CN2224125Y - Monitor for light-fault of automobile - Google Patents

Abstract

The utility model discloses a fault monitoring device for an automobile signal lamp, particularly a monitoring device for the lamp light fault of automobiles. The utility model is composed of elements of a diode, a triode, an NOT gate, a bicolor light-emitting diode, etc. When the lamp filament of the signal lamp breaks off or has poor contact, no matter whether the signal lamp operates or the signal lamp stops, the bicolor light-emitting diode emits the lamp light which is preset as fault signals. If the signal lamp normally operates, the lamps with two colors in the bicolor light-emitting diode totally light. The monitoring device for the lamp light fault of automobiles has the advantages of simple structure, low cost, convenient installation, and visual display. The utility model can endlessly monitor the actual situation of the signal lamp.

Description

The car bulb fault monitor

The utility model relates to a kind of vehicle signal lamp fault detection monitor unit, particularly a kind of car bulb fault monitor.

At present, the part automobile has been installed the signal lamp failure monitoring device both at home and abroad, they have plenty of the employing decision circuit, the employing reed switch circuit that has, use this device, make automobile driver's inspection of needn't getting off, just can in running car or docking process, grasp the service condition of each position signal lamp of automobile timely and accurately, thereby alleviated driver's labour intensity to a certain extent, reduced or remitted the generation of traffic accident again, but simultaneously, it also exists some shortcomings: what have only could monitor out this road signal lamp whether fault is arranged when the connection signal light switch, after cutting out, switch can't monitor, and existing uninterrupted monitor signal lamp system circuit complexity, the cost height, the fault rate height.No matter which kind of device all exists complexity is installed, lay man can not be installed, and the outside lead layout is unreasonable, shows shortcomings such as not directly perceived.

The purpose of this utility model will overcome above-mentioned shortcoming exactly, and a kind of uninterrupted car bulb fault monitor of simple in structure, with low cost, easy for installation, intuitive display is provided.

For achieving the above object, the utility model adopts following technical scheme: diode on the front end serial connection of signal lamp, two lines are drawn at the diode two ends, an emitting stage that is connected on triode, the other end is connected on the base stage of triode, it also has a not gate, the input end of this not gate is connected on the line between diode and the signal lamp, the shared negative pole of dual color light emitting diode (is example with the red and green color light emitting diode) is connected on the mouth of not gate by a current-limiting resistance, the lead-in wire that glows of dichromatic LED is received the collecting electrode of triode, but the lead-in wire of the green light of dual color light emitting diode is directly received on the power supply, and cross-over connection has a high value resistor between power supply and not gate input end.When the automobile total power switch is connected, and during signal lamp power supply access failure, if signal lamp is intact, filament resistance is very little, be equivalent to the direct ground connection of not gate, therefore the not gate input end is an active potential, non-gate output terminal is a high potential, this moment, the red and green color light emitting diode was not luminous, if filament has broken or the signal lamp bad contact, this moment, power supply provided a high potential for the not gate input end through high value resistor, and corresponding non-gate output terminal is an active potential, this moment, the green light of dichromatic LED was bright, showed black light.When the connection signal light switch, electric current makes signal lamp luminous through diode, line is a high potential between signal lamp and diode at this moment, the mouth of not gate is exactly an active potential so, because certain pressure drop is arranged during the diode conducting, thereby make the triode also can conducting, receive on the non-gate output terminal by current-limiting resistance because of the shared negative pole of dual color light emitting diode again, so the traffic lights of double-colored diode are all bright, send out orange-colored light, show that signal lamp is working properly, if this moment, filament broke, not conducting of diode, triode can conducting yet, and at this moment the red light of double-colored diode does not work, but at this moment because the high potential that high value resistor provides makes non-gate output terminal is active potential, at this moment green light is still just bright, shows black light.Comprehensive these several situations if the dual color light emitting diode is sent out orange-colored light, show that signal lamp is just in normal operation, the bright black light that all shows of green light whenever, if behind the connection signal light switch, respective leds does not work, show that this road signal lamp circuit has fault.

The demonstration of each signal lamp is all installed concentratedly on display panel with the dual color light emitting diode on the automobile, and the corresponding arrangement of actual position with each signal lamp, display panel is assemblied in the operator's compartment, like this when certain black light, just but its position on display panel of root a tree name knows that very intuitively which signal lamp is out of order.

Adopt the automotive lamp fault monitor of this structure, have advantages such as simple in structure, simple installation, intuitive display, and its truth of displaing lamp incessantly.

Below in conjunction with accompanying drawing the utility model is described in detail.

Fig. 1 is schematic circuit diagram of the present utility model.

Fig. 2 is a scheme of installation of the present utility model.

Each signal lamp all adopts independently its service condition of circuit monitors, and principle is identical, is that example illustrates its principle of work below with the turn lamp, left front.

With reference to Fig. 1.Go up diode (15) cutting off series connection in the former supply line of front end (17) of signal lamp (2), the D end of diode links to each other with the P end of triode (22) with lead (23), and the G end of diode links to each other with the M end of triode (22) with lead (24).It has a not gate (21), the input end A of not gate is connected on the lead (23), the mouth B of not gate is connected on the common negative electricity level F end of red and green color light emitting diode (2 ') by current-limiting resistance (20), the lead-in wire C that it can glow terminates at the N end of triode (22), directly on power supply+Vcc, but cross-over connection has high value resistor (19) to the lead-in wire E of green light between the input end A of power supply+Vcc and not gate (21).

This car bulb fault monitor is work like this, when the automobile general supply is connected, during signal lamp power supply access failure, if signal lamp (2) is in working order, because of its filament resistance very low, be equivalent to direct ground connection not gate input end A, therefore the input end A of not gate (21) is an active potential, the mouth B of not gate is a high potential just, red and green color light emitting diode (2) is not luminous, if filament has broken or the signal lamp bad contact, high value resistor (19) provides a high potential just for the A end of not gate, and corresponding not gate B end is exactly an active potential, the E of red and green color light emitting diode (2 '), F rectifies to conducting, wherein electric current is held through the B that current-limiting resistance (20) flows to not gate, and this moment, green light was bright, again because the switch access failure of signal lamp this moment (2), therefore not conducting of triode (22), the red light of dual color light emitting diode does not work, and this moment, a dual color light emitting diode green light showed black light.

When the connection signal light switch, to the signal lamp power supply, this moment, the D point was a high potential to electric current through diode (15), and the input end A point of not gate also is a high potential, and the mouth B point of not gate is exactly an active potential, and the E of dual color light emitting diode (2 '), F end conducting green light is bright.Because diode (15) has certain pressure drop when conducting, make also conducting smoothly of triode (22), the C of dual color light emitting diode, the conducting of F end glows, the red-green glow of dual color light emitting diode mix become orange, send out orange-colored light and show that signal lamp is working properly, if at this moment the filament of signal lamp has broken or bad contact, not conducting of diode (15), triode (22) can not conducting, dual color light emitting diode ruddiness disappears, this moment is because the high potential that high low resistance (19) provides for the not gate input end, and dual color light emitting diode (2 ') is sent out still can green light, shows black light during green light.

Comprehensive these several situations, the dual color light emitting diode is sent out orange-colored light, shows that signal lamp is just in normal operation, the bright black light that all shows of green light whenever, if behind the connection signal light switch, corresponding dual color light emitting diode does not work, and shows that this road signal lamp circuit has fault.

With reference to Fig. 2.Lamp (1) is an automobile left side lampet, lamp (2) turn lamp, left front, and lamp (3) is the left side steering indicating light, lamp (4) is left back steering indicating light, and lamp (5) is a left tail lamp, and lamp (6) is left stoplight stop lamp, lamp (7) is left backing-up lamp, lamp (8) is right backing-up lamp, and lamp (9) is right stoplight stop lamp, and lamp (10) is a right tail lamp, lamp (11) is left back steering indicating light, lamp (12) is the right hand steering lamp, and lamp (13) is a right front turn lamp, and lamp (14) is right lampet.The installation that is installed as each lamp Monitoring Line of example explanation with turn lamp, left front (2), in the former supply line (17) of lamp (2) front end, cut off (shown in dotted line), diode in the series connection (15), the two ends of diode are drawn two lines (23), (24) and are guided to always and be positioned at frame and sail the display panel of chamber (16), each lamp all is to install like this, it is to be noted just that lead-in wire that frame is sailed chamber each signal lamp of fwd draws with a unified wire harness connects, and the lead-in wire that frame is sailed each signal lamp of back, chamber draws with the unified wire harness of another root and connects.

Be used for showing that the dual color light emitting diode of each signal lamp service condition all installs concentratedly on display panel (16), and corresponding arrangement of actual position by each signal lamp, the dual color light emitting diode (2 ') that for example monitors turn lamp, left front (2) service condition is positioned at the anterior leftmost position of display panel (16), nestle up dichromatic LED (2 ') same row, what be positioned at its right side is the dichromatic LED (1 ') that monitors left lampet (1).Such wiring topology rationally, intuitive display, low, the simple installation of fault rate.

Claims (2)

1, a kind of car bulb fault monitor, it comprises signal lamp (2), dichromatic LED (2 '), display panel (16), aerotron (22), it is characterized in that: it is in series with diode (15) on signal lamp (2) front end lead-in wire (17), the D end of diode (15) links to each other with the P end of triode (22) by lead (23), the G end of diode (15) links to each other with the M end of triode (22) by lead (24), and the N end of triode (22) links to each other with the C end of dual color light emitting diode (2 '); The E of dichromatic LED (2 ') terminates on the power supply, is connected on the mouth B of not gate (21) behind its shared negative pole F end polyphone upper flow resistance (20), and the input end A of not gate (21) is connected on the lead (23); High value resistor (19) one ends are connected on the power supply, and the other end is connected on the input end A of not gate (21).

2, the described car bulb fault monitor of root a tree name claim 1, it is characterized in that: the demonstration of each signal lamp is all installed concentratedly on display panel (16) with dichromatic LED, and with the corresponding arrangement of actual position of signal lamp.

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