CN209543553U - A kind of infrared transmission monitoring device - Google Patents
A kind of infrared transmission monitoring device Download PDFInfo
- Publication number
- CN209543553U CN209543553U CN201920225621.8U CN201920225621U CN209543553U CN 209543553 U CN209543553 U CN 209543553U CN 201920225621 U CN201920225621 U CN 201920225621U CN 209543553 U CN209543553 U CN 209543553U
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- Prior art keywords
- connect
- voltage comparator
- infrared
- resistance
- power supply
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Abstract
The utility model discloses a kind of infrared transmission monitoring devices, monitoring circuit including being built in monitoring device, first resistor is connected with the first infrared diode, second resistance is connected with the second infrared diode, second infrared diode cathode is connect with voltage comparator non-inverting input terminal, 3rd resistor is connect with the 4th resistance common end with voltage comparator reversed-phase output, voltage comparator power end is connect with power supply power supply, voltage comparator ground terminal ground connection, voltage comparator output end is connect with the first PNP triode base stage, first PNP triode emitter is connect with buzzer cathode, buzzer anode connects to power supply.It is monitored the utility model has the beneficial effects that being realized by infrared diode, high sensitivity, improves monitoring safety, staff is warned by buzzer sounding in someone, buzzer is closed at nobody, reduce the loss of power.
Description
Technical field
The utility model belongs to technology of infrared transmission field, and in particular to a kind of infrared transmission monitoring device.
Background technique
Monitoring device refers to the system prison created to a kind of duration concern of information in behavior, activity or other variations
Equipment is controlled, typically to the purpose for reaching influence, management, guidance or protection on people.
Nowadays, due to the safety issue for considering to monitor, usually there is staff's monitoring daytime, but if it is night
The problems such as late time, people are usually easy to produce fatigue, may cause monitoring fault.Therefore, not using automatically-monitored equipment
The working strength that staff can only be mitigated, is also able to achieve security monitoring.
Utility model content
To overcome technological deficiency of the existing technology, the utility model discloses a kind of infrared transmission monitoring device,
It solves the problems, such as manually to monitor large labor intensity and security monitoring.
Technical solution adopted by the utility model to solve its technical problems is a kind of infrared transmission monitoring devices, including
Be built in the monitoring circuit of monitoring device, monitoring circuit include the first infrared diode, the second infrared diode, first resistor,
Second resistance, 3rd resistor, the 4th resistance, voltage comparator, buzzer and the first PNP triode；
First resistor one end connects to power supply, and the other end is connect with the first infrared diode anode, the first infrared two pole
Pipe cathode ground connection, second resistance one end connect to power supply, and the other end is connect with the second infrared diode cathode, and second is infrared by two
Pole pipe plus earth, the second infrared diode cathode are connect with voltage comparator non-inverting input terminal, 3rd resistor and the 4th resistance
Series connection, and 3rd resistor is connect with the 4th resistance common end with voltage comparator reversed-phase output, voltage comparator power end and
Power supply power supply connection, voltage comparator ground terminal ground connection, voltage comparator output end are connect with the first PNP triode base stage, and first
PNP triode emitter is connect with buzzer cathode, and buzzer anode connects to power supply, the first PNP triode grounded collector.
Preferably, monitoring circuit further includes the 5th resistance, light emitting diode and the second PNP triode, the 5th resistance one end
It connects to power supply, the other end is connect with light emitting diode anode, and light emitting diode cathode and the second PNP triode emitter connect
It connects, the second PNP triode base stage is connect with the voltage comparator output end, the second PNP triode grounded collector.
Preferably, monitoring circuit further includes first capacitor, and first capacitor is connected in parallel to the first infrared diode both ends.
Preferably, monitoring circuit further includes the second capacitor, and the second capacitor is connected in parallel to the second infrared diode both ends.
It is monitored the utility model has the beneficial effects that being realized by infrared diode, high sensitivity, improves monitoring safety,
Staff is warned by buzzer sounding in someone, buzzer is closed at nobody, reduces the loss of power.
Detailed description of the invention
Fig. 1 is a kind of specific embodiment schematic illustration of the utility model.
Fig. 2 is another specific embodiment schematic illustration of the utility model.
Appended drawing reference: VCC- power supply, the first infrared diode of D1-, the second infrared diode of D2-, C1- first capacitor, C2-
Second capacitor, R1- first resistor, R2- second resistance, R3- 3rd resistor, the 4th resistance of R4-, the 5th resistance of R5-, A- voltage ratio
Compared with device, the first PNP triode of Q1-, the second PNP triode of Q2-, LED- light emitting diode, BL- buzzer.
Specific embodiment
More detailed description is done to the embodiments of the present invention below in conjunction with attached drawing and appended drawing reference, makes to be familiar with ability
The technology people in domain can implement accordingly after studying this specification carefully.It should be appreciated that specific embodiment described herein is only to solve
The utility model is released, is not used to limit the utility model.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connection " shall be understood in a broad sense.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
Embodiment 1: referring to attached drawing 1, a kind of attached infrared transmission monitoring device shown in Fig. 2, including be built in monitoring and set
Standby monitoring circuit, monitoring circuit include the first infrared diode, the second infrared diode, first resistor, second resistance, third
Resistance, the 4th resistance, voltage comparator, buzzer and the first PNP triode；
First resistor one end connects to power supply, and the other end is connect with the first infrared diode anode, the first infrared two pole
Pipe cathode ground connection, second resistance one end connect to power supply, and the other end is connect with the second infrared diode cathode, and second is infrared by two
Pole pipe plus earth, the second infrared diode cathode are connect with voltage comparator non-inverting input terminal, 3rd resistor and the 4th resistance
Series connection, and 3rd resistor is connect with the 4th resistance common end with voltage comparator reversed-phase output, voltage comparator power end and
Power supply power supply connection, voltage comparator ground terminal ground connection, voltage comparator output end are connect with the first PNP triode base stage, and first
PNP triode emitter is connect with buzzer cathode, and buzzer anode connects to power supply, the first PNP triode grounded collector.
In the present embodiment, the working principle for monitoring circuit is as follows: after the power is turned on, the first infrared diode shines, this
When nobody block the light of the first infrared diode sending, the second infrared diode can not receive infrared light, and therefore, second is red
Outer diode is still in reverse blocking state, and the second infrared diode cathode voltage is still high level, which send to voltage
Comparator non-inverting input terminal, 3rd resistor and the 4th resistance series connection partial pressure, the voltage value at the 4th resistance both ends, which is sent to voltage, to be compared
Device inverting input terminal, at this point, the value of voltage comparator non-inverting input terminal is greater than the value of its inverting input terminal, voltage comparator output
End output high level, the cut-off of the first PNP triode, buzzer can not be formed into a loop with power supply, i.e. buzzer not sounding；
Someone blocks the light of the first infrared diode sending, and light is reflexed on the second infrared diode, and second is infrared
Diode receives infrared light, is connected immediately, so that the second infrared diode cathode voltage declines, when the second infrared diode is negative
When pole tension is decreased below the voltage value at the 4th resistance both ends, at this point, the value of voltage comparator non-inverting input terminal is less than it instead
The value of phase input terminal, voltage comparator output end export low level, and the conducting of the first PNP triode, buzzer and power supply are formed back
Road, i.e. buzzer sounding indicate that someone enters monitoring area, warn staff by buzzer.
Wherein, monitoring circuit further includes first capacitor, and first capacitor is connected in parallel to the first infrared diode both ends；Monitor circuit
It further include the second capacitor, the second capacitor is connected in parallel to the second infrared diode both ends, and first capacitor and the second capacitor all have anti-dry
The effect of disturbing prevents useful signal and power supply from generating on the first infrared diode, the second infrared diode and intermodulates, to produce
Raw interference signal, the normal work of jamming equipment.
Preferably, monitoring circuit further includes the 5th resistance, light emitting diode and the second PNP triode, the 5th resistance one end
It connects to power supply, the other end is connect with light emitting diode anode, and light emitting diode cathode and the second PNP triode emitter connect
It connects, the second PNP triode base stage is connect with the voltage comparator output end, the second PNP triode grounded collector.
In another embodiment, which be further improved to embodiment 1, increases light warning function,
5th resistance is current-limiting resistance, protects light emitting diode, when voltage comparator output end is low level, the second PNP triode
Conducting, light emitting diode and power supply are formed into a loop, that is, are shone；When voltage comparator output end is high level, tri- pole the 2nd PNP
Pipe cut-off, light emitting diode can not be formed into a loop with power supply, shone and stopped.
The above content is the further descriptions made in conjunction with specific preferred embodiment to the utility model, cannot recognize
Determine specific embodiment of the present utility model to be only limited to these instructions.For the common skill of the utility model technical field
For art personnel, the other embodiments obtained in the case where not departing from the technical solution of the utility model be should be included in practical
In novel protection scope.
Claims (4)
1. a kind of infrared transmission monitoring device, it is characterised in that: the monitoring circuit including being built in monitoring device monitors circuit
Including the first infrared diode (D1), the second infrared diode (D2), first resistor (R1), second resistance (R2), 3rd resistor
(R3), the 4th resistance (R4), voltage comparator (A), buzzer (BL) and the first PNP triode (Q1)；
First resistor one end (R1) is connect with power supply (VCC), and the other end is connect with the first infrared diode (D1) anode, and first
Infrared diode (D1) cathode ground connection, second resistance one end (R2) are connect with power supply (VCC), the other end and the second infrared two pole
Manage the connection of (D2) cathode, the second infrared diode (D2) plus earth, the second infrared diode (D2) cathode and voltage comparator
(A) non-inverting input terminal connects, and 3rd resistor (R3) is connected with the 4th resistance (R4), and 3rd resistor (R3) and the 4th resistance (R4)
Common end is connect with voltage comparator (A) reversed-phase output, voltage comparator (A) power end with power supply (VCC) for being electrically connected, electricity
Comparator (A) ground terminal ground connection is pressed, voltage comparator (A) output end is connect with the first PNP triode (Q1) base stage, the first PNP tri-
Pole pipe (Q1) emitter is connect with buzzer (BL) cathode, and buzzer (BL) anode is connect with power supply (VCC), tri- pole the first PNP
Manage (Q1) grounded collector.
2. infrared transmission monitoring device as described in claim 1, it is characterised in that: monitoring circuit further includes the 5th resistance
(R5), light emitting diode (LED) and the second PNP triode (Q2), the 5th resistance one end (R5) are connect with power supply (VCC), another
One end is connect with light emitting diode (LED) anode, and light emitting diode (LED) cathode and the second PNP triode (Q2) emitter connect
It connects, the second PNP triode (Q2) base stage is connect with the voltage comparator (A) output end, the second PNP triode (Q2) collector
Ground connection.
3. infrared transmission monitoring device as described in claim 1, it is characterised in that: monitoring circuit further includes first capacitor
(C1), first capacitor (C1) is connected in parallel to the both ends the first infrared diode (D1).
4. infrared transmission monitoring device as described in claim 1, it is characterised in that: monitoring circuit further includes the second capacitor
(C2), the second capacitor (C2) is connected in parallel to the both ends the second infrared diode (D2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920225621.8U CN209543553U (en) | 2019-02-22 | 2019-02-22 | A kind of infrared transmission monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920225621.8U CN209543553U (en) | 2019-02-22 | 2019-02-22 | A kind of infrared transmission monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209543553U true CN209543553U (en) | 2019-10-25 |
Family
ID=68273822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920225621.8U Expired - Fee Related CN209543553U (en) | 2019-02-22 | 2019-02-22 | A kind of infrared transmission monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209543553U (en) |
-
2019
- 2019-02-22 CN CN201920225621.8U patent/CN209543553U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191025 Termination date: 20210222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |