JPH03204541A - Air conditioning controller - Google Patents

Abstract

PURPOSE:To save wiring by a method wherein a central controller can recognize each setting terminal unit by distinction between individual addresses and change a desired state to be controlled by the central controller in response to setting signals from setting terminal units, and also send display signals to the setting terminal units. CONSTITUTION:A setting terminal unit 40 is provided in each controlled space 1. Another terminal unit 27 or the setting terminal unit 40 is connected to a double-lined multitransmission line 41, and further to a central controller 42. An operation display unit 43 connected to the central controller 42. Communication lines 44 connected to a means 45 for centralized control of terminal units of a large-sized computer or personal computers or to a central controller for another air conditioning control system are also connected to the central controller 42. Thus an air conditioning controller can easily confirm the actual air-conditioning state in each of the controlled space 1 through the setting terminal units and also change desired conditions. Further, as signal transmission between air conditioning controller and the central controller is carried out through the multitransmission line 41 which transmits measurement control signals of the controlled spaces 1, wiring can be saved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air conditioning control device that controls index elements of air conditioning conditions such as temperature, humidity, or concentration of carbon monoxide, carbon dioxide, etc. in a controlled space.

[Prior Art] In many buildings such as buildings and factories, air is blown into the room so that the temperature, humidity, concentration, etc. of controlled spaces such as each room or individual space of the building are maintained at a desired state. The air conditioner is equipped with an air conditioning control device that follows and controls the state or amount of air.

This air conditioning control device takes in outside air together with exhaust air from a controlled space into an air conditioner, and is provided with an air conditioning loop that blows air from the air conditioner into the controlled space.
It is equipped with a detector that measures index elements of air conditioning conditions such as humidity or concentration, and a controller that variably controls the condition or amount of air blown into the controlled space, and the measurement signal of the detector is input to the central control device. The air conditioning system monitors the air conditioning state, drives the controller in response to control signals from the central control device, and performs air conditioning control so that the controlled space is in the desired air conditioning state.

This central control unit monitors and controls these detectors and controllers through terminals connected to the central control unit via multiple transmission lines so as to enable multiple transmission by distinguishing addresses.

Further, the desired state of the controlled space controlled by the central control device is set in advance by a setting operation from a setting device of the central control device.

[Problem to be solved by the invention]

Therefore, the above-mentioned air conditioning control device can
In order to check the current air conditioning status or change the desired status, it is necessary to go to or contact a location equipped with a central control unit, central control unit, or computer, which is a troublesome process.

As an improvement measure, it is possible to pull out a setting device from the central control device into the controlled space and use this setting device to check the current air conditioning status and change the desired condition, but the signal line for the setting device is There is a problem that separate functions are required.

The present invention has been made in view of the above circumstances, and its purpose is to enable connection of a setting terminal to a multiplex transmission line that transmits measurement control signals of a controlled space, and to easily connect a setting terminal to a multiplex transmission line that transmits measurement control signals of a controlled space. An object of the present invention is to provide an air conditioning control device that can check the current air conditioning status and change the desired status.

(Means for Solving the Problem) In order to solve the problem, the air conditioning control device according to claim (1) sets individual addresses on the multiplex transmission line to enable transmission to and from the central control device, and Connect a setting terminal device that transmits the set setting signal to the central control device and externally displays the display signal transmitted from the central control device, and the central control device selects the setting terminal device by distinguishing the individual addresses. It is possible to change the desired state controlled by the central control unit by recognizing and responding to the setting signal of the setting terminal, and it is also possible to send a display signal to the setting terminal in response to the setting signal of the setting terminal. This is what happens.

[Effect]

Therefore, the air conditioning control device of claim (1) can easily check the current air conditioning status of the controlled space and change the desired status using the setting terminal, and can also transmit measurement control signals of the controlled space. Since signals are transmitted to and from the central control unit over multiple transmission lines, wiring can be reduced.

[Embodiment] Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 and 2. A controlled space 1- such as an indoor or space of a building, factory, etc. is provided with a branched air duct 2. Air is blown through a branched air duct 3 and exhausted from an exhaust duct 4 either individually or collectively.

Further, the exhaust duct 4 is divided into a discharge duct 5 to the outside air and a return duct 6, and the return duct 6 is connected to an intake duct 7 for outside air to be taken into the air conditioner 8.

This air conditioner 8 is equipped with a heating/cooling coil 8a, a humidifier 8b, and a blower fan 8C, and air is sent into the blower duct 2.

With this configuration, exhaust air from the controlled space 1- through the exhaust duct 4 and outside air through the intake duct 7 are taken into the air conditioner 8, and air is sent from the air conditioner 8 to the controlled space 1 through the ventilation duct 2. It constitutes an air conditioning loop.

This air conditioning loop is equipped with the following equipment so that the air conditioning of the controlled space is in the desired state.

That is, the controlled space 1- is equipped with a temperature/humidity detector 9- that measures temperature or humidity as an electrical quantity.

Further, the exhaust duct 4 includes a temperature detector 10 that measures temperature as an electrical quantity, a humidity detector 11 that measures humidity as an electrical quantity, and - a concentration detector that measures the concentration of carbon oxide or carbon dioxide as an electrical quantity. 12, and a controller 14 consisting of an inverter for controlling a motor that variably controls the rotation speed of an exhaust fan 130 so as to control the air volume according to the input amount.

Moreover, the discharge duct 5 is equipped with a damper controller 15 that variably controls the opening degree according to the input amount, and the return duct trouser is equipped with a damper controller 16 that variably controls the opening degree according to the input amount.

The intake duct 7 also includes a temperature detector 17 that measures temperature as an electrical quantity, a humidity detector 18 that measures humidity as an electrical quantity, and a damper controller 19 that variably controls the opening degree according to the input quantity. It is equipped with.

Furthermore, the ventilation duct 2 includes a temperature detector 20 that measures temperature as an electrical quantity, a humidity detector 2I that measures humidity as an electrical quantity, and a pressure detector that measures the internal pressure as an electrical quantity compared with the external pressure. It is equipped with a container 22.

Moreover, each of the branch air ducts 3- is equipped with a damper controller 23- which variably controls the opening degree according to the input amount.

Also, for the air conditioner 8, a heating/cooling coil 8
a controller 24 consisting of a three-way valve drive motor that variably controls the amount of hot water, steam, cold water, refrigerant, etc. supplied to a according to the input amount;
A controller 25 includes a three-way valve drive motor that variably controls the amount of water and steam supplied to the humidifier 8b according to the input amount, and a controller 25 that variably controls the rotation speed of the ventilation fan 8c to control the air volume according to the input amount. A controller 2 consisting of an inverter for controlling a motor
It is equipped with 6.

Further, the temperature/humidity detector 9- of the controlled space l- is connected to the measurement control terminal 27-, respectively, in correspondence with the damper controller 23- of the branch air duct 3-. temperature sensor 20 to the controller 24 of the air conditioner,
The humidity detector 21 of the ventilation duct 2 is connected to the controller 2 of the air conditioner.
5 and are connected to measurement control terminals 28 and 29, respectively.

Moreover, the temperature, humidity, and concentration detection H11 of the exhaust duct 4,
12, 13 and intake duct 7 temperature and humidity detector 17.
18 and the pressure detector 22 of the air duct 2 are connected to measuring terminals 30, 31, 32, 33, 34, 35, respectively.

Further, the controller 14 of the exhaust fan 13 and the controller 26 of the air conditioner 8 are connected to a control terminal 36.

Furthermore, the damper controller 15 of the discharge duct 5 and the damper controller 16 of the return duct 16 as well as the damper controller 19 of the intake duct 7 are each connected to a drive terminal 37, 38, 39.

Furthermore, the controlled space 1- is equipped with a setting terminal 40.

These terminals 27 to 40 are connected to a two-wire multiplex transmission line 41 and connected to a central control unit 42.

Further, an operation display device 43 is connected to the central control device 42, and a central control device 45 such as a terminal device of a large computer or a personal computer, or a central control device (not shown) of another air conditioning control system is connected to the central control device 42. The connected communication line 44 is connected.

This central control unit 42 has a multiplex transmission unit 42a that reads out signals from the terminals 27 to 40 in a time-division manner based on address distinction between the terminals 27 to 40 via the multiplex transmission line 41, and transmits signals. Centralized monitoring and control device 4 via line 44
5 and an external communication unit 42b that transmits signals to the operation display device 4.
3, and the above-mentioned multiplex transmission section 42a, external communication section 42b, and display communication section 42c.
data regarding the air conditioning state, desired state, setting state, etc. of the controlled space 1-, and, for example, proportional integral differential control (P
It is composed of a storage section 42d that stores a large number of operation processing programs, etc., including ID control), and a calculation section 42e that performs calculation processing based on the data or operation processing programs etc. from each section 42a to 42d.

The central control device 42 executes the following operations through the cooperation of each section 42a to 42e.

First, an operation is performed to provide the measurement control terminals 27 to 29 and the control terminal 36 with setting conditions and control target values necessary for them to execute control via the multiplex transmission line 41. Execute.

These setting conditions or control target values may be set from the central monitoring and control device 45 via the communication line 44, from the setting terminal 40 via the multiplex transmission line 41, or from different measurement control terminals. When setting the transfer of monitor information sent from the devices 27 to 29, the control terminal 36, and the drive terminal 37 to 39 for linked operation, the setting may be made from the operation display device 43.

In addition, for these setting conditions or control target values, the measurement control terminals 27 to 29 and the control terminal 3
6 or the results of necessary arithmetic processing are transferred to the measurement control terminals 27 to 29 and the control terminal 3.
6, and this is processed based on the operation processing program.

Note that when performing necessary arithmetic processing, the storage unit 42a
At least one of a large number of operation processing programs stored in the computer is selected and arbitrarily combined to execute processing.

Second, the inputs transmitted from the measurement control terminals 27 to 29 and the measurement terminals 30 to 35 are processed by different measurement control terminals 27 to 29 and the control terminal 36 with or without arithmetic processing. It also sends the data to the driving terminals 37 to 39 as well as to the centralized monitoring and control device 45.

Regarding the arithmetic processing in this case as well, at least one of the many operation processing programs stored in the storage section 42a is selected and executed in arbitrary combination.

Thirdly, measurement control terminals 27 to 29, measurement terminals 30 to 35, control terminal 36, and drive terminal 37.
The inputs transmitted from 39 to 39 are sent to the operation display device 43 with or without arithmetic processing and are displayed, and if necessary, an alarm is issued with a buzzer, bell, etc. .

Fourth, control commands linked to schedule control information, pattern control information, demand control information, fire signal information, etc. input from the operation display device 43 and the central monitoring control device 45 are transmitted to the measurement control terminals 27 to 29, The signal is sent to the control terminal 36 and the driving terminals 37 to 39, and an operation is performed to control the signal to a predetermined state.

Fifth, the setting terminal device 40 is recognized by distinguishing the individual addresses, and in accordance with the setting input transmitted from the setting terminal device 40, individual or overall setting conditions or control target values can be varied, and the setting It performs an operation of transmitting display signals requested by the setting terminal 40 such as the control object, setting conditions, control target value or current value, etc. to the terminal 40.

Next, to explain each terminal device 27 to 40, each terminal device 27 to 40 has address setting sections 27a to 40a that can set individual addresses, and addresses set in these address setting sections 27a to 40a can be centrally set. Multiplex transmission sections 27b to 40b that perform signal transmission with the central control device 42 when called by the control device 42, storage sections 27c to 40c that store data and operation processing programs, etc., input/output sections 27d to 40d, and each section. It has arithmetic units 27e to 40e that perform arithmetic processing based on data imported from the computer or an operation processing program.

Furthermore, each of the terminal devices 27 to 40 will be specifically explained.

First, the measurement control terminals 27 to 29 are connected to the multiplex transmission line 4.
The setting signal from the central controller 42 transmitted via the detector 9 is stored in the storage units 27c to 29c, and
−120.21 Input/output units 27d to 29
d is inputted and converted into a numerical value, and the stored setting signal and the calculation parts 27e to 40e perform calculation processing, and the numerical values based on the calculation results are converted into control amounts by the input/output parts 27d to 29d, and the controller 2 Output to -124,25 in total.

This arithmetic processing is performed based on a pre-stored arithmetic processing program of, for example, proportional-integral-derivative control (PID control).

At this time, the measured quantity from the detector 9-120.21 and the controlled quantity to the controller 23-124.25 are sent as monitor information to the central control unit 42 via the multiplex transmission line 41.

Specifically, the measurement control terminal 27- performs, for example, proportional-integral-derivative control (PID control) so that the measured amount of the temperature/humidity detector 9- becomes the desired temperature/humidity corresponding to the setting signal from the central controller 42. ) is executed to create the controlled space 1.
- drives the controller 23- that varies the amount of air blown to -.

In addition, the measurement control terminal 28 executes arithmetic processing using, for example, proportional-integral-derivative control (PID control) so that the measured amount of the temperature detector 20 becomes a desired temperature corresponding to the setting signal from the central control device 42. Then, the controller 24 that changes the temperature and humidity of the air blown into the controlled space 1 is driven.

Furthermore, the measurement control terminal 29 executes arithmetic processing using, for example, proportional-integral-derivative control (PID control) so that the measured amount of the humidity detector 21 becomes the desired humidity corresponding to the setting signal from the central control device 42. to drive the controller 24 that changes the humidity of the air blown into the controlled space 1-.

Note that the measurement control terminal 28 controls the controlled space 1.
In order to also vary the humidity of the air blown to -, the measurement control terminal 29 is
will perform the action.

Next, the measurement terminals 30 to 35 are connected to the detectors 10 and 11.
．． The human output unit 30 outputs the measured quantities from 12.17.18.22.
d to 35d are converted into numerical values and input, stored in the storage units 30c to 35c, and transmitted as monitor information to the central control unit 42 via the multiplex transmission line 41.

Specifically, the measurement terminals 30, 31 and 33, 34 and 33, 34 and 33, respectively send the monitoring information to the central control unit 42, and the measurement terminals 30.31 and 33.34, respectively, measure the temperature and humidity of the exhaust duct 4, and the measurement terminals 33.34 measure the temperature and humidity of the outside air. The central controller 42 compares the enthalpy of the exhaust air and the enthalpy of the outside air to control the damper controllers 37 to 39.

The measuring terminal 32 also transmits the measured amount of concentration of carbon monoxide, carbon dioxide, etc. in the exhaust duct to the central controller 42.
A signal is transmitted as monitor information, and the central control unit 42
The damper controllers 37 to 39 are controlled in conjunction with the enthalpy comparison described above so that the concentration in the controlled space becomes a desired state.

Furthermore, the measurement terminal device 35 transmits a signal to the central control device 42 as monitor information of the measured amount of the internal pressure of the ventilation duct 2, so that the central control device 42 brings the internal pressure of the ventilation duct 2 into a desired state. The controllers 14 and 26 that vary the amount of air blown and exhausted to the controlled space 1.- are controlled.

Moreover, the control terminal 36 stores the setting signal and control signal from the central control unit 42 transmitted via the multiplex transmission line 41 in the storage section 36c, and also uses the calculation section 36e to convert the control signal into a setting signal. The calculation process is performed, and the numerical value based on the calculation result is converted into a control amount by the input/output section 36d, and the controller 1
Output on 4.26.

This arithmetic processing is performed based on a pre-stored arithmetic processing program of, for example, proportional-integral-derivative control (PID control).

At this time, the control amount to the controller 14.26 is changed to the multiplex transmission line 4.
1 to the central control unit 42 as monitor information.

This control terminal device 36 allows the controllers 14, 26 to control the internal pressure of the blower duct 2 to a desired state as described above, that is, the controlled space 1-... which is varied by the damper controller 9-. It is driven according to the amount of air blown to.

Moreover, the driving terminals 37 to 39 are connected to the multiplex transmission line 41.
The control signals from the central control unit 42 transmitted through the storage units 37e to 39e are stored in the storage units 37e to 39e, and the numerical values corresponding to these control signals are converted into control amounts by the input/output units 37c to 39c, and the controllers Output on 15.16.19.

In addition, the central control device 4 connects these driving terminals 37 to 39.
The control signal from 2 is the result of arithmetic processing of, for example, proportional-integral-derivative control (PID system tIl) performed by the central controller 42, and the drive terminals 37 to 39 control the control signal. At this time, the controller 3
The operation confirmations 7 to 39 are sent as monitor information to the central control unit 42 via the multiplex transmission line 41.

The drive control devices 37 to 39 are connected to the measurement terminal 30.
．． The relationship between the enthalpy of the exhaust side air measured by 31 and the enthalpy of the exhaust side air measured by the measurement terminal 33 and 34, and the relationship between the concentration of the exhaust side air measured by the measurement terminal 32, Based on the results of calculation processing performed by the central controller 42, the damper controller controls the amount of air exhausted to the outside, the amount of air taken in from the outside, and the amount of air reused in a well-balanced manner. 1
Drive 5.16.19.

Further, in the setting terminal 40-, the input/output section 40d is used as an input part 40f for manually inputting individual or overall setting conditions or control target values, and an input section 40f for inputting the air conditioning state of the controlled space 1-, control target values, etc. It is composed of a display section 40g that can be displayed on a monitor, and sets values and the like inputted from an input section 40f are stored in a storage section 40c and transmitted to a central control device 42 via a multiplex transmission line 41.

Also, monitor information from the terminals 27 to 39 is sent to the central controller 42 or control target values are sent to the central controller 42.
, and stores it in the storage section 40c as well as displaying it on the display section 40.
Display externally with g.

This setting terminal 40- is used to confirm, set or set desired conditions such as the temperature, humidity or concentration of the controlled space 1- which is monitored and controlled by the central control device 42 through operation and display from the input/output section 40d. Changes etc. can be made.

To explain the air conditioning control state, the air blown into the controlled space 1- is monitored and controlled by the central controller 42, and the temperature and humidity are measured and controlled by the measurement control terminals 28 and 29. At the same time, the air conditioner 8 is controlled to a desired state, and the amount of air blown is measured and controlled by the measurement terminal 35 and the control terminal 36, and the controllers 14 and 26 of the exhaust fan 13 and the blower fan 8c are controlled to the desired state. control. In addition, the amount of blown air is individually measured and controlled by the measurement control terminal 27-, and controlled to a desired state by the damper controller 23-.

By measuring and controlling the air blown into the controlled space 1-, the temperature and humidity of the controlled space 1- is controlled to a desired state.

Furthermore, the concentration of carbon oxide, carbon dioxide, etc. in the controlled space 1- is monitored and controlled by the central control device 42 by the measuring terminal 12 and the damper controller 15, 16, 19.
Measurement and control are performed to take in outside air, and the controlled space 1
- control the concentration of - to a desired state.

When this outside air is taken in, the enthalpy of the air on the exhaust side is compared with the enthalpy of the air on the outside air side, and the intake to the air conditioner 8 is efficiently controlled so as to save energy.

In the embodiment, one mode of air conditioning control has been described, but the present invention is not limited to this, and may be modified as described below, for example.

That is, replacing the measurement control system of the measurement terminal device and the control terminal device with the control system using the measurement control terminal device, or
It is possible to replace the measurement control system of the measurement terminal, central control device, and driving terminal with the measurement control system of the measurement terminal and control terminal, or the control system using the measurement control terminal.

Furthermore, it is possible to change the installation location of the detector or controller for the air conditioning loop, or the detection target or control target of these detectors or controllers, and furthermore, it is also possible to change the air conditioning loop. be.

〔Effect of the invention〕

The air conditioning control device of the present invention sets individual addresses on the multiplex transmission line so that it can be transmitted to and from the central control device, transmits an externally set setting signal to the central control device, and transmits the signal from the central control device. A setting terminal device that externally displays the displayed display signal is connected, and the central control device recognizes the setting terminal device by distinguishing the individual addresses, responds to the setting signal of the setting terminal device, and is controlled by the central control device. In addition to making it possible to change the desired state to be used, it is also possible to send a display signal to the setting terminal in response to the setting signal from the setting terminal, so the setting terminal can easily display the current air conditioning status of the controlled space. It is possible to confirm the information and change the desired state, and it is also possible to save wires because the signal is transmitted to the central control device through a multiplex transmission line that transmits the measurement control signal of the controlled space.

[Brief explanation of drawings]

FIG. 1 is an air conditioning control diagram showing one embodiment of the present invention, and FIG. 2 is a circuit block diagram of FIG. 1. 1--Controlled space, 2--Blower duct, 3-Branch blower duct, 4--Exhaust duct, 5-Discharge duct, 6-Return duct, 7--Intake duct, 8-Air conditioner, 9 〜1
2.17 and 18.20 to 22-detector, 14 to 1
6.19. 23 to 26 - Controller, 27 to 29 - Measurement control terminal, 30 to 35 - Measurement terminal, 36 -
Control terminal device, 37 to 39-driving terminal device, 40-setting terminal device, 41-multiplex transmission line, 42-central control device,
43-operation display device, 45-central control device.

Claims (1)

[Claims] (1) An air conditioning loop is provided that takes outside air together with the exhaust air from the controlled space into the air conditioner, and sends air from the air conditioner to the controlled space. Equipped with a detector that measures the index element as an electrical quantity and a controller that variably controls the state or amount of air blown into the controlled space according to the input amount, and multiplexes the detector and controller in a central control device. An air conditioning control device that is connected to a terminal device that is connected to enable multiple transmission by distinguishing addresses via a transmission line, and is monitored and controlled by a central control device via the terminal device to maintain the air conditioning of the controlled space in a desired state. In the method, an individual address is set on the multiplex transmission line so that it can be transmitted to and from the central controller, and an externally set setting signal is transmitted to the central controller, and the signal is transmitted from the central controller. A setting terminal device for externally displaying the displayed display signal is connected, and the central control device recognizes the setting terminal device by distinguishing the individual addresses and responds to the setting signal of the setting terminal device. An air conditioning control device characterized in that a desired state controlled by the air conditioner can be varied and a display signal can be sent to the setting terminal in correspondence with a setting signal from the setting terminal.