CN210777027U - Infrared correlation detector - Google Patents
Infrared correlation detector Download PDFInfo
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- CN210777027U CN210777027U CN201922190615.6U CN201922190615U CN210777027U CN 210777027 U CN210777027 U CN 210777027U CN 201922190615 U CN201922190615 U CN 201922190615U CN 210777027 U CN210777027 U CN 210777027U
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- 239000003990 capacitor Substances 0.000 claims abstract description 37
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 5
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 5
- 239000004065 semiconductor Substances 0.000 claims abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000003321 amplification Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The utility model relates to the field of detectors, and discloses an infrared correlation detector, which comprises a solar cell panel, a storage battery, an infrared transmitter, an infrared receiver, an alarm controller and a power supply module, wherein the solar cell panel is connected with the infrared transmitter through the storage battery, the infrared transmitter is communicated with the infrared receiver in an infrared mode, the infrared receiver is connected with the alarm controller, and the power supply module is connected with the alarm controller; the power supply module comprises a transformer, a rectifier bridge, a first capacitor, a first diode, a second capacitor, a second resistor, a first MOS (metal oxide semiconductor) tube, a voltage-stabilizing reference source, a first triode, a third resistor, a second diode, a fourth potentiometer, a fifth resistor, a third capacitor and a voltage output end. Implement the utility model discloses an infrared correlation detector has following beneficial effect: the circuit structure is simpler, the cost is lower, convenient maintenance, the security and the reliability of circuit are higher.
Description
Technical Field
The utility model relates to a survey the ware field, in particular to infrared correlation detector.
Background
The active infrared intrusion detector is composed of an active infrared transmitter and a passive infrared receiver, and a device capable of generating an alarm state when an infrared beam between the transmitter and the receiver is completely intercepted or intercepted according to a given percentage is called as the active infrared intrusion detector. The active infrared transmitter is usually adopted, and has the main advantages of small volume and use of both alternating current and direct current, and most of active infrared intrusion detectors adopt complementary self-excited multivibrator circuits as driving power supplies and are directly added at two ends of an infrared light-emitting diode to enable the infrared light-emitting diode to emit infrared beams which are modulated by pulses and have high duty ratio, so that the power consumption of the power supplies is reduced, and the anti-interference capability of the active infrared intrusion detectors is enhanced. Fig. 1 is a schematic circuit diagram of a power supply portion of a conventional infrared correlation detector, and it can be seen from fig. 1 that the power supply portion of the conventional infrared correlation detector uses many components and parts, and has a complex circuit structure, a high hardware cost and inconvenient maintenance. In addition, since the power supply part of the conventional infrared correlation detector lacks the corresponding circuit protection function, for example: the safety and reliability of the circuit are poor due to the lack of the current-limiting protection function.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a circuit structure comparatively simple, the cost is lower, the security and the higher infrared correlation detector of reliability of convenient maintenance, circuit.
The utility model provides a technical scheme that its technical problem adopted is: the infrared correlation detector comprises a solar cell panel, a storage battery, an infrared transmitter, an infrared receiver, an alarm controller and a power supply module, wherein the solar cell panel is connected with the infrared transmitter through the storage battery, the infrared transmitter is communicated with the infrared receiver in an infrared mode, the infrared receiver is connected with the alarm controller, and the power supply module is connected with the alarm controller;
the power supply module comprises a transformer, a rectifier bridge, a first capacitor, a first diode, a second capacitor, a second resistor, a first MOS (metal oxide semiconductor) tube, a voltage-stabilizing reference source, a first triode, a third resistor, a second diode, a fourth potentiometer, a fifth resistor, a third capacitor and a voltage output end, one end of a primary coil of the transformer is connected with one end of alternating current, the other end of the primary coil of the transformer is connected with the other end of the alternating current, one end of a secondary coil of the transformer is respectively connected with an anode of the first diode and an alternating current input end of the rectifier bridge, a cathode of the first diode is respectively connected with one end of the second capacitor and one end of the second resistor, the other end of the secondary coil of the transformer is connected with the other alternating current input end of the rectifier bridge, and a direct current output end of the rectifier bridge is respectively connected with one end of the first capacitor, The other end of the second capacitor is connected with the source electrode of the first MOS transistor, the gate electrode of the first MOS transistor is respectively connected with the other end of the second resistor, the cathode of the voltage-stabilizing reference source and the collector electrode of the first triode, the drain electrode of the first MOS transistor is respectively connected with the base electrode of the first triode and one end of the third resistor, the emitter electrode of the first triode is connected with the anode of the second diode, the cathode of the second diode is respectively connected with the other end of the third resistor, one fixed end of the fourth potentiometer, the sliding end of the fourth potentiometer, one end of the third capacitor and one end of the voltage output end, the reference electrode of the voltage-stabilizing reference source is respectively connected with the other fixed end of the fourth potentiometer and one end of the fifth resistor, and the other dc output end of the rectifier bridge is respectively connected with the other end of the first capacitor and one end of the first resistor, the other end of the first resistor is connected with the anode of the voltage-stabilizing reference source, the other end of the fifth resistor, the other end of the third capacitor and the other end of the voltage output end respectively.
In the infrared correlation detector of the present invention, the model of the second diode is L-1822.
In the infrared correlation detector, the power supply module further includes a sixth resistor, one end of the sixth resistor is connected to the other end of the second capacitor, and the other end of the sixth resistor is connected to the source of the first MOS transistor.
In the infrared correlation detector of the present invention, the resistance of the sixth resistor is 32k Ω.
In the infrared correlation detector of the present invention, the first triode is an NPN-type triode.
In the infrared correlation detector of the present invention, the first MOS transistor is an N-channel MOS transistor.
Implement the utility model discloses an infrared correlation detector has following beneficial effect: the solar energy monitoring system is provided with a solar cell panel, a storage battery, an infrared transmitter, an infrared receiver, an alarm controller and a power supply module; the power supply module comprises a transformer, a rectifier bridge, a first capacitor, a first diode, a second capacitor, a second resistor, a first MOS (metal oxide semiconductor) tube, a voltage-stabilizing reference source, a first triode, a third resistor, a second diode, a fourth potentiometer, a fifth resistor, a third capacitor and a voltage output end, the power supply module is compared with the power supply part of the traditional infrared correlation detector, the used components are fewer, some components are saved, the hardware cost can be reduced, in addition, the second diode is used for current-limiting protection, the circuit structure is simpler, the cost is lower, the maintenance is convenient, and the safety and the reliability of the circuit are higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic circuit diagram of a power supply portion of a conventional infrared correlation detector;
fig. 2 is a schematic structural diagram of an embodiment of the infrared correlation detector of the present invention;
fig. 3 is a schematic circuit diagram of the power supply module in the embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the embodiment of the infrared correlation detector of the present invention, a schematic structural diagram of the infrared correlation detector is shown in fig. 2. In fig. 2, the infrared correlation detector comprises a solar cell panel 1, a storage battery 2, an infrared transmitter 3, an infrared receiver 4, an alarm controller 5 and a power supply module 6, wherein the solar cell panel 1 is connected with the infrared transmitter 3 through the storage battery 2, the infrared transmitter 3 and the infrared receiver 4 are communicated in an infrared mode, the infrared receiver 4 is connected with the alarm controller 5, and the power supply module 6 is connected with the alarm controller 5. The positive and negative poles of the storage battery 2 are respectively connected with a power plug, and the storage battery 2 stores solar energy absorbed by the solar cell panel 1 and converts the solar energy into electric energy. The infrared correlation detector is provided with the solar cell panel 1 and the storage battery 2, solar energy is fully utilized, the solar energy is converted into electric energy, and energy is saved.
In this embodiment, the solar cell panel 1, the storage battery 2, the infrared emitter 3, the infrared receiver 4, and the alarm controller 5 are all implemented by using a structure in the prior art, and the working principle thereof is also a working principle in the prior art, which is not described in detail herein.
Fig. 3 is a schematic circuit diagram of a power supply module in this embodiment, in fig. 3, the power supply module 6 includes a transformer T, a rectifier bridge Z, a first capacitor C1, a first diode D1, a second capacitor C2, a second resistor R2, a first resistor R1, a first MOS transistor M1, a voltage-stabilizing reference source U1, a first triode Q1, a third resistor R3, a second diode D2, a fourth potentiometer RP4, a fifth resistor R5, a third capacitor C3, and a voltage output Vo, wherein one end of a primary coil of the transformer T is connected to one end of an alternating current AC, the other end of the primary coil of the transformer T is connected to the other end of the alternating current AC, one end of a secondary coil of the transformer T is connected to an anode of a first diode D1 and one alternating current input end of the rectifier bridge Z, a cathode of a first diode D1 is connected to one end of the second capacitor C2 and one end of the rectifier bridge R2, the other end of the rectifier bridge Z is connected to the other end of the rectifier bridge Z, one direct current output end of the rectifier bridge Z is respectively connected with one end of a first capacitor C1, the other end of a second capacitor C2 and a source of a first MOS transistor M1, a gate of the first MOS transistor M1 is respectively connected with the other end of a second resistor R2, a cathode of a regulated reference source U1 and a collector of a first triode Q1, a drain of the first MOS transistor M1 is respectively connected with a base of the first triode Q1 and one end of a third resistor R3, an emitter of the first triode Q1 is connected with an anode of a second diode D2, a cathode of the second diode D2 is respectively connected with the other end of the third resistor R3, one fixed end of a fourth potentiometer RP4, a sliding end of the fourth potentiometer RP4, one end of a third capacitor C3 and one end of a voltage output end Vo, a reference electrode of the regulated reference source U1 is respectively connected with the other fixed end of the fourth potentiometer RP4 and one end of a fifth resistor RP 5, and the other end of the rectifier bridge Z1 is respectively connected with the first output end of the first resistor R1, the other end of the first resistor R1 is respectively connected with the anode of the voltage-stabilizing reference source U1, the other end of the fifth resistor R5, the other end of the third capacitor C3 and the other end of the voltage output end Vo.
Compared with the power supply part of the traditional infrared correlation detector in fig. 1, the power supply module 6 has the advantages of fewer used components, simpler circuit structure and convenience in maintenance, and can reduce the hardware cost due to the fact that some components are saved. In addition, the second diode D2 is a current limiting diode for current limiting protection of the emitter current of the first transistor Q1. The current limiting protection principle is as follows: when the emitter current of the first triode Q1 is large, the second diode D2 can reduce the emitter current of the first triode Q1 to keep the first triode Q1 in a normal working state, and the elements in the circuit are not burnt out due to the large current, so that the safety and reliability of the circuit are high. It should be noted that in the present embodiment, the second diode D2 has a model number L-1822. Of course, in practical applications, the second diode D2 may also be another type of diode with the same function.
The working principle of the power supply module 6 is as follows: alternating Current (AC) is subjected to voltage reduction by a transformer T, rectification by a rectifier bridge Z and filtering by a first capacitor C1, a fourth potentiometer RP4 and a fifth resistor R5 form a voltage division circuit, a second resistor R2 and a voltage stabilization reference source U1 form a sampling amplification circuit, a third resistor R3 and a first triode Q1 form a current-limiting protection circuit, a first Metal Oxide Semiconductor (MOS) transistor M1 is used as an adjusting transistor, and the third capacitor C3 is used for filtering output voltage. The pressure stabilizing process comprises the following steps: when the output voltage is reduced, the potential of the reference electrode of the voltage-stabilizing reference source U1 is reduced, the cathode voltage of the voltage-stabilizing reference source U1 is increased through the internal amplification of the voltage-stabilizing reference source U1, and the potential of the emitting electrode of the first triode Q1 is increased after the adjustment of the first MOS tube M1; on the contrary, when the output voltage increases, the reference electrode potential of the regulated voltage reference source U1 increases, the cathode voltage of the regulated voltage reference source U1 decreases, and after being adjusted by the first MOS transistor M1, the emitter potential of the first triode Q1 decreases, so that the output voltage is stabilized. When the output current is larger than the set value, the first triode Q1 is cut off, so that the output current is limited within the set value, thereby achieving the purpose of current limiting.
In this embodiment, the first transistor Q1 is an NPN transistor, and the first MOS transistor M1 is an N-channel MOS transistor. Certainly, in practical applications, the first transistor Q1 may also be a PNP transistor, and the first MOS transistor M1 may also be a P-channel MOS transistor, but the structure of the circuit is also changed accordingly.
In this embodiment, the power supply module 6 further includes a sixth resistor R6, one end of the sixth resistor R6 is connected to the other end of the second capacitor C2, and the other end of the sixth resistor R6 is connected to the source of the first MOS transistor M1. The sixth resistor R6 is a current limiting resistor, and is used for current limiting protection of the source current of the first MOS transistor M1. The current limiting protection principle is as follows: when the source current of the first MOS transistor M1 is large, the sixth resistor R6 can reduce the source current of the first MOS transistor M1 to keep the first MOS transistor M1 in a normal operating state, so that the device in the circuit is not burned out due to the large current, and the safety and reliability of the circuit are further enhanced. It should be noted that, in the present embodiment, the resistance of the sixth resistor R6 is 32k Ω. Of course, in practical applications, the resistance of the sixth resistor R6 may be adjusted accordingly, that is, the resistance of the sixth resistor R6 may be increased or decreased accordingly.
In a word, in this embodiment, compared with the power supply part of the conventional infrared correlation detector, the power supply module 6 uses fewer components, has a simpler circuit structure, is convenient to maintain, and can reduce the hardware cost due to the fact that some components are saved. In addition, the power supply module 6 is provided with a current limiting diode, so that the safety and the reliability of the circuit are high.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An infrared correlation detector is characterized by comprising a solar cell panel, a storage battery, an infrared transmitter, an infrared receiver, an alarm controller and a power supply module, wherein the solar cell panel is connected with the infrared transmitter through the storage battery;
the power supply module comprises a transformer, a rectifier bridge, a first capacitor, a first diode, a second capacitor, a second resistor, a first MOS (metal oxide semiconductor) tube, a voltage-stabilizing reference source, a first triode, a third resistor, a second diode, a fourth potentiometer, a fifth resistor, a third capacitor and a voltage output end, one end of a primary coil of the transformer is connected with one end of alternating current, the other end of the primary coil of the transformer is connected with the other end of the alternating current, one end of a secondary coil of the transformer is respectively connected with an anode of the first diode and an alternating current input end of the rectifier bridge, a cathode of the first diode is respectively connected with one end of the second capacitor and one end of the second resistor, the other end of the secondary coil of the transformer is connected with the other alternating current input end of the rectifier bridge, and a direct current output end of the rectifier bridge is respectively connected with one end of the first capacitor, The other end of the second capacitor is connected with the source electrode of the first MOS transistor, the gate electrode of the first MOS transistor is respectively connected with the other end of the second resistor, the cathode of the voltage-stabilizing reference source and the collector electrode of the first triode, the drain electrode of the first MOS transistor is respectively connected with the base electrode of the first triode and one end of the third resistor, the emitter electrode of the first triode is connected with the anode of the second diode, the cathode of the second diode is respectively connected with the other end of the third resistor, one fixed end of the fourth potentiometer, the sliding end of the fourth potentiometer, one end of the third capacitor and one end of the voltage output end, the reference electrode of the voltage-stabilizing reference source is respectively connected with the other fixed end of the fourth potentiometer and one end of the fifth resistor, and the other dc output end of the rectifier bridge is respectively connected with the other end of the first capacitor and one end of the first resistor, the other end of the first resistor is connected with the anode of the voltage-stabilizing reference source, the other end of the fifth resistor, the other end of the third capacitor and the other end of the voltage output end respectively.
2. The infrared correlation detector of claim 1, wherein the second diode is model L-1822.
3. The infrared correlation detector of claim 2, wherein the power supply module further comprises a sixth resistor, one end of the sixth resistor is connected to the other end of the second capacitor, and the other end of the sixth resistor is connected to the source of the first MOS transistor.
4. An infrared correlation detector according to claim 3, wherein the resistance of the sixth resistor is 32k Ω.
5. The infrared correlation detector of any of claims 1 to 4, wherein the first transistor is an NPN transistor.
6. The infrared correlation detector as claimed in any one of claims 1 to 4, wherein the first MOS transistor is an N-channel MOS transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922190615.6U CN210777027U (en) | 2019-12-06 | 2019-12-06 | Infrared correlation detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922190615.6U CN210777027U (en) | 2019-12-06 | 2019-12-06 | Infrared correlation detector |
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| Publication Number | Publication Date |
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| CN210777027U true CN210777027U (en) | 2020-06-16 |
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| CN201922190615.6U Expired - Fee Related CN210777027U (en) | 2019-12-06 | 2019-12-06 | Infrared correlation detector |
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| CN (1) | CN210777027U (en) |
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- 2019-12-06 CN CN201922190615.6U patent/CN210777027U/en not_active Expired - Fee Related
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Granted publication date: 20200616 |