CN202255280U - Detection device and control system for vehicle-mounted display screen telescoping mechanism - Google Patents
Detection device and control system for vehicle-mounted display screen telescoping mechanism Download PDFInfo
- Publication number
- CN202255280U CN202255280U CN2011203263848U CN201120326384U CN202255280U CN 202255280 U CN202255280 U CN 202255280U CN 2011203263848 U CN2011203263848 U CN 2011203263848U CN 201120326384 U CN201120326384 U CN 201120326384U CN 202255280 U CN202255280 U CN 202255280U
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- display module
- vehicle
- display screen
- telescoping mechanism
- control system
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Abstract
The utility model discloses a detection device and a control system for a vehicle-mounted display screen telescoping mechanism. The detection device comprises a rotation sensor, a first reducing gear and a second reducing gear, wherein the first reducing gear is arranged on a power long shaft; the second reducing gear is meshed with the first reducing gear; and the rotation sensor is driven by a gear shaft of the second reducing gear to output a detection signal which represents angular displacement/speed of the rotation sensor, so that the current position of a display module is obtained according to the conversion. The control system comprises the detection device, an electric control unit and a driving mechanism, wherein the electric control unit receives the angular displacement/speed detection signal output by the detection device and calculates the current position of the display module so as to adjust the driving voltage of the driving mechanism; the driving mechanism is in transmission connection with the display module; and the display is driven to perform reciprocating motion according to the polarity and the amplitude of the driving voltage. Through the adoption of the detection device and the control system, the operating position of the display module is detected in real time, so that the motion state of the vehicle-mounted display screen telescoping mechanism is adjusted adaptively and the impact load of the display module is reduced.
Description
Technical field
The utility model relates to vehicle-mounted field of display devices, particularly a kind of pick-up unit of vehicle-carrying display screen telescoping mechanism and control system.
Background technology
Normal GP configuring S navigating instrument on the middle and high shelves automobile, look plurality of devices such as screen player, its display screen often adopts telescoping mechanism, can be display screen is flexible to the relevant position according to equipment work/idle condition, and this helps saving interior space.Referring to Fig. 1; Basic structure for vehicle-carrying display screen telescoping mechanism on the market; Principle of work is: the transmission gear 4 that motor driving module 6 drives on the power major axis 5, transmission gear 4 drive tooth bar 3, display module support 2 and display module 1 again and make stretching motion up and down.Be the stroke of control telescoping mechanism, need relative set testing agency, following brief description.
Referring to Fig. 2, this testing agency comprises two travel switches, is respectively following location switch 7 and last location switch 8.After the tooth bar on the tooth bar 3 puts contact 31 and last location switch 8 touchings in place, the telescoping mechanism stop motion that makes progress.Equally, the contact that puts in place is also arranged at the other end of tooth bar 3, after this contact and 8 touchings of last location switch, the downward stop motion of telescoping mechanism.The state of upper and lower two positions that put in place can only detect in this testing agency; Can not monitor the particular location of telescoping mechanism in motion process and the speed of operation; But under the state of putting in place, cut off power suddenly, can impact, if things go on like this then cause display module to damage because of inertia effect produces.
The utility model content
In view of this, the purpose of the utility model is to provide a kind of pick-up unit of vehicle-carrying display screen telescoping mechanism, can detect the telescoping mechanism run location in real time, thus the motion state of self-adaptation adjustment vehicle-carrying display screen telescoping mechanism easily.On this basis, another purpose of the utility model provides a kind of control system of vehicle-carrying display screen telescoping mechanism, reduces the shock load of display module thus.
For solving above technical matters, the technical scheme that the utility model provides is: a kind of pick-up unit of vehicle-carrying display screen telescoping mechanism comprises the rotation sensor and first reduction gearing and second reduction gearing; Said first reduction gearing is installed on the power major axis of vehicle-carrying display screen telescoping mechanism; Said second reduction gearing and said first reduction gearing directly mesh or mesh through some neutral gears; Said rotation sensor is driven by the gear shaft of said second reduction gearing, is used to export the detection signal that characterizes rotation sensor angular displacement/speed, and detection signal converts and can obtain the display module current location of vehicle-carrying display screen telescoping mechanism in view of the above.
More excellent ground, said rotation sensor is installed on the printed circuit board (PCB).
More excellent ground, said rotation sensor is an optical encoder sensor.
More excellent ground comprises location switch and following location switch, is used to detect the limit travel of said display module.
More excellent ground, the display module support of said display module is provided with upper bracket bending and lower carriage bending, be used separately as said display module support on put in place the contact and under the contact that puts in place.
On this basis, the utility model also provides a kind of control system of vehicle-carrying display screen telescoping mechanism, it is characterized in that, comprises above-mentioned detection device, ECU and driving mechanism, wherein:
Said ECU receives the angular displacement/speed detection signal of said pick-up unit output, and calculation display module current location is adjusted the driving voltage of said driving mechanism in view of the above;
The said driving mechanism display module that is in transmission connection drives said display module to-and-fro movement according to said driving voltage polarity and amplitude.
More excellent ground, said ECU judges whether the display module current location arrives the target deceleration position, if reduce the amplitude of said driving voltage by predetermined policy, so that display module is by corresponding acceleration deceleration.
More excellent ground, said target deceleration position is 90% position of said limit travel.
More excellent ground, said ECU judges whether the display module current location reaches the limit of travel position, if, cut off said driving voltage, make the corresponding braking of said display module.
More excellent ground, said driving mechanism is a motor driving module.
Compared with prior art; The utility model is used rotation sensor and is detected the angular displacement/rate signal in the driving-chain, and increases reduction gearing with adaption system, can detect the current location that telescoping mechanism runs in real time thus; Self-adapted adjustment system running status easily; Prevent that display module from suffering excessive shock load, this helps to reduce noise, prolongs service life of equipment.
Description of drawings
Fig. 1 is the synoptic diagram of vehicle-carrying display screen telescoping mechanism;
Fig. 2 is the enlarged drawing of A part among Fig. 1;
Fig. 3 is the pick-up unit synoptic diagram of the utility model vehicle-carrying display screen telescoping mechanism;
Fig. 4 is the control system block diagram of the utility model vehicle-carrying display screen telescoping mechanism;
Fig. 5 is the control procedure figure of the control system of the utility model vehicle-carrying display screen telescoping mechanism.
Embodiment
The core of the utility model is, detects the display module current location in real time, and the motion state of self-adaptation adjustment display module prevents that display module from suffering big shock load in view of the above.
In order to make those skilled in the art understand the technical scheme of the utility model better, the utility model is done further to specify below in conjunction with accompanying drawing and specific embodiment.
Referring to Fig. 3, a preferred embodiment of the pick-up unit (hereinafter to be referred as pick-up unit) of expression the utility model vehicle-carrying display screen telescoping mechanism.This pick-up unit has increased rotation sensor 11, first reduction gearing 9 and second reduction gearing 10 on vehicle-carrying display screen telescoping mechanism architecture basics, wherein: first reduction gearing 9 is installed on the power major axis 5 of vehicle-carrying display screen telescoping mechanism; Second reduction gearing 10 and first reduction gearing 9 directly mesh or mesh through some neutral gears; Rotation sensor 11 is installed on the printed circuit board (PCB) (PCB); Gear shaft 101 by second reduction gearing 10 drives; Be used to export the detection signal that characterizes rotation sensor angular displacement/speed, detection signal converts and can obtain the display module current location of vehicle-carrying display screen telescoping mechanism in view of the above.
This pick-up unit has kept and has comprised location switch 7 and following location switch 8, is used to detect the limit travel of display module 1.More excellent ground, present embodiment has been cancelled the contact on the tooth bar 3, and on display module support 2, has increased upper and lower support bending 21, with respectively as put in place on the display module support 2 contact with under the contact that puts in place.
Vehicle-carrying display screen telescoping mechanism structure, principle of work and mode of motion in the present embodiment are identical with former mechanism.Pick-up unit principle wherein is: pass to motion on second reduction gearing 10 and the rotation sensor 11 through first reduction gearing 9 on the power major axis 5; Detection signal on the rotation sensor 11 converts the location/velocity signal of display module 1 to through MCU (ECU).
In this embodiment; Rotation sensor 11 can be optical encoder sensor; Its output characterizes the detection signal of rotation sensor angular displacement/speed, obtains the gear linear velocity according to gear ratio, the big I of external diameter, obtains the location/velocity of the terminal display module of driving-chain (comprising power major axis 5, transmission gear 4, tooth bar 3, display module support 2 etc.) at last; Specific algorithm is a common practise, repeats no more.
In view of the above, MCU can detect the position signalling of display module in real time, to make judgement; When for example detecting display module and upwards moving 90% stroke; The power system driving voltage is exported in the MCU reduction, and telescoping mechanism just can be realized retarded motion, avoids putting in place and is impacted.
On this pick-up unit basis, detection signal is input among the ECU, constitute an adaptive automatic control system, below further specify.
Referring to Fig. 4, the control system (hereinafter to be referred as control system) that the utility model vehicle-carrying display screen telescoping mechanism is shown is formed.This control system comprises pick-up unit, ECU (MCU) and driving mechanism, wherein:
Angular displacement/the speed detection signal of ECU receiving detection device output, calculation display module current location is adjusted the driving voltage of driving mechanism in view of the above;
Driving mechanism is preferably motor driving module (generally comprising micromachine), through the driving-chain display module that is in transmission connection, drives the display module to-and-fro movement according to driving voltage polarity and amplitude.
After this control system started, ECU judged whether the display module current location arrives the target deceleration position, if press the amplitude that predetermined policy reduces driving voltage, so that display module slows down by corresponding acceleration.Simultaneously, ECU judges whether the display module current location reaches the limit of travel position, if, cut off driving voltage, make the corresponding braking of display module.
Below be executive agent with ECU, the control procedure of the control system of the utility model vehicle-carrying display screen telescoping mechanism is further described.
Referring to Fig. 5, the control procedure figure of the control system of expression the utility model vehicle-carrying display screen telescoping mechanism may further comprise the steps:
S501, system start-up.
Comprise that ECU powers on, self check, initialization and establish a communications link etc. with the rotation sensor ECU of pick-up unit.
Angular displacement/the speed detection signal of S502, receiving detection device output.
Usually, this detection signal is a small-signal, after amplification, digital-to-analog conversion, is transferred to the ECU seat and further handles.
S503, calculation display module current location.
The end of display module position driving-chain can obtain parameters such as display module current location and movement velocity according to known conversion relation.
S504, judge whether the display module current location arrives the target deceleration position,
If get into step S505;
If not, return step S502.
For example, can with the target deceleration position position, 90% left and right sides of limit travel.The zone in case target approach is slowed down, display module can run slowly.
S505, the amplitude of pressing predetermined policy reduction driving voltage are so that display module slows down by corresponding acceleration.
The size of driving voltage is directly proportional with the rotating speed of actuating unit, thereby display module is slowed down.Certainly, duty drive voltage amplitude recently of equal value that can PWM (pulse-length modulation) signal repeats no more at this.
S506, judge whether the display module current location reaches the limit of travel position,
If get into step S507;
If not, return step S502.
Because pick-up unit detects the display module current location in real time, is being provided with under the MCU situation, in fact need not travel switch and can judge the limit travel position, this helps simplified structure.
S507, cut-out driving voltage make the corresponding braking of display module.
Decelerate to than low velocity owing to display module this moment, thereby can reduce the shock load that display module receives greatly.
Only be the preferred implementation of the utility model below, should be pointed out that above-mentioned preferred implementation should not be regarded as the restriction to the utility model, the protection domain of the utility model should be as the criterion with claim institute restricted portion.For those skilled in the art, in spirit that does not break away from the utility model and scope, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (10)
1. the pick-up unit of a vehicle-carrying display screen telescoping mechanism is characterized in that, comprises the rotation sensor and first reduction gearing and second reduction gearing; Said first reduction gearing is installed on the power major axis of vehicle-carrying display screen telescoping mechanism; Said second reduction gearing and said first reduction gearing directly mesh or mesh through some neutral gears; Said rotation sensor is driven by the gear shaft of said second reduction gearing, is used to export the detection signal that characterizes rotation sensor angular displacement/speed, and detection signal converts and can obtain the display module current location of vehicle-carrying display screen telescoping mechanism in view of the above.
2. the pick-up unit of vehicle-carrying display screen telescoping mechanism as claimed in claim 1 is characterized in that, said rotation sensor is installed on the printed circuit board (PCB).
3. the pick-up unit of vehicle-carrying display screen telescoping mechanism as claimed in claim 1 is characterized in that, said rotation sensor is an optical encoder sensor.
4. like the pick-up unit of claim 1,2 or 3 described vehicle-carrying display screen telescoping mechanisms, it is characterized in that, comprise location switch and following location switch, be used to detect the limit travel of said display module.
5. the pick-up unit of vehicle-carrying display screen telescoping mechanism as claimed in claim 4; It is characterized in that; The display module support of said display module is provided with upper bracket bending and lower carriage bending, be used separately as said display module support on put in place the contact with under the contact that puts in place.
6. the control system of a vehicle-carrying display screen telescoping mechanism is characterized in that, comprises like each described pick-up unit of claim 1～5, ECU and driving mechanism, wherein:
Said ECU receives the angular displacement/speed detection signal of said pick-up unit output, and calculation display module current location is adjusted the driving voltage of said driving mechanism in view of the above;
The said driving mechanism display module that is in transmission connection drives said display module to-and-fro movement according to said driving voltage polarity and amplitude.
7. the control system of vehicle-carrying display screen telescoping mechanism as claimed in claim 6; This is characterized in that; Said ECU judges whether the display module current location arrives the target deceleration position; If reduce the amplitude of said driving voltage by predetermined policy, so that display module slows down by corresponding acceleration.
8. the control system of vehicle-carrying display screen telescoping mechanism as claimed in claim 7, this is characterized in that said target deceleration position is 90% position of said limit travel.
9. the control system of vehicle-carrying display screen telescoping mechanism as claimed in claim 6 is characterized in that, said ECU judges whether the display module current location reaches the limit of travel position, if, cut off said driving voltage, make the corresponding braking of said display module.
10. like the control system of each described vehicle-carrying display screen telescoping mechanism of claim 6～9, it is characterized in that said driving mechanism is a motor driving module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203263848U CN202255280U (en) | 2011-09-01 | 2011-09-01 | Detection device and control system for vehicle-mounted display screen telescoping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203263848U CN202255280U (en) | 2011-09-01 | 2011-09-01 | Detection device and control system for vehicle-mounted display screen telescoping mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN202255280U true CN202255280U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011203263848U Expired - Fee Related CN202255280U (en) | 2011-09-01 | 2011-09-01 | Detection device and control system for vehicle-mounted display screen telescoping mechanism |
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| CN (1) | CN202255280U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154558A (en) * | 2016-08-31 | 2016-11-23 | 上海伟世通汽车电子系统有限公司 | The reflective viewing screen draw off gear of HUD |
| CN108149726A (en) * | 2018-01-20 | 2018-06-12 | 罗厚镇 | A kind of loading machine with function of measuring |
-
2011
- 2011-09-01 CN CN2011203263848U patent/CN202255280U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154558A (en) * | 2016-08-31 | 2016-11-23 | 上海伟世通汽车电子系统有限公司 | The reflective viewing screen draw off gear of HUD |
| CN108149726A (en) * | 2018-01-20 | 2018-06-12 | 罗厚镇 | A kind of loading machine with function of measuring |
| CN108149726B (en) * | 2018-01-20 | 2020-11-24 | 义乌市富顺箱包有限公司 | Loader with metering function |
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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 |
Granted publication date: 20120530 Termination date: 20160901 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |