CN203254034U - Temperature control exhaust fan circuit of iron stand - Google Patents
Temperature control exhaust fan circuit of iron stand Download PDFInfo
- Publication number
- CN203254034U CN203254034U CN 201220658287 CN201220658287U CN203254034U CN 203254034 U CN203254034 U CN 203254034U CN 201220658287 CN201220658287 CN 201220658287 CN 201220658287 U CN201220658287 U CN 201220658287U CN 203254034 U CN203254034 U CN 203254034U
- Authority
- CN
- China
- Prior art keywords
- circuit
- temperature control
- iron stand
- chip microcomputer
- exhaust fan
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to an application circuit, in particular to a temperature control exhaust fan circuit of an iron stand. A power supply circuit and a temperature sensor circuit of the temperature control exhaust fan circuit of the iron stand are connected with a single chip microcomputer. The single chip microcomputer is connected with a switching circuit. According to the temperature control exhaust fan circuit of the iron stand, the single chip microcomputer is used for controlling the circuit to produce positive pulses or negative pulses to the switching circuit so as to judge whether the exhaust fan works or not according to the temperature of the electric soldering iron and convenience is brought to workers.
Description
Technical field
The utility model relates to application circuit, particularly a kind of Iron Stand temperature control air exhauster circuit.
Background technology
Iron Stand temperature control air exhauster circuit major function is the cigarette that rosin when absorbing electric iron work, scolding tin (leaded: plumbous very large to harm) produce.When at present people used electric iron, the cigarette that produces was sucked in the lung by human body, and the harm people's is healthy, Iron Stand temperature control air exhauster circuit be exactly when electric iron work the cigarette of generation siphon away.Although some factory's welding bench is equipped with the environment-friendly type Iron Stand, no matter whether electric iron is welding, this environment-friendly type Iron Stand is all in work, and is very not energy-conservation.For reducing the harm to people's health, optimize the equal Iron Stand structure of environment-friendly type, reach desirable setting requirement, make things convenient for different user demands.
If Iron Stand temperature control air exhauster main circuit uses 1 I/O mouth output switching signal of single-chip microcomputer, by the switch of relay drive circuit control relay, and then the Kai Heguan of control air exhauster, the air exhauster power supply is to adopt the 220V power supply directly to power.
The utility model content
The purpose of this utility model is to detect the temperature of electric iron, uses control circuit to detect.The smog that produces when providing a kind of device fast electric iron to be worked siphons away.
The purpose of this utility model is achieved through the following channels: power circuit, the temperature sensor circuit of Iron Stand temperature control air exhauster circuit all connect single-chip microcomputer, single-chip microcomputer connecting valve circuit.
Further, connecing the single-chip microcomputer of stating is connected with clock circuit and reset circuit.
Further, described single-chip microcomputer model is AT89S51.
Further, described temperature sensor model is DS18B20.
The utility model Iron Stand temperature control air exhauster circuit adopts single chip machine controlling circuit generation positive pulse or negative pulse to on-off circuit, thereby judges that according to the electric iron temperature conditions whether air exhauster works, and offers convenience to the staff.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail:
Fig. 1 is the utility model structure block diagram;
Fig. 2 is the utility model circuit diagram;
Among the figure, power circuit 1, single-chip microcomputer 2, temperature sensor circuit 3, on-off circuit 4, clock circuit 5, reset circuit 6.
The specific embodiment
As shown in Figure 1, power circuit 1, the temperature sensor circuit 3 of the utility model Iron Stand temperature control air exhauster circuit all connect single-chip microcomputer 2, single-chip microcomputer 2 connecting valve circuit 4, and described single-chip microcomputer 2 is connected with clock circuit 5 and reset circuit 6.
As shown in Figure 2, power circuit 1 obtains the alternating voltage of 12V after through transformer T1 step-down by the 220v alternating current, through bridge rectifier D1 rectification, passes through capacitor C 1, C3 filtering again.After 7805 voltage stabilizings of U2 three terminal integrated voltage stabilizer, finally by C2, C4 filtering obtain+the 5V DC voltage excessively.
Single-chip microcomputer 2 minimum systems are comprised of single-chip microcomputer (AT89S51) and peripheral circuit.Wherein VCC (the 40th pin) forms power supply circuits with GND (the 20th pin): its main purpose is to provide power supply to single-chip minimum system, and generally available+5V direct current is powered.Clock circuit 5 is comprised of capacitor C 5, C6 and crystal oscillator Y1; A high postiive gain sign-changing amplifier that is used for consisting of oscillator is arranged in the monolithic Bigpian, and pin XAL1 and XAL2 are respectively the input and output sides of this amplifier.Two termination crystal oscillators at them consist of stable self-excited oscillator.Reliable when external crystal oscillator is usually installed two 20pF electric capacity and can be guaranteed the stable and work of oscillator, frequency is played the fine setting effect.Reset circuit 6 is comprised of C7, R1, S1.Reset circuit 6 can make that miscellaneous part is in a definite original state in CPU and the system, and brings into operation from this state.
Electric iron temperature sensor circuit 3 is comprised of U3 DS18B20.Wherein the 1st pin is power supply pin VCC; The 3rd pin GND represents ground connection; The 2nd pin is that the RW control end is connected with single-chip microcomputer P21.
On-off circuit 4 is by single-chip microcomputer P27 output switch control signal.P27 links to each other with the base stage of triode Q1.The emitter stage that the colelctor electrode of Q1 is received ground, Q1 links to each other with power supply VCC by relay coil, the duty of coming control circuit to begin, stop by relay switch.The outlet side of relay links to each other with AC power SW21.
System principle:
Native system adopts the output state (circuit output positive pulse or negative pulse) of DS18B20 temperature sensor circuit, and adhesive and disconnected the closing of coming control relay are realized pulses switch.
Drive relay with the positive-negative-positive triode, relay coil is received between power positive end and the ground as the emitter stage load.When input signal was low level, the triode conducting had electric current to flow through, the relay adhesive in the relay coil.When input signal was high level, the triode cut-off did not have electric current to flow through in the relay coil, and then relay disconnects.
When the temperature that detects as DS18B20 did not reach the temperature value that sets, P27 exported high level, triode Q1 cut-off, and the relay output side switch disconnects.SW21 and SW22 connect, and outside impulse electromagnetic valve and 220V alternating current are disconnected.Thereby judge electric iron in normal operation according to the duty of DS18B20, air exhauster is also started working simultaneously.
When the temperature that detects as DS18B20 reaches the temperature value that sets, P27 output low level, triode Q1 conducting, the adhesive of relay output side switch.SW21 and SW23 connect, and outside impulse electromagnetic valve and 220V alternating current are connected.Thereby judge that according to the duty of DS18B20 electric iron does not work on, air exhauster also quits work simultaneously.
Claims (4)
1. Iron Stand temperature control air exhauster circuit, it is characterized in that: power circuit (1), the temperature sensor circuit (3) of Iron Stand temperature control air exhauster circuit all connect single-chip microcomputer (2), single-chip microcomputer (2) connecting valve circuit (4).
2. Iron Stand temperature control air exhauster circuit as claimed in claim 1, it is characterized in that: described single-chip microcomputer (2) is connected with clock circuit (5) and reset circuit (6).
3. Iron Stand temperature control air exhauster circuit as claimed in claim 1, it is characterized in that: described single-chip microcomputer (2) model is AT89S51.
4. Iron Stand temperature control air exhauster circuit as claimed in claim 1, it is characterized in that: described temperature sensor circuit (3) model is DS18B20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220658287 CN203254034U (en) | 2012-12-04 | 2012-12-04 | Temperature control exhaust fan circuit of iron stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220658287 CN203254034U (en) | 2012-12-04 | 2012-12-04 | Temperature control exhaust fan circuit of iron stand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203254034U true CN203254034U (en) | 2013-10-30 |
Family
ID=49466640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220658287 Expired - Fee Related CN203254034U (en) | 2012-12-04 | 2012-12-04 | Temperature control exhaust fan circuit of iron stand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203254034U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104209622A (en) * | 2014-09-20 | 2014-12-17 | 庄景阳 | Cooling device of induction electric soldering iron welding piece |
| CN104801807A (en) * | 2015-04-29 | 2015-07-29 | 苏州华徕光电仪器有限公司 | Electric soldering iron harmful gas automatic eliminating circuit |
-
2012
- 2012-12-04 CN CN 201220658287 patent/CN203254034U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104209622A (en) * | 2014-09-20 | 2014-12-17 | 庄景阳 | Cooling device of induction electric soldering iron welding piece |
| CN104801807A (en) * | 2015-04-29 | 2015-07-29 | 苏州华徕光电仪器有限公司 | Electric soldering iron harmful gas automatic eliminating circuit |
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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 |
Granted publication date: 20131030 Termination date: 20141204 |
|
| EXPY | Termination of patent right or utility model |