CN201555676U - Detection device for stress of head sheave of hoister - Google Patents
Detection device for stress of head sheave of hoister Download PDFInfo
- Publication number
- CN201555676U CN201555676U CN2009202771431U CN200920277143U CN201555676U CN 201555676 U CN201555676 U CN 201555676U CN 2009202771431 U CN2009202771431 U CN 2009202771431U CN 200920277143 U CN200920277143 U CN 200920277143U CN 201555676 U CN201555676 U CN 201555676U
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- wireless sensor
- stress
- head sheave
- module
- hoister
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Abstract
The utility model relates to a detection device for the stress of a head sheave of a hoister. The detection device comprises a plurality of stress wireless sensor nodes arranged on the head sheave of the hoister, wherein a wireless sensor network coordinator used for receiving the signals of the stress wireless sensor nodes is arranged on a head sheave support of the head sheave of the hoister; and the wireless sensor network coordinator is connected with an industrial personal computer by an RS-232 bus. The stress wireless sensor nodes are started according to the set sampling frequency and send the collected information to the wireless sensor network coordinator, the wireless sensor network coordinator is used for pre-processing the received information of the stress wireless sensor nodes and then sending the data to the industrial personal computer arranged on an operation console by the RS-232 bus, and the industrial personal computer is used for analyzing and processing the received information of the stress wireless sensor nodes, so as to obtain the stress data of the head sheave of the hoister. The detection device has simple structure, strong stability, high reliability, convenient installation and maintenance, low cost and high sensitivity and can be used for the detection in a deep well.
Description
Technical field
The utility model relates to a kind of pick-up unit, particularly a kind of hoister head sheave stress detection device that is applicable to the hoister monitoring running state.
Background technology
At present, the monitoring to the hoister running status can realize by the detection to hoisting cable tension force.The detection method of hoisting cable tension force comprises direct Detection Method and indirect detection method.Direct Detection Method is that the steel wire rope tension detection device is installed on the hoisting conveyance top, and this device is made of sensor, signal acquisition module, wireless transmitter module and accumulator.The steel wire rope tension signal that detects sends by wireless transmitter module, receives laggard line data by the receiver module of well head and handles and obtain steel wire rope tension.The sensor that detects steel wire rope tension mainly contains following three kinds: pulling force sensor is connected between hoisting cable and the hoisting conveyance; Bikini steel wire rope tension sensor; Oil pressure sensor is applicable to the multirope friction winder that hydraulic balance device is arranged between hoisting conveyance and the wire rope.Mainly there are four point defects in this method: the transmission range of radio communication in pit shaft is short, when mine shaft depth surpasses 500 meters, can't realize reliable communication; Accumulator needs periodic replacement, safeguards inconvenience; Sensor installation and maintenance inconvenience; Pulling force sensor sensitivity is low, and tension pick-up can aggravate the fatigue wear of wire rope, and oil pressure sensor only is applicable to the occasion that hydraulic balance device is arranged between hoisting conveyance and the wire rope.Indirect detection method is force cell to be installed detect steel wire rope tension on the bearing base of head sheave.This method requires force cell to have structure applicability, function applicability, long-time stability and high reliability, causes sensor design difficulty, cost very high, and is difficult to install, and also is difficult in time change when sensor damages.
Can find that according to above analysis the detection by hoisting cable tension force at present reflects that mainly there is following defective in the method for hoister running status: sensor is installed inconvenience, and detection system is difficult in maintenance; Detection system is used has certain limitation, can not be applied to deep-well and detect; Battery-driven scheme need regularly replace battery, safeguards inconvenience; Existing sensor exist cost height, sensitivity low, wire rope had problems such as infringement.
Summary of the invention
The purpose of this utility model is to provide a kind of simple in structure, and stability is strong, and the reliability height is easy to maintenance, can be used in that deep-well detects, cost is low, highly sensitive, the harmless hoister head sheave of wire rope is answered power apparatus.
The utility model hoister head sheave stress detection device, comprise a plurality of stress wireless sensor nodes that are located on the hoister head sheave, the sky wheel support of hoister head sheave is provided with the wireless sensor network telegon that receives stress wireless sensor node signal, and the wireless sensor network telegon connects industrial computer through the RS-232 bus.
Described a plurality of stress wireless sensor node is evenly arranged on the wheel rim or spoke of hoister head sheave.
Described stress wireless sensor node comprises strain bridge circuit module, pre-amplifying module, low-pass filtering module, system level chip CC2430, reset circuit, reference circuits, programming and expansion interface, lithium battery, analog power, isolator and radio-frequency power supply, strain bridge circuit sequence of modules connects pre-amplifying module and low-pass filtering module, low-pass filtering module connected system level chip CC2430, system level chip CC2430 is connected with reset circuit respectively, reference circuits and programming and expansion interface, the lithium battery analog power that is linked in sequence, isolator and radio-frequency power supply, analog power connects strain bridge circuit module respectively, pre-amplifying module and low-pass filtering module, radio-frequency power supply connected system level chip CC2430, reset circuit and reference circuits.
Described wireless sensor network telegon comprises system level chip CC2430, outside extended memory, reset circuit, RS-232 expands mouth, programming and expansion interface, AC-DC switch power module and low pressure difference linear voltage regulator MAX16999, system level chip CC2430 is connected with outside extended memory respectively, reset circuit, RS-232 expansion mouth and programming and expansion interface, the AC-DC switch power module output terminal that is connected with alternating current connects low pressure difference linear voltage regulator MAX16999, and the output terminal of low pressure difference linear voltage regulator MAX16999 connects outside extended memory respectively, reset circuit, RS-232 expansion mouth and system level chip CC2430.
Beneficial effect: (1), has realized the stress of hoister head sheave is detected by design stress wireless sensor node and wireless sensor network telegon based on wireless sensor network technology;
(2) pick-up unit with hoister head sheave stress field is located on the head sheave, can not bring any potential safety hazard to elevator system, and is safe and reliable;
(3) based on the stress wireless sensor node and the wireless sensor network telegon of ZigBee protocol development, have very high communication reliability, system responses is quick, and is low in energy consumption;
(4) sensor node has low electric weight measuring ability, can report to the police automatically when the sensor node cell voltage is lower than 2.5V.
(5) method and simple in structure, stability is strong, the reliability height, install, easy to maintenance, cost is low, highly sensitive, can be used in deep-well and detect.
Description of drawings
Fig. 1 is an example structure synoptic diagram of the present utility model;
Fig. 2 is another example structure synoptic diagram of the present utility model;
Fig. 3 is a stress wireless sensor node structure principle chart of the present utility model,
Fig. 4 is a stress wireless sensor node circuit diagram of the present utility model,
Fig. 5 is a wireless sensor network telegon structure principle chart of the present utility model,
Fig. 6 is a wireless sensor network telegon circuit diagram of the present utility model,
Among the figure: 1-head sheave, 2-stress wireless sensor node, 3-days wheel supports, 4-wireless sensor network telegon, 5-RS-232 bus, 6-industrial computer, 7-operator's console.
Embodiment
Embodiment one, shown in Figure 1, hoister head sheave stress detection device mainly is made of 6 stress wireless sensor nodes 2, wireless sensor network telegon 4, RS-232 bus 5, industrial computer 6 and operator's console 7.6 stress wireless sensor nodes 2 evenly are fixed on hoister head sheave 1 and are positioned on the middle wheel rim of adjacent two spokes, are used to obtain the stress information of head sheave.According to on-the-spot actual needs, stress wireless sensor node 2 can increase to 12.Each stress wireless sensor node 2 comprises strain bridge circuit module, pre-amplifying module, low-pass filtering module, system level chip CC2430, reset circuit, reference circuits, programming and expansion interface, lithium battery, analog power, isolator and radio-frequency power supply, strain bridge circuit sequence of modules connects pre-amplifying module and low-pass filtering module, low-pass filtering module connected system level chip CC2430, system level chip CC2430 is connected with reset circuit, reference circuits and programming and expansion interface, the lithium battery analog power that is linked in sequence, isolator and radio-frequency power supply, analog power connects the strain bridge module, pre-amplifying module and low-pass filtering module, radio-frequency power supply connected system level chip CC2430, reset circuit and reference circuits.Wireless sensor network telegon 4 is set supporting on the sky wheel support 3 of hoister head sheave 1, is used for receiving the data that stress wireless sensor node 2 gathers and the state of counter stress wireless sensor node 2 and monitors and control.Wireless sensor network telegon 4 comprises system level chip CC2430, outside extended memory, reset circuit, RS-232 expands mouth, programming and expansion interface, AC-DC switch power module and low pressure difference linear voltage regulator MAX16999, system level chip CC2430 is connected with outside extended memory respectively, reset circuit, RS-232 expansion mouth and programming and expansion interface, the AC-DC switch power module output terminal that is connected with alternating current connects low pressure difference linear voltage regulator MAX16999, and the output terminal of low pressure difference linear voltage regulator MAX16999 connects outside extended memory respectively, reset circuit, RS-232 expansion mouth and system level chip CC2430.Send to industrial computer 6 by RS-232 bus 5 after the data pre-service that wireless sensor network telegon 4 is gathered the stress wireless sensor node that receives 2, industrial computer 6 is handled get a promotion machine head sheave stress and storage with the data that receive.
Embodiment two, shown in Figure 2, head sheave stress detection device structure is identical with Fig. 1, and difference is stress wireless sensor node 2 is fixed on the spoke of head sheave 1, and all the other annexations are identical with Fig. 1, slightly.
In Fig. 3, stress wireless sensor node 2 is made of the system level chip CC2430 module and the related peripheral circuit of power circuit, strain bridge circuit, signal conditioning circuit, support ZigBee agreement.Power circuit comprises a 3.6V lithium battery, low pressure difference linear voltage regulator and π type LC power decoupling isolator.The strain bridge circuit adopts the half-bridge connection, and four working arms are made up of a foil gauge, a temperature compensation sheet and two precision resistances being built in the node respectively.Signal conditioning circuit is made of preposition amplification and low-pass filter circuit.System level chip CC2430 module comprises elements such as CC2430 chip, antenna, crystal oscillating circuit and a spot of filter capacitor, balun transformer.The module peripheral circuit comprises reset circuit, reference voltage module and programming and expansion interface.The voltage signal of the 3.6V of lithium battery output, behind low pressure difference linear voltage regulator MAX16999, output 3.3V burning voltage has constituted bridge power supply, for strain bridge circuit, preposition amplification and low-pass filter circuit provide supply voltage.For suppressing the overriding noise source 1/f noise in the low frequency direct current measurement, select for use to have AD8553 precision amplifier from steady zero, low imbalance, low drift and high cmrr characteristic.Simultaneously, adopt the second order Butterworth LPF, to reduce the influence of high frequency such as radio frequency, numeral signal counter stress signal in the circuit.Stress signal after the conditioning inserts the inner integrated A/D converter of CC2430, and provides 3V reference voltage by the reference voltage module that REF193 constitutes for the A/D conversion, and the A/D transformation result deposits the CC2430 internal storage in.The high power high-frequency signal is CC2430 and peripheral circuit power supply thereof to the influence of bridge power supply after LC isolates with bridge power supply among the CC2430 in order to avoid.Expansion interface is that function expansion such as other signals of node detection and storage are provided convenience.
In Fig. 4, P1 is foil gauge and compensating plate interface, and R1 and R2 precision resistance are the brachium pontis that is built in the node, and potentiometer R4 is that bridge circuit is realized the hardware zeroing.The enlargement factor of amplifier AD8553 can be set up by potentiometer R9, and its output terminal links to each other with the resistance R 10 of second-order low-pass filter.Second-order low-pass filter is made up of Resistor-Capacitor Unit R10, R11, C4, C5 and operational amplifier OPA350, can filtering 100Hz above signal, output signal links to each other with the ADC input port " P0.0 " of CC2430 module.P2 is the battery supply input port, and employing diode D1 reversal connection over the ground plays preventing that battery from connecing the effect of anti-infringement circuit component at power end, links to each other with the input port " IN " of MAX16999 by switch S 1.Utilize the reset pin " RST " of MAX16999 to link to each other,, saved circuit board space for circuit provides reset signal with " RST " pin of CC2430 module; It enables " EN " pin and links to each other with " P1.0 " pin of CC2430 module, can enter low state of charge by " P1.0 " pin control MAX16999 under the park mode, reduces node power consumption; MAX16999 output pin " OUT " links to each other with decoupling capacitor C9, and links to each other with analog power port " VCC1 ".π type LC power decoupling isolator is made up of L1, C10 and C11, and its input end links to each other with C9, and output terminal links to each other with the power supply port of radio-frequency power supply " VCC2 ".R12, C13 and C14 constitute the power supply ripple path, can further reduce power supply ripple.Voltage Reference chip REF193 provides 3V external reference voltage for the CC2430 module, and its voltage output pin " OUT " links to each other with the external reference voltage input end " P0.7 " of CC2430 module.P3 and P4 are the CC2430 module interface, link to each other with " P0.0-P0.7 ", " P1.0-P1.7 ", " VCC2 " and " RST " port of CC2430 module; P5 is a programming port, links to each other with " P2.2 " port with the programming port " P2.1 " of CC2430 module; P6 and P7 are expansion interface, and be identical with the P4 mouth with P3.
In Fig. 5, wireless sensor network telegon 4 does not need to detect stress information, therefore, does not have strain bridge circuit and signal conditioning circuit in its structural design.Because wireless sensor network telegon 4 is in the real-time working state, energy consumption is bigger, and adopting alternating current is its power supply.The 220V AC power converts the 5V DC voltage to through AC-DC switch power module AOC_5S, provides stable 3.3V voltage by low pressure difference linear voltage regulator MAX16999 for CC2430 module and peripheral circuit then.Because the memory space of CC2430 is limited, is the FLASH storer AT45DB041 of 512kB for the telegon capacity of extending out.Adopt the MAX3243 chip to finish level conversion, realize the RS-232 communication of telegon and industrial computer.
In Fig. 6, P1 is the AC power input port, links to each other with " AC_L " with the ac input end mouth " AC_N " of AOC_5S through switch S 1 back.The output terminal of AOC_5S "+Vo " links to each other with the input end " IN " of MAX16999, and MAX16999 output terminal " OUT " links to each other with decoupling capacitor C2, for telegon provides 3.3V voltage.P2 and P3 are the CC2430 module interface, and P4 is a programming port, and P5 and P6 are expansion interface, and be all identical with the connectivity port in the node circuit." ROUT1 " of MAX3243, " DIN1 ", " DIN2 " and " ROUT2 " port link to each other with " P0.2-P0.5 " port of CC2430 module respectively, and its " DOUT1 ", " DOUT2 ", " RIN1 " and " RIN2 " port link to each other with " 232_TX ", " 232_CT ", " 232_RX " and " 232_RT " port of 9 pin RS-232 interface P7 respectively.The serial line interface of AT45DB041 chip " CS ", " SCK ", " SI " link to each other with " P1.4-P1.7 " port of CC2430 module respectively with " SO ", in order to finish data storage and read operation.
Claims (4)
1. hoister head sheave stress detection device, it is characterized in that: it comprises a plurality of stress wireless sensor nodes (2) that are located on the hoister head sheave (1), the sky wheel support (3) of hoister head sheave (1) is provided with the wireless sensor network telegon (4) that receives stress wireless sensor node (2) signal, and wireless sensor network telegon (4) connects industrial computer (6) through RS-232 bus (5).
2. hoister head sheave stress detection device according to claim 2 is characterized in that: described a plurality of stress wireless sensor nodes (2) are evenly arranged on the wheel rim or spoke of hoister head sheave (1).
3. hoister head sheave stress detection device according to claim 1, it is characterized in that: described stress wireless sensor node (2) comprises strain bridge circuit module, pre-amplifying module, low-pass filtering module, system level chip CC2430, reset circuit, reference circuits, programming and expansion interface, lithium battery, analog power, isolator and radio-frequency power supply, strain bridge circuit sequence of modules connects pre-amplifying module and low-pass filtering module, low-pass filtering module connected system level chip CC2430, system level chip CC2430 connects reset circuit respectively, reference circuits and programming and expansion interface, the lithium battery analog power that is linked in sequence, isolator and radio-frequency power supply, analog power connects the strain bridge module respectively, pre-amplifying module and low-pass filtering module, radio-frequency power supply connected system level chip CC2430, reset circuit and reference circuits.
4. hoister head sheave stress detection device according to claim 2, it is characterized in that: described wireless sensor network telegon (4) comprises system level chip CC2430, outside extended memory, reset circuit, RS-232 expands mouth, programming and expansion interface, AC-DC switch power module and low pressure difference linear voltage regulator MAX16999, system level chip CC2430 is connected with outside extended memory respectively, reset circuit, RS-232 expansion mouth and programming and expansion interface, the AC-DC switch power module output terminal that is connected with alternating current connects low pressure difference linear voltage regulator MAX16999, and the output terminal of low pressure difference linear voltage regulator MAX16999 connects outside extended memory respectively, reset circuit, RS-232 expansion mouth and system level chip CC2430.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202771431U CN201555676U (en) | 2009-12-01 | 2009-12-01 | Detection device for stress of head sheave of hoister |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202771431U CN201555676U (en) | 2009-12-01 | 2009-12-01 | Detection device for stress of head sheave of hoister |
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| CN201555676U true CN201555676U (en) | 2010-08-18 |
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| CN2009202771431U Expired - Fee Related CN201555676U (en) | 2009-12-01 | 2009-12-01 | Detection device for stress of head sheave of hoister |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849030A (en) * | 2014-12-19 | 2015-08-19 | 北汽福田汽车股份有限公司 | Dynamic load testing device for connecting rod |
| CN108534948A (en) * | 2018-04-02 | 2018-09-14 | 中国矿业大学 | A kind of on-line measuring device and method of mining pressure sensor |
-
2009
- 2009-12-01 CN CN2009202771431U patent/CN201555676U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849030A (en) * | 2014-12-19 | 2015-08-19 | 北汽福田汽车股份有限公司 | Dynamic load testing device for connecting rod |
| CN108534948A (en) * | 2018-04-02 | 2018-09-14 | 中国矿业大学 | A kind of on-line measuring device and method of mining pressure sensor |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20121201 |