CN2741828Y - Vehicle alarm - Google Patents
Vehicle alarm Download PDFInfo
- Publication number
- CN2741828Y CN2741828Y CN 200420027795 CN200420027795U CN2741828Y CN 2741828 Y CN2741828 Y CN 2741828Y CN 200420027795 CN200420027795 CN 200420027795 CN 200420027795 U CN200420027795 U CN 200420027795U CN 2741828 Y CN2741828 Y CN 2741828Y
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- CN
- China
- Prior art keywords
- microprocessor
- circuit
- microphone
- power
- supply controller
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a vehicle alarm, relating to the technical field of the alarm, and comprising a power supply controller, a stabilized voltage supply, a microphone key detection circuit, a microphone, a panel key, a microprocessor, a sound volume control, a front pole amplifier, a power amplifier, and a loudspeaker. The power supply controller is input by the +12V direct current power supply, and the microphone key detection circuit is connected with the microprocessor. The microprocessor is provided with a circuit connected with the power supply controller, and a current sampling circuit and a sampling amplifying circuit are connected between the power amplifier and the microprocessor. When the vehicle alarm uses the microphone to call, other sounds operating in the loudspeaker can be automatically turned off. The use is easy, when the host machine generate short circuit, or the current exceed the limit value for the mismatching of the load, the circuit can be automatically turned off to guarantee the host machine is not burned out.
Description
Affiliated technical field
The utility model relates to a kind of siren horn, a kind of specifically automobile-used siren horn.
Background technology
At present employed siren horn exists following deficiency on the vehicle: when using microphone to propaganda directed to communicate, be the effect of the sound that guarantees to propaganda directed to communicate, could propaganda directed to communicate by microphone after needing to turn off other sound that loud speaker working earlier with hand, use inconvenience like this.Moreover when main frame is short-circuited or load does not match when causing the electric current value of overstepping the extreme limit, its main frame is burnt out easily.
Summary of the invention
The utility model provides a kind of and can turn off other sound that loud speaker is being worked automatically when using microphone to propaganda directed to communicate in order to overcome deficiency of the prior art, and is easy to use.When but main frame is short-circuited or does not match when causing the electric current value of overstepping the extreme limit automatic shutdown circuitry to guarantee that main frame is not burnt out because of load.
The utility model is achieved through the following technical solutions, a kind of automobile-used siren horn, comprise power-supply controller of electric, constant voltage power suspply, the detection of microphone button, microphone, panel button, microprocessor, volume control, head amplifier, power amplifier, loud speaker, described power-supply controller of electric is by the input of+12V direct supply, described microphone key press detecting circuit is connected with microprocessor, described microprocessor is provided with and power-supply controller of electric bonded assembly circuit, and described power amplifier is to being connected with current sampling and sampling amplification circuit between the microprocessor.
The utlity model has following beneficial effect: because the circuit that the microphone button detects is connected with microprocessor; when using microphone; after microprocessor is received signal; will automatically shut down other sound of working of selecting by front panel keys; again owing to be connected with current sampling and sampling amplification circuit between power amplifier and the microprocessor; when main frame is short-circuited or load does not match when causing the electric current value of overstepping the extreme limit; microprocessor will power cutoff; do not burnt out with the protection main frame, easy to use, safe.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is physical circuit figure of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.As shown in Figure 1, power-supply controller of electric+12V direct supply input, this power-supply controller of electric respectively with power stabilizer, head amplifier is connected with power amplifier, constant voltage power suspply detects with the microphone button respectively and is connected with microprocessor, the circuit of microphone detects with the microphone button and is connected, described microphone button detects to be received respectively in microprocessor and the volume control, described microprocessor respectively with power-supply controller of electric, the volume control linkage, volume control circuit is through head amplifier, power amplifier is to loud speaker, described power amplifier is to being connected with current sampling and sampling amplification circuit between the microprocessor, each button of front panel has circuit to be connected with microprocessor respectively, the automobile-used alarm circuit of above-mentioned composition.As shown in Figure 2, the core of microprocessor can be used chip microcontroller, as adopt 78P153S model micro controller system, the prior art of these schematic circuit diagram does not remake description, when using microphone, the microphone key press detecting circuit will be added to signal on the micro controller system of microprocessor, makes microprocessor turn-off the sound of being selected by panel button of working.Can use cond to realize with power amplifier bonded assembly current sampling, be connected current sampling to the sampling amplification circuit between the microprocessor and can use triode to realize.When main frame is short-circuited or load when not matching the electric current value of overstepping the extreme limit, after sampling amplification circuit was added to signal on the micro controller system of microprocessor, microprocessor passed to power-supply controller of electric with signal thereupon, makes its power cut-off, circuit auto-closing behind the trouble removal.Above-mentioned power-supply controller of electric can use relay to realize.
Claims (1)
1, a kind of automobile-used siren horn, comprise power-supply controller of electric, constant voltage power suspply, the detection of microphone button, microphone, panel button, microprocessor, volume control, head amplifier, power amplifier, loud speaker, described power-supply controller of electric is by the input of+12V direct supply, it is characterized in that: described microphone key press detecting circuit is connected with microprocessor, described microprocessor is provided with and power-supply controller of electric bonded assembly circuit, and described power amplifier is to being connected with current sampling and sampling amplification circuit between the microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420027795 CN2741828Y (en) | 2004-06-01 | 2004-06-01 | Vehicle alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420027795 CN2741828Y (en) | 2004-06-01 | 2004-06-01 | Vehicle alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2741828Y true CN2741828Y (en) | 2005-11-23 |
Family
ID=35477300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420027795 Expired - Fee Related CN2741828Y (en) | 2004-06-01 | 2004-06-01 | Vehicle alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2741828Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022121810A1 (en) * | 2020-12-09 | 2022-06-16 | 华为技术有限公司 | Detection system, t-box, and vehicle |
-
2004
- 2004-06-01 CN CN 200420027795 patent/CN2741828Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022121810A1 (en) * | 2020-12-09 | 2022-06-16 | 华为技术有限公司 | Detection system, t-box, and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051123 |