KR200387870Y1 - apparatus for controlling temperture - Google Patents

Abstract

An industrial temperature control device is disclosed. An input unit which receives a current temperature signal output from the temperature sensor and converts the signal into a digital signal; On / off control for storing and outputting input set temperature information, receiving and outputting current temperature information output from the input unit, and controlling the temperature of the control target to a temperature value within a preset range based on the current temperature information inputted. A controller which outputs a signal and outputs a preset on / off auxiliary control signal and an alarm signal when current temperature information is not input from the input unit; A key input unit configured to receive a set temperature information for controlling the temperature of the control target in a predetermined range and on / off set time information of the auxiliary control signal to a controller; A display unit for receiving and displaying temperature setting information and current temperature information output from the controller and receiving the alarm setting signal when the alarm signal is output from the controller to generate visual and auditory alarm signals; And an output unit configured to receive an on / off control signal and an on / off auxiliary control signal output from the controller to control on / off power of the heating / cooler.

The present invention as described above has an effect of controlling the temperature of the control target in a desired range even when normal temperature information is not input from the temperature sensor.

Description

Temperature Control Unit {apparatus for controlling temperture}

The present invention relates to an industrial temperature control device generally used for process control devices and automation systems.

In general, industrial temperature controllers are in high demand as basic components of process controllers, but expensive dedicated temperature controllers with different specifications should be used depending on the temperature control range. That is, by using a dedicated temperature control device having different specifications for each temperature control element of one process control system, a lot of cost is added to the basic infrastructure construction, which acts as a factor of cost increase.

In order to solve this problem, there is a need for a multipurpose general purpose temperature control device capable of using various types of temperature sensors corresponding to various temperature control ranges. Such a general-purpose temperature control device has an advantage of using different temperature sensors having corresponding specifications according to the control temperature range of the control target. However, such a general-purpose temperature controller must be able to control the temperature information of various specifications with the same controller, the reliability of the control logic is a very important factor, but the conventional general-purpose temperature controller is overheating, breakage and short circuit of the temperature sensor Therefore, when temperature information is not input from the temperature sensor, there is a problem that the output of the temperature control signal is maintained on or off, causing an overheating or subcooling state of the temperature control target.

The present invention is to solve the above problems, in the general-purpose temperature control device to which various types of temperature sensors can be applied, even if normal temperature information is not input from the temperature sensor to output a predetermined temperature control signal to control It is an object of the present invention to provide a general-purpose temperature control device capable of controlling the temperature in a desired range.

The temperature control device according to the present invention is a temperature control device for an industrial heating / cooler that can use a different type of temperature sensor according to a control temperature range of a control target, and receives a current temperature signal output from the temperature sensor An input unit converting and outputting a signal; Store and output input set temperature information, receive and output the current temperature information output from the input unit, and control the temperature of the control object to a temperature value within a preset range based on the input current temperature information. A controller which outputs an on / off control signal and outputs a preset on / off auxiliary control signal and an alarm signal when current temperature information is not input from the input unit; A key input unit configured to receive a set temperature information for controlling the temperature of the control target to a predetermined range and on / off set time information of the auxiliary control signal to the controller; A display unit which receives the temperature setting information and the current temperature information output from the controller and displays the received temperature setting information and generates a visual and audible alarm signal when an alarm signal is output from the controller; And an output unit configured to receive an on / off control signal and an on / off auxiliary control signal output from the controller to control on / off power of the heating / cooler.

Preferably, the on / off setting time information of the auxiliary control signal is received from the key input unit and stored as a first auxiliary control signal, and the on / off time information of the on / off control signal repeatedly output from the controller at a predetermined period. A second auxiliary control signal for updating and storing every cycle, and further comprising a storage unit for receiving setting information for selecting the first and second auxiliary control signals from the key input unit and storing the auxiliary information as auxiliary control mode information. If the current temperature information is not input from the input unit, the control unit reads the auxiliary control mode information from the storage unit and selectively reads out the first or second auxiliary control signal corresponding to the auxiliary control mode information from the storage unit and repeats the output. .

Preferably, when the controller outputs the first and second auxiliary control signals, the controller outputs the first and second alarm signals corresponding to the display unit, and the display unit outputs the first and second alarm signals. On the basis of the first and second alarm signals, a distinctive visual and audio alarm signal is generated.

Hereinafter, the operation of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a temperature control device according to the present invention, Figure 2 is a view showing the specifications of the temperature sensor usable in the present invention.

The temperature sensor 100 of the present invention shown in FIG. 1 may use various specifications of thermocouple temperature sensors and platinum temperature sensors as shown in FIG. 2. The temperature sensor 100 converts the current temperature from the control object into an electrical signal in real time and outputs it to the input unit 110.

The input unit 110 is connected to the temperature sensor 100, and the input unit 110 receives an analog signal of the current temperature output from the temperature sensor 100, converts it into a digital signal, and outputs the digital signal to the controller 120.

The control unit 120 is connected to the input unit 110 to receive the current temperature information of the control target from the input unit 110 as a digital signal.

The control unit 120 is connected to the key input unit 130 and receives the set temperature information for controlling the temperature of the control target to a predetermined range by the user to apply to the control unit 120. The key input unit 130 receives the on / off setting time information of the auxiliary control signal to be output in the emergency from the control unit 120 and applies it to the control unit 120. In addition, the key input unit 130, when the control unit 120 is in the setting mode, the control sensitivity value (histerisys), the control sensitivity range value, the temperature compensation value, the delay time value, the upper limit alarm value, the lower limit alarm value of the set temperature to be controlled. The heating control / cooling control information is input by the user and applied to the control unit 120.

The controller 120 stores various setting information input from the key input unit 130 in the setting mode in the storage unit 140 and outputs it to the display unit 150 for display. The controller 120 outputs and displays the current temperature information input from the input unit 110 to the display unit 150 in the operation mode, and controls the current temperature of the control target to a temperature value within a preset range based on the current temperature information. Outputs an on / off control signal for outputting to the output unit 160, and when the current temperature information is not input from the input unit 110, the preset on / off auxiliary control signal stored in the storage unit 140 is stored in the storage unit ( It reads from 140 and outputs it to the display unit 150 together with the alarm signal.

The display unit 150 receives and displays the temperature setting information and the current temperature information output from the controller 120, and generates an alarm signal of visual and audio when the alarm signal is output from the controller 120.

The output unit 160 receives the on / off control signal and the on / off auxiliary control signal input from the control unit 120 to control the on / off power of the heating / cooler (not shown) connected to the relay (not shown). The temperature of the temperature control object is controlled within a predetermined range.

The actual inspection of the circuit board corresponding to the above-described configuration of the present invention is shown in FIG. 3. As illustrated, the key input unit 130 and the display unit 150 are configured on one substrate, and the output unit 160 is configured on one substrate, and the input unit 110, the control unit 120, and the storage unit ( 140 is configured on one substrate. The real picture in which each configuration of FIG. 3 is incorporated into a standard case is shown in FIG. 4.

In addition, each input / output terminal connection diagram of the present invention is shown in FIG. 5. The connection diagram of the temperature sensor 100 when using the platinum sensor as the temperature sensor 100 of the present invention is as shown in FIG. Then, the connection diagram of the temperature sensor 100 in the case of using a thermocouple sensor as the temperature sensor 100 of the present invention is as shown in FIG.

Hereinafter, the operation of the setting mode and the auxiliary control signal according to the present invention will be described in more detail with reference to FIGS. 8 and 9.

FIG. 8 is a diagram illustrating a function, a range, and a display name of a setting variable input to the present invention, and FIG. 9 is a diagram illustrating names of respective parts of FIG. The user first inputs various setting values through the key input unit 130 before operating the temperature control device of the present invention. First, when the mode selection key 950 of the key input unit 130 is input, the setting mode and the operation mode of the controller 120 are toggled. When the control unit 120 enters the setting mode and the function selection key 940 is input, the display names corresponding to the various functions shown in FIG. 8 are sequentially displayed on the current temperature display unit (display name) 990 and the set value is increased. The set value displayed on the correction temperature display section (set value) 980 is increased or decreased by the input of the key 960 and the set value decreasing key 970.

When inputting the ON setting time information of the first auxiliary control signal AUTO by the key input of the function selection key 940, 'A.on' is displayed on the present temperature display part (display name) 990 and the setting temperature is displayed. The setting time displayed on the display section (set value) 980 is increased or decreased. When the function selection key 940 is input once more, 'A.off' is displayed on the current temperature display part (display name) 990 and the setting time displayed on the set temperature display part (setting value) 980 is increased or decreased. If the setting up / down keys 960 and 970 are simultaneously input, the first auxiliary control signal AUTO is set as the basic auxiliary control signal, and if the function selection key 940 is input once more, the on / off setting time information is displayed. The first auxiliary control signal Auto is stored in the storage 140. When inputting setting time information of the first auxiliary control signal MAN, the setting displayed on the setting temperature display part (setting value) 980 while the current temperature display part (display name) 990 is displayed as 'M.on'. If the setting increase / decrease keys (960, 970) are simultaneously input after setting the time, the first auxiliary control signal (MAN) is set as the basic auxiliary control signal, and if the function selection key (940) is input, the ON setting time information is displayed. The first auxiliary control signal MAN is stored in the storage 140. If the function selection key 940 is input once more, 'FUZZ' is displayed on the present temperature display part (display name) 990. At this time, when the setting increase / decrease keys 960 and 970 are simultaneously input, the second auxiliary control signal (FUZZY) is input. ) Is set as the basic auxiliary control signal.

On the other hand, if the normal temperature information is not input from the input unit 110, the control unit 120 among the first auxiliary control signal AUTO, the first auxiliary control signal MAN and the second auxiliary control signal FUZZY The auxiliary control signal set as the control signal is output to the output unit 160. When the controller 120 is in the operation mode, the controller 120 updates the on / off time information of the on / off control signal repeatedly output from the controller 120 at a predetermined cycle as the second auxiliary control signal FUZZY every cycle. Save to 140. Therefore, if the control unit 120 operates normally in the operation mode while the second auxiliary control signal FUZZY is set as the basic auxiliary control signal, and the temperature information is not input due to overheating of the temperature sensor 100, the control unit 120 When the temperature sensor 100 is in normal operation by reading the most recently updated on / off control signal output from the control unit 120 from the storage unit 140 and outputting it to the output unit 160 as an auxiliary control signal. The temperature of the control object can be controlled under the same conditions.

In addition, when the controller 120 outputs the first auxiliary control signal AUTO, the first auxiliary control signal MAN, and the second auxiliary control signal FUZZY, the controller 120 outputs a different alarm signal corresponding thereto. Is output to the display unit 150, and the display unit 150 generates a visual and audible alarm signal distinguished from each other based on the alarm signal output from the control unit 120. It is possible to recognize the nothing, and also to determine the shape of the auxiliary control signal output from the temperature control device.

In the general-purpose temperature control device that can apply various types of temperature sensors, even if normal temperature information is not input from the temperature sensor, it is possible to output the preset temperature control signal to control the temperature of the control target to the desired range. There is.

1 is a block diagram of a temperature control device according to the present invention,

2 is a view showing the specifications of the temperature sensor usable in the present invention,

FIG. 3 is a diagram illustrating the actual inspection of a circuit board corresponding to the block configuration of FIG. 1;

Figure 4 is a view showing the front case due diligence of the present invention,

5 is an input / output terminal connection diagram of the input / output unit of FIG. 1;

6 is an input terminal connection diagram when using a platinum sensor in the present invention,

7 is an input terminal connection diagram when using a thermocouple sensor in the present invention,

8 is a view showing a function, a range, and a display name of a setting variable input to the present invention, and

9 is a view showing the names of the parts of FIG.

<Explanation of symbols for the main parts of the drawings>

100: temperature sensor 110: input unit

120: control unit 130: key input unit

140: storage unit 150: display unit

160: output unit 900: main control signal display lamp

910: auxiliary control signal display lamp 920: high limit alarm display lamp

930: Low limit alarm display lamp 940: Function selection key

950: Mode selection key 960: Setting value increasing key

970: set value decrease key 980: set temperature display part (set value in set mode)

990: Current temperature display part (display name in setting mode)

Claims (3)

In the temperature control device of the industrial heating / cooler which can use different types of temperature sensors according to the control temperature range of the control object, An input unit which receives a current temperature signal output from the temperature sensor and converts the signal into a digital signal; Store and output input set temperature information, receive and output the current temperature information output from the input unit, and control the temperature of the control object to a temperature value within a preset range based on the input current temperature information. A controller which outputs an on / off control signal and outputs a preset on / off auxiliary control signal and an alarm signal when current temperature information is not input from the input unit; A key input unit configured to receive a set temperature information for controlling the temperature of the control target to a predetermined range and on / off set time information of the auxiliary control signal to the controller; A display unit which receives the temperature setting information and the current temperature information output from the controller and displays the received temperature setting information and generates a visual and audible alarm signal when an alarm signal is output from the controller; And And an output unit configured to receive an on / off control signal and an on / off auxiliary control signal output from the controller to control on / off power of the heating / cooler. The method of claim 1, The on / off setting time information of the auxiliary control signal is received from the key input unit and stored as a first auxiliary control signal, and the on / off time information of the on / off control signal repeatedly output from the control unit at a predetermined period is second. And a storage unit which updates and stores every period as an auxiliary control signal, and receives setting information for selecting the first and second auxiliary control signals from the key input unit and stores the setting information as auxiliary control mode information. If the current temperature information is not input from the input unit, the control unit reads the auxiliary control mode information from the storage unit and selectively reads the first or second auxiliary control signal corresponding to the auxiliary control mode information from the storage unit and repeatedly outputs the information. Temperature control device, characterized in that. The method of claim 2, When the control unit outputs the first and second auxiliary control signals, the control unit outputs the first and second alarm signals corresponding to the display unit, And the display unit generates visual and audible alarm signals which are distinguished from each other based on the first and second alarm signals output from the controller.