TW201227201A - Temperature control apparatus - Google Patents

Abstract

A temperature control apparatus includes a temperature control circuit, a switch control circuit and a heating control circuit. The temperature control circuit stores a plurality of predetermined temperatures. The temperature control circuit is configured to output control signals according to the corresponding predetermined temperatures. The switch control circuit includes an input terminal, an output terminal and a control terminal. The input terminal is configured to receive a DC voltage. The control terminal is configured to receive the control signals. The output terminal is configured to output the DC voltage according to the control signals. The heating control circuit is configured to receive the DC voltage and generate heat. The temperature control circuit is configured to sense a temperature in the apparatus, and control the switch control circuit to stop outputting the DC voltage when the temperature in the apparatus is equal to the corresponding predetermined temperatures.

Description

201227201 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a control device, and more particularly to a constant temperature control device. [Prior Art] [0002] Many electronic devices currently require rigorous testing at specific temperatures to verify the reliability and stability of electronic devices operating under extreme weather conditions. Conventional thermostatic testing is usually carried out in specialized constant temperature testing equipment such as incubators, whereas professional thermostats are more expensive and increase production costs. SUMMARY OF THE INVENTION [0003] In view of the above, it is necessary to provide a thermostat control device that is less expensive. [0004] A constant temperature control device includes a temperature control circuit, a switch control circuit and a heating control circuit. The temperature control circuit is provided with a plurality of preset temperature values, and the temperature control circuit sends a control signal according to a corresponding temperature preset value. The switch control circuit includes an input end, an output end, and a control end. The input end of the switch control circuit receives the DC voltage. The switch control circuit receives the control signal via the control end, and the switch control circuit receives the control signal according to the control signal. Outputting the DC voltage at the output end, the heating control circuit receives the DC voltage and generates heat, the temperature control circuit detects the heating temperature of the heating control circuit, and controls the heating temperature of the heating control circuit to reach a preset temperature value The switch control circuit stops outputting the DC voltage. [0005] Compared with the prior art, the above-mentioned thermostat control device controls the switch control circuit to output a DC voltage to the heating control circuit by a switch control circuit, which is a type of A0101, page 4 / page 0992080497-0 201227201 temperature control circuit When the heating temperature of the heating control circuit reaches the preset value of the temperature, the switch control circuit stops outputting the direct current, and the automatic control of the heating temperature is realized, and the structure is simple and the cost is low. [0006] Referring to FIG. 1, a preferred embodiment of the thermostatic control device of the present invention is used to generate a constant test temperature in a test box, including a temperature control circuit 100, a switch control circuit 200, and a heating The control circuit 3'' has an input circuit 400, an output circuit 500, and a power supply. The temperature control circuit 100 is provided with a plurality of preset temperature values, and the temperature control circuit 1 sends a control chain according to the corresponding temperature preset value. The switch control circuit 2 〇 〇 includes an input terminal ... the dJ terminal and the - control terminal. The input terminal of the open circuit 2 receives the all-current waste. The switch control circuit 2 receives the control point of the temperature control circuit 1GG via the control terminal, and the circuit (4) circuit 2 outputs the DC voltage at the wheel-out terminal according to the control signal. The heating control circuit _ connects (four) Μ voltage and depends. The temperature control circuit 100 detects the heating temperature of the heating control circuit, and when the heating control circuit sets the temperature preset value, the control switch control circuit 200 is turned off to stop outputting the DC voltage. In the middle, the input circuit 400 includes a keyboard - the output circuit _ includes a display unit and an alarm unit. The input circuit 4 is configured to input a selected temperature-like value to the temperature control circuit (10). The turn-up circuit 5 then displays the heating temperature of the heating control circuit 30G and the corresponding temperature preset value. The output circuit 500 emits an audible prompt when the heating temperature of the heating control circuit 300 reaches a temperature preset value. [0007] Please refer to FIG. 2' The temperature control circuit 10Q includes a temperature controlled chip. The temperature 099146813 form number Α0101 12 page 0992080497-0 201227201 control chip u includes a _%p 1, _ _ _ P3, ~ fourth pin p4, second bow foot 1 " 2, ~ third pin One and second pins h, p fifth pin P5 and a sixth bow l_p6. The four-pin P3 is used to rotate the control signal. The third and the fifth and sixth introductory ps (9) of the heating control J circuit 300 heat temperature. Output circuit 500. The 6-pole is electrically connected to the input circuit 4A and [0008] [0009] [0010] 099146813 The switch control circuit 2〇()~ and the second fuse F2.兮 her every relay, a first fuse F1 unit K1 and a second open thief include the coil unit, the first switch chip, the first and the first, the first K2. The coil unit is electrically connected to the temperature one and the second switch unit U-pin 1 Ρ2 to receive the control signal. The first receiving terminal 2 of the direct current is electrically connected to the power source 600 to electrically connect the first and second switching units U and K2 to the other end. ^ - /a - ΛΛ and the second fuses F1 and F2 -end. The other ends of the first and first fuses F1 and F are respectively electrically connected to the heating control circuit dU (i) the heating control circuit 3 〇〇 white 1 :: includes a heating element R and a temperature sensing element T. The first and second fuses FI and F2 are respectively electrically connected to the two ends of the device R. The other ends of the device are electrically connected to the first and fourth pins P3 of the temperature control chip U, respectively. P4. The temperature control circuit 100 detects the heating temperature of the heating control circuit 3G0 via the temperature sensing element. The heating element R is a heating resistor. The temperature sensing element T is a thermocouple. The input circuit 400 inputs a selected temperature preset value to the temperature control chip U. The temperature control chip U sends a control signal to the coil unit M of the relay according to the temperature preset value. The coil unit M is energized and the first And the second switch unit K1, K2 is attracted. The power supply 6〇〇 is the heating form number AOiOl page 6 / a total of 12 pages 0992 201227201 component R provides DC voltage to make it heat, and the temperature sensing element 1 [detect the test The temperature inside the box and through the third and fourth pins P3, P4 Returning the temperature control wafer U. When the temperature in the test box is equal to the preset value of the temperature input by the user, the temperature control wafer outputs a control signal to the coil unit of the relay to be powered off. The coil unit M is powered off. It does not work and disconnects the first and second switching units ΚΙ, K2. The power supply 6 〇〇 stops supplying the heating element R DC voltage, and the test box reaches the required test temperature value.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only intended to be a preferred embodiment of the present invention, and equivalent modifications or variations of the spirit of the present invention should be included in the following claims.

BRIEF DESCRIPTION OF THE DRAWINGS [0014] FIG. 1 is a block diagram of a preferred embodiment of a human proximity sensing device of the present invention. FIG. 2 is a circuit diagram of a human body proximity sensing device of FIG. [Main component symbol description] Temperature control circuit: 100 [0015] Switch control circuit: 20 0 [0016] Heating control circuit: 300 [0017] Input circuit: 400 [0018] Output circuit: 500 [0019] Power supply: 60 0

[0020] Temperature Control Wafer: U 099146813 Form Number Α 0101 Page 7 / Total 12 Page 0992080497-0 201227201

[0021] First fuse: FI

[0022] Second fuse: F2 [0023] Coil unit: Μ [0024] First switching unit: Κ 1 [0025] Second switching unit: Κ 2

Heating element: R

[0027] Temperature sensing element: Τ 0992080497-0 099146813 Form number Α 0101 Page 8 / Total 12 pages

Claims (1)

201227201 VII. Patent application scope: 1. A constant temperature control suspension, including - temperature (four) circuit, 1 control circuit and heating control circuit, the temperature control circuit is provided with a plurality of temperature preset values - the degree control circuit The control signal is sent according to the corresponding temperature preset value. The switch control circuit includes an input terminal, an output terminal, and a control terminal. The switch input circuit receives the DC voltage, and the switch control circuit receives the DC voltage through the control terminal. The control signal, the switch control circuit outputs the DC voltage at the output end according to the control signal being turned on, the heating control circuit receives the DC voltage and generates heat, and the temperature control circuit detects the heating temperature of the heating control circuit The temperature control device is controlled to be turned off and the DC voltage is stopped when the heating temperature of the heating control device reaches a preset temperature value. The thermostatic control device according to claim 1, wherein the thermostatic control device An input circuit and an output circuit for inputting a selected temperature to the temperature control circuit The preset value is used to display the heating temperature of the heating control circuit and the corresponding temperature preset value 0. The output circuit emits an audible prompt when the heating temperature of the heating control circuit reaches a preset temperature value. 3. The thermostatic control device of claim 2, wherein the input circuit comprises a keyboard, the output circuit comprising a display unit and an alarm unit. 4. The thermostatic control device of any one of claims 1 to 3, wherein the temperature control circuit comprises a temperature control chip, the temperature control chip comprising a first pin, a second pin, and a The third pin and the fourth pin are used to output a control signal, and the third and fourth pins are used for 099146813 Form No. A0101 Page 9 / Total 12 Page 0992080497-0 201227201 The heating temperature of the heating control circuit is detected. The thermostatic control device of claim 4, wherein the temperature control chip further comprises a fifth pin and a sixth pin, wherein the fifth and the first::: are electrically connected to the input circuit and the output, respectively. Circuit. The thermostatic control device of claim 4, wherein the switch control circuit comprises a relay, a _th fuse and a second fuse, the relay comprising a coil unit, a first door, and a m^ And a second switching unit electrically connected to the first and second pins of the temperature control chip to receive a control signal, wherein the first and second switches are electrically connected to each other to receive the DC The first and second fuse units are electrically connected to the first and second fuse terminals, and the other ends of the first and second fuses are electrically connected to the heating control circuit. The thermostatic control device of claim 6, wherein the heating control circuit comprises a heating element and a temperature sensing element, and the heating is electrically connected to the first and second fuses respectively. The two ends of the component are electrically connected to the temperature control crystal. The third and the third temperature control circuit detect the heating temperature of the heating circuit through the temperature sensing component. For example, in the plant temperature control device i described in claim 7, the heating element is a heating resistor, and the temperature sensing element is a thermocouple.人''' 099146813 Form No. A0101 Page 10 of 12 0992C