JPS62102053A - Indication of input and output condition of signal collecting and converting device for air-conditioning machine - Google Patents

Abstract

PURPOSE:To facilitate the checking of wiring upon laying, checking upon maintenance or the like by a method wherein a central processing unit, communicating with a central control unit and effecting the control operation of the input and output signals of air-conditioning equipments to be controlled, is provided at the side of a signal collecting and converting device while an indicator, indicating the operating condition, the alarm and the condition of control of the air-conditioning equipments, is attached to the signal collecting and converting device. CONSTITUTION:Continuous numbers with respect to respective input and output factors are provided in a column 29 on the surface of a panel of a signal collecting and converting device, LEDs with respect to each factor are provided on the column 30 so as to indicate the conditions of respective factors and the names of the factors are written on the column 31. According to this method, the conditions of input and output are indicated by the LEDs from No.1 to No.23 whereby the checking of wiring upon laying, checking upon maintenance and the like may be facilitated. The integrated time of operation is operated through a central processing unit CPU 20 by operating the ON times of necessary factors while the result of the operation is indicated by liquid crystal indicators or the like. According to this indication, a controller or the like can see the ON time of each equipment at the side of an air- conditioning machine without going to a central control unit whereby the estimation of generation of a trouble, the replacing timing of a part and the necessity of inspection may be decided.

Description

Detailed Description of the Invention (Field of Industrial Application) This invention relates to signal collection and conversion devices, particularly various signal collection and conversion devices that perform data input/output control, etc. between various devices and control devices in an air conditioning control system. This relates to a method of displaying device operating status.

(Prior Art) Fig. 4 is a block diagram showing an example of the configuration of a conventional air conditioning control system. , for example, temperature sensor 31. Data from the humidity sensor 32, contacts 33, etc. is sent to the central control device 1.

The central control device 1 is equipped with a microcomputer, etc., and performs control calculations using an internal program based on input data, etc., and starts/stops and sets the equipment via the signal collection and conversion device 2 via signal lines t1 to tn. Outputs a value signal. In the central control device 1, the geo-receiver can monitor collected data and control output status using the CRT II and keyboard 12.

Figure 5 shows the channels of the signal collection and conversion device 2, which are installed on the base 4, power and transmission terminal block 5, external input/output terminal block 6, power switch 7, fuse 8, integration reset switch. 9. A power indicator light 10 and a signal transmission/reception indicator light 1 are visible.

(Problems to be Solved by the Invention) However, in the air conditioning control system with the above configuration,
When performing initial installation adjustments, maintenance adjustments, and failure checks, input signals such as the status of each point, that is, what status signals each device is outputting, and what control signals are output from the central controller 1 are required. The only way to confirm the output signal is by the adjuster using a tester or by checking the display on the central control device 1, which is a complicated and time-consuming process. In addition, when the coordinator conducts periodic patrol checks, the content of maintenance for each device is changed depending on the operating time of each device. Because we had to communicate with each other, there were communication errors and the work became complicated. Furthermore, since the signal collection and conversion devices 21 to 2n and each device are manufactured separately, incorrect wiring is likely to occur due to miscommunication, individual wiring, etc. Until now, this check could only be performed using a tester.

Furthermore, if you want to monitor the input/output status and cumulative operating time on the signal collection and conversion device side for checking for incorrect wiring, maintenance adjustments, etc., you may need to install a display device for monitoring separately from the signal collection and conversion devices 2t to 2n. , it was necessary to install a totalizing time meter to display the operating time of the equipment. In this case, since the signal collection and conversion devices 21 to 2n and the monitoring display device and cumulative time meter are separate devices, the device status is displayed by the central control device 1 via the signal collection and conversion devices 21 to 2n. - The status display and operating time of the separately installed monitoring display device and totalizing time meter sometimes differed due to incorrect wiring, totalizing errors, etc.

Accordingly, an object of the present invention is to provide a display method that allows the input/output status of various devices and the total operating time to be easily monitored on the signal collection/conversion device side.

(Means for Solving the Problems) In order to solve the above problems, the present invention communicates with a central control device on the signal collection and conversion device side and performs control calculations on input/output signals of the air conditioning equipment to be controlled. Equipped with a central processing unit,
The state of the signals input and output to the signal collection and conversion device and the cumulative operating time signal obtained by integrating these signals can be easily monitored using LEDs, liquid crystal displays, etc.

(Function) In this way, the signal collection and conversion device is equipped with a display that shows the operation status, alarm, and control status of the air conditioner, so the display on the Nero control device that shows the status of each signal with a tester is done as before. Wiring checks during construction and maintenance can be easily performed without having to check. Therefore, the above-mentioned problem can be eliminated.

(Embodiment) FIG. 1 is a block diagram showing an embodiment of the input/output status display method of the present invention.
1. RAM 22 for storing data etc., display unit 23 for displaying, transmission interface 24 for communicating with host equipment, input ink face 25 for inputting data from equipment, output interface for outputting signals to equipment. 2
6 is connected, and based on data from the central control device 1 (see FIG. 4), output-controlled devices and device status are transmitted to the central control device 1.

FIG. 2 is a block diagram showing an example of the display unit 23, in which the display ink face 28 and the display unit 23 are connected to the pass line 22 from the central processing unit CPU 2 o, and the device information sent from the pass line 27 is connected to the pass line 22 from the central processing unit CPU 2 o. Operating status data is displayed on display section 2
3 is displayed on the LED 23a above. The display ink face 28 is a converter selection circuit 28
A device selection circuit 28 consisting of a and a latch circuit 28b
a is a latch circuit 28b in response to a display section selection signal sent by the address path 27a in the Z line 27.
In response to this signal, the latch circuit 28b latches the operating state data sent through the data bus 27b in the pass line 27, and displays this latched signal on the display section 23.

When the object of air conditioning control is constant, that is, when the input and output points are constant, for example, in air conditioning control for an electronic exchange, the connections between the input interface 25 and the output interface 26 and the equipment are shown in FIG. If the wiring is connected by a connector instead of the terminal block as described above, incorrect wiring can be prevented and the work will be easier.

FIG. 3 shows the 74-channel plane of the signal collection and conversion device.

A serial number is assigned to each input/output item at 29.
At the number 30, there is a LE to indicate the status of the item.
D is attached to each item, and the item name is written at 31. JPFLl.

2 allows you to see the on/off status of the two blowers. In other words, if blower 1 is on, the LE of ml
D lights up and blower A2 is turned on.
The ED is designed to emit light.

If it is off, the LED will not emit light, so you can see the operating status of the blower at a glance. Similarly, from A3 to 5 are the operating status of the compressor, humidifier & 1-A2, and from A6 to A22 are the air conditioner collective failure, outdoor unit power supply, indoor unit AI power supply, indoor unit & 2 power supply, and control circuit power supply. , leakage, blower protection thermostat No. 1-A2゜Compressor overcurrent, refrigerant high pressure, compressor protection thermostat, discharge pipe thermostat, humidifier high water level 1, A2. Drain tank A1, A2
, alarm for compressor test operation, and control status of air conditioner activation can be seen at a glance in the cup 23. In addition, at the serial number indicated by numeral 32, the total operating time 33 of each type is displayed on the liquid crystal display, and the signal name is written next to it at numeral 34. Items that do not require cumulative operation time are covered with a blind plate 35. Red LE for digital inputs 1 to A 22
D is used, and an Iku LED is used for the Dinotal output shop 23 so that input and output can be distinguished with the - eye. For the signal name, paste a sticker and write the name on it.
Place a blinding board over the LED without pasting anything in areas that are not in use.

You can see the input/output status with the LEDs from A1 to Ya23.
Wiring checks during construction and maintenance can be easily performed.

The cumulative operating time is the on-time of the necessary items in the central processing unit C.
Calculate ↓ on PU 2 o and display it on a liquid crystal display or the like. Based on this display, the adjuster, etc.
You can see the on-time t of each device on the air conditioner side without having to go to the air conditioner, predict failures, determine when to replace parts, and determine the need for inspection.

In addition, if the upper central control unit 1 goes down or the communication line is disconnected, the input/output status could only be checked with a tester, but the signal collection and conversion devices 21 to 2n
The operating status, alarms, and control status can be seen at a glance using the display. Note that although an LED and a liquid crystal display have been described as display devices, other display elements may be used.

(Effects of the Invention) As described in detail above, according to the present invention, by attaching a display to the signal collection and conversion device to indicate the operation status, alarm, and control status of the air conditioner, wiring checks and maintenance during construction can be performed. You can easily check the time.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the input/output status display method of the present invention, FIG. 2 is a block diagram showing an example of the display section, and FIG. 3 is a diagram showing the channel side of the signal collection and conversion device. FIG. 4 is a block diagram showing an example of the configuration of a conventional air conditioning control system, and FIG. 5 is a diagram showing a front view of a conventional single-word collection and conversion device. DESCRIPTION OF SYMBOLS 1... Central control device, 21-2o... Signal collection conversion device, 31... Temperature sensor, 32... Humidity sensor,
33...Contact, 4...Installation is at pace, 5,6...
Terminal block, 7... Power switch, 8... Heath, 9
...G IJ upper set switch, 10...Power indicator light, 11...Signal transmission/reception indicator light, 2θ...Central processing unit (CPU), 21...ROM, 22...RAM
, 2J...Display section, 24...Transmission interface,
25... Input ink face, 26... Output interface, 27... Pass line, 28... Display section interface, 28a... Device selection circuit, 28b.
...Latch circuit. Patent applicant Nippon Telegraph and Telephone Corporation Block diagram of the display section Fig. 2 Figure 3: E-channel side of the signal-like percentage conversion device Fig. 4 Block diagram of the conventional air conditioning control system

Claims (1)

[Claims] A central processing unit that communicates with the central control unit to control and calculate the input/output signals of the air conditioning equipment to be controlled, a ROM that contains control programs, etc., and a RAM that stores data, etc.
, a signal collection and conversion device that is equipped with a display unit that displays information, an input interface that inputs data from transmission interface equipment that communicates with host equipment, and an output interface that outputs signals to equipment. an input signal representing the operating state and alarm of the air conditioner, an integrated operation time signal of the air conditioner obtained by integrating the air conditioner operating state signal by the collection and conversion device, and an output signal for controlling the air conditioner for each signal. An air conditioner characterized in that the input/output status can also be monitored on the signal collection conversion device side by providing an item name display section and a display element indicating the status for each signal corresponding to the item name. Input/output status display method for signal collection and conversion equipment.