CN216901576U - Gesture sensing circuit - Google Patents
Gesture sensing circuit Download PDFInfo
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- CN216901576U CN216901576U CN202220373248.2U CN202220373248U CN216901576U CN 216901576 U CN216901576 U CN 216901576U CN 202220373248 U CN202220373248 U CN 202220373248U CN 216901576 U CN216901576 U CN 216901576U
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Abstract
The utility model relates to the technical field of gesture induction, in particular to a gesture induction circuit, which comprises: the infrared induction system comprises a single chip microcomputer and two paths of infrared induction modules which are respectively connected with the single chip microcomputer; the infrared induction module comprises an infrared receiving module and an infrared transmitting module; the infrared receiving module comprises a first receiving resistor, one end of the first receiving resistor is connected with a power supply end, the other end of the first receiving resistor is respectively connected with a second receiving resistor and a third receiving resistor, the other end of the second receiving resistor is connected with an AD detection port of the single chip microcomputer, and the other end of the third receiving resistor is connected with a cathode of a first infrared receiving diode; the infrared emission module comprises a first infrared emission diode, one end of a first infrared emission resistor is connected with a power supply end, the other end of the first infrared emission resistor is connected with the anode of the first infrared emission diode, and the cathode of the first infrared emission diode is connected with an IO port of the single chip microcomputer; the utility model can perform gesture detection with low cost and high reliability.
Description
Technical Field
The utility model relates to the technical field of gesture induction, in particular to a gesture induction circuit.
Background
Most of the existing gesture sensing circuits adopt a combination mode of an infrared emitting diode and an infrared integrated amplification receiving tube, and the combination mode has the disadvantages of high cost, difficulty in sensing distance control, poor directivity and the like.
Therefore, there is a need for an improved gesture sensing circuit to overcome the above problems.
SUMMERY OF THE UTILITY MODEL
To solve the above problems, the present invention provides a gesture sensing circuit to solve one or more technical problems in the prior art, and at least provide a useful choice or creation condition.
In order to achieve the purpose, the utility model provides the following technical scheme:
a gesture sensing circuit, comprising:
the infrared induction system comprises a single chip microcomputer and two paths of infrared induction modules which are respectively connected with the single chip microcomputer;
the infrared induction module comprises an infrared receiving module and an infrared transmitting module;
the infrared receiving module comprises a first infrared receiving diode, a first receiving resistor, a second receiving resistor and a third receiving resistor, one end of the first receiving resistor is connected with a power supply end, the other end of the first receiving resistor is respectively connected with the second receiving resistor and the third receiving resistor, the other end of the second receiving resistor is connected with an AD detection port of the single chip microcomputer, and the other end of the third receiving resistor is connected with a cathode of the first infrared receiving diode;
the infrared emission module comprises a first infrared emission diode and a first infrared emission resistor, one end of the first infrared emission resistor is connected with the power supply end, the other end of the first infrared emission resistor is connected with the anode of the first infrared emission diode, and the cathode of the first infrared emission diode is connected with the IO port of the single chip microcomputer.
Further, the infrared signal emitted by the first infrared emitting diode is a pulse signal, the frequency of the pulse signal is 166Hz, and the duty ratio of the pulse signal is 1/6.
Further, the resistance of the first receiving resistor is 100k Ω, the resistance of the second receiving resistor is 22k Ω, and the resistance of the third receiving resistor is 1k Ω.
Further, the resistance value of the first infrared emission resistor is 330 Ω.
Further, the voltage of the power supply end is direct current 5V.
The beneficial effects of the utility model are:
the cost is reduced by using the combination of the infrared emitting diode and the infrared receiving diode, meanwhile, the emitting mode of the emitting tube is designed through software, so that the infrared emission has better directivity, a data acquisition algorithm is designed, the sampling is efficient and accurate, and the gesture sensing distance and the sensing speed can be flexibly adjusted. The method has the advantages of low cost and high reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a circuit connection block diagram of a gesture sensing circuit according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present application, if words such as "a number" are used, they mean one or more, and the meaning of a plurality is two or more, and more than, less than, more than, etc. are understood as excluding the number, and more than, less than, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated. In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.
Referring to fig. 1, an embodiment of the present invention provides a gesture sensing circuit, including: the infrared induction system comprises a single chip microcomputer 100 and two infrared induction modules 200 respectively connected with the single chip microcomputer 100;
the infrared sensing module 200 includes an infrared receiving module 210 and an infrared emitting module 220;
the infrared receiving module 210 comprises a first infrared receiving diode IR1, a first receiving resistor R11, a second receiving resistor R12 and a third receiving resistor R13, wherein one end of the first receiving resistor R11 is connected to a power supply end, and the other end of the first receiving resistor R11 is respectively connected to a second receiving resistor R12 and a third receiving resistor R13, the other end of the second receiving resistor R12 is connected to an AD detection port AD _ IR1 of the single chip microcomputer 100, and the other end of the third receiving resistor R13 is connected to a cathode of the first infrared receiving diode IR 1;
the infrared emitting module 220 comprises a first infrared emitting diode IR _ LED1 and a first infrared emitting resistor R14, one end of the first infrared emitting resistor R14 is connected with a power supply end, the other end of the first infrared emitting resistor R14 is connected with the anode of the first infrared emitting diode IR _ LED1, and the cathode of the first infrared emitting diode IR _ LED1 is connected with the IO port of the single chip microcomputer 100.
As a modification of the above embodiment, the infrared signal emitted by the first infrared emitting diode IR _ LED1 is a pulse signal, and the frequency of the pulse signal is 166Hz and the duty ratio is 1/6.
As a modification of the above embodiment, the resistance value of the first receiving resistor R11 is 100k Ω, the resistance value of the second receiving resistor R12 is 22k Ω, and the resistance value of the third receiving resistor R13 is 1k Ω.
As a modification of the above embodiment, the first infrared emission resistor R14 has a resistance value of 330 Ω.
As a modification of the above embodiment, the voltage of the power supply terminal is dc 5V.
The working principle of the application is as follows:
in operation, the single chip microcomputer 100 controls the first infrared emitting diode IR _ LED1 to send a pulse signal with a duty ratio 1/6 at a frequency of 166Hz, wherein the frequency has very good directivity. Meanwhile, the single chip microcomputer 100 transmits and receives the two infrared sensing modules 200 in a staggered time-sharing manner, so that mutual interference of data can be avoided, and independent data acquisition is achieved. If the two infrared receiving modules 210 collect effective infrared signals, determining that a gesture action exists, and determining the gesture sensing direction and sensitivity according to the infrared receiving modules 210 collecting the infrared signals and the collecting time.
To sum up, compared with the existing gesture sensing circuit and method, the embodiment provided by the application has the following advantages:
1. by adopting an infrared transmitting mode with low frequency and low duty ratio, infrared transmission and induction with good directivity can be realized.
2. And the reliability of the product is improved by time-sharing sending and sampling.
3. And the gesture sensing distance and the sensitivity can be controllably adjusted by an AD sampling mode.
While the present disclosure has been described in considerable detail and with particular reference to a few illustrative embodiments thereof, it is not intended to be limited to any such details or embodiments or any particular embodiments, but it is to be construed with references to the appended claims so as to provide a broad, potential interpretation of such claims in view of the prior art and, therefore, to effectively encompass the intended scope of the disclosure. Furthermore, the foregoing describes the utility model in terms of embodiments foreseen by the inventor for which an enabling description was available, notwithstanding that insubstantial modifications of the utility model, not presently foreseen, may nonetheless represent equivalents thereto.
Claims (5)
1. A gesture sensing circuit, comprising:
the infrared induction system comprises a single chip microcomputer and two paths of infrared induction modules which are respectively connected with the single chip microcomputer;
the infrared induction module comprises an infrared receiving module and an infrared transmitting module;
the infrared receiving module comprises a first infrared receiving diode, a first receiving resistor, a second receiving resistor and a third receiving resistor, one end of the first receiving resistor is connected with a power supply end, the other end of the first receiving resistor is respectively connected with the second receiving resistor and the third receiving resistor, the other end of the second receiving resistor is connected with an AD detection port of the single chip microcomputer, and the other end of the third receiving resistor is connected with a cathode of the first infrared receiving diode;
the infrared emission module comprises a first infrared emission diode and a first infrared emission resistor, one end of the first infrared emission resistor is connected with the power supply end, the other end of the first infrared emission resistor is connected with the anode of the first infrared emission diode, and the cathode of the first infrared emission diode is connected with the IO port of the single chip microcomputer.
2. The gesture sensing circuit according to claim 1, wherein the infrared signal emitted by the first infrared emitting diode is a pulse signal, the frequency of the pulse signal is 166Hz, and the duty cycle of the pulse signal is 1/6.
3. The gesture sensing circuit according to claim 1, wherein the first receiving resistor has a resistance of 100k Ω, the second receiving resistor has a resistance of 22k Ω, and the third receiving resistor has a resistance of 1k Ω.
4. The gesture sensing circuit according to claim 3, wherein the first infrared emitting resistor has a resistance of 330 Ω.
5. The gesture sensing circuit according to claim 1, wherein the voltage of the power supply terminal is 5V DC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220373248.2U CN216901576U (en) | 2022-02-21 | 2022-02-21 | Gesture sensing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220373248.2U CN216901576U (en) | 2022-02-21 | 2022-02-21 | Gesture sensing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216901576U true CN216901576U (en) | 2022-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220373248.2U Active CN216901576U (en) | 2022-02-21 | 2022-02-21 | Gesture sensing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216901576U (en) |
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2022
- 2022-02-21 CN CN202220373248.2U patent/CN216901576U/en active Active
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