CN211310639U

CN211310639U - Tower crane control system with defensive protection

Info

Publication number: CN211310639U
Application number: CN201922237809.7U
Authority: CN
Inventors: 赵健; 蔡先勇
Original assignee: Xuzhou Dongli Lifting Equipment Co ltd
Current assignee: Xuzhou Dongli Lifting Equipment Co ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-08-21
Anticipated expiration: 2029-12-13

Abstract

The utility model discloses a tower crane control system of defensive protection in area of tower crane integrated control field, including controller and the controller mainboard that is located the controller, the controller mainboard includes main control chip, relay and silicon controlled rectifier control module, still includes mutual inductance device, operational amplifier, operational amplification rectifier, wide voltage monitoring module, photoelectric coupling signal output module, still includes main power supply and AC motor, still includes wireless communication module, the video output module that is connected with the controller mainboard through data line, the controller mainboard passes through the video output module and is connected with the touch display screen, adopts novel stopper, can effectively prevent the circuit ageing adhesion and the mistake that artificial short circuit caused from starting or the power-on operation by force; a relay and a thyristor are used in a combined manner, and a current transformer and a voltage detector are added for monitoring the output end; by adopting the novel resistance circuit, personal authentication systems such as face recognition and the like can not be short-circuited.

Description

Tower crane control system with defensive protection

Technical Field

The utility model relates to a tower crane integrated control technical field specifically is a tower crane control system of defensive protection in area.

Background

At present, no tower crane integrated control system for protecting safety protection devices such as a limiter, face recognition, line current conditions and the like and sensors is available in the market. The existing technical scheme can directly short-circuit the safety protection device or the sensor in the operation of the tower crane to cause actual electrification, and can be used without limit after deceiving the master control system, so that potential safety hazards are caused in the use process. The prior art does not effectively detect the short circuit and open circuit problems caused by line aging, and can be forcibly used under the condition, so that accidents are caused.

The moment limiter, the weight limiter, the height limit, the amplitude limit and the rotation limit (hereinafter referred to as a safety protection device) installed on the existing tower crane are both of a multifunctional mechanical trigger type and a sensing type, and can be manually short-circuited when the safety protection device is damaged, fails or is aged to cause short circuit and open circuit, and the control cables of the input end and the output end of the safety protection device are broken and rotate in use, so that the safety protection device is forcibly used.

The existing safety protection device and the sensor can be manually unlocked so as to forcibly start the tower crane. Through years of research, a scheme which is better than the existing safety protection device and the tower crane control system is developed, and the crane operation line and the secondary line can be monitored and calculated in real time. The computer can not be forced to start under the conditions of short circuit and open circuit caused by man-made or circuit aging, thereby avoiding safety accidents. Non-authentication workers can not conduct forced startup operation through short-circuit face recognition and other authentication function modules, and therefore potential safety hazards are avoided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take tower crane control system of defensive protection to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a tower crane control system with defensive protection comprises a controller and a controller mainboard positioned in the controller, wherein the controller mainboard comprises a main control chip, a relay and a silicon controlled control module, the silicon controlled control module is respectively connected with the main control chip and the relay, the silicon controlled control module comprises a silicon controlled control chip and a silicon controlled, and the silicon controlled control chip outputs a low-voltage direct current control signal through the main control chip to control the silicon controlled control module to be switched on and off;

the mutual inductance device outputs the current change value to the operational amplifier, the operational amplifier amplifies the current change value input by the mutual inductance device and outputs the generated low-voltage current to the operational amplification rectifier, the main control chip is respectively connected with the operational amplification rectifier and the photoelectric coupling signal output module through a data line, and the operational amplification rectifier rectifies the input current of the operational amplifier, generates a current signal effectively recognized by the main control chip and outputs the current signal to the main control chip; the system also comprises a wide voltage monitoring module, a photoelectric coupling signal output module and a control module, wherein the wide voltage monitoring module is used for comparing the voltage of two control outgoing lines of the main power supply, generating a primary low-voltage direct current signal and outputting the primary low-voltage direct current signal to the photoelectric coupling signal output module;

the main control chip is connected with the limiter, the angle sensor, the tension sensor and the face recognition switch through sensor line interfaces.

Preferably, the controller comprises a housing and a line outlet, the controller main board is located in the housing, and the power and data lines on the controller main board are accessed through the line outlet.

Preferably, the relay adopts a 12V direct current control relay and is used for controlling the on-off of a high-voltage alternating current circuit, and the silicon controlled rectifier is used for directly controlling the on-off of the alternating current circuit.

Preferably, the photoelectric coupling signal output module is used for outputting a low-voltage electric signal and preventing the wide voltage monitoring module from being damaged by the main control chip through a line after being broken down and burned out under high voltage.

Preferably, the intelligent alarm further comprises an alarm circuit module, the main control chip controls the alarm circuit module through a relay, and the alarm circuit module is connected with the external alternating-current alarm through an alarm circuit output interface.

Preferably, still include wireless communication module, the video output module that is connected through data line and controller mainboard, the controller mainboard passes through the video output module and is connected with touch display screen, still includes gang switch.

Preferably, the controller also comprises a circuit board connected with the controller main board through a data line

The sensor line interface comprises a plurality of sensor interfaces and is used for accessing a plurality of sensors;

the current overcurrent fuse is used for automatically burning off when the current of the alternating current on the action circuit is overlarge;

the data storage chip is used for storing preset data and operation data;

and the multi-channel electronic control switch is used for controlling the relay and directly outputting a 3.3V low-voltage control signal to 12V control current.

Preferably, the main power supply comprises a 12V alternating current/direct current wide voltage transformation power supply, a 5V direct current voltage reduction power supply, a 3.3V direct current voltage reduction power supply, an alternating current power circuit and a low-voltage direct current circuit, the main power supply is connected with the 12V alternating current/direct current wide voltage transformation power supply, a wide voltage monitoring module, a gang switch and an alternating current contactor through the alternating current power circuit, the main power supply is connected with an alternating current alarm through a relay, the main power supply is connected with an alternating current motor through the alternating current contactor, the main power supply is sequentially connected with the gang switch, a current overcurrent fuse, the relay, a silicon controlled module, a mutual inductor and the alternating current contactor and then connected with the main power supply to form a loop, the 12V alternating current/direct current wide voltage transformation power supply supplies power to the 5V direct current voltage reduction power supply, an operational amplifier, an operational amplification rectifier and a, The wireless communication module and the sensor line interface supply power, and the 3.3V direct-current voltage reduction power supply supplies power to the main control chip, the video output module and the sensor line interface.

Preferably, the limiter is connected with a low-resistance resistor, a high-resistance resistor and a microswitch, the low-resistance resistor and the high-resistance resistor enable an electric signal of the limiter to form a fixed ratio with an output voltage after being output back to the main control chip, and the limiter identifies the state of the alternating current motor and the state of the limiter circuit through comparing the voltages of two circuits of the microswitch.

Compared with the prior art, the beneficial effects of the utility model are that:

1. adopt novel stopper, can effectively prevent the mistake that ageing adhesion of circuit and artificial short circuit caused and start or the circular telegram operation of forcing.

2. A relay and a thyristor are used in a combined manner, and a current transformer and a voltage detector are added for monitoring the output end; the sensor can be prevented from being damaged or the output end is removed and then forced to start operation; when the current in the working circuit is too large or too small, active power-off operation is carried out, and accidents are prevented.

3. By adopting the novel resistance circuit, personal authentication systems such as face recognition and the like can not be short-circuited, so that the system is forced to start up to operate, and the misoperation of non-authenticated workers is effectively prevented.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a high-voltage line of a hoisting system of the present invention;

FIG. 2 is a schematic diagram of a DC power supply circuit according to the present invention;

FIG. 3 is a schematic diagram of a control circuit according to the present invention;

fig. 4 is a schematic diagram of the connection of the limit stop microswitch, the sensor circuit and the authentication interface of the present invention;

FIG. 5 is a schematic diagram of the current detection circuit of the present invention;

fig. 6 is a schematic diagram of the relay control circuit and video output of the present invention;

FIG. 7 is a schematic diagram of a wide voltage detection circuit according to the present invention;

FIG. 8 is a schematic diagram of the thyristor control circuit of the present invention;

FIG. 9 is a schematic diagram of a controller according to the present invention;

fig. 10 is a schematic diagram of the state of the system according to the present invention for determining the state of the sensor by the voltage;

FIG. 11 is a schematic diagram illustrating that the system of the present invention determines the authority control of the tower crane;

fig. 12 is a schematic diagram of the system setting parameter threshold fluctuation or trend.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a controller; 101. a housing; 102. a line outlet; 2. a controller main board; 201. a main control chip; 202. a relay; 203. a silicon controlled control module; 2031. a silicon controlled control chip; 2032. silicon controlled rectifier; 204. a mutual inductance device; 205. an operational amplifier; 206. an operational amplification rectifier; 207. a wide voltage monitoring module; 208. a photoelectric coupling signal output module; 209. an alarm circuit module; 2091. an alarm circuit output interface; 2010. a wireless communication module; 2011. a video output module; 2012. a sensor line interface; 2013. a current overcurrent fuse; 2014. a data storage chip; 2015. a plurality of electronic control switches; 3. a main power supply; 301. 12V alternating current and direct current wide-amplitude variable voltage power supply; 302. a 5V direct current voltage reduction power supply; 303. 3.3V DC step-down power supply; 304. an alternating current power line; 305. a low voltage DC line; 4. an AC motor; 501. a stopper; 5011. a low resistance resistor; 5012. a high resistance resistor; 5013. a microswitch; 502. an angle sensor; 503. a tension sensor; 504. a face recognition switch; 6. a ganged switch; 7. a touch-sensitive display screen; 8. an AC contactor; 9. and (4) an alternating current alarm.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-11, the present invention provides a technical solution: the utility model provides a take tower crane control system of defensive protection, includes controller 1 and the controller mainboard 2 that is located controller 1, and controller 1 is tower crane control system's hardware main part, and controller mainboard 2 is tower crane control system's hardware main part, controller mainboard 2 includes main control chip 201, relay 202 and silicon controlled rectifier control module 203, and main control chip 201 is crane tower crane control system's system operation unit for handle various input signal, and control each operation circuit module. The thyristor control module 203 is respectively connected with the main control chip 201 and the relay 202, the thyristor control module 203 comprises a thyristor control chip 2031 and a thyristor 2032, and the thyristor control chip 2031 outputs a low-voltage direct-current control signal through the main control chip 201 to control the on-off of the thyristor control module 203;

the mutual inductance device 204 is used for performing low-voltage conversion output on the alternating current circuit change of the control end, the mutual inductance device 204 outputs the current to the operational amplifier 205, the operational amplifier 205 amplifies the current change value input by the mutual inductance device 204, and outputs the low-voltage current with a larger change value to the operational amplification rectifier 206, the main control chip 201 is respectively connected with the operational amplification rectifier 206 and the photoelectric coupling signal output module 208 through a data line, the operational amplification rectifier 206 rectifies the input current of the operational amplifier 205, generates a current signal effectively recognized by the main control chip 201, and outputs the current signal to the main control chip 201;

still include wide voltage monitoring module 207 for two control outgoing lines to the main power carry out the voltage comparison, produce low pressure direct current signal once, and export to optoelectronic coupling signal output module 208, optoelectronic coupling signal output module 208 is used for monitoring alternating voltage and changes to carry out signal identification by main control chip 201, in order to judge tower machine running power supply operating condition, and control, wide voltage monitoring module 207 can monitor alternating voltage and change, and carry out signal identification by main control chip 201, thereby judge tower machine running power supply operating condition, and control. If the tower crane is operated under the abnormal states of undervoltage and overvoltage, all electric parts of the whole tower crane can be damaged. Meanwhile, when the motor is in operation, the voltage is not changed, and the motor can be judged not to be normally started. The system may make a stop command until the error is resolved.

The main control chip 201 is connected with the limiter 501, the angle sensor 502, the tension sensor 503 and the face recognition switch 504 through the sensor line interface 2012. The angle sensor 502 is used for inputting the horizontal rotation angle of the crane, and is the prior art; the tension sensor 503 is used for inputting the tension on the steel wire rope brought by the hoisted object of the crane so as to calculate the weight of the hoisted object, and is the prior art; the face recognition switch 504 is used for face recognition of an operator, and a common face recognition switch in the prior art only has two functions of on-off. After resistors are added into the switching circuit, different voltage and current loops can be formed. Five states can be recognized by the main control chip 201. The linked switch 6 is a handle mechanism for the operation of the tower crane and belongs to the prior art.

The controller 1 comprises a housing 101 and a line outlet 102, the controller motherboard 2 is located in the housing 101, the power and data lines on the controller motherboard 2 are accessed through the line outlet 102, the housing 101 is used for protecting the controller motherboard 2, and the line outlet 102 is used for accessing the power and data lines.

The relay 202 is a 12V dc control relay, and is configured to control on/off of a high-voltage ac circuit, and the thyristor 2032 is configured to directly control on/off of the ac circuit.

The photoelectric coupling signal output module 208 is configured to output a low-voltage electrical signal and prevent the main control chip 201 from being damaged by the wide voltage monitoring module 207 through a line after breakdown and burnout at a high voltage. When the semiconductor triode is used for voltage reduction and signal output without photoelectric coupling, once a high-voltage breakdown phenomenon occurs, all direct-current components on the whole mainboard circuit are damaged.

The intelligent alarm device further comprises an alarm circuit module 209, the main control chip 201 controls the alarm circuit module 209 through the relay 202, and the alarm circuit module 209 is connected with the external alternating current alarm 9 through an alarm circuit output interface 2091. The alternating current high-power alarm is directly used, so that the sound of the alarm can be transmitted farther, and the processing by safety personnel is facilitated. The ac alarm 9 is high power and is not suitable for being disposed in a sealed box.

The intelligent controller also comprises a wireless communication module 2010 and a video output module 2011 which are connected with the controller mainboard 2 through data lines, wherein the controller mainboard 2 is connected with the touch display screen 7 through the video output module 2011, and the intelligent controller also comprises a linkage switch 6. By additionally arranging the wireless communication module 2010, the tower crane control system can remotely output monitoring information or alarm information. And inputting effective information or control information remotely. Belongs to the prior art. The video output module 2011 is a product in the prior art, and is used for displaying a system state and inputting information for operation on the touch display screen 7.

The touch display screen 7 is used for displaying the running state of the tower crane; the alternating current contactor 8 is an alternating current motor 4 operation controller on the tower crane and is used for exchanging the direction of a power circuit so as to enable the motor to run forwards and backwards; the AC alarm 9 is a high-power acousto-optic alarm, and the touch display screen 7, the AC contactor 8 and the AC alarm 9 are all products in the prior art.

Wherein, also comprises a controller mainboard 2 connected with the data line

A sensor line interface 2012, including a plurality of sensor interfaces, for accessing a plurality of sensors;

the current overcurrent fuse 2013 is used for automatically burning off when the current of the alternating current on the action circuit is too large so as to prevent the mainboard from being burnt out due to overcurrent;

the data storage chip 2014 is used for storing preset data and operation data;

and the multi-path electronic control switch 2015 is used for controlling the relay 202 and directly outputting a 3.3V low-voltage control signal to 12V control current. The use of multiple electronic control switches 2015, which are darlington transistors, for controlling the relay 202 has the advantage of reducing the difficulty of circuit layout on the circuit board and at the same time greatly reducing the cost. And a seven-path input and output control relay. The purchase price is lower than two yuan.

Wherein the main power supply 3 comprises a 12V AC/DC wide-width variable voltage power supply 301, a 5V DC step-down power supply 302, a 3.3V DC step-down power supply 303, an AC power line 304 and a low-voltage DC line 305,

the 12V alternating current and direct current wide voltage transformation power supply 301 uses a small transformer, and can efficiently convert a high-voltage alternating current power supply into a 12V direct current power supply so as to supply power to an action mechanism on the 2 main boards. Meanwhile, the transformer can use a power supply with various alternating-current voltages, so that the applicability of the system is wider (the small transformer is used for voltage reduction conversion, the conversion efficiency is higher than that of conversion through a semiconductor power supply circuit, the energy consumption is effectively reduced, the loss and the heat generation are reduced, and the defect is that the power supply circuit is larger than the semiconductor power supply circuit and cannot be used in a plurality of ways in a limited space.)

The 5V dc buck power supply 302 can greatly reduce the size of the power supply circuit while ensuring power output through a three-terminal voltage regulator block capacitor circuit. The circuit complexity and thus the electromagnetic interference caused by the use of a small transformer are reduced.

The 3.3V dc buck power supply 303 can greatly reduce the size of the power supply circuit while ensuring power output through a three-terminal voltage regulator block capacitor circuit. The circuit complexity and thus the electromagnetic interference caused by the use of a small transformer are reduced.

The ac power line 304 is a high power ac circuit, the low voltage dc line 305 is used to transmit low voltage dc, 12V for the relay 202, 3.3 and 5V for the chip and different voltage specification sensors. The power circuit with the continuous direct-current voltage reduction function can effectively reduce the complexity of circuit composition on the controller mainboard 2, reduce electromagnetic interference and enable the current of the mainboard circuit to be more stable.

The connection mode is as follows: the main power supply 3 is connected with a 12V alternating current and direct current wide voltage transformation power supply 301, a wide voltage monitoring module 207, a linked switch 6 and an alternating current contactor 8 through an alternating current power line 304, the forward and reverse rotation functions are achieved through different wiring directions of the alternating current contactor 8, the main power supply 3 is connected with an alternating current alarm 9 through a relay 202, the main power supply 3 is connected with an alternating current motor 4 through the alternating current contactor 8, the main power supply 3 is sequentially connected with the linked switch 6, a current overcurrent fuse connection 2013, the relay 202, a silicon controlled control module 203, a mutual inductor 204 and the alternating current contactor 8 and then connected with the main power supply 3 to form a loop, the 12V alternating current and direct current wide voltage transformation power supply 301 supplies power to a 5V direct current step-down power supply 302, an operational amplifier 205, an operational amplification rectifier 206 and a multi-path electronic control switch 2015, and the 5V direct current, The wireless communication module 2010 and the sensor line interface 2012 supply power, and the 3.3V dc voltage reduction power supply 303 supplies power to the main control chip 201, the video output module 2011 and the sensor line interface 2012.

The limiter 501 is connected with a low-resistance resistor 5011, a high-resistance resistor 5012 and a microswitch 5013, the limiter 501 can enable a controller to accurately identify the state of a motor and the state of a limiter circuit by comparing the voltages of two circuits of the microswitch 5013, and prevent the limiter or the circuit from being forcibly electrified and operated when damaged, the low-resistance resistor 5011 and the high-resistance resistor 5012 enable an electric signal of the limiter 501 to form a fixed ratio with an output voltage after being output back to the main control chip 201, and the low-resistance resistor 5011 and the high-resistance resistor 5012 enable the electric signal of the limiter to form a fixed ratio with the output voltage after being output back to the main control chip 201 after being output by using resistors. At this time, when there is an input voltage different from the normal ratio due to line aging, it can be determined that the limiter 501 has an error (short circuit, ground leakage), and the tower crane is prohibited from operating. When a sensing line at the front end of the limiter 501 is artificially short-circuited, the limiter 501 can be judged to be short-circuited due to the fact that input and output voltages are the same, and the operation of the tower crane is forbidden. When there is no input voltage. It can be determined that the circuit of the limiter 501 is broken and the tower crane is prohibited from operating. The limiter 501 compares the voltages of two circuits of the microswitch 5013, and identifies the state of the alternating current motor 4 and the state of the limiter 501 circuit through the main control chip 201, and the microswitch 5013 is the prior art and is used for switching the circuits through micro action. The common microswitch has no two resistors with different resistance values and no voltage comparison in the system, and can only judge on and off states without judging whether short circuit or grounding leakage exists.

The specific working principle is as follows:

as shown in fig. 1, for a schematic diagram of a high-voltage line of a hoisting system, the internal wiring relay 202 and the thyristor control module 203 of the controller 1 are both inside. Therefore, when the non-working person wants to forcibly turn on the computer, the non-working person can only destroy the controller 1 and reconnect the ac line, and avoid the controller main board 2. However, such a procedure is difficult for non-workers. As shown in fig. 2, which is a schematic diagram of a dc power supply line, dc power with different voltages is supplied to different components, so that the dc power supply line can be used and maintained more safely and easily. Fig. 3 is a schematic diagram of a control circuit, which is a schematic diagram of circuit connection when the tower crane operates as a primary motor. As shown in fig. 4, the schematic diagram of the connection between the limit stop microswitch, the sensor circuit and the authentication interface is shown in fig. 5, the schematic diagram of the current detection circuit is shown in fig. 6, and the schematic diagram of the relay control circuit and the video output is shown, and the main control chip 201 controls the 12V dc circuit through the multi-channel electronic control switch 2015, thereby controlling the relay 202. When the system detects an abnormal state, the relay 202 can be suspended to prevent the relay from passing through the alternating current, so that potential safety hazards are avoided. Meanwhile, the multi-channel electronic control switch 2015 supplies power to the alternating current alarm 9 to make the alternating current alarm capable of whistling and alarming, so that the operators and the monitoring managers can hear the alarm sound. Fig. 7 is a schematic diagram of the wide voltage detection circuit, such as the connection relationship between the wide voltage monitoring module 207 and the photo-coupled signal output module 208 and the connection relationship between the main control chip 201 in the right diagram. When the wide voltage monitoring module 207 is broken down or damaged by a high voltage, if a situation that the high voltage is output to the photoelectric coupling signal output module 208 occurs, since the photoelectric coupling circuit is adopted, no high-voltage current flows into the main control chip 201, and thus the whole mainboard low-voltage circuit is damaged. As shown in fig. 8, the main control chip 201 controls the thyristor 2032 by directly controlling the thyristor control chip 2031. In combination with the relay 202, the dual power-off protection function can be achieved. Can effectively prevent non-staff from carrying out illegal wiring operation. Meanwhile, the two power-off switches act simultaneously, so that the system can also perform power-off operation when one device cannot be controlled. As shown in fig. 9, which is a schematic diagram of a controller, and as shown in fig. 10, which is a schematic diagram of a state of a system through a voltage determination sensor, the system can make a correct determination in time by comparing normal voltage and operating voltage parameters in real time, so that an operator can inspect the system to prevent potential safety hazards. Fig. 11 is a schematic diagram illustrating authority control of the tower crane by the system through judgment. When any error occurs in the diagram, the system will turn off all relays 202 and thyristors 203. So that the potential safety hazard does not appear. If the operator operates the crane to move forward, one path of motor power supply is controlled, as shown in figure 2. When the motor runs, voltage and current are abnormal and fluctuate or trend beyond the set parameter threshold of the system, as shown in fig. 12, all the relays 202 and the silicon controlled circuit 203 are hung up by the system.

In the first step of the use in a construction site, constructors connect the sensors and the controller 1 after the tower crane main body is completely installed.

When the connection is good, the power-on self-test can be carried out.

Firstly, the system detects the input voltage and current of the sensor, and stores the detected input voltage and current as basic data in the data storage chip 2014. And the worker leads in the face image of the operator to the face recognition switch as a formal operator. And then operating and debugging the tower crane by an operator. The tower crane is controlled by the linkage switch 6 to rotate, lift and change amplitude. And simultaneously, the parameters are input into the system through the touch display screen 6 and operated. Such as the rated hoisting weight, the maximum rotation angle, the amplitude variation distance and the like. At this time, the system can acquire the normal use voltage range parameter of the sensor and store the parameter in the data storage chip 2014 through the debugging of an operator. After debugging is completed, the tower crane can be normally used.

The relay 202 and the thyristor 2032 are simultaneously controlled by inputting the potential difference of the sensor, the data of the wide voltage detection module 207 and the data of the operational amplifier 205 and processing the data of the main control chip 201.

By using two resistors 501 with different resistance values to change the output potential difference, five states of normal, short circuit, leakage, unknown error and open circuit of the line can be detected simultaneously

The wide voltage detection module 207 detects the voltage, so that the main control chip 201 can detect the input voltage and control the relay 202 and the thyristor 2032 according to the voltage change value.

By detecting the operating circuit current by the operational amplifier 205, the relay 202 and the thyristor 2032 can be controlled simultaneously.

Different resistors 501 are additionally arranged on circuits of authentication modules such as a face recognition switch 504 and the like on the face recognition device to form potential difference data, so that the main control chip 201 can monitor the states of the authentication modules, namely five states (normal state, short circuit, leakage, unknown error and open circuit).

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a take tower crane control system of defensive protection which characterized in that: the controller comprises a controller (1) and a controller mainboard (2) positioned in the controller (1), wherein the controller mainboard (2) comprises a main control chip (201), a relay (202) and a controlled silicon control module (203), the controlled silicon control module (203) is respectively connected with the main control chip (201) and the relay (202), the controlled silicon control module (203) comprises a controlled silicon control chip (2031) and a controlled silicon (2032), and the controlled silicon control chip (2031) outputs a low-voltage direct current control signal through the main control chip (201) to control the on-off of the controlled silicon control module (203);

the mutual inductance device (204) is output to an operational amplifier (205), the operational amplifier (205) amplifies a current change value input by the mutual inductance device (204), and outputs a generated low-voltage current to an operational amplification rectifier (206), the main control chip (201) is respectively connected with the operational amplification rectifier (206) and a photoelectric coupling signal output module (208) through a data line, the operational amplification rectifier (206) rectifies the input current of the operational amplifier (205), generates a current signal effectively recognized by the main control chip (201), and outputs the current signal to the main control chip (201); the system is characterized by further comprising a wide voltage monitoring module (207) which is used for comparing the voltages of two control outgoing lines of the main power supply, generating a primary low-voltage direct-current signal and outputting the primary low-voltage direct-current signal to a photoelectric coupling signal output module (208), wherein the photoelectric coupling signal output module (208) is used for monitoring the alternating-current voltage change and carrying out signal identification by a main control chip (201) so as to judge the working state of the tower crane operation power supply and control the tower crane operation power supply;

the intelligent control system is characterized by further comprising a main power supply (3) and an alternating current motor (4), wherein the main control chip (201) is connected with the limiter (501), the angle sensor (502), the tension sensor (503) and the face recognition switch (504) through a sensor line interface (2012).

2. The tower crane control system with defensive protection of claim 1, wherein: the controller (1) comprises a shell (101) and a line outlet (102), the controller main board (2) is located in the shell (101), and power and data lines on the controller main board (2) are accessed through the line outlet (102).

3. The tower crane control system with defensive protection of claim 1, wherein: the relay (202) adopts a 12V direct current control relay and is used for controlling the on-off of a high-voltage alternating current circuit, and the controllable silicon (2032) is used for directly controlling the on-off of the alternating current circuit.

4. The tower crane control system with defensive protection of claim 1, wherein: the photoelectric coupling signal output module (208) is used for outputting a low-voltage electric signal and preventing the wide voltage monitoring module (207) from being damaged to the main control chip (201) through a line after being broken down and burnt out under high voltage.

5. The tower crane control system with defensive protection of claim 1, wherein: the intelligent alarm system is characterized by further comprising an alarm circuit module (209), the main control chip (201) controls the alarm circuit module (209) through a relay (202), and the alarm circuit module (209) is connected with the external alternating current alarm (9) through an alarm circuit output interface (2091).

6. The tower crane control system with defensive protection of claim 1, wherein: the intelligent controller is characterized by further comprising a wireless communication module (2010) and a video output module (2011) which are connected with the controller main board (2) through data lines, wherein the controller main board (2) is connected with the touch display screen (7) through the video output module (2011), and the intelligent controller also comprises a linked switch (6).

7. The tower crane control system with defensive protection of claim 1, wherein: further comprising a controller main board (2) connected with the data line

A sensor line interface (2012) including a plurality of sensor interfaces for interfacing to a plurality of sensors;

the current overcurrent fuse (2013) is used for automatically blowing when the current of alternating current on the action circuit is overlarge;

the data storage chip (2014) is used for storing preset data and operation data;

and the multi-path electronic control switch (2015) is used for controlling the relay (202) and directly outputting a 3.3V low-voltage control signal to 12V control current.

8. The defensively protected tower crane control system according to any one of claims 5-7, wherein: the main power supply (3) comprises a 12V alternating current and direct current wide variable voltage power supply (301), a 5V direct current step-down power supply (302), a 3.3V direct current step-down power supply (303), an alternating current power circuit (304) and a low-voltage direct current circuit (305), the main power supply (3) is connected with the 12V alternating current and direct current wide variable voltage power supply (301), a wide voltage monitoring module (207), a linkage switch (6) and an alternating current contactor (8) through the alternating current power circuit (304), the main power supply (3) is connected with an alternating current alarm (9) through a relay (202), the main power supply (3) is connected with an alternating current motor (4) through the alternating current contactor (8), the main power supply (3) is sequentially connected with the linkage switch (6), a current overcurrent fuse (2013), the relay (202), a silicon controlled rectifier control module (203), a mutual inductance device (204) and the alternating current contactor (8, form the return circuit, 12V alternating current-direct current broad width vary voltage power supply (301) are to 5V direct current step-down power supply (302), operational amplifier (205), operation amplification rectifier (206), multichannel electronic control switch (2015) power supply, 5V direct current step-down power supply (302) are to 3.3V direct current step-down power supply (303), wireless communication module (2010), sensor line interface (2012) power supply, 3.3V direct current step-down power supply (303) are to master control chip (201), video output module (2011), sensor line interface (2012) power supply.

9. The tower crane control system with defensive protection of claim 1, wherein: the limiter (501) is connected with the low-resistance resistor (5011), the high-resistance resistor (5012) and the microswitch (5013), the low-resistance resistor (5011) and the high-resistance resistor (5012) enable an electric signal of the limiter (501) to form a fixed ratio with an output voltage after being input back to the main control chip (201), and the limiter (501) identifies the state of the alternating current motor (4) and the state of the limiter (501) through the main control chip (201) by comparing the voltages of two circuits of the microswitch (5013).