CN203854619U - Fuel theft alarm - Google Patents
Fuel theft alarm Download PDFInfo
- Publication number
- CN203854619U CN203854619U CN201420245748.3U CN201420245748U CN203854619U CN 203854619 U CN203854619 U CN 203854619U CN 201420245748 U CN201420245748 U CN 201420245748U CN 203854619 U CN203854619 U CN 203854619U
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- relay
- fuel
- key switch
- gear
- resistance
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Abstract
The utility model relates to a fuel theft alarm. The existing fuel theft alarm is provided with only a switch for manual selection of oil level signal modes. The fuel theft alarm comprises a single-chip microcomputer AT89S52, a relay (11) and an automobile key switch position-II (9); an alarm signal output end (7) of the single-chip microcomputer is connected with a drive circuit (6); a control signal detection end (8) of the single-chip microcomputer is connected with a cathode of a power source through a resistor (R4); the single-chip microcomputer is connected with a stabilized voltage power source (3); the stabilized voltage power source uses an anode (4) of an automobile batter power source; the relay is a single-pole double-throw relay switch; the anode of the stabilized voltage power source is connected with a resistor (R2); the resistor (R2) is connected with an oil level signal detection end (1) and an anode of a diode D1 (12); a cathode of the diode D1 is connected with a normally off contact of the relay; a moving contact of the relay is connected with an oil level sensor R1; a normally on contact of the relay is connected with an automobile fuel gauge (10). The fuel theft alarm is applicable to fuel theft alarms.
Description
technical field:
the utility model relates to a kind of hardware components of fuel burglar alarm.
background technology:
current fuel burglar alarm, be and detect oil level decline alarm in fuel tank, when mounted must be according to the mode of operation of the fuel sensor of different vehicle, its corresponding mode of operation of selecting properly, if selection mistake, to there is fuel tank and refuel alarm device and report to the police, oily problem of not reporting to the police when stolen.So conventionally the fuel level sensor in fuel tank need to be disassembled, do the experiment of reporting to the police and just can determine its mode of operation.So installation process is more loaded down with trivial details.Traditional vehicle fuel burglar alarm occurs in order to prevent flase alarm phenomenon, all joining remote controller uses, walk at vehicle launch, or switch-off and refuel time, driver will use the startups such as the remote controller of carrying at every turn or close annunciator, and have when remote controller disturbedly, or the situation such as et out of order and loss occurs, so make troubles to driver.
summary of the invention:
the purpose of this utility model is to provide a kind of fuel burglar alarm, refers in particular to wherein improved hardware components structure..
above-mentioned object realizes by following technical scheme:
a kind of fuel burglar alarm, its composition comprises: single chip computer AT 89S52, relay, automobile key switch II gear, the alarm signal output ends of described micro controller system is connected with driving circuit, the control signal test side of described micro controller system is connected with power cathode by resistance R 4, described micro controller system is connected with positive pole of stabilized voltage supply, described constant voltage power suspply uses the positive pole of automotive battery power supply, described relay is single-pole double throw (SPDT) relay switch, described positive pole of stabilized voltage supply is connected with resistance R 2, described resistance R 2 respectively with oil level signal test side, diode D1 is anodal to be connected, described D1 diode cathode is connected with relay normally closed contact, the moving contact of described relay is connected with fuel level sensor R1, described relay normally open contact is connected with automobile fuel gauge.
described fuel burglar alarm, described automobile key switch II gear uses the positive pole of automotive battery power supply, described automobile key switch II gear is connected with the electric end that obtains of relay, described automobile key switch II gear is connected with the control signal test side of micro controller system by resistance R 3, and described driving circuit is connected with buzzer phone.
the beneficial effects of the utility model:
1. the utility model utilizes fuel level sensor, and automobile key switch, realize automobile at switch-off, or extract under key state, start annunciator, automatically the variation of oil mass in monitoring fuel tank, in the time monitoring the signal that oil level rises or decline changes, all will send alerting signal, ban after manual selection oil level signal mode switch, detection alarm while not only possessing oil level decline, thereby also solve lawless person, by water filling in fuel tank, until rising, oil level steals oil from the mode of oil filling port oil spilling, the annunciator disadvantage such as can not report to the police, in the time that automobile starting is walked, can close annunciator, having solved driver forgets while closing annunciator, the flase alarm phenomenon occurring, when switch-off or after refueling, can start annunciator, solve the problem of impacting float generation flase alarm while oiling, so do not start and close annunciator with remote controller at needs.
the utility model, installs and use is simple, practicality is reliable, energy-conserving and environment-protective.
brief description of the drawings:
the electric connection structure schematic diagram that accompanying drawing 1 is this product.
the schematic diagram that accompanying drawing 2 is driving circuit.
detailed description of the invention:
embodiment 1:
a kind of fuel burglar alarm, its composition comprises: single chip computer AT 89S52 piece number 2, relay 11, automobile key switch II gear 9, the alarm signal output ends 7 of described micro controller system is connected with driving circuit 6, the control signal test side 8 of described micro controller system is connected with power cathode by resistance R 4, described micro controller system is connected with constant voltage power suspply 3, described constant voltage power suspply uses the positive pole 4 of automotive battery power supply, described relay is single-pole double throw (SPDT) relay switch, described positive pole of stabilized voltage supply is connected with resistance R 2, described resistance R 2 respectively with oil level signal test side 1, diode D1 12 is anodal to be connected, described D1 diode cathode is connected with relay normally closed contact, the moving contact of described relay is connected with fuel level sensor R1, described relay normally open contact is connected with automobile fuel gauge 10.
embodiment 2:
according to the fuel burglar alarm described in embodiment 1, described automobile key switch II gear uses the positive pole of automotive battery power supply, described automobile key switch II gear is connected with the electric end that obtains of relay, described automobile key switch II gear is connected with the control signal test side of micro controller system by resistance R 3, and described driving circuit is connected with buzzer phone 5.
Claims (2)
1. a fuel burglar alarm, its composition comprises: single chip computer AT 89S52, relay, automobile key switch II gear, it is characterized in that: the alarm signal output ends of described micro controller system is connected with driving circuit, the control signal test side of described micro controller system is connected with power cathode by resistance R 4, described micro controller system is connected with positive pole of stabilized voltage supply, described constant voltage power suspply uses the positive pole of automotive battery power supply, described relay is single-pole double throw (SPDT) relay switch, described positive pole of stabilized voltage supply is connected with resistance R 2, described resistance R 2 respectively with oil level signal test side, diode D1 is anodal to be connected, described D1 diode cathode is connected with relay normally closed contact, the moving contact of described relay is connected with fuel level sensor R1, described relay normally open contact is connected with automobile fuel gauge.
2. fuel burglar alarm according to claim 1, it is characterized in that: described automobile key switch II gear uses the positive pole of automotive battery power supply, described automobile key switch II gear is connected with the electric end that obtains of relay, described automobile key switch II gear is connected with the control signal test side of micro controller system by resistance R 3, and described driving circuit is connected with buzzer phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420245748.3U CN203854619U (en) | 2014-05-14 | 2014-05-14 | Fuel theft alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420245748.3U CN203854619U (en) | 2014-05-14 | 2014-05-14 | Fuel theft alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203854619U true CN203854619U (en) | 2014-10-01 |
Family
ID=51604489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420245748.3U Active CN203854619U (en) | 2014-05-14 | 2014-05-14 | Fuel theft alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203854619U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104986143A (en) * | 2015-06-25 | 2015-10-21 | 河南理工大学 | Anti-theft alarm device for automobile fuel oil |
-
2014
- 2014-05-14 CN CN201420245748.3U patent/CN203854619U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104986143A (en) * | 2015-06-25 | 2015-10-21 | 河南理工大学 | Anti-theft alarm device for automobile fuel oil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |