CN204080913U - A kind of device extending excavator airborne communication terminal standby time - Google Patents

Abstract

The utility model discloses a device for prolonging the standby time of an excavator airborne communication terminal, which mainly includes a microcontroller electrically connected to each other, a data acquisition module, a storage battery power detection module and a wireless communication module. After the excavator is stopped and turned off, the battery power detection module detects the relevant parameters of the onboard battery, and the microcontroller estimates the remaining power of the battery and sets the data transmission cycle of the wireless communication module, and wakes up the wireless communication module according to this cycle. When the remaining power of the on-board battery is less than a preset value (for example, 10%), the on-board communication terminal will automatically shut down. This method not only reduces the power consumption of the onboard communication terminal of the excavator, but also prolongs the service life and standby time of the onboard battery of the excavator, effectively avoiding the failure of the excavator to start normally due to the exhaustion of the onboard battery. The disadvantages indirectly improve the work efficiency of the excavator at the construction site.

Description

A device for prolonging the standby time of excavator airborne communication terminal

technical field

The utility model relates to the technical field of excavator control, in particular to a device used on an excavator for extending the standby time of an airborne communication terminal.

Background technique

Usually, when the excavator is working on the construction site, the onboard communication terminal of the excavator needs to communicate with the remote monitoring center under normal circumstances. When the excavator is running, the onboard battery will automatically charge and provide working power for the onboard communication terminal. After the engine is turned off and parked, the onboard communication terminal still communicates with the remote monitoring The battery continuously supplies power to the on-board communication terminal. If the vehicle does not start running for a certain period of time, since the onboard battery cannot be charged automatically, the power of the onboard battery will gradually run out, and at the same time, the excavator's onboard communication terminal will also stop working. This seriously affects the service life of the onboard battery, and will cause the excavator to fail to start normally, lose contact with the remote monitoring center, indirectly reduce the working efficiency of the excavator, and cause delays in the construction period.

Utility model content

The purpose of this utility model is to provide a device for prolonging the standby time of the excavator airborne communication terminal. The defect that the excavator cannot start normally due to the short use time after parking and turning off the battery power is exhausted.

In order to achieve the above object, the solution of the present utility model is:

A device for extending the standby time of an excavator airborne communication terminal, mainly including a microcontroller, a data acquisition module, a battery power detection module and a wireless communication module; the data input end of the microcontroller is electrically connected to the data acquisition module connected to collect information data; the detection input terminal of the microcontroller is electrically connected to the battery power detection module to estimate the battery power and set the wireless data transmission period; the data output terminal of the microcontroller is connected to the wireless The communication modules are electrically connected for wireless data transmission.

The data acquisition module is electrically connected to the data input terminal of the microcontroller through a CAN bus interface.

After adopting the above scheme, the utility model provides a high measurement accuracy, strong stability, practical, safe and reliable device for prolonging the standby time of the on-board communication terminal of the excavator. Compared with the prior art, the beneficial effects brought by the utility model are mainly manifested in: after the excavator is stopped and turned off, the relevant parameters of the on-board battery are detected by the battery power detection module, and the remaining power of the battery is estimated by the microcontroller and wireless communication is set. The data transmission cycle of the module, and wake up the wireless communication module according to this cycle, and when the remaining power of the on-board battery is less than a preset value (such as 10%), the on-board communication terminal will automatically shut down. This method not only reduces the power consumption of the onboard communication terminal of the excavator, but also prolongs the service life and standby time of the onboard battery of the excavator, effectively avoiding the failure of the excavator to start normally due to the exhaustion of the onboard battery. The disadvantages indirectly improve the work efficiency of the excavator at the construction site.

Description of drawings

Fig. 1 is a hardware block diagram of the utility model excavator airborne communication terminal device;

Fig. 2 is a working mode block diagram of the utility model excavator airborne communication terminal device;

Fig. 3 is the working flowchart of the utility model excavator airborne communication terminal;

Fig. 4 is a curve showing the relationship between the data transmission cycle of the wireless communication module of the present invention and the remaining power of the on-board battery after the excavator is stopped and turned off.

Detailed ways

The present case will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

The utility model relates to a device for prolonging the standby time of an excavator airborne communication terminal. As shown in FIG. 1 , the airborne communication terminal device includes a microcontroller 1 , a data acquisition module 2 , a battery power detection module 3 , a (3G) wireless communication module 4 , a switching power supply module 5 and a positioning module 6 . The (3G) wireless communication module 4 is the part with the largest power consumption in the excavator airborne communication terminal, so the focus of reducing the power consumption of the communication terminal is to reduce the power consumption of the (3G) wireless communication module 4, in order to reduce the power consumption of the (3G) wireless communication module 4 power consumption, the utility model adopts a reasonable control effect on the data transmission cycle after the vehicle is turned off, so as to achieve the purpose of prolonging the standby time.

The switching power supply module 5 provides operating power for the (3G) wireless communication module 4, and the data acquisition module 2 and the positioning module 6 are all electrically connected to the data input end of the microcontroller 1, and are collected by the data acquisition module 2 and the positioning module 6 Related data such as excavator status parameters and position information that need to be transmitted are transmitted to the microcontroller 1 . The battery power detection module 3 is electrically connected to the on-board battery of the excavator. The battery power detection module 3 is electrically connected to the detection input terminal of the microcontroller 1. The battery power detection module 3 collects relevant parameters of the on-board battery and transmits them to the micro-controller. The controller 1 estimates the power of the battery by the microcontroller 1, and sets and controls the data transmission cycle of the wireless communication module 4 according to the relevant built-in program (the inverse functional relationship between the data transmission of the wireless communication module and the remaining power). The data output end of the microcontroller 1 is electrically connected with the wireless communication module 4 to realize external wireless data transmission.

As a preferred embodiment of the hardware of the airborne communication terminal device of the present invention, the microcontroller 1 adopts the integrated circuit chip of the STM32F103 model, the (3G) wireless communication module 4 adopts the SIM5218E module of SIMCOM Company, and the battery power detection module 3 adopts Freescale Semiconductor's MM912J637 smart battery sensor can accurately measure the voltage, current and temperature of a lead-acid battery and calculate the state of the battery, even under severe driving conditions. Positioning module 6 is Unicore's UM220 module, which supports joint positioning of BD2 and GPS dual systems, and only has an ultra-low power consumption of 350mW. The data acquisition module 2 is electrically connected to the data input terminal of the microcontroller 1 through a CAN bus interface and an RS-232 interface. What needs to be specially explained here is that each module of the new airborne communication terminal device and the functions of each module are all known technologies that can be realized. The core innovation of the new model lies in the electrical connection combination of each module to extend the standby time the goal of.

The device for prolonging the standby time of the on-board communication terminal of the excavator described in the present invention, its working method refers to the working mode of the communication terminal in Fig. 2 and the work flow diagram of Fig. 3, and includes the following steps:

1) After the excavator is shut down and turned off, the microcontroller 1 makes the wireless communication module 4 enter the sleep mode through the AT command and sets the timing time of the timer, and the microcontroller 1 enters the sleep mode;

2) When the time reaches the preset time of the timer, a timing interrupt is generated, and the microcontroller 1 is woken up in the interrupt service routine;

3) When the microcontroller 1 is awakened, the data acquisition module 2 collects relevant data of the excavator that needs to be transmitted, the microcontroller 1 wakes up the wireless communication module 4 through an AT command and performs a wireless data transmission, and the battery power detection module 3 collects Detect relevant parameters (including voltage, current, temperature, etc.) of the onboard storage battery and send them to the microcontroller 1;

4) Microcontroller 1 estimates the remaining power of the battery according to the formula. If it is lower than the preset value, it controls the communication terminal to power off and shut down; According to the inverse function relationship between the data transmission cycle and the remaining power, reset the timing time of the timer, and the microcontroller 1 enters the sleep mode;

5) Return to step 2).

Preferably, in the step 1), it can be set that the microcontroller 1 and the wireless communication module 4 enter the sleep mode after the excavator is shut down and turned off for a preset time (such as one hour). Therefore, in the normal working mode of the communication terminal, the excavator has been running or turned off for less than one hour, the power supply is sufficient, and all functions are running normally.

Preferably, in the step 4), the microcontroller 1 uses an online method to estimate the battery power in real time, that is, the excavator airborne communication terminal adds an online, real-time algorithm program for estimating the battery power in the software part.

Preferably, in the step 4), the preset value of battery power is 10% power. When the on-board battery of the excavator has 10% remaining power, the power supply is completely cut off, the on-board communication terminal is turned off, and the communication terminal enters the shutdown mode.

Preferably, in the step 4), the inverse functional relationship between the data transmission cycle and the remaining power is an exponential function, that is, y=ae ^-cx +b, where a, b, and c are constant coefficients, and the argument x is the remaining power , the dependent variable y is the data transmission period. In a specific embodiment, the relational formula of the exponential function is y=e ^(-x/20+9) +5, 10≤x≤100. The exponential function curve is shown in FIG. 4 . The microcontroller 1 sets the data transmission period y of the wireless communication module 4 with the estimated remaining power x, and wakes up the wireless communication module 4 according to this period. The wireless communication module 4 performs a data transmission after being woken up, and then enters a sleep mode, waiting for being woken up next time.

The above descriptions are only preferred embodiments of the present utility model, and all equivalent changes and modifications made in accordance with the claims of the present utility model shall fall within the scope of the claims of the present utility model.

Claims (2)

1. a kind of device that prolongs the standby time of excavator airborne communication terminal, it is characterized in that: mainly comprise micro-controller, data acquisition module, storage battery electric quantity detection module and wireless communication module; The data input end of described micro-controller and all The data acquisition module is electrically connected to collect information data; the detection input terminal of the microcontroller is electrically connected to the battery power detection module to estimate the battery power and set the wireless data transmission cycle; the data of the microcontroller The output end is electrically connected with the wireless communication module for wireless data transmission. 2. A kind of device for prolonging the standby time of excavator airborne communication terminal as claimed in claim 1, is characterized in that: described data acquisition module is electrically connected with the data input end of described micro-controller through CAN bus interface.