CN101327096A - Control circuit of electric pressure cooker - Google Patents
Control circuit of electric pressure cooker Download PDFInfo
- Publication number
- CN101327096A CN101327096A CNA2008100295835A CN200810029583A CN101327096A CN 101327096 A CN101327096 A CN 101327096A CN A2008100295835 A CNA2008100295835 A CN A2008100295835A CN 200810029583 A CN200810029583 A CN 200810029583A CN 101327096 A CN101327096 A CN 101327096A
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- Prior art keywords
- module
- humidity detection
- pressure cooker
- detection module
- control circuit
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- 239000004020 conductor Substances 0.000 claims abstract description 10
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 11
- 239000004065 semiconductor Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
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Abstract
The invention discloses a control circuit of an electric pressure cooker, in particular to a control circuit of an electric pressure cooker with a humidity detection module. The humidity detection device comprises a control module, a power supply module, a humidity detection module and a load, wherein the power supply module and the humidity detection module are electrically connected with the control module, the load is electrically connected with the power supply module, the control module controls the on-off of a load power supply according to a signal of the humidity detection module, and the humidity detection module is characterized in that the humidity detection module is a voltage division circuit consisting of an exposed conductor pair and a first resistor (R1). The humidity detection module is a voltage division circuit consisting of the exposed conductor pair and the first resistor, and the exposed conductor pair directly detects the resistance value change of air caused by the humidity change, so that the humidity detection device has the advantages of high humidity detection speed, high accuracy, low cost and simple and reliable structure.
Description
Technical field
The present invention relates to a kind of electrical pressure cooker control circuit, particularly a kind of electrical pressure cooker control circuit that has humidity detecting module.The renovation technique that belongs to electrical pressure cooker control circuit.
Background technology
The humidity detecting module that present electrical pressure cooker control circuit is provided with, generally comprise humistor or semiconductor humidity sensor, but humistor generally is the wet quick property device for preparing according to the material behavior of device, need moisture signal to be converted to resistance signal by humistor, its detection speed is slow, the degree of accuracy is not high, and semiconductor humidity sensor cost is too high, and therefore above-mentioned humistor and semiconductor humidity sensor all are very limited on using.
Summary of the invention
The objective of the invention is to provides a kind of cost low at the problems referred to above, detects humidity speed electrical pressure cooker control circuit soon and accurately.
Technical scheme of the present invention is: a kind of electrical pressure cooker control circuit, comprise control module, the power module that is electrically connected with control module and humidity detecting module, the load that is electrically connected with power module, wherein control module is according to the break-make that the signal of humidity detecting module comes the control load power supply, it is characterized in that described humidity detecting module is the bleeder circuit that is made of the bare exposed conductor pair and first resistance.
The present invention is because the humidity detecting module that adopts is the bleeder circuit that is made of the bare exposed conductor pair and first resistance, the change in resistance that bare exposed conductor produces owing to the humidity variation direct mensuration air, therefore, it is fast that it not only detects humidity speed, degree of accuracy height, and cost is low, simple and reliable for structure.
Description of drawings
Fig. 1 is the structural representation of embodiments of the invention.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Embodiment:
As shown in Figure 1, electrical pressure cooker control circuit comprises control module, the power module that is electrically connected with control module and humidity detecting module, the load that is electrically connected with power module, and wherein control module is come the break-make of control load power supply according to the signal of humidity detecting module.
Comprise bare exposed conductor in the humidity detecting module to A, bare exposed conductor constitutes bleeder circuit to Vdd to A and first resistance R 1, and this voltage division signal is linked into the CPU of control module.
Comprise CPU, indicator lamp LED, button SW in the control module.Indicator lamp LED one end second resistance R 2 back of contacting is connected an other end ground connection with CPU.Button SW inserts CPU in two ends.The electric command signal of CPU inserts the relay K of power module by lead.
Transformer T, relay K are arranged in the power module.The two poles of the earth of the primary coil of transformer are electrically connected with the city, and the output of secondary coil provides control module and the needed DC voltage Vdd of humidity detecting module after processing such as rectifying and wave-filtering, and heater B inserts civil power by relay K.The control utmost point of relay K inserts Vdd and CPU respectively.
During operate as normal, press button SW, CPU exports continuous electronegative potential to relay K after receiving push button signalling, the relay K closure, and heater B connects work; CPU exports continuous electronegative potential to indicator lamp LED simultaneously, makes indicator lamp LED continue luminous indication normal operating conditions.
When electric pressure cooking saucepan was in the big or electric pressure cooking saucepan generation vapour leakage of humidity, bare exposed conductor formed less resistance value to A, and the influence that the electronegative potential that originally outputs to CPU is subjected to current potential Vdd becomes high potential; CPU stops when receiving potential change signal perception abnormal conditions to relay K output electronegative potential heater B being quit work on the one hand, and output simultaneously is interrupted electronegative potential to indicator lamp LED, makes indicator lamp LED flicker indication abnormal work state.
Claims (1)
1, a kind of electrical pressure cooker control circuit, comprise control module, the power module that is electrically connected with control module and humidity detecting module, the load that is electrically connected with power module, wherein control module is characterized in that according to the break-make that the signal of humidity detecting module comes the control load power supply described humidity detecting module is to (A) bleeder circuit with first resistance (R1) formation by bare exposed conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100295835A CN101327096A (en) | 2008-07-18 | 2008-07-18 | Control circuit of electric pressure cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100295835A CN101327096A (en) | 2008-07-18 | 2008-07-18 | Control circuit of electric pressure cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101327096A true CN101327096A (en) | 2008-12-24 |
Family
ID=40203283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100295835A Pending CN101327096A (en) | 2008-07-18 | 2008-07-18 | Control circuit of electric pressure cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101327096A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105852665A (en) * | 2016-05-30 | 2016-08-17 | 北京小焙科技有限公司 | Oven |
| CN113065735A (en) * | 2020-12-25 | 2021-07-02 | 泰州可以信息科技有限公司 | Intelligent steam leakage identification platform |
-
2008
- 2008-07-18 CN CNA2008100295835A patent/CN101327096A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105852665A (en) * | 2016-05-30 | 2016-08-17 | 北京小焙科技有限公司 | Oven |
| CN113065735A (en) * | 2020-12-25 | 2021-07-02 | 泰州可以信息科技有限公司 | Intelligent steam leakage identification platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081224 |