CN207198328U - A kind of infrared distance sensing device - Google Patents
A kind of infrared distance sensing device Download PDFInfo
- Publication number
- CN207198328U CN207198328U CN201720964701.6U CN201720964701U CN207198328U CN 207198328 U CN207198328 U CN 207198328U CN 201720964701 U CN201720964701 U CN 201720964701U CN 207198328 U CN207198328 U CN 207198328U
- Authority
- CN
- China
- Prior art keywords
- infrared
- resistance
- resistor
- circuit
- control chip
- 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.)
- Active
Links
Landscapes
- Optical Radar Systems And Details Thereof (AREA)
- Measurement Of Optical Distance (AREA)
Abstract
The utility model discloses a kind of infrared distance sensing device, including infrared transmitting circuit, infrared receiving circuit and singlechip control chip, the infrared receiving circuit is used for the signal for receiving infrared transmitting circuit, and the infrared transmitting circuit, infrared receiving circuit are connected with singlechip control chip；The infrared transmitting circuit includes first resistor R1, infrared-emitting diode LED1, triode Q1, second resistance R2 and 3rd resistor R3；The infrared receiving circuit includes infrared receiving module IC1, electric capacity C1, the 4th resistance R4 and the 5th resistance R5；The signal that the transmitting terminal IR TX of the singlechip control chip are sent is the binary signal of 38KHz carrier frequencies modulation.The utility model has the advantages that circuit is simple, easy for installation, cost is cheap, stable performance, distance of reaction are remote, strong interference immunity.
Description
Technical field
Induction device field is the utility model is related to, in particular to a kind of infrared distance sensing device.
Background technology
Infrared distance sensing device is a kind of device measured using infrared reflection principle to obstacle distance.When
It is preceding, it is necessary to inductor be installed in doorway main frame, for close to inductor, distance of reaction to require 0.5m~1.5m as human body.It is existing
The application scheme for having human body sensing or object to sense mainly has following several：1. using pyroelectric infrared sensor part (PIR) with
Fresnel Lenses is combined into inductor, then is controlled by special integrated circuit.This scheme has the disadvantage that:(1) circuit is complicated,
Need special integrated circuit, hardware cost height；(2) Fresnel Lenses volume is big, need to expose to casing during assembling, influence outward appearance and dress
With technique, it is unfavorable for waterproofing design, and Fresnel Lenses material is thiner, explosive-proof grade is low, is not suitable for outdoor doorway machine
Using；(3) pyroelectric sensing device senses suitable for mobile object, poor to the human body sensing effect under inactive state.2. using special
Infrared emission, integrated chip is received, the infrared distance-sensor commonly used such as smart mobile phone.This scheme advantage is anti-
Interference performance is strong, small volume, but price is high；In the market such distance-sensor integrated chip distance of reaction generally compared with
It is short, the largest of about 0.5m or so, the design requirement that project is adjusted the distance can not be met.3. using infrared emission, receive to form pipe and feel
Answer device.The advantages of this scheme is that circuit is simple, and cost is cheap；But poor anti jamming capability, easily influenceed by ambient light, particularly existed
Easy false triggering under sunlight environment.
Utility model content
Provided by the utility model is a kind of infrared distance sensing device, and its main purpose is to overcome existing technology to deposit
Above mentioned problem.
The utility model, which adopts the following technical scheme that, to be achieved：
A kind of infrared distance sensing device, including infrared transmitting circuit, infrared receiving circuit and singlechip control chip,
The infrared receiving circuit is used to receiving the signal of infrared transmitting circuit, the infrared transmitting circuit, infrared receiving circuit with
Singlechip control chip connects；The infrared transmitting circuit includes first resistor R1, infrared-emitting diode LED1, triode
Q1, second resistance R2 and 3rd resistor R3, one end of the first resistor R1 are connected with power supply, and first resistor R1's is another
End is connected with infrared-emitting diode LED1 positive pole, infrared-emitting diode LED1 negative pole and triode Q1 colelctor electrode
Connection, triode Q1 base stage are connected with 3rd resistor R3 one end, and triode Q1 emitter stage is connected with earth terminal, institute
The other end for stating 3rd resistor R3 is connected with earth terminal, and one end of the second resistance R2 is connected with 3rd resistor R3 one end,
The transmitting terminal IR-TX connections of the second resistance R2 other end and singlechip control chip；The infrared receiving circuit includes red
Outer reception module I C1, electric capacity C1, the 4th resistance R4 and the 5th resistance R5, the positive pole and infrared receiving module of the electric capacity C1
IC1 power end connection, electric capacity C1 negative pole are connected with infrared receiving module IC1 earth terminal, the 4th resistance R4's
One end is connected with electric capacity C1 positive pole, and the 4th resistance R4 other end and the 5th resistance R5 one end are connected with power supply, should
The receiving terminal IR-RX connections of 5th resistance the R5 other end and singlechip control chip；The transmitting of the singlechip control chip
The signal for holding IR-TX to send is the binary signal of 38KHz carrier frequencies modulation.
Further, the wavelength of the infrared-emitting diode LED1 is 940nm.
Further, the infrared-emitting diode LED1 with infrared receiving module IC1 is left and right is symmetrical arranged.
From above-mentioned to description of the present utility model, compared to the prior art, the utility model has the following advantages that：
1st, the utility model uses receiving devices of the infrared receiving module IC1 as infrared light, by infrared emission during use
Diode (LED) 1, infrared receiving module IC1 are installed on same plane, form distance-sensor, can be by changing the big of R1 resistances
It is small to adjust the transmission power of infrared-emitting diode to reach the far and near regulation of distance of reaction, distance of reaction of the present utility model
Up to more than 5m.The infrared receiving module IC1 is remote control infrared receiving module, because having collected inside this infrared receiving module
Into a series of signal processing functions such as detector diode, signal amplification, amplitude limit, bandpass filtering, detection, integration, comparison circuits,
Plug-in several Resistor-Capacitor Units are only needed during use, have application circuit is simple, and stable performance, distance of reaction be remote, it is anti-interference and
The features such as strong environmental adaptability, worked in the environment of having sunray suitable for outdoor.
2nd, because solar spectrum is relatively abundanter, according to simple infrared emission, the mode received, applied under outdoor environment
When will be caused by the interference of sunray by mistake induction.It is natural light in view of the infrared light in sunshine, it is this
The intensity of light, frequency accidental.Therefore, the design is modulated using 38KHz frequencies as carrier signal to binary signal
After retransmit, receiving terminal select infrared receiving module, be internally integrated bandwidth-limited circuit etc., reception signal put
Greatly, amplitude limit, shaping, filtering etc. are handled, so as to accurately restore the binary signal of transmitting terminal；For in environment other are dry
Disturb light then to be filtered out by infrared receiving module, avoid and disturbed by environment.
3rd, to prevent normal remote control etc., other can send the infrared light emission equipment of 38KHz carrier signals to inductor
Interference, the design is used as control chip using programmable single-chip microcomputer, during application, passes through and carries out spy to the binary signal of transmission
Delimit the organizational structure and send again after code, receive the signal terminated to and be compared again with sending signal after decoding, only send, receive letter
When number consistent, just it is determined as it being actual induction.
Brief description of the drawings
Fig. 1 is theory diagram of the present utility model.
Fig. 2 is the circuit diagram of the utility model infrared transmitting circuit and infrared receiving circuit.
Fig. 3 is the scheme of installation of the utility model infrared-emitting diode and infrared receiving module.
Embodiment
Referring to Figures 1 and 2.A kind of infrared distance sensing device, including infrared transmitting circuit 1, infrared receiving circuit 2 and
Singlechip control chip 3, the infrared receiving circuit 2 are used for the signal for receiving infrared transmitting circuit 1, the infrared transmitting circuit
1st, infrared receiving circuit 2 is connected with singlechip control chip 3.The infrared transmitting circuit 1 includes first resistor R1, infrared hair
The one end and power supply for penetrating diode (LED) 1, triode Q1, second resistance R2 and 3rd resistor R3, the first resistor R1 connect
Connect, the first resistor R1 other end is connected with infrared-emitting diode LED1 positive pole, infrared-emitting diode LED1's
Negative pole is connected with triode Q1 colelctor electrode, and triode Q1 base stage is connected with 3rd resistor R3 one end, triode Q1
Emitter stage be connected with earth terminal, the other end of the 3rd resistor R3 is connected with earth terminal, one end of the second resistance R2
It is connected with 3rd resistor R3 one end, the transmitting terminal IR-TX connections of the second resistance R2 other end and singlechip control chip.
Referring to Figures 1 and 2.The infrared receiving circuit 2 include infrared receiving module IC1, electric capacity C1, the 4th resistance R4 with
And the 5th resistance R5, the positive pole of the electric capacity C1 are connected with infrared receiving module IC1 power end, electric capacity C1 negative pole with it is red
The outer earth terminal connection for receiving module I C1, one end of the 4th resistance R4 are connected with electric capacity C1 positive pole, the 4th resistance R4
The other end and the 5th resistance R5 one end be connected with power supply, the 5th resistance R5 other end and singlechip control chip
Receiving terminal IR-RX connections.The signal that the transmitting terminal IR-TX of the singlechip control chip 3 is sent is modulated for 38KHz carrier frequencies
Binary signal, the wavelength of the infrared-emitting diode LED1 is 940nm.
Reference picture 3.The utility model is when mounted, it is desirable to which infrared-emitting diode LED1, infrared receiving module IC1 are installed
In casing the same face, ensure that the front object that infrared-emitting diode LED1 transmitting light can be induced in the range of distance d is anti-
Penetrate and infrared receiving module IC1 is received.To prevent infrared light from reflexing to infrared receiving module IC1 in casing internal, in casing
Infrared-emitting diode LED1 and infrared receiving module IC1 need to be passed through optically isolated processing by portion, such as use casing plastic section subpackage
Firmly infrared-emitting diode.
Referring to Figures 1 and 2.Circuit theory of the present utility model is as follows：Transmitting terminal IR-TX, receiving terminal IR-RX are coupled with
Singlechip control chip 3, the transmitting terminal IR-TX of singlechip control chip 3 sends one group and modulated through 38KHz carrier frequencies during work
Binary signal, the signal light on and off that now infrared-emitting diode LED1 is sent with this group of transmitting terminal IR-TX change.Work as hair
End IR-TX is penetrated when be high level, triode Q1 is turned on, and LED1 is bright；When transmitting terminal IR-TX is low level, triode Q1 cut-offs,
LED1 goes out.When infrared receiver module I C1 receives the infrared signal that LED1 is sent, at the signals such as inside modules demodulation
Reason, after restoring the binary signal before modulation, singlechip control chip 3, single-chip microcomputer control core are inputted by receiving terminal IR-RX
Judgement is identified in piece 3 after reception signal, and corresponding function control is then performed if useful signal.
Specific embodiment of the present utility model is above are only, but design concept of the present utility model is not limited thereto,
All changes for carrying out unsubstantiality to the utility model using this design, all should belong to the row for invading scope of protection of the utility model
For.
Claims (3)
- A kind of 1. infrared distance sensing device, it is characterised in that：Including infrared transmitting circuit, infrared receiving circuit and single-chip microcomputer Control chip, the infrared receiving circuit are used for the signal for receiving infrared transmitting circuit, the infrared transmitting circuit, infrared receiver Circuit is connected with singlechip control chip；The infrared transmitting circuit include first resistor R1, infrared-emitting diode LED1, Triode Q1, second resistance R2 and 3rd resistor R3, one end of the first resistor R1 are connected with power supply, first resistor R1 The other end be connected with infrared-emitting diode LED1 positive pole, infrared-emitting diode LED1 negative pole is with triode Q1's Colelctor electrode is connected, and triode Q1 base stage is connected with 3rd resistor R3 one end, the triode Q1 emitter stage and earth terminal Connection, the other end of the 3rd resistor R3 are connected with earth terminal, one end of the second resistance R2 and the one of 3rd resistor R3 End connection, the transmitting terminal IR-TX connections of the second resistance R2 other end and singlechip control chip；The infrared receiving circuit Including infrared receiving module IC1, electric capacity C1, the 4th resistance R4 and the 5th resistance R5, the positive pole of the electric capacity C1 connects with infrared Module I C1 power end connection is received, electric capacity C1 negative pole is connected with infrared receiving module IC1 earth terminal, the 4th electricity Resistance R4 one end is connected with electric capacity C1 positive pole, and the 4th resistance R4 other end and the 5th resistance R5 one end connect with power supply Connect, the receiving terminal IR-RX connections of the 5th resistance the R5 other end and singlechip control chip；The singlechip control chip The signal that transmitting terminal IR-TX is sent is the binary signal of 38KHz carrier frequencies modulation.
- A kind of 2. infrared distance sensing device as claimed in claim 1, it is characterised in that：The infrared-emitting diode LED1 Wavelength be 940nm.
- A kind of 3. infrared distance sensing device as claimed in claim 1, it is characterised in that：The infrared-emitting diode LED1 With infrared receiving module IC1 is left and right is symmetrical arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720964701.6U CN207198328U (en) | 2017-08-03 | 2017-08-03 | A kind of infrared distance sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720964701.6U CN207198328U (en) | 2017-08-03 | 2017-08-03 | A kind of infrared distance sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207198328U true CN207198328U (en) | 2018-04-06 |
Family
ID=61796468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720964701.6U Active CN207198328U (en) | 2017-08-03 | 2017-08-03 | A kind of infrared distance sensing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207198328U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109725582A (en) * | 2019-01-25 | 2019-05-07 | 南京品畅科技发展有限公司 | A kind of circuit and method of the control infrared induction distance based on digital regulation resistance |
| CN111207782A (en) * | 2020-01-06 | 2020-05-29 | 厦门狄耐克智能科技股份有限公司 | Environment self-adaption method based on infrared distance induction device |
| WO2023206728A1 (en) * | 2022-04-27 | 2023-11-02 | 漳州松霖智能家居有限公司 | Infrared sensor and infrared sensing window |
-
2017
- 2017-08-03 CN CN201720964701.6U patent/CN207198328U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109725582A (en) * | 2019-01-25 | 2019-05-07 | 南京品畅科技发展有限公司 | A kind of circuit and method of the control infrared induction distance based on digital regulation resistance |
| CN111207782A (en) * | 2020-01-06 | 2020-05-29 | 厦门狄耐克智能科技股份有限公司 | Environment self-adaption method based on infrared distance induction device |
| WO2023206728A1 (en) * | 2022-04-27 | 2023-11-02 | 漳州松霖智能家居有限公司 | Infrared sensor and infrared sensing window |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207198328U (en) | A kind of infrared distance sensing device | |
| CN103365280B (en) | Smart Home complex control system and control method | |
| CN204654547U (en) | Long-distance Control blind system | |
| CN203397176U (en) | Household electric appliance remote control and environment monitoring system based on intelligent mobile phone | |
| US9307620B2 (en) | Data relay for a controller | |
| CN107134696A (en) | A kind of WiFi smart jacks with human body sensing | |
| CN104902650B (en) | Solar intelligent induction street lamp controller | |
| CN203135915U (en) | Intelligent household gateway | |
| CN203872394U (en) | Light control apparatus based on Zigbee networking and human body infrared induction technology | |
| CN204288409U (en) | A kind of burglar alarm | |
| CN107885112B (en) | Automatic response cell-phone presss from both sides | |
| CN203858466U (en) | Device for displaying and hiding backlight touch button through infrared induction | |
| CN204877227U (en) | Multi -functional intelligent (window) curtain | |
| CN209994359U (en) | Sound control switch of low-voltage component | |
| CN203673599U (en) | Multi-channel infrared monitoring wireless alarm system | |
| CN206236257U (en) | A kind of Intelligent remote control switch | |
| CN106325175A (en) | Micro-disk control system based on infrared wireless transmission | |
| CN203480261U (en) | Intelligent household infrared remote control switch | |
| CN211860054U (en) | Infrared detection circuit of intelligence house | |
| CN201879410U (en) | Mailbox device with wireless reminding function | |
| CN110087027A (en) | Novel safety defense monitoring system | |
| CN206388052U (en) | A kind of intelligence control system of furniture | |
| CN202472323U (en) | Infrared control device for automatic door | |
| CN206362950U (en) | A kind of new type reflection infrared sensor | |
| CN201059997Y (en) | Human body infrared detection control circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |