CAN bus voice alarm module detection device for mine dump truck

Abstract

The utility model discloses a CAN bus voice alarm module detection device for a mine dumper, and the device comprises a power processing module which is used for converting the rated voltage of direct current into 5V voltage; the power supply processing module is used for supplying power to the core processor module, and the core processor module is used for sending out an engine coolant temperature CAN signal, an engine oil pressure CAN signal, an instrument speed CAN signal, an engine rotating speed CAN signal, an air pressure front brake CAN signal and an air pressure rear brake CAN signal; the CAN transceiver module is used for connecting the core processor module and the voice alarm module; and the power supply module is used for supplying power to the voice alarm module. When testing is needed, only the voice alarm module box needs to be connected with the CAN receiving and transmitting module, the testing problem of the voice alarm module is solved, the working efficiency is improved, the product reliability is improved, and mass production is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of testing tooling technology, specifically relating to a testing device for a CAN bus voice alarm module used in mining dump trucks. Background Technology

[0002] Mining dump trucks are engineering vehicles used for automatically loading and unloading various minerals in mines. They operate under high intensity and harsh environments, while simultaneously meeting various road traffic and safety regulations. Currently, CAN bus voice alarm modules for mining dump trucks are used to announce key vehicle indicators via voice to prevent losses or dangers caused by drivers' inattention to the dump truck's condition. However, after production, there are no suitable dedicated tools for testing these CAN bus voice alarm modules, making testing cumbersome and hindering their production and widespread adoption. Utility Model Content

[0003] The purpose of this invention is to provide a testing device for a CAN bus voice alarm module for mining dump trucks, which solves the testing problem of the voice alarm module.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a detection device for a CAN bus voice alarm module for mining dump trucks, comprising:

[0005] The power processing module is used to convert the rated voltage of DC power into 5V.

[0006] The core processor module and the power processing module are used to supply power to the core processor module. The core processor module is used to send CAN signals for engine coolant temperature, oil pressure, instrument speed, engine speed, air pressure front brake, and air pressure rear brake.

[0007] The CAN transceiver module is used to connect the core processor module and the voice alarm module.

[0008] The power supply module is used to supply power to the voice alarm module.

[0009] Furthermore, it also includes a button processing module, which is used to switch the CAN signal emitted by the processor module.

[0010] Furthermore, the rated voltage of the direct current is 28 volts.

[0011] Furthermore, the memory module is used to remember the transmitted CAN signal values.

[0012] Furthermore, the chip in the CAN transceiver module is model TJA1050.

[0013] Furthermore, the core processor module is model GD32A503RDT3.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) The testing fixture can provide the corresponding working power and simulate various compliant alarm signals of the vehicle when testing the CAN bus voice alarm module product for dump trucks: engine coolant temperature CAN signal, oil pressure CAN signal, instrument speed CAN signal, engine speed CAN signal, air pressure front brake CAN signal and air pressure rear brake CAN signal. The above signals can effectively test whether the CAN bus voice alarm module product for mining dump trucks is qualified and can guarantee the normal operation of the vehicle. When testing is required, it is only necessary to connect the voice alarm module box to the CAN transceiver module, which solves the testing problem of the voice alarm module, improves work efficiency, and facilitates mass production.

[0016] (2) The button processing module is used to switch the CAN signal emitted by the heart processor module, so as to detect whether the voice alarm module product is qualified or not. Attached Figure Description

[0017] Figure 1 This is a structural block diagram of the detection device for the CAN bus voice alarm module of the mining dump truck of this utility model;

[0018] Figure 2 This is the circuit diagram of the power supply module;

[0019] Figure 3 The circuit diagram for the core processor module;

[0020] Figure 4 This is the circuit diagram for the memory module;

[0021] Figure 5 This is the circuit diagram for the CAN transceiver module;

[0022] Figure 6 This is the circuit diagram for the button processing module. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-6This utility model provides a technical solution for a CAN bus voice alarm module detection device for mining dump trucks.

[0025] A detection device for a CAN bus voice alarm module used in mining dump trucks includes:

[0026] The power processing module is used to convert the rated voltage of DC power into 5V.

[0027] The core processor module and the power processing module are used to supply power to the core processor module. The core processor module is used to send CAN signals for engine coolant temperature, oil pressure, instrument speed, engine speed, air pressure front brake, and air pressure rear brake.

[0028] The CAN transceiver module is used to connect the core processor module and the voice alarm module.

[0029] The power supply module is used to supply power to the voice alarm module.

[0030] By adopting the above scheme, the testing device can provide the corresponding operating power and simulate various compliant alarm signals from the vehicle during the testing of the CAN bus voice alarm module for dump trucks: engine coolant temperature CAN signal, oil pressure CAN signal, instrument speed CAN signal, engine speed CAN signal, front air pressure brake CAN signal, and rear air pressure brake CAN signal. These signals can effectively test the qualification of the CAN bus voice alarm module for mining dump trucks and ensure the normal operation of the vehicle. When testing is required, simply connect the voice alarm module to the CAN transceiver module. After testing, disconnect the voice alarm module from the CAN transceiver module, and then test other voice alarm modules.

[0031] The testing fixture also includes a button processing module, which is used to switch the CAN signal emitted by the processor module, thereby detecting whether the voice alarm module product is qualified. Figure 6 As shown, in the button processing module, D4 ​​prevents reverse polarity, and the step-down circuit of R37 and R38 converts the external 24V voltage to 5V to match the microcontroller voltage. C37 and C36 are filter voltages. The CAN bus voice alarm module detects that the button is connected in the positive direction when pressed, and controls the conversion of the CAN signal voice through this module.

[0032] The rated voltage of the DC power supply is 28 volts. The power processing module converts the 28 volts DC power supply to a stable and reliable 5 volt voltage, which is then supplied to the core processor module. For example... Figure 2As shown, the core chip of the power module, VT4274DV50-T (labeled U1 in the figure), uses a domestically produced high-performance automotive LDO 400mA linear power IC from Nanjing Paia Electronics. This automotive-grade low-dropout linear regulator (LDO) circuit outputs 5V and is a high-performance, high-reliability LDO circuit with a withstand voltage of 45V, a 400mA output current, and power fluctuations of less than 1%. It has comprehensive protection functions (reverse polarity protection, overvoltage protection, overcurrent protection, overtemperature protection, and overpower protection). It meets AEC-Q100 standards and is used in the automotive electronics field, in a TO-252-2 package. The power module includes circuit protection; the SMBJ diode (labeled Z1 in the figure) is a high-efficiency surge overvoltage protection device used for circuit protection. Diode D1 provides reverse polarity protection, R1-R4 provide current limiting, and other components are peripheral circuits of the VT4274DV50-T.

[0033] like Figure 3 As shown, the core processor module uses the domestically produced new automotive-grade chip, GigaDevice's GD32A503RDT3LQFP64 (labeled U2 in the figure). The GD32A503RDT3 is a new 32-bit automotive-grade microcontroller based on the Arm® Cortex®-M33 processor. It includes two AHB buses: a data bus and a system bus. The memory organization adopts a Harvard architecture, with memory mapping and up to 4GB of storage space, fully ensuring system flexibility and scalability. The GD32A503RDT3 features low interrupt latency and low-cost debugging. Its integrated and advanced features make the GD32A503RDT3 suitable for market products requiring high-performance and low-power microcontrollers. Based on the Armv8 architecture, the GD32A503RDT3 supports a powerful and scalable instruction set, including general-purpose data processing I / O control tasks, enhanced data processing bit-field operations, and DSP. The OSCOUT and OSCIN pins of the U2 chip GD32A503RDT3, along with resistor R25, capacitor C22, and crystal oscillator Y1, provide a reliable oscillation source for the U2 chip's operation. Resistor R22 and capacitor C21 form a reset circuit, and J2 is the interface for program upgrades and downloads. Resistor R18 and LED1 form an indicator light circuit.

[0034] The memory module is used to remember the transmitted CAN signal values. Figure 4 For memory modules, Figure 4 The U61 is an EEPROM chip that communicates with the D32A503RDT3 microcontroller via two-wire IIC communication through its SCL and SDA pins to store data. The core processor module integrates the SCL (pin 47) and SDA (pin 48) interfaces for IIC communication with the memory module.

[0035] like Figure 5As shown, the chip in the CAN transceiver module is model TJA1050. U3 and U4 in the CAN transceiver module use the TJA1050 chip. The TJA1050 chip supports the CAN 2.0B protocol and can provide a data transmission rate of up to 1Mbps, meeting the needs of fast data exchange. This chip provides good electrical isolation, effectively preventing damage to the system from high-voltage transients and enhancing system stability. The chip has high electromagnetic compatibility (EMC) and electrostatic discharge (ESD) resistance, enabling it to adapt to harsh working environments. The chip has built-in overvoltage and undervoltage protection, as well as short-circuit protection, protecting the bus from unexpected situations. The chip's pin layout is reasonable, making it easy to place and solder on the circuit board, and its interface with the microcontroller is simple, reducing the complexity of system integration. This chip has good compatibility with other CAN transceivers. Figure 5 T1 and T2 in the circuit use the ACT45B-510-2P, a high-performance common-mode choke / filter primarily used to improve the electromagnetic compatibility (EMC) performance of this solution. R21, R23, and R24, R26 are the CAN terminating resistors. The core processor module integrates a CAN1 interface (pins 55 and 56) for communication with two CAN transceiver modules; the CAN2 interface (pins 33 and 34) can be used for CAN communication with the CAN transceiver modules.

[0036] Additionally, a power supply module with short-circuit protection provides a short-circuit protected power supply for the voice alarm module.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detection device for a CAN bus voice alarm module for a mine dump truck, characterized in that, Comprise: Power processing module, power processing module is used for the rated voltage of direct current to 5 volts voltage; Core processor module, power processing module is used for the core processor module power supply, the core processor module is used for sending engine coolant temperature CAN signal, oil pressure CAN signal, instrument speed CAN signal, engine speed CAN signal, air pressure front brake CAN signal and air pressure rear brake CAN signal; CAN transceiver module, CAN transceiver module is used for connecting core processor module and voice alarm module; Power module, power module is used for the voice alarm module power supply.

2. The detection device of the CAN bus voice alarm module for mine dump truck according to claim 1, characterized in that, Also includes the key processing module, the key processing module is used for switching heart processing module for sending CAN signal.

3. The detection device of the CAN bus voice alarm module for mine dump truck according to claim 1, characterized in that, The rated voltage of direct current is 28 volts.

4. The detection device for the CAN bus voice alarm module of a mine dump truck according to claim 1, characterized in that, Memory module is used for memory sending CAN signal value.

5. The detection device of a CAN bus voice alarm module for a mine dump truck according to claim 1, characterized in that, The model of chip in CAN transceiver module is TJA1050.

6. The CAN bus voice alarm module detection device for a mine dump truck according to claim 1, characterized in that, The model of core processor module is GD32A503RDT3.

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