CN107491155A - The hard reset control system and method for board information terminal - Google Patents
The hard reset control system and method for board information terminal Download PDFInfo
- Publication number
- CN107491155A CN107491155A CN201710543297.XA CN201710543297A CN107491155A CN 107491155 A CN107491155 A CN 107491155A CN 201710543297 A CN201710543297 A CN 201710543297A CN 107491155 A CN107491155 A CN 107491155A
- Authority
- CN
- China
- Prior art keywords
- resistance
- module
- electric capacity
- transistor
- discharge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/24—Resetting means
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/22—Modifications for ensuring a predetermined initial state when the supply voltage has been applied
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/22—Modifications for ensuring a predetermined initial state when the supply voltage has been applied
- H03K2017/226—Modifications for ensuring a predetermined initial state when the supply voltage has been applied in bipolar transistor switches
Abstract
The invention discloses the hard reset control system and method for a kind of board information terminal.The system includes：Level switch module, first end is connected with controlling switch, second end is connected with the first end of capacitor charge and discharge module, for controlling capacitor charge and discharge module to carry out electric capacity charging when controlling switch closes, controls capacitor charge and discharge module to carry out electric capacity electric discharge when controlling switch disconnects；Voltage comparison module, input is connected with the second end of capacitor charge and discharge module, output end is connected with power management module, for exporting low level signal when electric capacity charges to indicate that power management module stops powering to board information terminal, high level signal is exported when electric capacity discharges to indicate that power management module is powered to board information terminal.The present invention solves board information terminal in the prior art because when crashing or enter abnormal pattern, can not carry out the technical problem of system hard reset.
Description
Technical field
The present invention relates to computer realm, a kind of hard reset control system in particular to board information terminal and
Method.
Background technology
With wireless mobile communications 2G/3G high speed development, with reference to the board information terminal of GPS navigation location technology
Telematics-Box, abbreviation T-Box, just prosperity is got up in high gear.Powered environment by the harsh use of automotive electronics,
This, by built-in 2G/3G mobile communication module, transmits bus location and remote diagnostic information, brought new incessantly to T-Box
Test.In this complicated and harsh automobile application environment, TBOX is possible to crash or into abnormal work
Pattern, for example without 3G/4G signals, and amusement vehicle device or automobile communication failure etc., may need this when to restart
TBOX, due to outside TBOX may with regard to a SOS button, unspecial reset key, meanwhile, systems versus software resets again
It is not responding to.
For board information terminal in the prior art because when crashing or enter abnormal pattern, can not be
The problem of system hard reset, effective solution is not yet proposed at present.
The content of the invention
It is existing at least to solve the embodiments of the invention provide the hard reset control system and method for a kind of board information terminal
There is board information terminal in technology because when crashing or enter abnormal pattern, the technology of system hard reset can not be carried out
Problem.
One side according to embodiments of the present invention, there is provided the hard reset control system of board information terminal, including：Electricity
Flat modular converter, first end are connected with controlling switch, and the second end is connected with the first end of capacitor charge and discharge module, for
Control the capacitor charge and discharge module to carry out electric capacity charging during the controlling switch closure, controlled when the controlling switch disconnects
The capacitor charge and discharge module carries out electric capacity electric discharge；Voltage comparison module, input and the second of the capacitor charge and discharge module
End is connected, and output end is connected with the power management module of board information terminal, for defeated in the electric capacity charging process
Go out low level signal, high level signal is exported in the electric capacity discharge process, wherein, the low level signal is used to indicate institute
State power management module to stop powering to the board information terminal, the high level signal is used to indicate the power management mould
Block is powered to the board information terminal.
Further, the system also includes：The first transistor, respectively with the second end of the level switch module and
The first end of the capacitor charge and discharge module is connected, for being turned on when the controlling switch closes to control the electric capacity to fill
Discharge module carries out electric capacity charging, is disconnected when the controlling switch disconnects to control the capacitor charge and discharge module to carry out electric capacity
Electric discharge.
Further, the voltage comparison module includes：Voltage comparator, wherein, the positive of the voltage comparator is defeated
Enter end with the first power supply to be connected, the inverting input of the voltage comparator and the second end phase of the capacitor charge and discharge module
Connection, the output end of the voltage comparator are connected with the power management module.
Further, the level switch module includes：Second transistor, the base stage of the second transistor and the control
The first end of system switch is connected, the second end ground connection of the controlling switch, the emitter stage of the second transistor and the second electricity
Source is connected, and the colelctor electrode of the second transistor is grounded by first resistor；Third transistor, the base of the third transistor
Pole is connected with the colelctor electrode of the second transistor, the grounded emitter of the third transistor, the third transistor
Colelctor electrode is connected by second resistance with first power supply.
Further, the base stage of the first transistor is connected with the colelctor electrode of the third transistor, and described first
The emitter stage of transistor is connected with first power supply, and the colelctor electrode of the first transistor passes through 3rd resistor and the electricity
The first end of appearance is connected, the second end ground connection of the electric capacity.
Further, the capacitor charge and discharge module also includes：4th resistance, the first end of the 4th resistance with it is described
Electric capacity is connected, the second end of the 4th resistance ground connection, wherein, in the case where the first transistor turns on, described the
One power supply is charged by the 3rd resistor to the electric capacity, in the case where the first transistor is not turned on, the electric capacity
Pass through the 4th conductive discharge.
Further, the normal phase input end of the voltage comparator is connected with the first end of the 5th resistance, and the described 5th
Second end of resistance is connected with first power supply, and the first end of the 5th resistance passes through the 6th resistance eutral grounding, the electricity
Pressure comparator inverting input be connected with the first end of the 4th resistance, the output end of the voltage comparator with it is described
The Enable Pin of power management module is connected, and the output end of the voltage comparator passes through the 7th resistance and the 5th resistance
Second end is connected.
Another aspect according to embodiments of the present invention, a kind of hard reset control method of board information terminal is additionally provided,
Including：Whether detection controlling switch closes, wherein, the controlling switch is the switch set on board information terminal；Detecting
In the case of being closed to the controlling switch, capacitor charge and discharge module is controlled to carry out electric capacity charging by level switch module, its
In, voltage comparison module exports low level signal in the electric capacity charging process, and the low level signal is described for indicating
The power management module of board information terminal stops powering to the board information terminal, the first end of the level switch module
It is connected with the controlling switch, the second end of the level switch module is connected with the first end of the capacitor charge and discharge module
Connect, the input of the voltage comparison module is connected with the second end of the capacitor charge and discharge module, and the voltage ratio is compared with mould
The output end of block is connected with the power management module；In the case where detecting that the controlling switch disconnects, by described
Level switch module controls the capacitor charge and discharge module to carry out electric capacity electric discharge, wherein, described in the electric capacity discharge process
Voltage comparison module exports high level signal, and the high level signal is used to indicate the power management module to the vehicle-mounted letter
Cease terminal power supply.
Further, in the case where detecting the controlling switch closure, methods described also includes：Determine the electric capacity
Charging interval, wherein, the capacitor charge and discharge module also includes 3rd resistor and the 4th resistance, the first of the 3rd resistor
End is connected with the first transistor, and the first transistor is connected with the second end of the level switch module, and the described 3rd
Second end of resistance is connected with the first end of the electric capacity, the second end ground connection of the electric capacity, and the first of the 4th resistance
End is connected with the first end of the electric capacity, and the second end ground connection of the 4th resistance, the voltage comparison module includes voltage
Comparator, the normal phase input end of the voltage comparator are connected with the first end of the 5th resistance, and the second of the 5th resistance
End is connected with the first power supply, the first end of the 5th resistance by the 6th resistance eutral grounding, the voltage comparator it is anti-phase
Input is connected with the first end of the 4th resistance, and the charging interval is by the capacitance of the electric capacity and the described 3rd
Resistance, the 4th resistance, the 5th resistance, the resistance of the 6th resistance determine.
Further, in the case where detecting that the controlling switch disconnects, methods described also includes：Determine the electric capacity
Discharge time, wherein, the discharge time by the capacitance of the electric capacity and the 3rd resistor, the 4th resistance,
5th resistance, the resistance of the 6th resistance determine.
In embodiments of the present invention, detect whether the controlling switch set on board information terminal closes, detecting this
In the case that controlling switch closes, by the level switch module being connected with controlling switch, control is connected with level switch module
First crystal conducting, then charged by the capacitor charge and discharge module that is connected with the first transistor to electric capacity, and using reversely
Input is connected with capacitor charge and discharge module, and positive input is connected with the first power supply, and output end is connected with power management module
The voltage comparison module connect, the power management module of board information terminal is controlled to stop powering to board information terminal；Detecting
In the case of being disconnected to the controlling switch, control the first transistor to be not turned on by level switch module, pass through capacitor charge and discharge
Module control electric capacity electric discharge, and control power management module to be powered to board information terminal using voltage comparison module, so as to
, can be to vehicle-mounted whether to be powered by the disconnection of controlling switch and closure, control power management module to board information terminal
Information terminal is resetted, and then solves board information terminal in the prior art because crashing or entering abnormal pattern
When, the technical problem of system hard reset can not be carried out.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is a kind of signal of the hard reset control system of optional board information terminal according to embodiments of the present invention
Figure；
Fig. 2 is a kind of schematic diagram of the hard reset control circuit of optional board information terminal according to embodiments of the present invention
One；
Fig. 3 is a kind of schematic diagram of the hard reset control circuit of optional board information terminal according to embodiments of the present invention
Two；
Fig. 4 is a kind of flow of the hard reset control method of optional board information terminal according to embodiments of the present invention
Figure.
Embodiment
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, it should all belong to the model that the present invention protects
Enclose.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so use
Data can exchange in the appropriate case, so as to embodiments of the invention described herein can with except illustrating herein or
Order beyond those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, be not necessarily limited to for example, containing the process of series of steps or unit, method, system, product or equipment
Those steps or unit clearly listed, but may include not list clearly or for these processes, method, product
Or the intrinsic other steps of equipment or unit.
According to embodiments of the present invention, there is provided a kind of hard reset control method embodiment of board information terminal is, it is necessary to say
It is bright, it can be held the step of the flow of accompanying drawing illustrates in the computer system of such as one group computer executable instructions
OK, although also, show logical order in flow charts, in some cases, can be with different from order herein
Perform shown or described step.
Fig. 1 is a kind of signal of the hard reset control system of optional board information terminal according to embodiments of the present invention
Figure, as shown in figure 1, the system can include：Level switch module 31, capacitor charge and discharge module 33 and voltage comparison module
35, wherein, the first end of level switch module is connected with controlling switch, the second end and the first end phase of capacitor charge and discharge module
Connection, for controlling capacitor charge and discharge module to carry out electric capacity charging when controlling switch closes, controlled when controlling switch disconnects
Capacitor charge and discharge module carries out electric capacity electric discharge；The input of voltage comparison module is connected with the second end of capacitor charge and discharge module
Connect, output end is connected with the power management module of board information terminal, for exporting low level letter in electric capacity charging process
Number, high level signal is exported in electric capacity discharge process, wherein, low level signal is used to indicate that power management module stops to car
Information terminal power supply is carried, high level signal is used to indicate that power management module is powered to board information terminal.
Alternatively, the system can also include the first transistor, wherein, the first end and controlling switch of level switch module
It is connected, the second end is connected with the first transistor, for controlling the first transistor conducting when controlling switch closes, is controlling
The first transistor is controlled to be not turned on when switching off.Capacitor charge and discharge module can include electric capacity, wherein, capacitor charge and discharge module
First end be connected with the first transistor, for being turned in the first transistor in the case of for electric capacity charge, in first crystal
Pipe controls electric capacity electric discharge in the case of being not turned on.
Alternatively, voltage comparison module can include voltage comparator, wherein, the normal phase input end of voltage comparator and
One power supply is connected, and the inverting input of voltage comparator is connected with the second end of capacitor charge and discharge module, voltage comparator
Output end be connected with the power management module of board information terminal, in electric capacity charging process export low level letter
Number, low level signal is used to indicate that power management module stops powering to board information terminal, is exported in electric capacity discharge process
High level signal, high level signal are used to indicate that power management module is powered to board information terminal.
According to the above embodiment of the present invention, board information terminal include level switch module, capacitor charge and discharge module and
Voltage comparison module, wherein, the first end of level switch module is connected with controlling switch, the second end of level switch module
One transistor is connected, and the first transistor conducting can be controlled in the case where controlling switch closes by level switch module,
Controlling switch controls the first transistor to disconnect in the case of disconnecting, and realizes the control to the first transistor；Capacitor charge and discharge module
First end be connected with the first transistor, can the position electric capacity charging in the case where the first transistor turns on, in the first transistor
Electric capacity electric discharge is controlled in the case of being not turned on；Then it is connected by the normal phase input end in voltage comparison module with the first power supply
Connect, inverting input is connected with capacitor charge and discharge module, and output end is connected with the power management module of board information terminal
Voltage comparator, in electric capacity charging process export low level signal instruction power management module stop to board information terminal
Power supply；High level signal is exported in electric capacity discharge process and indicates that power management module is powered to board information terminal, so as to
Whether to power, be realized to vehicle-mounted to board information terminal by the disconnection of controlling switch and closure, control power management module
Information terminal is resetted, and then solves board information terminal in the prior art because crashing or entering abnormal pattern
When, the technical problem of system hard reset can not be carried out.
Fig. 2 is a kind of schematic diagram of the hard reset control circuit of optional board information terminal according to embodiments of the present invention
One, as shown in Fig. 2 the first end of level switch module is connected with controlling switch S1, the second end is connected with the first transistor Q3
Connect, for controlling the first transistor conducting when controlling switch closes, control the first transistor not lead when controlling switch disconnects
It is logical；Capacitor charge and discharge module includes electric capacity C1, wherein, the first end of capacitor charge and discharge module is connected with the first transistor, uses
Charged in the case of being turned in the first transistor for electric capacity, electric capacity electric discharge is controlled in the case where the first transistor is not turned on；
Voltage comparison module includes voltage comparator U40, wherein, the normal phase input end of voltage comparator is connected with the first power supply VBAT
Connect, the inverting input of voltage comparator is connected with the second end of capacitor charge and discharge module, the output end of voltage comparator with
The power management module PMIC of board information terminal is connected, for exporting low level signal, low electricity in electric capacity charging process
Ordinary mail number is used to indicate that power management module stops powering to board information terminal, and high level letter is exported in electric capacity discharge process
Number, high level signal is used to indicate that power management module is powered to board information terminal.
As one kind, alternatively embodiment, level switch module include：Second transistor, the base stage of second transistor and control
The first end of system switch is connected, and the second end ground connection of controlling switch, the emitter stage of second transistor is connected with second source,
The colelctor electrode of second transistor is grounded by first resistor；Third transistor, the base stage of third transistor and second transistor
Colelctor electrode is connected, the grounded emitter of third transistor, and the colelctor electrode of third transistor passes through second resistance and the first power supply
It is connected.
Using the above embodiment of the present invention, the base stage of second transistor and the first end of controlling switch in level switch module
It is connected, the second end ground connection of controlling switch, the emitter stage of second transistor is connected with second source, the collection of second transistor
Electrode is grounded by first resistor, can send the signal of controlling switch to second transistor；The base stage of third transistor with
The colelctor electrode of second transistor is connected, the grounded emitter of third transistor, and the colelctor electrode of third transistor passes through the second electricity
Resistance is connected with the first power supply, and the signal of the controlling switch of second transistor transmission can be obtained by third transistor.
It is connected as a kind of alternatively embodiment, the base stage of the first transistor with the colelctor electrode of third transistor, first
The emitter stage of transistor is connected with the first power supply, and the colelctor electrode of the first transistor passes through 3rd resistor and the first end phase of electric capacity
Connection, the second end ground connection of electric capacity.
Using the above embodiment of the present invention, the collection of the third transistor in the base stage and level switch module of the first transistor
Electrode is connected, and the emitter stage of the first transistor is connected with the first power supply, and the colelctor electrode of the first transistor passes through electric capacity charge and discharge
3rd resistor in electric module is connected with the first end of electric capacity, and the second end of electric capacity is grounded in capacitor charge and discharge module,
, can be by level switch module so as to establish the connection of capacitor charge and discharge module and level switch module by the first transistor
The signal that third transistor obtains controlling switch is transferred to capacitor charge and discharge module, controls electric capacity in capacitor charge and discharge module to fill
Electricity.
As one kind, alternatively embodiment, capacitor charge and discharge module also include：4th resistance, the first end of the 4th resistance with
Electric capacity is connected, the second end of the 4th resistance ground connection, wherein, in the case where the first transistor turns on, the first power supply passes through the
Three resistance charge to electric capacity, and in the case where the first transistor is not turned on, electric capacity passes through the 4th conductive discharge.
Using the above embodiment of the present invention, the first end of the 4th resistance is connected with electric capacity, the second termination of the 4th resistance
Ground, wherein, in the case where the first transistor turns on, the first power supply is charged by 3rd resistor to electric capacity, in the first transistor
In the case of being not turned on, electric capacity is by the 4th conductive discharge, so as to realize the charging and discharging of capacitor charge and discharge module.
It is connected as a kind of alternatively embodiment, the normal phase input end of voltage comparator with the first end of the 5th resistance,
Second end of the 5th resistance is connected with the first power supply, and the first end of the 5th resistance passes through the 6th resistance eutral grounding, voltage comparator
Inverting input be connected with the first end of the 4th resistance, the output end of voltage comparator and the Enable Pin of power management module
It is connected, the output end of voltage comparator is connected by the 7th resistance with the second end of the 5th resistance.
Using the above embodiment of the present invention, the normal phase input end of voltage comparator is connected with the first end of the 5th resistance,
Second end of the 5th resistance is connected with the first power supply, and the first end of the 5th resistance passes through the 6th resistance eutral grounding, voltage comparator
Inverting input be connected with the first end of the 4th resistance, the output end of voltage comparator and the Enable Pin of power management module
It is connected, the output end of voltage comparator is connected by the 7th resistance with the second end of the 5th resistance, so as to voltage comparator
Signal when electric capacity discharges in capacitor charge and discharge module can be obtained, high level is exported by voltage comparator, makes on-vehicle information
Terminal restarts.
Fig. 3 is a kind of schematic diagram of the hard reset control circuit of optional board information terminal according to embodiments of the present invention
Two, as shown in figure 3, including power switch S1, the 8th resistance R9, level switch module 31, the first transistor Q3, capacitor charge and discharge
Module 33, voltage comparison module 35 and power management module PMIC.
Alternatively, level switch module 31 includes：Second transistor Q4 and third transistor Q1, the base of second transistor
Pole is connected with the first end of controlling switch, the second end ground connection of controlling switch, the emitter stage and second source of second transistor
SYS-VOLTAGE is connected, and the colelctor electrode of second transistor is grounded by first resistor R7；Third transistor, third transistor
Q1 base stage is connected with the colelctor electrode of second transistor, the grounded emitter of third transistor, the colelctor electrode of third transistor
It is connected by second resistance R8 with the first power supply VBAT.
Alternatively, the emitter stage of second transistor is connected with the base stage of second transistor by the 8th resistance R9.
Alternatively, the first transistor Q3 base stage is connected with third transistor Q1 colelctor electrode, the first transistor Q3's
Emitter stage is connected with the first power supply VBAT, and the first transistor Q3 colelctor electrode passes through 3rd resistor R1 and electric capacity C1 first end
It is connected, electric capacity C1 the second end ground connection.
Alternatively, capacitor charge and discharge module 33 includes：3rd resistor R1, the 4th resistance R6 and electric capacity C1, the 3rd electricity
Resistance R1 is connected with the first transistor Q3, and the 4th resistance R6 first end is connected with electric capacity C1, the 4th resistance R6 the second termination
Ground, wherein, in the case where the first transistor Q3 is turned on, the first power supply is charged by 3rd resistor R1 to electric capacity C1, first
In the case that transistor Q3 is not turned on, electric capacity C1 is discharged by the 4th resistance R6.
Alternatively, voltage comparison module 35 includes：Voltage comparator U40, the 5th resistance R2, the 6th resistance R3, the 7th
Resistance R4, voltage comparator U40 normal phase input end are connected with the 5th resistance R2 first end, the 5th resistance R2 the second end
It is connected with the first power supply VBAT, the 5th resistance R2 first end is grounded by the 6th resistance R3, and voltage comparator U40's is anti-phase
Input is connected with the 4th resistance R6 first end, voltage comparator U40 output end and making for power management module PMIC
Energy end is connected, and voltage comparator U40 output end is connected by the 7th resistance R4 with the 5th resistance R2 the second end.
Alternatively, voltage comparison module 35 is connected with power management module PMIC.
Fig. 4 is a kind of flow of the hard reset control method of optional board information terminal according to embodiments of the present invention
Figure, as shown in figure 4, this method comprises the following steps：
Whether step S102, detection controlling switch close, wherein, controlling switch is opened for what is set on board information terminal
Close；
Step S104, in the case where detecting controlling switch closure, capacitor charge and discharge is controlled by level switch module
Module carries out electric capacity charging, wherein, voltage comparison module exports low level signal in electric capacity charging process, and low level signal is used
In instruction board information terminal power management module stop to board information terminal power, the first end of level switch module with
Controlling switch is connected, and the second end of level switch module is connected with the first end of capacitor charge and discharge module, and voltage ratio is compared with mould
The input of block is connected with the second end of capacitor charge and discharge module, output end and the power management module phase of voltage comparison module
Connection；
Step S106, in the case where detecting that controlling switch disconnects, capacitor charge and discharge is controlled by level switch module
Module carries out electric capacity electric discharge, wherein, voltage comparison module exports high level signal in electric capacity discharge process, and high level signal is used
Powered in instruction power management module to board information terminal.
By above-mentioned steps, detect whether the controlling switch set on board information terminal closes, detecting the control
In the case of switch closure, the electric capacity being connected with level switch module is controlled by the level switch module being connected with controlling switch
Charge-discharge modules charge to electric capacity, and control the power management module of board information terminal to stop to car using voltage comparison module
Carry information terminal power supply；In the case where detecting that the controlling switch disconnects, capacitor charge and discharge is controlled by level switch module
Module control electric capacity electric discharge, and control power management module to be powered to board information terminal using voltage comparison module, so as to
Whether to power, be realized to vehicle-mounted to board information terminal by the disconnection of controlling switch and closure, control power management module
Information terminal is resetted, and then solves board information terminal in the prior art because crashing or entering abnormal pattern
When, the technical problem of system hard reset can not be carried out.
As a kind of alternatively embodiment, in the case where detecting controlling switch closure, the embodiment can also include：
The charging interval of electric capacity is determined, wherein, capacitor charge and discharge module also includes 3rd resistor and the 4th resistance, and the first of 3rd resistor
End is connected with the first transistor, and the first transistor is connected with the second end of level switch module, the second end of 3rd resistor
It is connected with the first end of electric capacity, the second end ground connection of electric capacity, the first end of the 4th resistance is connected with the first end of electric capacity, the
The second end ground connection of four resistance, voltage comparison module include voltage comparator, the normal phase input end of voltage comparator and the 5th electricity
The first end of resistance is connected, and the second end of the 5th resistance is connected with the first power supply, and the first end of the 5th resistance passes through the 6th electricity
Resistance ground connection, the inverting input of voltage comparator is connected with the first end of the 4th resistance, the charging interval by electric capacity capacitance
And the resistance of 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance determines.
Using the above embodiment of the present invention, due to being to the charging circuit of the electric capacity charging in capacitor charge and discharge module, the
The first end of three resistance is connected with the first transistor, and the second end of 3rd resistor is connected with the first end of electric capacity, electric capacity
Second end is grounded, and the first end of the 4th resistance is connected with the first end of electric capacity, the second end ground connection of the 4th resistance, voltage ratio compared with
The normal phase input end of device is connected with the first end of the 5th resistance, and the second end of the 5th resistance is connected with the first power supply, and the 5th
The first end of resistance is connected by the 6th resistance eutral grounding, the inverting input of voltage comparator with the first end of the 4th resistance,
Therefore, the charging circuit includes 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, to the electricity in capacitor charge and discharge module
Appearance is charged, and electric capacity is reached predetermined capacitance, it is necessary to by 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance
Resistance determine time of charging, so as to the capacitance according to electric capacity and 3rd resistor, the 4th resistance, the 5th resistance,
The resistance of 6th resistance, it is accurate to determine the charging interval of electric capacity, and then the hardware reset time of board information terminal can be determined.
As a kind of alternatively embodiment, in the case where detecting that controlling switch disconnects, the embodiment can also include：
Determine the discharge time of electric capacity, wherein, discharge time by the capacitance and 3rd resistor of electric capacity, the 4th resistance, the 5th resistance,
The resistance of 6th resistance determines.
Using the above embodiment of the present invention, during being discharged by electric capacity, electric capacity can be reduced by discharge circuit
Interior capacitance, wherein, discharge circuit includes 3rd resistor, the 4th resistance, the 5th resistance and the 6th resistance, according to
Three resistance, the 4th resistance, the resistance of the 5th resistance and the 6th resistance can determine that electric capacity is released and disappear needed for the electricity of capacitance
The discharge time of consumption, and then the hardware reset time of board information terminal can be determined.
Present invention also offers a kind of preferred embodiment, the preferred embodiment provides a kind of board information terminal (TBOX)
The method of system hard reset.
Technical scheme provided by the invention, by giving system power management module (PMIC) power down, force on-vehicle information whole
Restart at end.
Circuit diagram as shown in Figure 3, circuit theory are as follows：
In the case of finding that board information terminal (TBOX) work is abnormal, board information terminal (TBOX) is pinned
SOS (S1) button 10 seconds (time can arbitrarily be set), board information terminal (TBOX) can are restarted automatically.
Alternatively, as the S1 that presses ＆ hold, a level shifting circuit is first passed through, triode Q4 base stage becomes low level, Q4
Conducting, its colelctor electrode become high level, and then Q1 base stage is high level, and Q1 is turned on, and Q1 colelctor electrode is changed into low level,
Cause Q3 to turn on again, then pass through resistance R1 and charged to C1, the inverting input of this control source to comparator U40, and
The voltage ratio of positive input is compared with when the voltage of reverse input end is more than or equal to the voltage of positive input, i.e.,
In the above embodiment of the present invention, comparator U40 output low levels, triggering board information terminal (TBOX) interior PMIC's
Enabled pin (EN), makes PMIC close output, stops closing to system power supply, system.Because electric capacity C1 initial voltage V0=0,
Then charging interval formula：T=RC*ln [V/ (V-Vt)], wherein, the t=charging intervals；The resistance of R=resistance；The appearance of C=electric capacity
Value；VtMagnitude of voltage on=any time electric capacity；V=electric capacity is full of final voltage value.
In the above embodiment of the present invention, R=R6/ (R6+R1), C=C1, V=[R6/ (R6+R1)] * VBAT, Vt=[R3/ (R3+
R2)] * VBAT, above parameter is brought into above-mentioned formula, and after arrangement, obtains the charging interval
As can be seen from the above equation, the charging interval can be determined by resistance R1, R2, R3, R6 and electric capacity C1.
Alternatively, when the button S1 that comes loose, electric capacity are discharged by R6, whenWhen,
Comparator U40 exports high level, system reboot.According to the electric discharge formula V of electric capacityt=V0+(V-V0) * [1-exp (- t/RC)] is together
Sample can be calculated from the time for unclamping button S1 to system reboot.
It is alternatively possible to the RC charging circuits being made up of resistance and electric capacity, determine button by how long needing system
Reset.
It is alternatively possible to by comparator, low and high level is exported, to control PMIC output.
According to the above embodiment of the present invention, can be crashed in board information terminal (TBOX) or when output abnormality,
In the case where Vehicular accumulator cell need not be disconnected, as long as pressing ＆ hold several seconds or more than ten seconds, so that it may so that circuit reset.Need
It is noted that in practical application scene, it is proposed that by the length of capacitor charging time setting a bit, if capacitor charging time is set
That puts is too short, i.e., the time that button S1 is pressed is too short, may produce false triggering when performing normal keypress function, and makes system
Power-down rebooting.
Alternatively, the button for controlling board information terminal (TBOX) to reset is not limited to SOS button, and other are connected in car
Carry the equally applicable present invention of button on information terminal (TBOX).
According to another aspect of the present invention, the embodiment of the present invention additionally provides a kind of storage medium, and storage medium includes depositing
The program of storage, wherein, equipment performs the hard reset of above-mentioned board information terminal where controlling storage medium when program is run
Control method.
According to another aspect of the present invention, the embodiment of the present invention additionally provides a kind of processor, and processor is used to run journey
Sequence, wherein, program performs the hard reset control method of above-mentioned board information terminal when running.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
In the above embodiment of the present invention, the description to each embodiment all emphasizes particularly on different fields, and does not have in some embodiment
The part of detailed description, it may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents, others can be passed through
Mode is realized.Wherein, device embodiment described above is only schematical, such as the division of the unit, Ke Yiwei
A kind of division of logic function, can there is an other dividing mode when actually realizing, for example, multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual
Between coupling or direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, unit or module
Connect, can be electrical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On unit.Some or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is used as independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part to be contributed in other words to prior art or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are causing a computer
Equipment (can be personal computer, server or network equipment etc.) perform each embodiment methods described of the present invention whole or
Part steps.And foregoing storage medium includes：USB flash disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can be with store program codes
Medium.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
- A kind of 1. hard reset control system of board information terminal, it is characterised in that including：Level switch module, first end are connected with controlling switch, and the second end is connected with the first end of capacitor charge and discharge module, For controlling the capacitor charge and discharge module to carry out electric capacity charging when the controlling switch closes, disconnected in the controlling switch When control the capacitor charge and discharge module to carry out electric capacity electric discharge；Voltage comparison module, input are connected with the second end of the capacitor charge and discharge module, and output end is whole with on-vehicle information The power management module at end is connected, and for exporting low level signal in the electric capacity charging process, is discharged in the electric capacity During export high level signal, wherein, the low level signal be used for indicate that the power management module stops to the car Information terminal power supply is carried, the high level signal is used to indicate that the power management module is powered to the board information terminal.
- 2. system according to claim 1, it is characterised in that the system also includes：The first transistor, respectively with the second end of the level switch module and the first end phase of the capacitor charge and discharge module Connection, for being turned on when the controlling switch closes to control the capacitor charge and discharge module to carry out electric capacity charging, described Disconnected when controlling switch disconnects to control the capacitor charge and discharge module to carry out electric capacity electric discharge.
- 3. system according to claim 2, it is characterised in that the voltage comparison module includes：Voltage comparator, wherein, the normal phase input end of the voltage comparator is connected with the first power supply, the voltage comparator Inverting input be connected with the second end of the capacitor charge and discharge module, the output end of the voltage comparator and the electricity Source control module is connected.
- 4. system according to claim 3, it is characterised in that the level switch module includes：Second transistor, the base stage of the second transistor are connected with the first end of the controlling switch, the controlling switch The second end ground connection, the emitter stage of the second transistor is connected with second source, and the colelctor electrode of the second transistor leads to Cross first resistor ground connection；Third transistor, the base stage of the third transistor are connected with the colelctor electrode of the second transistor, and the described 3rd is brilliant The grounded emitter of body pipe, the colelctor electrode of the third transistor are connected by second resistance with first power supply.
- 5. system according to claim 4, it is characterised in thatThe base stage of the first transistor is connected with the colelctor electrode of the third transistor, the emitter stage of the first transistor It is connected with first power supply, the colelctor electrode of the first transistor is connected by 3rd resistor with the first end of the electric capacity Connect, the second end ground connection of the electric capacity.
- 6. system according to claim 5, it is characterised in that the capacitor charge and discharge module includes：4th resistance, the first end of the 4th resistance are connected with the electric capacity, the second end ground connection of the 4th resistance, its In, in the case where the first transistor turns on, first power supply is charged by the 3rd resistor to the electric capacity, In the case that the first transistor disconnects, the electric capacity passes through the 4th conductive discharge.
- 7. system according to claim 6, it is characterised in thatThe normal phase input end of the voltage comparator is connected with the first end of the 5th resistance, the second end of the 5th resistance with First power supply is connected, the first end of the 5th resistance by the 6th resistance eutral grounding, the voltage comparator it is anti-phase Input is connected with the first end of the 4th resistance, the output end of the voltage comparator and the power management module Enable Pin is connected, and the output end of the voltage comparator is connected by the 7th resistance with the second end of the 5th resistance.
- A kind of 8. hard reset control method of board information terminal, it is characterised in that including：Whether detection controlling switch closes, wherein, the controlling switch is the switch set on board information terminal；In the case where detecting the controlling switch closure, capacitor charge and discharge module is controlled to carry out electricity by level switch module Capacity charge, wherein, voltage comparison module exports low level signal in the electric capacity charging process, and the low level signal is used for Indicate that the power management module of the board information terminal stops powering to the board information terminal, the level switch module First end be connected with the controlling switch, the of the second end of the level switch module and the capacitor charge and discharge module One end is connected, and the input of the voltage comparison module is connected with the second end of the capacitor charge and discharge module, the electricity The output end of pressure comparison module is connected with the power management module；In the case where detecting that the controlling switch disconnects, the capacitor charge and discharge mould is controlled by the level switch module Block carries out electric capacity electric discharge, wherein, the voltage comparison module described in the electric capacity discharge process exports high level signal, the height Level signal is used to indicate that the power management module is powered to the board information terminal.
- 9. according to the method for claim 8, it is characterised in that in the case where detecting the controlling switch closure, institute Stating method also includes：The charging interval of the electric capacity is determined, wherein, the capacitor charge and discharge module also includes 3rd resistor and the 4th resistance, institute The first end for stating 3rd resistor is connected with the first transistor, the second end of the first transistor and the level switch module It is connected, the second end of the 3rd resistor is connected with the first end of the electric capacity, the second end ground connection of the electric capacity, described The first end of 4th resistance is connected with the first end of the electric capacity, the second end ground connection of the 4th resistance, the voltage ratio Include voltage comparator compared with module, the normal phase input end of the voltage comparator is connected with the first end of the 5th resistance, described Second end of the 5th resistance is connected with the first power supply, and the first end of the 5th resistance passes through the 6th resistance eutral grounding, the electricity Pressure comparator inverting input be connected with the first end of the 4th resistance, the charging interval by the electric capacity electric capacity Value and the 3rd resistor, the 4th resistance, the 5th resistance, the resistance of the 6th resistance determine.
- 10. according to the method for claim 9, it is characterised in that in the case where detecting that the controlling switch disconnects, institute Stating method also includes：The discharge time of the electric capacity is determined, wherein, capacitance and threeth electricity of the discharge time by the electric capacity Resistance, the resistance of the 4th resistance, the 5th resistance, the 6th resistance determine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710543297.XA CN107491155B (en) | 2017-07-05 | 2017-07-05 | Hard reset control system and method for vehicle-mounted information terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710543297.XA CN107491155B (en) | 2017-07-05 | 2017-07-05 | Hard reset control system and method for vehicle-mounted information terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107491155A true CN107491155A (en) | 2017-12-19 |
| CN107491155B CN107491155B (en) | 2020-06-16 |
Family
ID=60644634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710543297.XA Active CN107491155B (en) | 2017-07-05 | 2017-07-05 | Hard reset control system and method for vehicle-mounted information terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107491155B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108538267A (en) * | 2018-04-20 | 2018-09-14 | 昆山龙腾光电有限公司 | Driving circuit and liquid crystal display device |
| CN109613969A (en) * | 2018-12-10 | 2019-04-12 | 浪潮(北京)电子信息产业有限公司 | SSD power supply circuit, capacitance management method, system, device and storage medium |
| CN110920545A (en) * | 2019-12-04 | 2020-03-27 | 华人运通(上海)云计算科技有限公司 | Emergency call switch fault detection circuit and car |
| CN111641406A (en) * | 2020-06-30 | 2020-09-08 | 湖南中车时代通信信号有限公司 | Power-off restart automatic control circuit |
| WO2021051636A1 (en) * | 2019-09-17 | 2021-03-25 | 中兴通讯股份有限公司 | Power failure protection circuit and method, data protection method, and electronic product |
| CN113178917A (en) * | 2021-05-12 | 2021-07-27 | 国网河北省电力有限公司保定供电分公司 | Charge and discharge management circuit, power supply device and charge and discharge management control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4534056A (en) * | 1982-08-26 | 1985-08-06 | Westinghouse Electric Corp. | Voice-recognition elevator security system |
| CN201113972Y (en) * | 2007-10-19 | 2008-09-10 | 深圳市同洲电子股份有限公司 | Level switching circuit |
| CN101338995A (en) * | 2008-06-04 | 2009-01-07 | 北京铱钵隆芯科技有限责任公司 | Electronic detonator control chip and its connection reliability checking method |
| CN105181095A (en) * | 2015-05-31 | 2015-12-23 | 吉林市东杰科技开发有限公司 | Unattended truck scale automatic detection and control equipment |
| CN204924258U (en) * | 2015-08-12 | 2015-12-30 | 成都亿盟恒信科技有限公司 | IC -card operating instrument of big dipper location shows and RFID mobile unit |
-
2017
- 2017-07-05 CN CN201710543297.XA patent/CN107491155B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4534056A (en) * | 1982-08-26 | 1985-08-06 | Westinghouse Electric Corp. | Voice-recognition elevator security system |
| CN201113972Y (en) * | 2007-10-19 | 2008-09-10 | 深圳市同洲电子股份有限公司 | Level switching circuit |
| CN101338995A (en) * | 2008-06-04 | 2009-01-07 | 北京铱钵隆芯科技有限责任公司 | Electronic detonator control chip and its connection reliability checking method |
| CN105181095A (en) * | 2015-05-31 | 2015-12-23 | 吉林市东杰科技开发有限公司 | Unattended truck scale automatic detection and control equipment |
| CN204924258U (en) * | 2015-08-12 | 2015-12-30 | 成都亿盟恒信科技有限公司 | IC -card operating instrument of big dipper location shows and RFID mobile unit |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108538267A (en) * | 2018-04-20 | 2018-09-14 | 昆山龙腾光电有限公司 | Driving circuit and liquid crystal display device |
| CN108538267B (en) * | 2018-04-20 | 2020-08-04 | 昆山龙腾光电股份有限公司 | Drive circuit and liquid crystal display device |
| CN109613969A (en) * | 2018-12-10 | 2019-04-12 | 浪潮(北京)电子信息产业有限公司 | SSD power supply circuit, capacitance management method, system, device and storage medium |
| WO2021051636A1 (en) * | 2019-09-17 | 2021-03-25 | 中兴通讯股份有限公司 | Power failure protection circuit and method, data protection method, and electronic product |
| CN110920545A (en) * | 2019-12-04 | 2020-03-27 | 华人运通(上海)云计算科技有限公司 | Emergency call switch fault detection circuit and car |
| CN111641406A (en) * | 2020-06-30 | 2020-09-08 | 湖南中车时代通信信号有限公司 | Power-off restart automatic control circuit |
| CN113178917A (en) * | 2021-05-12 | 2021-07-27 | 国网河北省电力有限公司保定供电分公司 | Charge and discharge management circuit, power supply device and charge and discharge management control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107491155B (en) | 2020-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107491155A (en) | The hard reset control system and method for board information terminal | |
| US11385298B2 (en) | Apparatus and method for diagnosing positive electrode contactor of battery pack | |
| CN107264309A (en) | A kind of control method of charging and discharging vehicle, device and automobile | |
| CN203445668U (en) | Distributed battery management system | |
| CN107745643A (en) | Charge control method, device and automobile | |
| CN112014617B (en) | Method, device and system for testing quiescent current of whole vehicle | |
| CN110774907A (en) | Detection and single wake-up circuit for charging CC signal | |
| CN113541250B (en) | Battery charging control circuit and electronic equipment | |
| CN105375544A (en) | Low-battery battery charging method and power management integrated circuit | |
| CN104714916A (en) | Detection system for plugging or unplugging of external equipment on USB interface | |
| CN114801876A (en) | Precharge control method, precharge control device, storage medium, processor and electronic device | |
| CN107782950B (en) | High voltage detection circuit and method, detector, battery system, vehicle and computer readable storage medium | |
| CN105974909A (en) | Automatic configuration box for automobile electronic test circuit | |
| CN111856297A (en) | In-bin battery on-site detection device in power change cabinet | |
| CN106706998A (en) | Terminal test system and terminal test method | |
| CN108879813B (en) | Proximity detection device and method | |
| CN114211994B (en) | Charging detection circuit, charging detection method and vehicle | |
| CN110126653A (en) | The proximity test circuit of onboard charger | |
| CN212965358U (en) | Broken line detection circuit with load access automatic wake-up function and power bank | |
| CN106130134A (en) | A kind of charging circuit and mobile terminal | |
| CN111537915A (en) | Broken string detection circuitry and treasured that charges of polymorphic type charging wire | |
| CN105630722B (en) | Electronic equipment and signal processing method | |
| CN211995249U (en) | Forklift vehicle-mounted power supply device and forklift charging system | |
| CN112666470A (en) | Method and device for judging whether power supply voltage of automobile electronic circuit system is undervoltage | |
| CN217198029U (en) | Automobile storage battery insufficient-power protection system and automobile storage battery insufficient-power protection box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |