JP2012248965A - Facility control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a facility control system capable of determining devices which serve as a control source in a facility controller even if a plurality of devices which issue control information are connected to the facility controller in the system.SOLUTION: A core unit (facility controller) 2 comprises: a start/stop signal output unit 2c which outputs a start/stop signal to an air conditioner 6 on the basis of control information; a start/stop failure determination processing unit 2d which determines that start/stop is unsuccessful when control contents of the start/stop signal do not match a state signal acquired from the air conditioner 6 within a monitoring time; a device determination unit 2e which determines a device serving as a control source which issued the control information; and a transmitting/receiving unit 2b which receives the control information and transmits an alarm signal to the device which serves as the control source. This configuration allows the core unit 2 to determine devices which serve as the control source such as a central monitoring device 1 and a hand setter 8 even if a plurality of devices which serve as the control source are connected to the core unit 2.

Description

  The present invention relates to an equipment control system for controlling equipment such as an air conditioner by a command signal transmitted from an equipment controller connected to a plurality of devices.

  Conventionally, an air conditioning system (equipment control system) having a VAV (Variable Air Volume) unit that controls the air volume from an air conditioner individually according to the temperature conditions of each of a plurality of air-conditioned spaces is known. . In this air conditioning system, if the temperature difference in the room is large, the air volume is increased by adjusting the air volume corresponding to the temperature difference, and the air volume is gradually decreased as the temperature approaches the set temperature. . Thereby, the burden on the air conditioner can be reduced, and the running cost can be reduced and the energy can be saved.

  As shown in FIG. 6, the air conditioning system includes, for example, a central monitoring device 61, a core unit (equipment controller) 62, an air conditioner 63, and a hand setting device 64. The user controls ON / OFF of the air conditioner 63 and the set temperature using the central monitoring device 61 or the hand setting device 64. The port 1 provided in the core unit 62 is connected to the central monitoring device 61, and the port 2 is connected to the hand setting device 64.

  The operation of this air conditioning system will be described with reference to FIG. First, the central monitoring device 61 transmits an on / off signal, which is a command to the air conditioner 63, to the core unit 62, and the on / off signal receiving unit 62a included in the core unit 62 receives the on / off signal (S71). . Next, the start / stop signal output unit 62b transmits an ON / OFF command to the air conditioner 63 based on the start / stop signal (S72). The air conditioner 63 returns a current state (ON / OFF) signal after receiving the ON / OFF command to the core unit 62 (S73).

  Next, the start / stop failure determination processing unit 62c provided in the core unit 2 transmits the ON / OFF command transmitted to the air conditioner 63 and the current state (ON / OFF state) signal received within the start / stop failure monitoring time. It is determined whether or not the contents of each match. The start / stop failure determination processing unit 62c determines that the start / stop failure has occurred if they do not match, and transmits a start / stop failure warning signal to the central monitoring device 61 (S74) and also to the hand setting device 64. (S75). Note that the automatic control calculation processing unit 62d calculates when the start / stop signal is output from the core unit 62.

  By the way, many air conditioners installed in a building can be controlled and monitored from a plurality of locations such as a central monitoring panel of a building and a central control device, and an air conditioning management system that is easy to use is also known (for example, patents) Reference 1).

JP-A-6-241544

  However, in the conventional air conditioning system, the core unit 62 is connected to a plurality of devices that transmit control information for the air conditioner 63 such as the central monitoring device 61 and the hand setting device 64. In this case, the core unit 62 cannot monitor which device has controlled the air conditioner 63 based on the control information transmitted. Accordingly, even if the start / stop failure determination processing unit 62c determines that the start / stop failure has occurred, the core unit 62 cannot identify the control source device that has transmitted the control information, and the start / stop failure alarm signal is connected to the system. Reply to all devices.

  The present invention has been made in view of the above problems, and even when a plurality of devices that transmit control information are connected to a facility controller, the facility control system can determine a device that is a control source in the facility controller. The purpose is to provide.

  In order to achieve the above object, the present invention provides an equipment control system comprising: an equipment controller that controls equipment; and a plurality of devices that are communicatively connected to the equipment controller and transmit control information for controlling the equipment. The facility controller transmits the control information, receiving means for receiving the control information, start / stop signal output means for outputting a start / stop signal to the equipment based on the control information received by the receiving means, and the control information. A device determination unit for determining a device as a control source, and a start / stop signal is output to the facility by the start / stop signal output unit, and the control content of the start / stop signal and the facility within a predetermined monitoring time. When the state signal to be acquired does not match, the start / stop failure determination processing means for determining the start / stop failure, and the control determined by the device determination means when the start / stop failure is determined And transmitting means for transmitting a warning signal to the device to be, it is characterized in.

  In this facility control system, it is preferable that the device determination means determine the device that is the control source based on an input port number provided in the facility controller.

  In this facility control system, it is preferable that the receiving unit receives the control information with a flag, and the device determination unit determines the device to be the control source based on the flag.

  In this equipment control system, it is preferable that the transmission means transmits the alarm signal to a device other than the device that is the control source.

  According to this invention, an equipment controller is provided with the apparatus determination part which determines the apparatus used as the control origin which transmitted control information. Therefore, even when a plurality of control source devices are connected to the facility controller, the device determination unit of the facility controller can determine the control source device and reliably transmit an alarm signal or the like to the control source device.

The block diagram of the air conditioning system which concerns on embodiment of this invention is shown. The functional block diagram of the core unit with which an air-conditioning system is equipped is shown. It is a sequence diagram which shows the data flow of the whole air conditioning system same as the above. (A) thru | or (d) is a figure which shows the example of a data structure of the start / stop signal transmitted by an air-conditioning system same as the above, respectively, (e) is a figure which shows the example of a data structure of an alarm signal. It is a figure which shows the example of a screen display of the central monitoring apparatus with which an air-conditioning system same as the above is provided. The functional block diagram of the core unit with which the conventional air conditioning system is equipped is shown. It is a sequence diagram which shows the data flow of the whole air conditioning system same as the above.

(Embodiment 1)
Embodiment 1 in which an equipment control system of the present invention is applied to an air conditioning system will be described with reference to the drawings. The air conditioning system S of FIG. 1 is used for monitoring and control of air conditioning equipment in an office building, and includes a central monitoring device 1, a core unit 2, a VAV controller 3, a setting device 4, a VAV unit 5, and an air conditioner. 6, I / O 7 and a hand setting device 8 are provided. Each device is connected for communication via the bus 10.

  The central monitoring device 1 is a desktop or wall-mounted computer for centrally managing the air conditioning system S. The central monitoring device 1 acquires data such as a state (ON / OFF) signal, an alarm signal, a room temperature, and an air volume sent from the air conditioner 6 to the core unit 2 via the bus 10 and displays the screen. In addition, the central monitoring device 1 transmits command data such as an on / off signal and a set temperature given to the air conditioner 6 to the VAV controller 3 via the bus 10. The user can monitor the operating state of the air conditioner 6 via the screen display of the central monitoring device 1 and change various setting values.

  The core unit (equipment controller) 2 is a controller for air conditioning control, and receives a control signal of the air conditioner 6 transmitted from the central monitoring device 1 and the hand setting device 8 connected by communication, and based on this control signal Command data such as start / stop signals and set temperature is transmitted to the air conditioner 6. The core unit 2 has a function of arbitrarily selecting and expanding the I / O 7 according to the air conditioner 6 to be controlled by combining various input / output terminals. Furthermore, the core unit 2 directly communicates with the VAV controller 3 to enable interlocking control with the VAV unit 5.

  The VAV controller 3 is used by being attached to the VAV unit 5, calculates the required air volume for each air-conditioned space from the detected value of the wind speed sensor and the indoor measured temperature detected by the temperature sensor, and sets the opening of the damper of the VAV unit 5. Adjust the air volume control.

  The setting device 4 is a room remote controller that is connected to the VAV controller 3 through a signal line or the like and is used when controlling the VAV unit 5. Operation input is possible. The setting device 4 displays the on / off state of the VAV unit 5, the operation display, the room temperature display, and the like on a liquid crystal screen.

  The VAV unit 5 is connected to the air conditioner 6 through a duct 9. This VAV unit 5 is provided with a damper attached to the duct 9 for variably controlling the air volume of each air-conditioned space, and adjusts the opening degree of the damper based on an open / close command signal received from the VAV controller 3 to each air-conditioned space. Adjust the temperature. The duct 9 is provided with a VAV unit 5 as air volume adjusting means, and air whose air volume has been adjusted is blown out through the VAV unit 5 into the conditioned space.

  The air conditioner 6 includes a blower that is rotationally driven by a motor, a heat exchanger, an inverter, and the like, and supplies cool air and warm air to a plurality of air-conditioned spaces of the building through the duct 9. The air conditioner 6 is communicably connected to the core unit 2 and receives command data such as a start / stop command, a fan rotation speed command, and a temperature command. The I / O 7 is an input / output terminal disposed between the core unit 2 and the air conditioner 6 and connected to the core unit 2.

  The hand setting device 8 is connected to the air conditioner 6 so that, for example, the air conditioner 6 can be started / stopped (on / off) and temperature setting operation input can be performed. On the basis of the current state signal transmitted from the air conditioner 6, the hand setting device 8 displays an on / off state of the air conditioner 6, an operation display / indoor temperature display, and the like on an LED or liquid crystal screen.

  Next, the functional configuration of the core unit 2 of the air conditioning system S according to the first embodiment will be described with reference to FIG. The core unit 2 includes an automatic control arithmetic processing unit 2a, a transmission / reception unit 2b, a start / stop signal output unit 2c, a start / stop failure determination processing unit 2d, and a device determination unit 2e in the CPU 21, and the port 1 of the core unit 2 is in the center. The monitoring device 1 and the port 2 are connected to the local setting device 8.

  The automatic control calculation processing unit 2a performs calculation for adjusting the temperature of each air-conditioned space, and executes an on / off signal command to the air conditioner 6 as necessary. The transmission / reception unit 2b receives the start / stop signal from the central monitoring device 1 connected to the port 1 or the hand setting device 8 connected to the port 2, and sends the alarm signal and the status signal to the central monitoring device 1 and the hand setting device 8 Send to. The start / stop signal output unit 2c outputs an ON / OFF command signal to the air conditioner 6 based on the start / stop signal received by the transmission / reception unit 2b. The start / stop failure determination processing unit 2d compares the ON / OFF command transmitted to the air conditioner 6 with the current state (ON / OFF) signal received from the air conditioner 6 within the monitoring time within a predetermined period. If the / OFF states do not match, it is determined that the start / stop has failed. The device determination unit 2e determines a device serving as a control source that has transmitted the control information of the air conditioner 6 based on the input port number that has received the control information. That is, the device determination unit 2e determines whether the central monitoring device 1 or the hand setting device 8 has transmitted the control information.

  Next, the operation of the air conditioning system S according to the first embodiment will be described with reference to FIG. First, the central monitoring device 1 transmits an on / off signal for opening / closing control of the air conditioner 6 to the core unit 2 (S31). Then, the core unit 2 transmits an ON / OFF command based on the start / stop signal to the air conditioner 6 (S32), and receives a current state signal from the air conditioner 6 within a predetermined monitoring period (S33). Within this monitoring period, the air conditioner 6 performs ON / OFF control based on the command and transmits the current state to the core unit 2.

  Next, the device determination unit 2e of the core unit 2 determines a device serving as a control source based on the input port number that has received the start / stop signal. In this case, the device determination unit 2e determines that the central monitoring device 1 of the port number 1 that has transmitted the start / stop signal shown in S31 to the core unit 2 is a control source device. When the core unit 2 determines that the start / stop failure that the ON / OFF command transmitted by the start / stop failure determination processing unit 2d does not match the current state (ON / OFF) of the air conditioner 6, the alarm signal is sent to the center unit. It transmits to the monitoring apparatus 1 (S34). Thereafter, the central monitoring device 1 displays an abnormal state of the air conditioner 6 on the screen.

  When the hand setting device 8 transmits a start / stop signal to the core unit 2 (S35), the core unit 2 transmits an ON / OFF command based on the start / stop signal to the air conditioner 6 (S36). Then, the core unit 2 receives a current state signal from the air conditioner 6 within a predetermined monitoring period (S37). Next, the device determination unit 2e of the core unit 2 determines a device serving as a control source based on the input port number that has received the start / stop signal. In this case, the device determination unit 2e determines that the hand setting device 8 having the port number 2 that has transmitted the start / stop signal to the core unit 2 in S37 is a control source device. When the start / stop failure determination processing unit 2d determines that the start / stop failure has occurred, the core unit 2 transmits an alarm signal to the hand setting device 8 (S38), and the hand setting device 8 determines that the air conditioner 6 is in an abnormal state. Is displayed.

  As described above, in the air conditioning system S according to the first embodiment, the device determination unit 2e of the core unit 2 is a port even when there are a plurality of devices that transmit control information (start / stop signal) of the air conditioner 6. The control source device can be specified based on the number. When the start / stop failure determination processing unit 2d determines that the start / stop failure has occurred, the core unit 2 can transmit an alarm signal to the control source device determined by the device determination unit 2e. The state of the machine 6 can always be monitored.

(Embodiment 2)
The second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the structure similar to the air conditioning system S which concerns on the said Embodiment 1, and the detailed description is abbreviate | omitted.

  In the core unit 2 according to the first embodiment, one device is connected to one port. However, a plurality of devices may be connected to one port. In the second embodiment, when a plurality of devices are connected to one port of the core unit 2, flag information for identifying the device is added to the control information transmitted to the core unit 2, and the core unit 2 Is characterized by specifying a control source device based on the flag.

  Here, the data of the start / stop signal transmitted from the central monitoring device 1 will be described with reference to FIG. The transceiver unit 2b of the core unit 2 receives the start / stop signal in which the flag information 41 is added to the start / stop signal information 40. 4A shows a control signal from the central monitoring device 1 connected to the port 1, FIG. 4B shows a control signal from the hand setting device 8 connected to the port 2, and FIG. These are control signals from the automatic control arithmetic processing unit 2a. FIG. 4D is a control signal from a device other than the central monitoring device 1 connected to the port 1. The device determination unit 2e can specify a device that is a control source based on the flag information 41.

  In addition, the start / stop failure determination processing unit 2d outputs a start / stop signal to the air conditioner 6 by the start / stop signal output unit 2c, and the control (ON / OFF) contents of the start / stop signal and the air conditioning within the monitoring time. If the state (ON / OFF) signal acquired from the machine 6 does not match, it is determined that the start / stop has failed. In this case, the transmission / reception unit 2b transmits the alarm signal information 42 shown in FIG. 4 (e) with the flag information 43 of the control source device added as an alarm signal. Then, by transmitting this alarm signal to the central monitoring device 1, the central monitoring device 1 can display an on / off failure alarm in which the device to be controlled is specified on the screen.

  Here, a screen display example of the central monitoring device 1 will be described with reference to FIG. On the screen 50 of the central monitoring apparatus 1, for example, port number 51, host name 52, operator name 53, date and time 54, type A 55, type B 56, history data 57, and status 58 are displayed. The host name 52 is a name of a device connected to the port such as “central monitoring device”. The operator name 53 is a user operation name such as “hand operation”. The type A55 is the type of signal received by the central monitoring device 1, and in the case of an alarm signal received from the core unit 2, “alarm recording” is displayed. In the type B56, the content of the type A55 is displayed, and “status mismatch” indicating that the start / stop command to the air conditioner 6 and the current status signal received from the air conditioner 6 are mismatched is displayed. In the state 58, the current control state of the air conditioner 6 is displayed, and “recovered” is displayed when the state is recovered from the state mismatch, and “occurrence” is displayed when the state mismatch has occurred and is not recovered.

  As described above, in the second embodiment, the device determination unit 2e of the core unit 2 uses the flag information 41 added to the start / stop signal information 40 to control information from a plurality of different devices at the same port ( Even in the case of receiving the (start / stop signal), it is possible to reliably determine the control source device. In addition, the central monitoring device 1 can receive the warning signal information 42 to which the flag information 43 is added, thereby displaying a warning of the start / stop failure in which the device serving as the control source is specified, and can reliably warn the user. .

  In the first and second embodiments, the transmission / reception unit 2b can transmit a start / stop failure alarm signal to a device other than the control source device. In this case, the core unit 2 can reliably transmit an alarm signal or the like to a device that can display the screen, such as the central monitoring device 1, and can warn the user.

  Further, the present invention is not limited to the configuration of the above-described embodiment, and various modifications can be made without departing from the spirit of the invention. For example, this equipment control system is not limited to an air conditioning system, but can be similarly applied to an illumination system that performs illumination control. In this equipment control system, the information transmitted from the central monitoring device 1 or the hand setting device 8 to the core unit 2 is not limited to the start / stop signal, and the same control is performed with other information such as temperature setting. realizable.

1 Central monitoring device (equipment)
2 Core unit (equipment controller)
2a Automatic control arithmetic processing unit 2b Transmission / reception unit (transmission means and reception means)
2c Start / stop signal output unit 2d Start / stop failure determination processing unit 2e Device determination unit 3 VAV controller 4 Setter 5 VAV unit 6 Air conditioner (facility)
7 I / O
8 Hand setting device (equipment)
9 Duct S Air conditioning system (equipment control system)

Claims (4)

In an equipment control system comprising: an equipment controller that controls equipment; and a plurality of devices that are communicatively connected to the equipment controller and transmit control information for controlling the equipment,
The facility controller is
Receiving means for receiving the control information;
A start / stop signal output means for outputting a start / stop signal to the equipment based on the control information received by the receiving means,
A device determination means for determining a device as a control source that has transmitted the control information;
When the start / stop signal is output to the equipment by the start / stop signal output means, and the control content of the start / stop signal does not match the status signal acquired from the equipment within a predetermined monitoring time, the start / stop failure occurs. Start / stop failure determination processing means for determining,
A facility control system comprising: a transmission unit configured to transmit an alarm signal to a device serving as a control source determined by the device determination unit when the start / stop failure is determined.   The equipment control system according to claim 1, wherein the equipment determination unit determines the equipment to be the control source based on an input port number provided in the equipment controller. The receiving means receives the control information with a flag,
The equipment control system according to claim 1, wherein the device determination unit determines a device serving as the control source based on the flag.   The equipment control system according to any one of claims 1 to 3, wherein the transmission unit transmits the alarm signal to a device other than the device serving as the control source.

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