JPH05106908A - Air conditioning system - Google Patents

Abstract

PURPOSE:To control an air conditioner by the outputs of a plurality of sensors without increasing the number of wirings. CONSTITUTION:A main controller 1 is connected to a plurality of peripheral units 2-4 by a branch method through a transmission line Ls which consists of a pair of lines. The output of sensor unit 5 provided with a sensor is inputted to the peripheral unit 2 to transmit to the main controller 1 monitoring data which correspond to the value of detection of the sensor. And the main controller 1 supplies the peripheral unit 3 with the control data which are the control values of an air conditioner based on monitoring data. The peripheral unit 3 regulates the output of the air conditioner 6 which is connected as a load based on control data. Between the main controller 1 and peripheral units 2-4, the data is transmitted by a time division multiple system. Since, if an increase in the number of sensors results in an increased installation of peripheral unit 2, it only requires to connect to the transmission line the peripheral unit 2 to which the sensor is connected, there is no increase in the number of wirings.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning system in which various amounts of indoor environment controllable by the air conditioning device are detected by a sensor and the output of the air conditioning device is adjusted based on the value detected by the sensor. It is about.

[0002]

2. Description of the Related Art Conventionally, a temperature setting unit and a humidity setting unit incorporated in an air conditioner set target values for indoor temperature and humidity, and a sensor incorporated in the air conditioner detects indoor temperature and humidity. However, the output of the air conditioner is feedback-controlled so that the indoor temperature and humidity approach the target values based on the values detected by the sensors. There is also provided a sensor which is connected to an air conditioner via a cable to detect temperature and humidity at a place distant from the air conditioner.

[0003]

By the way, in the above-mentioned air conditioner, it is usual to provide a sensor for each air conditioner. On the other hand, in the case of performing air conditioning over a relatively wide area such as heating and cooling of buildings and district cooling and heating, and when monitoring temperature and humidity by sensors,
There are cases where it is desired to provide sensors at multiple locations. However, if the sensors are provided at a plurality of locations according to the conventional configuration, the sensors and the air conditioner are connected by cables, respectively, so that the number of cables increases as the number of sensors increases.

An object of the present invention is to solve the above-mentioned problems, and a plurality of data are connected in a branching manner through a transmission line consisting of a pair of lines, which is related to a detected value of a sensor and a control amount of an air conditioner. The present invention aims to provide an air conditioning system in which the number of cables does not increase even when a plurality of sensors are provided by exchanging data between the terminal device and the main control device.

[0005]

According to the invention of claim 1, in order to achieve the above object, different addresses are set and the main control unit is connected in a branching manner via a transmission line consisting of a pair of lines. In addition, the main control unit is equipped with a plurality of terminals for transmitting and receiving data to and from the main control unit by transmitting a transmission signal including address data in a time division multiplex system, and control by the air conditioner is provided. The detection values of the sensors that detect various quantities related to the possible indoor environment are input to the first terminal device and transmitted to the main control device as monitoring data,
The control data based on the monitoring data is transmitted from the main controller to the second terminal so as to adjust the output of the air conditioner connected as a load to the second terminal.

According to the second aspect of the invention, the sensor is a case attachable to a mounting frame having a width twice that of the mounting frame for three large squares which is standardized for embedded wiring equipment. It is installed. According to the invention of claim 3, the sensor is attached to a case that can be attached to a mounting frame for three large squares that is standardized for an embedded wiring device.

[0007]

According to the structure of claim 1, the main control unit and the plurality of terminals are connected in a branching manner via a transmission line consisting of a pair of lines, and data is transmitted in a time division multiplexing system.
Even if the number of terminals is increased, it is only necessary to connect the terminals to the transmission line, and the number of cables does not increase with the number of terminals. Further, the detection value of the sensor is input to the first terminal device, and the monitoring data corresponding to the detection value of the sensor is transmitted to the main control device, and the main control device is the control amount of the air conditioner based on the monitoring data. Since the control data is transmitted to the second terminal device and the output of the air conditioner connected as a load is adjusted based on the control data in the second terminal device, it goes without saying that based on the detected value of the sensor. The output of the air conditioner can be adjusted. Therefore, even when the number of sensors increases and the number of terminals is increased, it is sufficient to connect the terminals to which the sensors are connected to the transmission line, and the cable for connecting the sensors to the air conditioner can be used. The number of wires does not increase, and the wiring is well organized.

The structures of claims 2 and 3 are preferred embodiments, and the size of the case of the sensor unit is set so that a standardized mounting frame for wiring equipment can be used. It is possible to carry out the mounting work by diverting the mounting member for the wiring equipment that has been provided conventionally, and there is no need to newly design the mounting member.

[0009]

【Example】

(Embodiment 1) The present invention has a basic configuration as shown in FIG. That is, a plurality of terminals 2 to 4 to which addresses are individually set are connected to the main control device 1 via a transmission line Ls including a pair of lines. The terminal device 2 is a terminal device for monitoring, creates monitoring data based on the analog input from the sensor unit 5, and the address data included in the transmission signal from the main controller 1 is set in the terminal device 2. If the address matches, the monitoring data is sent to the main controller 1
It will be sent back to. On the other hand, the terminal device 3 is a control terminal device. When the air conditioner 6 is connected as a load and the address data included in the transmission signal from the main control device 1 matches the address set in the terminal device 3. The output of the air conditioner 6 is adjusted by the control amount set based on the control data included in the transmission signal.
Further, the terminal device 4 is a terminal device for monitoring and includes a switch, creates monitoring data corresponding to ON / OFF of the switch, and the address data included in the transmission signal from the main control device 1 is sent to the terminal device 2. When it matches the set address, the monitoring data is returned to the main control device 1.

More specifically, from the main control unit 1, the transmission signal Vs having the format as shown in FIG.
Is transmitted to the transmission line Ls. That is, the transmission signal Vs
Is a start pulse ST that indicates the start of signal transmission, mode data MD that indicates the mode of the signal, address data AD that calls the terminals 2 to 4, control data CD that controls the output of the air conditioner 6, and transmission errors are detected. It is a multi-pole (± 24V) time division multiplex signal composed of a checksum data CS and a signal return period WT that sets a return period of monitoring data from the terminals 2 to 4, and data is transmitted by pulse width modulation ( FIG. 2B). In each terminal unit 2-4,
When the address indicated by the address data AD of the transmission signal Vs received via the transmission line Ls coincides with the preset address, the control data CD of the transmission signal Vs is fetched and the signal of the transmission signal Vs is returned. In synchronization with the period WT, the monitoring data signal is returned as a current mode signal (a signal that is sent by short-circuiting the transmission lines Ls via a suitable low impedance).

On the other hand, the main control unit 1 creates a transmission signal Vs in which address data is cyclically changed to generate each transmission signal Vs.
4 to 4 are sequentially accessed. That is,
The terminals 2 to 4 are called up at regular intervals, and the control data CD and the monitoring data are transmitted by the time division multiplexing method. In the main controller 1, the terminals 2, 4
Based on the monitoring data returned from the control data CD, the control data CD to the terminal device 3 for controlling the air conditioner 6 as a load is created, and the control data CD is transmitted to the terminal device 3 via the transmission line Ls. Thus, the air conditioner 6 is controlled. The main controller 1 and the terminal 3 are provided with an air conditioner 6
It is stored in the same housing as. Here, each terminal device 2-4
Then, the transmission signal Vs which is constantly transmitted to the transmission line Ls is rectified and smoothed to be used as a power source. In addition, the air conditioner 6
Is supplied from a separate power supply AC.

By the way, the sensor unit 5, as shown in FIG. 3, is provided with a sensor 11 for detecting various quantities of the indoor environment, such as temperature and humidity, which can be controlled by the air conditioner 6. The output of the sensor 11 is the input / output unit 1
It is input to the terminal device 2 via 6. For example, sensor 1
If the output of 1 is a current output and is 4 to 20 mA, the analog value as it is is input to the terminal device 2, and the terminal device 2 quantizes into 31 steps from 0 to 30 and creates control data. To do. In this way, the analog value detected by the sensor 11 is converted into a digital value and transmitted to the air conditioner 6, so the sensor 11 and the air conditioner 6
It is less susceptible to noise even if the distance between and is large. The sensor unit 5 includes an operation switch 12 for instructing start / stop of the air conditioner 6, an ascending switch 13a for giving a target value for various amounts of the indoor environment controlled by the output of the air conditioner 6 such as temperature and humidity, and a descending switch. A switch 13b, a display unit 14 for displaying the set target value and various amounts, etc. are provided. The operation switch 12, the raising switch 13a, and the lowering switch 13b are connected to the input / output unit 16 via the switch control unit 15. Here, the switch control unit 15 is configured so that the target value can be raised by operating the raising switch 13a, and the target value can be lowered by operating the lowering switch 13b. As will be described later, the display unit 14 is formed by arranging a large number of light emitting elements in a row, and a value detected by the sensor 11
The detection value and the set value are indicated by turning on the light emitting element at the position corresponding to the set value set by the up switch 13a and the down switch 13b.

Regarding the terminal 4, only a switch corresponding to the operation switch 12 is provided so that only the start / stop of the air conditioner 6 can be operated. The case 20 of the sensor unit 5, as shown in FIG. 4 and FIG.
The dimensions are set so that the mounting frame 30 having a width twice that of the mounting frame for three large polygons standardized by the IS standard or the like can be attached. Further, four engaging claws 21 are provided on both side surfaces of the case 20 so as to be attached to the mounting frame 30 having a width twice that of the mounting frame for three large polygons. That is, the mounting frame 3 formed in a rectangular frame shape
A part of the case 20 is inserted into an opening window (not shown) of No. 0, and the engaging holes 31 formed on both side pieces of the mounting frame 30.
The case 20 can be attached to the attachment frame 30 by inserting the engaging claw 21 into.
A long hole-shaped through hole 32 is formed in the mounting frame 30, and a box screw inserted through the through hole 32 is attached to the wall surface W.
It can be fixed to the construction surface by being screwed into an embedded box B such as a switch box embedded in. At this time, the case 20 is housed in the embedding box B, and only a part of the front surface side of the case 20 is exposed on the wall surface W.

An inner decorative plate 25 is mounted on the front surface of the case 20. The inner decorative plate 25 is formed such that the outer peripheral edge thereof is larger than the outer peripheral edge of the front surface of the case 20 and smaller than the outer peripheral edge of the mounting frame 30, and has an opening at a portion corresponding to the operation portion and the display portion. is doing. Further, connecting legs (not shown) are provided on the rear surface of the inner decorative plate 25 so as to be fixed to the mounting frame 30 by engaging the tip ends of the connecting legs with the mounting frame 30. An outer decorative plate 26 is provided on the outer peripheral side of the inner decorative plate 25.
Is provided. The outer decorative plate 26 is adapted to be coupled to the mounting frame 30 by a plate screw that is screwed into a screw hole 33 formed in the mounting frame 30. With the inner decorative plate 25 attached to the mounting frame 30, the through hole 32
Is almost covered by the inner decorative plate 25, and the screw holes 3
3 is exposed.

On the front surface of the case 20, a sensor case 22 accommodating the sensor 11 is provided in a protruding manner, and an operation switch 12 composed of a sheet-like switch, a raising switch 13a,
The operation part of the lowering switch 13b is exposed. Further, a large number of light emitting elements arranged in a line as the display unit 14 are arranged.
As shown in FIG. 5, the sensor case 22 supports the sensor 11 in a state of being floated from the front surface of the case 20 by a support 22a, and the air is passed between the sensor case 22 and the case 20. Information about an air flow can be taken in by a sensor, and information about radiant heat can be taken in from the front surface of the sensor case 22. If a temperature sensor is used as the sensor 11 to capture such composite information, it is possible to obtain temperature information in which room temperature, radiant heat, and air flow are integrated, and the temperature sensor is combined with another sensor such as a humidity sensor. If is used as the sensor 11, more complicated information can be detected.

By the way, in the above embodiment, the main controller 1
Has shown an example in which data is transmitted by a synchronous time division multiplex method in which each of the terminals 2 to 4 is cyclically accessed, but the main controller 1 is provided with a dummy signal transmitting means and an interrupt processing means, and It is also possible to transmit data by the asynchronous time division multiplexing method so that the main controller 1 individually accesses each of the terminals 2 to 4 only when the interrupt signal is generated from the terminals 2 to 4. That is, the dummy signal transmitting means sets the transmission signal V in which the mode data MD is set to the dummy mode.
s is constantly transmitted, and the interrupt processing means interrupts by collectively accessing a plurality of terminals 2 to 4 when an interrupt signal is generated from the terminals 2 to 4 in synchronization with the start pulse ST. Address data is sent back as monitoring data from the terminals 2 to 4 which have generated the signal, and the terminals 2 to 4 which sent the address data are accessed to send back the monitoring data.

With such a configuration, in the terminal 2,
An interrupt signal may be generated when the operation switch 12, the up switch 13a, and the down switch 13b are operated, and an interrupt signal may be generated when the detection value of the sensor 11 changes beyond the width of the quantization step. .. Further, in the above embodiment, the main control device 1 and the terminal device 3 are incorporated in the same housing as the air conditioning device 6, but the main control device 1 and the terminal device 3 are provided separately from the housing of the air conditioning device 6. You may do it. In addition, the terminal device 2 in the main controller 1
In order to set the correspondence between the four control devices, an external computer device or the like can be connected to the main control device 1 to update the internal data of the main control device 1. Further, the analog output from the sensor unit 5 is input to the terminal device 2. However, after converting the analog output of the sensor 11 into a digital signal inside the sensor unit 5, the digital signal is given to the terminal device 2. You can

(Embodiment 2) In this embodiment, as shown in FIG. 6, the size of the case 20 of the sensor unit 5 is set so that it can be attached to a mounting frame for three large polygons which is standardized by JIS standards or the like. It was formed. Except for the dimensions of the case 20 and the arrangement of the operation switch 12, the up switch 13a, the down switch 13b, the display unit 14, and the sensor case 22 on the front surface of the case 20, the basic configuration is the same as that of the first embodiment. The operation is similar to that of the first embodiment.

[0019]

According to the invention of claim 1, since the main controller and the plurality of terminals are connected in a branching manner via a transmission line consisting of a pair of lines, and data is transmitted in a time division multiplexing manner,
Even if the number of terminals increases, it is sufficient to connect the terminals to the transmission lines, and there is an advantage that the number of cables does not increase with the number of terminals. Further, the detection value of the sensor is input to the first terminal device, and the monitoring data corresponding to the detection value of the sensor is transmitted to the main control device, and the main control device is the control amount of the air conditioner based on the monitoring data. Since the control data is transmitted to the second terminal device and the output of the air conditioner connected as a load is adjusted based on the control data in the second terminal device, it goes without saying that based on the detected value of the sensor. There is an advantage that the output of the air conditioner can be adjusted. As a result, even when the number of sensors increases and the number of terminals is increased, it is sufficient to connect the terminals to which the sensors are connected to the transmission line, and the cable for connecting the sensors to the air conditioner. This has the advantage that the number of wirings does not increase and the wiring is well organized.

In the inventions of claims 2 and 3, the dimensions of the case of the sensor unit are set so that a standardized mounting frame for wiring equipment can be used.
There is an advantage that it is possible to carry out the mounting work by diverting the mounting member for the wiring equipment that has been provided conventionally, and there is no need to newly design the mounting member.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment.

FIG. 2 is an operation explanatory diagram showing a format of a transmission signal in the embodiment.

FIG. 3 is a block diagram showing an example of a sensor unit used in the embodiment.

FIG. 4 is a front view of the sensor unit used in the first embodiment.

FIG. 5 is a side view of the sensor unit used in the first embodiment.

FIG. 6 is a front view of a sensor unit used in the second embodiment.

[Explanation of symbols]

 1 Main control device 2 Terminal device 3 Terminal device 4 Terminal device 5 Sensor unit 6 Air conditioner

Claims (3)

[Claims] 1. A separate address is set and is connected to a main control unit through a transmission line consisting of a pair of lines in a branching manner, and a transmission signal containing address data is transmitted from the main control unit by a time division multiplexing method. By including a plurality of terminal devices for separately transmitting and receiving data to and from the main control device, the first detection value detected by the sensor that detects various quantities related to the indoor environment that can be controlled by the air conditioner The control data based on the monitoring data is input from the main control device to the second control device so as to adjust the output of the air conditioner connected to the second control device as a load. An air conditioning system characterized by being transmitted to a terminal device of. 2. The sensor is mounted in a case attachable to a mounting frame having a width twice as large as a mounting frame for three large squares standardized for an embedded wiring device. The air conditioning system according to claim 1, wherein: 3. The sensor is mounted on a case attachable to a mounting frame for three large squares, which is standardized for an embedded wiring device.
Air conditioning system described.