CN210777015U - Propane gas alarm device - Google Patents
Propane gas alarm device Download PDFInfo
- Publication number
- CN210777015U CN210777015U CN201922454744.1U CN201922454744U CN210777015U CN 210777015 U CN210777015 U CN 210777015U CN 201922454744 U CN201922454744 U CN 201922454744U CN 210777015 U CN210777015 U CN 210777015U
- Authority
- CN
- China
- Prior art keywords
- resistor
- input end
- circuit
- amplifier
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Emergency Alarm Devices (AREA)
Abstract
The utility model discloses a propane gas alarm device, including propane sensor, signal amplification circuit, AD converting circuit, singlechip and the warning circuit who connects gradually, warning circuit include the two-stage circuit, the acousto-optic warning circuit that first order circuit is connected with the singlechip, the second grade is the audio frequency amplification warning circuit who is connected with acousto-optic warning circuit. The utility model discloses an alarm device adopts the warning circuit of two-stage, has increased signal volume and power, and circuit structure is simple, and the amplification effect is obvious, and the practicality is strong.
Description
Technical Field
The utility model relates to a power electronic technology field especially relates to a propane gas alarm device.
Background
The audible and visual alarm is used in dangerous places, and sends out warning signals to people through sound and light when dangerous situations or emergency situations occur on the spot. The common electronic alarm is an audio alarm, and the volume of an audio signal for alarming has obvious influence on the warning effect. In some workshops with large noise, the sound of a horn on some alarm devices installed is too small, and in the noisy workshops, workers possibly far away cannot hear the sound of the alarm, so that accident potential hazards cannot be discovered as soon as possible, effective measures are taken, accidents are avoided, and the safety of industrial production and people's life is ensured.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the propane gas alarm device is provided.
The purpose of the utility model is realized with the following mode:
the propane gas alarm device comprises a propane sensor, a signal amplification circuit, an A/D conversion circuit, a single chip microcomputer and an alarm circuit which are sequentially connected, wherein the alarm circuit comprises two stages of circuits, the first stage of circuit is an audible and visual alarm circuit connected with the single chip microcomputer, and the second stage of circuit is an audio amplification alarm circuit connected with the audible and visual alarm circuit.
The acousto-optic alarm circuit comprises a first loudspeaker LS1, a triode Q, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a first diode D1 and a second diode D2; one end of the tenth resistor R10 is connected with the single chip microcomputer, the other end of the tenth resistor R10 is connected with the base electrode of the triode Q, the collector electrode of the triode Q is connected with the ground wire, the emitter electrode of the triode Q is respectively connected with the cathode of the first diode D1 and the cathode of the second diode D2, the anode of the first diode D1 is connected with one end of the ninth resistor R9, the other end of the ninth resistor R9 is respectively connected with the power supply and one end of the eleventh resistor R11, and the other end of the eleventh resistor R11 and the anode of the second diode D2 are respectively connected with the first input end and the second input end of the first horn.
The audio amplification alarm circuit comprises a first input end connected with the input of a first loudspeaker and a second input end connected with the second input end of the first loudspeaker, the first input end sequentially passes through a first capacitor C1 and a first resistor R1 and then is respectively connected with the negative input end of a first amplifier A1 and one end of a third resistor R3, the other end of the third resistor R3 passes through a third capacitor C3 and then is respectively connected with one end of an eighth resistor R8 and the first input end of a second loudspeaker LS2, the second input end sequentially passes through a second capacitor C2 and a second resistor R2 and then is respectively connected with the positive input end of the first amplifier A1 and one end of a fourth resistor R4, the other end of the fourth resistor R4 is respectively connected with one end of a fourth capacitor C4 and one end of a sixth capacitor C6, the other end of the fourth capacitor C4 is grounded, the other end of the sixth capacitor C6 passes through a sixth resistor R6 and then is connected with the positive input end of a second amplifier A2, the output end of the first amplifier a1 passes through a fifth capacitor C5 and then is connected to the other end of an eighth resistor R8 and one end of a fifth resistor R5, the other end of the fifth resistor R5 is connected to the negative input end of the second amplifier a2 and one end of a seventh resistor R7, and the output end of the second amplifier a2 is connected to the other end of the seventh resistor R7 and the second input end of the second horn LS 2.
The first amplifier and the second amplifier are both LM 358.
The utility model has the advantages that: compared with the prior art, the utility model discloses an alarm device adopts the warning circuit of two-stage, has increased signal volume and power, and circuit structure is simple, and it is obvious to enlarge the effect, and the practicality is strong.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same technical meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and it should be further understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, devices, components, and/or combinations thereof.
The propane gas alarm device comprises a propane sensor, a signal amplification circuit, an A/D conversion circuit, a single chip microcomputer and an alarm circuit which are sequentially connected, wherein the alarm circuit comprises two stages of circuits, the first stage of circuit is an audible and visual alarm circuit connected with the single chip microcomputer, and the second stage of circuit is an audio amplification alarm circuit connected with the audible and visual alarm circuit.
The acousto-optic alarm circuit comprises a first horn, a triode Q, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a first diode D1 and a second diode D2; one end of the tenth resistor R10 is connected with the single chip microcomputer, the other end of the tenth resistor R10 is connected with the base electrode of the triode Q, the collector electrode of the triode Q is connected with the ground wire, the emitter electrode of the triode Q is respectively connected with the cathode of the first diode D1 and the cathode of the second diode D2, the anode of the first diode D1 is connected with one end of the ninth resistor R9, the other end of the ninth resistor R9 is respectively connected with the power supply and one end of the eleventh resistor R11, and the other end of the eleventh resistor R11 and the anode of the second diode D2 are respectively connected with the first input end and the second input end of the first horn.
The audio amplification alarm circuit comprises a first input end connected with the input of a first loudspeaker and a second input end connected with the second input end of the first loudspeaker, the first input end is respectively connected with the negative input end of a first amplifier A1 and one end of a third resistor R3 after sequentially passing through a first capacitor C1 and a first resistor R1, the other end of the third resistor R3 is respectively connected with one end of an eighth resistor R8 and the first input end of a second loudspeaker after passing through a third capacitor C3, the second input end is respectively connected with the positive input end of a first amplifier A1 and one end of a fourth resistor R4 after sequentially passing through a second capacitor C2 and a second resistor R2, the other end of the fourth resistor R4 is respectively connected with one end of a fourth capacitor C4 and one end of a sixth capacitor C6, the other end of the fourth capacitor C4 is grounded, the other end of the sixth capacitor C6 is connected with the positive input end of the second amplifier A2 after passing through a sixth resistor R6, the output end of the first amplifier a1 is connected to the other end of the eighth resistor R8 and one end of the fifth resistor R5 respectively after passing through the fifth capacitor C5, the other end of the fifth resistor R5 is connected to the negative input end of the second amplifier a2 and one end of the seventh resistor R7 respectively, and the output end of the second amplifier a2 is connected to the other end of the seventh resistor R7 and the second input end of the second horn respectively.
The first amplifier and the second amplifier are both LM 358.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and changes may be made without inventive changes in the technical solutions of the present invention.
Claims (4)
1. The utility model provides a propane gas alarm device, includes propane sensor, signal amplification circuit, AD converting circuit, singlechip and the warning circuit that connects gradually, its characterized in that: the alarm circuit comprises two stages of circuits, wherein the first stage of circuit is an audible and visual alarm circuit connected with the single chip microcomputer, and the second stage of circuit is an audio amplification alarm circuit connected with the audible and visual alarm circuit.
2. A propane gas warning device according to claim 1, wherein: the acousto-optic alarm circuit comprises a first loudspeaker (LS 1), a triode (Q), a ninth resistor (R9), a tenth resistor (R10), an eleventh resistor (R11), a first diode (D1) and a second diode (D2); one end of a tenth resistor (R10) is connected with the single chip microcomputer, the other end of the tenth resistor is connected with the base electrode of the triode (Q), the collector electrode of the triode (Q) is connected with the ground wire, the emitter electrode of the triode (Q) is respectively connected with the cathode of the first diode (D1) and the cathode of the second diode (D2), the anode of the first diode (D1) is connected with one end of a ninth resistor (R9), the other end of the ninth resistor (R9) is respectively connected with the power supply and one end of an eleventh resistor (R11), and the other end of the eleventh resistor (R11) and the anode of the second diode (D2) are respectively connected with the first input end and the second input end of the first loudspeaker.
3. A propane gas warning device according to claim 1, wherein: the audio amplification alarm circuit comprises a first input end connected with the input of a first loudspeaker and a second input end connected with the second input end of the first loudspeaker, the first input end sequentially passes through a first capacitor (C1) and a first resistor (R1) and then is respectively connected with the negative input end of a first amplifier (A1) and one end of a third resistor (R3), the other end of the third resistor (R3) passes through a third capacitor (C3) and then is respectively connected with one end of an eighth resistor (R8) and the first input end of a second loudspeaker (LS 2), the second input end sequentially passes through a second capacitor (C2) and a second resistor (R2) and then is respectively connected with the positive input end of the first amplifier (A1) and one end of a fourth resistor (R4), the other end of the fourth resistor (R4) is respectively connected with one end of a fourth capacitor (C4) and one end of a sixth capacitor (C6), and the other end of the fourth capacitor (C4) is grounded, the other end of the sixth capacitor (C6) is connected with the positive input end of the second amplifier (a 2) after passing through the sixth resistor (R6), the output end of the first amplifier (a 1) is connected with the other end of the eighth resistor (R8) and one end of the fifth resistor (R5) after passing through the fifth capacitor (C5), the other end of the fifth resistor (R5) is connected with the negative input end of the second amplifier (a 2) and one end of the seventh resistor (R7), and the output end of the second amplifier (a 2) is connected with the other end of the seventh resistor (R7) and the second input end of the second horn (LS 2).
4. A propane gas warning device according to claim 3, wherein: the first amplifier and the second amplifier are both LM 358.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922454744.1U CN210777015U (en) | 2019-12-30 | 2019-12-30 | Propane gas alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922454744.1U CN210777015U (en) | 2019-12-30 | 2019-12-30 | Propane gas alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210777015U true CN210777015U (en) | 2020-06-16 |
Family
ID=71038702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922454744.1U Active CN210777015U (en) | 2019-12-30 | 2019-12-30 | Propane gas alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210777015U (en) |
-
2019
- 2019-12-30 CN CN201922454744.1U patent/CN210777015U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210777015U (en) | Propane gas alarm device | |
| CN201974894U (en) | Anti-theft alarm circuit | |
| CN103318080A (en) | Intelligent reversing alarming device | |
| CN207489210U (en) | A kind of photoelectric smoke detecting alarm | |
| CN105451137A (en) | User equipment wake-up method and device | |
| CN202048981U (en) | City noise monitoring device | |
| CN103471727A (en) | Large-scale rotating machine bearing temperature alarming and monitoring device | |
| CN210574111U (en) | Sound control circuit for intelligent alarm | |
| CN104424750A (en) | Concentrator device capable of give out alarm | |
| CN203689635U (en) | Novel computer burglar alarm circuit | |
| CN205068656U (en) | High sensitivity's acoustic control theftproof warning circuit | |
| CN207232240U (en) | A kind of shockproof alarm circuit and wrist type Antistatic alarm | |
| CN201638312U (en) | Adjustable intelligent sound pressure warner device | |
| CN203192137U (en) | Memory type broken line detector | |
| CN204993790U (en) | Early warning broadcasting audio amplifier | |
| CN205356648U (en) | Novel suspension system utters long and high -pitched sounds | |
| CN203366727U (en) | Alarm whistle with power of ten watt | |
| CN207097160U (en) | A kind of warning circuit of intelligent electric meter | |
| CN203192170U (en) | High-voltage inductive circuit | |
| CN204440583U (en) | A kind of sound light alarming circuit | |
| CN207612247U (en) | A kind of high stability power amplifier monolithic integrated optical circuit | |
| CN203179191U (en) | Touch type sound alarm circuit | |
| CN102469403A (en) | Sound conversion testing system and method | |
| CN207977944U (en) | A kind of power amplifier | |
| TW200843984A (en) | An anti-stealing system for a automobile and a method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |