CN209797293U

CN209797293U - Intelligent monitoring and alarming system for black box of tower crane

Info

Publication number: CN209797293U
Application number: CN201921243306.4U
Authority: CN
Inventors: 王北一
Original assignee: Guangdong Institute of Textile Technology
Current assignee: Guangdong Vocational and Technical College; Guangdong Institute of Textile Technology
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2019-12-17
Anticipated expiration: 2029-08-02

Abstract

the utility model relates to a black box intelligent monitoring alarm system of tower crane belongs to hoist technical field, include: bridge measuring module, the amplifying module, the filtering module, the overvoltage protection module, main control chip, the LCD screen, the button, memory and power module, bridge measuring module gathers hoist moment signal, moment signal passes through the amplifying module in proper order, the filtering module, overvoltage protection module finally carries to main control chip, main control chip passes through the circuit and links to each other with the LCD screen, button and power module all link to each other with main control chip through the circuit, the memory links to each other with main control chip through the circuit and carries out signal transmission, the computer passes through level conversion chip and links to each other with main control chip, main control chip passes through the circuit and links to each other with the ball switch that sets up on the hoist. The utility model discloses a ball switch monitoring tower crane rocks the degree, comes mobile crane moment signal through the resistance foil gage among the electric bridge measuring module simultaneously, and then monitors hoist moment.

Description

intelligent monitoring and alarming system for black box of tower crane

Technical Field

the utility model relates to a hoist technical field especially relates to a tower crane black box intelligent monitoring alarm system.

background

In recent years, with the enhancement of infrastructure construction in China, large-scale engineering machinery is developed towards large-scale and automation. The control system of the tower crane is more and more complex, and the moment of the tower crane cannot be monitored in the operation process of the tower crane, so that faults exist, property loss can be caused, and the life and property safety of people can be endangered.

SUMMERY OF THE UTILITY MODEL

the utility model discloses a solve tower crane operation in-process and can't monitor hoist moment, therefore there is the trouble, not only can cause loss of property, still can endanger people's the technical problem of the security of the lives and property, and then provide a tower crane black box intelligent monitoring alarm system.

The utility model adopts the technical scheme that:

An intelligent monitoring and alarming system for a black box of a tower crane comprises: a bridge measuring module, an amplifying module, a filtering module, an overvoltage protection module, a main control chip, a liquid crystal screen, a key, a memory and a power supply module,

the bridge measurement module collects a crane moment signal, the moment signal is sequentially transmitted to the main control chip through the amplification module, the filtering module and the overvoltage protection module, the main control chip is connected with the liquid crystal display through a circuit, the keys and the power supply module are connected with the main control chip through a circuit, and the memory is connected with the main control chip through a circuit to carry out signal transmission;

the computer is connected with the main control chip through the level conversion chip;

The main control chip is connected with a ball switch arranged on the crane through a circuit.

Further, the specific model of the main control chip is AD μ C812.

Further, the specific type of the memory is AT24C 256.

Further, the level shift chip is specifically MAX 232.

Further, the specific model of the ball switch is SW-520V.

the utility model discloses following beneficial effect has to prior art:

the utility model discloses a ball switch monitoring tower crane rocks the degree, comes mobile crane moment signal through the resistance foil gage among the electric bridge measuring module simultaneously, and then monitors hoist moment, effectively prevents the occurence of failure.

Drawings

Fig. 1 is a block diagram of the present invention;

FIG. 2 is a circuit diagram of a bridge measurement module according to the present invention;

Fig. 3 is a circuit diagram of the amplifying module of the present invention;

Fig. 4 is a circuit diagram of the filter module of the present invention;

fig. 5 is a circuit diagram of the overvoltage protection module of the present invention;

Fig. 6 is a serial port connection circuit diagram of the level shift chip of the present invention;

FIG. 7 is a circuit diagram of the key connection of the present invention;

Fig. 8 is a circuit diagram of the interface between the lcd panel and the main control chip;

fig. 9 is a circuit diagram of the interface between the memory and the main control chip of the present invention;

Fig. 10 is a circuit diagram of the power module of the present invention;

Fig. 11 is an interface circuit diagram of the ball switch and the main control chip of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

an intelligent monitoring and alarming system for a black box of a tower crane comprises: a bridge measuring module 1, an amplifying module 2, a filtering module 3, an overvoltage protection module 4, a main control chip 5, a liquid crystal screen 6, a key 7, a memory 8 and a power module 9,

the bridge measurement module 1 collects crane moment signals, R1 and R2 in the bridge measurement module 1 are BF350 high-precision resistance strain gauges respectively, the strain of an arch bar is converted into the change of resistance values, the moment signals are sequentially transmitted to the main control chip 5 through the amplification module 2, the filter module 3 and the overvoltage protection module 4, the amplification module 2 amplifies the moment signals, the amplified signals are transmitted to an A/D acquisition end of the main control chip 5 through an overvoltage protection circuit, as shown in figure 5, R31 in the circuit is a current-limiting resistor, C32 plays a role in filtering, the signals are more stable, D9 and D10 form the overvoltage protection circuit to prevent the overvoltage protection circuit from being too high or too low and damaging the single chip microcomputer, the main control chip 5 is connected with the liquid crystal screen 6 through a circuit, the liquid crystal screen 6 can prompt monitoring personnel to play an alarm role, the key 7 and the power supply module 9 are both connected with the main control chip 5 through circuits, the power module 9 is to provide a digital direct current power supply and an analog direct current power supply for the system, the utility model adopts the LM7805 and the LM7905 to combine with a series of filtering and voltage stabilizing to design various power supplies required by the system, the memory 8 is connected with the main control chip 5 through a circuit to carry out signal transmission, and the memory 8 is used for storing monitoring information;

the computer 12 is connected with the main control chip 5 through the level conversion chip 10;

The main control chip 5 is connected with a ball switch 11 arranged on the crane through a circuit, the SW-520V is a low-current ball switch, and when the main control chip is shaken by external force or a set angle is 45 degrees higher than a conduction angle, two pins are conducted to be in a short-circuit state.

The specific model of the main control chip 5 is AD μ C812.

The specific model of the memory 8 is AT24C 256.

the level shift chip 10 is specifically MAX 232.

The specific model of the ball switch 11 is SW-520V.

The working process is as follows:

firstly, strain of an arch bar is obtained for BF350 high-precision resistance strain gauges through R1 and R2 in an electric bridge measuring module 1 respectively, so that a moment signal is obtained, the moment signal passes through an amplifying module 2 and then passes through a filtering module 3, the filtered signal enters an overvoltage protection module 4 and finally enters a main control chip 5, SW-520V is a small-current ball switch, when the arch bar is shaken by external force or a set angle is 45 degrees higher than the conduction angle, two pins are conducted to be in a short-circuit state, the signal is sent to the main control chip 5, and the main control chip 5 displays moment parameters and the state of the ball switch through a liquid crystal display 6 to give a prompt and alarm.

Claims

1. An intelligent monitoring and alarming system for a black box of a tower crane comprises: the device comprises an electric bridge measuring module (1), an amplifying module (2), a filtering module (3), an overvoltage protection module (4), a main control chip (5), a liquid crystal screen (6), a key (7), a memory (8) and a power supply module (9),

The crane moment signal is collected by the electric bridge measuring module (1), the moment signal is sequentially transmitted to the main control chip (5) through the amplifying module (2), the filtering module (3) and the overvoltage protection module (4), the main control chip (5) is connected with the liquid crystal screen (6) through a circuit, the keys (7) and the power supply module (9) are connected with the main control chip (5) through a circuit, and the memory (8) is connected with the main control chip (5) through a circuit to transmit signals;

the computer (12) is connected with the main control chip (5) through the level conversion chip (10);

The main control chip (5) is connected with a ball switch (11) arranged on the crane through a circuit.

2. the intelligent monitoring and alarming system for the black box of the tower crane according to claim 1, wherein the specific model of the main control chip (5) is AD μ C812.

3. The intelligent monitoring and alarming system for the black box of the tower crane as claimed in claim 1, wherein the specific model of the memory (8) is AT24C 256.

4. The intelligent monitoring and alarming system for the black box of the tower crane according to claim 1, wherein the level conversion chip (10) is MAX 232.

5. the intelligent monitoring and alarming system for the black box of the tower crane as claimed in claim 1, wherein the specific model of the ball switch (11) is SW-520V.