CN203682947U - Black box safety monitoring circuit of tower type crane - Google Patents
Black box safety monitoring circuit of tower type crane Download PDFInfo
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- CN203682947U CN203682947U CN201320686540.0U CN201320686540U CN203682947U CN 203682947 U CN203682947 U CN 203682947U CN 201320686540 U CN201320686540 U CN 201320686540U CN 203682947 U CN203682947 U CN 203682947U
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Abstract
The utility model discloses a black box safety monitoring circuit of a tower type crane. The black box safety monitoring circuit comprises a sensor unit, a sampling circuit, a main control circuit, a display circuit, a warning circuit, a relay drive circuit and a GPRS (General Packet Radio Service) wireless communication module, wherein each sensor in the sensor unit is connected with the sampling circuit; the sampling circuit and the display circuit are both connected with the main control circuit; the warning circuit and the GPRS wireless communication module are both connected with the main control circuit; the sensor unit comprises a weighing sensor, a rotation sensor, a variation amplitude sensor, a height sensor, an air velocity, a voltage sensor, a current sensor and a temperature sensor. The black box safety monitoring circuit of the tower type crane has the advantages of realizing remote monitoring on operating condition of the tower type crane and improving the safety and reliability in operation of the tower type crane.
Description
Technical field
The utility model relates to a kind of black box security monitoring circuit of tower crane.
Background technology
Tower crane (tower crane) is called for short tower machine, also claims tower crane, is made up of metal construction, operating mechanism and electric system three parts.Metal construction comprises tower body, swing arm and base etc.Operating mechanism hoists, luffing, revolution and walking four parts.Electric system comprises electrical motor, controller, electric power distribution cabinet, connection line, signal and illumination equipment etc.Along with a large amount of uses of construction trade tower crane in recent years, because transfinite the in violation of rules and regulations all kinds of tower crane safe in operation accidents of the initiation such as operation and tower crane group interference and collision of tower crane frequently occur, cause huge life and property loss.The experience and lessons of safety misadventure show, must carry out in time danger factor and the potential safety hazard in the practical control convenience operational process of actv. supervision ability to tower crane use procedure and behavior, and prevention and the industrial accident of minimizing safety of tower crane occur.
At present, most of traditional tower crane safety precautions have only accomplished that three is spacing, that is: amplitude, weight, moment are spacing, and what mostly adopt is traditional mechanical stroke spacer, this can not meet the function of escorting for tower machine safe in operation in the situation that working condition is severe far away, and, traditional mechanical type limiting device can not be combined with at present very advanced micro controller system, the target that this far can not reach the desired tower crane in GB/T5031-2008 need be furnished with the monitored control system that can monitor in real time tower machine mode of operation.Although, also there is in the market multiple tower crane safety monitoring microprocessor system, but most systems has just realized the Real-time Collection of tower machine working data to be shown, do not realize the storage of working data or only can realize the storage of a small amount of working data in a short time, especially on remote monitoring platform is built, because be subject to the restriction of work condition environment, only realize in-plant data transmission, and can not form monitor network.
Utility model content
The utility model is the weak point existing in above-mentioned prior art for avoiding, provide a kind of black box security monitoring circuit of tower crane, with the concentrated remote monitor and control of the running state to tower crane, safety in operation and the reliability of raising tower crane.
The utility model be technical solution problem by the following technical solutions.
The black box security monitoring circuit of tower crane, its constructional feature is to comprise sensor group, sample circuit, governor circuit, display circuit, warning circuit, relay drive circuit and GPRS wireless communication module; Each sensor in described sensor group is connected with described sample circuit, and described sample circuit is all connected with described governor circuit with display circuit; Described warning circuit is all connected with described governor circuit with GPRS wireless communication module; Described sensor group comprises LOAD CELLS, rotary sensor, luffing sensor, height sensor, air velocity transducer, voltage sensor, current sensor and temperature sensor.
The constructional feature of the black box security monitoring circuit of tower crane of the present utility model is also:
Described display circuit comprises LCD display.
Described sample circuit comprises voltage sampling circuit and current sampling circuit;
As shown in Figure 3, described voltage sampling circuit comprises resistance R 1～R3, capacitor C 1～C3, op amp U3, diode D1 and diode D2; Described voltage sensor is connected with a terminal of described op amp U3, after being connected in series with R3, described resistance R 2, R1 be connected with another terminal of described op amp U3 by resistance R 2, described resistance R 1 is rheochord, described resistance R 3 ground connection; Common point after described diode D1 is connected in series with diode D2 is connected with described resistance R 1, and the common point after described diode D1 is connected in series with diode D2 is also connected with governor circuit; Described capacitor C 1～C3 is all connected with described op amp U3;
As shown in Figure 4, described current sampling circuit comprises resistance R 4～R8, capacitor C 4～C6, op amp U4, diode D3 and diode D4; Described current sensor is connected with a terminal of described op amp U4, after being connected in series with R6, described resistance R 4, R5 be connected with another terminal of described op amp U4 by resistance R 4, described resistance R 5 is rheochord, described resistance R 6 ground connection; Common point after described diode D3 is connected in series with diode D4 is connected with described resistance R 5, and the common point after described diode D3 is connected in series with diode D4 is also connected with governor circuit; Described capacitor C 4～C6 is all connected with described op amp U4.
Described warning circuit comprises audible alarm circuit and LED illuminating circuit;
As shown in Figure 5, described audible alarm circuit comprises resistance R 9～R11, aerotron Q1 and buzzer phone U5; The base stage of described aerotron Q1 is connected with described governor circuit by described resistance R 9, and the two ends of described resistance R 10 are connected in the base stage and emitter of described aerotron Q1; The collecting electrode of described aerotron Q1 is connected with a terminal of described buzzer phone U5, and another terminal of described buzzer phone U5 connects power supply VCC by resistance R 11;
As shown in Figure 6, described LED illuminating circuit comprises resistance R 12～R13, aerotron Q2 and LED 1; The base stage of described aerotron Q2 is connected with described governor circuit by described resistance R 13, the grounded emitter of described aerotron Q2, and the collecting electrode of described aerotron Q2 is connected power supply VCC by LED 1 with resistance R 12 successively.
Described GPRS radio communication circuit comprises GSM/GPRS chip U6, SIM chip U7, resistance R 15～R27, capacitor C 7～C9, aerotron Q3～Q4 and LED _ SIM.
Described relay drive circuit comprises transistor output photoelectric coupler U8, resistance R 28～R32, darlington transistor array U9, diode D5, relay K 1 and the coupling end P5 being connected with described governor circuit; Described coupling end P5 is connected with described darlington transistor array U9 by transistor output photoelectric coupler U8, and described darlington transistor array U9 is connected with described relay K 1, drives described relay K 1 by described darlington transistor array U9.
The black box security monitoring circuit of described tower crane also comprises USB interface.
The black box security monitoring circuit of described tower crane also comprises input block, and described input block is keyboard or action button.
Described temperature sensor is digital temperature sensor DS18B20.
Compared with the prior art, the utility model beneficial effect is embodied in:
The black box security monitoring circuit of tower crane of the present utility model, five spacing monitoring are realized, five is spacing: amplitude, weight, moment, highly, revolution, and report to the police with wind speed, machine operation temperature survey and electric moter voltage, the tower crane safety monitoring black box of the measurement function of electric current, this system can realize according to user's specific requirement long-term a large amount of storages of data, storage life can be for 2 years, by GSM global system for mobile communications network, the wireless IP that has realized wide area connects, facilitate the remote supervisory of tower machine safety manufacture supervising personnel to tower machine.
1) system is selected arm processor at a high speed, has realized Real-time Collection, demonstration, storage and the transmission of tower machine working data;
2) select the range limiter of output electrical signals to replace traditional mechanical stroke spacer, realized the signal transmission between microprocessor;
3) system also provides wind speed warning function, and in the time that the wind speed in work condition environment reaches early warning value, black box supervisory circuit can send sound, light, SMS alarm, and sends signal to relay, cuts off the power supply of motor, realizes the protection to tower machine;
4) select electric current, the voltage transformer of hall principle to realize the real-time monitoring to the dynamo-electric machine starting current of tower and operating voltage, when these two working parameter any one occur when abnormal, this system can be sent sound, light, SMS alarm, simultaneously, send actuating signal to relay, cut off tower electromechanical source, realize overcurrent, overvoltage and under-voltage protection to tower machine;
5) application GPRS wireless, packet-switched technology, the wireless IP that has realized wide area connects, and this wireless network coverage is large, data transmission rate is high and safety is also higher, and user is can be always online and charge by flow, and has reduced cost;
6) the data receiver program of supervision and management center can arrive data bank by the data transmission receiving automatically, and operating personal can be seen clearly the working data of the tower machine coming through GPRS transmission in the time of login security control webpage; Really realize remote supervisory.
The black box security monitoring circuit of tower crane of the present utility model, has the remote centralized control of the running state that can realize tower crane, the advantage such as safety in operation and reliability of raising tower crane.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the black box security monitoring circuit of tower crane of the present utility model.
Fig. 2 is the display circuit figure of the black box security monitoring circuit of tower crane of the present utility model.
Fig. 3 is the voltage sampling circuit figure of the black box security monitoring circuit of tower crane of the present utility model.
Fig. 4 is the current sampling circuit figure of the black box security monitoring circuit of tower crane of the present utility model.
Fig. 5 is the audible alarm circuit diagram of the black box security monitoring circuit of tower crane of the present utility model.
Fig. 6 is the LED illuminating circuit figure of the black box security monitoring circuit of tower crane of the present utility model.
Fig. 7 is the GPRS radio communication circuit figure of the black box security monitoring circuit of tower crane of the present utility model.
Fig. 8 is the relay drive circuit figure of the black box security monitoring circuit of tower crane of the present utility model.
Below pass through the specific embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
The specific embodiment
Referring to accompanying drawing 1～accompanying drawing 8, the black box security monitoring circuit of tower crane, it comprises sensor group, sample circuit, governor circuit, display circuit, warning circuit, relay drive circuit and GPRS wireless communication module; Each sensor in described sensor group is connected with described sample circuit, and described sample circuit is all connected with described governor circuit with display circuit; Described warning circuit is all connected with described governor circuit with GPRS wireless communication module; Described sensor group comprises LOAD CELLS, rotary sensor, luffing sensor, height sensor, air velocity transducer, voltage sensor, current sensor and temperature sensor.
As Fig. 1, the sensor group being made up of LOAD CELLS, rotary sensor, luffing sensor, height sensor, air velocity transducer, voltage sensor, current sensor and temperature sensor etc. gathers the operational factor of the various device of tower crane, and after being processed by sample circuit, operational factor gives governor circuit, obtain every operational factor and process by governor circuit, then in the demonstration screen display of display circuit; Once operational factor exceedes the scope of preset value and needs to report to the police, self-diagnostic circuit sends alerting signal to warning circuit, reports to the police by warning circuit; Governor circuit is also transferred to operational factor by GPRS wireless communication module the upper computer of monitoring and control centre, thereby the supervisory circuit platform by far-end is realized the control and management to a tower group of planes, set up the tower machine group control system that is not subject to region and distance limit, realize unified monitoring and management to the tower group of planes in work area on a large scale, improve job security and the reliability of tower machine.
Governor circuit is made up of central process unit STM32 and peripheral circuit thereof.STM32 series is based on aiming at the custom-designed ARM Cortex-M3 of the Embedded Application kernel that requires High Performance, low cost, low-power consumption.Be divided into two different series: STM32F103 " enhancement mode " series and STM32F101 " basical traditional model " series by performance.Enhancement mode series clock frequency reaches 72MHz, is the highest product of like product performance; Basical traditional model clock frequency is 36MHz, obtains the performance that significantly promotes than 16 products with the price of 16 products, is the optimal selection of 16 product users.All built-in 32K is to the flash memory of 128K for two series, and different is the combination of maximum capacity and the Peripheral Interface of SRAM.When clock frequency 72MHz, from flash memory run time version, STM32 power consumption 36mA, is product least in power-consuming on 32 markets, is equivalent to 0.5mA/MHz.
Described display circuit comprises LCD display.
Display section selects 7 cun of TFTLCD as telltale, and drive scheme adopts FPGA+SDRAM, and the core take FPGA as system realizes the driving algorithm of LCD from hardware.By with the communicating by letter of central process unit, send instruction and displaying contents and complete the procedure for displaying of Liquid Crystal Display to this driver module by central process unit.
Figure 2 shows that the interface circuit of LCD and central process unit.LCD_D0 to the LCD_D15 pin of driver module is as data line.LCD_RE and LCD_WE are reading enable signal line and writing enable signal line, Low level effective of LCD.CE is the chip selection signal of controller, represents that this controller is chosen in the time that CE is dragged down.A0 is the address signal of controller, represents the selection of data-signal and control signal.RST pin is the reset signal of driver module.Be connected with the I/O mouth of 5 control lines and the treater electric power system of fluid,matching crystal display of above 16 data lines completes the Presentation Function of native system.
Described sample circuit comprises voltage sampling circuit and current sampling circuit;
As shown in Figure 3, described voltage sampling circuit comprises resistance R 1～R3, capacitor C 1～C3, op amp U3, diode D1 and diode D2; Described voltage sensor is connected with a terminal of described op amp U3, after being connected in series with R3, described resistance R 2, R1 be connected with another terminal of described op amp U3 by resistance R 2, described resistance R 1 is rheochord, described resistance R 3 ground connection; Common point after described diode D1 is connected in series with diode D2 is connected with described resistance R 1, and the common point after described diode D1 is connected in series with diode D2 is also connected with governor circuit; Described capacitor C 1～C3 is all connected with described op amp U3;
As shown in Figure 4, described current sampling circuit comprises resistance R 4～R8, capacitor C 4～C6, op amp U4, diode D3 and diode D4; Described current sensor is connected with a terminal of described op amp U4, after being connected in series with R6, described resistance R 4, R5 be connected with another terminal of described op amp U4 by resistance R 4, described resistance R 5 is rheochord, described resistance R 6 ground connection; Common point after described diode D3 is connected in series with diode D4 is connected with described resistance R 5, and the common point after described diode D3 is connected in series with diode D4 is also connected with governor circuit; Described capacitor C 4～C6 is all connected with described op amp U4.
As shown in Figure 3, the voltage signal of voltage sensor output is through by op amp U3(OP27) emitter follower that forms inputs to governor circuit, the A/D converting unit that the voltage signal that voltage sampling circuit obtains by impedance transformation is input to governor circuit after electric resistance partial pressure, realizes the collection of voltage sensor signals.Described capacitor C 1～C3 is connected on one of them pin of described op amp U3.
As shown in Figure 4, first 4～20mA current signal of current sensor output is converted to voltage signal, pass through again by op amp U4(OP27) form emitter follower realize impedance transformation, the voltage signal obtaining is input to A/D converting unit after electric resistance partial pressure, realizes the collection of current sensor signal.Described capacitor C 4～C6 is connected on one of them pin of described op amp U4.After being connected in series with R8, described resistance R 7 is connected on the pin that described op amp U4 is connected with current sensor.
Described warning circuit comprises audible alarm circuit and LED illuminating circuit;
As shown in Figure 5, described audible alarm circuit comprises resistance R 9～R11, aerotron Q1 and buzzer phone U5; The base stage of described aerotron Q1 is connected with described governor circuit by described resistance R 9, and the two ends of described resistance R 10 are connected in the base stage and emitter of described aerotron Q1; The collecting electrode of described aerotron Q1 is connected with a terminal of described buzzer phone U5, and another terminal of described buzzer phone U5 connects power supply VCC by resistance R 11;
As shown in Figure 6, described LED illuminating circuit comprises resistance R 12～R13, aerotron Q2 and LED 1; The base stage of described aerotron Q2 is connected with described governor circuit by described resistance R 13, the grounded emitter of described aerotron Q2, and the collecting electrode of described aerotron Q2 is connected power supply VCC by LED 1 with resistance R 12 successively.
As shown in Figure 5, the buzzer phone control signal that governor circuit sends is inputted the base stage of Q1, controls the base stage of aerotron Q1 by resistance R 11, Q1 conducting in the time that buzzer phone control signal is high level, and buzzer phone BUZZER has electric current by starting warning work.R11 is current-limiting resistance, and the electric current of the Q1 that prevents from flowing through exceedes the rated current of buzzer phone.R10 is bleeder resistor, and in the time of external electromagnetic waves interfered circuit, R10 directly introduces DGND by the electric current of interfering signal and prevents buzzer phone false triggering.
In Fig. 6, the base stage of the LED control signal input Q2 that governor circuit sends, by the base stage of base resistance R13 control aerotron Q2, in the time that LED control signal is high level, aerotron On current flows through LED lamp, LED lamp is shinny, when control signal when being low level LED lamp extinguish.R12 is current-limiting resistance, and the electric current of the Q2 that prevents from flowing through exceedes the rated current of LED1.
Described GPRS radio communication circuit comprises GSM/GPRS chip U6, SIM chip U7, resistance R 15～R27, capacitor C 7～C9, aerotron Q3～Q4 and LED _ SIM.
As shown in Figure 7, the start of SIM908 module is controlled by the PWRKEY pin being directly connected with main control chip I/O mouth, and in the time that PWRKEY pin is dragged down duration and is greater than 1s by level, module realizes starts shooting.Module is set up serial communication through the UART interface and the master control board that carry, and main control part thinks that by serial ports SIM908 module transmission AT instruction realizes network registry, Configuration of baud rate and the remote data transfer function of module.
Power on after start in SIM908 module, the NETLIGHT pin of module self can be exported the height conversion level of certain frequency, and now LED_SIM indicator lamp can be with the mode of operation of certain frequency flicker indication SIM908 module.
SIM908 is four frequency GSM/GPRS modules of a integrated GPS navigation technology.Compact module size is also incorporated into GPRS and GPS in SMT encapsulation, realizes the application of embedded GPS significantly saved development time and expense for client.
Described relay drive circuit comprises transistor output photoelectric coupler U8, resistance R 28～R32, darlington transistor array U9, diode D5, relay K 1 and the coupling end P5 being connected with described governor circuit; Described coupling end P5 is connected with described darlington transistor array U9 by transistor output photoelectric coupler U8, and described darlington transistor array U9 is connected with described relay K 1, drives described relay K 1 by described darlington transistor array U9.
For the further safety of raising system, if system is sent light, sound dangerous play is afterwards proceeded, system control relay cuts off motor power supply in the hole, forces motor out of service, to guarantee the safe operation of tower machine.Whole protection process is by the folding of central process unit STM32 chip controls relay, and then the control of realization to electric machine operation state.As shown in Figure 8, the IO mouth of STM32 chip is not participated in the control of relay directly, but controls transistor output photoelectric coupler U8(TLP521), optocoupler drives darlington transistor array U9(ULN2003) and then the folding of control relay contact.
As optocoupler TLP521 in Fig. 8 circuit plays buffer action, relay and STM32 are kept apart, fundamentally get rid of the electromagnetic interference that relay on-off moment produces.ULN2003 is high pressure darlington transistor array, has the features such as current gain is large, operating range is large, carrying load ability is strong, and the inner open collector that adopts is exported, and can bear the voltage of 50V and the electric current of 600mA, can directly drive the relay of 24V.When to optocoupler TLP521 input high level control signal, the mouth of ULN2003 becomes low level, the energising of Fig. 8 repeat circuit, relay switch closure.During due to relay K 1 folding, its internal electromagnetic coil can produce larger electromagnetic wave and form stronger electromagnetic interference, and in Fig. 8 repeat circuit, a diode D5 in parallel is flywheel diode, further reduces the folding of relay to the interference of system.
The black box security monitoring circuit of described tower crane also comprises USB interface.
By USB interface, governor circuit can connect USB device, will make related data of the present utility model to import and export, can and other equipment between swap data easily.
The black box security monitoring circuit of described tower crane also comprises input block, and described input block is keyboard or action button.
Described temperature sensor is digital temperature sensor DS18B20.
Adopt digital temperature sensor DS18B20, sensors with auxiliary electrode were is digital transducer, and only needs a data line to carry out data transmission, be easy to be connected with micro controller system, can remove A/D module, reduce hardware cost, simplify circuit system, measure temperature accuracy high.
SIM908 chip and governor circuit are by serial communication, and SIM908 chip is connected with SIM simultaneously, and GPRS mobile data communication service is provided, and GPRS and server connect and follow Transmission Control Protocol.The supervision and management center of far-end arranges upper computer, after tower machine monitoring circuit and upper computer are set up and communicate by letter, receives the data of GPRS module transmission, upper computer can be automatically by data upload to website, realize reception and the processing of long range data.
Fig. 7 represents the circuit connection diagram of the SIM908 chip of the Lyceum company with Transmission Control Protocol, this chip power power supply is DC4.2V, chip is communicated by letter with CPU by serial ports simultaneously, speed is very high, what periphery was indispensable has SIM, and GPRS mobile data communication business can be provided, and SIM908 chip only needs several seconds time from being initialised to successfully connection server, conveniently connect, thereby realize the transmission tower machine working data of fast and reliable.
The black box security monitoring circuit of tower crane of the present utility model, five spacing and band tower Electrical Control system power, temperature and voltage monitorings, there are in violation of rules and regulations operation sound, light, SMS alarm function, store working data at any time, there is the tower crane black box of Distant supervision and control, can be widely used in tower crane in the market.
Black box supervisory circuit can be realized the compatibility of mechanical signal and electric signal well, better ensures the trouble free service of tower machine;
Adopt GPRS technology to realize wireless packet data switching technology, realized the remote monitoring and administration of security control personnel to tower machine;
In the situation that occurring that violation operation or work condition environment are comparatively severe, system can be sent sound, light is reported to the police, and meanwhile, the read-out of system can highlight alarm content, with this alarm tower machine operation personnel;
In the situation that operating against regulations or work condition environment is more severe, black box supervisory circuit can send SMS alarm to tower machine safety manufacture supervising personnel in time, and the alarm content of concrete tower machine is described, is convenient to security control personnel's judgement;
When system is sent sound, light, SMS alarm, system can be sent actuating signal to the corresponding relay of alarm content, cuts off in time corresponding motor power supply, realizes safety guard-safeguard.
Native system gathers corresponding data by 8 kinds of function sensors that are arranged on different parts, (that is: LOAD CELLS is arranged on the bearing pin of tower machine steel rope head pulley, rotary sensor is arranged on the lead limit switch of synchronizeing with pivoting support, luffing installation of sensors is on the formation limit switch of synchronizeing with luffing cylinder, height sensor is arranged on the formation limit switch switch of the cylinder that hoists, voltage sensor and current sensor are mounted on the major loop and control loop of each operation motor, temperature sensor one be fixed on detect installation of in-cabinet temperature in electrical control cubicles and main motor internal detects its running temperature) main control part is arm processor, the collection of tower machine working data has been worked in coordination with by left side 9 road sensors (temperature is two-way) and sample circuit, sampling data are after treatment presented on LCD in real time, the storage of data and transmission are completed by USB flash disk and GPRS, user can pass through the setting of keyboard completion system time and the inquiry of historical working data.In the time there is strange phenomena, governor circuit can send signal to respectively warning device and GSM, realizes sound and light alarm and SMS alarm.By driving circuit control No. 12 relays, stop tower machine to continue dangerous play, protection tower machine simultaneously.
System can real-time sampling, show the currency of 10 road Contents for Monitorings, and working data is write to USB flash disk, meanwhile, data is sent to telemanagement center via GPRS.
Tower machine operation personnel lifting in violation of rules and regulations; system detects lifting signal in violation of rules and regulations; triggering sound, light, SMS alarm; simultaneously; send corresponding actions signal to relay, cut off the function of luffing forward of lifting motor rising and luffing mechanism, protection tower machine; data can write USB flash disk in violation of rules and regulations simultaneously, and are sent to telesecurity monitor supervision platform.
This black box supervisory circuit is in possessing tower machine safety five limit functions, and can detect in real time extraneous wind speed, motor temperature, electric motor starting voltage, starting current, when strange phenomena appears in tower Electrical Control system, system can be sent sound, light, SMS alarm automatically, and can control corresponding relay contact action, meanwhile, working data is write to USB flash disk and is sent to Distant supervision and control center through GPRS, realize the safety precaution to tower machine.
The black box security monitoring circuit of tower crane of the present utility model, have amplitude, weight, moment, highly, revolution five limit functions, and with the self-monitoring function of wind speed warning, machine operation temperature survey and electric moter voltage, electric current, can complete voluntarily the monitoring of tower machine mode of operation, complete corresponding function according to monitoring result.
In the time that strange phenomena appears in tower Electrical Control system, system can be sent sound, light, SMS alarm, and trigger action relay actuating signal, cuts off motor power, realizes the security monitoring to tower machine.System can be preserved tower machine working data for a long time, and can be by working data by uploading in real time Distant supervision and control center.
Claims (9)
1. the black box security monitoring circuit of tower crane, is characterized in that, comprises sensor group, sample circuit, governor circuit, display circuit, warning circuit, relay drive circuit and GPRS wireless communication module; Each sensor in described sensor group is connected with described sample circuit, and described sample circuit is all connected with described governor circuit with display circuit; Described warning circuit is all connected with described governor circuit with GPRS wireless communication module; Described sensor group comprises LOAD CELLS, rotary sensor, luffing sensor, height sensor, air velocity transducer, voltage sensor, current sensor and temperature sensor;
Described governor circuit comprises central process unit STM32.
2. the black box security monitoring circuit of tower crane according to claim 1, is characterized in that, described display circuit comprises LCD display.
3. the black box security monitoring circuit of tower crane according to claim 1, is characterized in that, described sample circuit comprises voltage sampling circuit and current sampling circuit;
Described voltage sampling circuit comprises resistance R 1～R3, capacitor C 1～C3, op amp U3, diode D1 and diode D2; Described voltage sensor is connected with a terminal of described op amp U3, after being connected in series with R3, described resistance R 2, R1 be connected with another terminal of described op amp U3 by resistance R 2, described resistance R 1 is rheochord, described resistance R 3 ground connection; Common point after described diode D1 is connected in series with diode D2 is connected with described resistance R 1, and the common point after described diode D1 is connected in series with diode D2 is also connected with governor circuit; Described capacitor C 1～C3 is all connected with described op amp U3;
Described current sampling circuit comprises resistance R 4～R8, capacitor C 4～C6, op amp U4, diode D3 and diode D4; Described current sensor is connected with a terminal of described op amp U4, after being connected in series with R6, described resistance R 4, R5 be connected with another terminal of described op amp U4 by resistance R 4, described resistance R 5 is rheochord, described resistance R 6 ground connection; Common point after described diode D3 is connected in series with diode D4 is connected with described resistance R 5, and the common point after described diode D3 is connected in series with diode D4 is also connected with governor circuit; Described capacitor C 4～C6 is all connected with described op amp U4.
4. the black box security monitoring circuit of tower crane according to claim 1, is characterized in that, described warning circuit comprises audible alarm circuit and LED illuminating circuit;
Described audible alarm circuit comprises resistance R 9～R11, aerotron Q1 and buzzer phone U5; The base stage of described aerotron Q1 is connected with described governor circuit by described resistance R 9, and the two ends of described resistance R 10 are connected in the base stage and emitter of described aerotron Q1; The collecting electrode of described aerotron Q1 is connected with a terminal of described buzzer phone U5, and another terminal of described buzzer phone U5 connects power supply VCC by resistance R 11;
Described LED illuminating circuit comprises resistance R 12～R13, aerotron Q2 and LED 1; The base stage of described aerotron Q2 is connected with described governor circuit by described resistance R 13, the grounded emitter of described aerotron Q2, and the collecting electrode of described aerotron Q2 is connected power supply VCC by LED 1 with resistance R 12 successively.
5. the black box security monitoring circuit of tower crane according to claim 1, it is characterized in that, described GPRS radio communication circuit comprises GSM/GPRS chip U6, SIM chip U7, resistance R 15～R27, capacitor C 7～C9, aerotron Q3～Q4 and LED _ SIM.
6. the black box security monitoring circuit of tower crane according to claim 1, it is characterized in that, described relay drive circuit comprises transistor output photoelectric coupler U8, resistance R 28～R32, darlington transistor array U9, diode D5, relay K 1 and the coupling end P5 being connected with described governor circuit; Described coupling end P5 is connected with described darlington transistor array U9 by transistor output photoelectric coupler U8, and described darlington transistor array U9 is connected with described relay K 1, drives described relay K 1 by described darlington transistor array U9.
7. the black box security monitoring circuit of tower crane according to claim 1, is characterized in that, also comprises USB interface.
8. the black box security monitoring circuit of tower crane according to claim 1, is characterized in that, also comprises input block, and described input block is keyboard or action button.
9. the black box security monitoring circuit of tower crane according to claim 1, is characterized in that, described temperature sensor is digital temperature sensor DS18B20.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320686540.0U CN203682947U (en) | 2013-11-01 | 2013-11-01 | Black box safety monitoring circuit of tower type crane |
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| CN201320686540.0U CN203682947U (en) | 2013-11-01 | 2013-11-01 | Black box safety monitoring circuit of tower type crane |
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| CN201320686540.0U Expired - Fee Related CN203682947U (en) | 2013-11-01 | 2013-11-01 | Black box safety monitoring circuit of tower type crane |
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| CN (1) | CN203682947U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645211A (en) * | 2016-04-13 | 2016-06-08 | 尼森科技（湖北）有限公司 | Initiative elevator self-inspection device and initiative elevator self-inspection system |
| CN108249311A (en) * | 2018-01-23 | 2018-07-06 | 宜昌市微特电子设备有限责任公司 | Crane anti-strong wind intelligence control system and control method |
-
2013
- 2013-11-01 CN CN201320686540.0U patent/CN203682947U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645211A (en) * | 2016-04-13 | 2016-06-08 | 尼森科技（湖北）有限公司 | Initiative elevator self-inspection device and initiative elevator self-inspection system |
| CN108249311A (en) * | 2018-01-23 | 2018-07-06 | 宜昌市微特电子设备有限责任公司 | Crane anti-strong wind intelligence control system and control method |
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