JPH02146603A - Terminal equipment controller - Google Patents

Abstract

PURPOSE:To realize the stable control having the reduced overshoot or the control suited to the due purpose by selecting a working or stop mode of a terminal equipment in their combination based on the difference between the detected value and the set value. CONSTITUTION:A detection means 1 converts the physical quantity into the multi-stage or non-stage electric signal and outputs them. A setting means 2 sets the threshold value at multiple stages or non-stage to the physical value and also outputs the value as the electric signal. An arithmetic means 7 inputs these two electric signals and obtains and outputs the difference between both signals. Then a process means 4 decides the combination of operations of a terminal equipment 6 which are previously decided via the operation or a table in response to the obtained difference value. A control signal production means 5 transmits the decided control signal to each equipment 6 to operate or stop these equipments 6. Then the means 4 decides a proper type or combination of equipments 6 in accordance with the difference value obtained by the means 7. As a result, the equipment 6 is operated in response to the load, etc. Thus the stable control is attained with the reduced overshoot for the terminal equipments.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a terminal device control device that controls the operation of a plurality of terminal devices, and particularly to a device that performs control based on the amount detected by a sensor or the like.

BACKGROUND ART Conventionally, as shown in FIG. 2, this type of terminal equipment control device has a detection means 1 for detecting a physical quantity and a setting means 2 for setting a threshold value. The comparison means 3 compares the outputs of the setting means 2, and the processing means 4 determines whether to operate or stop the terminal device 6 based on the magnitude relationship, and the control signal generation means 5 sends a control signal to the terminal device 6 according to the determination. It was sent out and controlled.

Problems to be Solved by the Invention However, in the conventional terminal device control device of this type,
When controlling a plurality of terminal devices, a method has been adopted in which all the terminal devices are uniformly operated or stopped depending on the magnitude relationship between a predetermined setting value and a detected value. For this reason, as shown by the broken line in FIG. 3, there is a large overshoot with respect to the set value, which not only makes it impossible to obtain stable control, but is also disadvantageous in terms of energy saving. Furthermore, in order to solve this problem, it is necessary to manually operate either the operating or stopped terminal equipment, which is cumbersome and poses a risk of erroneous operation.

The present invention attempts to solve such conventional problems, and aims to realize comfortable control with less overshoot without requiring much effort in setting or manual operation.

Means for Solving the Problems In order to solve the above problems, the terminal equipment control device of the present invention includes a detection means, a setting means, and a calculation means for calculating the difference between the output from the detection means and the output from the setting means. , a processing means for determining a combination of operation and stop of the terminal equipment according to the output from the calculation means, and a control signal generation means for outputting a control signal to each terminal equipment according to this determination. It is something.

Effects The present invention has the following effects due to the above-described configuration. The detection means converts the physical quantity into a multistage or stepless electrical signal and outputs it. The setting means sets the threshold value for the physical quantity in multiple stages or in a stepless manner, and outputs it as a similar electrical signal. The calculation means inputs these two signals, calculates the difference between them, and outputs the difference. The processing means determines a combination of operations of the terminal equipment, which is predetermined by calculation, a table, etc., according to the obtained difference value. The control signal generating means sends the determined control signal to each terminal device to operate or stop each terminal device. Therefore, by having the processing means determine the appropriate type and combination of terminal equipment according to the value of the difference obtained by the calculation means, it is possible to operate the terminal equipment according to the load, etc., suppress overshoot, and maintain stable operation. It has the effect of gaining control.

EXAMPLE Hereinafter, an example of the present invention in which temperature T is detected and two heating appliances are controlled will be described based on the drawings.

FIG. 1 is a block diagram of a terminal equipment control device according to the present invention, in which ``■'' is a detection means such as a temperature sensor, 2 is a setting means for setting a temperature threshold, and 7 is a calculation means. Outputs 1 and 2 are input. 4 is a processing means, which selects the terminal device 6, which is a heating appliance, to be operated based on the value of T, based on the difference between the detected temperature T obtained in 3 and the threshold temperature Ti+. 5 is a control signal generating means;
A control signal is sent to the selected terminal device 6 through a bus or a dedicated line. FIG. 3 is a time transition diagram showing an example of control when using the device of the present invention, and 0
The horizontal axis shows the temperature T and the difference ΔT when one terminal device 6 is operated when ≧ΔT>ΔT1 and two terminal devices 6 are operated when ΔT and ≧ΔT.

Now, when the temperature decreases and becomes lower than the threshold temperature TR (1+), only one terminal device 6 is operated because 0≧ΔT>ΔT. Here the temperature continues to drop further,
If ΔT, ≧ΔT (tz), both terminal devices are operated. Thereafter, when the overshoot disappears and the temperature rises again to ΔT>ΔT1, only one terminal device 6 is operated (t3). After this, the temperature gradually continues to be false, but when ΔT>0, that is, T>TR (t
4), the operation of the remaining terminal device 6 is stopped. When the temperature T becomes lower than the threshold value TR set in this way, the terminal equipment 6 is operated in the opposite direction or is changed depending on the difference T, so that stable control with small overshoot can be obtained. can.

In addition, in the above example, we described the case where multiple devices of the same type are controlled as terminal devices, but for example, it is possible to control a combination of contradictory terminal devices such as a heating device and a cooling device, or a combination of devices with different capabilities. It may also be done by

Effects of the Invention As described above, according to the terminal equipment control device according to the present invention, operation or stopping of the terminal equipment can be selected in combination according to the difference between the set value and the detected value, so stable control with little overshoot can be achieved. Or, you can perform control that suits your purpose.
This has the effect of eliminating disadvantages to energy saving and inconveniences such as manual operation.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a terminal device control device according to an embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of a conventional terminal device control device, and FIG. 3 is a characteristic diagram showing the present invention and a conventional example. be. 1...Detection means, 2...Setting means, 4
. . . processing means, 5 . . . control signal generation means, 6 . . . terminal equipment, 7 . . . calculation means. Name of agent: Patent attorney Shigetaka Awano

Claims (1)

[Claims] A detection means for converting a physical quantity into an electrical signal, a setting means for setting a threshold value, and an arithmetic means for calculating the difference between the set amount set by the setting means and the detected amount detected by the detection means. and processing means for determining a combination of operations of a plurality of terminal devices to be controlled according to the value of the difference determined by the calculation means; A terminal equipment control device comprising control signal generating means for sending out to a terminal equipment.