CN103420240A - Intelligent type tensile force warning device - Google Patents

Intelligent type tensile force warning device Download PDF

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Publication number
CN103420240A
CN103420240A CN2013103397579A CN201310339757A CN103420240A CN 103420240 A CN103420240 A CN 103420240A CN 2013103397579 A CN2013103397579 A CN 2013103397579A CN 201310339757 A CN201310339757 A CN 201310339757A CN 103420240 A CN103420240 A CN 103420240A
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hanging basket
tensile force
intellectual
micro controller
controller system
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许宾
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Abstract

The invention provides an intelligent type tensile force warning device which can solve the problems that an existing tensile force warning device can not adjust the warning tensile force value automatically, loses protective function when a hanging basket is operated in a negative phase sequence and when an adhesion fault happens to a hanging basket control contactor, and can not generate warning action when a cable is not connected correctly. According to the technical scheme, the intelligent type tensile force warning device comprises a sensor, an amplifying circuit, a single chip microcomputer and an execution unit, the intelligent type tensile force warning device is characterized in that a control instruct detecting unit is further included, the control instruct detecting unit detects control instructs of an operator to the hanging basket and generates corresponding electric signals, the electric signals are input into the single chip microcomputer, the single chip microcomputer pre-stores a reference voltage calculation procedure corresponding the electric signals, the reference voltage obtained through calculation is compared with the output voltage of the amplifying circuit and judged, and corresponding control signals are output by the execution unit.

Description

Intellectual tensile force alarm device
Technical field
The present invention relates to building field, specifically, relate to a kind of intellectual tensile force alarm device that prevents that the aerial work basket cable is pulled off.
Background technology
Existing tensile force alarm device (patent No. is 201010005317.6) and electronic tension alarm device (patent No. is 201110460134.8) are all that the warning value of thrust concrete by manual setting realized warning function, basket of work (hereinafter to be referred as hanging basket) is while normally moving aloft, and its warning value of thrust can not randomly changing.
When hanging basket when higher floor is moved, the suffered pulling force of cable end approaches the suffered gravity of whole cables, so the warning value of thrust that above-mentioned two kinds of tensile force alarm devices are set must be greater than the value that the value of the suffered gravity of whole cables adds the maximum frictional force that when hanging basket normally moves, cable is subject to, the guarantee hanging basket is normally used like this.After having set this warning value of thrust, when hanging basket, when low floor operation is stopped because cable tangles, cable is tangled the resistance that position is subject to will be very large, so the position that cable is tangled just is easily damaged.
Digital pulling force alarm device (patent No. is 201110460141.8) prevents that by the pace of change of the suffered pulling force of monitoring cable end cable is pulled off.In the up process of hanging basket, be subject to resistance to finally being tangled from cable, the suffered pulling force of cable end must be not to increase suddenly, many times has one and becomes gradually large process.Also there is the process that becomes gradually large in the pace of change of the suffered pulling force of cable end in this case, and while to it, exceeding the alarming value of setting, and it is quite large that cable is tangled the resistance that position is subject to.If set too smallly by alarming value, when hanging basket normally moves, cable is subject to certain friction force and will causes actuation of an alarm to occur.As can be seen here, this setting fixedly the mode of alarming value can cause damage to cable equally.
Moreover above several tensile force alarm devices all realize stopping the hanging basket operation by controlling the hanging basket upstream circuitry.When hanging basket is used at the construction field (site), three plase alternating current need be through the construction main junction box to distribution electric box, be incorporated into the hanging basket switch box by cable, process fender guard and AC contactor could arrive the gig of hanging basket again, the wherein wiring of any one link change, capital changes the phase sequence of hanging basket hoisting power supply, because current commercially available hanging basket does not all arrange phase sequence protection circuit, so hanging basket is in actual use often in the negative-phase sequence running state, when hanging basket during in the negative-phase sequence running state, above-mentioned several tensile force alarm device all will lose protective effect.
The 3rd, easily produce adhesion fault after the long-term use of contactless switch, cause its main contact can not disconnect in time after coil blackout.All there is no the prevent adhesion protective circuit on the hanging basket of current all brands, above-mentioned several tensile force alarm devices are when contactless switch sticks together fault, even disconnect the up contactless coil circuit of hanging basket, hanging basket is about to cable and is drawn and badly even break on still can continuing.For the hanging basket of aloft work, the contactless switch adhesion fault also is very easy to cause dangerous the generation.
The 4th, due to hanging basket operative employee low culture quality in building industry, deliberately or forget cable and tensile force alarm device connection are occurred often, cause tensile force alarm device not play a role, cause unnecessary loss to the hanging basket owners.
In sum; a kind of intellectual tensile force alarm device that can automatic calibration warning value of thrust is provided; when the hanging basket negative-phase sequence is moved and still there is protective effect when the hanging basket control contactor sticks together fault; and produce actuation of an alarm when the hanging basket operative employee does not have the exact connect ion cable, should be very important.
Summary of the invention
The invention provides a kind of intellectual tensile force alarm device; existing tensile force alarm device can be solved and the warning value of thrust can not be automatically regulated; when the hanging basket negative-phase sequence is moved and lose protective effect when the hanging basket control contactor sticks together fault, can produce the problem of actuation of an alarm during exact connect ion at cable.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of intellectual tensile force alarm device, comprise sensor, amplifying circuit, micro controller system and performance element, it is characterized in that also comprising controlling instruction detection unit,
The described instruction detection unit of controlling detects the control instruction of operative employee to hanging basket, and produces corresponding electric signal and be input to described micro controller system,
The VREF (Voltage Reference) calculation procedure that described micro controller system prestores corresponding with described electric signal, compare the VREF (Voltage Reference) calculated with the output voltage of described amplifying circuit, judgement, then export corresponding control signal to described performance element.
The described instruction detection unit of controlling comprises the optocoupler part, and the electric signal that its produces is input to described micro controller system after by described optocoupler partial coupling.
The described instruction detection unit of controlling obtains ac signal according to the alternating-current voltage/AC voltage variation at connected hanging basket control button or hanging basket control contactor two ends.
The described instruction detection unit of controlling comprises the rectification module part, and described rectification module is partly for controlling the ac signal that instruction detection unit obtains and change DC signal into described.
The described instruction detection unit of controlling comprises up command detection part and the descending command detection part of controlling controlled,
The described up command detection part controlled is controlled instruction for detection of the operative employee to hanging basket up, and it detects that the operative employee presses or while unclamping hanging basket upload control button, produces corresponding upward signal and be input to described micro controller system,
The described descending command detection part controlled is controlled instruction for detection of the operative employee to hanging basket descending, and it detects that the operative employee presses or while unclamping the descending control button of hanging basket, produces corresponding downgoing signal and be input to described micro controller system.
As further optimization, described intellectual tensile force alarm device also is provided with the sensing rope, and described sensing rope upper end connects described sensor, and described sensing rope outside is provided with sheath.
As further optimization, described intellectual tensile force alarm device also is provided with metal case, and described sensor is fixed in described metal case, and described sheath upper end is fixed on described metal case, described sensing rope passes described sheath, described sensing rope lower end connecting cable geometrical clamp.
As further optimization, described amplifying circuit, described micro controller system, described performance element and the described instruction detection unit of controlling all are fixed in described metal case.
Intellectual tensile force alarm device basic setup
The same with digital pulling force alarm device, intellectual tensile force alarm device also comprises sensor, amplifying circuit, performance element and micro controller system.Sensor produces electric signal according to the tension variations of cable end, amplifying circuit is input to micro controller system after the electric signal of sensor mouth is amplified, the built-in analog to digital conversion circuit of micro controller system is digital signal by the analog-signal transitions of amplifying circuit input, micro controller system can calculate the output voltage of amplifying circuit at any time, and calculates the value of the pulling force that sensor is subject to.Performance element comprises warning circuit and relay, and warning circuit is provided with buzzer phone and LED light.
What have more advantage is that intellectual tensile force alarm device comprises and controls instruction detection unit, controls instruction detection unit more information can be provided.The operative employee presses or while unclamping the control button of hanging basket, controlling instruction detection unit can produce immediately corresponding electric signal (hereinafter to be referred as controlling signal) and be input to micro controller system, what the information that micro controller system can obtain comprised that the operative employee presses is upload control button or descending control button, press the moment of this button, press lasting long of this button, unclamp the moment of this button.According to the information of these information and amplifying circuit input, micro controller system can be made multiple judgement, and circuit in hanging basket is carried out to intelligent control.
In order to make tensile force alarm device have more practicality, intellectual tensile force alarm device also is provided with metal case, sensing rope and sheath, and it is convenient that these settings install it.Intellectual tensile force alarm device can be fixed on hanging basket working platform, also can be arranged on hanging basket switch box inside.When the inner installation of hanging basket switch box, only the sensing rope need be passed and gets final product from hanging basket switch box below.Sensing rope and length are greater than the summation of the height and the width of hanging basket working platform.The geometrical clamp of sensing rope lower end connecting cable end.
Intellectual tensile force alarm device obtains the mode of cable end pulling force information when hanging basket is descending
While in the hanging basket switch box or on hanging basket working platform, intellectual tensile force alarm device being installed, all should guarantee that it is placed in the hanging basket working platform outside (side on building masonry wall opposite).
In the descending process of hanging basket, after being tangled by obstacle, cable can move sensing rope lower end to the hanging basket working platform inboard.If it is descending that hanging basket continues, the sensing rope can be crushed on the hanging basket working platform below.In the hanging basket working platform inboard, cable end can impose on the pulling force that the sensing rope makes progress, and the sheath of sensing rope outside can change the direction of this pulling force, so, in the hanging basket working platform outside, the pulling force that sensor is subject to remains downward.
Intellectual tensile force alarm device is adjusted the concrete mode of warning value of thrust automatically:
Hanging basket is in up process, and the quality of cable movement part is ever-increasing, so the suffered pulling force of cable end constantly increases.When not being subject to extraneous resistance, the suffered pulling force of cable end can calculate.The geometrical clamp of cable end connects sensing rope lower end, so the pulling force that sensor is subject to equals the suffered pulling force of cable end.
Lower surface analysis once, when in the up process of hanging basket, cable is not subject to extraneous resistance, the situation of change of the pulling force that sensor is subject to:
When hanging basket power supply phase sequence is normal, in the moment of from the operative employee, pressing hanging basket upload control button, hanging basket is in accelerating uplink state, and establishing the now quality of cable movement part is M 0, sensor under tension F now 0With M 0Pass be,
F 0=M 0(g+a), i.e. M 0=F 0/ (g+a),
Along with the hanging basket acceleration is up, the quality of cable movement part constantly increases thereupon, and the length that cable movement partly increases equals the up distance of hanging basket
If it is a that hanging basket accelerates up acceleration/accel, accelerate up distance for S 1, accelerating the up time is t 1, the quality of every meter cable is m, acceleration due to gravity is g.
S 1=at 1 2/ 2, the mass M that cable movement partly increases Z1For, M Z1=mat 1 2/ 2
T 1In time period, hanging basket is in accelerating uplink state, so the tensile force f that sensor is subject to 1Should be expressed as
F 1=(M 0+M Z1)×(g+a)
=[F 0/(g+a)+mat 1 2/2]×(g+a)
=F 0+ma(g+a)t 1 2/2
After of short duration accelerator, hanging basket enters the uniform ascending state, and the speed of establishing the hanging basket uniform ascending is V, and the distance of uniform ascending is S 2, the time of uniform ascending is t 2,
S 2=Vt 2, the mass M that cable movement partly increases Z2For, M Z2=mVt 2,
T 2In time period, hanging basket is in the uniform ascending state, and the pulling force on sensor equals the suffered gravity of cable movement part, F 2Should be expressed as
F 2=(M 0+M Z1+M Z2)g
=F 0g/(g+a)+mgat 1 2/2+mgVt 2
At F 1And F 2Expression formula in, gravity acceleration g, the quality m of every meter cable, be constant.Because hanging basket is a kind of machinery of low cruise, how much load-carrying can be ignored for acceleration/accel a and speed uplink V impact, so during the suffered pulling force of calculating sensor, a and V can regard constant as.The operative employee presses the moment of hanging basket upload control button, and upward signal is input to micro controller system immediately, and micro controller system can calculate F 0, the time length of upward signal is the up time of hanging basket, so micro controller system can calculate F at any time 1And F 2Value.
In the up process of hanging basket, if the maximum resistance that allows cable to be subject to is f, at t 1In time period, micro controller system is made as F by the warning value of thrust 1+ f, at t 2In time period, micro controller system is made as F by the warning value of thrust 2+ f gets final product.
In the descending process of hanging basket, cable, in naturally drooping state, does not have the pulling force increase that friction force causes sensing to be subject to.When cable is tangled by obstacle, the quality of cable movement part can reduce rapidly, then reduces to gradually zero along with the hanging basket continuous decrease, if then hanging basket continues to descend, the pulling force that cable end is applied on sensor just can increase.Therefore can find out, even a very little value of the pulling force that now sensor is subject to just can be judged cable and be stopped by obstacle.So, in the descending process of hanging basket, when micro controller system detects pulling force that sensor is subject to and enlarging state occurs, as long as set a less warning value of thrust F X, just can effectively protect cable.
The phase sequence of powering due to hanging basket may change, so micro controller system can't be according to controlling signal judgement hanging basket in uplink state or downstream state, the variation tendency of the pulling force that can only be subject to according to sensor judges.
In the moment of controlling signal input micro controller system, at first micro controller system need to be defaulted as the hanging basket running state up, according to F 1+ f calculating formula is set the warning value of thrust, constantly reducing and be reduced to gradually after zero when micro controller system detects the pulling force that sensor is subject to, then to proofread and correct the warning value of thrust is F XGet final product.
As can be seen from the above analysis, the ratio of the pulling force be subject to according to sensor and the output voltage of amplifying circuit, micro controller system is by F 1+ f and F 2+ f and F XBe converted into corresponding VREF (Voltage Reference) U 1, with the output voltage of amplifying circuit, compare at any time, just can reach the purpose of automatic calibration warning value of thrust.
The mode of intellectual tensile force alarm device when cable is tangled
After the operative employee presses the hanging basket control button, micro controller system calculates VREF (Voltage Reference) U at any time according to controlling signal 1, the output voltage that amplifying circuit detected surpasses U 1The time, can judge cable and be tangled by obstacle, micro controller system will be immediately input control signal to performance element, thereby the control relay action disconnects hanging basket urgency power failure road, and the buzzer phone in the control warning circuit sends interrupted chimes of doom, control LED light and constantly glimmer; The U the calculated when output voltage that micro controller system detects amplifying circuit continues lower than the actuating of relay 1Value, control warning circuit and quit work, micro controller system assert that the time period of warning circuit work is an alarm cycle.
In the moment of the actuating of relay, the operative employee can not leave finger the hanging basket control button at once, so micro controller system can be judged the operative employee and supresses which control button according to controlling signal.
If micro controller system detects upward signal when an alarm cycle starts,, in this alarm cycle, micro controller system just can make relay reset while upward signal disconnection or downgoing signal input being detected; If micro controller system detects downgoing signal when an alarm cycle starts,, in this alarm cycle, micro controller system just can make relay reset while downgoing signal disconnection or upward signal input being detected.
The mode of operation of intellectual tensile force alarm device when the operation of hanging basket negative-phase sequence tangles cable
In the situation that hanging basket power supply phase sequence mistake, after the operative employee presses the descending control button of hanging basket, the descending control contactor action of hanging basket, but hanging basket can be in uplink state.If now cable is tangled by obstacle, micro controller system moves control relay, disconnects the anxious power failure of hanging basket road, and controls warning circuit work, and three plase alternating current can not arrive the descending control contactor of hanging basket, and hanging basket stops rising.Mode according to intellectual tensile force alarm device when cable is tangled, in this alarm cycle, micro controller system could reset by control relay while downgoing signal disconnection or upward signal input being detected, so the operative employee must press hanging basket upload control button, could be controlled hanging basket.After the operative employee presses hanging basket upload control button, the action of hanging basket upload control contactless switch, hanging basket will be in downstream state.The operative employee is by after the removal of obstacle of below, and the pulling force that sensor is subject to reduces greatly, the VREF (Voltage Reference) U the calculated when output voltage of amplifying circuit must continue lower than the actuating of relay 1Value, micro controller system will be controlled warning circuit and quit work, and finish this alarm cycle.
In like manner, when the operative employee presses hanging basket upload control button, hanging basket can be in downstream state.If enter alarm cycle, micro controller system detects that upward signal disconnects or during the downgoing signal input, just can make relay reset, so the operative employee only pins the descending control button of hanging basket, and controlling that hanging basket is up could clearing of obstruction.
The mode of intellectual tensile force alarm device when adhesion fault appears in the hanging basket control contactor
The workplatform of hanging basket is to rely on steel wire hang skyborne, the operative employee controls the moment of stopping after the hanging basket upstream or downstream, after workplatform runs out of steam, under the elastic force effect of self gravitation and steel rope, through vibration could be steady gradually for several times, the pulling force that sensor is subject to can be stable gradually after acute variation, and the output voltage of amplifying circuit also can be stable gradually after acute variation, and variation is suddenly big or suddenly small.
When adhesion fault appears in the hanging basket control contactor, after the operative employee unclamps hanging basket upload control button or descending control button, hanging basket can still continue up or descending according to original running state, the output voltage of amplifying circuit will inevitably continue increase or reduce according to original trend, rather than the process of acute variation occurs immediately.
Micro controller system can be judged hanging basket in uplink state or downstream state according to the output voltage variation tendency of amplifying circuit.If micro controller system is judged hanging basket when uplink state stops, assert that the output voltage values of the amplifying circuit of controlling signal disconnection moment record is VREF (Voltage Reference) U 2If micro controller system detects amplifying circuit after controlling signal disconnection output voltage in two seconds continues higher than U 2, can judge the hanging basket control contactor and adhesion fault occur; If micro controller system is judged hanging basket when downstream state is stopped, assert that the output voltage values of the amplifying circuit of controlling signal disconnection moment record is VREF (Voltage Reference) U 2If the output voltage that micro controller system detects amplifying circuit within two seconds of controlling after signal disconnects continues lower than U 2, can judge equally the hanging basket control contactor and adhesion fault occur.
The contactless switch fault that sticks together is not accidental, once adhesion phenomenon occur, the existing problems of its inside is described, continues use and adhesion phenomenon can often occur, has very big potential safety hazard, easily produces dangerous.So micro controller system detects the hanging basket control contactor while sticking together fault, by the Sustainable Control actuating of relay, and the buzzer phone of controlling in warning circuit sends continuous chimes of doom, controls LED light and continues luminous.After only having maintainer's replacing by the time or maintenance contactless switch, connect by three control buttons, give monolithic processor resetting information, micro controller system could be removed alarm condition.
As seen through the above analysis, when adhesion fault appears in the hanging basket control contactor, intellectual tensile force alarm device forces hanging basket out of service by disconnecting the anxious power failure of hanging basket road.This mode has more advantage than disconnecting the hanging basket upstream circuitry, not only can prevent that cable is pulled off, and can eliminate potential potential safety hazard.
Intellectual tensile force alarm device judgement cable does not have the mode of exact connect ion
Hanging basket is when the floor operation, and after the operative employee presses hanging basket upload control button or descending control button, the pulling force that sensor is subject to will inevitably continue increase or reduce.Only have hanging basket when installation or dismounting, the operative employee need to penetrate or exit steel rope to hanging basket hoisting, and the pulling force that now sensor is subject to is sustained, but this process duration is no more than half an hour at most.
Therefore, if micro controller system after the time cumulation of controlling signal input surpasses half an hour, detects the pulling force that sensor is subject to, do not change, can conclude that the operative employee is not by the intellectual tensile force alarm device of cable exact connect ion.
When micro controller system is set after start and controlled signal and input for the first time, the output voltage values of the amplifying circuit of record is VREF (Voltage Reference) U 3, in the given time, output voltage and the U of amplifying circuit detected 3Difference continue not change, micro controller system moves control relay, forces hanging basket out of service, and the buzzer phone of controlling in warning circuit sends continuous alarm sound, LED light is constantly glimmered, the prompting operation work is by the cable exact connect ion.Micro controller system detects output voltage and the U of amplifying circuit 3Difference while changing, remove alarm condition.
Compared with prior art, advantage of the present invention and good effect are:
1, intellectual tensile force alarm device can be warned value of thrust by automatic calibration, can protect better cable not drawn bad.
No matter 2 in the up process of hanging basket or in descending process, if cable is tangled by obstacle, intellectual tensile force alarm device can produce actuation of an alarm, prevents that cable from being hung bad.
3, when hanging basket power supply phase sequence mistake, intellectual tensile force alarm device still can play a protective role, and effectively prevents that cable from being drawn bad, and operation is very easy.
4, when contactless switch sticks together fault, intellectual tensile force alarm device can judge, and sends actuation of an alarm, eliminates potential potential safety hazard and guarantees that cable can not be pulled off.
5, the operative employee, forget or during deliberately by the cable exact connect ion, intellectual tensile force alarm device can produce actuation of an alarm, thereby guarantees that this device can effectively be used, and avoids bringing unnecessary loss to the hanging basket owners.
6, intellectual tensile force alarm device can send different alarms according to different faults, and convenient operation work and maintainer investigate fault in time.
The accompanying drawing explanation
Fig. 1 is the functional block diagram of intellectual tensile force alarm device of the present invention
Fig. 2 is metal case and sensor module connection diagram
Fig. 3 is that intellectual tensile force alarm device of the present invention obtains the schematic diagram of cable end pulling force information when hanging basket is descending
Fig. 4 controls instruction detection unit and relay partial circuit figure
Symbol in figure and explanation thereof
Shown in Fig. 1:
1, control instruction detection unit; 2, performance element;
Shown in Fig. 2:
3, sensor; 4, metal case; 5, the sensing rope; 6, sheath;
Shown in Fig. 3:
7, hanging basket working platform; 8, the hanging basket cable; 9, building masonry wall;
Shown in Fig. 4:
10, the up command detection part of controlling; 11, the descending command detection part of controlling;
SB1, hanging basket upload control button; KM1, hanging basket upload control contactless switch;
SB2, the descending control button of hanging basket; KM2, the descending control contactor of hanging basket;
SB3, the hanging basket scram button; KM3, the hanging basket main contactor;
KA, the relay of intellectual tensile force alarm device.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
A kind of intellectual tensile force alarm device as shown in fig. 1, comprise sensor, amplifying circuit, micro controller system and performance element, after controlling instruction detection unit 1 and the operative employee being detected and press upload control button or descending control button, produce upward signal or downgoing signal, after arranging dividing potential drop, by optocoupler to the micro controller system transmission of information.Performance element 2 comprises buzzer phone, LED light and relay, can carry out different actuation of an alarms according to the control signal of micro controller system output.
As shown in Figure 2, sensor 3 upper ends are fixed on metal case 4, sensing rope 5 upper end connecting sensors 3, and sheath 6 is fixed on metal case 4, and sensing rope 5 passes sheath 6.
As shown in Figure 3, in the descending process of hanging basket, when cable 8 is tangled by obstacle, can move sensing rope 5 and sheath 6 to hanging basket working platform 7 belows, sensing rope 5 and sheath 6 can change the direction of the pulling force of cable 8 ends, and sensor 3 can obtain the pulling force information of cable 8 ends in the descending process of hanging basket.
As shown in Figure 4, control instruction detection unit and comprise up command detection part 10 and the descending command detection part 11 of controlling controlled, the operative employee presses SB1, the KM1 action, the up rectifier bridge input terminal voltage of controlling command detection part 10 raises, mouth produces DC signal, optocoupler conducting, the DC signal that operating voltage raises to the micro controller system input voltage by optocoupler; The operative employee presses SB2, KM2 action, and the descending rectifier bridge input terminal voltage of controlling command detection part 11 reduces, and the mouth DC signal disconnects, and optocoupler can not conducting, the electric signal that operating voltage reduces to the micro controller system input voltage by optocoupler.During the KA action, the KM3 coil blackout, the KM3 main contact disconnects, and three plase alternating current can not enter KM1 and KM2, and hanging basket will stop upstream or downstream.
The above, be only preferred embodiment of the present invention, is not the present invention to be done to the restriction of other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not break away from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.

Claims (10)

1. an intellectual tensile force alarm device, comprise sensor, amplifying circuit, micro controller system and performance element, it is characterized in that also comprising controlling instruction detection unit,
The described instruction detection unit of controlling detects the control instruction of operative employee to hanging basket, and produces corresponding electric signal and be input to described micro controller system,
The VREF (Voltage Reference) calculation procedure that described micro controller system prestores corresponding with described electric signal, compare the VREF (Voltage Reference) calculated with the output voltage of described amplifying circuit, judgement, then export corresponding control signal to described performance element.
2. intellectual tensile force alarm device according to claim 1, it is characterized in that: the described instruction detection unit of controlling comprises the optocoupler part, the electric signal that its produces is input to described micro controller system after by described optocoupler partial coupling.
3. intellectual tensile force alarm device according to claim 1 is characterized in that: the described instruction detection unit of controlling changes and obtains ac signal according to the alternating-current voltage/AC voltage at connected hanging basket control button or hanging basket control contactor two ends.
4. according to the described intellectual tensile force alarm device of claim 1 or 3, it is characterized in that: the described instruction detection unit of controlling comprises the rectification module part, and described rectification module is partly for controlling the ac signal that instruction detection unit obtains and change DC signal into described.
5. intellectual tensile force alarm device according to claim 1, it is characterized in that: the described instruction detection unit of controlling comprises up command detection part and the descending command detection part of controlling controlled,
The described up command detection part controlled is controlled instruction for detection of the operative employee to hanging basket up, and it detects that the operative employee presses or while unclamping hanging basket upload control button, produces corresponding upward signal and be input to described micro controller system,
The described descending command detection part controlled is controlled instruction for detection of the operative employee to hanging basket descending, and it detects that the operative employee presses or while unclamping the descending control button of hanging basket, produces corresponding downgoing signal and be input to described micro controller system.
6. intellectual tensile force alarm device according to claim 1, is characterized in that also comprising the sensing rope, and described sensing rope upper end connects described sensor.
7. intellectual tensile force alarm device according to claim 6, it is characterized in that: described sensing rope outside is provided with sheath.
8. intellectual tensile force alarm device according to claim 1, is characterized in that also comprising metal case, and described sensor is fixed in described metal case.
9. according to claim 7 and 8 described intellectual tensile force alarm devices, it is characterized in that: described sheath upper end is fixed on described metal case, and described sensing rope passes described sheath.
10. according to claim 1 and 8 described intellectual tensile force alarm devices, it is characterized in that: described amplifying circuit, described micro controller system, described performance element and the described instruction detection unit of controlling all are fixed in described metal case.
CN2013103397579A 2013-07-26 2013-07-26 Intelligent type tensile force warning device Pending CN103420240A (en)

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CN105984777A (en) * 2014-09-17 2016-10-05 株式会社日立建筑系统 Main rope tension measurement device and main rope tension adjustment method
CN108801783A (en) * 2017-05-05 2018-11-13 捷帕(苏州)电子有限公司 A kind of harness tensile test system
CN111483897A (en) * 2019-01-29 2020-08-04 奥的斯电梯公司 Lifting rope monitoring device

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CN102530673A (en) * 2011-12-26 2012-07-04 许宾 Digital pulling force alarm device
CN102583125A (en) * 2011-12-26 2012-07-18 许宾 Electronic tension alarm device
CN202785145U (en) * 2012-04-17 2013-03-13 王文新 Elevator traction system protection device based on current detection

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105984777A (en) * 2014-09-17 2016-10-05 株式会社日立建筑系统 Main rope tension measurement device and main rope tension adjustment method
CN105984777B (en) * 2014-09-17 2018-07-17 株式会社日立建筑系统 Main rope tension determining apparatus and main rope tension adjusting method
CN108801783A (en) * 2017-05-05 2018-11-13 捷帕(苏州)电子有限公司 A kind of harness tensile test system
CN111483897A (en) * 2019-01-29 2020-08-04 奥的斯电梯公司 Lifting rope monitoring device

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