JPS58104439A - Terminal controlling device - Google Patents

Abstract

PURPOSE:To localize troubles and smoothen and accelerate the control operation by constructing the terminal controlling devices of the air conditioning apparatus in a building or the like so that they carry out time schedule control, level control, upper and lower limits surveilance, optimum starting control, power-sparing operation control, valve adjustment, and fire countermeasure. CONSTITUTION:When the terminal controlling devices are connected to the power source and initialized, the test data are accessed to a variable memory RAMt to carry out self-diagnosis. If the result is fount to be abnormal, treatment for abnormality is carried out. If the result is normal, DI and AI are taken in and accommodated in the variable memory RAMt. Then, the terminal controlling device perform time schedule control, level control, upper and lower limits surveilance, optimum starting control, power-saving operation control, valve adjusting control and fire control in accordance with a predetermined program. Then, the devices carry out delivery of AD and DO, and carries out judgement as to whether or not there is an outside setter. If it is found that there is no outside setter, the devices begin to carry out data transmission and receipt. If there is outside setter, the PST treatment is carried out, and thereafter troubles can be localized and the control can be smoothened and rapidified.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a terminal controller used in an air conditioning control device for a building or the like.

Conventional air conditioning control equipment consists of a central control unit using a computer, etc., and local converters distributed throughout the premises, and the central control unit performs judgment processing based on data from each local converter. The results were sent to the local converter to control each part of the air conditioning equipment, and control decisions were made all at once in the central control unit, so if the central control unit failed, all air conditioning equipment This had the disadvantage that it was impossible to control the equipment.

In addition, since the central control unit and each local converter are connected by individual wires or by several busbars, the amount of wire is as large as 4. In addition to the high line labor cost, it is not easy to change the configuration by adding a local converter, and it also has disadvantages such as not being able to freely combine the device configuration.

In addition, in the past, all decisions were made in the central control unit, which resulted in a large amount of information being processed, a lot of operating time required for processing, and the disadvantage that various controls could not be carried out smoothly and quickly. There is.

The present invention has the purpose of fundamentally solving the above-mentioned drawbacks of the conventional technology, and provides judgment and control functions to terminal controllers that transmit and receive data with the main controller and locally control each type of air conditioner. It is an object of the present invention to provide a highly effective terminal controller having various control functions that are distributed so as not to cause a general uncontrollable state and to perform control smoothly and quickly.

Hereinafter, the present invention will be explained in detail with reference to figures showing examples.

Figure 1 shows the block diagram of the entire configuration, and the main controller MCT
TE terminal equipment such as keyboards and cathode ray tube display devices.
The main controller MCT is connected to the sub-controllers SCT+ to SCTm through a common transmission line La, and data can be freely input by the operator and data can be output to the operator by transmitting and receiving data. and the monitoring ill controller SCTo, and transmit predetermined data thereto, and each sub-controller SCT+
~SCTm.

It receives data from 5CTo.

Further, each of the sub-controllers SCT+-SCTm connects each of the plurality of terminal controllers TCTII-TCT+n 5TCT21-TCT by each transmission line Lkl+ ""' Lbm.
It is connected to TCIhr+ to TCTmrl, and relays data transmission and reception between these and the main controller MCT as necessary, and each terminal controller TCTo
= TCTmn is connected to temperature sensor T1 humidity sensor H and status contacts of fan sweater FM as local force sensors, and also controls various air conditioners; Tomo control valve P, 4V and electromagnetic switch ,・□
,・MS etc. are connected, □・Each terminal controller TCTts~TC
Tmn makes control decisions based on data transmission and reception with the sub-controllers SCT+-SCTm, the detection forces of each sensor T and H, and the status contact of the fan motor FM, and controls the motor valve MV and electromagnetic switch MS. By sending control outputs to the air conditioners, etc., each type of air conditioner can be locally controlled.

In addition, the fire monitoring device F is installed in the monitoring sub-controller 5CTo.
Monitoring information other than the air conditioner is provided from the SU, the power control unit RPC, the generator control unit GNC, etc., and this information is transmitted as data as necessary.

FIG. 2 is a block diagram of the main controller MCT, which includes a processor CPUm such as a microprocessor, a fixed memory ROMm, and a variable memory RAMm.

A transmission circuit TRXm and an interface IFm are arranged, and these are connected by a bus line BUSm.A processor CPUm executes instructions stored in advance in a fixed memory ROMm, and is connected to a sub-controller SCT! via the transmission circuit TRXm. ~SCTm.

The data transmitted and received with the 5CTo and the data transmitted and received with the terminal equipment TE via the interface IFm are accessed as necessary on the CC variable memory RAMm.

FIG. 3 shows sub-controllers SCT+ to SCTm, SCT.

Like the main controller MCT, it is centered around a processor CPU5, a fixed memory ROM5°, a variable memory RAM+s, and a transmission circuit TRX81%T.
In addition to placing them around the RXag k, these are connected to the bus line BUS.
Based on the instructions stored in the fixed memory ROMa, the transmission circuits TRX+ and T
Main controller MCT and each terminal controller TCT+ via RXs
+ to TCTmn while accessing the variable memory RAM 5 for necessary data, or transmit monitoring information to the variable memory: a
It is designed to transmit while accessing AMs.

FIG. 4 is a block diagram of the terminal controllers TCTl+ to TCTmn, which, like the main controller MCT, are centered around a processor CPUt as a control unit, a fixed memory ROMt, a variable memory RAMt, and a transmission circuit TRXt.
The interfaces IFtl and IFt are arranged around the periphery, and these are connected by a bus line BUS t.
gramable Read 0nly Memory
,) Write memo using! A JPROM is provided, and it is connected to the bus line BUSt via a writer (write circuit) WRT for writing data to it, and data is accessed through this to the write memory FROM, and once the write operation is disabled. The stored data is retained forever until it is erased by means such as ultraviolet irradiation or electrical means.

In addition, the variable memory IJRAMt is connected to the +V side of the power supply with a 1t thick capacitor '9' Cps 75-11U, and even if the main power supply fails, 1t can be stored in the variable memory RA for about 48 hours. The data will not be lost. However, the same effect can be obtained even if a battery is used instead of the capacitor Cps.

Note that the processor CPUt has a fixed memory ROM t
Executes instructions stored in the controller, transmits and receives data to and from the sub-controllers SCT+ to SCTm via the supply circuit TRXt, and receives digital data input DI and analog data input AI from each sensor and status contact via the interface IFtl, as well as digital data output DO and analog data output A for each control part.
Sends the required data to the variable memory RA.
I am accessing Mt, but the important data is written by Writer W.
RT is fixedly stored in the write memory FROM, and the processor CPU t makes control decisions according to each data DI and AI indicating the detection force of each sensor and the status of the status contact, and the transmission/reception data. In addition, the data outputs Do and AO are sent out as control outputs.

In addition, a small and portable setting device PST having a keyboard and a character display is connected to the connector CN via the interface IFtz as necessary, and the processor cPUt responds to the operation of this setting device to set the variable immutable value.
The contents of the JRAMt and write memory PROM can be displayed, and data can be updated or new stored thereon freely.

FIG. 5 is a comprehensive flowchart showing the control operation by the processor CPUt of the terminal controllers TCT+1 to TCTmn. Upon turning on the power or recovering from a power outage, 5TART" is followed by 1Initialization' for setting the initial state. Accesses test data to variable memory RAMt, determines whether access is normal or not, determines whether set value data is stored in variable memory RAMt, and performs variable memory upon recovery from power outage. Useful for determining whether the total number of bits of data stored in RAMt is the same as before a power outage, etc. ◆Self-diagnosis
If you are deaf or have an abnormal foot? If “ is YES, the contents of the write memory FROM are transferred and transferred to the variable memory RAM.
After performing 1 abnormality countermeasure processing such as newly storing data in t, and transmitting and receiving 1 data,
It notifies the main controller MCT of the occurrence of an abnormality via the main controller MCT via Tm, receives necessary data from the main controller MCT, and stores it in the variable memory RAMt.

If 1 abnormality ↑ is NO, digital data input 'DI import' and analog data input 'AI import' are performed, and these are stored in the variable memory RAMt, 1 time schedule control described later, - Performs ``level control'', 1. upper and lower limit monitoring, 1. optimal starting control, ◆power-saving operation control, ◆adjustment control, ◆fire control, etc., and sends out digital data output according to these results. After performing the analog data output 'AO Send', the presence or absence of the setting device PST is determined by 'PST Check', and the %PST is set? If " is NO, the process immediately moves to ◆Data transmission/reception", but if this is YES, the data is sent to the setting device PST, and the setting device PST
In addition to performing one-to-PST processing such as storing data from the
Store t and repeat the above operations.

FIG. 6 is a timing chart showing the ON/OFF control of the power to the air conditioner and the corresponding temperature control status. Based on "time schedule control", the power to the air conditioner is turned on as shown in Figure 6 TS,
The OFF condition is set, and the use start time t of a specific part of the premises is set.
The power is turned on only between 8 and end of use time te.
is permissible.

That is, as shown in the flowchart of "1 time schedule/I41i control" in FIG. 7, the variable memory RAM t
is stored as a weekly program.

After reading out the usage start time t8 and the usage end time te, it is checked whether they match the time measured by the clock configured inside the processor CPUt, and the result is 'ON time?' “If YES, set the Hayabusa time flag” and set the 1ON time? If ゛′ is NO,
Immediately perform a 1-time flag reset.

Note that the clock of the processor CPUtM is connected to the main controller MCT as required! The time is calibrated by ≠-data transmission/reception.

Fig. 8 is a flowchart of "Level Control", which shows the demand level of predetermined importance for the terminal controller 'rc'r-TCTmn, the power consumption status, and the emergency generator in the event of a power outage. The own demand level is compared with the command level determined according to the operating status and the situation such as power outage recovery, and the command level given from the monitoring sub-controller 5CTo via the sub-controllers SCT+ to SCTn. If the temperature drops to a low level, the air conditioner will stop operating.

In addition, the command level and demand level are divided into those depending on the power consumption situation, those at the time of power recovery after a power outage, and those during generator operation, and the above-mentioned level comparison can be done for each condition. It is done.

In other words, in Figure 8, is there a deafening power outage? If `` is NO, then the power demand level is compared to the military command level, and the level is compared according to the power consumption situation; if YES, the air conditioner is immediately adjusted to "Flag Reset", whereas in NO of 1 power command level > power demand level, level comparison was performed at the time of power outage recovery after power outage using 1 power failure recovery command level > power failure recovery demand level. Well, if this is YES, the process moves to "Level Flag Reset" if the operation is in progress. If this is No, if the N time schedule is in operation, the time flag shown in Figure 7 is checked by "Level Flag Set" and the air conditioner is turned off. Set the level flag to turn ON.

Also, Shizuku is having a power outage? If `` is YES, 1 generator command level > generator demand level'' is used to compare the levels during generator operation, and if this is YES, the level flag is reset if the ship is in operation, and if this is NO, the level flag is reset. If it is a cram school time schedule period, move to "Level flag set"0. Note that these are performed for each control item, so ◆ All control items light? The above operations are repeated until `` is YES.

FIG. 9 is a flowchart of ``1 Upper and Lower Limit Monitoring'', in which the alarm upper limit value TI (A and alarm lower limit value TL^) in the temperature control situation TC shown in FIG. 6 are monitored and the actual value Tp reaches these. For example, data indicating a warning is transmitted to the main controller MCT.

In other words, one power of the air conditioner is ON? If `` is YES, one unstable period such as the optimum starting period tsu shown in Fig. 6 has passed?'' is YES, and the alarm upper limit value THA and the same lower limit value TLA stored in advance in the variable memory RAMt are set. , actual room temperature value Tp under the temperature sensor
and ◆TP >THA”,' T p (TLAu
Comparing these +7) If YES, 1 alarm flag is set and a fight alarm is sent by data transmission to the main controller MCT.However, if these are NO, the falcon alarm flag is reset and the return is made. Send a message.

In addition, in Fig. 6 and Fig. 9, the actual indoor temperature value Tp is targeted, but it can also be applied to various necessary physical quantities such as indoor humidity, pressure and flow rate of each part of the air conditioner. .

FIG. 10 is a flowchart of ◆optimal start control.
The purpose is to cause p to reach the precooling target value TPO or the preheating target value TPw-\ at the use start time t8.

Soooo empty! Assuming that the taste start T'' of the 1 machine is YES, the 1 operation time period?'' is judged from the time flag in Fig. 7, and if this is NO, the weekly program in the variable memory RAM t and the actual operation are Based on the data and based on how many days the air conditioning has not been executed, a "correction process" is performed at the end of the first day off, a correction coefficient is determined, and then a "1 start time calculation" is performed.

Note that the starting time tps is the actual measured room temperature at the time of starting.
If R% is the predicted value of the room temperature change coefficient determined according to the indoor thermal conditions, and K is the correction coefficient during holidays, it is expressed by the following formula.

(During cooling) (During heating) Here, K is given by the following equation, where m is the number of consecutive holidays and K' is a set coefficient (for example, about 1.5).

K' is set in advance.

Note that the room temperature change coefficient is the actual room temperature change coefficient kj1 on that day.
Based on the predicted room temperature change coefficient 0 used on that day, the next day's predicted room temperature change coefficient 10 is calculated by the following equation, and correction is performed by learning control.

J, 1=α・0+(1−α) −k j ・・・・・・
...(3) So, α is a coefficient.

・Starting time calculation: After calculating the starting time t'' by calculating equations (1) to (3) using 1'', the starting time tpB is determined by the clock circuit in the processor 8 CPUt and the starting time tpB.
1 start time? ” is YES, then
The start time tpg is maintained by setting the start flag ``1''.

Also, 1 driving time zone? If ``YES'', ◆Start flag reset'' is performed.

However, it is also optional to carry out the optimum stop control disclosed in Optimal Control Method for Air Conditioners J (Japanese Patent Application No. 130741/1982) filed separately by the present applicant.

FIG. 11 is a flowchart of "power saving operation control", whereby the power saving operation SP shown in FIG. 6 is performed.

In other words, first of all, what is the time schedule and operating hours? '' is judged based on the time flag, and if it is YES, each terminal control is started early in the morning, taking into account that intermittent continuous operation will not start before the walls of the building room are sufficiently warmed up. The elapse of the offset period t defined for each device from TCT+t to TCTmn is determined by the offset time elapsed from the first activation time?'', and if YES to this, the new cycle start time? If the answer is YES, check the detection power of the temperature sensor T and check whether the actual room temperature value Tp is between the cooling allowable value TAC and the heating allowable value TAW. ? Judging by “, this is YE
If S, the Hayabusa power saving flag is reset, the air conditioner is not started, and each cycle time tc in Figure 6 is set.
1” OFF period toppl to toFFn during tcn
Establish.

This offset period t. In the first place, in order to average the power angle of the entire building, other sky I! 11 etc. [2] The start times of the cycle times of other air conditioners, etc. are set so that they do not almost match.

Also, ◆New cycle time start time? ” NO, 1
Is the power saving flag being reset? If you answer YES, the minimum stop period determined according to the characteristics of the air conditioner will be reset. ``After judgment, 1 room temperature permissible range here too?'' is determined, and depending on the NO, the air conditioner is turned on, and the air conditioner is turned on, and during each cycle time tci to tcn, the air conditioner is turned on. ON period tos1~j
Define ONn.

Even if Hayabusa's room temperature tolerance range 7'' is YES, has the maximum reset period elapsed? ” is YES,
For the safety of the air conditioner, the power saving flag is set to turn on the air conditioner.

Therefore, the OFF period tOf'F1 is changed every cycle time Tc+-Tcn, which is predetermined as a certain period.
~1;0FF11 is formed, power saving is achieved, and the OFF period toppl is changed according to the actual measured temperature value Tp.
- Since the length of topyll is determined, the actual temperature value T
p is kept within the tolerance range J TAC or dTAw.

Figure 12 is a flowchart of the special adjustment control.
As a result, the valve opening degree of the pneumatic machine and the outside air increase situation are controlled.

That is, a fan motor FM9. in an air conditioner such as a fan coil unit, etc. ．． ．． -Depending on the situation - Turn on the air conditioner? ” 4. I, :・1 Y of this
ES moves to 1 control mode determination'', determines the control mode depending on the season, such as cooling, heating, heat recovery, outside air intake, dehumidification, humidification, etc., or a combination of these, and then switches to control mode. Read the adjustment coefficient corresponding to the value from the variable memory lJRAMt, perform 1 adjustment coefficient setting, perform PIDID calculation up-proportional, integral, and differential calculations to find the control output, and perform temperature drop compensation during dehumidification, etc. After carrying out the interference compensation process, for example, if the valve opening required for dehumidification is 80% and the valve opening required for cooling is 50%, the larger of these, 80%, is selected. ◆High Select''.

Following this, limits such as the maximum valve opening according to the characteristics of the air conditioner are set using ``Opening limit processing'', and the relationship between the valve opening and the flow rate of the fluid passing through this valve is controlled. After straightening the output direction, the output direction is finally determined by one control.
Do the following.

In addition, if 1 air conditioner ONν is No, the "approximately fully closed control output determination for the valve opening degree" is immediately performed.
\1 In addition to the above, ``1 fire control'' shall be carried out,
When information about a fire outbreak is given from the monitoring sub-controller 5CTo, a fire flag is immediately set in order to prevent the outflow of fire smoke from spreading to other areas and to prevent ventilation from accelerating the combustion of the fire. At the same time, the ventilation damper is closed and this state is maintained until information that the fire has ended is given.

Therefore, when each of the above routines is completed, the final control output is determined according to the status of each flag and the control amount and status, and as shown in Figure 5, the digital data output 1D
Actual control output is sent to the air conditioner by "O sending" and analog data output "AO sending", and the control shown in Fig. 6 is performed locally, as well as the data and control situation involved in these decisions. The data of sub controller S
At CT+-SCTm, each terminal controller TCTtt~
Since it is edited for each TCTmn and is sent and received between the main controller MCT and each terminal controller TCT■ to TCTmn, the main controller MCT always has data indicating the latest control status in its variable memory. − is stored in
While this can be confirmed by the terminal equipment TE, the terminal equipment T
The latest data given from E is sent to each terminal controller TCT1.
It will be stored in the variable memory RAMt from t to TCTmn.

However, since each terminal controller TCTII to TCTmn stores basic control data in the variable memory IJ RAMt and write memory PROM, the main controller MCT
, sub-controller SCT+'' SCTm and each transmission line L
a, any one of Lbl-Ll)m, or
Even if all of them fail, each terminal controller TCTII~T
CTmn's unique operation allows local control of each air conditioner to be performed without any problems.

In addition, the main controller MCT and the sub controller 5CTl"SCTm
are connected by a common transmission path Lm, and the sub controller SCT+"SCTm and each terminal controller TCTtt~TC
Tmn are connected by individual transmission lines Lbs to Lbm, so if the sub controllers 5CTI'' to 8CTm are installed near each group of terminal controllers TCTII to TCTmn, the wiring amount can be reduced. The number of man-hours required for wiring can be reduced, and since the terminal controller TCT and the sub-controller SCT can be provided as necessary, it is extremely easy to change the overall configuration.

Note that the control judgment function is performed by each terminal controller TCT1t to TCT1t.
Since it is distributed to CTmn, the judgment processing speed is improved and control can be performed smoothly and quickly.

In addition, the order of each flowchart may be changed as appropriate depending on the conditions, or unnecessary steps may be omitted.
It is also optional to omit CTm%5CTo, and the equipment to be controlled can include various cooling and heating machines, as well as total heat exchangers used for heat exchange between outside air and exhaust air, boilers, refrigerators, etc. You can choose.

Further, the same effect can be achieved even if a dedicated control circuit made of a combination of various logic circuits is used instead of using a processor as the control section, and the present invention can be implemented in various forms.

As is clear from the above explanation, according to the present invention, distributed control functions are centrally managed, so it is possible to change general data and monitor the control status, and the effects of failure This not only reduces the amount of wiring and wiring man-hours, but also makes it easy to add or change the entire configuration, and the control situation becomes smooth and prompt, making it easier for various applications. Remarkable effects can be obtained in air conditioning control devices.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, in which Fig. 1 is a block diagram of the entire configuration, Fig. 2 is a block diagram of the main controller, Fig. 3 is a block diagram of the sub-controller, and Fig. 4 is a block diagram of the terminal controller. Block diagram, 5th
The figure is a general flowchart showing the control operation by the processor of the terminal controller, and Figure 6 shows the power ON and OFF of the air conditioner.
Timing chart showing control and temperature control status,
Figure 7 is a flowchart of ``6 time schedule control'', Figure 8 is a flowchart of ``level control'', Figure 9 is a flowchart of ``ring upper and lower limit monitoring'', Figure 10 is a flowchart of ``deaf optimum starting control'', Fig. 11 is a flowchart of ``Fi school power saving operation control'', and Fig. 12 is a flowchart of ◆Adjustment 0 mode control''. MCT ----- Main controller, SCT, ~SCTm...@
Fist sub-controller, TCTo~TCTmn φ fist...terminal controller, TE...terminal equipment, T...temperature sensor, H
s Fist: Humidity sensor, Mv: Motor control L F
M...Fan motor, MS...Electromagnetic switch, CPUm, CPUa+CPUt-@...Processor,
ROMm, ROMa, ROMt * * * a Fixed memory, RAMm, RAMa, RAMt ・* a @ Variable memory, TRXm, TRXIII, TRX5g,
TRXt・as-transmission circuit, IFm, ■Ft1. Engineering F
T! ...Interface, wRT ...Fist/Writer, PROM --- Write method, BUSmlBU
SsrBUSt --- Bus bar. Patent applicant: Yamatake Honeywell Co., Ltd. Agent: Takeki Yamakawa (one person) -25-゛Figure 9Figure 10Figure 11

Claims (1)

[Claims] In an air-conditioning control device consisting of a main controller that is connected to a terminal and transmits and receives data from the terminal device, and a terminal controller that transmits and receives data to and from the main controller and also performs local control for each type of air-conditioning equipment. Based on a predetermined time schedule, the machine is given control over the time period in which it is allowed to turn on the power, and a demand level corresponding to the importance of the target equipment. control to stop the operation of the air conditioner when the command level is also low; control to send out an alarm when the actual measurement value is either above the pipe line upper limit value or below the alarm lower limit value; A control that includes the start time of the air conditioner assuming that a specific part of the premises reaches a predetermined temperature target value, a control 3 that operates the power intermittently for the purpose of power saving during the time schedule period, and a %lJ control mode. 1. A terminal controller comprising: a control unit that performs adjustment control that performs predetermined calculations in response to determining the valve opening degree, and control that responds to the occurrence of a fire.