CN205539169U - From master control temperature floor zero cross detection circuit - Google Patents
From master control temperature floor zero cross detection circuit Download PDFInfo
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- CN205539169U CN205539169U CN201620291592.1U CN201620291592U CN205539169U CN 205539169 U CN205539169 U CN 205539169U CN 201620291592 U CN201620291592 U CN 201620291592U CN 205539169 U CN205539169 U CN 205539169U
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- zero cross
- photoelectrical coupler
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Abstract
The utility model relates to a from master control temperature floor zero cross detection circuit, its characteristics are, be connected including zero -crossing detection element circuit and controller electricity, this circuit has been economized the pulse and has been gone links such as transformer, rectifier bridge, directly utilizes optoelectronic coupler to detect the two -way zero cross signal of alternating current for controller detectable in the floor is through all wave numbers of floor alternating current signal, thereby provides the condition for accurate control floor temperature. Have simple structure, the controlled temperature is accurate, advantages such as dependable performance.
Description
Technical field
This utility model relates to controlling technical field, specifically, is a kind of autonomous temperature-controlled floor board zero cross detection circuit.
Background technology
Open (bulletin) number 104390261A of Chinese patent, disclose invention entitled: autonomous temperature control electrical heating composite floor board and the application for a patent for invention of master control set thereof, it is to be integrated with autonomous temperature-adjusting circuit in floor, floor Autonomous Control temperature function can be realized, but because circuit limits, temperature controls inaccuracy, and the comfort level of user's body-sensing is not good enough, nor time-sharing heating function can be realized very well, the highest to power consumption.
Growth along with the industrial electricity of China, terminal supply line condition is increasingly sophisticated, the most higher near the line voltage of distribution transformer, and voltage fluctuates with the change of supply load, especially currently in most cases, line voltage is higher, and electrical equipment can be caused to increase often in overlond running state, energy consumption, reliability of operation reduces, fault rate improves, and adds the electric cost expenditure of user, and overhaul of the equipments expense improves the most therewith.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of simple in construction, control temperature accurate, the autonomous temperature-controlled floor board zero cross detection circuit of dependable performance, this control circuit can detect the cycle through floor alternating current, control the temperature on floor by controlling cycle, thus improve temperature controlled accuracy.
The scheme solving technical problem is: a kind of autonomous temperature-controlled floor board zero cross detection circuit, it is characterized in that, it includes that zero passage detection element circuit is electrically connected with the controller, and described zero passage detection element circuit includes: is connected, by resistance R1, photoelectrical coupler U1, resistance R3 and level driving chip U3:A, the positive half-wave zero passage detection loop formed and is connected, by resistance R2, photoelectrical coupler U2, resistance R4 and level driving chip U3:B, the negative half-wave zero passage detection loop formed；When the positive half-wave of capable AC signal passes through, photoelectrical coupler U1 produces a positive half-wave zero cross signal and gives controller U4 through level driving chip U3:A, when the negative half-wave of capable AC signal passes through, photoelectrical coupler U2 produces a negative half-wave zero cross signal and gives controller U4 through level driving chip U3:B.
One of the present utility model autonomous temperature-controlled floor board zero cross detection circuit, eliminate the link such as synchrotrans, rectifier bridge, directly utilize photoelectrical coupler detection alternating current two-way zero-crossing signal, add the stability of circuit, within making circuit can be directly integrated into floor, there is simple in construction, control temperature accurate, high reliability.
Accompanying drawing explanation
Fig. 1 is a kind of autonomous temperature-controlled floor board zero cross detection circuit schematic diagram of this utility model.
In figure: 10 zero passage detection element circuits, 20 controllers.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
With reference to Fig. 1, one of the present utility model autonomous temperature-controlled floor board zero cross detection circuit, including zero passage detection element circuit 10 and controller 20.L in described zero passage detection element circuit 10 is connected to the live wire of power supply, and N is connected to the zero line of power supply.When the positive half-wave of power supply enters, the voltage of L end being higher than the voltage of N end, electric current flows through resistance R1 from L end and flows into 2 pins outflows through 1 pin of photoelectrical coupler U1 again, finally flows into N ends, thus, the lumination of light emitting diode within photoelectrical coupler U1.When the light emitting diode of photoelectrical coupler U1 is the most luminous, 3 pins and 4 pins of photoelectrical coupler U1 are not turned on, and resistance R3 does not has electric current, and therefore the level on 3 pins of photoelectrical coupler U1 is high level VCC.In the present embodiment, VCC is 5V level.During the lumination of light emitting diode of photoelectrical coupler U1,3 pins of photoelectrical coupler U1 and the conducting of 4 pins, the level of 3 pins of photoelectrical coupler U1 is close to 0V, thus produces a trailing edge signal on 3 pins of photoelectrical coupler U1.In this circuit, this trailing edge signal is defined as positive zero cross signal.Positive zero cross signal enters through 1 pin of over level driving chip U3:A, exports to the P3.2 pin of controller U4 from its 2 pin after driving, and controller U4 is controller 20.Owing to now L terminal voltage is more than N terminal voltage, so it is open circuit that 2 pins that L end is to resistance R2 to photoelectrical coupler U2 arrive 1 pin of photoelectrical coupler U2 again to arrive this branch road of N end again.Light emitting diode within photoelectrical coupler U2 is the most luminous.So the level of 3 pins of photoelectrical coupler U2 is high level all the time, does not the most bear zero cross signal and enter.
When the negative half-wave of power supply enters, the voltage of N end is higher than L end, electric current flows through resistance R2 from N end and flows into 2 pins of photoelectrical coupler U2, L end is flowed into again from 1 pin of photoelectric coupling U2, therefore, the lumination of light emitting diode within photoelectrical coupler U2,3 pins of photoelectrical coupler U2 and the conducting of 4 pins, the level of 3 pins of photoelectrical coupler U2 becomes low level close to 0V from high level 5V, thus produces a trailing edge signal.In this circuit, this trailing edge signal is defined as negative zero cross signal.Negative zero cross signal enters 3 pins of level driving chip U3:B, exports to the P3.3 pin of controller U4 from its 4 pin after driving.Owing to now N terminal voltage is more than L terminal voltage, so N end is not turned on to resistance this section of branch road of R1 to L end to 2 pins of photoelectrical coupler U1 to its 1 pin, therefore the light emitting diode within photoelectrical coupler U1 is the most luminous, 3 pins of photoelectrical coupler U1 remain Gao Ping, i.e. do not have positive zero cross signal to enter.
In the present embodiment, described photoelectrical coupler U1 and U2 selects TLP521, described level driving chip U3 to use 74LS244,74LS273,74LS373 or 74LS37, and described controller U4 uses AT89S2051 or AT89S2052.
Although being disclosed the present invention by above example, but protection scope of the present invention is not limited thereto, and under conditions of without departing from present inventive concept, the deformation of being done above each component, replacement etc. all will fall within the claims of the present invention.
Claims (1)
1. an autonomous temperature-controlled floor board zero cross detection circuit, it is characterized in that, it includes that zero passage detection element circuit is electrically connected with the controller, and described zero passage detection element circuit includes: is connected, by resistance R1, photoelectrical coupler U1, resistance R3 and level driving chip U3:A, the positive half-wave zero passage detection loop formed and is connected, by resistance R2, photoelectrical coupler U2, resistance R4 and level driving chip U3:B, the negative half-wave zero passage detection loop formed；When the positive half-wave of capable AC signal passes through, photoelectrical coupler U1 produces a positive half-wave zero cross signal and gives controller U4 through level driving chip U3:A, when the negative half-wave of capable AC signal passes through, photoelectrical coupler U2 produces a negative half-wave zero cross signal and gives controller U4 through level driving chip U3:B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620291592.1U CN205539169U (en) | 2016-04-09 | 2016-04-09 | From master control temperature floor zero cross detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620291592.1U CN205539169U (en) | 2016-04-09 | 2016-04-09 | From master control temperature floor zero cross detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205539169U true CN205539169U (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620291592.1U Expired - Fee Related CN205539169U (en) | 2016-04-09 | 2016-04-09 | From master control temperature floor zero cross detection circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN205539169U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872695A (en) * | 2018-07-04 | 2018-11-23 | 广东省测试分析研究所（中国广州分析测试中心） | Two-phase zero passage signal detection circuit and signal transmission through fiber system |
-
2016
- 2016-04-09 CN CN201620291592.1U patent/CN205539169U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872695A (en) * | 2018-07-04 | 2018-11-23 | 广东省测试分析研究所（中国广州分析测试中心） | Two-phase zero passage signal detection circuit and signal transmission through fiber system |
| CN108872695B (en) * | 2018-07-04 | 2020-08-14 | 广东省测试分析研究所（中国广州分析测试中心） | Two-phase zero-crossing signal detection circuit and optical fiber signal transmission system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20190409 |