CN110884448B - Power-off control module of communication unit - Google Patents
Power-off control module of communication unit Download PDFInfo
- Publication number
- CN110884448B CN110884448B CN201910987917.8A CN201910987917A CN110884448B CN 110884448 B CN110884448 B CN 110884448B CN 201910987917 A CN201910987917 A CN 201910987917A CN 110884448 B CN110884448 B CN 110884448B
- Authority
- CN
- China
- Prior art keywords
- power supply
- unit
- delay circuit
- power
- supply unit
- 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.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Electronic Switches (AREA)
Abstract
The invention discloses a power-off control module for a communication unit of an intelligent vehicle-mounted communication terminal, which comprises the following components: the main control unit is powered by the second power supply unit, and outputs a power-off instruction to the first delay circuit if the communication unit still fails after receiving a communication unit fault signal and executing a communication unit fault processing program; the first delay circuit is respectively connected with the second delay circuit and the first power supply unit, is suitable for enabling the output of the first power supply unit to be switched off after executing the first preset delay, and enables the second delay circuit to start the second preset delay; the second time delay circuit is connected with the first power supply unit and the vehicle-mounted power supply and is suitable for enabling the output of the first power supply unit to be started after second preset time delay is executed; the vehicle-mounted power supply is suitable for turning on the first power supply unit directly or through the second time delay circuit; a first power supply unit adapted to supply power to the second power supply unit and the communication unit. The invention can realize the short-time power-off automatic recovery function of the vehicle-mounted communication terminal communication unit, and can obviously reduce the production cost compared with the prior art.
Description
Technical Field
The invention relates to the field of intelligent automobiles, in particular to a power-off control module for a vehicle-mounted communication Terminal (TBOX) communication unit of an intelligent automobile.
Background
In the 21 st century today, communication technology has developed rapidly, and automobiles as islands of information have also begun to gradually establish contact with the outside world. According to the national standard requirement of technical Specifications of electric vehicle remote service and management systems (GB/T32960), vehicles (particularly intelligent vehicles) need to actively upload data to a vehicle network platform.
Therefore, the installation of a vehicle-mounted communication Terminal (TBOX) is becoming more and more urgent. The networked automobile provided with the vehicle-mounted TBOX has the functions of information interaction, vehicle control and the like, and has the characteristic of never powering off. The communication unit serving as a TBOX communication core runs for a long time, and is inevitably subjected to failure such as crash and the like which cannot be recovered, while the vehicle-mounted front-mounted TBOX is hidden according to the position, is inconvenient to detach and cannot be powered off manually, and the power supply of the communication unit can be turned off, which is a necessary requirement. The existing solution is to turn off the power supply of the communication module through a separate power supply chip or through a MOSFET switch, and the existing solution is relatively costly to implement.
Disclosure of Invention
The invention aims to provide a communication unit power-off control module which is used for an intelligent automobile and can automatically recover power supply after a vehicle-mounted communication terminal communication unit is powered off within a preset time period.
In order to solve the above technical problem, the present invention provides a communication unit power-off control module for automatically restoring power supply after a vehicle-mounted communication terminal is powered off within a preset time period, including:
the main control unit is powered by the second power supply unit, and outputs a power-off instruction to the first delay circuit if the communication unit still fails after receiving a communication unit fault signal and executing a communication unit fault processing program;
the first delay circuit is respectively connected with the second delay circuit and the first power supply unit and is suitable for enabling the output of the first power supply unit to be switched off after executing the first preset delay;
the second time delay circuit is connected with the first power supply unit and the vehicle-mounted power supply and is suitable for enabling the output of the first power supply unit to be started after second preset time delay is executed;
the vehicle-mounted power supply is suitable for turning on the first power supply unit directly or through the second time delay circuit;
a first power supply unit adapted to supply power to the second power supply unit and the communication unit.
Optionally, the power-off control module of the communication unit is further improved, further comprising: and the input end of the voltage stabilizing unit is connected with the vehicle-mounted power supply, and the output end of the voltage stabilizing unit is connected with the first power supply unit and the second delay circuit.
Optionally, the communication unit power-off control module is further improved, when the communication unit works normally, the vehicle-mounted power supply supplies power to the first power supply unit through the voltage stabilizing unit, and the first power supply unit supplies power to the main control unit and the communication unit.
Optionally, the communication unit power-off control module is further improved, when the communication unit fails, the main control unit outputs a power-off instruction, the first power supply unit is enabled to output and turn off after a first preset delay, the main control unit turns off the power supply and simultaneously changes the state of the power-off instruction output by the main control unit, the second delay circuit turns on the first power supply unit, the first power supply unit enables the output and turns on after a second preset delay, and the main control unit is powered back to enter the initialization.
Optionally, the power-off control module of the communication unit is further improved, and the main control unit is an MCU of the vehicle-mounted communication terminal.
Optionally, the power-off control module of the communication unit is further modified by a first delay circuit (a), a first terminal a1 of which is connected to the output terminal of the main control unit, a second terminal a2 of which is connected to ground, and a third terminal A3 of which is connected to a first terminal B1 of a second delay circuit.
Optionally, the power-off control module of the communication unit is further improved, and the first delay circuit a includes: the first resistor R1, the second resistor R2, the second end of the first capacitor C1 and the triode Q1;
a first resistor R1, a first end of which is connected to the first end A1 of the first delay circuit, and a second end of which is connected to the first end of the first capacitor C1, the first end of the second resistor R2 and the base of the triode Q1;
the second end of the second resistor R2, the second end of the first capacitor C1 and the emitter of the triode Q1 are connected with the second end A2 of the first delay circuit;
the collector of the transistor Q1 is connected to the third terminal A3 of the first delay circuit.
Optionally, the communication unit power-off control module is further modified by a second delay circuit B, a first end B1 of which is connected to the third end A3 of the first delay circuit and the first power supply unit enable pin EN, a second end B2 of which is connected to ground, and a third end B3 of which is connected to the first power supply unit input pin VIN and the vehicle power supply KL 30.
Optionally, the power-off control module of the communication unit is further improved, and the second delay circuit B includes: a third resistor R3, a fourth resistor R4 and a second capacitor C2;
the first end of the third resistor R3 and the first end of the second capacitor C2 are connected with the first end B1 of the second delay circuit;
a second end of the third resistor R3 and a second end of the second capacitor C2 are connected with a second end B2 of the second delay circuit;
the first end of the fourth resistor R4 is connected to the vehicle-mounted power source KL30 and the first power supply unit input pin VIN.
Optionally, the communication unit power-off control module is further modified, and the first power supply unit has an input pin VIN connected to the vehicle-mounted power supply KL30 and the third terminal B3 of the second delay circuit, an enable pin EN connected to the first terminal B1 of the second delay circuit and the third terminal A3 of the first delay circuit, and a bootstrap pin BST, a switch pin SW, an output voltage feedback pin FB, and a BIAS pin BIAS connected to the communication unit, the input pin IN of the second power supply unit, and the enable pin EN of the second power supply unit.
Optionally, the power-off control module of the communication unit is further improved, and the output pin OUT of the second power supply unit is connected to the MCU power supply terminal, and the output voltage feedback pin FB of the second power supply unit is connected to the MCU power supply terminal.
Optionally, the power-off control module of the communication unit is further modified, and the voltage stabilizing unit is a voltage stabilizing diode with an anode connected with the vehicle-mounted power supply KL30 and a cathode connected with the first power supply unit and the second delay circuit.
The working process of the invention is as follows:
when a vehicle-mounted communication Terminal (TBOX) is in a starting state, a vehicle-mounted communication terminal Main Control Unit (MCU) finds that the vehicle-mounted communication terminal cannot work normally, and after necessary processing (a prestored fault recovery program), the vehicle-mounted communication terminal cannot recover to be normal, and the main control unit starts the operation of short-time power failure. The main control unit issues a short-time power-off instruction, the short-time power-off instruction is transmitted to a first power supply unit (a main power supply chip MPQ9840) through a first delay circuit, the first power supply unit responds to the instruction of the main control unit, power output is closed, and the communication unit is powered off. Because the power supply of the main control unit is provided by the first power supply unit, the input of the second power supply unit is disconnected while the output of the first power supply unit is closed, the second power supply unit cannot output voltage to the main control unit, and the main control unit is powered off. After the main control unit is powered off, a short-time power-off instruction cannot be provided, the main control unit recovers work after passing through the second delay circuit, the first power supply unit outputs voltage, the communication unit supplies power normally, meanwhile, the main control unit also recovers power normally, and automatic power recovery after preset delay is achieved. The invention only uses 2 low-cost delay circuits and simple control circuits to realize the short-time power-off automatic recovery function of the vehicle-mounted communication terminal communication unit, and compared with the prior art, the invention can obviously reduce the production cost.
Drawings
The invention will be described in further detail with reference to the following detailed description and accompanying drawings:
fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a third embodiment of the present invention.
FIG. 4 is a timing diagram illustrating a third embodiment of the present invention.
Description of the reference numerals
First to fourth resistors R1 to R4
First to second capacitors C1-C2
Triode Q1
Main control unit MCU
First delay circuit A
First end A1 of first delay circuit
Second end A2 of first delay circuit
Third terminal A3 of first delay circuit
Second delay circuit B
Third terminal B1 of second delay circuit
Third terminal B2 of second delay circuit
Third terminal B3 of second delay circuit
Third terminal A3 of first delay circuit
First power supply unit MPQ9840
Second power supply unit MPQ2019
First power supply unit U1
Second power supply unit U2
Communication unit T
Voltage stabilization unit D1
MCU power supply end VCCMCU
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and technical effects of the present invention will be fully apparent to those skilled in the art from the disclosure in the specification. The invention is capable of other embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the general spirit of the invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
As shown in fig. 1, a first embodiment of a power-off control module of a communication unit according to the present invention includes:
the main control unit MCU is powered by the second power supply unit, and outputs a power-off instruction to the first delay circuit if the communication unit still fails after receiving a communication unit fault signal to execute a communication unit fault processing program;
the first delay circuit a is respectively connected with the second delay circuit B and the first power supply unit U1, and is adapted to enable the output of the first power supply unit U1 to be turned off after executing a first preset delay t 1;
the second delay circuit B is connected with the first power supply unit U1 and the vehicle-mounted power supply KL30, and is adapted to enable the output of the first power supply unit U1 to be turned on after executing a second preset delay t 2;
a vehicle-mounted power supply KL30 adapted to turn on the first power supply unit U1 directly or through the second delay circuit B;
a first power supply unit U1 adapted to supply power T to the second power supply unit U2 and the communication unit.
And if the main control unit of the vehicle-mounted communication terminal still fails after the main control unit receives the fault signal of the communication unit and executes the fault processing program of the communication unit, the main control unit starts the operation of short-time power failure. The main control unit issues a short-time power-off instruction, the short-time power-off instruction is transmitted to the first power supply unit (MPQ9840) through the first delay circuit, the first power supply unit responds to the instruction of the main control unit, the power output is closed, and the communication unit is powered off. Because the power supply of the main control unit is provided by the first power supply unit, the input of the second power supply unit is disconnected while the output of the first power supply unit is closed, the second power supply unit cannot output voltage to the main control unit, and the main control unit is powered off. After the main control unit is powered off, a short-time power-off instruction cannot be provided, the main control unit recovers work after passing through the second delay circuit, the first power supply unit outputs voltage, the communication unit supplies power normally, meanwhile, the main control unit also recovers power normally, and automatic power recovery after preset delay is achieved.
As shown in fig. 2, a second embodiment of a power-off control module of a communication unit according to the present invention includes:
the main control unit MCU is powered by the second power supply unit, and outputs a power-off instruction to the first delay circuit if the communication unit still fails after receiving a communication unit fault signal to execute a communication unit fault processing program;
the first end A1 of the first delay circuit A is connected with the output end of the main control unit, the second end A2 of the first delay circuit A is connected with the ground, the third end A3 of the first delay circuit A is connected with the first end B1 of the second delay circuit A, and the first delay circuit A is suitable for enabling the output of the first power supply unit to be turned off after executing the first preset delay;
a first end B1 of the second delay circuit B is connected to a third end A3 of the first delay circuit and the enable pin EN of the first power supply unit, a second end B2 of the second delay circuit B is connected to ground, a third end B3 of the second delay circuit B is connected to the input pin VIN of the first power supply unit and the KL30 of the vehicle-mounted power supply, and the second delay circuit B is adapted to enable the output of the first power supply unit to be turned on after executing a second preset delay;
a vehicle-mounted power supply KL30 adapted to turn on the first power supply unit directly or through a second delay circuit;
a first power supply unit U1 adapted to supply power to the second power supply unit U2 and the communication unit T;
and the input end of the voltage stabilizing unit D1 is connected with the vehicle-mounted power supply, and the output end of the voltage stabilizing unit D1 is connected with the first power supply unit and the second delay circuit.
When the communication unit works normally, the vehicle-mounted power supply supplies power to the first power supply unit through the voltage stabilizing unit, and the first power supply unit supplies power to the main control unit and the communication unit.
When the communication unit is in failure, the main control unit outputs a power-off command, the first power supply unit is enabled to output and turn off after a first preset delay, the main control unit supplies power and turns off while the power-off command output by the main control unit changes in state, the second delay circuit turns on the first power supply unit, the first power supply unit enables output and turns on after a second preset delay, and the main control unit restores power supply and enters initialization.
As shown in fig. 3, a power-off control module of a communication unit according to a third embodiment of the present invention includes:
the main control unit MCU is powered by the second power supply unit, and outputs a power-off instruction to the first delay circuit if the communication unit still fails after receiving a communication unit fault signal to execute a communication unit fault processing program;
the first end A1 of the first delay circuit A is connected to the output end of the main control unit, the second end A2 thereof is connected to ground, and the third end A3 thereof is connected to the first end B1 of the second delay circuit. The first delay circuit a includes: the first resistor R1, the second resistor R2, the second end of the first capacitor C1 and the triode Q1;
a first resistor R1, a first end of which is connected to the first end A1 of the first delay circuit, and a second end of which is connected to the first end of the first capacitor C1, the first end of the second resistor R2 and the base of the triode Q1;
the second end of the second resistor R2, the second end of the first capacitor C1 and the emitter of the triode Q1 are connected with the second end A2 of the first delay circuit;
the collector of the transistor Q1 is connected to the third terminal A3 of the first delay circuit.
The first end B1 of the second delay circuit B is connected to the third end A3 of the first delay circuit and the enable pin EN of the first power supply unit, the second end B2 of the second delay circuit B is connected to ground, and the third end B3 of the second delay circuit B is connected to the input pin VIN of the first power supply unit and the KL30 of the vehicle power supply. The second delay circuit B includes: a third resistor R3, a fourth resistor R4 and a second capacitor C2;
the first end of the third resistor R3 and the first end of the second capacitor C2 are connected with the first end B1 of the second delay circuit;
a second end of the third resistor R3 and a second end of the second capacitor C2 are connected with a second end B2 of the second delay circuit;
the first end of the fourth resistor R4 is connected to the vehicle-mounted power source KL30 and the first power supply unit input pin VIN.
The vehicle-mounted power supply is suitable for turning on the first power supply unit directly or through the second time delay circuit;
the input pin VIN of the first power supply unit is connected with the vehicle-mounted power supply KL30 and the third end B3 of the second delay circuit, the enable pin EN of the first power supply unit is connected with the first end B1 of the second delay circuit and the third end A3 of the first delay circuit, the bootstrap pin BST, the switch pin SW, the output voltage feedback pin FB and the BIAS pin BIAS of the first power supply unit are connected with the communication unit, the input pin IN of the second power supply unit and the enable pin EN of the second power supply unit, and the output voltage feedback pin FB is also connected with the ground.
And an output pin OUT of the second power supply unit is connected with the power supply end of the MCU and is grounded, and an output voltage feedback pin FB of the second power supply unit is connected with the power supply end of the MCU and is grounded.
And the input end of the voltage stabilizing unit is connected with the vehicle-mounted power supply, and the output end of the voltage stabilizing unit is connected with the first power supply unit and the second delay circuit.
When the communication unit works normally, the vehicle-mounted power supply KL30 supplies power to the first power supply unit MPQ9840 through the voltage stabilizing unit D1, the MCU controls short-time power failure to be invalid, the MCU outputs low level, the triode Q1 is cut off, the enabling end of the first power supply unit MPQ9840 supplies power through the fourth resistor R4, the first power supply unit MPQ9840 outputs voltage normally, and the communication unit and the MCU work normally.
When the communication unit is in failure, the MCU controls the short-time power-off enable, the MCU outputs a high level, the enable end of the first power supply unit MPQ9840 is disabled through a delay circuit composed of a first resistor R1 and a first capacitor C1, after a delay t1, the transistor Q1 is turned on, the output of the first power supply unit MPQ9840 is turned off, the power supply of the communication unit and the input of the first power supply unit MPQ2019 are turned off, the power supply of the MCU is turned off, meanwhile, the short-time power-off enable end output by the MCU is changed to a low level, the transistor Q1 is turned off, the vehicle-mounted power supply KL30 turns on the first power supply unit MPQ9840 through a delay circuit composed of a third resistor R3, a fourth resistor R4 and a second capacitor C2, after a delay t2, the enable end of the first power supply unit MPQ9840 is enabled, the first power supply unit MPQ9840 outputs work, the power supply of the MCU is recovered, the vehicle-mounted communication terminal TBOX enters a normal working process, and.
In this embodiment, the voltage regulator unit is a voltage regulator diode D1 having an anode connected to the vehicle-mounted power supply KL30 and a cathode connected to the first power supply unit and the second delay circuit.
The third embodiment is the most preferred embodiment provided by the present invention based on the premise of saving cost, and on the basis of the working principle (control timing) of the present invention, those skilled in the art can also develop other more complex first and second delay circuits to implement the functions of the present invention, but the cost is increased compared with the embodiments of the first and second delay circuits provided by the present invention.
The present invention has been described in detail with reference to the specific embodiments and examples, but these are not intended to limit the present invention. Many variations and modifications may be made by one of ordinary skill in the art without departing from the principles of the present invention, which should also be considered as within the scope of the present invention.
Claims (12)
1. A communication unit outage control module is used for the communication unit of intelligent automobile vehicle-mounted communication terminal, its characterized in that includes:
the main control unit is powered by the second power supply unit, and outputs a power-off instruction to the first delay circuit if the communication unit still fails after receiving a communication unit fault signal and executing a communication unit fault processing program;
the first delay circuit is respectively connected with the second delay circuit and the first power supply unit, is suitable for enabling the output of the first power supply unit to be switched off after executing the first preset delay, and enables the second delay circuit to start the second preset delay;
the second time delay circuit is connected with the first power supply unit and the vehicle-mounted power supply and is suitable for enabling the output of the first power supply unit to be started after second preset time delay is executed;
the vehicle-mounted power supply is suitable for turning on the first power supply unit directly or through the second time delay circuit;
a first power supply unit adapted to supply power to the second power supply unit and the communication unit.
2. The communication unit power-off control module of claim 1, further comprising: and the input end of the voltage stabilizing unit is connected with the vehicle-mounted power supply, and the output end of the voltage stabilizing unit is connected with the first power supply unit and the second delay circuit.
3. The communications unit power-off control module of claim 2, wherein:
when the communication unit works normally, the vehicle-mounted power supply supplies power to the first power supply unit through the voltage stabilizing unit, and the first power supply unit supplies power to the main control unit and the communication unit.
4. The communications unit power-off control module of claim 1, wherein:
when the communication unit is in failure, the main control unit outputs a power-off command, the first power supply unit is enabled to output and turn off after a first preset delay, the main control unit supplies power and turns off while the power-off command output by the main control unit changes in state, the second delay circuit turns on the first power supply unit, the first power supply unit enables output and turns on after a second preset delay, and the main control unit restores power supply and enters initialization.
5. The communications unit power-off control module of claim 1, wherein: the main control unit is an MCU of the vehicle-mounted communication terminal.
6. The communications unit power-off control module of claim 1, wherein:
the first end (A1) of the first delay circuit (A) is connected with the output end of the main control unit, the second end (A2) of the first delay circuit (A) is connected with the ground, and the third end (A3) of the first delay circuit (A1) is connected with the first end (B1) of the second delay circuit.
7. The communication unit power-off control module of claim 6, wherein the first delay circuit (a) comprises: the circuit comprises a first resistor (R1), a second resistor (R2), a second end of a first capacitor (C1) and a triode (Q1);
a first resistor (R1), the first end of which is connected with the first end (A1) of the first delay circuit, and the second end of which is connected with the first end of the first capacitor (C1), the first end of the second resistor (R2) and the base of the triode (Q1);
the second end of the second resistor (R2), the second end of the first capacitor (C1) and the emitter of the triode (Q1) are connected with the second end (A2) of the first delay circuit;
the collector of the triode (Q1) is connected with the third end (A3) of the first time delay circuit.
8. The communications unit power-off control module of claim 1, wherein:
and a first end (B1) of the second delay circuit (B) is connected with a third end (A3) of the first delay circuit and the enabling pin (EN) of the first power supply unit, a second end (B2) of the second delay circuit (B) is connected with the ground, and a third end (B3) of the second delay circuit (B) is connected with the input pin (VIN) of the first power supply unit and the vehicle-mounted power supply (KL 30).
9. The communication unit power down control module of claim 8, wherein the second delay circuit (B) comprises: a third resistor (R3), a fourth resistor (R4) and a second capacitor (C2);
a first end of a third resistor (R3) and a first end of a second capacitor (C2) are connected with a first end (B1) of the second delay circuit;
a second end of the third resistor (R3) and a second end of the second capacitor (C2) are connected with a second end (B2) of the second delay circuit;
the first end of the fourth resistor (R4) is connected with the vehicle-mounted power supply (KL 30) and the input pin (VIN) of the first power supply unit.
10. The communications unit power-off control module of claim 8, wherein:
and an input pin (VIN) of the first power supply unit is connected with a vehicle-mounted power supply (KL 30) and a third end (B3) of the second delay circuit, an enable pin (EN) of the first power supply unit is connected with a first end (B1) of the second delay circuit and a third end (A3) of the first delay circuit, and a bootstrap pin (BST), a switch pin (SW), an output voltage feedback pin (FB) and a BIAS pin (BIAS) of the first power supply unit are connected with a communication unit, an input pin (IN) of the second power supply unit and an enable pin (EN) of the second power supply unit.
11. The communications unit power-off control module of claim 10, wherein:
and an output pin (OUT) of the second power supply unit is connected with the MCU power supply end, and an output voltage feedback pin (FB) of the second power supply unit is connected with the MCU power supply end.
12. The communications unit power-off control module of claim 2, wherein: the anode of the voltage stabilizing unit is connected with a vehicle-mounted power supply (KL 30), and the cathode of the voltage stabilizing unit is connected with a voltage stabilizing diode of the first power supply unit and the second delay circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910987917.8A CN110884448B (en) | 2019-10-17 | 2019-10-17 | Power-off control module of communication unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910987917.8A CN110884448B (en) | 2019-10-17 | 2019-10-17 | Power-off control module of communication unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110884448A CN110884448A (en) | 2020-03-17 |
| CN110884448B true CN110884448B (en) | 2021-06-08 |
Family
ID=69746274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910987917.8A Active CN110884448B (en) | 2019-10-17 | 2019-10-17 | Power-off control module of communication unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110884448B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111497762B (en) * | 2020-04-09 | 2021-08-06 | 东风汽车集团有限公司 | double-CPU control system and control method for automobile electronic controller |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7427912B1 (en) * | 1998-01-08 | 2008-09-23 | Intermec Ip Corp. | Method and system for storage and recovery of vital information on radio frequency transponders |
| JP5772716B2 (en) * | 2012-05-21 | 2015-09-02 | 株式会社デンソー | Electronic control unit |
| KR101894865B1 (en) * | 2017-02-14 | 2018-09-04 | 주식회사 바스맨테크놀러지 | Reset time delay circuit depending on teperature change |
| CN209231858U (en) * | 2019-01-14 | 2019-08-09 | 惠州市德赛工业研究院有限公司 | A kind of system in case of system halt charging reset circuit |
| CN110262647B (en) * | 2019-06-27 | 2021-05-25 | 无锡睿勤科技有限公司 | CMOS data clearing circuit and computer equipment |
-
2019
- 2019-10-17 CN CN201910987917.8A patent/CN110884448B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110884448A (en) | 2020-03-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110884448B (en) | Power-off control module of communication unit | |
| CN110920392B (en) | Power supply control circuit, power supply control method and new energy automobile | |
| CN108349449B (en) | Method for managing the power supply of an electronic control unit during a starting phase of a motor vehicle | |
| CN216034201U (en) | Dormancy awakening control circuit of automobile body controller | |
| US11372470B2 (en) | Control system for controlling intelligent system to reduce power consumption based on bluetooth device | |
| US9705323B2 (en) | Power supply system and power control circuit thereof | |
| CN218547453U (en) | Reset control circuit and intelligence lock based on watchdog chip | |
| CN209200761U (en) | The power transfer device of vehicle-mounted T-BOX, vehicle-mounted T-BOX | |
| CN210514981U (en) | Switching circuit for subway equipment | |
| CN207977898U (en) | The voltage compensating circuit of vehicle systems basic chips | |
| CN114194319A (en) | Electric vehicle starting device and electric vehicle | |
| CN207689874U (en) | Microcontroller automatic shutdown circuitry | |
| CN112653215A (en) | Method and system for reducing static power consumption of vehicle-mounted power supply | |
| CN108803399B (en) | Vehicle controller and control method thereof | |
| CN105629830A (en) | Power management method for interconnected automobile electronic device | |
| CN217769862U (en) | Low quiescent current's power control circuit, vehicle mounted power | |
| JP6604312B2 (en) | Power control device | |
| CN216565656U (en) | Driving circuit applied to dynamic daytime running light | |
| CN218558770U (en) | Dormancy awakening circuit of automobile electronic controller | |
| CN220421812U (en) | TBOX (tunnel boring oxide) abnormality repair circuit and vehicle | |
| CN114333683B (en) | System and method for reducing static current of display device | |
| CN216351856U (en) | Controller with thing networking intelligent control function | |
| US11953964B2 (en) | Ethernet power supply and power saving method of controlling the same | |
| CN220764304U (en) | Vehicle OBD2 interface power taking system for synchronous ACC | |
| CN220122892U (en) | TBOX (tunnel boring oxide) abnormality repair circuit and vehicle |
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 | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210125 Address after: No. 390, Wukang Road, Xuhui District, Shanghai 200031 Applicant after: SAIC MOTOR Corp.,Ltd. Applicant after: DIAS AUTOMOTIVE ELECTRONIC SYSTEM Co.,Ltd. Address before: 201206 4th floor, building 4, Lane 33, Jinji Road, Pudong New Area, Shanghai Applicant before: DIAS AUTOMOTIVE ELECTRONIC SYSTEM Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |