CN202353901U - Fault detection circuit of automobile braking lamp - Google Patents
Fault detection circuit of automobile braking lamp Download PDFInfo
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- CN202353901U CN202353901U CN2011204618787U CN201120461878U CN202353901U CN 202353901 U CN202353901 U CN 202353901U CN 2011204618787 U CN2011204618787 U CN 2011204618787U CN 201120461878 U CN201120461878 U CN 201120461878U CN 202353901 U CN202353901 U CN 202353901U
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Abstract
The utility model relates to a detection circuit of automobile accessories. A fault detection circuit of an automobile braking lamp well solves the problem that hardware in the prior art is high in cost. The main point of the technical scheme is that the fault detection circuit comprises an ignition switch S1, a resistor R1 and a resistor R2. A storage battery is respectively and electrically connected with a first breakover end of the resistor R1 and a first breakover end of the resistor R2 through the ignition switch S1, a second breakover end of the resistor R1 is electrically connected with a negative electrode of the storage battery through a first brake lamp L1, the second breakover end of the resistor R1 is further electrically connected with the input end of an L1 indicator lamp circuit through a first not-gate circuit in a six-not-gate circuit, a second breakover end of the resistor R2 is electrically connected with the negative electrode of the storage battery through a second brake lamp L2, and the second breakover end of the resistor R2 is further electrically connected with the input end of an L2 indicator lamp circuit through a second not-gate circuit in the six-not-gate circuit. The fault detection circuit is simple in structure, adopts an acousto-optic caution mode, and is good in caution mode.
Description
Technical field
The utility model relates to a kind of auto parts machinery testing circuit, particularly a kind of testing circuit of detection automobile brake lamp failure simple in structure.
Background technology
At present, the quality of automobile brake lamp directly affects the safety traffic of vehicle.And at present the fault detect of automobile brake lamp has all been adopted the method for automatic detection alarm, but on circuit design, often adopted comparatively complicated method; Such as the pressure drop on the test Brake lamp, carry out analyzing and processing through control chip then, the processing of reporting to the police then; During this type of technology implementation; Technology maturation, but need that hardware is more, cost is higher, and circuit structure is complicated.
Chinese patent notification number CN2806240Y; August 16 2006 day for announcing; The automatic detection alarm device of a kind of autobulb fault is disclosed; Comprise housing, debug switch, debugging knob and three leads of drawing from the housing wire hole; It is provided with bulb power dropping resistor R1, resistance series connection pressure sampling circuit, voltage comparator circuit, execution relay from lock control circuit, self-timing detection control circuit, bulb malfunction warning circuit, power supply stabilization circuit and power supply regulator circuit; Circuit connecting mode is: the positive electricity incoming line of the input termination autobulb of bulb power dropping resistor R1; The input of the output connecting resistance series connection pressure sampling circuit of bulb power dropping resistor R1 and the positive terminal of autobulb, the output of resistance series connection pressure sampling circuit connects the input of voltage comparator circuit, and the output of voltage comparator circuit connects carries out relay from lock control circuit; The normally opened contact of carrying out relay is connected in parallel on the two ends of bulb power reduction voltage circuit; Carry out relay and behind isolating diode, be connected to self-timing detection control circuit, self-timing detects the normal contact point of the control relay in the control circuit and connects with the coil of two execution relays, and the bulb malfunction warning circuit connects the normally opened contact of an execution relay; The input of power supply stabilization circuit connects the middle-end of the normal contact point of an execution relay; The output of power supply stabilization circuit connects the middle-end of the normal contact point of an execution relay, and the input of power supply regulator circuit connects the middle-end of the normal contact point of an execution relay, and the output of power supply regulator circuit connects voltage comparator circuit.This technical scheme, structure are comparatively complicated, and energy consumption is more, detect automatically for simple Brake lamp, and cost is too high, and this technical scheme only adopts single warning form simultaneously, and the caution effect is relatively poor.
Summary of the invention
It is complicated that the purpose of the utility model is to solve in the above-mentioned prior art circuit structure, and the hardware cost problem of higher provides a kind of testing circuit of detection automobile brake lamp failure of simple in structure, good warning effect.
The utility model solves the technical scheme that its technical problem adopted: a kind of automobile brake lamp failure detector circuit; By storage battery power supply; Comprise audio oscillator circuit, six not circuits, the first Brake lamp L1, the second Brake lamp L2, L1 indicator light circuit and L2 indicator light circuit; Audio oscillator circuit is electrically connected with six not circuits; Described automobile brake lamp failure detector circuit comprises ignition switch S1, resistance R 1 and resistance R 2; Storage battery is electrically connected with first conduction terminal of resistance R 1 and first conduction terminal of resistance R 2 respectively through ignition switch S1; Second conduction terminal of resistance R 1 is connected with the negative electricity of storage battery through the first Brake lamp L1; Second conduction terminal of resistance R 1 also is electrically connected with the input of L1 indicator light circuit through first not circuit in six not circuits, and second conduction terminal of resistance R 2 is connected with the negative electricity of storage battery through the second Brake lamp L2, and second conduction terminal of resistance R 2 also is electrically connected with the input of L2 indicator light circuit through second not circuit in six not circuits.Be provided with like this, resistance R 1, resistance R 2, Brake lamp L1 and L2, ignition switch S1 and storage battery BT1 form power circuit, but because the resistance of resistance R 1, resistance R 2 is all very big; Thereby be quite faint through the electric current of Brake lamp L1, Brake lamp L2; So Brake lamp L1, Brake lamp L2 do not work,, make that the second not circuit input in six not circuits is a low level because the filament resistance of Brake lamp L1 and Brake lamp L2 is all very little; The first not circuit input in six not circuits is a low level; When Brake lamp L1 broke off, the first not circuit input in six not circuits was a high level, when Brake lamp L2 breaks off; The second not circuit input in six not circuits is a high level; Adopted simple form can realize Brake lamp L1, exported signal alarm when Brake lamp L2 opens circuit, the electric elements that here adopt are very simple, and cost reduces greatly.
As preferably, described six not circuits adopt the CD4069 chip.Be provided with like this, the CD4069 chip is six not gate integrated chips.
As preferably; Described L1 indicator light circuit comprises resistance R 4, LED 1 and LED 2; LED 1 and LED 2 parallel connected in reverse phase; The anode of LED 1 is electrically connected through the output of first not gate in resistance R 4 and six not circuits and the input of the 3rd not gate, and the output of the 3rd not gate in the negative electrode of LED 1 and six not circuits is electrically connected.Be provided with like this; If the first not circuit input in six not circuits is a low level, then LED 1 conducting is luminous, if the first not circuit input in six not circuits is a high level; Then LED 2 conductings are luminous, and Brake lamp L1 open circuit fault has been described.
As preferably; Described L2 indicator light circuit comprises resistance R 3, LED 3 and LED 4; LED 3 and LED 4 parallel connected in reverse phase; The anode of LED 3 is electrically connected through the output of first not gate in resistance R 4 and six not circuits and the input of the 3rd not gate, and the output of the 3rd not gate in the negative electrode of LED 3 and six not circuits is electrically connected.Be provided with like this; If the second not circuit input in six not circuits is a low level, then LED 3 conductings are luminous, if the second not circuit input in six not circuits is a high level; Then LED 4 conductings are luminous, and Brake lamp L2 open circuit fault has been described.
As preferably; Described automobile brake lamp failure detector circuit also comprises resistance R 5, diode D1, diode D2, diode D3, diode D4 and brake switch S2; The positive pole of storage battery is electrically connected with the anode of diode D3 and the anode of diode D4 through ignition switch S1, brake switch S2; The anode of diode D3 is electrically connected with second conduction terminal of resistance R 2; The anode of diode D3 also is connected with the cathodic electricity of diode D2; The anode of diode D2 also is electrically connected with the anode of diode D1, the anode of diode D2 also with six not circuits in the input of the 6th not gate be electrically connected, the anode of diode D4 also is connected with the cathodic electricity of diode D1; The anode of diode D1 also with six not circuits in the input of the 6th not gate be electrically connected, the input of the 6th not gate in six not circuits is electrically connected through the output of the 6th not gate in resistance R 5 and six not circuits.If brake switch S2 connects, LED 1 will end with LED 3, and LED 2 is also luminous with conducting with LED 4.
As preferably; Described audio oscillator circuit comprises resistance R 6, capacitor C 1 and alarm; The output of the 6th not gate in said six not circuits is connected with the negative electricity of storage battery through resistance R 6; The output of the 6th not gate in six not circuits also with six not circuits in the input of the 5th not gate be electrically connected, the output of the 5th not gate is connected with the negative electricity of storage battery with alarm through capacitor C 1 respectively.If brake switch S2 connects, LED 1 will end with LED 3, and LED 2 is also luminous with conducting with LED 4, and alarm is sounded simultaneously, otherwise, explain that braking light switch S2 has fault or circuit that fault is arranged; Under the situation that braking light switch S2 breaks off, have only as Brake lamp L1, when Brake lamp L2 breaks down, can make the alarm sounding, on the contrary, as long as Brake lamp L1 or Brake lamp L2 are intact, alarm can not sounded.
The beneficial effect of the utility model is: the utility model is simple in structure, adopts two kinds of warning ways of acousto-optic, good warning effect.
Description of drawings
Fig. 1 is a kind of circuit theory diagrams of the utility model.
Embodiment
Below through specific embodiment, and combine accompanying drawing, the technical scheme of the utility model is further specified.
Embodiment:
A kind of automobile brake lamp failure detector circuit (referring to accompanying drawing 1); By magnitude of voltage is the storage battery power supply of 12V; Six not circuits, the first Brake lamp L1, the second Brake lamp L2, L1 indicator light circuit and the L2 indicator light circuit that comprise ignition switch S1, resistance R 1, resistance R 2, audio oscillator circuit, employing CD4069 chip; Be integrated with six not circuits in the CD4069 chip, wherein the input of first not gate is that pin 13, output are that the input of pin 12, the second not gates is that pin 1, output are pin 2; The input of the 3rd not gate is that pin 11, output are pin 10; The input of the 4th not gate is that pin 3, output are that the input of pin 4, the five not gates is that pin 9, output are that the input of pin 8, the first not gates is that pin 5, output are pin 6; Audio oscillator circuit comprises resistance R 6, capacitor C 1 and alarm; The output of the 6th not gate in the CD4069 chip is connected with the negative electricity of storage battery through resistance R 6, the output of the 6th not gate in the CD4069 chip also with the CD4069 chip in the input of the 5th not gate be electrically connected, the output of the 5th not gate passes through capacitor C 1 respectively and is connected with the negative electricity of storage battery with alarm.Storage battery is electrically connected with first conduction terminal of resistance R 1 and first conduction terminal of resistance R 2 respectively through ignition switch S1; Second conduction terminal of resistance R 1 is connected with the negative electricity of storage battery through the first Brake lamp L1; Second conduction terminal of resistance R 1 also is electrically connected with the input of L1 indicator light circuit through first not circuit in the CD4069 chip; Second conduction terminal of resistance R 2 is connected with the negative electricity of storage battery through the second Brake lamp L2, and second conduction terminal of resistance R 2 also is electrically connected with the input of L2 indicator light circuit through second not circuit in the CD4069 chip.The resistance of resistance R 1 and resistance R 2 is 2.2M ohm; The resistance value of Brake lamp L1 and Brake lamp L2 can be ignored with respect to resistance R 1 and resistance R 2; The L1 indicator light circuit comprises resistance R 4, LED 1 and LED 2; LED 1 and LED 2 parallel connected in reverse phase; The anode of LED 1 is electrically connected through the output of first not gate in resistance R 4 and the CD4069 chip and the input of the 3rd not gate, and the output of the 3rd not gate in the negative electrode of LED 1 and the CD4069 chip is electrically connected.The L2 indicator light circuit comprises resistance R 3, LED 3 and LED 4; LED 3 and LED 4 parallel connected in reverse phase; The anode of LED 3 is electrically connected through the output of first not gate in resistance R 4 and the CD4069 chip and the input of the 3rd not gate, and the output of the 3rd not gate in the negative electrode of LED 3 and the CD4069 chip is electrically connected.The automobile brake lamp failure detector circuit also comprises resistance R 5, diode D1, diode D2, diode D3, diode D4 and brake switch S2; The positive pole of storage battery is electrically connected with the anode of diode D3 and the anode of diode D4 through ignition switch S1, brake switch S2; The anode of diode D3 is electrically connected with second conduction terminal of resistance R 2; The anode of diode D3 also is connected with the cathodic electricity of diode D2; The anode of diode D2 also with the CD4069 chip in the input of the 6th not gate be electrically connected; The anode of diode D4 also is connected with the cathodic electricity of diode D1, the anode of diode D1 also with the CD4069 chip in the input of the 6th not gate be electrically connected, the input of the 6th not gate in the CD4069 chip is electrically connected through the output of the 6th not gate in resistance R 5 and the CD4069 chip.In the present embodiment, LED 1 is a green LED with LED 2, and LED 3 is a red light emitting diodes with LED 4.
Present embodiment in use; Resistance R 1, resistance R 2, Brake lamp L1 and L2, ignition switch S1 and storage battery BT1 form power circuit in the ordinary course of things; But because the resistance of resistance R 1, resistance R 2 is all very big; Thereby be quite faint through the electric current of Brake lamp L1, Brake lamp L2, so Brake lamp L1, Brake lamp L2 do not work, alarm is sounding not also.Because the filament resistance of Brake lamp L1, Brake lamp L2 is all very little, makes 1 pin of CD4069 chip and 13 pin all be low level, then 4 pin of CD4069 chip and 10 pin are low level, so LED 1, LED3 conducting sends green light.When Brake lamp L1 broke off, positive supply was added on 13 pin of CD4069 chip through R1, made 10 pin of CD4069 chip export high level, so LED 1 ends, LED 2 conductings are warned light and become red light by green light; In like manner, when Brake lamp L2 broke off, LED3 ended, the LED4 conducting, and caution light also becomes red light by green light.If brake switch S2 connects; LED 1 will end with LED 3, and LED 2 and LED 4 are with conducting and send red light, and alarm is sounded simultaneously; Otherwise, explain that braking light switch S2 has fault or circuit that fault is arranged.Under the situation that braking light switch S2 breaks off, have only as Brake lamp L1, when Brake lamp L2 breaks down, can make the alarm sounding.On the contrary, as long as Brake lamp L1 or any lamp of Brake lamp L2 are intact, alarm all can not sounded.
Above-described embodiment is a kind of preferable scheme of the present invention, is not that the present invention is done any pro forma restriction, under the prerequisite that does not exceed the technical scheme that claim puts down in writing, also has other variant and remodeling.
Claims (6)
1. automobile brake lamp failure detector circuit; By storage battery power supply; Comprise audio oscillator circuit, six not circuits, the first Brake lamp L1, the second Brake lamp L2, L1 indicator light circuit and L2 indicator light circuit; Audio oscillator circuit is electrically connected with six not circuits; It is characterized in that: described automobile brake lamp failure detector circuit comprises ignition switch S1, resistance R 1 and resistance R 2; Storage battery is electrically connected with first conduction terminal of resistance R 1 and first conduction terminal of resistance R 2 respectively through ignition switch S1, and second conduction terminal of resistance R 1 is connected with the negative electricity of storage battery through the first Brake lamp L1, and second conduction terminal of resistance R 1 also is electrically connected with the input of L1 indicator light circuit through first not circuit in six not circuits; Second conduction terminal of resistance R 2 is connected with the negative electricity of storage battery through the second Brake lamp L2, and second conduction terminal of resistance R 2 also is electrically connected with the input of L2 indicator light circuit through second not circuit in six not circuits.
2. automobile brake lamp failure detector circuit according to claim 1 is characterized in that: described six not circuits adopt the CD4069 chip.
3. automobile brake lamp failure detector circuit according to claim 2; It is characterized in that: described L1 indicator light circuit comprises resistance R 4, LED 1 and LED 2; LED 1 and LED 2 parallel connected in reverse phase; The anode of LED 1 is electrically connected through the output of first not gate in resistance R 4 and six not circuits and the input of the 3rd not gate, and the output of the 3rd not gate in the negative electrode of LED 1 and six not circuits is electrically connected.
4. automobile brake lamp failure detector circuit according to claim 2; It is characterized in that: described L2 indicator light circuit comprises resistance R 3, LED 3 and LED 4; LED 3 and LED 4 parallel connected in reverse phase; The anode of LED 3 is electrically connected through the output of first not gate in resistance R 4 and six not circuits and the input of the 3rd not gate, and the output of the 3rd not gate in the negative electrode of LED 3 and six not circuits is electrically connected.
5. automobile brake lamp failure detector circuit according to claim 2; It is characterized in that: described automobile brake lamp failure detector circuit also comprises resistance R 5, diode D1, diode D2, diode D3, diode D4 and brake switch S2; The positive pole of storage battery is electrically connected with the anode of diode D3 and the anode of diode D4 through ignition switch S1, brake switch S2; The anode of diode D3 is electrically connected with second conduction terminal of resistance R 2; The anode of diode D3 also is connected with the cathodic electricity of diode D2; The anode of diode D2 also is electrically connected with the anode of diode D1, the anode of diode D2 also with six not circuits in the input of the 6th not gate be electrically connected, the anode of diode D4 also is connected with the cathodic electricity of diode D1; The anode of diode D1 also with six not circuits in the input of the 6th not gate be electrically connected, the input of the 6th not gate in six not circuits is electrically connected through the output of the 6th not gate in resistance R 5 and six not circuits.
6. according to claim 1 or 2 or 3 or 4 or 5 described automobile brake lamp failure detector circuits; It is characterized in that: described audio oscillator circuit comprises resistance R 6, capacitor C 1 and alarm; The output of the 6th not gate in said six not circuits is connected with the negative electricity of storage battery through resistance R 6; The output of the 6th not gate in six not circuits also with six not circuits in the input of the 5th not gate be electrically connected, the output of the 5th not gate is connected with the negative electricity of storage battery with alarm through capacitor C 1 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204618787U CN202353901U (en) | 2011-11-21 | 2011-11-21 | Fault detection circuit of automobile braking lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204618787U CN202353901U (en) | 2011-11-21 | 2011-11-21 | Fault detection circuit of automobile braking lamp |
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| Publication Number | Publication Date |
|---|---|
| CN202353901U true CN202353901U (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204618787U Expired - Lifetime CN202353901U (en) | 2011-11-21 | 2011-11-21 | Fault detection circuit of automobile braking lamp |
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| CN (1) | CN202353901U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103895515A (en) * | 2013-12-25 | 2014-07-02 | 浙江吉利控股集团有限公司 | Method and device for brake light failure detection and maximum speed limiting |
-
2011
- 2011-11-21 CN CN2011204618787U patent/CN202353901U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103895515A (en) * | 2013-12-25 | 2014-07-02 | 浙江吉利控股集团有限公司 | Method and device for brake light failure detection and maximum speed limiting |
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| GR01 | Patent grant | ||
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Granted publication date: 20120725 |