CN110225626B - Indoor lamp controller for vehicle and vehicle with indoor lamp controller - Google Patents
Indoor lamp controller for vehicle and vehicle with indoor lamp controller Download PDFInfo
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- CN110225626B CN110225626B CN201910614953.XA CN201910614953A CN110225626B CN 110225626 B CN110225626 B CN 110225626B CN 201910614953 A CN201910614953 A CN 201910614953A CN 110225626 B CN110225626 B CN 110225626B
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 33
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- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 description 3
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- 238000004891 communication Methods 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
- Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
Abstract
The invention discloses an indoor lamp controller for a vehicle and a vehicle with the indoor lamp controller, wherein the indoor lamp controller for the vehicle comprises a power supply module, a bulb control module coupled with the power supply module, a triggering module coupled with the bulb control module, a plurality of bulbs and LED lamps electrically connected with the control module; the control module comprises a bulb control circuit, a bulb driving circuit electrically connected with the bulb control circuit, an LED driving circuit connected with the bulb control circuit in parallel, and a PWM control circuit connected with the bulb driving circuit; the PWM control circuit is used for controlling the bulbs to gradually turn on or off, and the number of the bulb control circuit and the number of the bulb driving circuits are several and are used for respectively controlling the bulbs; the number of the LED driving circuits is several, and the LED driving circuits are used for respectively controlling the LED lamps; the trigger module adopts an independent channel circuit or a gate mode to control the gradual on or gradual off of the two bulbs, and is provided with a plurality of carbon film switches.
Description
Technical Field
The invention relates to the field of automobile electronics, in particular to an indoor lamp controller for a vehicle and the vehicle with the indoor lamp controller.
Background
With the development of automobiles, the electronic and intelligent of the whole automobile is continuously improved, the electronic environment of the whole automobile is more and more complex, the requirements of automobile terminal users on the product quality are more and more strict, and the updating and upgrading of the traditional indoor lamp controllers for automobiles are becoming a trend. The traditional product has high material cost, complex production process, relatively low yield and relatively low reliability. The main stream designs on the market at present, such as patent documents CN201510362314.0, CN201510993094.1, etc., all have the following problems:
1) The singlechip and software are required to control various lamps, the cost is relatively high, and the manufacture is relatively complex;
2) Field coupling tests of +/-15KV and +/-25KV that are not effective against ESD in ISO 10605;
3) Failure to effectively resist the latest version of EMI (ISO 7637)) and electrical performance testing (ISO 16750);
4) The overall leakage current is too high, exceeding 150uA;
5) When a hand touches a touch circuit, particularly a connector input circuit, the bulb is easy to be accidentally triggered to be lightened, namely the bulb is influenced by human body charges (not ESD) and the like.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
For the above reasons, the applicant proposes an indoor lamp controller for a vehicle and a vehicle having the same, aiming at solving the following problems: the on-off of the LEDs and the bulbs is controlled by adopting an electronic element, a carbon film switch and a mechanical switch;
the special low-cost trigger circuit is adopted to independently control the two bulbs, so that the interference of complex electronic environments on automobiles on the bulbs and the interference of switching noise can be effectively resisted, the bulbs can be reliably turned on and off, and the bulbs can reliably work 100% under the wide voltage range of 9-16V;
an independent channel circuit or a gate mode is adopted to control the gradual brightness and the gradual extinction of the two bulbs;
the special low-cost circuit is adopted to protect the EMI of the power port, so that interference can be effectively resisted, and a better functional state can be maintained.
Disclosure of Invention
In order to meet the above-mentioned requirements, a first object of the present invention is to provide an indoor lamp controller for a vehicle.
A second object of the present invention is to provide a vehicle having an indoor lamp controller.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the indoor lamp controller for the vehicle comprises a power supply module, a bulb control module, a triggering module, a plurality of bulbs and LED lamps, wherein the bulb control module is coupled with the power supply module;
the control module comprises a bulb control circuit, a bulb driving circuit electrically connected with the bulb control circuit, an LED driving circuit connected with the bulb control circuit in parallel, and a PWM control circuit connected with the bulb driving circuit; the PWM control circuit is used for controlling the bulbs to gradually turn on or off, and the number of the bulb control circuit and the number of the bulb driving circuits are several and are used for respectively controlling the bulbs; the number of the LED driving circuits is several, and the LED driving circuits are used for respectively controlling the LED lamps;
the triggering module adopts an independent channel circuit or a door mode to control the gradual on or gradual off of the bulb, and is provided with a plurality of carbon film switches which are used for controlling the bulb to work; the bulb is also connected with a mechanical switch, and the mechanical switch is used for controlling the bulb to be on or off or simultaneously on or off.
The triggering module comprises a carbon film switch rising edge triggering circuit, wherein the carbon film switch rising edge triggering circuit is provided with a carbon film switch, a first capacitor connected in series with the carbon film switch, a first grounding resistor with one end connected to a node between the first capacitor and the carbon film switch, a magnetic bead connected in series with the first capacitor, a second resistor, a third grounding resistor connected with the tail end of the second resistor, and a second grounding capacitor connected in parallel with the third grounding resistor; the first grounding resistor, the first capacitor, the magnetic beads, the second resistor, the third grounding resistor and the second grounding capacitor form a trigger edge pulse circuit.
The trigger module comprises a double-D trigger circuit with two groups of setting and resetting, wherein the double-D trigger circuit with two groups of setting and resetting is provided with a 74AHC74PW-Q100J chip, a tenth pin of the 74AHC74PW-Q100J chip is connected with a fourth resistor, a sixth pin is sequentially connected with a fifth resistor and a third grounding capacitor, and a second pin is connected with a node between the fifth resistor and the third grounding capacitor; the fourth resistor, the third grounding capacitor, the sixth pin, the fifth pin and the second pin form a first D trigger circuit; the eighth pin of the 74AHC74PW-Q100J chip is connected with a sixth resistor and a fourth grounding capacitor, the twelve pins are connected with a node between the sixth resistor and the fourth grounding capacitor, the ninth pin is connected with a fifth grounding capacitor, and the sixth resistor, the fourth grounding capacitor, the eighth pin, the ninth pin and the twelfth pin form a second D trigger circuit;
the first pin, the fourth pin, the tenth pin, the thirteenth pin and the peripheral device of the 74AHC74PW-Q100J type chip form 2 groups of set reset circuits.
The further technical scheme is that the PWM control circuit is connected with a PWM inverter circuit, and the PWM inverter circuit is used for inverting the phase of an input signal of the PWM control circuit so as to realize the control of gradually lighting or gradually lighting out of the bulb.
The bulb driving circuit comprises an OR gate circuit formed by connecting two patch switch diodes in parallel.
The power supply module comprises a power supply conversion circuit, wherein the power supply conversion circuit is provided with an S-19212B50H-E6T1U type chip.
The power module further comprises a power input port protection circuit.
The mechanical switch is a boat-shaped switch.
The further technical scheme is that the number of the bulbs is 2, the number of the carbon film switches is 2, and the number of the mechanical switches is 1; the carbon film switch is used for respectively and independently controlling 2 bulbs, and the mechanical switch is used for simultaneously controlling 2 bulbs.
The invention also discloses a vehicle with the indoor lamp controller, which comprises a vehicle main body and the indoor lamp controller arranged on the vehicle main body; the indoor lamp controller is any one of the above-described indoor lamp controllers for vehicles.
Compared with the prior art, the invention has the beneficial effects that: the indoor lamp controller adopting the scheme has the advantages that the controller is provided with the carbon film switch rising edge trigger circuit and the double-D trigger circuit with two groups of setting and resetting, the control of the bulb is realized by combining the trigger module, so that the bulb can be gradually lightened or gradually extinguished, meanwhile, the circuit structure has the advantages of low cost, low standby power consumption, high reliability of resisting the automobile electronic environment, low requirements on the structure, simple device, no software and the like, the controller is suitable for vehicles, the standby power consumption of two chips in the circuit is not more than 50uA, and the power consumption of other discrete devices is within 50uA when not working, so that the overall power consumption of the controller is controlled to be 110uA, which is far lower than that of conventional products, and a large amount of energy can be saved.
The invention is further described below with reference to the drawings and specific embodiments.
Drawings
FIG. 1 is a schematic circuit diagram of a carbon film switch rising edge trigger circuit of a vehicle interior light controller according to an embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of one embodiment of a dual D flip-flop circuit with two sets of set-reset for a vehicle interior light controller according to the present invention;
FIG. 3 is a schematic circuit diagram of one embodiment of a PWM inverter circuit of a vehicle interior light controller according to the present invention;
FIG. 4 is a schematic circuit diagram of a lamp driving circuit of a vehicular indoor lamp controller according to an embodiment of the present invention;
FIG. 5 is a schematic circuit diagram of a power conversion circuit of a vehicle interior light controller according to an embodiment of the present invention;
fig. 6 is a circuit schematic diagram of a power input port protection circuit of a vehicle interior light controller according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and the detailed description, in order to make the objects, technical solutions and advantages of the present invention more apparent.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be attached, detached, or integrated, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms should not be understood as necessarily being directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.
The indoor lamp controller for the vehicle comprises a power supply module, a bulb control module, a triggering module, a plurality of bulbs and LED lamps, wherein the bulb control module is coupled with the power supply module;
the control module comprises a bulb control circuit, a bulb driving circuit electrically connected with the bulb control circuit, an LED driving circuit connected with the bulb control circuit in parallel, and a PWM control circuit connected with the bulb driving circuit; the PWM control circuit is used for controlling the bulbs to gradually turn on or off, and the number of the bulb control circuit and the number of the bulb driving circuits are several and are used for respectively controlling the bulbs; the number of the LED driving circuits is several, and the LED driving circuits are used for respectively controlling the LED lamps;
the triggering module adopts an independent channel circuit or a door mode to control the gradual on or gradual off of the two bulbs, and is provided with a plurality of carbon film switches which are used for controlling the bulbs to work; the bulb is also connected with a mechanical switch, and the mechanical switch is used for controlling the bulb to be on or off or simultaneously on or off.
In an embodiment, the module, the bulb and the LED may be mounted on a PCBA, where the PCBA regularly sets a plurality of LED lamps (divided into a plurality of LED backlight lamps and LED atmosphere lamps) and the bulb (may be used as a reading lamp) which is turned on or off by a carbon film switch;
specifically, the control function of the PCBA is as follows:
1) Wherein part of the LED backlight lamps are independently controlled by an external BCM (body control module) to be simultaneously turned on and off;
2) The LED atmosphere lamp is independently controlled to be turned on and off by the BCM;
3) The reading bulb can be controlled to be on or off independently by the keys, and when the controller is electrified, the reading lamp is required to be off so as to ensure the experience of a user;
4) The reading bulb may also be controlled by a PWM foot:
specifically, a) when PWM is ON (duty cycle 0%) (i.e., when DOOR state DOOR is exactly OPEN, this is controlled by BCM); the reading light is ON (ON) at this time, regardless of the state (ON or OFF) of the reading light before; when PWM is OFF (duty cycle 100%), the reading lamp should be restored to the previous state (ON or OFF);
in other embodiments, it may also be employed when PWM is ON (duty cycle 100%) (i.e., when DOOR state DOOR is precisely OPEN, this is controlled by BCM); the bulb is ON (ON) at this time, regardless of the state (ON or OFF) before; when PWM is OFF (duty cycle 0%), the bulb should be restored to the previous state (ON or OFF);
the PWM duty cycle is the proportion of the entire period of the high level in one pulse period. For example, the duty cycle of a PWM wave of 1 second high level 1 second low level is 50%, PWM is pulse width modulation;
pulse width modulation is a very effective technique for controlling analog circuits using the digital output of a microprocessor, and is widely used in many fields from measurement, communication to power control and conversion;
pulse width modulation is a very effective technique for controlling an analog circuit by using a digital output of a microprocessor, and is widely used in many fields from measurement, communication to power control and conversion;
the pulse width modulation is an analog control mode, and the bias of the base electrode or the grid electrode of the transistor is modulated according to the change of corresponding load to change the on time of the transistor or the MOS transistor, so that the output of the switching regulated power supply is changed. This way, the output voltage of the power supply can be kept constant when the operating conditions change, and is a very effective technique for controlling the analog circuit by means of the digital signal of the microprocessor.
The PWM control technology is the most widely applied control mode of the power electronic technology by virtue of the advantages of simple control, flexibility and good dynamic response, and the bias of the base electrode or the grid electrode of the transistor is modulated according to the change of corresponding load to change the on time of the transistor or the MOS transistor, so that the change of the output of the switching regulated power supply is realized. This way, the output voltage of the power supply can be kept constant when the operating conditions change, and is a very effective technique for controlling the analog circuit by means of the digital signal of the microprocessor. Since this technique has the above-mentioned advantages, the present invention adopts this technique as a bulb control means.
5) The mechanical switch adopts a boat-shaped switch, and the boat-shaped switch has three states of OFF/DOOR/ON (the following states are required to be when MAP RH/LH is at a low level, namely, when the left and right bulbs are not active or not controlled).
A) When DOOR is in state, the 3 rd)/4) function remains unchanged.
B) When the OFF switches both ON states, both reading lamps remain ON, regardless of what state was previously.
C) When the ON switches the OFF state, both reading lamps remain ON and OFF, regardless of the time.
D) The boat switch does not control the LED atmosphere lamp and the LED backlight.
Preferably, the triggering module comprises a carbon film switch rising edge triggering circuit;
in the embodiment shown in fig. 1, the carbon film switch rising edge trigger circuit has a carbon film switch S1, a first capacitor C5 connected in series with the carbon film switch S1, a first grounding resistor R10 having one end connected to a node between the first capacitor C5 and the carbon film switch S1, a bead FB1 connected in series with the first capacitor R10, a second resistor R9, a third grounding resistor R11 connected to an end of the second resistor R9, and a second grounding capacitor C7 connected in parallel with the third grounding resistor R11; the first grounding resistor R10, the first capacitor C5, the magnetic bead FB1, the second resistor R9, the third grounding resistor R11 and the second grounding capacitor C7 form a trigger edge pulse circuit. Specifically, S1 is a triggered carbon film switch, R6 is a pull-up resistor (pull-up is that an uncertain signal is clamped at a high level through a resistor, and the resistor plays a role in limiting current simultaneously), pull-up is that current is input to a device, pull-down is that current is output, the strength is that the resistance values of the pull-up resistor are different and are not strictly distinguished, and the capability of providing current and voltage for a non-collector (or drain) open-circuit output type circuit (such as a common gate circuit) is limited, wherein the function of the pull-up resistor is mainly that a collector open-circuit output current channel is provided.
The working principle is as follows:
when the switch S1 is pressed down, 5V is instantaneously conducted, charging time is determined by R6, R10 and C5 through C5, and a rising edge occurs at the position T15 to trigger signals of a later stage 'double-D trigger circuit with two groups of setting and resetting';
FB1 (magnetic beads) and R9 are deburring for attenuation of common-mode interference signals and high-frequency switching jitter, and R11 and C7 are fine adjustments for the circuit charge-discharge time of the subsequent stage.
C5 also has the effect of isolating direct current, and when S1 is released, the electricity on C5 is discharged through R10, and the electricity on C7 is discharged through R11.
When the above parameters meet the conditions of-40 degrees to 85 degrees, the D trigger circuit with two sets of set-reset double D trigger circuits at the later stage can be triggered 100% at the speed of S1 (trigger) below 50 times per second. And reliable EMI interference and ESD interference are resisted, and finally reliable edge signals are output from the CP1 to the subsequent-stage circuit.
In the embodiment shown in fig. 1, the device parameters of R11, C7, FB1, R9, C5, R10 are preferably identical in view.
Preferably, the trigger module comprises a double-D trigger circuit with two sets of set-reset, and specifically, the double-D trigger circuit with two sets of set-reset is a later stage circuit of the carbon film switch rising edge trigger circuit.
In the embodiment shown in fig. 2, the dual D flip-flop circuit with two sets of set-reset has a 74AHC74 PW-Q100J-chip U1, a fourth resistor R18 is connected to a tenth pin of the 74AHC74 PW-Q100J-chip U1, a fifth resistor R12 and a third ground capacitor C8 are connected to a sixth pin in sequence, and a second pin is connected to a node between the fifth resistor R12 and the third ground capacitor C8; the fourth resistor R18, the third grounding capacitor C8, the sixth pin, the fifth pin and the second pin form a first D trigger circuit; an eighth pin of the 74AHC74PW-Q100J chip U1 is connected with a sixth resistor R25 and a fourth grounding capacitor C18, a twelve pin is connected with a node between the sixth resistor R25 and the fourth grounding capacitor C18, a ninth pin is connected with a fifth grounding capacitor C20, and the sixth resistor C25, the fourth grounding capacitor C18, the eighth pin, the ninth pin and the twelfth pin form a second D trigger circuit;
the first pin, the fourth pin, the tenth pin, the thirteenth pin and the peripheral devices (including R8, R7, C9, C31, R19, R18, C32 and C19 in the drawing) of the 74AHC74PW-Q100J chip U1 form 2 groups of set reset circuits;
specifically, the C4 power supply plays roles in stabilizing voltage and preventing jitter, and the C10 power supply and the C20 play roles in filtering and stabilizing level.
Preferably, the PWM control circuit is connected with a PWM inverter circuit, and the PWM inverter circuit is configured to invert the phase of an input signal of the PWM control circuit, so as to control gradual on or gradual off of the bulb.
In the embodiment shown in fig. 3, the PWM inverter circuit is used as an inverter of PWM signals with a PWM signal frequency of 200HZ or less, so as to control the gradual on and off of the subsequent stage bulb. Specifically, in the illustrated circuit, the functions of the electrical components are as follows, C30 is used for port ESD protection, D7 is used for voltage stabilization, and R15 and R16 and D7 are used for voltage stabilization of 5V; q9 and R2, C29, R33 form an inverter, and D5 acts as an OR gate. Wherein, C30 must be 100nF/100V or higher to ensure the normal operation of the circuit.
In the embodiment shown in fig. 4, the bulb driving circuit includes two patch switch diodes D6/D8 and an or circuit formed in parallel. Specifically, D6/D8 forms an OR gate circuit, R21 is a current limiting resistor, R21/R24/C17 forms control of Q5, Q5 is reliably opened and closed, R24 is used for current discharge and pull-down, C17 filters burr interference, D3 is used for resisting damage of high-voltage pulse of ISO7637 to Q5, and normal operation of the drive circuit is realized;
wherein, C17 electric capacity must be within 470Pf, R24 resistance must be within 1 Mohm, D3's withstand voltage value is between 40V to 55V, and Q5's withstand voltage value is above 55V, ensures to pass the test, reaches a better operating condition.
In the embodiment shown in fig. 5, the power module includes a power conversion circuit having a S-19212B50H-E6T1U model chip U2, specifically, in the circuit, C25 is used to prevent ESD and D10 is anti-reverse connection; r3 and C41, C28 are used to combat ISO7637 pulse-by-pulse interference. U2 is in a normally open state, and the consumed current is not more than 6uA (-40 to 85 degrees) during operation; and C25 is 100nF/100V or more, so that the power supply conversion is ensured.
In the embodiment shown in fig. 6, the power module further includes a power input port protection circuit, specifically, C21/C26 is used for ESD protection in the circuit, C37 is used for anti-reverse connection against P5b35V load of ISO7637, and D1 is used for anti-reverse connection. Wherein, C21 is more than 100nF/100V, C37 is more than 35V, and the protection function of the power supply can be ensured.
In an embodiment, optionally, the mechanical switch is a boat-type switch.
In an embodiment, optionally, the number of bulbs is 2, the number of carbon film switches is 2, and the number of mechanical switches is 1; the carbon film switch respectively and independently controls 2 bulbs, the mechanical switch simultaneously controls two bulbs, the number of the LED lamps is 4, and the control of the bulbs and the LED lamps is realized by combining the control module and the PWM circuit which are connected, specifically, the control functions are as follows:
1) Wherein part of the LED backlight lamps are independently controlled by an external BCM (body control module) to be simultaneously turned on and off;
2) The LED atmosphere lamp is independently controlled to be turned on and off by the BCM;
3) The bulbs can be controlled to be turned on and off independently by the carbon film switch respectively, and when the controller is electrified, the bulbs are kept turned off so as to ensure the experience of a user;
4) The bulb may also be controlled by a PWM foot:
specifically, a) when PWM is ON (duty cycle 0%) (i.e., when DOOR state DOOR is exactly OPEN, this is controlled by BCM); the bulb is ON (ON) at this time, regardless of the state (ON or OFF) before; when PWM is OFF (duty cycle 100%), the bulb should be restored to the previous state (ON or OFF);
in other embodiments, it may also be employed when PWM is ON (duty cycle 100%) (i.e., when DOOR state DOOR is precisely OPEN, this is controlled by BCM); the bulb is ON (ON) at this time, regardless of the state (ON or OFF) before; when PWM is OFF (duty cycle 0%), the bulb should be restored to the previous state (ON or OFF);
5) The boat-type switch has three states, namely, OFF/DOOR/ON (hereinafter, the state must be when MAP RH/LH is low, i.e., when the left and right bulbs are not active or not controlled).
A) When DOOR is in state, the 3 rd)/4) function remains unchanged.
B) When the OFF switches both ON states, both bulbs now remain ON, regardless of what state was previously.
C) When the ON switches the OFF state, both bulbs remain ON and OFF, regardless of the time.
D) The boat switch does not control the LED lamp.
The invention also discloses a vehicle with the indoor lamp controller, which comprises a vehicle main body and the indoor lamp controller arranged on the vehicle main body; the indoor lamp controller is any one of the above-described indoor lamp controllers for vehicles.
In summary, the indoor lamp controller adopting the scheme has the advantages that the controller is provided with the carbon film switch rising edge trigger circuit and the double-D trigger circuit with two groups of setting and resetting, the control of the bulb is realized by combining the trigger module, so that the bulb can be gradually lightened or gradually extinguished, meanwhile, the circuit structure has the advantages of low cost, low standby power consumption, high reliability in resisting the electronic environment of an automobile, low requirement on the structural type, simple device, no software and the like, the controller is suitable for vehicles, the standby power consumption of two chips in the circuit is not more than 50uA, the power consumption of other discrete devices is within 50uA when the other discrete devices do not work, so that the overall power consumption of the controller is controlled to be 110uA, which is far lower than that of conventional products, and a large amount of energy can be saved.
It will be apparent to those skilled in the art from this disclosure that various other changes and modifications can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The indoor lamp controller for the vehicle is characterized by comprising a power supply module, a bulb control module, a triggering module, a plurality of bulbs and LED lamps, wherein the bulb control module is coupled with the power supply module;
the control module comprises a bulb control circuit, a bulb driving circuit electrically connected with the bulb control circuit, an LED driving circuit connected with the bulb control circuit in parallel, and a PWM control circuit connected with the bulb driving circuit; the PWM control circuit is used for controlling the bulbs to gradually turn on or off, and the number of the bulb control circuit and the number of the bulb driving circuits are several and are used for respectively controlling the bulbs; the number of the LED driving circuits is several, and the LED driving circuits are used for respectively controlling the LED lamps;
the triggering module adopts an independent channel circuit or a door mode to control the gradual on or gradual off of the bulb, and is provided with a plurality of carbon film switches which are used for controlling the bulb to work; the bulb is also connected with a mechanical switch, and the mechanical switch is used for controlling the bulb to be turned on or off or turned on and off simultaneously;
the trigger module comprises a carbon film switch rising edge trigger circuit, wherein the carbon film switch rising edge trigger circuit is provided with a carbon film switch, a first capacitor connected in series with the carbon film switch, a first grounding resistor with one end connected to a node between the first capacitor and the carbon film switch, a magnetic bead connected in series with the first capacitor, a second resistor, a third grounding resistor connected with the tail end of the second resistor, and a second grounding capacitor connected in parallel with the third grounding resistor; the first grounding resistor, the first capacitor, the magnetic beads, the second resistor, the third grounding resistor and the second grounding capacitor form a trigger edge pulse circuit;
the trigger module comprises a double-D trigger circuit with two groups of setting and resetting, the double-D trigger circuit with two groups of setting and resetting is provided with a 74AHC74PW-Q100J type chip, a tenth pin of the 74AHC74PW-Q100J type chip is connected with a fourth resistor, a sixth pin is sequentially connected with a fifth resistor and a third grounding capacitor, and a second pin is connected with a node between the fifth resistor and the third grounding capacitor; the fourth resistor, the third grounding capacitor, the sixth pin, the fifth pin and the second pin form a first D trigger circuit; the eighth pin of the 74AHC74PW-Q100J chip is connected with a sixth resistor and a fourth grounding capacitor, the twelve pins are connected with a node between the sixth resistor and the fourth grounding capacitor, the ninth pin is connected with a fifth grounding capacitor, and the sixth resistor, the fourth grounding capacitor, the eighth pin, the ninth pin and the twelfth pin form a second D trigger circuit;
the first pin, the fourth pin, the tenth pin, the thirteenth pin and the peripheral device of the 74AHC74PW-Q100J type chip form 2 groups of set reset circuits.
2. The indoor lamp controller for vehicle according to claim 1, wherein the PWM control circuit is connected with a PWM inverter circuit for inverting the phase of the input signal of the PWM control circuit to realize the control of the gradual on or gradual off of the lamp bulb.
3. The vehicle interior light controller according to claim 1, wherein the bulb driving circuit comprises an or circuit formed by connecting two patch switch diodes in parallel.
4. The vehicle interior light controller of claim 1, wherein the power module comprises a power conversion circuit having a S-19212B50H-E6T1U model chip.
5. The vehicle interior light controller of claim 1, wherein the power module further comprises a power input port protection circuit.
6. The vehicle interior light controller of claim 1, wherein the mechanical switch is a boat switch.
7. The indoor lamp controller for vehicle of claim 1, wherein the number of bulbs is 2, the number of carbon film switches is 2, and the number of mechanical switches is 1; the carbon film switch is used for respectively and independently controlling 2 bulbs, and the mechanical switch is used for simultaneously controlling 2 bulbs.
8. A vehicle having an indoor lamp controller, comprising a vehicle body, an indoor lamp controller mounted to the vehicle body; the indoor lamp controller for a vehicle according to any one of claims 1 to 7.
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| CN201910614953.XA CN110225626B (en) | 2019-07-09 | 2019-07-09 | Indoor lamp controller for vehicle and vehicle with indoor lamp controller |
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