Enhancement of Mobile Scissor Lifting System for Windy ...

Nigerian Journal of TechnologyVol. 40, No. 2, 2021, 2021, pp. 229–240.

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Print ISSN: 0331-8443Electronic ISSN: 2467-8821

http://dx.doi.org/10.4314/njt.v40i2.8

Enhancement of Mobile Scissor Lifting System for WindyEnvironments

K. E. Jacka,∗, U. A. Essienb, O. S. Bamisayec, K. O. Pauld, E. E. Ozoemelae,C. N. Okpof

aDepartment of Mechatronics Engineering, School of Electrical Engineering & Technology, Federal University ofTechnology Minna, Niger State, NIGERIA.

bDepartment of Material & Metallurgical Engineering, School of School of Infrastructure, Process Engineering& Technology, Federal University of Technology Minna, Niger State, NIGERIA.

cDepartment of Mechanical Engineering, Air Force Institute of Technology Kaduna, Kaduna State, NIGERIA.dDepartment of Mechanical Engineering, Ogun State Institute of Technology Igbesa, Igbesa, Ogun State,

NIGERIA.eDepartment of Electrical and Electronic Engineering, Federal University of Technology Owerri, Imo State,

NIGERIA.fDepartment of Electrical/Electronics Engineering, School of Engineering Technology, Akanu Ibiam Federal

Polytechnic Unwana, Ebonyi State, NIGERIA.

AbstractThis paper focuses on the enhancement of mobile scissor lifting system for windy environments. This study was ne-cessitated in order to address the lack of support armproblem on themobile scissor lifting system for the strongwindenvironment such as Minna in Niger State Nigeria. The outstation broadcasting operations in Minna metropolisare usually challenging during windy days as wind often affects the stability and efficiency of the outstation broad-casting platforms. This research employs electronic control circuit to control mechanical hydraulic actuated scissorlifting system in response to variations in wind speed. The mechanical components were designed using solidworkssoftware. The control unit was remodeled using Proteus 8.0 software with the code written in Arduino integrateddevelopment environment (IDE). The model simulation results for both electronic andmechanical system reveal thepossibility of achieving system stability with the resultant signal fidelity in outstation telecommunication broad-cast within windy areas. The experiment result shows that the system was capable of lifting the telecommunicationplatform 2 meters high within 20 seconds considering the load range of 500 to 1000 kg. An overload alert mech-anism was incorporated to signal the operators of excessive loading. Then, the system automatically deploys itssupport arms to counter the attendant consequences of the strong wind thereby restoring the stability of the mobilescissor lift. Therefore, the authors conclude that the enhanced mobile scissor lifting system would be deployed inthe windy environment for the maximum attainment of stability objectives while physical model from this designshould be subsequently fabricated in the near future.

Keywords: mobile Scissors lift, enhanced model, telecommunication applications, outstation broadcasting,windy environment, stability

1. INTRODUCTION

Mobile scissor lifts are mechanical helical lift-ing system used as vertical load conveying equip-ment. This mechanical device aids in raising

∗Corresponding author (Tel: +234 (0)803 414 9749)Email addresses: [email protected] (K. E.

Jack), [email protected] (U. A. Essien),[email protected] (O. S. Bamisaye),[email protected] (K. O. Paul),[email protected] (E. E. Ozoemela),[email protected] (C. N. Okpo)

several equipment up depending on the applica-tions which includes high rise building construc-tion work, super-high-tension electrical installa-tion works and telecommunications works.

The practice of outstation broadcasting over theyears has been successful with the use of the sev-eral mobile scissor lifting approaches (Pneumatic,Rough Terrain, Electric, Diesel andHydraulic) forits operations. These operations include carryingof the broadcasting antennas, cameras and Satel-lite dishes, etc. as in the case of Minna metropoli-tan city in Niger State is known for its strongwind which poses several challenges to physical

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230 K.E. Jack, U.A. Essien, O.S. Bamisaye, K.O. Paul, E.E. Ozoemela and C.N. Okpo

structures such as broadcasting platforms and thelikes. One of the widely used mobile scissor lift-ing approaches is the electric mobile scissor liftingsystem. This is electrically driven whereas someare driven by fluid, air and others.In telecommunication engineering, items of

equipment are transferred from the ground levelto a certain height for different purposes. Taskundertaken by the mobile scissor lifting sys-tem depends on the designed maximum load,height and minimum efforts [1–3]. Telecommu-nication outstation broadcasting operations in awindy environment like Minna Metropolis withmobile scissor lifting system requires a stability-enhanced platform under load condition. Whenthe mobile scissor lifting system is above theground to a certain height, the centre of gravityseems to shift from its original position introduc-ing a little instability which can be translated toimbalances when strong wind blows [4].Figure 1 demonstrates the effect of wind on mo-

bile scissor lifting system. This model proposesan enhanced stability support for telecommunica-tion outstation broadcasting operations in MinnaMetropolis.

Figure 1: Effect of wind on mobile Scissor lifting sys-tem [5].

This is expected to serve as a strong wind suc-tion device which is aimed at enhancing stabil-ity for its outstation broadcasting equipments andservices.In view of the above therefore, these could be

replicated elsewhere for similiar wind conditions.Chaturvedi [6] analyses and validates that dy-namic and static mobile lift stability are some ofthe basic requrirements for maintenance work us-ing platform lifting system. This model proposesmulti-facet Aerial Lift in order to prevent mobilescissor lift collapse as a result of strong wind ef-fect.Telecommunication outstation broadcasting

podium in Minna Metropolis may witness asetback due to the windy nature of the environ-

ment. The high level of instability witnessedby the outstation broadcasting platforms re-sulting from heavy rainfall with strong windand large wind storm during windy days oftenaffects the telecommunication signal quality. Thewindy characteristics of Minna metroplitan citynecesitates the improvement of existing mobilelifting system by incoprating intelligent loaddetection and balance maintenance capabilitiesthrough an alternative support. The prime taskin this work is to develop an improved intelli-gent mobile scissor lifting system for outstationtelecommunication broadcasting applications inrespect of Minna metropolitan city. The spe-cific tasks are to:1.design an electrical remotelycontrolled microcontroller-based mobile scissorlifting system for outstation broadcasting ap-plications,2.design a mobile and wind tolerablescissor lifting system, 3.design an overload alertmechanism for system safe load lifting and 4.tocarry out simulation analysis of the systemmodel.Advancements in technology have continued to

play vital roles in improving the safety and ef-ficiency of the mobile lifting equipment. Man-ual scissor lifting system which was developed forminiature car lifting operation was further en-hanced to provide an automated system to under-take the same task.The prototype was developed for field applica-

tion for emergency conditions such as tyre re-placement on the road [7].Figure 2 shows a car lifting jack system which

deploys the mechanism of mobile scissor lifting toraise vehicle up for maintenance work [8–10].Mechanical system used in lifting heavy loads

with greater amount of applied forces is knownas Jack lift. This system deploys a square threadtechnique for its lifting operation because heavyequipment are involved and their system uses bat-tery [11]. Senthil [12] developed an automatedmobile scissor lifting system for the purpose ofcleaning ceiling fan with Atmega microcontroller.Dileepan [3] reviews mobile scissor lifting systemand confirms that the mobile scissor lift is pur-posely defined, and proposed a motorized liftingsystem for human convenience. The design usesPIC16F877 microcontroller for automobile work-shop lifting services with load easy lifting capa-bility. Dengiz [2] developed mobile scissor liftingsystem for industrial purpose with finite elementapproach, this design supports services such ascleaning, repairs and maintenance within 500kgload capacity and 2m working height. The modelwas designed with soildWorks design softwareand the structural investigation was also carriedout for its safety, stress and deflection. The systemwas demonstrated under load and no loads condi-tions. Rana [13] further worked on advanced tech-nological approach to scissor lifting system whichled to the development of an integrated motorizedautomated jack system with four wheels for mo-bile services.Refs. [14–16] developed a work-podium for

aerial services with cross support pattern and

Nigerian Journal of Technology (NIJOTECH) Vol. 40, No. 2, March 2021.

Enhancement of Mobile Scissor Lifting System forWindy Environments 231

(a)

(b)

Figure 2: Simple Automated Car Jack lifting system[8].

two hydraulic cylinders without wind tolerancedevice. Yimer [17] designed and implemented amovable dual mobile scissor lifting system for in-dustrial usage with the load limit of 280kg and1m height, the functionality was validated withthe following weight ranges : 102, 153, 204, and272kg at every stage of the demonstration , thedesign was made to attain the height of 1m with-out failure sign. Bao [18] studied a hydrauliclifting system with technology that enables loadweight detection and control. Similarly, [19, 20]evaluated the mobile scissor lift stability usingAMESim, ADAMS and LifeMOD model and thefall at rest systems were used to illustrate the sys-tem effectiveness considering the operators risk.Thorat [21] developed a hydraulic scissor liftingsystem with selected mild steel with the designload limit ranges of 3000kg to 4000kg load ca-pacity with the height of 2.1336m. Tian [22] de-veloped a scissor lifting system model with 3Dsoftware Pro/E , the simulated design was 8mhigh and platform was 1.8m by 0.9m wide for in-door and outdoor applications. In another devel-opment, [23, 24] used ASTM A36 steel to fabri-cate single stage scissor lifting system and theplatform dimension was 0.508m by 0.813m, thedesign height was 0.811m above the ground, theelectrically-driven design was optimized, the testresults validate that it was mobile, rigid, stable,versatile and safe for both indoor and outdoor op-erations. The work considered a load limit of500kg for a safe operation. Shrivastava [25] pro-

posed an embedded scissor lifting system withcurrent control device, signal conditioning criteriawas formulated to validate the design functional-ity. The reliability assessment of the system wascarried out with the MPU6050 software. In thework of Shi [26], three degree of freedom systemhydraulic scissor lifting device was developedwithartificial agent actuation for vehicle maintenancework. Also, one degree of freedom scissor lift wasproposed and the design was developed to trans-port only the load without human. The systemwas modeled using 20 sim commercial softwarepackage. Gonzalez [27] proposed novel six degreeof freedom system robots for scissor lifting opera-tions. This work proposed an intelligent mobilescissor lifting model for telecommunication out-station broadcasting operations in windy environ-ments like Minna Metropolis.

2. DESIGN METHODOLOGYMaterials and methods for the enhancement of

the intelligent mobile scissor lifting model are aspresented.

2.1. Materials/ResourcesScissor lift: Mild Steel Blade, Screws, Nuts and

bolts; Actuator: Hydraulic type; Transformer:Stepdown Transformer with 220V to 12V, 4A; ACMotor: Servomotor type; Motor Driver: L293D,Microcontroller: ATMEGA328P; Voltage Regu-lator: LM 7805 and LM 7812; Diodes: Lightemitting diode, bridge diode and crystal diode(IN4001); Resistors: Fixed type; 20Ω, 1kΩ,10kΩ and variable 10kΩ; Capacitors: 100µF and1000µF; Switch: Mechanical switch, transistorsand relay ; Liquid crystal display: 16 by 16, Ul-trasonic sensor: HS SR04; Arduino developmentboard and Keypad.

Figure 3: The block representation of the intelligentmobile scissor lifting model.

2.2. Methods2.2.1. The system architectureFigure 3 shows the block diagram for the en-

hanced intelligent mobile scissor lifting system.The system is divided into six units: power supplyunit which provides power to the motor and the



Figure 4: The electronic circuit for the intelligent mobile scissor lifting system .

electronic circuitries; the lifting unit aids in mov-ing the system up or down; the control unit reg-ulates the overall operation of the system, sens-ing unit aids in the deployment of the support tothe mobile scissor mechanism when activated bystrong wind and the display unit gives informa-tion on the status of the system.

2.2.2. The system designThe intelligent mobile scissor lifting system is

made up of an automated system which overseesthe electronic and electrical control. Then, a me-chanical system is incorporated with hydraulicsystems which uses the hydraulic actuators for itscontrol actions.

2.2.3. Electronic system designFigure 4 shows the electronic circuit config-

uration for the intelligent mobile scissor liftingmodel, where the microcontroller is programmedto intelligently manage the stability of the mobilescissor lifting system. The feedback system en-ables it to detect and react appropriately to vary-ing wind conditions for stability maintenance asdepicted in the flow chart of Fig. 5. Wheneverthe system experiences fluctuation in the signalwhich is caused by the wind storm, the controlinitiates support deployment to keep the systemstable.Figure 5 shows the procedural flow chart of the

improved intelligent Mobile scissor lifting system,the system is initailized and it begins to scan thestability status of the load. This is one of themajorcontributions of this work.Nonetheless, on an account of any instability

due to wind force, the system deploys its supportarms to stabilize the load. Instability results inthe loss of signal due to the wind storm. When

stability is established again, the system contin-ues its normal operation as the code is provided inAppendix A.

2.2.4. Mechanical system designThe main concept behind the mechanical com-

ponent of the design is the wind support systemincorporated in the scissors arms of the lift toserve as auxiliary and emergency support system.The system is designed to be driven on four tires,which must be deactivated to allow the systemrest on a rigid frame during lifting operations.The wind support system is made of four actuatorarms that are to be actuated by a sensor linked tothe control system, which deploys the wind sup-port arm whenever it senses instability and ex-cessive vibration. The emergency support armsare linked to the overloadmonitoring device whichsends overload signals to an operator and deploysthe emergency support arms and actuators to sup-port the entire weight of the system.Figure 6a shows a side view of the system on full

collapse mode, while Fig. 6b depicts the full liftingof the auxiliary lift which is designed to carry per-sonnel and loads up to the platform height.Fig. 7a shows the front view of the designed

model at full lift height while Fig. 7b shows theside view on full lift. Figure 8a and 8b shows theprojected view and the plan view of the device, re-spectively.Figure 9 shows the designed model on full lift

with the emergency support arms fully deployed,while Fig. 10 depicts the full deployment of thewind support arms at full lift. Figure 11 showsthe part numbering of the designed model. Thepart names are presented on Table 1.


Enhancement of Mobile Scissor Lifting System forWindy Environments 233Table 1: Part Names

Item number Part Name Qty.1 Base Frame 1 12 Base Frame 2 13 Hydraulic Actuator 1 44 Hydraulic Actuator 2 45 Scissors Link Arm 1 26 Scissors Link Arm 2 67 Scissors Link Arm 3 48 Scissors Link Arm Brace 1 29 Scissors Link Arm Brace 2 210 Scissors Link Arm Brace 3 611 Scissors Link Arm Brace 4 612 Wind Support Actuator 2 413 Wind Support Actuator 3 414 Wind Support Actuator 4 815 Tyre actuator 416 Tyre 417 Drive Nut 118 Drive Screw 119 Drive Nut Hinge 120 Top Frame 1 121 Top Rail Shaft 222 Top Frame 2 123 Tyre Shaft 424 Door 125 Link Joint Pivot 626 Electric Motor 127 Gear Box 128 Hydraulic System Circuit 129 E Support Arm 430 E Support Actuator 231 E Support Actuator 2 232 Hinge roller 433 Stud 434 Frame Bolt 3235 Barrel cover 236 Auxiliary lift actuator 3 137 Auxiliary lift actuator 3 138 Auxiliary lift actuator 3 139 Circuit Box 1

3. RESULTS AND DISCUSSION

3.1. Electronic System ResultThe microcontroller-based system improved in-

telligent mobile scissor lifting system for telecom-munication outstation broadcasting operations inwindy environments like Minna metropolis wasrealized. Table 2 shows resistance-voltage rela-tionship for distance determination.

3.1.1. Simulation resultsIn this simulation demonstrated, an ultrasonic

sensor was connected to the micro controller andthe virtual terminal was also connected to givesimulation results. The test pin was connected toa variable resistor of 10KΩ such that the voltage-resistance relationship determines the distancecovered by the sensor.The collapsible scissor lifting system on arrival

at an event center is positioned, and the # buttonwhen pressed lits the light emitting diode to indi-cate that the system is ON.

Figure 5: Flow chart for the the enhanced intelligentmobile scissor lifting system.

Figure 12 shows that the measured distance isproportional to the voltage, this means that as thevoltage increases, the distance also increases.Figure 13 shows that the Resistance is propor-

tional to the measured distance, this means thatthe resistance increases with increase in distance.Figure 14 shows that the varying resistance

is proportional to its corresponding voltage, thismeans that the voltage increases with the in-crease in resistance. But when the variable resis-tance adjustment is toggled up and down at cer-tain speed, the system with its embedded code ac-tivates the wind support arm in Pin A1 and A3while the LED lit indicator shows the system op-erational status.



Figure 6: Front and side elevation of the improved intelligent mobile scissor lifting system on full collapse mode.

Figure 7: Front and side elevation of the improved intelligent mobile scissor lifting system on full lift mode.

Table 2: The resistance-voltage relationship for distance determination.

Resistance (Ω) 0 10 20 30 40 50 60 70 80 90 100Voltage (v) 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5Distance (cm) 4 111 224 336 448 560 673 789 897 1010 1122



(a)

(b)

Figure 8: Projected view of the improved intelligentmobile scissor lifting system in a full collapse mode.

Figure 9: The full lift mode of the device on emergencysupport.

Figure 10: The full lift mode of the developed devicewith wind support arms deployed.



Figure 11: The part numbering of the designed scis-sor lifting model.

3.1.2. Experiment resultsThe model was demonstrated by placing the ul-

trasonic sensor in the mobile scissor lift at 2m(200cm) facing down with the normal wind orbreeze scenario and the reading was taken at firstinstance, at second instance, the rushing windscenario was created by varying the speed of thestanding fan to blow the model and the readingwas recorded using Pc Communication port fromthe Arduino IDE program platform. This demon-stration is in line with the opinion of [28] whichdefined wind as a three-dimensional vector thatcan easily affect the signal transmitted by ultra-sonic sensor. This formed the basis of the designconcept of which the study is hinged.With the experimented sample size of 20, the

enhanced scissor lifting system on attaining itsdesign height of 2m (200cm) with non-rushingwind distortion, recorded that the sensor readsexactly 2m(200cm) value within 38:18.0 through38:23:0seconds.Table 3 and Fig. 15 shows that within this con-

siderable time, the system was stable with a con-stant height attainment of 200cm, this impliesthat there was no rushing or strong wind interfer-ence with the mobile scissor lifting system modelas the height value remains unchanged through-out the experimented period.In Table 4, with the experimented sample

size of 20, the enhanced mobile scissor liftingsystem on attaining its design height of 2m(200cm) experiences non-rushing wind distortionand the recorded ultrasonic sensor reading was

Table 3: Data from the enhanced scissor lifting sys-tem without strong wind effect.

Distance (CM) Time(sec)1 200 38:15.02 200 38:19.03 200 38:19.24 200 38:19.45 200 38:19.66 200 38:19.87 200 38:20.18 200 38:20.09 200 38:20.510 200 38:20.711 200 38:20.912 200 38:21.213 200 38:21.414 200 38:21.615 200 38:21.816 200 38:22.017 200 38:22.318 200 38:22.519 200 38:22.720 200 38:23.0

Figure 12: The simulation plot of the distance againstvoltage for the enhanced mobile scissor lifting system.

2m (200cm) within sample 1 to 5 and the timereading from 39:15.0 through 39:20:6 but therushing wind distortion slightly distorted the sig-nal between sample 6 to 9 giving the time lag of39:20.8 through 39:21.5 with the height reduc-ing to 155.844cm(1.55844m); more so, at sample10 the height reads 129.871cm(1.29871m) corre-sponding to 39:21.7 seconds, whereas from sam-ple 11 to 14 strong wind erupted and exceeded thedesign threshold which is 103.896cm (1.03896m)within the time 39:21.0 through 39:22.6 therebyactivating the model to deploy the mobile scissorlifting support arms to cushion the effect of thestrong wind for stability attainment.Also, within sample 15 to 17, the rushing wind

distortion was gradually restored to 181.1818 cm(1.811818 m) within 39:22.8 to 39:22.3 seconds.However, within the sample of 18 to 20, the wildrushing wind was not experienced again and theheight was restored back to 200cm(2m) corre-sponding to 39:22.5 through 39:23.0 seconds.Table 4 and Fig. 16 show that within this con-



Figure 13: The simulation plot of distance against re-sistance for the enhancedmobile scissor lifting system.

Figure 14: The simulation plot of distance against Re-sistance for the enhanced scissor lifting system.

sidered time, the system was stable with a con-stant height attainment of 200cm.This reveals that there was neither rushing nor

strong wind interference in the mobile scissor lift-ing system between sample 1 to 5, a slight in-stability was witnessed in the model function-ality between sample 6 to 9 which reduced theheight reading to 155.844cm but until the dropin the sensor value got to the threshold of about100cm(1m) , the system automatically deploys thesupport arms to cushion the effect of strong windfor the designed broadcasting platform.

3.1.3. Manual operationTable 5 shows the lift height at different posi-

tions during operation, but during smart opera-tions when the button is pressed, the second timethe lift begins to release and mount the accessoryfor operations. The height attended at a particu-lar time is displayed on the liquid crystal display,this is as a result of the sensors correspondingfeedback. When the motor rotates, the lift contin-ues to move up or down depending on the controlaction.If the load limit is exceeded, the LED light be-

gins to blink thereby initiating an overriding ac-tion to bring down the platform but in the caseof system instability as a result of strong wind,the system automatically releases more auxiliarystability sub-structures to balance the effect of thewind. This emergency support action is one of theoutstanding aspects of this proposed design. At

Figure 15: The plot of the distance against the timeof the enhanced scissor lifting system without strongwind effect.

Figure 16: Results from the enhanced mobile scissorlifting system with strong wind effect.

the end of the event, the operator then presses the* button to stop the operation while the system isautomatically lowered and folded back.

3.2. Computer Aided Design Drawing for Im-proved Scissor Lifting System

Figure 17a shows the designed intelligent mo-bile scissor lifting system in full collapsed mode.This is when the system could be moved to servicesite either on its drive system or another vehicle.Figure 18 depicts the designed model in its full

lift height in service. At this point the systemrests on its base frame while the tyres are deactu-ated with the aid of a hydraulic system.Figure 19 depicts the side view of the device

in full lift mode with the emergency support ac-tuators fully deployed. An overload alert systemwas incorporated to signal the operators whenthe system is exceeding its bearing capacity limitwhile the system automatically deploys its sup-port arms to stabilize the platform for safe opera-tions.Figure 20 depicts the isometric view of the de-

signed model with the wind support actuatorsfully deployed. The wind support actuators aredeployed intelligently after stability assessmentby the control system is completed. It then, sensesany imbalance above the design threshold causedby any destabilizing forces. This emergency sup-port action is one of the outstanding aspects of thisdesign which can as well be initiated by an opera-tor using a remote device.



Figure 17: Isometric view of the designed intelligent mobile scissor lifting system in full collapsed mode.

Figure 18: Isometric view of the designed enhancedintelligent mobile scissor lifting system in full lift po-sition.

Figure 19: Side view of the designed improved intel-ligent mobile scissor lifting system.


Enhancement of Mobile Scissor Lifting System forWindy Environments 239Table 4: Data from the enhanced scissor lifting sys-tem with strong wind effect.

Distance (CM) Time(sec)1 200 39:15.02 200 39:19.03 200 39:19.24 200 39:19.45 200 39:20.66 155.844 39:20.87 155.844 39:20.18 155.844 39:20.39 155.844 39:21.510 129.871 39:21.711 103.896 39:21.912 103.896 39:21.213 103.896 39:21.414 103.896 39:22.615 181.182 39:22.816 181.182 39:22.017 181.182 39:22.318 200 39:22.519 200 39:24.020 200 39:23.0

4. CONCLUSION

The designed intelligent mobile scissor liftingsystem for outstation telecommunication broad-casting applications within Minna metropolitancity was remodeled. The instability of broad-casting platforms arising from strong wind dur-ing outstation broadcasting operations in Minnametropolis could be curtailed thereby providing astable and rigid outstation broadcasting platformfor its operation. This designed intelligent scissorlifting system model mitigates the effects of ex-cessive wind on mobile broadcasting platform us-ing mechanical and electronic system model. Themechanical and hydraulic actuated scissor liftingsystem was developed using solidworks software,and the microcontroller-based electronic systemwas modeled using Proteus 8.0 software with itsprogramme written in Arduino integrated devel-opment environment. The model simulation forboth electronic and mechanical system revealsthe possibility of managing outstation telecom-munication broadcast within Minna metropoliswith this intelligent, mobile and stability en-hanced scissor lifting system prototype. The de-sign was experimented and was capable of liftingthe telecommunication platform up to the heightof 2m at the speed of 20 seconds considering theload ranges from 500 to 1000kg. The overloadalert system was incorporated to signal the oper-ators when the system is exceeding its load limitwhile the system automatically folds its supportarms and lowers the platform for safe operations.The transformation of this simulated model tophysical system would be the next research work,hence the study concludes that the enhanced mo-bile scissor lifting systemwould be deployed in thewindy environment for stability attainment.

Figure 20: Isometric view of the designed enhancedintelligentmobile scissor liftingmodel onwind supportsystem.

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Table 5: Lifting position on manual operation.

Machine Interface key 0 1 2 3 4 5 6 7 8 9 10Lift Height (m) 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2

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Appendix A. Program Code for the en-hanced scissor lifting System

#include <LiquidCrystal.h>LiquidCrystallcd(2, 3, 4, 5, 6, 7);const int trigPin = 12;const int echoPin = 11;void setup ()Serial.begin(9600);lcd.begin(16,2);pinMode(trigPin, OUTPUT);

pinMode(echoPin, INPUT);lcd.setCursor(0,0);lcd.print("Distance");Serial.print("Distance");lcd.setCursor(0,1);lcd.print(" Measurement ");Serial.print(" Measurement ");delay(1000);lcd.clear();lcd.setCursor(0,0);lcd.print("Jack: ");delay(1000);Serial.print("Jack:");lcd.setCursor(0,0);lcd.print("Improved Scissor Lift");lcd.setCursor(0,1);lcd.print("Scissor Enhanced Simulation Model");Serial.print(" Jack Scissor Lift Result ");delay(2000);lcd.clear();void loop ()Int dis =digitalRead (11,12);If (dis >=40) //deploy wind support armsdigitalWrite(A1,HIGH);digitalWrite(A2,HIGH);digitalWrite(13,HIGH);Else if (dis< 40)//do not deploy wind support armslong duration, inches, cm;pinMode(trigPin, OUTPUT);digitalWrite(trigPin, LOW);delayMicroseconds(2);digitalWrite(trigPin, HIGH);delayMicroseconds(10);digitalWrite(trigPin, LOW);pinMode(echoPin, INPUT);

duration = pulseIn(echoPin, HIGH);inches = microsecondsToInches(duration);cm = microsecondsToCentimeters(duration);

Serial.print("Distance:");Serial.print(cm);Serial.print("cm");delay(100);Serial.println();lcd.setCursor(0,0);lcd.print("");delay(10);lcd.setCursor(0,1);lcd.print("Distance:");lcd.print(cm);lcd.print("cm");delay(100);long microsecondsToInches(long microseconds)return microseconds / 74 / 2;

long microsecondsToCentimeters(long microseconds)

return microseconds / 29 / 2;


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