CN219979094U - Human induction device of bill-board - Google Patents
Human induction device of bill-board Download PDFInfo
- Publication number
- CN219979094U CN219979094U CN202321009875.9U CN202321009875U CN219979094U CN 219979094 U CN219979094 U CN 219979094U CN 202321009875 U CN202321009875 U CN 202321009875U CN 219979094 U CN219979094 U CN 219979094U
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- operational amplifier
- induction
- resistor
- human body
- capacitor
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- 230000006698 induction Effects 0.000 title claims abstract description 48
- 230000001629 suppression Effects 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 230000002708 enhancing effect Effects 0.000 claims abstract description 3
- 239000003990 capacitor Substances 0.000 claims description 26
- 230000009977 dual effect Effects 0.000 claims description 5
- 230000001976 improved effect Effects 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000001939 inductive effect Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Geophysics And Detection Of Objects (AREA)
Abstract
The utility model discloses a human body induction device of a billboard, which comprises a human body induction module, a controller and an advertising lamp box, wherein the human body induction module comprises an induction sensor and an induction signal processing unit, the induction signal processing unit comprises a double operational amplifier protection circuit and an interference suppression circuit, the double operational amplifier protection circuit is used for enhancing detection signals of the induction sensor, sending the enhanced signals to the interference suppression circuit for low-pass filtering, and then sending the processed induction signals to the controller, and the controller is used for controlling the opening work of the advertising lamp box; according to the utility model, the human body sensing module is arranged in the billboard to sense and detect the passing human body, and the sensing signal processing unit is utilized to condition the detection signal of the sensing sensor, so that the external interference noise is well restrained, the accuracy of circuit control of the human body sensing device is improved, the degree of automation is high, the control is more stable, and the energy waste is effectively avoided.
Description
Technical Field
The utility model relates to the technical field of billboard detection, in particular to a billboard human body sensing device.
Background
At present, various billboards are placed in public places, the conventional billboards can play multimedia advertisements, and in order to obtain a better advertising effect, a large number of billboards are arranged for uninterrupted advertising, unmanned advertising can be frequently carried out in the advertising mode, and a large amount of resources are wasted through long-time accumulation. Therefore, the existing billboard is also added with an energy-saving control circuit, for example, the patent of application number 202222288735.1 discloses an OLED energy-saving control circuit, when a human body sensing module senses someone, the device can enable the triggering time length increasing module to trigger the OLED billboard to work, people can watch billboard information through the crowd, the stability of the billboard is required to be improved due to the fact that the circuit control adopted by the application is driven by a field effect tube, and the human body sensing module is also easy to be interfered by external environment, so that the overall control of the billboard is easy to be influenced by the outside, and energy waste is caused by frequent false triggering.
The present utility model provides a new solution to this problem.
Disclosure of Invention
In view of the above, the present utility model aims to overcome the drawbacks of the prior art, and to provide a human body sensing device for a billboard.
The technical scheme for solving the problems is as follows: the utility model provides a human induction system of bill-board, includes human induction module, controller and advertising light box, human induction module includes inductive sensor and response signal processing unit, the response signal processing unit includes that two fortune is put protection circuit and interference suppression circuit, two fortune are put protection circuit and are used for right inductive sensor's detected signal strengthens to send into the low pass filtering in the interference suppression circuit with the reinforcing signal, then send into the inductive signal after handling the controller, the controller is used for controlling advertising light box's the work of opening.
Preferably, the dual op-amp protection circuit includes op-amps AR1 and AR2, the inverting input terminal of op-amp AR1 is connected with the signal output terminal of the inductive sensor and one end of resistor R2 through resistor R1, and connect the output terminal of op-amp AR1 with capacitor C1 through parallel resistor R3, the non-inverting input terminal of op-amp AR1 is connected with the other end of resistor R2, and is grounded through resistor R4, the inverting input terminal of op-amp AR2 and one end of resistor R5 are connected with the output terminal of op-amp AR1, the non-inverting input terminal of op-amp AR2 is grounded, the output terminal of op-amp AR2 is connected with the other end of resistor R5, and an overcurrent protection component is further connected between the output terminal of op-amp AR2 and the inverting input terminal of op-amp AR 1.
Preferably, the overcurrent protection component comprises a triode VT1, an emitter of the triode VT1 is connected with an inverting input end of the operational amplifier AR1, a collector of the triode VT1 is grounded, and a base of the triode VT1 is connected with an output end of the operational amplifier AR2 through a resistor R6.
Preferably, the interference suppression circuit comprises an RC filter and an LC filter, the RC filter comprises a capacitor C2 and a resistor R7, one ends of the capacitor C2 and the resistor R7 are connected to the output end of the operational amplifier AR2, and the other ends of the capacitor C2 and the resistor R7 are grounded; the LC filter comprises capacitors C3 and C4 and an inductor L1, one end of the capacitor C3 and one end of the inductor L1 are connected with the output end of the operational amplifier AR2, the other end of the inductor L1 is connected with one end of the capacitor C4 and the controller, and the other ends of the capacitor C3 and the capacitor C4 are grounded.
Preferably, the sensing sensor is an AMN31112 human body infrared sensing sensor.
Through the technical scheme, the utility model has the beneficial effects that: according to the utility model, the human body sensing module is arranged in the billboard to sense and detect the passing human body, and the sensing signal processing unit is utilized to condition the detection signal of the sensing sensor, so that the external interference noise is well restrained, the accuracy of circuit control of the human body sensing device is improved, the degree of automation is high, the control is more stable, and the energy waste is effectively avoided.
Drawings
FIG. 1 is a block diagram of a system according to the present utility model.
Fig. 2 is a schematic diagram of a dual op-amp protection circuit according to the present utility model.
Fig. 3 is a schematic diagram of an interference suppression circuit according to the present utility model.
Detailed Description
The foregoing and other features, aspects and advantages of the present utility model will become more apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying figures 1-3. The following embodiments are described in detail with reference to the drawings.
Exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.
As shown in FIG. 1, the human induction device of the advertising board comprises a human induction module, a controller and an advertising lamp box, wherein the human induction module comprises an induction sensor and an induction signal processing unit, the induction signal processing unit comprises a double operational amplifier protection circuit and an interference suppression circuit, the double operational amplifier protection circuit is used for enhancing detection signals of the induction sensor, sending the enhanced signals to the interference suppression circuit for low-pass filtering, then sending the processed induction signals to the controller, and the controller is used for controlling the opening work of the advertising lamp box.
As shown in fig. 2, the dual op-amp protection circuit includes op-amps AR1 and AR2, the inverting input terminal of op-amp AR1 is connected to the signal output terminal of the inductive sensor and one end of resistor R2 through resistor R1, and is connected to the output terminal of op-amp AR1 through parallel resistor R3 and capacitor C1, the non-inverting input terminal of op-amp AR1 is connected to the other end of resistor R2, and is grounded through resistor R4, the output terminal of op-amp AR1 is connected to the inverting input terminal of op-amp AR2 and one end of resistor R5, the non-inverting input terminal of op-amp AR2 is grounded, the output terminal of op-amp AR2 is connected to the other end of resistor R5, and an overcurrent protection component is further connected between the output terminal of op-amp AR2 and the inverting input terminal of op-amp AR 1.
The overcurrent protection component comprises a triode VT1, wherein an emitter of the triode VT1 is connected with an inverting input end of the operational amplifier AR1, a collector of the triode VT1 is grounded, and a base of the triode VT1 is connected with an output end of the operational amplifier AR2 through a resistor R6.
As shown in fig. 3, the interference suppression circuit includes an RC filter and an LC filter, where the RC filter includes a capacitor C2 and a resistor R7, one ends of the capacitor C2 and the resistor R7 are connected to the output end of the operational amplifier AR2, and the other ends of the capacitor C2 and the resistor R7 are grounded; the LC filter comprises capacitors C3 and C4 and an inductor L1, one end of the capacitor C3 and one end of the inductor L1 are connected with the output end of the operational amplifier AR2, the other end of the inductor L1 is connected with one end of the capacitor C4 and the controller, and the other ends of the capacitor C3 and the capacitor C4 are grounded.
When the intelligent advertisement lamp box is specifically used, the sensing sensor is an AMN31112 human body infrared sensing sensor, and the human body infrared sensing sensor can be used for identifying the human body well, so that the problem that the advertisement lamp box is triggered by objects outside the human body to cause resource waste is avoided; meanwhile, in order to prevent the human body induction module from being interfered by external environment, the detection signal of the induction sensor is sent to the induction signal processing unit for processing, and the specific workflow and principle are as follows:
firstly, the dual operational amplifier protection circuit adopts operational amplifiers AR1 and AR2 to amplify induction signals step by step, wherein the operational amplifier AR1 utilizes a differential amplification principle to carry out primary enhancement on the induction signals, so that common mode interference in detection signals of an induction sensor is effectively inhibited, the amplification precision of the induction signals is improved, and phase compensation is added in the primary enhancement process, so that the amplification output effect of the induction signals can be effectively improved, and the system error is reduced; the operational amplifier AR2 is used for performing secondary enhancement processing on the output signal of the operational amplifier AR1, and rapidly improving the induction signal to an intensity range recognizable by the controller;
because the environment in which the billboard is arranged is generally complex and changeable, the external strong magnetism often exists to interfere the human body induction module, so that a strong current interference signal is generated in the induction signal, and the overcurrent protection component is used for protecting the human body induction module; when abnormal current occurs in the induction signal, the signal current amplified in two stages reaches the base electrode of the triode VT1 through the resistor R6, so that the triode VT1 is driven to be conducted, at the moment, the inverting input end of the operational amplifier AR1 is in short circuit with the ground, so that the abnormal current can be rapidly discharged, and the base current of the triode VT1 becomes smaller and is recovered to be cut off after the abnormal current disappears, so that the protection effect is good;
further, the interference suppression circuit carries out low-pass filtering on the induction signals output by the double operational amplifier protection circuit, wherein the RC filter and the LC filter are connected in series, induction is precisely filtered step by step, interference noise generated by the external environment is well suppressed, the detection accuracy of the human body induction module is greatly improved, and false triggering is avoided.
According to the utility model, the human body sensing module is arranged in the billboard to sense and detect the passing human body, and the sensing signal processing unit is utilized to condition the detection signal of the sensing sensor, so that the external interference noise is well restrained, and the accuracy of circuit control of the human body sensing device is improved; and send into the human response signal after the module processing of human response into the controller and carry out analysis processing, when the controller received human response signal, the power return circuit switch-on of control advertising light boxes to open bill-board work, degree of automation is high, and control is more stable, effectively avoids the energy extravagant.
While the utility model has been described in connection with certain embodiments, it is not intended that the utility model be limited thereto; for those skilled in the art to which the present utility model pertains and the related art, on the premise of based on the technical scheme of the present utility model, the expansion, the operation method and the data replacement should all fall within the protection scope of the present utility model.
Claims (5)
1. The utility model provides a human induction system of bill-board, includes human induction module, controller and advertising light boxes, its characterized in that: the human body induction module comprises an induction sensor and an induction signal processing unit, the induction signal processing unit comprises a double operational amplifier protection circuit and an interference suppression circuit, the double operational amplifier protection circuit is used for enhancing detection signals of the induction sensor, sending the enhanced signals to the interference suppression circuit for low-pass filtering, then sending the processed induction signals to the controller, and the controller is used for controlling the opening work of the advertising lamp box.
2. The billboard body sensing apparatus of claim 1, wherein: the dual operational amplifier protection circuit comprises operational amplifiers AR1 and AR2, wherein the inverting input end of the operational amplifier AR1 is connected with the signal output end of the induction sensor and one end of a resistor R2 through a resistor R1, the inverting input end of the operational amplifier AR1 is connected with the other end of the resistor R2 through a resistor R3 connected in parallel, the output end of the operational amplifier AR1 is grounded through a resistor R4, the inverting input end of the operational amplifier AR2 and one end of a resistor R5 are connected with the output end of the operational amplifier AR1, the inverting input end of the operational amplifier AR2 is grounded, the output end of the operational amplifier AR2 is connected with the other end of the resistor R5, and an overcurrent protection component is further connected between the output end of the operational amplifier AR2 and the inverting input end of the operational amplifier AR 1.
3. A billboard body sensing device according to claim 2, wherein: the overcurrent protection component comprises a triode VT1, an emitter of the triode VT1 is connected with an inverting input end of the operational amplifier AR1, a collector of the triode VT1 is grounded, and a base of the triode VT1 is connected with an output end of the operational amplifier AR2 through a resistor R6.
4. A billboard body sensing device according to claim 2 or 3, wherein: the interference suppression circuit comprises an RC filter and an LC filter, the RC filter comprises a capacitor C2 and a resistor R7, one ends of the capacitor C2 and the resistor R7 are connected with the output end of the operational amplifier AR2, and the other ends of the capacitor C2 and the resistor R7 are grounded; the LC filter comprises capacitors C3 and C4 and an inductor L1, one end of the capacitor C3 and one end of the inductor L1 are connected with the output end of the operational amplifier AR2, the other end of the inductor L1 is connected with one end of the capacitor C4 and the controller, and the other ends of the capacitor C3 and the capacitor C4 are grounded.
5. The billboard body sensing apparatus of claim 1, wherein: the induction sensor is an AMN31112 human body infrared induction sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321009875.9U CN219979094U (en) | 2023-04-28 | 2023-04-28 | Human induction device of bill-board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321009875.9U CN219979094U (en) | 2023-04-28 | 2023-04-28 | Human induction device of bill-board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219979094U true CN219979094U (en) | 2023-11-07 |
Family
ID=88591382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321009875.9U Active CN219979094U (en) | 2023-04-28 | 2023-04-28 | Human induction device of bill-board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219979094U (en) |
-
2023
- 2023-04-28 CN CN202321009875.9U patent/CN219979094U/en active Active
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