CN105128779A - Load switching information collecting system for vehicle body controller - Google Patents
Load switching information collecting system for vehicle body controller Download PDFInfo
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- CN105128779A CN105128779A CN201510560428.6A CN201510560428A CN105128779A CN 105128779 A CN105128779 A CN 105128779A CN 201510560428 A CN201510560428 A CN 201510560428A CN 105128779 A CN105128779 A CN 105128779A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
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- Engineering & Computer Science (AREA)
- Electronic Switches (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
Abstract
The invention provides a load switching information collecting system for a vehicle body controller. The load switching information collecting system comprises a vehicle-mounted storage battery, a first microcontroller and a load switching information collecting circuit, and further comprises a first switching circuit, a second switching circuit and a second microcontroller. The control end of the first switching circuit is connected with the control voltage output end of the second microcontroller, the first end of the first switching circuit is connected with the control end of the second switching circuit and the positive electrode end of the vehicle-mounted storage battery, the second end of the first switching circuit is grounded, the first end of the second switching circuit is further connected with the positive electrode end of the vehicle-mounted storage battery, and the second end of the second switching circuit is connected with the control end of the load switching information collecting circuit. By means of the load switching information collecting circuit, the electric quantity consumption of the vehicle-mounted storage battery is reduced, and thus electric lack of the whole vehicle is reduced.
Description
Technical field
The present invention relates to technical field of automobile control, be specifically related to a kind of car body controller load switch information acquisition system.
Background technology
Along with the development of automotive electronic technology, the ratio that auto electric module is occupied in integral vehicle cost is more and more higher, the control module used gets more and more, some electric equipment must be powered for a long time in order to keep the memory function of data, namely when vehicle is in static condition, still can battery consumption electricity.Current car body controller (hereinafter referred to as BCM) switching information Acquisition Circuit as shown in Figure 1, under switching circuitry all hangs over the normal power supply of car load.The existing normal electricity condition of load controlled due to BCM has again ON electricity condition, under car load is in normal electricity condition, for not needing the switching circuitry information gathering load, still can change by Gather and input circuit voltage, so inevitably battery consumption electricity, causes car load power shortage.Therefore, design a low-power consumption automobile controller switching information Acquisition Circuit and be used for preventing storage battery over discharge, just seem particularly important.
Summary of the invention
The invention provides a kind of car body controller load switch information acquisition system, to solve the problem of storage battery over discharge under normal state.
To achieve these goals, the invention provides following technical scheme:
A kind of car body controller load switch information acquisition system, comprise: Vehicular accumulator cell, first microcontroller, load switch information acquisition circuit, described system also comprises: the first switch circuit, second switch circuit and the second microcontroller, the control end of described first switch circuit connects the control voltage mouth of described second microcontroller, the first end of described first switch circuit connects the control end of described second switch circuit and the positive terminal of described Vehicular accumulator cell simultaneously, second end ground connection of described first switch circuit, the first end of described second switch circuit also connects the positive terminal of described Vehicular accumulator cell, second end of described second switch circuit connects the control end of described load switch information acquisition circuit, described first microcontroller is for gathering load switch information, described second microcontroller is used for making control according to vehicle ignition key state and whole vehicle state, when ignition key is in ON shelves, described control voltage output end voltage is drawn high, described first switch circuit loop conducting, when ignition key is in LOCK shelves, described control voltage output end voltage is 0, and described first switch circuit loop disconnects.
Preferably, described first switch circuit comprises the first aerotron, the base stage of described first aerotron connects described control voltage input end, the collecting electrode of described first aerotron connects described second switch control circui end and described Vehicular accumulator cell positive terminal, the grounded emitter of described first aerotron; Described first aerotron provides voltage for the control end of second switch circuit, and controls described second switch circuit turn-on.
Preferably, described first switch circuit also comprises: the 4th resistance and the 5th resistance, described 4th resistance one end connects described control voltage input end, and the described 4th resistance other end connects the base stage of described first aerotron and described 5th resistance one end simultaneously, described 5th resistance other end ground connection; Described 4th resistance and described 5th resistance provide bias voltage, to make base stage and the emitter conducting of described first aerotron for the base stage of described first aerotron.
Preferably, the resistance of described 4th resistance is 22k Ω, and the resistance of described 5th resistance is 33k Ω.
Preferably, described second switch circuit comprises the second aerotron, the base stage of described second aerotron connects the first end of described first switch circuit, the emitter of described second aerotron connects described Vehicular accumulator cell positive terminal, and the collector terminal of described second aerotron connects the control end of described load switch information acquisition circuit; Described second aerotron provides power supply for described load switch information acquisition circuit.
Preferably, described second switch circuit also comprises: the 6th resistance and the 7th resistance, described 6th resistance one end connects described power output end, the described 6th resistance other end connects described second transistor base and described 7th resistance one end simultaneously, and the described 7th resistance other end connects the collecting electrode of described first aerotron; Described 6th resistance and described 7th resistance provide voltage to the collecting electrode of described first aerotron, and described 6th resistance provides bias voltage to the base stage of described second aerotron.
Preferably, the resistance of described 6th resistance is 47k Ω, and the resistance of described 7th resistance is 10k Ω.
Preferably, described load switch information acquisition circuit comprises: the first resistance, second resistance, 3rd resistance, first cond, diode and load switch, described first resistance one end connects the second end of described second switch circuit, the described first resistance other end connects described diode one end and described second resistance one end simultaneously, the described diode other end connects described load switch one end and described first cond one end simultaneously, described load switch other end ground connection, described first cond other end ground connection, the described second resistance other end connects the collection terminal of described first microcontroller and described 3rd resistance one end simultaneously, described 3rd resistance other end ground connection, described first resistance as pull-up resistor for second switch circuit provides wet current, described second resistance and described 3rd resistance carry out dividing potential drop as divider resistance to described Vehicular accumulator cell positive terminal voltage, and described first cond is for eliminating electrostatic and carrying out filtering.
Preferably, it is characterized in that, the resistance of described first resistance is 1k Ω, and the resistance of described second resistance is 100k Ω, and the resistance of described 3rd resistance is 100k Ω.
Beneficial effect of the present invention is: the invention provides a kind of car body controller load switch information acquisition system, carry out control load switching information Acquisition Circuit by the first switch circuit and second switch circuit.Only have the first switch circuit conducting when ignition key rotates to ON file location, described first switch circuit controls second switch circuit turn-on, and following described second switch control circui load switch information acquisition circuit is to load switch information.Like this, when ignition key does not rotate to ON file location, just do not need to gather load switch information, decrease accumulator electric-quantity consumption, and then decrease car load power shortage.
Accompanying drawing explanation
Fig. 1 is the car body controller switching information Acquisition Circuit of prior art.
Fig. 2 is car body controller switching information Acquisition Circuit of the present invention.
R1, the first resistance R2, the second resistance R3, the 3rd resistance R4, the 4th resistance R5, the 5th resistance R6, the 6th resistance R7, the 7th resistance Q1, the first aerotron Q2, the second aerotron MCU1, the first microcontroller 2, second microcontroller C1, the first cond P, the control voltage mouth K of the second microcontroller, load switch
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Normal electricity condition: when ignition key does not insert ignition lock, after opening the switch of some function, this function can normally work, and is normal electricity condition.
ON electricity condition: when ignition key insertion ignition key rotates to ON file location, after opening the switch of some function, some function just can normally work, and is ON electricity condition.
Wake-up states: BCM controlling functions is in normal working and is wake-up states.
Dormant state: refer to that all functions that BCM controls all do not work at present, such as, when vehicle is positioned over garage, all functions are in non-mode of operation, in general, when romote controlled locking is after 2 minutes, BCM can enter dormant state, and the frequency that BCM gathers switching information can reduce.
As shown in Figure 2, for a kind of car body controller load switch information acquisition system provided by the invention, comprise: Vehicular accumulator cell, first microcontroller, load switch information acquisition circuit, described system also comprises: the first switch circuit, second switch circuit and the second microcontroller, the control end of described first switch circuit connects the control voltage mouth of described second microcontroller, the first end of described first switch circuit connects the control end of described second switch circuit and the positive terminal of described Vehicular accumulator cell simultaneously, second end ground connection of described first switch circuit, the first end of described second switch circuit also connects the positive terminal of described Vehicular accumulator cell, second end of described second switch circuit connects the control end of described load switch information acquisition circuit, described first microcontroller is for gathering load switch information, described second microcontroller is used for making control according to vehicle ignition key state and whole vehicle state, when ignition key is in ON shelves, described control voltage output end voltage is drawn high, described first switch circuit loop conducting, when ignition key is in LOCK shelves, described control voltage output end voltage is 0, and described first switch circuit loop disconnects.
Wherein, described first switch circuit comprises the first aerotron, the base stage of described first aerotron connects described control voltage input end, and the collecting electrode of described first aerotron connects described second switch control circui end and described Vehicular accumulator cell positive terminal, the grounded emitter of described first aerotron; Described first aerotron provides voltage for the control end of second switch circuit, and controls described second switch circuit turn-on.
Further, described first switch circuit also comprises: the 4th resistance and the 5th resistance, described 4th resistance one end connects described control voltage input end, and the described 4th resistance other end connects the base stage of described first aerotron and described 5th resistance one end simultaneously, described 5th resistance other end ground connection; Described 4th resistance and described 5th resistance provide bias voltage, to make base stage and the emitter conducting of described first aerotron for the base stage of described first aerotron.The resistance of described 4th resistance R4 is 22k Ω, and the resistance of described 5th resistance R5 is 33k Ω.
Here, described negative control voltage input end connects the second microcontroller 2, for judging that vehicle ignition key state and whole vehicle state make control, if ignition key is in ON shelves, control P point voltage draws high 5V, then the conducting of whole loop, if igniting is LOCK shelves, then control P point voltage is 0, then whole loop not conducting.In addition, second controller MCU2 provides base tension for the first aerotron Q1.
Wherein, described second switch circuit comprises the second aerotron, the base stage of described second aerotron connects the first end of described first switch circuit, the emitter of described second aerotron connects described Vehicular accumulator cell positive terminal, and the collector terminal of described second aerotron connects the control end of described load switch information acquisition circuit; Described second aerotron provides power supply for described load switch information acquisition circuit.
Further, described second switch circuit also comprises: the 6th resistance and the 7th resistance, described 6th resistance one end connects described power output end, the described 6th resistance other end connects described second transistor base and described 7th resistance one end simultaneously, and the described 7th resistance other end connects the collecting electrode of described first aerotron; Described 6th resistance and described 7th resistance provide voltage to the collecting electrode of described first aerotron, and described 6th resistance provides bias voltage to the base stage of described second aerotron.The resistance of described 6th resistance R6 is 47k Ω, and the resistance of described 7th resistance R7 is 10k Ω.
Wherein, described load switch information acquisition circuit comprises: the first resistance, second resistance, 3rd resistance, first cond, diode and load switch, described first resistance one end connects the second end of described second switch circuit, the described first resistance other end connects described diode one end and described second resistance one end simultaneously, the described diode other end connects described load switch one end and described first cond one end simultaneously, described load switch other end ground connection, described first cond other end ground connection, the described second resistance other end connects the collection terminal of described first microcontroller and described 3rd resistance one end simultaneously, described 3rd resistance other end ground connection, described first resistance as pull-up resistor for second switch circuit provides wet current, described second resistance and described 3rd resistance carry out dividing potential drop as divider resistance to described Vehicular accumulator cell positive terminal voltage, and described first cond is for eliminating electrostatic and carrying out filtering.Described first resistance R1 resistance is 1k Ω, and described second resistance R2 resistance is 100k Ω, and described 3rd resistance R3 resistance is 100k Ω.Described load switch information acquisition end is connected with the first controller MCU1, for gathering load switch state and function logic judges that described diode is backward diode, for ending external high voltage, and protection car body controller internal circuit.
As shown in Figure 2, when car load is in normal electricity condition, BCM does not need to gather load switch change information, then MCU2 controls the shutoff of control voltage mouth P point, then the first aerotron Q1, the second aerotron Q2 are all in off condition, and the first switch circuit, second switch circuit, load switch information acquisition circuit are all in off-state.Therefore, when BCM is in normal electric dormant state, described load switch information acquisition circuit power supply is disconnected, then can not produce quiescent current power consumption.
As shown in Figure 2, when car load is in ON electricity condition, BCM need gather load switch change information, MCU2 is by the conducting of control voltage mouth P point, then electric current is through the 4th resistance R4, and the first aerotron Q1 gets back to ground, form the first loop A, there is electric current in the first aerotron Q1 base stage, emitter, then conducting between the first aerotron Q1 collector and emitter, i.e. the first aerotron Q1 conducting.
Between the first aerotron Q1 collector and emitter after conducting, second servo loop B forms conducting loop by Vehicular accumulator cell positive pole through the 6th resistance R6, the 7th resistance R7, the first aerotron Q1, now, there is electric current in emitter, the base stage of the second aerotron Q2, conducting between the collector and emitter of then the second aerotron Q2, namely tertiary circuit C forms conducting loop, Vehicular accumulator cell positive terminal provides pull-up power supply to load switch information acquisition circuit, normally to work the status information for gathering load switch K for load switch information acquisition circuit.
Therefore, by the conducting of MCU2 control voltage mouth P spot control voltage whether, i.e. controllable switch information acquisition circuit power supply, do not need when car load is in normal electricity condition to gather on-off signal, the power supply of load switch information acquisition circuit can be cut off, the electric quantity consumption of storage battery can be saved like this, and then decrease car load power shortage.
In another embodiment, the turn-on and turn-off dutycycle of the second microcontroller 2 control voltage mouth P spot control voltage carrys out master cock information acquisition circuit power supply.When BCM be in wake mode of operation up time, the turn-on and turn-off dutycycle of described control voltage mouth P spot control voltage is 10%, namely in each collection period (100ms), control voltage mouth P point ON time 10ms, turn-off time 90ms; When BCM is in dormant state, the turn-on and turn-off dutycycle of described control voltage mouth P spot control voltage is 4%, namely in each collection period (100ms), and control voltage mouth P point ON time 4ms, turn-off time 96ms.According to this duty cycle adjustment mode, the electric quantity consumption of storage battery can be saved, do not need when car load is in normal electricity condition to gather on-off signal, the power supply of load switch information acquisition circuit can be cut off, the electric quantity consumption of storage battery can be saved like this, and then decrease car load power shortage.
Above-described specific embodiment; object of the present invention, technical scheme are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a car body controller load switch information acquisition system, comprise: Vehicular accumulator cell, first microcontroller, load switch information acquisition circuit, it is characterized in that, described system also comprises: the first switch circuit, second switch circuit and the second microcontroller, the control end of described first switch circuit connects the control voltage mouth of described second microcontroller, the first end of described first switch circuit connects the control end of described second switch circuit and the positive terminal of described Vehicular accumulator cell simultaneously, second end ground connection of described first switch circuit, the first end of described second switch circuit also connects the positive terminal of described Vehicular accumulator cell, second end of described second switch circuit connects the control end of described load switch information acquisition circuit, described first microcontroller is for gathering load switch information, described second microcontroller is used for making control according to vehicle ignition key state and whole vehicle state, when ignition key is in ON shelves, described control voltage output end voltage is drawn high, described first switch circuit loop conducting, when ignition key is in LOCK shelves, described control voltage output end voltage is 0, and described first switch circuit loop disconnects.
2. system according to claim 1, it is characterized in that, described first switch circuit comprises the first aerotron, the base stage of described first aerotron connects described control voltage input end, the collecting electrode of described first aerotron connects described second switch control circui end and described Vehicular accumulator cell positive terminal, the grounded emitter of described first aerotron; Described first aerotron provides voltage for the control end of second switch circuit, and controls described second switch circuit turn-on.
3. system according to claim 2, it is characterized in that, described first switch circuit also comprises: the 4th resistance and the 5th resistance, described 4th resistance one end connects described control voltage input end, the described 4th resistance other end connects the base stage of described first aerotron and described 5th resistance one end simultaneously, described 5th resistance other end ground connection; Described 4th resistance and described 5th resistance provide bias voltage, to make base stage and the emitter conducting of described first aerotron for the base stage of described first aerotron.
4. system according to claim 3, it is characterized in that, the resistance of described 4th resistance is 22k Ω, and the resistance of described 5th resistance is 33k Ω.
5. system according to claim 1, it is characterized in that, described second switch circuit comprises the second aerotron, the base stage of described second aerotron connects the first end of described first switch circuit, the emitter of described second aerotron connects described Vehicular accumulator cell positive terminal, and the collector terminal of described second aerotron connects the control end of described load switch information acquisition circuit; Described second aerotron provides power supply for described load switch information acquisition circuit.
6. system according to claim 5, it is characterized in that, described second switch circuit also comprises: the 6th resistance and the 7th resistance, described 6th resistance one end connects described power output end, the described 6th resistance other end connects described second transistor base and described 7th resistance one end simultaneously, and the described 7th resistance other end connects the collecting electrode of described first aerotron; Described 6th resistance and described 7th resistance provide voltage to the collecting electrode of described first aerotron, and described 6th resistance provides bias voltage to the base stage of described second aerotron.
7. system according to claim 6, it is characterized in that, the resistance of described 6th resistance is 47k Ω, and the resistance of described 7th resistance is 10k Ω.
8. system according to claim 1, it is characterized in that, described load switch information acquisition circuit comprises: the first resistance, second resistance, 3rd resistance, first cond, diode and load switch, described first resistance one end connects the second end of described second switch circuit, the described first resistance other end connects described diode one end and described second resistance one end simultaneously, the described diode other end connects described load switch one end and described first cond one end simultaneously, described load switch other end ground connection, described first cond other end ground connection, the described second resistance other end connects the collection terminal of described first microcontroller and described 3rd resistance one end simultaneously, described 3rd resistance other end ground connection, described first resistance as pull-up resistor for second switch circuit provides wet current, described second resistance and described 3rd resistance carry out dividing potential drop as divider resistance to described Vehicular accumulator cell positive terminal voltage, and described first cond is for eliminating electrostatic and carrying out filtering.
9. system according to claim 8, it is characterized in that, the resistance of described first resistance is 1k Ω, and the resistance of described second resistance is 100k Ω, and the resistance of described 3rd resistance is 100k Ω.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510560428.6A CN105128779B (en) | 2015-08-28 | 2015-08-28 | Load switching information collecting system for vehicle body controller |
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| CN201510560428.6A CN105128779B (en) | 2015-08-28 | 2015-08-28 | Load switching information collecting system for vehicle body controller |
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| CN105128779B CN105128779B (en) | 2017-05-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106487368A (en) * | 2016-09-13 | 2017-03-08 | 北京博纳电气股份有限公司 | High speed digital switches based on bipolar semiconductor triode |
| CN108134591A (en) * | 2018-03-12 | 2018-06-08 | 上海物麒科技有限公司 | A kind of reconfigurable filter |
| CN112162500A (en) * | 2020-08-24 | 2021-01-01 | 东风电驱动系统有限公司 | Switching signal processing method and system |
| CN113544018A (en) * | 2019-03-07 | 2021-10-22 | 蒂森克虏伯股份公司 | Motor vehicle control device having a switching function for at least one electrical consumer controlled by the motor vehicle control device |
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| CN113544018A (en) * | 2019-03-07 | 2021-10-22 | 蒂森克虏伯股份公司 | Motor vehicle control device having a switching function for at least one electrical consumer controlled by the motor vehicle control device |
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| CN112162500A (en) * | 2020-08-24 | 2021-01-01 | 东风电驱动系统有限公司 | Switching signal processing method and system |
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| Publication number | Publication date |
|---|---|
| CN105128779B (en) | 2017-05-10 |
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