CN105468116A - Vehicle-mounted terminal - Google Patents
Vehicle-mounted terminal Download PDFInfo
- Publication number
- CN105468116A CN105468116A CN201510919881.1A CN201510919881A CN105468116A CN 105468116 A CN105468116 A CN 105468116A CN 201510919881 A CN201510919881 A CN 201510919881A CN 105468116 A CN105468116 A CN 105468116A
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- core board
- car
- mounted terminal
- substrate
- temperature
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- 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
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
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- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention provides a vehicle-mounted terminal, which comprises a core board, a substrate and a cooling device, wherein the core board and the substrate are split, the core board is connected to the substrate through an I2C bus, and the temperature of the core board is detected through the I2C bus; the substrate is used for supplying the power to the core board when the temperature of the core board is smaller than a first preset value in order to make the core board be in a standby state; and the cooling device is used for cooling the core board when the temperature of the core board is greater than a second preset value. The vehicle-mounted terminal provided by the invention has higher practicability and lower cost.
Description
Technical field
Vehicle Technology field of the present invention, particularly relates to a kind of car-mounted terminal.
Background technology
Current, along with the fast development of society and increasing substantially of living standards of the people, the status of automotive electronic industry in whole national economy becomes more and more important.Meanwhile, due to the arrival of information age, people are while pursuit driver comfort and convenience, and more pay attention to real-time communication and the thing followed safety issue of information, car-mounted terminal arises at the historic moment under this background.
Car-mounted terminal fills after being mainly used in automobile in early days, not very high to temperature requirement, and flourish along with automobile industry, car-mounted terminal is used for auto-loading by increasing automobile vendor, also more and more higher to the requirement of car-mounted terminal, current the recognized standard is car rule levels, operating temperature range is-40 DEG C ~ 125 DEG C, in order to meet this requirement, the cost also corresponding increase of car-mounted terminal, existing market gets on the bus rule level car-mounted terminal price between 2000 yuan ~ 3000 yuan, and this price is low and middle-end automobile cannot bear, therefore, low cost and can meet car rule level require car-mounted terminal become future car mounted terminal development trend.
Summary of the invention
In view of this, the invention provides a kind of car-mounted terminal, in order to solve car-mounted terminal cost of the prior art higher and cannot meet car rule level require problem, its technical scheme is as follows:
A kind of car-mounted terminal, comprising: core board, substrate and heat abstractor, and described core board and described substrate adopt separate form;
Described core board is connected with described substrate by I2C bus, is detected the temperature of described core board by described I2C bus;
Described substrate, for when the temperature of described core board is less than the first preset value, for described core board is powered, is in holding state to make described core board;
Described heat abstractor, for when the temperature of described core board is greater than the second preset value, for described core board dispels the heat.
Wherein, described core board comprises:
For the treatment of the primary processor of vehicle-mounted data;
For storing the storage chip of vehicle-mounted data;
For the power circuit of powering for described primary processor, described storage chip and described heat abstractor;
And, clock circuit;
Described substrate comprises:
For connecting the peripheral interface circuit of peripherals;
For the charge-discharge circuit for described core board discharge and recharge;
And, be the battery that described core board charges for utilizing described charge-discharge circuit.
Wherein, described primary processor is connected with the described charge-discharge circuit of described substrate by described I2C bus, as temperature sensor, detects the temperature of described core board.
Wherein, the working range of described core board is 0 DEG C ~ 70 DEG C, and the working range of described power circuit and clock circuit is-40 DEG C ~ 85 DEG C.
Wherein, described storage chip comprises: DDR2 and eMMC.
Wherein, described battery is the lithium battery of 3.7V ~ 4.2V.
Wherein, described heat abstractor is be fixedly installed on the fan on described core board.
Wherein, when described primary processor is connected as temperature sensor with the described charge-discharge circuit of described substrate by described I2C bus, working range is-10 DEG C ~ 65 DEG C, then described first preset value is-10 DEG C, and described second preset value is ~ 65 DEG C.
Wherein, described charge-discharge circuit is BQ24160 chip.
Wherein, described power circuit is DC-DC/LD0 power circuit.
Technique scheme has following beneficial effect:
The invention provides a kind of car-mounted terminal, core board and substrate adopt separate form, core board utilizes I2C bus to be connected with substrate to carry out temperature detection as temperature sensor to core board, when detecting that the temperature of core board is less than the first preset value, sending enable signal to substrate, making substrate be that core board is powered, be in holding state to make core board always, when detecting that the temperature of core board is greater than the second preset value, sending enable signal to heat abstractor, making heat abstractor be core board heat radiation.The car-mounted terminal practicality that the present invention provides is higher, and cost is lower, and can ensure to meet car rule level demand.
Accompanying drawing explanation
The structural representation of the car-mounted terminal that Fig. 1 provides for the embodiment of the present invention;
A kind of concrete structure schematic diagram of the car-mounted terminal that Fig. 2 provides for the embodiment of the present invention.
Embodiment
For the purpose of quoting and know, the explanation of the technical term hereinafter used, write a Chinese character in simplified form or abridge and be summarized as follows:
DDR2:DoubleDataRate2, double transfer rate 2
EMMC:EmbeddedMultiMediaCard, embedded multi-media card
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, show the car-mounted terminal structural representation that the embodiment of the present invention provides, this car-mounted terminal can comprise: core board 101, substrate 102 and heat abstractor 103.
Wherein, core board 101 and substrate 102 adopt separate form.
Core board 101 is connected with substrate 103 by I2C bus, is detected the temperature of core board 101 by I2C bus.Substrate 102, for when the temperature of core board 101 is less than the first preset value, for core board 101 is powered.Heat abstractor 1013, for when the temperature of core board 101 is greater than the second preset value, for core board 101 dispels the heat.Wherein, the first preset value is less than the second preset value.
In the car-mounted terminal that the embodiment of the present invention provides, core board and substrate adopt separate form, core board utilizes I2C bus to be connected with substrate to carry out temperature detection as temperature sensor to core board, when detecting that the temperature of core board is less than the first preset value, enable signal is sent to substrate, substrate is made to be that core board is powered, be in holding state to make core board always, when detecting that the temperature of core board is greater than the second preset value, send enable signal to heat abstractor, make heat abstractor be core board heat radiation.The car-mounted terminal practicality that the present invention provides is higher, and cost is lower, and can ensure to meet car rule level demand.
Refer to Fig. 2, show a kind of concrete structure schematic diagram of the car-mounted terminal that the embodiment of the present invention provides, Fig. 2 shows the concrete structure of core board 101 and substrate 102 in above-described embodiment.Wherein, core board 101 comprises primary processor 1011, storage chip 1012, power circuit 1013 and clock circuit 1014.Substrate 102 comprises peripheral interface circuit 1021, charge-discharge circuit 1022 and battery 1023.
Concrete, the primary processor 1011 of core board 101 is for the treatment of the primary processor of vehicle-mounted data, and storage chip 1012 is for storing the storage chip of vehicle-mounted data, and power circuit 1013 is for powering for primary processor 1011, storage chip 1012 and heat abstractor 103.
In a kind of possible implementation, storage chip 1012 can comprise DDR2 and eMMC.
In a kind of possible implementation, power circuit can be DC-DC/LD0 power circuit.
Concrete, the peripheral interface circuit 1021 of substrate 102 is for connecting peripherals, and charge-discharge circuit 1022 is for being core board 101 discharge and recharge, and battery 1023 charges for core board 101 for utilizing charge-discharge circuit 1022.
In a kind of possible implementation, charge-discharge circuit 1022 can adopt TI battery solution, and adopt model to be the chip of bq24160, this chip has higher integrated level.
In a kind of possible implementation, battery 1023 can be lithium battery, concrete, and the specification of lithium battery can be the 3.7V ~ 4.2V of 9*40*53mm, the poly-lithium battery of 2000mAh.
It should be noted that, in the present embodiment and above-described embodiment, car-mounted terminal adopts business level design proposal, concrete, primary processor 1011 and the storage chip 1012 of core board 101 are business level, its working range is 0 DEG C ~ 70 DEG C, and power circuit 1013 and clock circuit 1014 are technical grade, and its working range is-40 DEG C ~ 85 DEG C.In addition, the peripheral interface circuit 1021 on substrate 102, charge-discharge circuit 1022 can be technical grade.Be understandable that, business level primary processor and storage chip cheap, the integrated level of primary processor own is higher, therefore, on the one hand can effectively reduce car-mounted terminal cost, can meet again car rule level demand on the other hand.
In the present embodiment, the primary processor 1011 of core board 101 is connected with the charge-discharge circuit 1022 of substrate 102 by I2C bus, as temperature sensor, detects the temperature of core board 101.
In a kind of possible implementation, when primary processor 1011 is connected as temperature sensor with charge-discharge circuit 1022 by I2C bus, working range can be-10 DEG C ~ 65 DEG C, the first preset value then in above-described embodiment can be set to-10 DEG C, second preset value can be set to 65 DEG C, namely, when the temperature of core board 101 is less than-10 DEG C, battery 1022 on substrate 102 is powered for core board 101, core board 101 is kept to be in holding state, when can ensure automobile starting like this, car-mounted terminal can enter duty rapidly; When car-mounted terminal normally works, core board 101 is powered by the electric supply installation on automobile, also charges to battery 1023 simultaneously; When detecting that the temperature of core board 101 is greater than 65 DEG C, primary processor 1011 sends enable signal to the feed circuit of heat abstractor 1013, heat abstractor 1013 is started working, for core board 101 dispels the heat.
In the present embodiment, heat abstractor 1013 can be fan.Core board 101 can adopt stamp hole form, and on substrate 102, fan is fixed on core board 101 in welding.
It should be noted that; in the present embodiment; on car-mounted terminal core board 101, most important part is primary processor 1011 and storage chip 1012, in order to ensure that car-mounted terminal can normally work, only need carry out heat insulation protecting to the primary processor 1011 on core board 101 and storage chip 1012.Because car rule level requires that operating temperature range is-40 DEG C ~ 125 DEG C, working range is wider, and primary processor 1011 and storage chip 1012 are business level on core board 101, operational temperature scope is 0 DEG C ~ 70 DEG C, in order to guarantee under high/low temperature (be no matter the plateau, Siberia in severe cold, or at extremely hot African nefud) can start rapidly, heat insulation protecting need be carried out to core board 101, allow core board 101 be in holding state always, once automobile starting, car-mounted terminal also starts thereupon, without the need to waiting for, this kind of method can meet the requirement of car rule level car-mounted terminal, therefore, under low temperature, adopt charge-discharge circuit, lithium battery is utilized to power to core board 101, under high temperature, fan is started working, core board 101 is dispelled the heat.During specific implementation, only need to carry out temperature detection by I2C bus to core board 101, charge-discharge circuit enable signal is issued during low temperature, fan feed circuit enable signal is issued during high temperature, when automobile starting, car-mounted terminal normally works, and is powered to core board 101 by automobile storage battery, and charge-discharge circuit 1022 pairs of lithium batteries charge simultaneously.
In the car-mounted terminal that the embodiment of the present invention provides, core board and substrate adopt separate form, primary processor on core board utilizes I2C bus to be connected with the charge-discharge circuit on substrate to carry out temperature detection as temperature sensor to core board, when detecting that the temperature of core board is less than the first preset value, enable signal is sent to charge-discharge circuit, charge-discharge circuit is made to be that core board is powered by battery, be in holding state to make core board always, when detecting that the temperature of core board is greater than the second preset value, enable signal is sent to heat abstractor, heat abstractor is made to be core board heat radiation.The car-mounted terminal practicality that the embodiment of the present invention provides is higher, cost is lower and can meet car rule level demand.In addition, the car-mounted terminal that the embodiment of the present invention provides, simplicity of design on hardware, core board only has business level primary processor and storage chip and to the power circuit of two chip power supplies and clock circuit, can ensure that core board density is higher, size is as far as possible little; Core board can be fixed mode, and only need change substrate design for different car-mounted terminal demand, versatility is stronger.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of provided embodiment, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle provided in this article and features of novelty.
Claims (10)
1. a car-mounted terminal, is characterized in that, comprising: core board, substrate and heat abstractor, and described core board and described substrate adopt separate form;
Described core board is connected with described substrate by I2C bus, is detected the temperature of described core board by described I2C bus;
Described substrate, for when the temperature of described core board is less than the first preset value, for described core board is powered, is in holding state to make described core board;
Described heat abstractor, for when the temperature of described core board is greater than the second preset value, for described core board dispels the heat.
2. car-mounted terminal according to claim 1, is characterized in that, described core board comprises:
For the treatment of the primary processor of vehicle-mounted data;
For storing the storage chip of vehicle-mounted data;
For the power circuit of powering for described primary processor, described storage chip and described heat abstractor;
And, clock circuit;
Described substrate comprises:
For connecting the peripheral interface circuit of peripherals;
For the charge-discharge circuit for described core board discharge and recharge;
And, be the battery that described core board charges for utilizing described charge-discharge circuit.
3. car-mounted terminal according to claim 2, is characterized in that, described primary processor is connected with the described charge-discharge circuit of described substrate by described I2C bus, as temperature sensor, detects the temperature of described core board.
4. according to the car-mounted terminal in claim 1-3 described in any one, it is characterized in that, the working range of described core board is 0 DEG C ~ 70 DEG C, and the working range of described power circuit and clock circuit is-40 DEG C ~ 85 DEG C.
5. car-mounted terminal according to claim 4, is characterized in that, described storage chip comprises: DDR2 and eMMC.
6. car-mounted terminal according to claim 4, is characterized in that, described battery is the lithium battery of 3.7V ~ 4.2V.
7. car-mounted terminal according to claim 4, is characterized in that, described heat abstractor is be fixedly installed on the fan on described core board.
8. car-mounted terminal according to claim 4, it is characterized in that, when described primary processor is connected as temperature sensor with the described charge-discharge circuit of described substrate by described I2C bus, working range is-10 DEG C ~ 65 DEG C, then described first preset value is-10 DEG C, and described second preset value is ~ 65 DEG C.
9. car-mounted terminal according to claim 4, is characterized in that, described charge-discharge circuit is BQ24160 chip.
10. car-mounted terminal according to claim 4, is characterized in that, described power circuit is DC-DC/LD0 power circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510919881.1A CN105468116A (en) | 2015-12-11 | 2015-12-11 | Vehicle-mounted terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510919881.1A CN105468116A (en) | 2015-12-11 | 2015-12-11 | Vehicle-mounted terminal |
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| Publication Number | Publication Date |
|---|---|
| CN105468116A true CN105468116A (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510919881.1A Pending CN105468116A (en) | 2015-12-11 | 2015-12-11 | Vehicle-mounted terminal |
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| Country | Link |
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| CN (1) | CN105468116A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106406937A (en) * | 2016-08-30 | 2017-02-15 | 乐视控股（北京）有限公司 | Vehicle-mounted system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050168210A1 (en) * | 2004-01-29 | 2005-08-04 | Mitsubishi Denki Kabushiki Kaisha | Hall IC type current sensor of vehicle-mounted power converter |
| CN203218405U (en) * | 2013-01-10 | 2013-09-25 | 浙江吉利汽车研究院有限公司杭州分公司 | Thermal management system for power battery of electric automobile |
-
2015
- 2015-12-11 CN CN201510919881.1A patent/CN105468116A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050168210A1 (en) * | 2004-01-29 | 2005-08-04 | Mitsubishi Denki Kabushiki Kaisha | Hall IC type current sensor of vehicle-mounted power converter |
| CN203218405U (en) * | 2013-01-10 | 2013-09-25 | 浙江吉利汽车研究院有限公司杭州分公司 | Thermal management system for power battery of electric automobile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106406937A (en) * | 2016-08-30 | 2017-02-15 | 乐视控股（北京）有限公司 | Vehicle-mounted system |
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