JPS5918332A - Controlling device of plural apparatus - Google Patents

Abstract

PURPOSE:To enable to form the controlling device with standard integrated circuits by a method wherein controlling is performed by means of the exclusive OR output of the outputs of two temperature detection elements, when one or the two apparatuses is in operation. CONSTITUTION:When the temperature of the sensor 1 changes, if both the outputs of temperature detection circuits 30 and 31 are simultaneously 0 or 1, the outputs of the temperature detection circuits appear through AND circuits 36 and 37 to output terminals 41 and 42. On the contrary, if the outputs of the temperature detection circuits 30 and 31 and 0 and 1 or 1 and 0 respectively, the output of a flip-flop 33 appears through AND circuits 34 and 35 to the output terminals 41 and 42. At this time, the flip-flop 33 inverts. In such a manner as mentioned above, with regard to the output terminals 41 and 42, the number of starts and stops is uniformized.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-device control device that installs a plurality of devices such as refrigerators and air conditioners and controls the number of devices according to the load.

Because it is difficult to adjust the capacity of equipment such as refrigerators and air conditioners, multiple equipment is installed in parallel and the number of units in operation is controlled according to the load. is a multiple device control device.

FIG. 1 is a circuit diagram showing an example of a commonly used multi-device control device, in which 1 is a sensor, 2 to 5 are temperature detection circuits, and 6 is an integrated circuit for input interface. , 7 is a microcomputer, 8 to 11 are output circuits, 12 is an output interface integrated circuit, 13
14 is a memory, 15 is a memory control circuit, and 16 to 19 are output terminals. The circuit configured as described above is configured to perform various control operations in a microcomputer process.

However, in the control circuit with the above configuration, 1
Because the functions of each microcomputer are extremely large, they perform complex control.

However, in cases where two devices are to be handled, it is much cheaper to construct the circuit with a discrete circuit, and the advantage of using a microcomputer is lost.

Therefore, an object of the present invention is to construct an inexpensive multi-device control device using standard integrated circuits.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A multi-device control device according to the present invention will be described in detail below with reference to the drawings.

FIG. 2 is a circuit diagram showing an embodiment of the multiple device control device according to the present invention. In the same figure, 1 is the sensor, 30.31
3 is a temperature detection circuit, 32 is an exclusive OR, 33 is a flip-flop, 34 to 37 are AND, 38 is an inverter, 3
9.40 is a logical sum, and 41.42 is an output terminal.

In a circuit configured in this way, when the temperature around the sensor 1 changes, the temperature detection circuit 30
．． If the outputs of 31 are both "0" or "]" at the same time, the exclusive OR 32 results in a logical product of 36.37
The output of the temperature detection circuit appears at output terminals 41 and 42 through. Next, the output of the temperature detection circuit 30.31 is "0"
and “1” or “1” and “0”, logical product 34
．． 35, the output of flip 70 knob 33 appears at output terminal 41.42. In this case, flip 70 knob 3
311′i, the output of the temperature detection circuit 30.31 is “0” because the trigger is applied by the output of the exclusive OR 32.
” and “1” or “ ]” and “0”, a trigger pulse is generated to invert the output of the flip-flop 33. Such operations are summarized as shown in FIG. 3, and when viewed from the output terminals 41 and 42, the number of starts and stops is equalized.

As explained above, according to the present invention, when the number of units is small, it can be configured with a simpler circuit compared to one using a microcomputer for the control section, and accordingly, it is small and lightweight. , it has the excellent effect of providing an inexpensive controller.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing a conventional control device, FIG. 2 is a circuit diagram showing an embodiment of a multiple device control device according to the present invention, and FIG.
- is a diagram for explaining the operation of FIG. 2; 1...Sensor, 30.31...Temperature detection circuit, 32
...Exclusive OR, 33...Flip frog, 3
4 to 37... logical product, 38... inverter, 39.
40...Order, 41.42...Output terminal. Note that the same parts in the figures are indicated using the same symbols. Agent Shin Kuzuno - (1 other person)
Meeting 1 Figure 175

Claims (1)

[Claims] In a multi-device control device that controls two refrigerators or air conditioners in parallel, when both devices are in operation or stopped, the outputs of the two temperature detection elements are sent as controller outputs, and either 2 if only one device is in operation
1. A multi-device control device, characterized in that the output of a flip-flop triggered by the exclusive OR output of the outputs of two temperature sensing elements is sent out as a controller output.