CN103863783B - Based on the belt conveyer monitoring system of ZigBee radio sensing network - Google Patents
Based on the belt conveyer monitoring system of ZigBee radio sensing network Download PDFInfo
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- CN103863783B CN103863783B CN201410111039.0A CN201410111039A CN103863783B CN 103863783 B CN103863783 B CN 103863783B CN 201410111039 A CN201410111039 A CN 201410111039A CN 103863783 B CN103863783 B CN 103863783B
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Abstract
The invention provides a kind of described belt conveyer monitoring system based on ZigBee radio sensing network, comprise terminal node, router and combinator, combinator is connected with upper computer by ethernet, and described terminal node and router comprise: belt deflection monitoring node, load-transfer device velocity measurement node, load-transfer device temperature survey node, load-transfer device smog measured node and conveyer windrow monitoring node; Each terminal node and router all by the core processor of sensor and ZigBee module on one chip integrated; The sensor of belt deflection monitoring node adopts correlation photoelectric switch; Load-transfer device velocity measurement node adopts incremental optical-electricity encoder; Load-transfer device temperature survey node adopts infrared temperature sensor, and load-transfer device smog measured node adopts Smoke Sensor, and conveyer windrow monitoring node adopts laser distance sensor.The present invention adopts the energy collecting of wireless ZigBee data acquisition to carry out the collection of data more easily, can easily change collection position.
Description
Technical field
The invention belongs to wireless sense network field, specifically a kind of radio sensing network monitoring system can measuring the multiple running environment parameter of belt conveyer.
Background technology
Along with the raising of production technology, conveyer is widely used in the mass transport of mine, harbour, metallurgy, building materials, machinery and warehousing industry.Just need to monitor the situation of conveyer own, to reach the object reducing damage to person and enhance productivity in conveyer runs.Therefore, the load-transfer device data acquisition system that design is not only reliable but also practical is very important.In traditional data acquisition system, between node, adopt wired mode to connect, there is the problem that cable wiring manufacture amount is large, long in time limit, cost is high, power consumption is high, portability is poor.Random placement based on ZigBee wireless sensor network, the wireless transmission method of automatic network-building can address these problems well.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of belt conveyer monitoring system based on ZigBee radio sensing network is provided, for monitoring the running environment parameter of belt conveyer, so that the operation conditions of operating personal to belt conveyer manages.
According to technical scheme provided by the invention, the described belt conveyer monitoring system based on ZigBee radio sensing network comprises: terminal node, router and combinator, combinator is connected with upper computer by ethernet, terminal node and router form wireless network by Ad hoc mode, send the data collected to combinator by multi-hop relay mode; Wherein, described terminal node and router comprise: belt deflection monitoring node, load-transfer device velocity measurement node, load-transfer device temperature survey node, load-transfer device smog measured node and conveyer windrow monitoring node; Each terminal node and router all by the core processor of sensor and ZigBee module on one chip integrated; The sensor of described belt deflection monitoring node adopts correlation photoelectric switch, receiving end and the ZigBee module of described correlation photoelectric switch are on one chip integrated, be installed on the upside of load-transfer device, the transmitting terminal of correlation photoelectric switch is installed on the downside of load-transfer device, and the line of a pair correlation photoelectric switch is positioned in the sideslip boundary of load-transfer device; The sensor of described load-transfer device velocity measurement node adopts incremental optical-electricity encoder, and load-transfer device velocity measurement node installation is on head roll and tail bend pulley; The sensor of described load-transfer device temperature survey node adopts infrared temperature sensor, and the sensor of load-transfer device smog measured node adopts Smoke Sensor, and the sensor of conveyer windrow monitoring node adopts laser distance sensor.
System detects the linear velocity of head roll and the linear velocity of tail bend pulley in real time by described load-transfer device velocity measurement node, and compares both.If both velocity magnitude are equal, then conveyer normal operation is described; If the linear velocity of head roll is greater than the linear velocity of tail bend pulley, then illustrates in conveyer transportation to exist and skid.
Described load-transfer device temperature survey node and load-transfer device smog measured node are arranged in load-transfer device frame, and the distance every 50 ~ 80m installs a temperature survey node.
Described conveyer windrow monitoring node to be arranged on directly over the feed bin of conveyer, charge door and respectively higher than the maximum height allowing solid accumulation.
Described terminal node and router judge monitoring data, just send data when the variable quantity of monitoring data exceedes setting threshold or monitoring data exceedes the range of normal value of setting.
Advantage of the present invention is as follows:
1. the wireless communication technology of short range, low cost, low-power consumption is have employed based on the belt conveyor monitoring system of ZigBee.Solve the problem that cable wiring manufacture amount is large, long in time limit, cost is high, power consumption is high, portability is poor.
2. combinator is communicated with upper computer by ethernet, is applicable to the network topology in belt conveyer workshop, and the data traffic of ethernet is greater than the data traffic of RS232 serial ports, is conducive to the data communication of high amount of traffic.
3. this belt conveyor monitoring system is for belt conveyer common 5 kinds of faults (belt deflection, skidding, fire, smog fault, windrow accident) when transporting, to belt deflection, speed, temperature, smog, windrow totally 5 kinds of signals carry out Real-Time Monitoring, ensure the safety in production of belt conveyer.
4. in addition, consider reduction power consumption, data can be added send and judge in node operator, namely when data variation is small can ignore time, just do not send data; Otherwise, send data.Thus be conducive to the energy consumption reducing microprocessor, extend its cycle of operations.
Accompanying drawing explanation
Fig. 1 is networking structure figure of the present invention.
Fig. 2 is ZigBee wireless control module circuit diagram in node of the present invention.
Fig. 3 is belt deflection monitoring node circuit diagram.
The arrangement plan of Fig. 4 belt deflection monitoring node.
Fig. 5 is load-transfer device velocity measurement node circuit figure.
Fig. 6 is load-transfer device velocity measurement inserting knot figure.
Fig. 7 is load-transfer device temperature survey node circuit figure.
Fig. 8 is smog measured node circuit diagram.
Fig. 9 is windrow monitoring node circuit diagram.
Figure 10 is windrow measured node arrangement plan.
Detailed description of the invention
Come to be described further with embodiment below in conjunction with accompanying drawing.
The present invention is based on the features such as ZigBee wireless sensor network cost is low, power consumption is little, flexible arrangement is convenient, devise a kind of belt conveyer monitoring system based on ZigBee, wireless sensor node in this system has MANET and wireless routing function, contact inserting knot freely can be carried out to the whole environmental area of monitoring that needs, and can Real-time Collection, uploading data; Collection network is connected with upper computer by ethernet by this system, realizes the real-time monitoring of belt conveyer.
As Fig. 1, having three kinds of nodes in ZigBee-network, is terminal node, router and combinator respectively.Terminal node is the leaf node in network topology structure, only communication mutual to its father node; Router is the network equipment that can provide route service, can realize the forwarding of network packet, and routing device also can serve as terminal node and use; The radical function of combinator sets up network, and the data packet that reception the first two node sends, and upper computer is connected to combinator and shows monitoring data.Cheap micro terminal node and the router of some is disposed in monitored area, wireless network is formed by Ad hoc mode, the data collected are sent to combinator by multi-hop relay mode, combinator is connected with upper computer by ethernet, on upper computer, finally realize the Dynamic Announce of monitoring data.
Wherein, terminal node and router adopt SOC model, namely core processor and ZigBee module on one chip integrated.Like this, only need to use chip piece just can data acquisition, process network protocol stack and radio transmission-receiving function, greatly reduce cost and power consumption.
As Fig. 2, sensor node is identical with the ZigBee module circuit of combinator.Electricity routing module EMZ3018, crystal oscillating circuit, LED circuit, key circuit (wherein, RST forces device reset button, and S1 is that equipment adds net keys), JTAG debugging interface composition.Wherein, ADC1 and ADC2 is analogue to digital conversion interface, RXD and TXD is serial communication transmission and reception ports, and PA0, PA1 and PB0 are sensing data input I/O mouths.
As Fig. 3, it is E3F-DS5C1 correlation photoelectric switch that the sensor of belt deflection monitoring node hardware circuit selects profile to number, and when object to be detected blocks light between projector and receptor, photoelectric switch can produce on-off signal, otherwise, do not produce on-off signal.This circuit adopts 12V vdc as the operating voltage of photoelectric switch.And adopt PC817 photoelectrical coupler that front end sensors input circuit and output circuit are isolated, reduce circuit interference, and make the high level being input to micro controller system PB mouth pin be 3.3V.
As Fig. 4, load-transfer device 1 is positioned on the carrying roller 3 in load-transfer device frame 2, in order to anti-deviation in advance, can install belt deflection monitoring node in the distance long every 40-80m.Receiving end and the ZigBee module of correlation photoelectric switch are on one chip integrated, are installed on the upside of load-transfer device 1, and the transmitting terminal of correlation photoelectric switch is installed on the downside of load-transfer device 1.E3F-DS5C1 correlation photoelectric switch 5 is arranged on sensor stand 4, each sensor stand 4 has a pair photoelectric switch 5, across load-transfer device 1 in the middle of this pair photoelectric switch 5.The distance of the 5%-10% of the position that photoelectric switch 5 is installed and load-transfer device 1 edge difference load-transfer device width.
The sensor of load-transfer device velocity measurement node adopts German PEPPERL FUCHS RV158 type incremental optical-electricity encoder, and the pulse produced when utilizing photoelectric encoder to work detects speed.This coder is full compatibility coder.As shown in Figure 5, coder A phase and B phase are connected respectively to PA0 mouth and PA1 mouth after high speed photo coupling 6N135 isolates.
As Fig. 6, load-transfer device velocity measurement node 8 is arranged on head roll 6 and tail bend pulley 7, detects the linear velocity of head roll 6 and the linear velocity of tail bend pulley 7 in real time, and compare both by load-transfer device velocity measurement node 8.If both velocity magnitude are equal, then conveyer normal operation is described; If the linear velocity of head roll is greater than the linear velocity of tail bend pulley, then the skidding that there is certain limit in conveyer transportation is described.One end of load-transfer device 1 is tightening device 9.Load-transfer device carries material 10.
As Fig. 7, load-transfer device temperature survey node circuit adopts KT15.81IIP type infrared temperature sensor.This sensor can export multi-signal, selects the current signal of 4 ~ 20mA here.In ZigBee module, analogue to digital conversion (ADC) module of STM32W108 supports single-ended and Differential Input, uses single-ended conversion here.Due to the precision using input buffer can reduce ADC, so when forbidding input buffer, single-ended input range is 0 to VERF(and 1.2V).So need the voltage signal current signal of 4 ~ 20mA being converted to 0 ~ 1.2V.What in figure, Vo1 exported is exactly 0 ~ 5V voltage signal, then connects an amplifier in chip LM324 and forms voltage follower.Be the voltage signal of 0 ~ 5V for output signal, adopt the electric resistance partial pressure of 19k Ω and 6k Ω, make final output voltage range be 0 ~ 1.2V.
As Fig. 8, the Smoke Sensor module of load-transfer device smog measured node hardware circuit is made up of Smoke Sensor MQ-2 and voltage comparator LM324.The operating voltage of Smoke Sensor MQ-2 is 5V vdc, and the output analog voltage range of Smoke Sensor is 0-5V, so adopt the electric resistance partial pressure of 19k Ω and 6k Ω, makes final output voltage range be 0 ~ 1.2V.Report to the police in time for the ease of monolithic function, the analog voltage AOUT that MQ-2 is exported by LM324 by circuit compares rear output digit signals DOUT with the threshold voltage exported without MQ-2 during fire.When AOUT is greater than threshold voltage, DOUT exports 0, and fire has been described; Otherwise DOUT exports 1, illustrates do not have fire.
Load-transfer device temperature survey node and load-transfer device smog measured node are arranged in load-transfer device frame, can install a temperature survey node every the distance of 50-80m.
As Fig. 9, conveyer windrow monitoring node is applicable to the feed bin of conveyer, the places such as charge door, and design windrow observation circuit, serves protection conveyer and the effect preventing head windrow.The monitoring of this conveyer windrow adopts LDM42 laser distance sensor, adopts laser phase method to measure the distance of object.It is 4 ~ 20mA analog current signal that this sensor exports, because the input range of the ADC module of STM32W108 is 0 ~ 1.2V, so the current signal of 4 ~ 20mA will be converted to the voltage signal of 0 ~ 1.2V.In figure, Vo2 exports is 0 ~ 5V voltage signal, then connects an amplifier in chip LM324 and forms voltage follower.Be the voltage signal of 0 ~ 5V for output signal, adopt the electric resistance partial pressure of 19k Ω and 6k Ω, make final output voltage range be 0 ~ 1.2V.
As Figure 10, conveyer windrow monitoring node 11 is arranged on the maximum height of piling up directly over material stacking place and higher than material 10.
Based on the belt conveyor monitoring system of ZigBee, adopt wireless ZigBee data acquisition can better, carry out the collection of data more easily, can easily collection position be changed.Simultaneously, in native system, all add corresponding algorithm in terminal in ZigBee-network and routing sensor node whether to send with decision data, just send data when the variable quantity of monitoring data exceedes setting threshold or monitoring data exceedes the range of normal value of setting here.Such minimizing sensor node sends data times, reduces energy consumption, can reflect again the operation conditions of belt conveyer more in real time simultaneously.
Claims (4)
1. based on the belt conveyer monitoring system of ZigBee radio sensing network, comprise terminal node, router and combinator, combinator is connected with upper computer by ethernet, terminal node and router form wireless network by Ad hoc mode, the data collected are sent to combinator by multi-hop relay mode, it is characterized in that, described terminal node and router comprise: belt deflection monitoring node, load-transfer device velocity measurement node, load-transfer device temperature survey node, load-transfer device smog measured node and conveyer windrow monitoring node; Each terminal node and router all by the core processor of sensor and ZigBee module on one chip integrated;
The sensor of described belt deflection monitoring node adopts correlation photoelectric switch, receiving end and the ZigBee module of described correlation photoelectric switch are on one chip integrated, be installed on the upside of load-transfer device, the transmitting terminal of correlation photoelectric switch is installed on the downside of load-transfer device, and the line of a pair correlation photoelectric switch is positioned in the sideslip boundary of load-transfer device;
The sensor of described load-transfer device velocity measurement node adopts incremental optical-electricity encoder, and load-transfer device velocity measurement node installation is on head roll and tail bend pulley;
The sensor of described load-transfer device temperature survey node adopts infrared temperature sensor, and the sensor of load-transfer device smog measured node adopts Smoke Sensor, and the sensor of conveyer windrow monitoring node adopts laser distance sensor;
Detect the linear velocity of head roll and the linear velocity of tail bend pulley in real time by described load-transfer device velocity measurement node, and both are compared; If both velocity magnitude are equal, then conveyer normal operation is described; If the linear velocity of head roll is greater than the linear velocity of tail bend pulley, then illustrates in conveyer transportation to exist and skid.
2. as claimed in claim 1 based on the belt conveyer monitoring system of ZigBee radio sensing network, it is characterized in that, described load-transfer device temperature survey node and load-transfer device smog measured node are arranged in load-transfer device frame, and the distance every 50 ~ 80m installs a temperature survey node.
3. as claimed in claim 1 based on the belt conveyer monitoring system of ZigBee radio sensing network, it is characterized in that, described conveyer windrow monitoring node to be arranged on directly over the feed bin of conveyer, charge door and respectively higher than the maximum height allowing solid accumulation.
4. as claimed in claim 1 based on the belt conveyer monitoring system of ZigBee radio sensing network, it is characterized in that, described terminal node and router judge monitoring data, just send data when the variable quantity of monitoring data exceedes setting threshold or monitoring data exceedes the range of normal value of setting.
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| TWI595360B (en) * | 2016-05-18 | 2017-08-11 | 桓達科技股份有限公司 | Conveying apparatus |
| CN108107806A (en) * | 2017-12-05 | 2018-06-01 | 西安弘圣机电科技有限责任公司 | A kind of belt-type conveying equipment intelligent wireless Integrated Protection System |
| CN108534547A (en) * | 2018-05-08 | 2018-09-14 | 广东中鹏热能科技有限公司 | Disconnected stick detection device, disconnected stick automatic monitored control system and roller kilns |
| CN110164116A (en) * | 2019-06-27 | 2019-08-23 | 无锡职业技术学院 | Long-range household security protection device |
| CN111994591A (en) * | 2020-09-22 | 2020-11-27 | 中煤科工集团重庆研究院有限公司 | Deviation early warning emergency stop device and method for conveying belt of belt conveyor |
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