CN215182986U - LED drive circuit applied to head-up display of agricultural machinery travelling crane - Google Patents
LED drive circuit applied to head-up display of agricultural machinery travelling crane Download PDFInfo
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- CN215182986U CN215182986U CN202121050075.2U CN202121050075U CN215182986U CN 215182986 U CN215182986 U CN 215182986U CN 202121050075 U CN202121050075 U CN 202121050075U CN 215182986 U CN215182986 U CN 215182986U
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Abstract
The utility model discloses a be applied to LED drive circuit of agricultural machine driving new line demonstration, include: the system comprises a vehicle information monitoring and processing device, an LED lamp bead driving integrated circuit, a head-up display, a brightness control circuit and an ambient brightness monitoring device; a plurality of LED lamp beads are arranged in the head-up display; the vehicle information monitoring and processing device is connected with the LED lamp beads through the LED lamp bead driving integrated circuit; the ambient brightness monitoring device is connected with the LED lamp beads through the brightness control circuit. The utility model discloses only need a small amount of circuits to cascade LED lamp pearl, can guarantee LED lamp pearl all control, save the use of components and parts, guarantee the accuracy to vehicle information display of new line display; meanwhile, the brightness control circuit is used, so that the information displayed by the head-up display can be automatically adjusted along with the change of the external environment.
Description
Technical Field
The utility model relates to an agricultural machine shows the field, especially relates to a be applied to LED drive circuit that agricultural machine driving new line shows.
Background
The head-up display utilizes an optical emission principle to project important vehicle information on glass in front of a sight line, so that a driver does not need to look down at an instrument panel to disperse attention, and driving safety is guaranteed. However, the head-up display comprises a large number of LED lamp beads, and because the number of LED lamp beads is large, in the LED lamp bead driving circuit, an independent circuit is separately built for each LED lamp bead, so that cascade control of a large number of LED lamp beads by a single circuit cannot be achieved, and meanwhile, the head-up display cannot automatically adjust the brightness according to external environmental factors.
SUMMERY OF THE UTILITY MODEL
For solving the LED lamp pearl control circuit who is applied to agricultural machine driving and shows that the new line uses the numerous problem of components and parts among the above-mentioned prior art, the utility model provides a be applied to the LED drive circuit that agricultural machine driving and showing that new line shows realizes the cascade control to the numerous LED lamp pearl of quantity in the agricultural machine driving and showing that new line shows, has reduced the use of components and parts, and the automatic adjustment of luminance can be accomplished according to the light intensity of external environment to the new line show simultaneously.
The utility model discloses specifically include:
the system comprises a vehicle information monitoring and processing device, an LED lamp bead driving integrated circuit, a head-up display, a brightness control circuit and an ambient brightness monitoring device;
a plurality of LED lamp beads are arranged in the head-up display;
the vehicle information monitoring and processing device is connected with the LED lamp beads through the LED lamp bead driving integrated circuit;
the ambient brightness monitoring device is connected with the LED lamp beads through the brightness control circuit.
Preferably, the vehicle information monitoring and processing device includes an oil amount information monitoring device and an oil amount information processing device;
the oil quantity information monitoring device is connected with the oil quantity information processing device.
Preferably, the oil quantity information monitoring device adopts a capacitive oil quantity sensor.
Preferably, the oil quantity information processing device adopts an STM32 series single chip microcomputer.
Preferably, the LED lamp bead driving integrated circuit is formed by connecting a single MBI5020 chip or a plurality of MBI5020 chips;
the single MBI5020 chip is connected with 16 paths of LED lamp beads at most.
Preferably, the LED lamp beads adopt surface-mounted LED lamp beads.
Preferably, the brightness control circuit employs a half field effect transistor.
Preferably, the ambient brightness monitoring device adopts a photoelectric sensor.
The utility model discloses there is following beneficial effect:
1) the utility model discloses a vehicle information monitoring processing apparatus gathers and handles vehicle information, give LED lamp pearl driver integrated circuit with handling result serial transmission, LED lamp pearl driver integrated circuit is with the switch of the whole LED lamp pearls of parallel transmission mode control again, can connect a plurality of LED lamp pearls through a LED lamp pearl driver integrated circuit, accomplish the cascade control to a large amount of LED lamp pearls, guarantee the accuracy to vehicle information display of new line display, accelerate the response time of new line display simultaneously.
2) The utility model discloses use ambient brightness monitoring devices to carry out the regulation of luminance through the LED lamp pearl of luminance control circuit in to the new line display, guarantee that the information that the new line display shows can carry out automatic adjustment along with external environment's change.
3) The utility model discloses an use single or a plurality of chip to increase a plurality of LED lamp pearl of control, when LED lamp pearl quantity increases in a large number, only need a small amount of chips to cascade and can guarantee the whole controls of LED lamp pearl, save the use of a large amount of components and parts.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic diagram of a system provided by an embodiment of the present invention;
fig. 2 is a schematic structural view of an LED lamp bead driving integrated circuit provided in an embodiment of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to solve the cascade control that has the impossible a large amount of LED lamp pearls of accomplishing among the prior art, the new line display also can't carry out the automatic adjustment scheduling problem according to outside environmental factor simultaneously, the utility model provides a following scheme:
as shown in fig. 1, the utility model provides a LED drive circuit of agricultural machinery driving new line demonstration, include:
the system comprises a vehicle information monitoring and processing device, an LED lamp bead driving integrated circuit, a head-up display, a brightness control circuit and an ambient brightness monitoring device;
the head-up display comprises a plurality of LED lamp beads;
the vehicle information monitoring and processing device is connected with the LED lamp beads through the LED lamp bead driving integrated circuit;
the ambient brightness monitoring device is connected with the LED lamp beads through the brightness control circuit.
The vehicle information monitoring and processing device collects vehicle information including oil quantity of an oil tank, electric quantity of a vehicle battery and the like. For convenience of description, the vehicle information monitoring and processing device in the present embodiment takes the example of collecting the fuel tank information for description.
The vehicle monitoring processing circuit comprises a fuel quantity information monitoring device and a fuel quantity information processing device;
the oil quantity information monitoring device is connected with the oil quantity information processing device;
the oil quantity information monitoring device adopts a capacitive oil quantity sensor and is used for monitoring the oil quantity of an oil tank in the agricultural machinery travelling crane, generating an electric signal and transmitting the electric signal to the oil quantity processing device;
the oil quantity information processing device uses an MCU (micro control unit) which uses an STM32 chip and comprises a relevant algorithm related to oil quantity information, and is used for collecting an electric signal transmitted by the oil quantity sensor, processing the collected electric signal by the relevant algorithm related to the oil quantity information, generating an oil quantity signal and transmitting the oil quantity signal to the LED lamp bead driving integrated circuit;
the LED lamp bead driving integrated circuit adopts one or more MBI5020 chips, the chips comprise a displacement buffer, a latch, a driver, a plurality of input interfaces and a plurality of output interfaces,
the displacement buffer, the latch and the driver are connected in sequence,
the displacement buffer is a 16-bit displacement buffer and is connected with the vehicle information monitoring and processing circuit through the SDI input interface 2, the displacement buffer is used for receiving an electric quantity signal transmitted by the vehicle information monitoring and processing circuit in series, and according to the electric quantity signal, the buffer data in the displacement buffer is adjusted to ensure that the buffer data information in the displacement buffer corresponds to the oil quantity information at the moment and the buffer information is transmitted to the latch in a parallel mode,
the latch is a 16-bit output latch, receives the cache information in a parallel transmission mode, stores the cache information, and simultaneously transmits the stored information in parallel.
The driver adopts a 16-bit output driver, and the driver controls output current to control LED lamp beads in the head-up display through a plurality of control output interfaces (5-20) according to information transmitted by the latch through receiving information transmitted by the latch.
16 way LED lamp pearls of a MBI5020 chip control at most, for convenient operation, only control 10 way LED lamp pearls in this embodiment, when adopting a MBI5020 chip, SDO output interface 22 does not connect, when adopting a plurality of MBI5020 chips, cascade through SDO output interface 22 and SDI input interface 2 between the MBI5020 chip, increase control output interface, guarantee the total control to the numerous LED lamp pearl of log quantity.
The environment brightness monitoring device adopts a photoelectric sensor; the environment brightness monitoring device is used for collecting brightness change in an external environment, converting the brightness change into an electric signal and transmitting the electric signal to the brightness control circuit.
A brightness control circuit is arranged between the ambient brightness monitoring device and the head-up display, an AO3401A enhanced P-type metal oxide semiconductor field effect transistor (PMOS tube) and a PWM circuit are arranged in the brightness control circuit, wherein the PMOS tube comprises a grid electrode, a source electrode and a drain electrode, the grid electrode is connected with a brightness detection device, the source electrode is connected with a 3.3V power supply, and the drain electrode is connected with all LED lamp beads. According to the electric signal that luminance change conversion was converted, control grid voltage, and then realize the switch-on of source electrode to drain electrode, continue control grid voltage, the impedance of source electrode to drain electrode changes, and the current size in the LED lamp pearl is controlled to the automatic adjustment control PMOS pipe's of PWM circuit through the conduction voltage to realize that LED lamp pearl is along with external environment automatic adjustment luminance size.
The head-up display is provided with a plurality of LED lamp beads and displays vehicle information through the LED lamp beads.
The utility model discloses an implementation process:
taking the collected oil quantity information as an example, the vehicle information monitoring device collects the oil quantity information in an oil tank, generates an electric signal and transmits the electric signal to the vehicle processing device; the vehicle information processing device processes the electric signal to generate an oil quantity signal and transmits the oil quantity signal to the LED lamp bead driving integrated circuit;
as shown in fig. 2, taking a single MBI5020 chip as an example, a displacement buffer in an LED lamp bead driving integrated circuit receives an electric quantity signal transmitted by an oil quantity information monitoring processing circuit through an input interface 2, adjusts buffered data according to the electric quantity signal, and transmits the buffered information to a latch in a parallel manner. The latch receives the cache information, stores the cache information, and transmits the stored information in parallel, and the driver receives the information transmitted by the latch and controls output current through a plurality of output interfaces (11-20) according to the information transmitted by the latch to perform cascade control on 10 paths of LED lamp beads in the head-up display. Meanwhile, the LED lamp bead driving integrated circuit can use a plurality of MBI5020 chips,
meanwhile, the ambient brightness monitoring device collects brightness information in an external environment and transmits an electric signal converted from the brightness information to the brightness control circuit, and the brightness control circuit controls the current of all LED lamp beads in the head-up display through the PMOS tube so that the LED lamp beads are adjusted along with the external brightness.
The utility model discloses there is following beneficial effect:
1) the utility model discloses a vehicle information monitoring processing apparatus gathers and handles vehicle information, give LED lamp pearl driver integrated circuit with handling result serial transmission, LED lamp pearl driver integrated circuit is with the switch of the whole LED lamp pearls of parallel transmission mode control again, can connect a plurality of LED lamp pearls through a LED lamp pearl driver integrated circuit, accomplish the cascade control to a large amount of LED lamp pearls, guarantee the accuracy to vehicle information display of new line display, accelerate the response time of new line display simultaneously.
2) The utility model discloses use ambient brightness monitoring devices to carry out the regulation of luminance through the LED lamp pearl of luminance control circuit in to the new line display, guarantee that the information that the new line display shows can carry out automatic adjustment along with external environment's change.
3) The utility model discloses an use single or a plurality of chip to increase a plurality of LED lamp pearl of control, when LED lamp pearl quantity increases in a large number, only need a small amount of chips to cascade and can guarantee the whole controls of LED lamp pearl, save the use of a large amount of components and parts.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides an LED drive circuit who is applied to agricultural machine driving new line display which characterized in that includes:
the system comprises a vehicle information monitoring and processing device, an LED lamp bead driving integrated circuit, a head-up display, a brightness control circuit and an ambient brightness monitoring device;
a plurality of LED lamp beads are arranged in the head-up display;
the vehicle information monitoring and processing device is connected with the LED lamp beads through the LED lamp bead driving integrated circuit;
the ambient brightness monitoring device is connected with the LED lamp beads through the brightness control circuit.
2. The LED driving circuit applied to the head-up display of the agricultural machinery travelling crane according to claim 1, wherein:
the vehicle information monitoring and processing device comprises an oil quantity information monitoring device and an oil quantity information processing device;
the oil quantity information monitoring device is connected with the oil quantity information processing device.
3. The LED driving circuit applied to the head-up display of the agricultural machinery travelling crane according to claim 2, wherein:
the oil quantity information monitoring device adopts a capacitance type oil quantity sensor.
4. The LED driving circuit applied to the head-up display of the agricultural machinery travelling crane according to claim 2, wherein:
the oil mass information processing device adopts an STM32 series single chip microcomputer.
5. The LED driving circuit applied to the head-up display of the agricultural machinery travelling crane according to claim 1, wherein:
the LED lamp bead driving integrated circuit is formed by connecting a single MBI5020 chip or a plurality of MBI5020 chips;
the single MBI5020 chip is connected with 16 paths of LED lamp beads at most.
6. The LED driving circuit applied to the head-up display of the agricultural machinery travelling crane according to claim 1, wherein:
the LED lamp beads adopt surface-mounted LED lamp beads.
7. The LED driving circuit applied to the head-up display of the agricultural machinery travelling crane according to claim 1, wherein:
the brightness control circuit adopts a half-field effect transistor.
8. The LED driving circuit applied to the head-up display of the agricultural machinery travelling crane according to claim 1, wherein:
the ambient brightness monitoring device adopts a photoelectric sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121050075.2U CN215182986U (en) | 2021-05-17 | 2021-05-17 | LED drive circuit applied to head-up display of agricultural machinery travelling crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121050075.2U CN215182986U (en) | 2021-05-17 | 2021-05-17 | LED drive circuit applied to head-up display of agricultural machinery travelling crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215182986U true CN215182986U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121050075.2U Active CN215182986U (en) | 2021-05-17 | 2021-05-17 | LED drive circuit applied to head-up display of agricultural machinery travelling crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215182986U (en) |
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2021
- 2021-05-17 CN CN202121050075.2U patent/CN215182986U/en active Active
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