CN201975818U - Power management and deadlock protective control device for vehicle locating and tracking facility - Google Patents
Power management and deadlock protective control device for vehicle locating and tracking facility Download PDFInfo
- Publication number
- CN201975818U CN201975818U CN2011200408366U CN201120040836U CN201975818U CN 201975818 U CN201975818 U CN 201975818U CN 2011200408366 U CN2011200408366 U CN 2011200408366U CN 201120040836 U CN201120040836 U CN 201120040836U CN 201975818 U CN201975818 U CN 201975818U
- Authority
- CN
- China
- Prior art keywords
- circuit
- ldo
- comparator
- voltage
- power supply
- 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.)
- Expired - Fee Related
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 13
- 238000005070 sampling Methods 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 7
- 229910052744 lithium Inorganic materials 0.000 description 7
- 101100236764 Caenorhabditis elegans mcu-1 gene Proteins 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
Images
Landscapes
- Secondary Cells (AREA)
Abstract
The utility model relates to a power management and deadlock protective control device for vehicle locating and tracking facility, comprising a MCU, a first comparator, a second comparator, a first voltage sampling circuit, a power pre-stage protection circuit, a DC-DC circuit, a charging management circuit, a internal battery, a second voltage sampling circuit, a first LDO, a second LDO, a third LDO and a communication module. Compared with the present technology, the utility model has the advantages of clear structure, capable of writing the watchdog time, suitable for the slow start circuit, automatic switch of the internal battery and external battery, prolonging the battery life.
Description
Technical field
The utility model relates to a kind of vehicle positioning tracing equipment, especially relates to a kind of power management and anti-deadlock control device of vehicle positioning tracing equipment.
Background technology
Vehicle location follow-up service end product, usually adopt GPS technology, the communication technology for example GSM, CDMA, 3G etc. and microprocessor (MCU, ARM7, ARM9 etc.), the basic function of major product is suitable, all comprise vehicle location, functions such as anti-theft and anti-robbing warning, vehicle oil-break power break, display scheduling information.
Existing product technology state is as follows:
1) the electrical equipment general structure is power supply, GPS module, GSM, microprocessor and universal I, analog input etc. usually;
2) the corresponding DC-DC circuit that adopts, vehicle-mounted power supply 9V is to 36V
3) use ADC to detect outer power voltage, use host CPU control DC-DC circuit to open and close, thereby realize the switching of external power source and internal cell;
4) use hardware watchdog Circuit management host CPU running state of programs, when program crashes, restart host CPU.
5) adopt host CPU, GPS module, communication module etc. on the circuit framework usually, adopt the order that powers up of host CPU management GPS module and communication module.
Its shortcoming is:
1) if the CPU that uses communication module when vehicle location follow-up service end product during as the CPU of application program, if application program takes place to crash, because communication module is long start-up time, and when causing application program can't be in time to feed hardware watchdog, communication module can be caused terminal to start shooting by the hardware watchdog frequent recovery;
2) can't realize software control the operate time of house dog;
3) lack terminal equipment internal cell management, when running down of battery automatically behind the shutdown mold closing piece, if there is not human intervention, communication module is automatically actuated problem during power up externally.
The utility model content
The purpose of this utility model is exactly to provide a kind of clear in structure, programmable watchdog time, adaptation slow start circuit for the defective that overcomes above-mentioned prior art existence, and the internal-external battery automaticallyes switch and prolongs power management and the anti-deadlock control device that internal cell exhausts the vehicle positioning tracing equipment of time.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of power management of vehicle positioning tracing equipment and anti-deadlock control device; it is characterized in that; comprise MCU; first comparator; second comparator; first voltage sample circuit; power supply prime protective circuit; the DC-DC circuit; charge management circuit; internal cell; second voltage sample circuit; the one LDO; the 2nd LDO; the 3rd LDO; communication module; described power supply prime protective circuit is connected with first comparator by first voltage sample circuit; described MCU respectively with first comparator; second comparator; the DC-DC circuit; the one LDO; the 2nd LDO; the 3rd LDO; communication module connects; described power supply prime protective circuit is connected with the DC-DC circuit; described DC-DC circuit is connected with charge management circuit; described charge management circuit; internal cell; second voltage sample circuit; the one LDO; the 2nd LDO; connect in twos between the 3rd LDO; described communication module respectively with charge management circuit; the one LDO connects, and described second voltage sample circuit is connected with second comparator.
Described DC-DC circuit is converted into the circuit of 5V DC for 9-36V DC.
A described LDO, the 3rd LDO are the LDO that band turn-offs control.
Described MCU is 8 single-chip microcomputers of NXP.
Compared with prior art, the utlity model has following advantage:
1), thereby satisfies the requirement to the management that powers on such as the equipment that starts communication module slowly with the chip microcontroller programmable watchdog time;
2) whether the slow starting device of adaptive judgement powers on for the first time, thereby avoids owing to slow starting device can not normally be fed the logic conflict that dog brings between the starting period;
3) by first comparator, detect outside vehicle-mounted voltage and whether satisfy the assigned voltage value, service time and number of times are united judgement and are confirmed the externally fed magnitude of voltage and avoid outside internal cell frequently to switch;
4) by second comparator, determine the magnitude of voltage of internal cell, service time and number of times are united the error cut-off machine of judging affirmation internal supply voltage value and avoiding communication module;
5) power supply that can the communication close module (milliampere level electric current), and only keep watchdog circuit power supply (microampere order), delayed the running down of battery time greatly;
6) even running down of battery externally during service restoration, also can start the terminal power supply.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a workflow diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment
As shown in Figure 1; a kind of power management of vehicle positioning tracing equipment and anti-deadlock control device; comprise MCU1; first comparator 2; second comparator 3; first voltage sample circuit 4; power supply prime protective circuit 5; DC-DC circuit 6; charge management circuit 7; internal cell 8; second voltage sample circuit 9; the one LDO10; the 2nd LDO11; the 3rd LDO12; communication module 13; described power supply prime protective circuit 5 is connected with first comparator 2 by first voltage sample circuit 4; described MCU1 respectively with first comparator 2; second comparator 3; DC-DC circuit 6; the one LDO10; the 2nd LDO11; the 3rd LDO12; communication module 13 connects; described power supply prime protective circuit 5 is connected with DC-DC circuit 6; described DC-DC circuit 6 is connected with charge management circuit 7; described charge management circuit 7; internal cell 8; second voltage sample circuit 9; the one LDO10; the 2nd LDO11; connect in twos between the 3rd LDO12; described communication module 13 respectively with charge management circuit 7; the one LDO10 connects, and described second voltage sample circuit 9 is connected with second comparator 3.
Wherein the function of each assembly is as follows:
1) power supply prime protective circuit 5 guarantees that the DC-DC power supply adapts to the recoil of vehicle power supply, overcurrent etc.; Input voltage range 9V-36VDC;
2) the DC-DC circuit 6: vehicle power is converted into the terminal equipment power requirement magnitude of voltage of internal request, can be set by circuit, 5V is each parts general supply of complete machine inside usually; This DC-DC circuit 6 is controlled by MCU, and when externally cell voltage was lower than thresholding, DC-DC circuit 6 was closed;
3) charge management circuit 7: from DC-DC circuit 6 output power takings, internal cell 8 is carried out Charge Management and provides general supply for communication module 13;
4) cell voltage sample circuit: be made up of bleeder circuit, different protection magnitudes of voltage are divided into corresponding threshold voltage;
5) battery voltage detection circuit: constitute by the two-way comparator; Battery sampling voltage and MCU supply power voltage are compared, be lower than the MCU supply power voltage, comparator output low level, otherwise output high level if be checked through exterior vehicle power supply sampling voltage;
6) linear voltage-stabilizing circuit: a LDO10 and the 3rd LDO12 have the control end of enabling, and accept external signal control voltage and export or close.The one LDO10 gives communication module VBB power supply; The 3rd LDO12 gives other circuit supplies in the circuit.The 2nd LDO11 is used for the power supply to MCU, and while the 2nd LDO11 output voltage is the reference level of device as a comparison.
7) MCU: adopt single chip microcomputer, operation terminal power management and the software management software that do not crash.Function is as follows:
Be lower than the single-chip microcomputer supply power voltage if be checked through exterior vehicle power supply sampling voltage, when the programming stipulated time reached with time number average, single-chip microcomputer cut out the DC-DC circuit, stopped this machine and used vehicle power supply;
Be higher than the single-chip microcomputer supply power voltage if be checked through exterior vehicle power supply sampling voltage, when the programming stipulated time reached with time number average, single-chip microcomputer was opened the DC-DC circuit, recovered to use the external cell power supply.
Be lower than the single-chip microcomputer supply power voltage if be checked through inner lithium battery source sampling voltage, when the programming stipulated time reached with time number average, single-chip microcomputer cut out external interface circuit LDO and communication module baseband circuit LDO, stops entire equipment work;
Be higher than the single-chip microcomputer supply power voltage if be checked through inner lithium battery source sampling voltage, when the programming stipulated time reached with time number average, single-chip microcomputer was opened external interface circuit LDO and communication module baseband circuit LDO, recovered entire equipment work;
If the equipment that is checked through powers on for the first time, single-chip microcomputer is opened DC-DC and each road LDO, after the stand-by period that powers on of waiting for programmed settings, opens the watchdog microcontroller function;
If single-chip microcomputer can not can be received the Watch Dog signal of host CPU at the programming official hour, single-chip microcomputer cuts out the DC-DC circuit, to opening the DC-DC circuit after the system cut-off programmed settings time again, the whole terminal system is finished outage start.
Adopt multichannel band control LDO to realize that multichannel powers respectively: to comprise to the power supply of communication equipment base band, to the peripheral interface equipment power supply, to the power supply of single-chip microcomputer.LDO output stable voltage is selected by concrete application.
Each assembly composed as follows:
1, use resettable fuse, piezo-resistance, voltage-stabiliser tube, triode and the IRF6116 of IRF company rectifier to finish power supply prime protective circuit 5;
2, use DC-DC circuit (TI company's T PS5430 chip), the DC9V-36V vehicle power is transformed the 5V power supply use for terminal inner;
3, connect the 5V power supply of DC-DC circuit output, charge management circuit (selecting GS1405 for use) carries out Charge Management to the 3.7V lithium battery, and this charging circuit output is for connecting communication module VBAT input;
4, the LDO (5V-3.0V) that uses 2 bands to turn-off control gives the power supply of external circuit and communication module baseband portion respectively;
5, use 1 independently LDO (5V-3.3V) to the MCU power supply, this 3.3V reference voltage of device as a comparison simultaneously.
6, voltage sample circuit has electric resistance partial pressure to realize, according to the action thresholding of setting, is benchmark with 3.3V, chooses the divider resistance value.
7, communication module adopts AZ801 or the tight Fusion Module of AZ802GPS/GSM, and application program operates in the GSM chip and moves, and when program is normally moved, sends 1 watch dog signal and gives MCU in per 5 seconds.
8, MCU adopts 8 single-chip microcomputers (model P89LPC901) of NXP, as terminal power management and the software higher management that do not crash.Do not obtain Watch Dog signal and determine application software when stopping at MCU, by controlled LDO outage, power up the recovery system operation again.
9, adopt general LM2093 two-way voltage comparator to check exterior vehicle cell voltage and lithium battery voltage, when Vehicular battery voltage is lower than thresholding, notice MCU, MCU closes the DC-DC circuit, stops terminal equipment and uses vehicle power supply; When detecting lithium battery and force down, close whole module by the VBB that closes AZ801 or AZ802.Externally Vehicular battery voltage recovers just often, recovers to use vehicle power supply.
As shown in Figure 2, workflow of the present utility model is as follows:
After step 104, MCU receive watchdog pulse, open house dog;
The utility model purpose provides a kind of power management and anti-deadlock control device of vehicle positioning tracing equipment, support the seamless switching of outside vehicle power and internal cell, and adapt to the power supply management of slow start-up time equipment and the watchdog circuit of programmable time, prevent that software from crashing.
The utility model module realizes that the utility model special feature is outside conventional power source management and the watchdog function:
1) with the programmable house dog of the chip microcontroller time, thereby satisfy slow starting device, for example equipment such as communication module is to the requirement of the management that powers on; The watchdog pulse high-low level changes 5 seconds once.
2) whether the slow starting device that need control of adaptive judgement powers on for the first time, when initially powering on, after the time of programmable, restart the house dog hypervisor, thereby avoid owing to slow starting device can not normally be fed the logic conflict that dog brings between the starting period;
3) by first comparator, detect outside vehicle-mounted voltage and whether satisfy the assigned voltage value, length standard was judged affirmation externally fed magnitude of voltage and was avoided outside internal cell frequently to switch service time;
4) by second comparator, determine the magnitude of voltage of internal cell, service time, length standard was judged the error cut-off machine of confirming the internal supply voltage value and avoiding equipment;
5) can close slow starting device, for example power supply of communication module (milliampere level electric current), and only keep watchdog circuit power supply (microampere order), thus delayed the running down of battery time greatly;
6) even the watchdog circuit that single-chip microcomputer is made in the device interior running down of battery automatically after the shutdown, externally during service restoration, also can recover the terminal power supply automatically.
Claims (4)
1. the power management of a vehicle positioning tracing equipment and anti-deadlock control device; it is characterized in that; comprise MCU; first comparator; second comparator; first voltage sample circuit; power supply prime protective circuit; the DC-DC circuit; charge management circuit; internal cell; second voltage sample circuit; the one LDO; the 2nd LDO; the 3rd LDO; communication module; described power supply prime protective circuit is connected with first comparator by first voltage sample circuit; described MCU respectively with first comparator; second comparator; the DC-DC circuit; the one LDO; the 2nd LDO; the 3rd LDO; communication module connects; described power supply prime protective circuit is connected with the DC-DC circuit; described DC-DC circuit is connected with charge management circuit; described charge management circuit; internal cell; second voltage sample circuit; the one LDO; the 2nd LDO; connect in twos between the 3rd LDO; described communication module respectively with charge management circuit; the one LDO connects, and described second voltage sample circuit is connected with second comparator.
2. the power management of a kind of vehicle positioning tracing equipment according to claim 1 and anti-deadlock control device is characterized in that described DC-DC circuit is converted into the circuit of 5V DC for 9-36V DC.
3. the power management of a kind of vehicle positioning tracing equipment according to claim 1 and anti-deadlock control device is characterized in that, a described LDO, the 3rd LDO are the LDO that band turn-offs control.
4. the power management of a kind of vehicle positioning tracing equipment according to claim 1 and anti-deadlock control device is characterized in that, described MCU is 8 single-chip microcomputers of NXP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200408366U CN201975818U (en) | 2011-02-17 | 2011-02-17 | Power management and deadlock protective control device for vehicle locating and tracking facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200408366U CN201975818U (en) | 2011-02-17 | 2011-02-17 | Power management and deadlock protective control device for vehicle locating and tracking facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201975818U true CN201975818U (en) | 2011-09-14 |
Family
ID=44580916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200408366U Expired - Fee Related CN201975818U (en) | 2011-02-17 | 2011-02-17 | Power management and deadlock protective control device for vehicle locating and tracking facility |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201975818U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102642472A (en) * | 2011-02-17 | 2012-08-22 | 上海航鼎电子科技发展有限公司 | Method and device for power management and deadlock protective control of vehicle-mounted positioning and tracking equipment |
| CN103293545A (en) * | 2012-02-27 | 2013-09-11 | 上海航鼎电子科技发展有限公司 | Embedded type positioning tracking device for vehicle-mounted navigation instrument |
| WO2017157113A1 (en) * | 2016-03-18 | 2017-09-21 | 电信科学技术研究院 | Dc-dc regulator and soft-start control method therefor, and controller |
| CN109814984A (en) * | 2019-02-01 | 2019-05-28 | 宁波市金泽机电科技有限公司 | A kind of anti-crash control circuit of embedded system |
| CN113377186A (en) * | 2021-08-13 | 2021-09-10 | 深圳市有为信息技术发展有限公司 | Power management circuit, control method thereof, vehicle-mounted equipment and motor vehicle |
-
2011
- 2011-02-17 CN CN2011200408366U patent/CN201975818U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102642472A (en) * | 2011-02-17 | 2012-08-22 | 上海航鼎电子科技发展有限公司 | Method and device for power management and deadlock protective control of vehicle-mounted positioning and tracking equipment |
| CN102642472B (en) * | 2011-02-17 | 2014-06-25 | 上海航鼎电子科技发展有限公司 | Method and device for power management and deadlock protective control of vehicle-mounted positioning and tracking equipment |
| CN103293545A (en) * | 2012-02-27 | 2013-09-11 | 上海航鼎电子科技发展有限公司 | Embedded type positioning tracking device for vehicle-mounted navigation instrument |
| WO2017157113A1 (en) * | 2016-03-18 | 2017-09-21 | 电信科学技术研究院 | Dc-dc regulator and soft-start control method therefor, and controller |
| CN107204705A (en) * | 2016-03-18 | 2017-09-26 | 电信科学技术研究院 | The control method of DC-DC adjusters and its soft start, controller |
| CN107204705B (en) * | 2016-03-18 | 2019-04-19 | 电信科学技术研究院 | The control method of DC-DC adjuster and its soft start, controller |
| CN109814984A (en) * | 2019-02-01 | 2019-05-28 | 宁波市金泽机电科技有限公司 | A kind of anti-crash control circuit of embedded system |
| CN113377186A (en) * | 2021-08-13 | 2021-09-10 | 深圳市有为信息技术发展有限公司 | Power management circuit, control method thereof, vehicle-mounted equipment and motor vehicle |
| CN113377186B (en) * | 2021-08-13 | 2021-11-19 | 深圳市有为信息技术发展有限公司 | Power management circuit, control method thereof, vehicle-mounted equipment and motor vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102642472B (en) | Method and device for power management and deadlock protective control of vehicle-mounted positioning and tracking equipment | |
| CN201975818U (en) | Power management and deadlock protective control device for vehicle locating and tracking facility | |
| US20200295408A1 (en) | Battery pack and data transmission method between the battery pack and electrical device | |
| US20230127497A1 (en) | Electrical device and program update method thereof | |
| CN102496991B (en) | Backup lithium ion battery pack management method and management system thereof | |
| CN107240948B (en) | Portable energy storage battery charge and discharge control method and system | |
| CN109888887B (en) | A method and system for battery power-on and power-off management of an intelligent charging cabinet | |
| CN103092315B (en) | The mobile terminal of rear recovery application program can be restarted | |
| CN106647710B (en) | A kind of low power-consumption intelligent vehicle-mounted diagnosis device that can be cut-off automatically and method | |
| CN103997079B (en) | A kind of electric vehicle alternating-current charging pile and using method thereof | |
| CN108123509B (en) | Charging control method and related device thereof | |
| CN110261794A (en) | A kind of CP signal deteching circuit and onboard charger with detection of negative pressure circuit | |
| CN106427585A (en) | Time delay method, time delay system, power-up delay and power-down delay method and system | |
| CN201928043U (en) | Movable power supply | |
| CN107800188B (en) | Backup power-off alarm power supply circuit and oxygen generator | |
| CN111042198A (en) | Low-power, simple and general-purpose cable manhole cover monitoring device | |
| CN102427261B (en) | Constant-current and constant-voltage circuit for standby power supply of vehicle-mounted DVR (discharge voltage regulator) equipment lead-acid storage battery | |
| CN111399405A (en) | Control method and device for vehicle-mounted electronic equipment, storage medium and electronic equipment | |
| CN118915530A (en) | Vehicle dormancy monitoring method and device, electronic equipment and storage medium | |
| CN113922461A (en) | Power management system and method for preventing vehicle feed | |
| CN203224778U (en) | High-safety-performance ECU architecture for electric car | |
| CN103699857B (en) | The anti-hacking device of electronic equipment and electronic equipment | |
| CN217360594U (en) | Startup and shutdown control device of industrial personal computer | |
| CN212256084U (en) | One-time power-off integrated manager | |
| CN211908423U (en) | Control circuit that on-vehicle wireless was filled |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20160217 |