CN219122410U - Distance detection switch circuit for preventing television from being watched in short distance - Google Patents
Distance detection switch circuit for preventing television from being watched in short distance Download PDFInfo
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- CN219122410U CN219122410U CN202222894619.4U CN202222894619U CN219122410U CN 219122410 U CN219122410 U CN 219122410U CN 202222894619 U CN202222894619 U CN 202222894619U CN 219122410 U CN219122410 U CN 219122410U
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Abstract
The utility model discloses a distance detection switch circuit for preventing a television from being watched in a short distance, which relates to the technical field of electronic circuits and comprises an infrared receiving module, a first switch circuit and a second switch circuit, wherein the infrared receiving module is used for receiving infrared signals; the signal conditioning module is used for conditioning signals; the timing control module is used for transmitting timing control signals; the warning degree control module is used for judging the distance between the child and the television through three comparators; and the alarm switch control module is used for controlling the alarm degree of the alarm circuit according to three different detection distances. The distance detection switch circuit for preventing the television from being watched in a short distance amplifies the infrared signals reflected by the obstacle, three distance judgments of the obstacle and the television are realized, different warning effects are realized according to the three distance degrees, and the timing control module avoids frequent warning caused by frequent and short stay of the obstacle in the infrared range.
Description
Technical Field
The utility model relates to the technical field of electronic circuits, in particular to a distance detection switch circuit for preventing a television from being watched in a short distance.
Background
Along with improvement of living standard of people and popularization of market television sets, in order to attract attention of people, program contents of the television sets are also richer, the program contents comprise child education, cartoon, entertainment programs and the like, the program contents are deeply loved by children, but due to poor self-awareness of the children, the children are liked to watch in close range when watching television, parents are required to remind frequently, a device for preventing the children from watching television in close range by adopting an infrared distance sensor appears on the market, a warning close to the television sets can be sent out as long as the children appear in an infrared detection range, but the children cannot be effectively warned to be far away from the television sets only through a single warning mode, and warning can be triggered when people frequently pass through the infrared detection range, so that false alarm occurs.
Disclosure of Invention
The embodiment of the utility model provides a distance detection switch circuit for preventing a television from being watched in a short distance, which aims to solve the problems in the background technology.
According to an embodiment of the present utility model, there is provided a distance detection switch circuit for preventing a television from being watched at a near distance, the distance detection switch circuit comprising: the system comprises a power supply module, an infrared receiving module, a signal conditioning module, a timing control module, a warning degree control module and an alarm switch control module;
the power supply module is used for providing the required working electric energy for the device;
the infrared receiving module is connected with the power module and is used for receiving infrared signals reflected by the obstacle;
the signal conditioning module is connected with the power supply module and the infrared receiving module and is used for amplifying the infrared signals received by the infrared receiving module;
the timing control module is connected with the power supply module and the signal conditioning module and is used for receiving the signals amplified by the signal conditioning module and controlling the timing circuit to transmit the signals amplified by the signal conditioning module to the warning degree control module at regular time;
the warning degree control module is connected with the signal conditioning module and the timing control module, and is used for receiving the signals amplified by the signal conditioning module, judging different distances according to the three groups of comparison circuits, and outputting a first warning signal, a second warning signal and a third warning signal according to the distance degree of the distances;
the alarm switch control module is connected with the alarm degree control module and is used for receiving the first alarm signal, the second alarm signal and the third alarm signal and giving three kinds of alarm with different degrees.
Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the infrared receiving module of the distance detection switch circuit for preventing the television from being watched in a short distance receives the infrared signals reflected by the obstacles so as to detect the distance of the obstacles in a range, the signal conditioning module amplifies the reflected infrared signals, the detection control precision is improved, the alarm control of three different degrees is realized according to the distance degree by the alarm degree control module, the child is warned in different degrees, and meanwhile, the frequent alarm caused by frequent and short stay of the obstacles in the infrared range is avoided by the timing control module, so that the experience effect of the device is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments of the present utility model will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic block diagram of a distance detection switch circuit for preventing television from being watched in a short distance according to an embodiment of the present utility model.
Fig. 2 is a circuit diagram of a distance detection switch circuit for preventing television from being watched in a short distance according to an embodiment of the present utility model.
Fig. 3 is a circuit diagram of a timing control module provided by an example of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Embodiment 1 referring to fig. 1, a distance detection switch circuit for preventing television from being watched in a short distance includes: the system comprises a power supply module 1, an infrared receiving module 2, a signal conditioning module 3, a timing control module 4, a warning degree control module 5 and a warning switch control module 6;
specifically, the power module 1 is configured to provide the required operating power for the device;
the infrared receiving module 2 is connected with the power module 1 and is used for receiving infrared signals reflected by obstacles;
the signal conditioning module 3 is connected with the power supply module 1 and the infrared receiving module 2 and is used for amplifying the infrared signals received by the infrared receiving module 2;
the timing control module 4 is connected with the power supply module 1 and the signal conditioning module 3 and is used for receiving the signal amplified by the signal conditioning module 3 and controlling a timing circuit to transmit the signal amplified by the signal conditioning module 3 to the warning degree control module 5 at regular time;
the warning degree control module 5 is connected with the signal conditioning module 3 and the timing control module 4, and is used for receiving the signals amplified by the signal conditioning module 3, judging different distances according to three groups of comparison circuits, and outputting a first warning signal, a second warning signal and a third warning signal according to the distance degree of the distances;
and the alarm switch control module 6 is connected with the alarm degree control module 5 and is used for receiving the first alarm signal, the second alarm signal and the third alarm signal and giving three kinds of alarms with different degrees.
In a specific embodiment, the power module 1 may use a DC power supply and a DC-DC voltage regulation circuit to provide a required DC voltage for the device, and a specific power supply manner is not described in detail; the infrared receiving module 2 can adopt an infrared receiving circuit to receive infrared signals reflected by the barrier; the signal conditioning module 3 can amplify the input infrared signal by adopting a signal amplifying circuit; the timing control module 4 can adopt a triode control circuit and a timing switch circuit, the triode control circuit controls the timing switch circuit to work, and the timing switch circuit controls the timing transmission of the signal amplified by the signal conditioning module 3; the warning degree control module 5 can adopt three groups of comparison circuits, and compares the input signals with three set distance thresholds so as to judge the distance between the child and the television; the alarm switch control module 6 can complete the alarm of different distances by adopting three alarm modes with different degrees.
In embodiment 2, referring to fig. 2 and 3 on the basis of embodiment 1, the infrared receiving module 2 includes a first resistor R1, an infrared receiving tube U1, a first capacitor C1 and a fourth resistor R4;
specifically, one end of the first resistor R1 is connected to the power module 1, the other end of the first resistor R1 is connected to the cathode of the infrared receiving tube U1 and is connected to the first end of the fourth resistor R4 through the first capacitor C1, and the second end of the fourth resistor R4 is connected to the signal conditioning module 3.
In a specific embodiment, the infrared receiving tube U1 is optional, but not limited to the PD204-6B receiving tube, receives the infrared signal reflected by the obstacle, and outputs different current values according to the infrared signal reflected by different positions.
It should be noted that, the infrared signal reflected by the obstacle is emitted by an infrared emission tube (not shown in the figure), and the NE555 device can be used to generate pulse wave control, which is not described in detail.
Further, the signal conditioning module 3 includes a second resistor R2, a third resistor R3, a first OP1, a sixth resistor R6, a fifth resistor R5, a first potentiometer RP1, a second capacitor C2, a third capacitor C3, a seventh resistor R7, a first diode D1, a second diode D2, and a fourth capacitor C4;
specifically, one end of the second resistor R2 and the first end of the fifth resistor R5 are both connected to the power module 1, the other end of the second resistor R2 is connected to the in-phase end of the first operational amplifier OP1 and is connected to the ground end through the third resistor R3, the inverting end of the first operational amplifier OP1 is connected to the second end of the fourth resistor R4 and one end of the second capacitor C2 and is connected to one end of the first potentiometer RP1 through the sixth resistor R6, the other end of the second capacitor C2, the other end of the first capacitor RP1 and the sliding sheet end are both connected to the output end of the first operational amplifier OP1 and are connected to one end of the seventh resistor R7 and to the anode of the second diode D2 through the third capacitor C3, the other end of the seventh resistor R7 is connected to the second end of the fifth resistor R5 and to the anode of the first diode D1, the cathode of the first diode D1 and one end of the fourth capacitor C4 are both grounded, and the other end of the fourth capacitor C4 is connected to the cathode of the second diode D2.
In a specific embodiment, the first OP1 may be an LM324 OP amp, for amplifying an input infrared signal; the seventh resistor R7, the first diode D1, the second diode D2, and the fourth capacitor C4 perform a coupling rectifying and filtering process on the amplified signal, so as to be received by a subsequent circuit.
Further, the timing control module 4 includes a fourth switching tube VT4, a fifteenth resistor R15, a fifth capacitor C5, a third diode VT3, a sixteenth resistor R16, a timer U3, a fourteenth resistor R14, and a first analog switch U2;
specifically, one end of the fifteenth resistor R15 is connected to the cathode of the second diode D2, the other end of the fifteenth resistor R15 is connected to the base of the fourth switch tube VT4, the collector of the fourth switch tube VT4 is connected to the power module 1, the emitter of the fourth switch tube VT4 is connected to the fourth end and the eighth end of the timer U3 and is connected to one end of the sixteenth resistor R16, the cathode of the third diode VT3, the sixth end and the second end of the timer U3 through the fifth capacitor C5, the first end of the timer U3, the other end of the sixteenth resistor R16 and the anode of the third diode VT3 are all grounded, the third end of the timer U3 is connected to the fifth end of the first analog switch U2 through the fourteenth resistor R14, and the third end and the fourth end of the first analog switch U2 are respectively connected to the cathode of the second diode D2 and the warning degree control module 5.
In a specific embodiment, the timer U3 may be an NE555 integrated circuit, and cooperates with a fifth capacitor C5, a third diode VT3, a sixteenth resistor R16, and a fourteenth resistor R14 to form a timing control circuit, so that the timer U3 is controlled to output a low level at a fixed time and then continuously output a high level; the fourth switching tube VT4 can be an NPN triode, which is used for receiving the amplified infrared signal and controlling the power supply of the timer U3; the first analog switch U2 may be a CD4066 chip.
It should be noted that "V1" and "V2" are labeled in fig. 2 and 3, respectively, and are indicated that the V1 end in fig. 2 is connected to the V1 end in fig. 3, and the V2 end in fig. 2 is connected to the V2 end in fig. 3, which is not described herein.
Further, the warning level control module 5 includes a first comparator A1, a second comparator A2, a third comparator A3, a first threshold, a second threshold, a third threshold, a first power VCC1, an eighth resistor R8, a ninth resistor R9, and a tenth resistor R10;
specifically, the in-phase end and the inverting end of the first comparator A1 are respectively connected to the cathode of the second diode D2 and the first threshold, the in-phase end of the second comparator A2 is connected to the in-phase end of the third comparator A3 and the fourth end of the first analog switch U2, the inverting end of the second comparator A2 and the inverting end of the third comparator A3 are respectively connected to the second threshold and the third threshold, the output end of the first comparator A1, the output end of the second comparator A2 and the output end of the third comparator A3 are respectively connected to one end of the eighth resistor R8, one end of the ninth resistor R9 and one end of the tenth resistor R10, and the other end of the eighth resistor R8, the other end of the ninth resistor R9 and the other end of the tenth resistor R10 are all connected to the first power VCC1.
In a specific embodiment, the first comparator A1, the second comparator A2 and the third comparator A3 may be LM393 comparators; the first threshold, the second threshold and the third threshold can be used as different distance information received by the infrared receiving module 2, and the television is used as a starting point, the first threshold is a far warning distance between the child and the television, the second threshold is a medium warning distance between the child and the television, and the third threshold is a near warning distance between the child and the motor.
Further, the alarm switch control module 6 includes an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a first switch tube VT1, a second switch tube VT2, a third switch tube VT3, and an alarm device;
one end of the eleventh resistor R11, one end of the twelfth resistor R12 and one end of the thirteenth resistor R13 are respectively connected with the output end of the first comparator, the output end of the second comparator and the output end of the third comparator, the other end of the eleventh resistor R11, the other end of the twelfth resistor R12 and the other end of the thirteenth resistor R13 are respectively connected with the base of the first switch tube VT1, the base of the second switch tube VT2 and the base of the third switch tube VT3, the emitter of the first switch tube VT1, the emitter of the second switch tube VT2 and the emitter of the third switch tube VT3 are grounded, and the collector of the first switch tube VT1, the collector of the second switch tube VT2 and the collector of the third switch tube VT3 are respectively connected with the first end, the second end and the third end of the alarm device.
In a specific embodiment, the first switching tube VT1 and the second switching tube VT2 and the third switching tube VT3 may be NPN type transistors, respectively controlling the working states of the alarm device; the alarm device can adopt, but is not limited to, three kinds of LED lamps with different brightness, three kinds of loudspeakers with different sounds and the like.
According to the distance detection switch circuit for preventing the television from being watched at a short distance, a power supply module 1 provides required electric energy for a device, an infrared receiving tube U1 receives an infrared signal reflected by an obstacle and converts the infrared signal into a current signal, the current is sequentially converted into a voltage signal through a fourth resistor R4, a first capacitor C1 and the first resistor R1, amplification processing is carried out by a first operational amplifier OP1, the amplified signal is subjected to coupling rectification filter processing by a seventh resistor R7, a first diode D1, a second diode D2 and a fourth capacitor C4, the amplified signal is transmitted to a first comparator A1, judgment of a first distance is completed through a first threshold, the first switch tube VT1 is controlled to be conducted as long as a child is detected in the range, the alarm device is controlled to slightly warn, meanwhile, the conditioned signal controls the fourth switch tube VT4 to be conducted, so that a timer U3 starts to output a low-level signal at a fixed time, at the moment, the first analog switch U2 is in a closed state until the fixed time, the amplified signal is subjected to coupling rectification filter processing by a seventh resistor R7, a first diode D1, a second diode D2 and a fourth capacitor C4, the amplified signal is subjected to a coupling rectification filter processing is carried out on the amplified signal, the amplified signal is transmitted to the first comparator A1, judgment is carried out through the first threshold, the first threshold is controlled by the first threshold is controlled to be conducted by the second comparator A2, the second comparator is controlled to be conducted by the second comparator, the second comparator is controlled to be more than the second threshold is controlled to be more frequently high, and the alarm device is controlled to be turned on by the second comparator is controlled to be turned on a low alarm is controlled to be turned on when the child.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. A distance detection switch circuit for preventing television from being watched in a short distance, characterized in that:
the distance detection switch circuit for preventing television from being watched in a short distance comprises: the system comprises a power supply module, an infrared receiving module, a signal conditioning module, a timing control module, a warning degree control module and an alarm switch control module;
the power supply module is used for providing the required working electric energy for the device;
the infrared receiving module is connected with the power module and is used for receiving infrared signals reflected by the obstacle;
the signal conditioning module is connected with the power supply module and the infrared receiving module and is used for amplifying the infrared signals received by the infrared receiving module;
the timing control module is connected with the power supply module and the signal conditioning module and is used for receiving the signals amplified by the signal conditioning module and controlling the timing circuit to transmit the signals amplified by the signal conditioning module to the warning degree control module at regular time;
the warning degree control module is connected with the signal conditioning module and the timing control module, and is used for receiving the signals amplified by the signal conditioning module, judging different distances according to the three groups of comparison circuits, and outputting a first warning signal, a second warning signal and a third warning signal according to the distance degree of the distances;
the alarm switch control module is connected with the alarm degree control module and is used for receiving the first alarm signal, the second alarm signal and the third alarm signal and giving three kinds of alarm with different degrees.
2. The distance detection switch circuit for preventing near field television viewing according to claim 1, wherein the infrared receiving module comprises a first resistor, an infrared receiving tube, a first capacitor and a fourth resistor;
one end of the first resistor is connected with the power module, the other end of the first resistor is connected with the cathode of the infrared receiving tube and is connected with the first end of the fourth resistor through the first capacitor, and the second end of the fourth resistor is connected with the signal conditioning module.
3. The circuit of claim 2, wherein the signal conditioning module comprises a second resistor, a third resistor, a first op-amp, a sixth resistor, a fifth resistor, a first potentiometer, a second capacitor, a third capacitor, a seventh resistor, a first diode, a second diode, and a fourth capacitor;
the power supply module is connected to one end of the second resistor and the first end of the fifth resistor, the other end of the second resistor is connected with the same-phase end of the first operational amplifier and the ground end through the third resistor, the opposite-phase end of the first operational amplifier is connected with the second end of the fourth resistor and one end of the second capacitor and one end of the first potentiometer is connected through the sixth resistor, the other end of the second capacitor, the other end of the first potentiometer and the sliding blade end are all connected with the output end of the first operational amplifier and one end of the seventh resistor and the anode of the second diode through the third capacitor, the other end of the seventh resistor is connected with the second end of the fifth resistor and the anode of the first diode, the cathode of the first diode and one end of the fourth capacitor are all grounded, and the other end of the fourth capacitor is connected with the cathode of the second diode.
4. A distance detection switching circuit for preventing near television viewing according to claim 3, wherein the timing control module comprises a fourth switching tube, a fifteenth resistor, a fifth capacitor, a third diode, a sixteenth resistor, a timer, a fourteenth resistor, and a first analog switch;
one end of the fifteenth resistor is connected with the cathode of the second diode, the other end of the fifteenth resistor is connected with the base electrode of the fourth switching tube, the collector electrode of the fourth switching tube is connected with the power module, the emitter electrode of the fourth switching tube is connected with the fourth end and the eighth end of the timer and is connected with one end of the sixteenth resistor, the cathode of the third diode, the sixth end and the second end of the timer through a fifth capacitor, the first end of the timer, the other end of the sixteenth resistor and the anode of the third diode are grounded, the third end of the timer is connected with the fifth end of the first analog switch through the fourteenth resistor, and the third end and the fourth end of the first analog switch are respectively connected with the cathode of the second diode and the warning degree control module.
5. The circuit of claim 4, wherein the alert level control module comprises a first comparator, a second comparator, a third comparator, a first threshold, a second threshold, a third threshold, a first power supply, an eighth resistor, a ninth resistor, and a tenth resistor;
the in-phase end and the reverse phase end of the first comparator are respectively connected with the cathode of the second diode and the first threshold value, the in-phase end of the second comparator is connected with the in-phase end of the third comparator and the fourth end of the first analog switch, the reverse phase end of the second comparator and the reverse phase end of the third comparator are respectively connected with the second threshold value and the third threshold value, the output end of the first comparator, the output end of the second comparator and the output end of the third comparator are respectively connected with one end of the eighth resistor, one end of the ninth resistor and one end of the tenth resistor, and the other end of the eighth resistor, the other end of the ninth resistor and the other end of the tenth resistor are respectively connected with the first power supply.
6. The distance detection switch circuit for preventing near television viewing according to claim 5, wherein the alarm switch control module comprises an eleventh resistor, a twelfth resistor, a thirteenth resistor, a first switch tube, a second switch tube, a third switch tube, and an alarm device;
one end of the eleventh resistor, one end of the twelfth resistor and one end of the thirteenth resistor are respectively connected with the output end of the first comparator, the output end of the second comparator and the output end of the third comparator, the other end of the eleventh resistor, the other end of the twelfth resistor and the other end of the thirteenth resistor are respectively connected with the base electrode of the first switching tube, the base electrode of the second switching tube and the base electrode of the third switching tube, the emitting electrode of the first switching tube, the emitting electrode of the second switching tube and the emitting electrode of the third switching tube are grounded, and the collecting electrode of the first switching tube, the collecting electrode of the second switching tube and the collecting electrode of the third switching tube are respectively connected with the first end, the second end and the third end of the alarm device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222894619.4U CN219122410U (en) | 2022-11-01 | 2022-11-01 | Distance detection switch circuit for preventing television from being watched in short distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222894619.4U CN219122410U (en) | 2022-11-01 | 2022-11-01 | Distance detection switch circuit for preventing television from being watched in short distance |
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| Publication Number | Publication Date |
|---|---|
| CN219122410U true CN219122410U (en) | 2023-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222894619.4U Active CN219122410U (en) | 2022-11-01 | 2022-11-01 | Distance detection switch circuit for preventing television from being watched in short distance |
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| Country | Link |
|---|---|
| CN (1) | CN219122410U (en) |
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2022
- 2022-11-01 CN CN202222894619.4U patent/CN219122410U/en active Active
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