheated through the heat exchanger; temperature sensors (S1 to S4) installed in at least one selected from among the first flow path, the heat exchanger, and the second flow path to sense the temperature of the installed part; virtual sensors (V1 to V10) for learning using accumulated operating data while operating the heating system capable of diagnosis and control using the virtual sensor, and sensing the temperature of at least a portion in which the temperature sensor is installed; and an alarm unit outputting an alarm to a manager when the difference between the temperature sensed by the virtual sensor and the temperature sensed by the temperature sensing is greater than or equal to a threshold value. According to the present invention, heating costs can be saved.

Description

A heating system capable of diagnosis and control using a virtual sensor and a diagnostic control method using the same {Diagnostic and control method of heating system for using virtual sensor}

The present invention relates to a system and method capable of diagnosing a heating system and controlling the heating system according to the diagnosis result, and more particularly, detecting errors in physical sensors included in the heating system using a virtual sensor and thus To a heating system capable of diagnosis and control using a virtual sensor capable of maintaining/repairing/supervising physical sensors, and a diagnostic control method using the same.

Patent Document 001 discloses a data generation module that constructs a virtual power plant to generate a plurality of learning data, a data processing module that analyzes and transforms the learning data and loads the converted data, and predicts failure from the data loaded in the data processing module. And a failure prediction/diagnosis module and the failure prediction/diagnosis module that performs learning for diagnosis and predicts and diagnoses the occurrence of a failure by judging the state of the power generation facility of the power plant from one or more real-time sensor data collected from the power plant based on the learning result and an information display module for displaying the prediction and diagnosis results of the diagnostic module and additional information of the corresponding power generation facility, wherein the data generation module models each of the plurality of power generation facilities of the power plant to build the virtual power plant Modeling unit Power plant failure prediction and diagnosis, comprising: a simulation unit for starting the virtual power plant based on one of a normal start-up scenario and a failure start-up scenario; and a data extraction unit for extracting virtual sensor data from the virtual power plant and generating the learning data The system is disclosed.

Patent Document 002 discloses a step in which the electronic control unit of the continuous damping control device measures three acceleration sensor values for estimating the motion characteristics in the vertical direction of the vehicle, and the electronic control unit of the continuous damping control device receives the longitudinal acceleration signal. estimating the vertical force of the tire using the method, the electronic control unit of the continuous damping control device receiving roll acceleration and pitch acceleration from the electronic control unit of the electronic driving safety device, the electronic control unit of the continuous damping control device estimating the roll and pitch acceleration of the vehicle using the roll and pitch acceleration and longitudinal acceleration signals, the electronic control unit of the continuous damping control device using the values of the three acceleration sensors and the roll and pitch acceleration to calculate a residual error of the continuous damping control device, and diagnosing a failure when the residual error of the continuous damping control device is out of a set error tolerance is disclosed.

Patent Document 003 is a hybrid diagnostic system for diagnosing a document processing system, wherein a system controller that transmits a control command issued from the document processing system, and control data and monitoring data of the document processing system in response to the control command, and environment/ transmit data including operational state data, at least one system sensor and ground current of the document processing system, sensor signals, actuator signals and the data are analyzed and features comprising useful diagnostic information are extracted, at least one a virtual sensor of and a mapping generator and the mapping generator for acquiring and storing the control commands, the data and the characteristics, converting them into discrete maps corresponding to the operation of the document processing system, and transmitting the discrete maps in an appropriate order; Disclosed is a hybrid diagnostic system including a diagnostic system that analyzes the discrete event and evaluates the state of the document processing system based on the discrete event, and an output device that outputs the evaluation result of the diagnostic system.

Patent Document 004 discloses a method of identifying a trend of engine operation of an engine having a plurality of sensors responding to engine operation, the process of obtaining outputs from at least some sensors during engine operation, the process of obtaining ambient flight condition data, and the Disclosed is a method consisting of a process of generating normalized engine trend parameters using engine sensor data and ambient flight condition data.

Korean Patent Publication No. 10-2118966 (published on 2020.06.04) Korean Patent Publication No. 10-2009-0119488 (published on November 19, 2009) Japanese Patent Publication No. 4878674 (published on Dec. 09, 2011) Japanese Patent Application Laid-Open No. 2002-180851 (published on June 26, 2002)

The present invention relates to a heating system capable of diagnosis and control using a virtual sensor and a diagnostic control method using the same.

The present invention relates to a heating system capable of diagnosis and control using a virtual sensor and a diagnostic control method using the same for solving the problems of the prior inventions, and the present invention relates to a heating system capable of diagnosis and control using a virtual sensor, a first flow path 10 through which the incoming heated water circulates; a heat exchanger 100 positioned adjacent to the path of the first flow path; A second flow path through which the fluid used for heating or hot water supply is returned and introduced, a portion is disposed adjacent to the first flow path and the heat exchanger, and the fluid is reheated through the heat exchanger and then circulated to be used for heating or hot water supply ( 20); a temperature sensor (S1 to S4) installed in at least one selected from the first flow path, the heat exchanger, and the second flow path to sense a temperature of the installed portion; a virtual sensor (V1 to V10) for learning using operation data accumulated while operating a heating system capable of diagnosis and control using the virtual sensor, and for sensing the temperature of at least a portion where the temperature sensor is installed; and an alarm unit for outputting an alarm to a manager when a difference between the temperature sensed by the virtual sensor and the temperature sensed by the temperature sensing is greater than or equal to a threshold value; is made including

The present invention relates to a heating system capable of diagnosis and control using a virtual sensor and a diagnostic control method using the same, wherein the temperature sensor is installed at least on the side where the fluid is returned before being reheated on the second flow path.

The present invention relates to a heating system capable of diagnosis and control using a virtual sensor and a diagnostic control method using the same. Includes temperature difference information with the virtual sensor.

The present invention relates to a heating system capable of diagnosis and control using a virtual sensor and a diagnostic control method using the same, wherein the temperature sensor is installed on the second flow path, and is located at the front end and the rear end, respectively, based on the heat exchanger. a flow control valve 200 installed at a rear end of the heat exchanger in the path of the first flow path to control a supply amount of heated water; and a control unit for adjusting the degree of opening and closing of the flow control valve according to sensing information of temperature sensors installed at the front and rear ends, respectively, based on the heat exchanger on the second flow path. includes

The present invention relates to a heating system capable of diagnosis and control using a virtual sensor and a diagnostic control method using the same, wherein the virtual sensor senses the degree of opening and closing of the flow control valve, and the alarm unit is set by the control unit. If the difference between the degree of opening and closing of the flow control valve and the degree of opening and closing of the flow control valve sensed by the virtual sensor is equal to or greater than a threshold, an alarm is output to the manager.

The present invention relates to a heating system capable of diagnosis and control using a virtual sensor and a diagnostic control method using the same. pressure sensors (P1, P2) for sensing the pressure of each portion If the difference between the pressure sensed by the sensors V6 and V7 and the pressure sensed by the pressure sensors P1 and P2 is equal to or greater than a threshold, the pipe forming the second flow path 20 or the heat exchanger 100 to the manager Outputs an alarm indicating that cleaning or replacement is required.

The present invention relates to a heating system capable of diagnosis and control using a virtual sensor and a diagnostic control method using the same, comprising: pumps (310, 320) installed in the second flow path (20) to transfer the fluid; and a controller for controlling the operation of the pumps 310 and 320, wherein the virtual sensors V8 and V9 are transferred through the rotational speed of the pumps 310 and 320 and the pumps 310 and 320. The flow rate is sensed, and the alarm unit is the rotation speed of the pump (310, 320) set by the control unit, the target flow rate calculated through the rotation speed, and the pump (310, V9) sensed by the virtual sensor (V8, V9), If the difference between the rotational speed of 320 and the flow rate transferred through the pumps 310 and 320 is greater than a threshold, an alarm is output to the manager.

The present invention relates to a heating system capable of diagnosis and control using a virtual sensor and a diagnostic control method using the same, wherein the virtual sensor (V10) senses the temperature of the heat exchanger (100), and the alarm unit, By comparing the heat exchange efficiency when the heat exchanger 100 is in an optimal state, and the heat exchange efficiency of the heat exchanger 100 at the sensing time calculated through the virtual sensors V1, V2, V3, V4, and V10, If the difference in heat exchange efficiency is greater than or equal to a threshold, an alarm is output to the manager that repair or replacement of the heat exchanger 100 is necessary.

The present invention relates to a heating system capable of diagnosis and control using a virtual sensor and a diagnostic control method using the same. a preliminary heat exchanger 400 installed in parallel with the heat exchanger 100 so as not to operate because the heating water or the fluid is not supplied when the 100) operates normally; a first opening/closing valve 410 installed between the first flow path 10 and the preliminary heat exchanger 400 to determine a supply direction of the heating water; a second opening/closing valve 420 installed between the second flow path 20 and the preliminary heat exchanger 400 to determine a supply direction of the fluid; and operating the first on-off valve 410 and the second on-off valve 420 according to the alarm output of the alarm unit, so that the heating water and the fluid flow to the preliminary heat exchanger 400 , the first opening and closing valve and a control unit for controlling whether the valve 410 and the second opening/closing valve 420 are opened or closed. By controlling the first on-off valve 410 and the second on-off valve 420 , the heated water and the fluid flow to the preliminary heat exchanger 400 .

The present invention relates to a heating system capable of diagnosis and control using a virtual sensor and a diagnostic control method using the same, and a data storage in which operation data measured while operating a heating system capable of diagnosis and control using the virtual sensor is stored Including;, the virtual sensors are continuously learned through the data stored in the data storage unit.

The present invention relates to a heating system capable of diagnosis and control using a virtual sensor and a diagnostic control method using the same. If this is the case, the step of outputting an alarm from the alarm unit to the manager; includes.

The present invention relates to a heating system capable of diagnosis and control using a virtual sensor and a program stored in a computer-readable recording medium for implementing a diagnostic control method using the same.

The present invention senses the temperature of the same part using a virtual sensor implemented in a deep learning method using a temperature sensor and operation data, and compares the temperature measured by the temperature sensor with the temperature measured by the virtual sensor to cause malfunction of the temperature sensor. Alternatively, since it is determined whether there is a malfunction, there is an advantageous effect in the maintenance and repair of the heating system.

The present invention has the effect of saving heating costs by enabling accurate control of the flow rate control valve through temperature sensing using a virtual sensor.

The present invention senses information such as a pressure sensor, fuel efficiency sensing of a heat exchanger, and operation efficiency of a pump in addition to a temperature sensor using a virtual sensor, and compares the physical sensing or command value with the value sensed by the virtual sensor, thereby providing a heating system There is an effect that can facilitate the maintenance / repair of various devices included in the.

The present invention has the effect of effectively diagnosing and controlling the heating system because continuous learning is made through the operation data that the virtual sensor continuously accumulates.

The present invention has the effect of more effectively diagnosing and controlling the heating system because the virtual sensor learns using only data prior to a predetermined period of time based on the sensing time among operation data that are continuously accumulated.

In the present invention, since a spare heat exchanger is installed in addition to the heat exchanger, and the spare heat exchanger is used when the heat exchanger fails, there is an effect that can replace the failure of the heat exchanger without a heating gap period.

1 is a schematic diagram of a heating system capable of diagnosis and control using a virtual sensor.
2 is a schematic diagram of a state in which an alarm is output to a heating system capable of diagnosis and control using a virtual sensor.
3 is a schematic diagram of a state in which a preliminary heat exchanger is added to a heating system capable of diagnosis and control using a virtual sensor.

Hereinafter, the most preferred embodiment of the present invention will be described in detail in order to be described in detail enough to be easily practiced by those of ordinary skill in the art to which the present invention pertains.

The numbers cited in the examples below are not limited only to the objects of reference, and may be applied to all examples. An object that exhibits the same purpose and effect as the configuration presented in the embodiment corresponds to an equivalent replacement object. The higher-level concept presented in the examples includes sub-concept objects that are not described.

(Example 1-1) In a heating system capable of diagnosis and control using a virtual sensor of the present invention, a first flow path 10 through which heating water flowing in from the outside circulates, and a heat exchange positioned adjacent to the path of the first flow path The fluid used for heating or hot water supply is returned and introduced into the machine 100 , and a portion is disposed adjacent to the first flow path 10 and the heat exchanger 100 , and the fluid is passed through the heat exchanger 100 . A temperature sensor that is installed in at least one selected from the second flow path 20, the first flow path, the heat exchanger, and the second flow path that circulates to be used for heating or hot water supply after being reheated to sense the temperature of the installed part (S1, S2, S3, S4), a virtual sensor (V1) that learns using the operation data accumulated while operating a heating system capable of diagnosis and control using the virtual sensor, and senses the temperature of at least the part where the temperature sensor is installed , V2, V3, V4) and an alarm unit for outputting an alarm to the manager when the difference between the temperature sensed by the virtual sensor and the temperature sensed by the temperature sensing is equal to or greater than a threshold value.

Among the above-described configurations, the virtual sensors V1, V2, V3, and V4 and the first flow passage 10, the second flow passage 20 and the heat exchanger 100 excluding the alarm unit are devices provided in the conventional heating system. admit. Briefly describing the above-described components, heated water heated by district heating and supplied circulates in the first flow path 10 . In the second flow path 10 , a fluid used for heating or hot water supply of a residential building (eg, an apartment or an apartment house such as an officetel) circulates. A heat exchanger 100 is disposed in a portion where the first flow passage 10 and the second flow passage 20 are disposed adjacent to each other so that heat exchange occurs between the first flow passage 10 and the second flow passage 20 . Through this process, the temperature of the inlet end of the first flow path 10 (before the heat exchanger 100 on the circulation path) is higher than the temperature of the discharge end (after the heat exchanger 100 on the circulation path), and vice versa. The temperature of the inlet end of the second flow passage 20 (before the heat exchanger 100 on the circulation path) is lower than the temperature of the outlet end (after the heat exchanger 100 on the circulation path).

The temperature sensors S1 , S2 , S3 , and S4 are installed in at least one device selected from the first flow path 10 , the second flow path 20 , and the heat exchanger 100 , and sense the temperature of the installed portion. The temperature sensors S1, S2, S3, and S4 may be implemented in various ways and are physically existing devices. As an example of a method of installing the temperature sensors S1 , S2 , S3 , S4 , a predetermined socket is installed on the first flow path 10 , the second flow path 20 , or the heat exchanger 100 , and each socket There may be embodiments in which a physical temperature sensor is mounted.

The virtual sensors V1, V2, V3, and V4 are virtual sensing devices as their names suggest, and serve to measure state information of the first flow path 10 , the second flow path 20 , and the heat exchanger 100 . In the present invention, the virtual sensors V1, V2, V3, and V4 may be implemented by learning using data accumulated in the process of operating the heating system. More specifically, in operating the heating system, various types of operation data may be accumulated. Here, the operation data refers to the temperature for each position of the first flow path 10 of the heating water supplied to the first flow path 10 , the pressure for each position of the first flow path 10 , the heat exchange efficiency of the heat exchanger 100 , and the heat exchanger ( It may be information such as the temperature of 100 , the temperature for each location of the flow path supplied to the second flow path 20 , and the pressure for each location of the second flow path 20 . The present invention can implement a virtual sensor by utilizing such operational data as learning data of deep learning.

In the case of the physical temperature sensors S1, S2, S3, and S4, they may not operate or malfunction due to various reasons (elapsed service life, external circumstances, etc.). If the temperature sensor (S1, S2, S3, S4) does not operate and the temperature sensor value at the location where the temperature sensor (S1, S2, S3, S4) is installed is not received, it is simply the temperature sensor (S1, S2, S3) of the corresponding part. , S4) can be replaced or repaired, but in case of malfunction, it is not easy to determine whether the temperature sensors S1, S2, S3, and S4 are normal or malfunctioning. In preparation for such a situation, the alarm unit compares the temperature value sensed by the virtual sensors (V1, V2, V3, V4) with the temperature value sensed by the temperature sensors (S1, S2, S3, S4), and sensed by each of the two sensors. When the difference in temperature values exceeds a threshold, an alarm can be output to a user or a designated device. The heat exchanger 100 may be a plate heat exchanger.

(Embodiment 1-2) In Embodiment 1-1, the heating system and method capable of diagnosis and control using a virtual sensor of the present invention, wherein the temperature sensors S1, S2, S3, and S4 include at least the second fluid It is installed on the return side before reheating on the flow path.

Among the positions where the temperature sensors S1 , S2 , S3 , and S4 are installed, the most important position in the present invention is the secondary side, that is, a part installed in the second flow path 20 . This is because a more accurate rate is calculated only when the actual state information on the part where heating or hot water is supplied is accurately measured, and accordingly, the heating water required for the heating or hot water supply temperature is controlled. Therefore, the alarm unit compares the temperature sensed by each of the temperature sensors S1 and S2 and the virtual sensors V1 and V2 installed on the side of the second flow path 20 to determine whether the temperature sensors S1 and S2 are malfunctioning or malfunctioning. Thus, when it is determined that replacement or repair of the temperature sensors S1 and S2 is necessary, the user may be notified of the fact.

(Example 1-3) In Example 1-1, the heating system and method capable of diagnosis and control using a virtual sensor of the present invention, the alarm output from the alarm unit to the manager is a temperature sensor ( It includes installation location information of S1, S2, S3, and S4 and temperature difference information between the virtual sensors V1, V2, V3, and V4.

In the alarm output from the alarm unit to the manager, the temperature difference above the threshold may be information on the installation location of the temperature sensors S1, S2, S3, S4 and the temperature difference information between the virtual sensors V1, V2, V3, and V4. This information included in the alarm can clearly inform the manager which temperature sensor needs to be replaced or repaired.

(Example 1-4) In Example 1-1, the heating system and method capable of diagnosis and control using a virtual sensor of the present invention, wherein the temperature sensors S1, S2, S3, and S4 include a thermocouple, A heating system capable of diagnosis and control using a virtual sensor including at least one selected from a resistance sensor, a thermistor, a temperature label, a liquid thermometer, a bimetal, and an infrared sensor.

The temperature sensors S1, S2, S3, and S4 used in the present invention may be implemented as various types of temperature sensors. The temperature sensor can be largely divided into a contact type and a non-contact type. In the case of the contact type, there may be a thermocouple, a resistance sensor, a thermistor, a temperature label, a liquid thermometer, and a bimetal. In the case of a non-contact type, there may be an infrared sensor.

(Example 1-5) In Example 1-1, in the heating system and method capable of diagnosis and control using a virtual sensor of the present invention, an additional temperature sensor is provided on the first flow path 10 or the second flow path 20 installed, and the virtual sensor can also sense the temperature of the part to which the temperature sensor is added.

When the pipe constituting the first flow path 10 and the second flow path 20 is extended, heat loss of the heated water and the fluid may occur as much as the pipe is extended. In the present invention, in addition to the temperature sensors S1, S2, S3, and S4 shown in the drawings, a temperature sensor is installed on the first flow path 10 and the second flow path 20 to sense the temperature of the installed portion, and a virtual sensor In addition, by sensing the temperature of the portion where the temperature sensor is installed, thermal management on the first flow passage 10 and the second flow passage 20 can be more accurately performed.

(Example 1-6) In Example 1-1, the heating system and method capable of diagnosis and control using a virtual sensor of the present invention, the alarm output from the alarm unit is a schematic drawing of the heating system of the present invention and can be printed together.

The alarm output from the alarm unit of the present invention described above may be in the form of a simple text output to the administrator's mobile phone or electronic terminal. However, in this form, it is often difficult for the manager to intuitively understand which position the temperature sensors (S1, S2, S3, S4) malfunction. A schematic drawing may be output, and a memo may be output to the temperature sensor S2 that is malfunctioning or malfunctioning on the drawing. That is, the alarm unit outputs an alarm using the GUI interface so that the manager can more intuitively know which temperature sensor S2 needs to be repaired or replaced.

(Embodiment 2-1) In the heating system capable of diagnosis and control using a virtual sensor according to the present invention, in Embodiment 1-3, the temperature sensors S1, S2, S3, and S4 include the second flow path Doedoe installed on (20), each installed at the front end and the rear end with respect to the heat exchanger, and installed at the rear end of the heat exchanger in the path of the first flow path, the flow rate control valve 200 to control the supply amount of heated water and a control unit for adjusting the degree of opening and closing of the flow control valve according to sensing information of the temperature sensors S1 and S2 respectively installed at the front and rear ends of the heat exchanger on the second flow path.

The controller controls the degree of opening and closing of the flow control valve 200 according to the temperature information sensed by the temperature sensors S1 and S2 and the target temperature set by the user. For example, when the target temperature set by the user is 45 degrees Celsius, the temperature information sensed by the temperature sensor S1 is 36 degrees Celsius, and the temperature information sensed by the temperature sensor S2 is 40 degrees Celsius, the control unit controls the flow rate The degree of opening and closing of the control valve 200 may be set to 20%. As another example, when the target temperature set by the user is 45 degrees Celsius, the temperature information sensed by the temperature sensor S1 is 38 degrees Celsius, and the temperature information sensed by the temperature sensor is 40 degrees, the control unit controls the flow control valve 200 . The degree of supply of heating water in the first flow path 10 may be controlled by setting the opening/closing degree of the valve to 18%, which is lower than 20%. That is, the control unit applies different degrees of opening and closing of the flow control valve 200 according to the temperature information sensed by each of the temperature sensors S1 and S2 and the target temperature information set by the user, such as excessive charges. can prevent

(Example 2-2) In the heating system capable of diagnosis and control using a virtual sensor according to the present invention, in Example 1-3, the virtual sensor V5 is installed in the flow control valve 200, The degree of opening/closing of the flow control valve 200 is sensed, and the alarm unit is the degree of opening/closing of the flow control valve 200 set by the control unit and the degree of opening/closing 200 of the flow control valve sensed by the virtual sensor. If the difference is greater than the threshold, an alarm is output to the manager.

In the present invention, the virtual sensor V5 is not limited to simply sensing the temperature of a specific portion of the first flow path 10 or the second flow path 20 , but may be used to sense the degree of opening and closing of the flow control valve 200 . . In the drawing, the virtual sensor V5 is shown in the vicinity of the flow control valve 200, but since the virtual sensor V5 is implemented as a kind of program, it is not installed in the vicinity of the flow control valve 200 as shown in the drawing. . The alarm unit compares the opening/closing degree of the flow control valve 200 sensed by the virtual sensor (V5) with the command value of the opening/closing degree of the flow control valve 200 set by the control unit. 200), an alarm can be output to the administrator that there is an error. As in the above-described embodiments 1-3, the alarm output from the alarm unit may include information on which flow control valve 200 has an abnormality and information on what the error value is.

(Embodiment 2-3) In the heating system capable of diagnosis and control using a virtual sensor according to the present invention, in Embodiment 1-3, the front end of the second flow path 20 and the It includes; a pressure sensor (P1, P2) that is installed at the rear end and senses the pressure of the installed portion, respectively, and the virtual sensor (V6, V7) senses the pressure at the position where the pressure sensor (P1, P2) is installed, , the alarm unit, if the difference between the pressure sensed by the virtual sensors (V6, V7) and the pressure sensed by the pressure sensors (P1, P2) is equal to or greater than a threshold, the pipe forming the second flow path 20 to the manager or the An alarm indicating that cleaning or replacement of the heat exchanger 100 is required is output.

When the heating system capable of diagnosis and control using the virtual sensor according to the present invention is used for a long period of time, foreign substances may be caught in the second flow path 20 or the flow path formed inside the heat exchanger 100 , or fouling of the heat exchanger 100 may occur. Ringing may occur. In this case, the supply pressure of the fluid is increased, the flow rate itself is reduced, and it is necessary to additionally open the above-described flow control valve 200 as the flow rate is reduced, which in turn leads to an increase in the heating rate.

In general, in order to prevent the above situation, a pressure sensor is installed in each specific part of the pipe forming the flow path. The present invention also installs pressure sensors P1 and P2 at the front and rear ends of the heat exchanger 100 on the second flow path 20, respectively, and according to the values measured by the pressure sensors P1 and P2, the second It is determined whether the flow path 20 or the heat exchanger 100 is cleaned. However, since the pressure sensors P1 and P2 are also physical devices, they may be used for a long time or may malfunction due to a specific external factor, thereby outputting an erroneous pressure value. The present invention senses the pressure at the location where the pressure sensors P1 and P2 are installed in the virtual sensors V6 and V7, and the alarm unit uses the pressure values sensed by the virtual sensors V6 and V7 and the pressure sensors P1 and P2. When the difference between the sensed pressure values exceeds the threshold, an alarm may be output to the manager that cleaning or repair of the pipe forming the heat exchanger 100 or the second flow path 20 is required. Separately, if the alarm unit determines that cleaning of the heat exchanger or the pipe forming the second flow path 20 is necessary, an alarm is output to the manager and chemicals required for cleaning the pipe are sent to the second flow path 20 . By flowing, the chemical and fluid mixed fluid circulates in the second pipe 20, so that foreign substances inside the pipe are automatically removed.

(Example 3-1) In Example 1-1, the heating system capable of diagnosis and control using a virtual sensor according to the present invention is installed in the second flow path 20 and the pump 310 transfers the fluid. , 320); and a controller for controlling the operation of the pumps 310 and 320, wherein the virtual sensors V8 and V9 are transferred through the rotational speed of the pumps 310 and 320 and the pumps 310 and 320. The flow rate is sensed, and the alarm unit is the rotation speed of the pump (310, 320) set by the control unit, the target flow rate calculated through the rotation speed, and the pump (310, V9) sensed by the virtual sensor (V8, V9), If the difference between the rotational speed of 320 and the flow rate transferred through the pumps 310 and 320 is greater than a threshold, an alarm is output to the manager.

The pumps 310 and 320 are installed on the second flow path 20 to circulate the fluid inside the second flow path 20 . The operation of the pumps 310 and 320 is controlled by the control unit, and the control unit may control the rotation speed of the pumps 310 and 320 by applying a rotation speed command value to the pumps 310 and 320 . However, if the pumps 310 and 320 themselves are also used for a long period of time, a difference between the rotation speed command value applied from the control unit and the actual rotation speed may occur, and the pumps 310 and 320 may not recognize the difference in rotation speed itself. Therefore, the present invention senses the rotational speed of the actual pumps 310 and 320 and the transfer amount of the fluid according to the rotational speed in each of the virtual sensors V8 and V9, and the rotational speed and the rotational speed of the sensed pumps 310 and 320. If the difference between the transfer amount of fluid according to the flow rate and the rotation speed command value of the pumps 310 and 320 applied by the control unit and the transfer amount of fluid calculated accordingly is equal to or greater than the threshold, the alarm unit notifies the manager of the abnormality of the pumps 310 and 320 can be output, so that a follow-up action is made to the pumps 310 and 320 .

(Example 4-1) In the heating system capable of diagnosis and control using a virtual sensor according to the present invention, in Example 1-1, the virtual sensor V10 senses the temperature of the heat exchanger 100 and , the alarm unit, the heat exchange efficiency when the heat exchanger 100 is in an optimal state, and the heat exchanger 100 at the sensing time calculated through the virtual sensors V1, V2, V3, V4, V10. By comparing the heat exchange efficiency, if the difference in heat exchange efficiency is equal to or greater than a threshold value, an alarm is output to the manager indicating that repair or replacement of the heat exchanger 100 is necessary.

Similar to the above-described embodiments, the virtual sensor V10 may sense the temperature of the heat exchanger 100 . In the present invention, heat exchange efficiency when the heat exchanger 100 is in an optimal state can be stored. The heat exchange efficiency is a value calculated according to the heating degree and flow rate of the fluid at the secondary side (second flow path side) compared to the temperature and flow rate of the heated water supplied from the primary side (the first flow path side). The heat exchanger 100 may also decrease the heat exchange efficiency depending on the period of use, and the present invention calculates the heat exchange efficiency of the heat exchanger 100 at the sensing time point through the virtual sensors V1, V2, V3, V4, and V10. , when it is determined that the calculated heat exchange efficiency of the heat exchanger 100 is lower than a threshold value or more than the heat exchange efficiency when the heat exchanger 100 is in an optimal state, the alarm unit outputs an alarm to the manager to replace the heat exchanger 100 Or you can have it repaired.

(Example 4-2) A heating system capable of diagnosis and control using a virtual sensor according to the present invention is installed so that the first flow path 10 and the second flow path 20 are connected to each other in Example 4-1 However, when the heat exchanger 100 operates normally, the preliminary heat exchanger 400 and the first flow path 10 are installed in parallel with the heat exchanger 100 so as not to operate because the heating water or the fluid is not supplied. ) and the first on/off valve 410 installed between the preliminary heat exchanger 400 to determine the supply direction of the heating water, the second flow path 20 and the preliminary heat exchanger 400 installed between the A second on-off valve 420 that determines the supply direction of the fluid and the first on-off valve 410 and the second on-off valve 420 are operated according to the alarm output of the alarm, so that the heated water and the fluid to flow to the preliminary heat exchanger 400 .

In the present invention, when it is determined that repair or replacement of the heat exchanger 100 is necessary (when an alarm is output from the alarm unit), the control unit controls the first on/off valve 410 and the second on/off valve 420 to control the heating water and By changing the path of the fluid, the preliminary heat exchanger 400 is used. Through this method, it is possible to heat or supply hot water without a blank period even in a repair or replacement situation of the heat exchanger 100 .

(Example 5-1) The heating system capable of diagnosis and control using a virtual sensor according to the present invention is measured while operating the heating system capable of diagnosis and control using the virtual sensor in Example 1-1 A data storage unit for storing data is included, and the virtual sensor is continuously learned through data in the storage unit.

The heating system capable of diagnosis and control using virtual sensors (V1 to V10) according to the present invention is continuously exposed to different environments, and macroscopically, it is caused by various factors (eg global warming, climate change due to regional development). ) The environment itself may change over time. Therefore, the virtual sensors (V1 to V10) need to cope with changes in the environment to which the heating system is exposed through continuous learning, and various data according to the operation of the heating system are stored in the data storage unit, and the virtual sensors (V1 to V10) V10) can continuously learn through various data updated in the data storage unit, and can more accurately sense the state of various devices included in the heating system of the present invention.

(Example 5-2) In the heating system capable of diagnosis and control using a virtual sensor according to the present invention, in Example 5-1, the virtual sensor senses the heating system operation data stored in the data storage unit. It is possible to continuously learn using only the operation data stored within a predetermined period from the time point.

In terms of the accuracy of the operation data, among the operation data of the heating system stored in the data storage unit, the most recent data at the current time may be more accurate to apply the virtual sensors V1 to V10 to the heating system. Accordingly, in the present invention, in learning the virtual sensors V1 to V10, the virtual sensor V1 using only predetermined data at the current time (sensing time of the virtual sensor) among the operating data of the heating system stored in the data storage unit. ~V10) can be learned, and through this, the virtual sensors V1 to V10 can more accurately sense the states of various devices included in the heating system.

(Example 5-3) In the heating system capable of diagnosis and control using a virtual sensor according to the present invention, in Example 5-1, the data storage unit receives and stores weather information from the outside, and stores the received weather information. Including virtual sensors can be trained.

As described above, the heating system according to the present invention may be greatly affected by weather information. For example, when it rains or snows, heating efficiency may decrease, so the data storage unit of the present invention receives and stores weather information from the outside (eg, the Meteorological Administration), and the virtual sensors V1 to V10 are the data storage units. It is learned through the operation data of the heating system stored in the and weather information, it is possible to sense the state of various devices included in the heating system.

(Example 5-4) In the heating system capable of diagnosis and control using a virtual sensor according to the present invention, in Example 5-1, the alarm unit uses the operation data stored in the data storage unit, Estimate the expected life of the device, and output the predicted life information to the user.

By analyzing the operation data stored in the data storage unit in real time, the lifespan of various devices included in the heating system of the present invention can be predicted. This life expectancy prediction can be more accurate as operation data is accumulated while the heating system is operated. Outputs an alarm containing information indicating that it is below, so that the device can take appropriate action, such as replacement or repair.

(Example 6-1) In the heating system capable of diagnosis and control using a virtual sensor according to the present invention, in Example 2-1, it is determined whether to compensate for outdoor air according to the number of floors to which the heating system is applied, and the flow control valve The degree of opening and closing of 200 is controlled differently.

The outdoor environment varies depending on the season. In general, this outdoor temperature is more affected by the lower floors, and the higher the upper floors, the more affected. Therefore, when the number of floors of a building to which a heating system is applied is a low-floor part, the controller of the present invention may change the degree of opening and closing of the flow control valve 200 in consideration of the outdoor temperature according to the season. For example, when it is winter and the number of floors of a building to which a heating system is applied is a low-floor part, the controller may open the flow control valve 200 more than other conditions, so that appropriate heating is performed for the number of floors.

(Example 7-1) The diagnostic control method of a heating system capable of diagnosis and control using a virtual sensor according to the present invention is performed through a heating system capable of diagnosis and control using the above-described virtual sensor, and is included in the heating system and outputting an alarm from the alarm unit to an administrator when the difference between the state values of the devices to be used and the state values of the devices sensed by the virtual sensor is equal to or greater than a threshold value. In addition, the present invention includes a program stored in a computer-readable recording medium for implementing a diagnostic control method using a heating system capable of diagnosis and control using a virtual sensor.

10: 1st Euro 20: 2nd Euro
100: heat exchanger 200: flow control valve
310, 320: pump 400: spare heat exchanger
410: first on-off valve 420: second on-off valve
S1 ~ S6 : Temperature sensor
P1, P2 : Pressure sensor V1 ~ V10 : Virtual sensor

Claims (12)

It relates to a heating system that can diagnose and control using a virtual sensor,
a first flow path 10 through which the heated water introduced from the outside circulates;
a heat exchanger 100 positioned adjacent to the path of the first flow path;
A second flow path through which the fluid used for heating or hot water supply is returned and introduced, a portion is disposed adjacent to the first flow path and the heat exchanger, and the fluid is reheated through the heat exchanger and then circulated to be used for heating or hot water supply ( 20);
a temperature sensor (S1 to S4) installed in at least one selected from the first flow path, the heat exchanger, and the second flow path to sense a temperature of the installed portion;
a virtual sensor (V1 to V10) for learning using operation data accumulated while operating a heating system capable of diagnosis and control using the virtual sensor, and for sensing the temperature of at least a portion where the temperature sensor is installed; and
an alarm unit for outputting an alarm to a manager when the difference between the temperature sensed by the virtual sensor and the temperature sensed by the temperature sensor is greater than or equal to a threshold;
A heating system that can diagnose and control using a virtual sensor that includes
According to claim 1,
The temperature sensor is a heating system capable of diagnosis and control using a virtual sensor installed at least on the side where the fluid is returned before being reheated on the second flow path.
According to claim 1,
The alarm output from the alarm unit to the manager is a heating system capable of diagnosis and control using a virtual sensor including information on the installation location of a temperature sensor having a temperature difference greater than or equal to a threshold value and information on a temperature difference with the virtual sensor.
According to claim 1,
The temperature sensor is installed on the second flow path, and is respectively installed at the front end and the rear end with respect to the heat exchanger,
a flow rate control valve 200 installed at a rear end of the heat exchanger in the path of the first flow path to control a supply amount of heating water; and
a control unit for adjusting the degree of opening and closing of the flow control valve according to sensing information of temperature sensors installed at the front and rear ends, respectively, based on the heat exchanger on the second flow path;
A heating system that can diagnose and control using a virtual sensor that includes.
5. The method of claim 4,
The virtual sensor senses the degree of opening and closing of the flow control valve,
When the difference between the degree of opening and closing of the flow control valve set by the control unit and the degree of opening and closing of the flow control valve sensed by the virtual sensor is greater than or equal to a threshold value, the alarm unit provides diagnosis and control using a virtual sensor that outputs an alarm to the manager possible heating system.
According to claim 1,
Including; and a pressure sensor (P1, P2) respectively installed at the front and rear ends of the second flow path 20 based on the heat exchanger 100 and sensing the pressure of the installed parts, respectively;
The virtual sensors (V6, V7) sense the pressure of the position where the pressure sensors (P1, P2) are installed,
If the difference between the pressure sensed by the virtual sensors (V6, V7) and the pressure sensed by the pressure sensors (P1, P2) is equal to or greater than a threshold value, the alarm unit tells the manager the pipe forming the second flow path 20 or the heat exchange A heating system capable of diagnosis and control using a virtual sensor that outputs an alarm indicating that the appliance 100 needs cleaning or replacement.
According to claim 1,
pumps (310, 320) installed in the second flow path (20) to transfer the fluid; and
Including; a control unit for controlling the operation of the pump (310, 320);
The virtual sensors (V8, V9) sense the rotational speed of the pumps (310, 320) and the flow rate transferred through the pumps (310, 320),
The alarm unit is the rotation speed of the pump (310, 320) set by the control unit, the target flow rate calculated through the rotation speed, and the rotation speed of the pump (310, 320) sensed by the virtual sensors (V8, V9) , A heating system capable of diagnosis and control using a virtual sensor that outputs an alarm to the manager when the difference in flow rate transferred through the pumps (310, 320) is greater than or equal to a threshold.
The method of claim 1,
The virtual sensor V10 senses the temperature of the heat exchanger 100,
The alarm unit may include heat exchange efficiency when the heat exchanger 100 is in an optimal state, and heat exchange of the heat exchanger 100 at a sensing time calculated through the virtual sensors V1, V2, V3, V4, and V10. A heating system capable of diagnosis and control using a virtual sensor that compares efficiencies and outputs an alarm that the heat exchanger 100 needs to be repaired or replaced if the difference in heat exchange efficiency is greater than or equal to a threshold value.
9. The method of claim 8,
The first flow passage 10 and the second flow passage 20 are installed to be connected to each other, and when the heat exchanger 100 operates normally, the heat exchanger 100 is not supplied because the heating water or the fluid is not supplied. A preliminary heat exchanger 400 installed in parallel with;
a first opening/closing valve 410 installed between the first flow path 10 and the preliminary heat exchanger 400 to determine a supply direction of the heating water;
a second opening/closing valve 420 installed between the second flow path 20 and the preliminary heat exchanger 400 to determine a supply direction of the fluid; and
By operating the first on-off valve 410 and the second on-off valve 420 according to the alarm output of the alarm unit, the heated water and the fluid flow to the preliminary heat exchanger 400 .
a control unit for controlling whether the first on-off valve 410 and the second on-off valve 420 are opened or closed;
including,
When the alarm unit outputs an alarm that repair or replacement of the heat exchanger 100 is required, the control unit controls the first on/off valve 410 and the second on/off valve 420 to control the heating water and the fluid. A heating system capable of diagnosis and control using a virtual sensor that allows the heat to flow to the preliminary heat exchanger (400).
According to claim 1,
and a data storage unit for storing operation data measured while operating a heating system capable of diagnosis and control using the virtual sensor;
The virtual sensors are a heating system capable of diagnosis and control using a virtual sensor that is continuously learned through the data stored in the data storage unit.
In the diagnostic control method using a heating system capable of diagnosis and control using the virtual sensor according to any one of claims 1 to 10,
outputting an alarm from the alarm unit to a manager when the difference between the state values of the devices included in the heating system and the state values of the devices sensed by the virtual sensor is equal to or greater than a threshold;
Diagnosis control method using a heating system capable of diagnosis and control using a virtual sensor comprising a.
A program stored in a computer-readable recording medium for implementing the diagnostic control method using a heating system capable of diagnosis and control using the virtual sensor according to claim 11 .

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