CN220913239U - Temperature control detection circuit - Google Patents
Temperature control detection circuit Download PDFInfo
- Publication number
- CN220913239U CN220913239U CN202322465040.0U CN202322465040U CN220913239U CN 220913239 U CN220913239 U CN 220913239U CN 202322465040 U CN202322465040 U CN 202322465040U CN 220913239 U CN220913239 U CN 220913239U
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- China
- Prior art keywords
- temperature control
- control switch
- relay
- detection circuit
- heating
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 27
- 230000000737 periodic effect Effects 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000013322 soy milk Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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- Control Of Resistance Heating (AREA)
Abstract
The utility model discloses a temperature control detection circuit which comprises a relay K1, a heating disc, a temperature control switch and a divider resistor RT3, wherein the temperature control switch is connected with the relay K1; the heating disc is connected with the temperature control switch and then is respectively connected with the relay K1, the divider resistor RT3 and the input/output pins of the main control chip, and the heating disc is used for periodically opening and closing the switch relay K1 in the heating process by adopting a periodic heating mode, so that whether the temperature control switch trips or not is detected through the input/output pins of the main control chip.
Description
Technical Field
The utility model relates to the field of circuits, in particular to a temperature control detection circuit.
Background
In the current household appliances, the household appliances needing to heat the liquid comprise a soymilk machine, a hot water kettle or a water heater and the like, and a temperature control switch is required to be arranged and connected with a heating disc, so that whether the temperature control switch trips or not is detected through the temperature control switch, a detection line is usually connected between the temperature control switch and the heating disc to a control circuit board, and the state of the temperature control switch is detected through connecting a divider resistor.
Disclosure of utility model
The utility model mainly aims to provide a temperature control detection circuit which can realize temperature control detection without an additional detection circuit so as to reduce the production cost.
The utility model provides a temperature control detection circuit which comprises a relay K1, a heating disc, a temperature control switch and a divider resistor RT3, wherein the temperature control switch is connected with the relay K1;
The heating plate is connected with the temperature control switch and then is respectively connected with the relay K1, the divider resistor RT3 and the input/output pins of the main control chip, and the relay K1 is periodically opened and closed in the heating process by adopting a periodic heating mode, so that whether the temperature control switch trips or not is detected through the input/output pins of the main control chip.
Preferably, the temperature control device further comprises resistors RT1 and RT2, wherein the heating disc is connected with the temperature control switch, then connected with the resistors RT1 and RT2, and then connected with the divider resistor RT3 and an input/output pin of the main control chip respectively.
The temperature control detection circuit has the beneficial effects that:
1. By adopting a periodic heating mode, the temperature control switch can be detected at a heating interval, so that temperature control detection can be realized without an additional detection circuit, and the production cost is reduced.
Drawings
FIG. 1 is a circuit diagram of a temperature control detection circuit according to the present utility model;
reference numerals in the drawings: 1. heating plate, 2, temperature control switch.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1, an embodiment of a temperature control detection circuit of the present utility model is presented:
A temperature control detection circuit comprises a relay K1, a heating disc 1, a temperature control switch 2, a divider resistor RT3 and resistors RT1 and RT2.
The heating plate 1 is connected with the temperature control switch 2 and then is connected with the relay K1, and the heating plate 1 is connected with the temperature control switch 2 and then is connected with the resistors RT1 and RT2 and then is connected with the divider resistor RT3 and the input/output pin IO1 of the main control chip respectively.
In practical use, a periodic heating mode, such as a soymilk machine, can be adopted, wherein the heating is performed for 17 seconds and then the heating is stopped for 3 seconds. When the relay K1 is closed, the heating disc 1 works to heat, and the input/output pin IO1 of the main control chip is at a low level. When the relay K1 is opened and the temperature control switch 2 is not tripped, the input/output pin IO1 of the main control chip is at a high level, and the final output result is a square wave. When the relay K1 is disconnected and the temperature control switch 2 trips, the input/output pin IO1 of the main control chip is at a low level. Therefore, whether the temperature control switch 2 trips or not can be known by detecting whether the square wave exists in the output of the input/output pin IO1 of the main control chip.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the present utility model and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the present utility model.
Claims (2)
1. A temperature control detection circuit is characterized in that,
The device comprises a relay K1, a heating disc, a temperature control switch and a divider resistor RT3;
The heating plate is connected with the temperature control switch and then is respectively connected with the relay K1, the divider resistor RT3 and the input/output pins of the main control chip, and the relay K1 is periodically opened and closed in the heating process by adopting a periodic heating mode, so that whether the temperature control switch trips or not is detected through the input/output pins of the main control chip.
2. The temperature control detection circuit according to claim 1, further comprising resistors RT1 and RT2, wherein the heating plate is connected to the temperature control switch, and then connected to the resistors RT1 and RT2, and then connected to the voltage dividing resistor RT3 and the input/output pins of the main control chip, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322465040.0U CN220913239U (en) | 2023-09-12 | 2023-09-12 | Temperature control detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322465040.0U CN220913239U (en) | 2023-09-12 | 2023-09-12 | Temperature control detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220913239U true CN220913239U (en) | 2024-05-07 |
Family
ID=90920165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322465040.0U Active CN220913239U (en) | 2023-09-12 | 2023-09-12 | Temperature control detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220913239U (en) |
-
2023
- 2023-09-12 CN CN202322465040.0U patent/CN220913239U/en active Active
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| GR01 | Patent grant |