CN203213797U - Automatic door control circuit - Google Patents
Automatic door control circuit Download PDFInfo
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- CN203213797U CN203213797U CN2013201551676U CN201320155167U CN203213797U CN 203213797 U CN203213797 U CN 203213797U CN 2013201551676 U CN2013201551676 U CN 2013201551676U CN 201320155167 U CN201320155167 U CN 201320155167U CN 203213797 U CN203213797 U CN 203213797U
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Abstract
The utility model relates to an automatic door control circuit. The automatic door control circuit is characterized by comprising a 5V direct current power supply, a three-point capacitance oscillation circuit, a resistance-capacitance amplification circuit, a voltage doubling detection and filtering circuit, a direct current signal amplification and state indication circuit and a direct current relay driving circuit. According to the automatic door control circuit, a human body heat source is not utilized as a signal source but human body or vehicle approaching induction is utilized as control signals of automatic opening or automatic closing of a door in another way. The automatic door control circuit has the advantages that the design structure is simple, the working performance is reliable, the circuits are produced through ordinary electronic parts and components, the cost is low, and the like.
Description
Technical field
The utility model belongs to the electronic auto-control technology field, relates to a kind of control circuit of automatic door.
Background technology
Usually the automatic door of public place adopts pyroelectric infrared transducer more, pyroelectric infrared transducer receives the faint infrared signal that human body sends, by amplifying circuit infrared signal is amplified, drive the work of DC relay control reversing motor then, realized that people Lai Shimen opens automatically, door was closed automatically when the people left.
Control circuit of automatic door described in the utility model not end user's body heat source is originated as signal, but look for another way utilize human body or vehicle near the time the induction control signal of opening or closing automatically automatically as the gate.Its circuit has that project organization is succinct, reliable working performance, circuit use all that the ordinary electronic components and parts are made, advantage such as cheap.
Below describe control circuit of automatic door described in the utility model related relevant technologies content in implementation process in detail.
The utility model content
Goal of the invention and beneficial effect: control circuit of automatic door described in the utility model not end user's body heat source is originated as signal, but look for another way utilize human body or vehicle near the time the induction control signal of opening or closing automatically automatically as the gate.Control circuit of automatic door has that project organization is succinct, reliable working performance, circuit use all that the ordinary electronic components and parts are made, advantage such as cheap.
The circuit working principle: the major part of control circuit of automatic door is an oscillating circuit that is in critical condition, as human body or vehicle during near inductive probe L, the frequency of oscillation of the oscillating circuit of being made up of elements such as inductive probes will great changes will take place, the Q value of inductive probe L is reduced, make the oscillating circuit be in the threshold oscillation state quit work, and then controlling the automatic unlatching at gate or close automatically by related circuit.Red light emitting diodes LED lights or extinguishes and is used to indicate duty in the circuit.
NPN type triode BG1 and inductive probe L, oscillating capacitance C1, oscillating capacitance C2 have constituted a bikini oscillating circuit in circuit.When the base stage of NPN type triode BG1 in the oscillating circuit has a positive signal, because the inverting function of triode makes the collector signal of NPN type triode BG1 for negative.The signal polarity at the two ends of oscillating capacitance C1, oscillating capacitance C2 is negative just down on all being, signal is by the feedback of capacitor C 3, signal on the NPN type triode BG1 base stage and original signal same-phase, because be positive feedback, so circuit can produce vibration, the potentiometer RP that inserts can weaken the intensity of positive feedback signal in the circuit, and it is used for the threshold of regulating circuit starting of oscillation.
About 37～the 40KHz of the frequency of oscillation of oscillating circuit, frequency of oscillation is mainly determined by inductive probe L, oscillating capacitance C1, oscillating capacitance C2.Regulator potentiometer RP can control the size of positive feedback signal, and control circuit is in firm starting of oscillation state.Resistance R 1 is the biasing resistor of NPN type triode BG1.Faint oscillator signal is delivered to NPN type triode BG2 by coupling capacitance C4 and is carried out voltage amplification.Because of the signal amplitude after amplifying still smaller, so select for use two detector diode D1, detector diode D2 and coupling capacitance C5, filter capacitor C6 to form the multiplication of voltage detecting circuit, DC voltage behind the detection filter can make NPN type triode BG3 work, at this moment the colelctor electrode of NPN type triode BG3 is in low level, when red light emitting diodes LED gets electric lighting, BG4 provides bias voltage to make its conducting for NPN type triode, drives the running of DC relay J control reversing motor at last.
As human body or vehicle during near inductive probe L, be in the oscillating circuit failure of oscillation immediately of vibration critical condition, signal by coupling capacitance C4 will disappear, the base stage of NPN type triode BG3 can not get forward voltage, and NPN type triode BG3 is ended, red light emitting diodes LED is extinguished by lighting to become.
Technical scheme: control circuit of automatic door, it comprises 5V dc source, bikini electric capacity oscillating circuit, rc-coupled amplification circuit, multiplication of voltage detection and filter circuit, direct current signal amplification and condition indication circuit, DC relay drive circuit, it is characterized in that:
Bikini electric capacity oscillating circuit: it is by inductive probe L, oscillating capacitance C1, oscillating capacitance C2, capacitor C 3, NPN type triode BG1, biasing resistor R1, potentiometer RP and resistance R 2 are formed, oscillating capacitance C1 and an end that meets potentiometer RP after oscillating capacitance C2 is connected in series, the other end of oscillating capacitance C1 and oscillating capacitance C2 connects the two ends of inductive probe L respectively, one end of the last termination capacitor C 3 of inductive probe L, the base stage of the other end of capacitor C 3 and NPN type triode BG1, one end of resistance R 1 links to each other, the anodal VCC of the colelctor electrode connection circuit of the other end of resistance R 1 and NPN type triode BG1, the emitter stage of NPN type triode BG1 connects the other end of potentiometer RP and an end of movable end and resistance R 2 thereof, the following termination circuit ground GND of the other end of resistance R 2 and inductive probe L;
Rc-coupled amplification circuit: it is made up of coupling capacitance C4, NPN type triode BG2, biasing resistor R3 and load resistance R4, the emitter stage of the termination NPN type triode BG1 of coupling capacitance C4, the base stage of another termination NPN type triode BG2 of coupling capacitance C4 and the end of biasing resistor R3, the anodal VCC of the other end connection circuit of biasing resistor R3, the colelctor electrode of NPN type triode BG2 connects the end of load resistance R4, the anodal VCC of the other end connection circuit of load resistance R4, the emitter stage connection circuit ground GND of NPN type triode BG2;
Multiplication of voltage detection and filter circuit: it is made up of coupling capacitance C5, detector diode D1, detector diode D2 and filter capacitor C6, the colelctor electrode of NPN type triode BG2 connects the end of coupling capacitance C5, the negative pole of another termination detector diode D1 of coupling capacitance C5 and the positive pole of detector diode D2, the negative pole of detector diode D2 meets the base stage of positive pole and the NPN type triode BG3 of filter capacitor C6, the negative pole connection circuit ground GND of the positive pole of detector diode D1 and filter capacitor C6;
The DC relay drive circuit: it is made up of NPN type triode BG4, DC relay J and protection diode D3, the base stage of NPN type triode BG4 connects the colelctor electrode of NPN type triode BG3, the colelctor electrode of NPN type triode BG4 connect DC relay J coil an end and and the positive pole of protection diode D3, the other end of DC relay J coil and and the anodal VCC of negative pole connection circuit of protection diode D3, the emitter stage connection circuit ground GND of NPN type triode BG4;
Direct current signal amplifies and condition indication circuit: it is made up of NPN type triode BG3, red light emitting diodes LED and dropping resistor R5, the base stage of NPN type triode BG3 connects the negative pole of detector diode D2, the colelctor electrode of NPN type triode BG3 connects the negative pole of red light emitting diodes LED, the end of the anodal connecting resistance R5 of red light emitting diodes LED, the anodal VCC of the other end connection circuit of resistance R 5, the emitter stage connection circuit ground GND of NPN type triode BG3;
The positive pole of 5V dc source links to each other with circuit anode VCC, and the negative pole of 5V dc source and circuit ground GND join.
Description of drawings
Accompanying drawing 1 is the fundamental diagram of control circuit of automatic door; Accompanying drawing 2 is magnetic core and coil baffle plate schematic diagrames of making the inductive probe L of control circuit of automatic door.
The specific embodiment
According to control circuit of automatic door fundamental diagram and the description of drawings shown in the accompanying drawing 1, and according to annexation between the components and parts in the described each several part circuit of utility model content, and the components and parts technical data described in the embodiment requires and the circuit production main points are implemented to realize the utility model, below in conjunction with embodiment correlation technique of the present utility model is further described.
The selection of components and parts and making
1. in order to improve the stability of circuit working, the multiplication factor of NPN type triode pipe BG1 should not be too big, and the control of β value is in the too big stability that influences work easily of 70～90, β value;
2. the oscillating capacitance C1 in the bikini oscillator circuit, oscillating capacitance C2 require selection work stability ceramic disc capacitor or select ROHS for use preferably, require the capacity parameter of oscillating capacitance C1, oscillating capacitance C2 to equate;
3. inductive probe L is an inductance coil that has the intermediate frequency magnetic core, ￠ 10mm magnetic core selects for use the antenna bar magnet intercepting 20mm in the transistor radio long, be the baffle plate of 2 ￠ 20mm of bakelite paperboard of 1.5mm with insulating slab or thickness, 2 middle concentric circle holes that respectively dig a ￠ 10mm of baffle plate, be nested in the two ends of ￠ 10mm magnetic core then with glue, the inductance coil magnetic core skeleton of making, see shown in the Figure of description 2, flat around 330 circles at magnetic core skeleton higher slice with ￠ 0.25mm enamel-covered wire, use the epoxy resin sealing at last;
4. components and parts title and technical data
| Component symbol haoHAO number | The components and parts title | Technical data | Quantity | Remarks |
| BG1 | NPN type triode | 2CS9014、β70～90 | 1 | Plastic packaging |
| BG2～BG4 | NPN type triode | 2CS9014、β≥180 | 3 | Plastic packaging |
| D1、D2 | Detector diode | Glassivation 1N60 | 2 | |
| D3 | Silicon rectifier diode | 1N4001 | 1 | The holding circuit effect |
| LED | Red light emitting diodes | ￠5、LED | 1 | The state indication |
| L | Inductive probe | ￠ 10 intermediate frequency magnetic cores | 1 | Inductance coil |
| RP | Potentiometer | 5.6KΩ | 1 | |
| R1 | Resistance | 1/8W、680KΩ | 1 | Biasing resistor |
| R2 | Resistance | 1/8W、3.3 |
2 | Negative feedback resistor |
| R3 | Resistance | 1/8W、2MΩ | 1 | Biasing resistor |
| R4 | Resistance | 1/8W、6.8KΩ | 1 | Load resistance |
| R5 | Resistance | 1/8W、82Ω | 1 | Dropping resistor |
| C1、C2、C3 | Electric capacity | Ceramic disc capacitor, 0.01 μ F | 3 | Oscillating capacitance |
| C4、C5 | Electric capacity | Electric capacity of the dacron, 0.22 |
2 | Coupling capacitance |
| C6 | Electrochemical capacitor | 4.7μF/10V? | 1 | Filter capacitor |
| J | DC relay | Coil working voltage is 5V | 1 | Contact current 〉=5A |
Circuit production main points and circuit debugging
Accompanying drawing 1 circuit working schematic diagram to specifications, welding correctness and the welding quality of all components and parts in the scrutiny circuit confirm that the welding of this circuit can enter circuit debugging after errorless;
After connecting the 5V dc source, the descending slow adjustment of the resistance of potentiometer RP till red light emitting diodes LED extinguishes, approaches any end of visiting inductive probe L magnetic core with human body then, and at this moment red light emitting diodes LED will be lighted;
The inductive probe L of control circuit of automatic door requires away from more than the circuit board element 55mm, and circuit can not use metal shell, and manages to use nonmetals that inductive probe L is fixed;
Adjust the sensitivity that potentiometer RP can change inductive probe L, the equal cisco unity malfunction of the excessive or too small circuit of the resistance of potentiometer RP, if the resistance of potentiometer RP is adjusted correctly, the detection range of inductive probe L can be greater than 2.2m.
Claims (1)
1. control circuit of automatic door, it comprises 5V dc source, bikini electric capacity oscillating circuit, rc-coupled amplification circuit, multiplication of voltage detection and filter circuit, direct current signal amplification and condition indication circuit, DC relay drive circuit, it is characterized in that:
Described bikini electric capacity oscillating circuit is by inductive probe L, oscillating capacitance C1, oscillating capacitance C2, capacitor C 3, NPN type triode BG1, biasing resistor R1, potentiometer RP and resistance R 2 are formed, oscillating capacitance C1 and an end that meets potentiometer RP after oscillating capacitance C2 is connected in series, the other end of oscillating capacitance C1 and oscillating capacitance C2 connects the two ends of inductive probe L respectively, one end of the last termination capacitor C 3 of inductive probe L, the base stage of the other end of capacitor C 3 and NPN type triode BG1, one end of resistance R 1 links to each other, the anodal VCC of the colelctor electrode connection circuit of the other end of resistance R 1 and NPN type triode BG1, the emitter stage of NPN type triode BG1 connects the other end of potentiometer RP and an end of movable end and resistance R 2 thereof, the following termination circuit ground GND of the other end of resistance R 2 and inductive probe L;
Described rc-coupled amplification circuit is made up of coupling capacitance C4, NPN type triode BG2, biasing resistor R3 and load resistance R4, the emitter stage of the termination NPN type triode BG1 of coupling capacitance C4, the base stage of another termination NPN type triode BG2 of coupling capacitance C4 and the end of biasing resistor R3, the anodal VCC of the other end connection circuit of biasing resistor R3, the colelctor electrode of NPN type triode BG2 connects the end of load resistance R4, the anodal VCC of the other end connection circuit of load resistance R4, the emitter stage connection circuit ground GND of NPN type triode BG2;
Described multiplication of voltage detection and filter circuit are made up of coupling capacitance C5, detector diode D1, detector diode D2 and filter capacitor C6, the colelctor electrode of NPN type triode BG2 connects the end of coupling capacitance C5, the negative pole of another termination detector diode D1 of coupling capacitance C5 and the positive pole of detector diode D2, the negative pole of detector diode D2 meets the base stage of positive pole and the NPN type triode BG3 of filter capacitor C6, the negative pole connection circuit ground GND of the positive pole of detector diode D1 and filter capacitor C6;
Described DC relay drive circuit is made up of NPN type triode BG4, DC relay J and protection diode D3, the base stage of NPN type triode BG4 connects the colelctor electrode of NPN type triode BG3, the colelctor electrode of NPN type triode BG4 connect DC relay J coil an end and and the positive pole of protection diode D3, the other end of DC relay J coil and and the anodal VCC of negative pole connection circuit of protection diode D3, the emitter stage connection circuit ground GND of NPN type triode BG4;
Described direct current signal amplifies and condition indication circuit is made up of NPN type triode BG3, red light emitting diodes LED and dropping resistor R5, the base stage of NPN type triode BG3 connects the negative pole of detector diode D2, the colelctor electrode of NPN type triode BG3 connects the negative pole of red light emitting diodes LED, the end of the anodal connecting resistance R5 of red light emitting diodes LED, the anodal VCC of the other end connection circuit of resistance R 5, the emitter stage connection circuit ground GND of NPN type triode BG3;
The positive pole of described 5V dc source links to each other with circuit anode VCC, and the negative pole of 5V dc source and circuit ground GND join.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201551676U CN203213797U (en) | 2013-04-01 | 2013-04-01 | Automatic door control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201551676U CN203213797U (en) | 2013-04-01 | 2013-04-01 | Automatic door control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203213797U true CN203213797U (en) | 2013-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201551676U Expired - Fee Related CN203213797U (en) | 2013-04-01 | 2013-04-01 | Automatic door control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203213797U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147657A (en) * | 2013-04-01 | 2013-06-12 | 周玉林 | Automatic door control circuit |
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2013
- 2013-04-01 CN CN2013201551676U patent/CN203213797U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147657A (en) * | 2013-04-01 | 2013-06-12 | 周玉林 | Automatic door control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20140401 |