CN101770207A - Automatic automobile clock correction system and correction method thereof - Google Patents
Automatic automobile clock correction system and correction method thereof Download PDFInfo
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- CN101770207A CN101770207A CN 200910214182 CN200910214182A CN101770207A CN 101770207 A CN101770207 A CN 101770207A CN 200910214182 CN200910214182 CN 200910214182 CN 200910214182 A CN200910214182 A CN 200910214182A CN 101770207 A CN101770207 A CN 101770207A
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- 238000012544 monitoring process Methods 0.000 description 1
- 230000001915 proofreading effect Effects 0.000 description 1
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Abstract
The invention aims to provide an automatic automobile clock correction system capable of automatically correcting an automatic clock and a correction method thereof. The automatic automobile clock correction system comprises a clock processing unit and a clock display unit, wherein the clock processing unit comprises a clock signal generating circuit and a clock signal processing circuit; and the clock display unit receives and displays a clock signal transmitted from the clock processing unit; and the key point is that the clock processing unit is connected with a GPS receiving unit through a CAN bus. The correction method comprises the following steps: after the automobile is electrified, the clock processing unit receives a satellite clock synchronous signal by using the GPS receiving unit and corrects the local clock according to the synchronous signal; and after the correction is finished, the clock processing unit shields the satellite clock synchronous signal of the GPS receiving unit, times and generates the clock signal by using the clock signal generating circuit and the clock signal processing circuit arranged in the clock processing unit and transmits the clock signal to the clock display unit for displaying.
Description
Technical field
The present invention relates to auto clock and show, particularly the accurate system of proofreading and correct of auto clock.
Background technology
The whether accurate collection that not only has influence on each cell data of automobile of time, and the driver handled routine work and test all has an important effect.Automobile generally all utilizes combination instrument to come the demonstration time at present, its degree of accuracy mainly relies on the frequency of crystal oscillator to realize with software compensation: the frequency of different crystal oscillators has nuance, this species diversity relies on software to compensate, but this software compensation is just demarcated under specified temp (often being room temperature), and the condition of car load is very harsh, the difference on a large scale (frequency of crystal oscillator under different temperatures can variant) that temperature is not only arranged, and the interference of the vibration of automobile and internal circuit etc. all can have influence on clock accurately whether.These factors cause that increasing deviation can appear in time showing in the use of automobile, influence car owner's normal use.
Summary of the invention
The objective of the invention is to propose a kind of automatic automobile clock correction system and bearing calibration thereof that can automatic time correction.
Automatic automobile clock correction system of the present invention comprises clock processing unit and clock display unit, described clock processing unit comprises clock signal generating circuit and clock signal treatment circuit, the clock signal that described clock display unit receives and the read clock processing unit is sent, key is that described clock processing unit is connected with the GPS receiving element by the CAN bus.
After the bearing calibration of above-mentioned automatic automobile clock correction system comprises the steps: that automobile powers on, the clock processing unit utilizes the GPS receiving element to receive the satellite clock synchronizing signal, and come local clock is proofreaied and correct according to this synchronizing signal, after correction finishes, the satellite clock synchronizing signal of clock processing unit shielding GPS receiving element, utilize the clock signal generating circuit and the clock signal processing circuit of establishing in it to come timing and clocking, and clock signal is sent to the clock display unit shows.
Gps system device on every satellite has very accurate atomic clock, and is often proofreaied and correct by the monitoring station.Gps satellite also sends the satellite clock synchronizing signal when sending navigation information, all utilize the satellite clock synchronizing signal to proofread and correct the clock of self after the each automobile of clock processing unit powers on, and therefore can guarantee the accuracy of clock.Above-mentioned GPS receiving element is generally GPS receiver and coupled GPS receiving antenna; Above-mentioned clock signal generating circuit is generally crystal oscillator and attached circuit such as matching capacitance thereof; Above-mentioned clock signal treatment circuit can utilize chip microcontroller, and its function is that clock signal is converted to digital signal, and compensate as required, reset etc.; Above-mentioned clock display unit can be equipment such as the combination instrument of automobile or DVD, and this is all prior art, repeats no more herein.By the CAN bus clock processing unit is connected not only with the GPS receiving element and can guarantees signal transmitting speed and accuracy, can also save automotive wire bundle, thereby save cost.
The bearing calibration of above-mentioned automatic automobile clock correction system can also be adopted following steps: after automobile powers on, the clock processing unit utilizes the GPS receiving element to receive the satellite clock synchronizing signal, and come local clock is proofreaied and correct according to this synchronizing signal, after correction finishes, the clock processing unit sends a control signal to the GPS receiving element, close the GPS receiving element, the clock processing unit utilizes the clock signal generating circuit and the clock signal processing circuit of establishing in it to come timing and clocking, and clock signal is sent to the clock display unit shows.The clock processing unit is just closed the GPS receiving element after position finishes, can save electric energy.Certainly the GPS receiving element can be unlocked under other orders, realizes navigation feature.
Use for convenient, the clock processing unit of above-mentioned automatic automobile clock correction system preferably also links to each other with car body controller by the CAN bus, and described car body controller is connected with the clock correction starting switch.So just can start clock correction as required, concrete steps are as follows: after automobile powers on, the clock processing unit utilizes the GPS receiving element to receive the satellite clock synchronizing signal, and come local clock is proofreaied and correct according to this synchronizing signal, after correction finishes, the satellite clock synchronizing signal of clock processing unit shielding GPS receiving element, utilize the clock signal generating circuit and the clock signal processing circuit of establishing in it to come timing and clocking, and clock signal is sent to the clock display unit shows; Receive the enabling signal of clock correction starting switch when car body controller after, send a control signal to the clock processing unit, the clock processing unit receives the satellite clock synchronizing signal of GPS receiving element, and come local clock is proofreaied and correct according to this synchronizing signal, after correction finishes, the satellite clock synchronizing signal of clock processing unit shielding GPS receiving element, utilize the clock signal generating circuit and the clock signal processing circuit of establishing in it to come timing and clocking, and clock signal is sent to the clock display unit shows.
The bearing calibration of above-mentioned automatic automobile clock correction system can also be adopted following steps, to save electric energy: after automobile powers on, the clock processing unit utilizes the GPS receiving element to receive the satellite clock synchronizing signal, and come local clock is proofreaied and correct according to this synchronizing signal, after correction finishes, the clock processing unit sends a control signal to the GPS receiving element, close the GPS receiving element, the clock processing unit utilizes the clock signal generating circuit and the clock signal processing circuit of establishing in it to come timing and clocking, and clock signal is sent to the clock display unit shows; Receive the enabling signal of clock correction starting switch when car body controller after, send a control signal to GPS receiving element and clock processing unit, start the GPS receiving element, the clock processing unit utilizes the GPS receiving element to receive the satellite clock synchronizing signal, and come local clock is proofreaied and correct according to this synchronizing signal, after correction finishes, the clock processing unit sends a control signal to the GPS receiving element, close the GPS receiving element, the clock processing unit utilizes the clock signal generating circuit and the clock signal processing circuit of establishing in it to come timing and clocking, and clock signal is sent to the clock display unit shows.
The enforcement difficulty of automatic automobile clock correction system of the present invention is little, its bearing calibration full automation, and step is simple, can guarantee the accuracy of auto clock, is convenient to promote.
Description of drawings
Fig. 1 is the schematic diagram of the automatic automobile clock correction system of embodiment 1;
Fig. 2 is the schematic diagram of the automatic automobile clock correction system of embodiment 2.
Embodiment
Describe the present invention in detail below in conjunction with specific embodiments and the drawings.
Embodiment 1:
As shown in Figure 1, the automatic automobile clock correction system of present embodiment comprises clock processing unit and clock display unit, described clock processing unit comprises clock signal generating circuit and clock signal treatment circuit, the clock signal that described clock display unit receives and the read clock processing unit is sent, described clock processing unit is connected with the GPS receiving element by the CAN bus.
After the bearing calibration of above-mentioned automatic automobile clock correction system comprises the steps: that automobile powers on, the clock processing unit utilizes the GPS receiving element to receive the satellite clock synchronizing signal, and come local clock is proofreaied and correct according to this synchronizing signal, after correction finishes, the satellite clock synchronizing signal of clock processing unit shielding GPS receiving element, utilize the clock signal generating circuit and the clock signal processing circuit of establishing in it to come timing and clocking, and clock signal is sent to the clock display unit shows.
Embodiment 2:
As shown in Figure 2, as different from Example 1, the clock processing unit of present embodiment also links to each other with car body controller by the CAN bus, and described car body controller is connected with the clock correction starting switch.
After the bearing calibration of above-mentioned automatic automobile clock correction system comprises the steps: that automobile powers on, the clock processing unit utilizes the GPS receiving element to receive the satellite clock synchronizing signal, and come local clock is proofreaied and correct according to this synchronizing signal, after correction finishes, the satellite clock synchronizing signal of clock processing unit shielding GPS receiving element, utilize the clock signal generating circuit and the clock signal processing circuit of establishing in it to come timing and clocking, and clock signal is sent to the clock display unit shows; Receive the enabling signal of clock correction starting switch when car body controller after, send a control signal to the clock processing unit, the clock processing unit receives the satellite clock synchronizing signal of GPS receiving element, and come local clock is proofreaied and correct according to this synchronizing signal, after correction finishes, the satellite clock synchronizing signal of clock processing unit shielding GPS receiving element, utilize the clock signal generating circuit and the clock signal processing circuit of establishing in it to come timing and clocking, and clock signal is sent to the clock display unit shows.
Claims (6)
1. automatic automobile clock correction system, comprise clock processing unit and clock display unit, described clock processing unit comprises clock signal generating circuit and clock signal treatment circuit, the clock signal that described clock display unit receives and the read clock processing unit is sent is characterized in that described clock processing unit is connected with the GPS receiving element by the CAN bus.
2. automatic automobile clock correction system according to claim 1 is characterized in that described clock processing unit also links to each other with car body controller by the CAN bus, and described car body controller is connected with the clock correction starting switch.
3. the bearing calibration of automatic automobile clock correction system according to claim 1, after it is characterized in that comprising the steps: that automobile powers on, the clock processing unit utilizes the GPS receiving element to receive the satellite clock synchronizing signal, and come local clock is proofreaied and correct according to this synchronizing signal, after correction finishes, the satellite clock synchronizing signal of clock processing unit shielding GPS receiving element, utilize the clock signal generating circuit and the clock signal processing circuit of establishing in it to come timing and clocking, and clock signal is sent to the clock display unit shows.
4. the bearing calibration of automatic automobile clock correction system according to claim 1, after it is characterized in that comprising the steps: that automobile powers on, the clock processing unit utilizes the GPS receiving element to receive the satellite clock synchronizing signal, and come local clock is proofreaied and correct according to this synchronizing signal, after correction finishes, the clock processing unit sends a control signal to the GPS receiving element, close the GPS receiving element, the clock processing unit utilizes the clock signal generating circuit and the clock signal processing circuit of establishing in it to come timing and clocking, and clock signal is sent to the clock display unit shows.
5. the bearing calibration of automatic automobile clock correction system according to claim 2, after it is characterized in that comprising the steps: that automobile powers on, the clock processing unit utilizes the GPS receiving element to receive the satellite clock synchronizing signal, and come local clock is proofreaied and correct according to this synchronizing signal, after correction finishes, the satellite clock synchronizing signal of clock processing unit shielding GPS receiving element, utilize the clock signal generating circuit and the clock signal processing circuit of establishing in it to come timing and clocking, and clock signal is sent to the clock display unit shows; Receive the enabling signal of clock correction starting switch when car body controller after, send a control signal to the clock processing unit, the clock processing unit receives the satellite clock synchronizing signal of GPS receiving element, and come local clock is proofreaied and correct according to this synchronizing signal, after correction finishes, the satellite clock synchronizing signal of clock processing unit shielding GPS receiving element, utilize the clock signal generating circuit and the clock signal processing circuit of establishing in it to come timing and clocking, and clock signal is sent to the clock display unit shows.
6. the bearing calibration of automatic automobile clock correction system according to claim 2, after it is characterized in that comprising the steps: that automobile powers on, the clock processing unit utilizes the GPS receiving element to receive the satellite clock synchronizing signal, and come local clock is proofreaied and correct according to this synchronizing signal, after correction finishes, the clock processing unit sends a control signal to the GPS receiving element, close the GPS receiving element, the clock processing unit utilizes the clock signal generating circuit and the clock signal processing circuit of establishing in it to come timing and clocking, and clock signal is sent to the clock display unit shows; Receive the enabling signal of clock correction starting switch when car body controller after, send a control signal to GPS receiving element and clock processing unit, start the GPS receiving element, the clock processing unit utilizes the GPS receiving element to receive the satellite clock synchronizing signal, and come local clock is proofreaied and correct according to this synchronizing signal, after correction finishes, the clock processing unit sends a control signal to the GPS receiving element, close the GPS receiving element, the clock processing unit utilizes the clock signal generating circuit and the clock signal processing circuit of establishing in it to come timing and clocking, and clock signal is sent to the clock display unit shows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910214182 CN101770207A (en) | 2009-12-25 | 2009-12-25 | Automatic automobile clock correction system and correction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910214182 CN101770207A (en) | 2009-12-25 | 2009-12-25 | Automatic automobile clock correction system and correction method thereof |
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| CN101770207A true CN101770207A (en) | 2010-07-07 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129217A (en) * | 2010-11-25 | 2011-07-20 | 埃泰克汽车电子(芜湖)有限公司 | Device for verifying accuracy of automobile instrument clock and verifying method thereof |
| CN102455656A (en) * | 2010-10-22 | 2012-05-16 | 比亚迪股份有限公司 | Automobile clock calibration system and calibration method |
| CN102923073A (en) * | 2012-10-31 | 2013-02-13 | 埃泰克汽车电子(芜湖)有限公司 | Clock calibration system for automobile instrument and calibration method of clock calibration system |
| CN103440712A (en) * | 2013-08-26 | 2013-12-11 | 南京市计量监督检测院 | Parking lot electronic toll collection timer calibrating device and method |
| CN104639598A (en) * | 2013-11-11 | 2015-05-20 | 现代摩比斯株式会社 | Synchronization apparatus and method between AVN system and digital clock of vehicle |
| CN106773617A (en) * | 2016-11-28 | 2017-05-31 | 北京汽车研究总院有限公司 | A kind of automobile |
-
2009
- 2009-12-25 CN CN 200910214182 patent/CN101770207A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102455656A (en) * | 2010-10-22 | 2012-05-16 | 比亚迪股份有限公司 | Automobile clock calibration system and calibration method |
| CN102455656B (en) * | 2010-10-22 | 2014-03-19 | 比亚迪股份有限公司 | Automobile clock calibration system and calibration method |
| CN102129217A (en) * | 2010-11-25 | 2011-07-20 | 埃泰克汽车电子(芜湖)有限公司 | Device for verifying accuracy of automobile instrument clock and verifying method thereof |
| CN102129217B (en) * | 2010-11-25 | 2013-02-06 | 埃泰克汽车电子(芜湖)有限公司 | Device for verifying accuracy of automobile instrument clock and verifying method thereof |
| CN102923073A (en) * | 2012-10-31 | 2013-02-13 | 埃泰克汽车电子(芜湖)有限公司 | Clock calibration system for automobile instrument and calibration method of clock calibration system |
| CN103440712A (en) * | 2013-08-26 | 2013-12-11 | 南京市计量监督检测院 | Parking lot electronic toll collection timer calibrating device and method |
| CN103440712B (en) * | 2013-08-26 | 2016-04-06 | 南京市计量监督检测院 | A kind of parking lot electronic toll collection timer calibrating installation and method |
| CN104639598A (en) * | 2013-11-11 | 2015-05-20 | 现代摩比斯株式会社 | Synchronization apparatus and method between AVN system and digital clock of vehicle |
| CN106773617A (en) * | 2016-11-28 | 2017-05-31 | 北京汽车研究总院有限公司 | A kind of automobile |
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Open date: 20100707 |