JPS6257899B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an air conditioning control system that includes a main controller and a terminal controller, and sets and updates data in a memory in the terminal controller.
The present invention relates to a small and portable setting device used to display the contents of a memory.

Conventionally, in general air conditioning control equipment, a central unit using a computer etc. performs the overall control, setting or updating control data,
Or, if you want to view data in the central unit,
This is usually done by terminal equipment connected to the central unit, and if data cannot be set, updated, or displayed on each control terminal, and a failure occurs in the central unit, the data cannot be changed. This creates the disadvantage that settings, updates, and displays are not possible.

The present invention aims to fundamentally solve such drawbacks of the conventional art, and provides an air conditioning control system consisting of a main controller and a terminal controller in which control decisions and processing functions are distributed. The present invention provides an extremely effective portable setting device which is detachably connected and is capable of setting and updating data in a memory in a terminal controller, as well as displaying the contents of the memory.

Hereinafter, details of the present invention will be explained with reference to figures showing examples.

Figure 1 shows a portable setting device (hereinafter referred to as the setting device)
This is a block diagram showing the entire configuration of the device in which the main controller MCT is connected to terminal equipment TE such as a keyboard and cathode ray tube display device, and data input and reception by the operator is performed by transmitting and receiving data with these devices. The main controller MCT is connected to the common transmission line La.
are connected to the sub-controllers SCT ₁ - SCT _n and the sub-controller SCT ₀ for monitoring, and transmit predetermined data thereto, as well as to each sub-controller SCT _{1 - SCT 0} .
It is designed to receive data from SCT _n and SCT ₀ .

Further, the sub-controllers SCT ₁ to SCT _n each connect to each of the plurality of terminal controllers through respective transmission paths Lb ₁ to Lb _n .
TCT ₁₁ ~ TCT _1o , TCT ₂₁ ~ TCT _2o , TCTm ₁ ~
It is connected to TCT _no , and relays data transmission and reception between these and the main controller MCT as necessary.Each terminal controller TCT ₁₁ to TCT _no has a temperature sensor as a local sensor. T, humidity sensor H, fan motor FM status contacts, etc. are connected, as well as motor control valve MV and electromagnetic switch for controlling various air conditioners.
MS etc. are connected and each terminal controller TCT ₁₁ ~ _{TCT no}
makes control decisions based on data transmission and reception with the sub-controllers SCT ₁ to SCT _n , the detected forces of each sensor T and H, and the status of the fan motor FM's status contact, and controls the motor valve MV and electromagnetic switch. By sending control output to MS etc., each type of air conditioner can be locally controlled.

The monitoring sub-controller SCT ₀ includes a fire monitoring device FSU, a power control device EPC, and a generator control device.
Monitoring information other than air conditioners is provided by GNC, etc., and this information is transmitted as data as necessary.

Figure 2 is a block diagram of the main controller MCT, centered on a processor such as a microprocessor CPUm, a fixed memory ROMm, and a variable memory.
RAMm, transmission circuit TRXm, and interface IFm are arranged, and these are connected by bus BUSm. Processor CPUm executes instructions stored in fixed memory ROMm in advance, and sub-controller SCT ₁ ~ SCT _n ,
Data sent and received with SCT ₀ and data sent and received with terminal equipment TE via interface IFm,
The variable memory RAMm is accessed as necessary.

FIG. 3 is a block diagram of the sub-controllers SCT ₁ to SCT _n and SCT ₀ , which, like the main controller MCT, center around the processor CPUs, fixed memory ROMs, variable memory RAMs, and transmission circuits TRXs ₁ and TRXs. ₂ are arranged around the periphery, and these are connected by bus BUSs, and based on the instructions stored in the fixed memory ROMs, the main controller MCT and each terminal controller TCT ₁₁ through transmission circuits TRX ₁ and TRX ₂ are connected. Data transmission and reception with TCT _no is relayed while accessing the variable memory RAMs for necessary data, or monitoring information is transmitted while accessing the variable memory RAMs.

FIG. 4 is a block diagram of the terminal controllers _TCT11 to _TCTno , which, like the main controller MCT, are centered around the processor CPUt, fixed memory ROMt,
The variable memory RAMt, transmission circuit TRXt, and interfaces IFt and IFt ₂ are arranged around the periphery, and these are connected by a bus BUSt.
Read-only memory (Programmable Read
A write memory PROM using a write memory PROM (Only Memory.) is provided, and is connected to the bus line BUSt via a writer (write circuit) WRT for writing data to it. Data once written is retained forever until it is erased by ultraviolet irradiation or electrical means.

In addition, the variable memory RAMt has a large capacity capacitor C _PS connected to the +V side of the power supply, so even if a main power outage occurs, the variable memory RAMt will last approximately 48 hours.
The stored data is not deleted.
However, the same effect can be obtained even if a battery is used instead of the capacitor C _PS .

Note that the processor CPUt is a fixed memory ROMt.
Executes instructions stored in the controller, transmits and receives data to and from sub-controllers SCT ₁ to _{SCT n} via the transmission circuit TRXt, and inputs digital data from each sensor and status contact via the interface IFt ₁ .
DI, analog data input AI reception, and digital data output DO for each control part,
The analog data output AO is sent and the necessary data is accessed to the variable memory RAMt, but important data is fixedly stored in the write memory PROM via the writer WRT, and the detection of each sensor The processor CPUt makes control decisions based on the data DI and AI that indicate the status of power and status contacts, as well as the sent and received data, and then sends out the data outputs DO and AO as control outputs. .

In addition, a small and portable setting device PST with a keyboard and a character display is connected to the connector CN via the interface IFt ₂ as necessary. , the contents of the variable memory RAMt and the write memory PROM can be displayed, and data can be updated or new stored therein freely.

FIG. 5 is an external view of the setting device PST, showing the front side of the casing F, which is small and suitable for hand-holding.
From the display DP that displays alphabets and numbers over 9 digits, the power switch SW, the terminal controllers TCT ₁₁ to TCT no that respond to operation, the indicator lights PL ₁ and PL ₂ that display the operating status of TCT _no , and 20 switches. In addition to the keyboard KB, etc., a flat cable CB is led out from the upper part of the back, and is detachably connected to the terminal controllers TCT ₁₁ to TCT _no by the connector CN connected to the tip of the flat cable CB. It has become a common thing.

FIG. 6 is a block diagram of the setting device PST. Power +V supplied from the terminal controller TCT via the connector CN is applied to the converter CV by turning on the power switch SW, and is also applied to each part in the setting device PST. The DC voltage boosted by converter C is used as a power source for display device DP.

In addition, the selection signal Ss from the terminal controller TCT via the interface IFT ₂ is sent to the decoder DEC ₁ ,
is given to DEC ₂ , decoded by it, and the bus of driver DR ₂ and keyboard KB.
Given to X ₁ to X ₃ .

For this reason, each digit of the display DP is sequentially and repeatedly specified by the driver DR ₂ , and depending on the output of the decoder DEC ₂ , the bus lines X ₁ to _{X 3} of the keyboard KB are sequentially and repeatedly specified. The bus line Y ₁ ~ Yn will be specified according to the keyboard KB operation.
The data signal Sd is sent out from the variable memory via the connector CN and the interface IFT ₂ .
It is applied to RAMt or write memory PROM and stored as data.

On the other hand, the display signal Sp from the terminal controller TCT via the interface IFT ₂ is converted into a signal corresponding to the character to be displayed in the character generator CG, and then sent to the display device via the driver DR _1.
is given to DP, and by the digit specification by driver DR ₂ and the display specification by driver DR ₁ ,
Predetermined characters are displayed by the display device DP.

However, the display on the display device DP is displayed using the keyboard.
This is done according to the operation of the processor CPUt according to the operation of the KB, and the keyboard
Each memory ROMt specified by the operation of KB,
The contents of RAMt and PROM are displayed.

In addition, the decoder DEC ₁ turns on the indicator light PL ₁ ,
PL ₂ is selected and the display signal Sp is given to them, for example, the indicator light PL ₁
This will indicate that the terminal controller TCT is offline, and the indicator light PL ₂ will indicate that the terminal controller TCT is offline.
A state in which the contents of the memories RCMt and RAMt are displayed, or a state in which data is set or updated for the memory RAMt is displayed.

FIG. 7 is a comprehensive flowchart showing the control operation by the processor CPUt of the terminal controllers TCT ₁₁ to _{TCT no} . After "START" by turning on the power or recovering from a power outage, "Initialize" to set the initial state is performed. After getting used to the test data, access the test data to the variable memory RAMt, judge whether the access is normal or not, judge whether the set value data is stored in the variable memory RAMt, and check whether or not the data is stored in the variable memory RAMt. At the time of recovery, a "self-diagnosis" is performed by determining whether the total number of bits of data stored in the variable memory RAMt is the same as before the power outage, etc., and if "Is there an error?" is YES, writing is performed. Transferring the contents of memory PROM to variable memory
After performing "abnormality countermeasure processing" such as newly storing data in RAMt, "data transmission/reception" notifies the main controller MCT of the occurrence of an abnormality via the sub-controllers SCT ₁ to _{SCT n} . Receives the required data from the controller MCT and stores it in the variable memory.
Store in RAMt.

If “Is there an abnormality?”
"Time schedule control" that allows the power to be turned on to the air conditioner only during a predetermined time period after storage, the demand level determined according to the importance of the air conditioner to be controlled, and the power supply situation. "Level control" that compares the command level given according to the demand level and stops the operation of the air conditioner when the demand level becomes lower than the command level, "Upper/lower limit monitoring" that compares the actual value and sends out an alarm when the measured value is above the upper limit or below the lower limit, "adjustment control" that determines the control status by predetermined calculations based on each input data, In response to the information, in order to prevent the spread of fire and smoke and the promotion of fire and combustion, "fire control" is carried out by blocking ventilation dampers, stopping air conditioner operation, etc., and in accordance with these results, digital data is output. After performing "DO sending" and analog data output "AO sending", the process moves to the setting device PST, and data is sent to the setting device PST according to the input state of the keyboard KB.
After performing "PST processing" such as storing data from the PST, "data transmission/reception" is performed, transmitting each necessary current data, and storing the received data in the variable memory RAMt. Repeat the action.

Figure 8 is a flowchart showing details of "PST processing" in Figure 7, and is a keyboard KB
Check "Is there a key input?" and this is
If YES, a display signal Sp is sent out according to the operation of the keyboard KB, and a "key input display" is performed.
After checking the "Number of key inputs?" corresponding to the number of operations on the keyboard KB, if this becomes the predetermined number of times and the result is YES, the "Execution key input?" is set to YES by operating the execution key specified on the keyboard KB. On the assumption that Executes memory “PROM writing”, “special command execution”, etc., and ends “PST processing”.

Therefore, by connecting the setting device PST to the terminal controllers TCT ₁₁ to _{TCT no} as necessary, data can be set and updated freely, and the contents of the memories ROMt, RAMt, and PROM can be easily checked. Therefore, the control status is changed without going through the main controller MCT.
MCT, sub-controller SCT ₁ ~ SCT _n , transmission line La, Lb ₁
Even if a failure occurs in any one of ~Lb _n , local control can be performed satisfactorily, and these control situations can be arbitrarily determined.

In addition, the order of each flowchart may be changed as appropriate depending on the conditions, or unnecessary steps may be omitted. The equipment to be controlled includes various types of cooling and heating equipment, as well as intake outside air and exhaust air. The present invention can be freely modified in various ways, such as allowing the total heat exchanger, boiler, refrigerator, etc. used for heat exchange to be arbitrarily selected, and the structure and configuration of the setting device PST to be selected depending on the situation. be.

As is clear from the above description, according to the present invention, data can be freely set and updated for a terminal controller having distributed control functions, and the memory contents in the terminal controller can be easily checked. Therefore, even if a failure occurs in another part, the control status of the terminal controller can be changed independently and locally, and a remarkable effect can be obtained in air conditioners for various uses.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, and Fig. 1 is a block diagram showing the entire configuration of an air conditioner to which the present invention is applied.
Figure 2 is a block diagram of the main controller, Figure 3 is a block diagram of the sub controller, Figure 4 is a block diagram of the terminal controller, Figure 5 is an outline diagram of the portable setting device, and Figure 6 is the portable setting device. 7 is a comprehensive flowchart showing the control status by the processor of the terminal controller, and FIG. 8 is a block diagram of the terminal controller.
This is a flowchart showing the details of "PST processing". MCT...Main controller, TE...Terminal equipment, TCT ₁₁
~TCT _no , TCT... terminal controller, ROMt... fixed memory, RAMt... variable memory, PROM... writing memory, PST... setting device, KB... keyboard, DP... display.

Claims (1)

[Claims] 1 Air conditioning control consisting of a main controller that sends and receives data to and from the connected terminal equipment, and a terminal controller that sends and receives data to and from the main controller and also performs local control for each type of air conditioning equipment. The device is characterized by comprising a keyboard that is detachably connected to the terminal controller and that sets and updates data in the memory in the terminal controller, and a display that displays the contents of the memory. Portable setting device.