CN211395805U - Loader instrument based on 9S12HY - Google Patents

Abstract

The utility model discloses a loader instrument based on 9S12HY, LED lamp bank, LCD are the digital display module, be responsible for the digital display of pilot lamp system and oil mass, mileage of traveling, microprocessor is connected with buzzer through the I/O mouth, buzzer is used for the malfunction alerting, microprocessor is connected with LCD through the LCD controller, microprocessor is connected with LED lamp bank through the I/O mouth, microprocessor is connected with step motor through the step motor controller for the control shows speedometer, microprocessor is connected with switch signal input circuit through the I/O mouth, microprocessor passes through RS232 serial communication module connection control panel, speed detection system, oil mass detection system and CAN bus connection, microprocessor is connected with CAN transceiver through the CAN controller and realizes the communication with the CAN bus, the utility model discloses the circuit layout is simple in structure, the system is easy to assemble, low in failure rate and high in reliability.

Description

Loader instrument based on 9S12HY

Technical Field

The utility model relates to an instrument panel technical field, specific loader instrument based on 9S12HY that says so.

Background

The loader is a kind of earth and stone construction machinery widely used in highway, railway, building, water and electricity, port and mine, and is mainly used for shoveling and loading bulk materials such as soil, gravel, lime and coal, and also for light shoveling and digging of ore and hard soil. The instrument panel is a necessary structural part of the loader, various signal circuits related to the instrument panel and configured on the existing loader are disordered in layout, if the sensor is directly connected with the instrument, the connecting mode has many wiring harnesses and is difficult to assemble, wiring errors or circuit burnout are easily caused, the work of the whole loader is influenced, and the cost loss of manpower and material resources is brought to a user.

Therefore, in order to overcome the defects of the prior art, the loader instrument based on 9S12HY is designed, which has a simple circuit layout structure, an easy system assembly, a low failure rate and high reliability, and is the problem to be solved by the inventor.

SUMMERY OF THE UTILITY MODEL

To prior art' S not enough, the utility model aims at providing a loader instrument based on 9S12HY, its circuit layout simple structure, the system assembles easily, and the fault rate is low, and the reliability is high.

The utility model provides a technical scheme that its technical problem adopted is: a loader instrument based on 9S12HY comprises a microprocessor, a buzzer, an LED lamp set, a liquid crystal display, a stepping motor, a control panel, a switch signal input circuit, a vehicle speed detection system and a fuel quantity detection system, wherein the LED lamp set and the liquid crystal display are used as digital display modules to be responsible for digital display of an indicator lamp system, the fuel quantity of hydraulic oil and the driving mileage, the microprocessor is connected with the buzzer through an I/O port and used for fault alarm, the microprocessor is connected with the liquid crystal display through an LCD controller and connected with the LED lamp set through the I/O port, the LED lamp set comprises a vehicle lamp, a steering lamp and a panel lamp, the microprocessor is connected with the stepping motor through the stepping motor controller and used for controlling and displaying a speedometer, and is connected with the switch signal input circuit through the I/O port, microprocessor passes through RS232 serial communication module connection control panel, speed of a motor vehicle detecting system, oil mass detecting system and CAN bus connection, speed of a motor vehicle detecting system is including vehicle speed sensor, oil mass detecting system is including oil mass sensor, microprocessor passes through the CAN controller and is connected the communication that realizes with the CAN bus with the CAN transceiver.

Furthermore, the microprocessor adopts an MC9S12HY64 chip as a core control unit.

Further, the VID29 stepping motor is adopted as the pointer display module by the stepping motor.

Further, the liquid crystal display is an LCM046 liquid crystal display module.

Further, the CAN transceiver is a TJA1050 chip.

Further, the RS232 serial communication module is a MAX232A chip.

The utility model has the advantages that:

1. the utility model discloses a MC9S12HY64 is as the treater of panel board, and hardware structure is more succinct, and this panel board has realized functions such as chip control, digital display, step motor control to realize data communication through the CAN bus, circuit layout simple structure, the system assembles easily, and various control signal CAN be received and handled to this panel board, and the operation is stable, and the control accuracy is more accurate, and the reliability is high.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a circuit diagram of the liquid crystal display panel of the present invention.

Detailed Description

The invention will be further described with reference to specific examples, which are intended to be illustrative only and not to limit the scope of the invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents also fall within the scope of the appended claims.

Referring to fig. 1, the utility model is a schematic diagram of the whole structure of the utility model, the structure is a loader instrument based on 9S12HY, which comprises a microprocessor, a buzzer, an LED lamp bank, a liquid crystal display, a step motor, a control panel, a switch signal input circuit, a vehicle speed detection system, an oil quantity detection system, the LED lamp bank and the liquid crystal display are used as digital display modules, and are responsible for indicating a lamp system, the oil quantity of hydraulic oil and the digital display of the mileage, the microprocessor is connected with the buzzer through an I/O port, the buzzer is used for fault alarm, the microprocessor is connected with the liquid crystal display through the LCD controller, the microprocessor is connected with the LED lamp bank through an I/O port, the LED lamp bank comprises a vehicle lamp, a turn light and a panel light, the microprocessor is connected with the step motor through the step motor controller and is used for controlling and displaying the vehicle speed meter, the microprocessor is, the microprocessor is connected with the control panel through the RS232 serial communication module, the vehicle speed detection system and the oil quantity detection system are connected with the CAN bus, the vehicle speed detection system comprises a vehicle speed sensor, the oil quantity detection system comprises an oil quantity sensor, and the microprocessor is connected with the CAN transceiver through the CAN controller to realize communication with the CAN bus.

The instrument panel takes an MC9S12HY64 processor as a core control unit and consists of 4 modules of digital display, pointer display, fault alarm and data communication. A VID29 stepping motor is used as a pointer display module and is used as a speedometer; and the buzzer is used as a fault alarm module and is responsible for fault alarm and information reminding. There are 2 input modes for meter control data: a hardware switch I/O interrupt signal input and a control panel SCI serial communication input. The meter communication module realizes real-time communication with the vehicle speed detection system through the CAN bus to acquire oil mass and vehicle speed information.

Fig. 2 is the utility model discloses liquid crystal display control circuit diagram, LED adopt I/O control, and liquid crystal display adopts general type 4 position 8 sectional type liquid crystal display module LCM046, and wherein variable resistance is used for adjusting luminance, connects CS, WR and DA by the chip and can realize showing.

The digital display module adopts a double-input mode for signals, a main mode signal is triggered to be interrupted by a hardware switch, the control panel provides an analog auxiliary signal, functional analog control of panel lamps, steering lamps, vehicle lamps, liquid crystal resetting and the like can be realized, the control panel is communicated with an SCI interface provided by MC9S12HY64 through an RS232 serial communication protocol, an interrupt control MC9S12HY64 chip is adopted to provide an SCI module, serial port control and data receiving and transmitting can be conveniently realized, and the RS232 serial communication module adopts an MAX232A chip.

The pointer display module provides 2 parameters when the vehicle is running: vehicle speed and oil quantity. VID29-05p stepping motors are used for instrument panels, the instrument panels adopt a low power consumption mode 5V input voltage, the driving current requirement is less than 20mA, MC9S12HY64 is provided with a stepping motor controller, 16 large-current pins are contained to directly drive the stepping motors, the maximum 50mV current supply can be provided, and leads are directly connected with the stepping motors. The direct drive of the stepping motor enables hardware design to be simpler, circuit layout to be more convenient, and compared with the traditional stepping motor driving mode, the direct drive of the stepping motor is simpler and more efficient.

The instrument panel is used as a node of the CAN bus, performs data interaction with the vehicle speed sensor and the oil mass sensor, CAN expand required functions by adding nodes, the CAN node is composed of a CAN controller of the microprocessor and a CAN transceiver, the MC9S12HY64 chip integrates the MSCAN controller, and communication CAN be realized by directly connecting an MSCAN pin with the TJA1050 chip of the CAN transceiver.

Claims (6)

1. A loader meter based on 9S12HY, characterized by: the intelligent automobile speed meter comprises a microprocessor, a buzzer, an LED lamp set, a liquid crystal display, a stepping motor, a control panel, a switching signal input circuit, an automobile speed detection system and an oil quantity detection system, wherein the LED lamp set and the liquid crystal display are used as digital display modules to be responsible for indicating a lamp system and digitally displaying the oil quantity and the driving mileage of hydraulic oil, the microprocessor is connected with the buzzer through an I/O port and used for giving a fault alarm, the microprocessor is connected with the liquid crystal display through an LCD controller and connected with the LED lamp set through the I/O port, the LED lamp set comprises an automobile lamp, a steering lamp and a panel lamp, the microprocessor is connected with the stepping motor through a stepping motor controller and used for controlling and displaying the automobile speed meter, the microprocessor is connected with the switching signal input circuit through the I/O port and connected with the control panel through an RS232 serial communication module, speed of a motor vehicle detecting system, oil mass detecting system and CAN bus connection, speed of a motor vehicle detecting system is including speed of a motor vehicle sensor, oil mass detecting system is including oil mass sensor, microprocessor passes through the CAN controller and is connected the communication of realization and CAN bus with the CAN transceiver.

2. The loader meter of claim 1 based on 9S12HY, wherein: the microprocessor adopts an MC9S12HY64 chip as a core control unit.

3. The loader meter of claim 1 based on 9S12HY, wherein: the VID29 stepping motor is adopted as a pointer display module by the stepping motor.

4. The loader meter of claim 1 based on 9S12HY, wherein: the liquid crystal display is an LCM046 liquid crystal display module.

5. The loader meter of claim 1 based on 9S12HY, wherein: the CAN transceiver is a TJA1050 chip.

6. The loader meter of claim 1 based on 9S12HY, wherein: the RS232 serial communication module is a MAX232A chip.

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