JPH1139043A - Multi channel temperature controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi channel temperature controller that requires a small space for installation. SOLUTION: This temperature controller consists of plural terminal part units 121 and 122 and an equipment body 111. Here, the terminal part units 121 and 122 have terminals 71 and 72, amplification parts 61 and 62, radio wave transmission and reception parts 101 and 102 and output parts 41 and 42. The equipment body 111 has a radio wave transmission and reception part 103, an A/D conversion part 81 and an arithmetic processing part 31, and performs transmission and reception of signals and controls by the radio wave between the radio wave transmission and reception parts 101 and 102 in the terminal part units 121 and 122 and the radio wave transmission and reception part 103 in the equipment body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a control object to a predetermined temperature by using a temperature sensor such as a resistance temperature detector or a thermocouple as an input and controlling a heating medium by an output signal such as a voltage pulse or a current. Temperature controller.

[0002]

2. Description of the Related Art FIG. 2 is a block diagram showing an embodiment of a conventional temperature controller. In FIG. 2, 1 is a temperature sensor, 2 is a control target, 5 is a heating medium, 110 is a controller main body, 7 is a terminal unit, 6 is an amplification unit, 8 is an A / D conversion unit, 3 is an adjustment operation, and the like. Is an arithmetic processing unit, 4 is an output unit, and 9 is a power supply unit. It should be noted that a setting operation section for setting constants and the like and a display section are omitted. In FIG. 2, the input signal from the temperature sensor 1 is
After being amplified by the amplifier 6 and converted into a digital signal by the A / D converter 8, processing such as PID control calculation is performed by the arithmetic processing unit 3, and the signal is converted into a signal such as a voltage pulse or current by the output unit 4. The output is performed to control the heat medium 5 to control the control target 2 at a predetermined temperature. Thus, the conventional temperature controller is for one loop (one input and one output).

[0003]

In the case of temperature control, a large number of controllers are often required as compared with control of flow rate, pressure and the like. In the conventional equipment, one controller is required for one loop. To handle many inputs and outputs on a control panel, the same number of controllers as the number of loops must be installed. In some cases, the number of loops was limited.

[0004] It is an object of the present invention to provide a multi-channel temperature controller with a small mounting space.

[0005]

In order to solve the above-mentioned problems, the present invention comprises a plurality of terminal units and a device main body, wherein the terminal units are connected to an input device such as a temperature sensor. A terminal unit for connecting an input signal of the same and an output signal to an output side device such as an operation device, an amplifying unit for amplifying the input signal, a radio wave transmitting / receiving unit connected to an output of the amplifying unit, And an output unit connected to the unit for generating the output signal. The device body includes a radio wave transmitting / receiving unit, an A / D converter connected to the radio wave transmitting / receiving unit, and an output of the A / D converter. And a processing unit connected to the radio transmission / reception unit, for transmitting and receiving signals by radio waves between the radio transmission / reception unit in the terminal unit and the radio transmission / reception unit in the device body. That is, one device main body is configured to communicate with a plurality of terminal units sequentially via the radio wave transmitting and receiving unit to perform control.

[0006]

FIG. 1 is a block diagram showing an embodiment of the present invention. In FIG. 1, 11 and 12 are temperature sensors,
21 and 22 are objects to be controlled, 51 and 52 are heating media, 111 is a device main body, 121 and 122 are terminal units, 71 and 72.
Is a terminal section, 61 and 62 are amplification sections, 101, 102, and 10
3 is a radio wave transmitting / receiving unit, 41 and 42 are output units, 91, 92,
93 is a power supply unit, 81 is an A / D conversion unit, and 31 is an arithmetic processing unit. It should be noted that a setting operation section for setting constants and the like and a display section are included in the device main body 111 but are omitted. In FIG.
Amplifying section 6 having a different configuration according to the configuration of terminal sections 71 and 72 and temperature sensors 11 and 12 and heating mediums 51 and 52.
1 and 62 and the output units 41 and 42 are connected to the terminal unit 1
The number corresponding to the number of loops is set as 21, 122,
One A / D conversion unit 81 and one arithmetic processing unit 31 are installed as a common device main body.

[0007] The arithmetic processing unit 31 firstly includes the terminal unit 1
The control unit 21 communicates with the control unit 21 via the radio transmission / reception unit 101, receives an input signal from the temperature sensor 11, performs control arithmetic processing, and transmits an output signal. The terminal unit 121 receives this signal and controls the heat medium 51 via the output unit 41. Next, the arithmetic processing unit 31 communicates with the terminal unit 122 via the radio wave transmitting / receiving unit 102, receives an input signal from the temperature sensor 12, performs control arithmetic processing, and transmits an output signal. The terminal unit 122 receives this signal and outputs it.
The heating medium 52 is controlled via the control unit 2. Thereafter, all the terminal units installed in the same manner are sequentially communicated and controlled.

[0008]

As described above, the components having different configurations according to the loops are installed as many as the number of loops as the terminal unit, and one common component is installed as the device main body. The mounting space on the panel can be reduced, and the device can be downsized.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a configuration diagram showing a conventional embodiment.

[Explanation of symbols]

1, 11, 12: temperature sensor, 2, 21, 22, controlled object, 3, 31: arithmetic processing unit, 4, 41, 42: output unit,
5, 51, 52 ... heat medium, 6, 61, 62 ... amplification section, 7,
71, 72 ... terminal section, 8, 81 ... A / D conversion section, 9, 9
1, 92, 93: power supply unit, 101, 102, 103: radio wave transmission / reception unit, 110, 111: device body, 121, 12
2. Terminal unit.

Claims (1)

[Claims] 1. A terminal unit comprising a plurality of terminal units and an apparatus main body, wherein the terminal unit connects input signals from an input device such as a temperature sensor and output signals to an output device such as an operation device. A terminal unit for performing, an amplification unit for amplifying the input signal, a radio transmission / reception unit connected to an output of the amplification unit, and an output unit connected to the radio transmission / reception unit to generate the output signal, The device body includes a radio wave transmitting / receiving unit, an A / D converter connected to the radio wave transmitting / receiving unit, and an arithmetic processing unit connected to the output of the A / D converter and the radio wave transmitting / receiving unit, A multi-channel temperature controller for transmitting and receiving signals by radio waves between a radio wave transmitting / receiving unit in a terminal unit and a radio wave transmitting / receiving unit in the device body.