CN103149481B - Comprehensive electrically propelled wheelchair tester - Google Patents
Comprehensive electrically propelled wheelchair tester Download PDFInfo
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- CN103149481B CN103149481B CN201310059071.4A CN201310059071A CN103149481B CN 103149481 B CN103149481 B CN 103149481B CN 201310059071 A CN201310059071 A CN 201310059071A CN 103149481 B CN103149481 B CN 103149481B
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Abstract
The invention relates to a comprehensive electrically propelled wheelchair tester comprising a power supply module and further comprising a processor, an electric parameter monitoring module and a motion parameter measuring module, wherein the power supply module is used for providing a power supply for an electrically propelled wheelchair tester; the electric parameter monitoring module is used for monitoring driving voltage and current outputted by the electrically propelled wheel chair power supply in real time, and transmitting collected real-time voltage and current signals to the processor to carry out the operation process; the motion parameter measuring module is used for simultaneously measuring the travels of a left wheel and a right wheel of an electrically propelled wheelchair and transmitting measurement signals to the processor to carry out the operation process so as to realize the detection in the speeds of a left motor and a right motor of the electrically propelled wheelchair. The comprehensive electrically propelled wheelchair tester disclosed by the invention can simultaneously measure electric parameters and motion parameters of the electrically propelled wheelchair, can measure the integral property of the electrically propelled wheelchair, and carries out the delivery inspection and the parameter correction according to the test result.
Description
Technical field
The present invention relates to a kind of electric wheelchair tester, particularly relate to one and can measure electric wheelchair voltage, electric current, speed, acceleration, stroke and wheel shaft simultaneously and to beat isoparametric composite type electric wheelchair.
Background technology
Existing electric wheelchair testing tool only can test a certain item parameter wherein, evaluates, as dynamic parameters such as voltage, electric current or strokes its a certain performance; And in the testing tool of the electric vehicle of other near field, its test monitoring object is more single, mainly based on speed and more subsidiary functions, such as to the test of battery electric quantity, temperature etc.
Refer to China Patent Publication No. CN2650142Y, disclose a kind of electric vehicle appliance comprehensive measuring instrument, it comprises a circuitry, hand, voltage test module, internal charger module, charger test module, controller test circuit, Switching Power Supply are made up of, each modular circuit has independent test function, can meet and carry out qualitative and quantitative analysis to the electrical quantity of auto electrical appliance.This patent mainly carries out independent measurement to the electrical equipment of electric motor car, relates generally to electrical quantity, and does not detect the parameter such as stroke, speed of electric motor car, thus cannot test to the overall performance of electric motor car.
And, electric wheelchair adopts Dual-motors Driving, it relies on speed discrepancy to realize the actions such as turning and rotation, the proving installation being applicable to electric motor car cannot realize the monitor and detection to bi-motor speed, have incompatibility to wheelchair test, it can not be evaluated the rationality of the one-piece construction of electric wheel-chair vehicle and circuit.
In view of above-mentioned defect, creator of the present invention obtains this creation finally through long research and practice.
Summary of the invention
This object is to provide a kind of composite type electric wheelchair tester, in order to overcome above-mentioned technological deficiency.
For achieving the above object, the invention provides a kind of composite type electric wheelchair tester, it comprises a power module, and in order to provide power supply to described tester, it also comprises:
One processor;
One electrical quantity monitoring module, it monitors driving voltage and the electric current of the output of electric wheelchair power supply in real time, and carries out calculation process by the real-time voltage of collection and current signal transfer to described processor;
One movement parameter measurement module, it measures the revolver of described electric wheelchair and right stroke of taking turns simultaneously, and metrical information is transferred in described processor and carry out calculation process, in order to realize the detection to electric wheelchair left and right motor speed and electric wheelchair acceleration.
Preferably, described electric wheelchair tester also comprises an expansion module, and it is connected with described processor, in order to test the overall performance parameter of described electric wheelchair.
Preferably, described electric wheelchair tester also comprises a display operational module, and the result of the electrical quantity of described processor calculating process, kinematic parameter and overall performance parameter shows by it, and is operated tester by operator.
Preferably, described movement parameter measurement module comprises:
One optoelectronic switch, it carries out pulse scanning to the revolver of electric wheel-chair vehicle and right wheel, induction vehicle wheel rotation position;
One sensor block is on its revolver being arranged on electric wheel-chair vehicle and right spoke of taking turns, relative with described optoelectronic switch scanning end;
One photoelectric isolating circuit, its scanning pulse signal sent by described optoelectronic switch carries out Phototube Coupling process, and by the information transmission after process to described processor.
Preferably, described movement parameter measurement module also comprises:
One mount pad, it is in order to support described optoelectronic switch;
One installs fixture block, and it coordinates with described mount pad, and in order to be fixed on by described mount pad, wheelchair is left and right takes turns on the support of side.
Preferably, described electric wheelchair tester also comprises:
One fixed mount, it is arranged on described electric wheelchair tester lower end, in order to be fixed on the handrail of described electric wheelchair by described electric wheelchair tester;
One expansion interface, it is arranged on the shell of described electric wheelchair tester, and it is a USB interface, and it connects computing machine or described expansion module by serial data transmission, carries out exchanges data;
One optoelectronic switch interface, it is arranged on described electric wheelchair tester shell, and it is row's needle interface, and it is in order to transfer to the metrical information of described movement parameter measurement module in described electric wheelchair tester.
Preferably, described expansion module is a ultrasonic distance measuring module, and described ultrasonic distance measuring module comprises a ultrasonic sensing stadimeter, and it is arranged on the rear end of described wheelchair, in order to the fluctuation information of testing wheel Wheel-chair wheel diameter maximum.
Preferably, described electrical quantity monitoring module comprises:
One voltage branch circuit, is provided with divider resistance, carries out stepping process, to meet the high-precision requirement of tester during tested voltage signal access;
One shunt, tested current signal is shunted by it, to improve the measuring accuracy of tested current signal;
One current amplification circuit, it comprises a High Precision Low Temperature and floats anti-tampering operational amplifier, in order to carry out secondary amplification to described shunt output current.
Preferably, described ultrasonic distance measuring module also comprises:
One adjuster bar, its two ends are connected with described wheelchair rear end support, it are provided with described ultrasonic sensing stadimeter;
One MCU processor, it is placed in described ultrasonic sensing stadimeter, and it processes the fluctuation information of measured wheel chair wheel, analyzes the situation of beating of described electric wheelchair wheel;
One serial ports data transmission circuit, the data timing after the process of MCU processor is transferred in described processor by it.
Preferably, described display operational module comprises:
One liquid crystal display circuit, the output information of described processor is transferred to a liquid crystal display and shows by it;
One LED circuit, the output information of described processor transfers on the function LED that is connected with described LED circuit by it;
One key circuit, it is by the operation push-button information transmission on tester to described processor.
Preferably, described tester also comprises a hardware watchdog, and it comprises a timer circuit, and is connected to the reset terminal of processor connecting circuit.
Beneficial effect of the present invention is compared with the prior art: described electric wheelchair tester can be measured its electrical quantity and kinematic parameter simultaneously, metrical information processes through described process, the speed exported and current curve, acceleration and voltage curve, reflect whether the load capacity of wheelchair, energy consumption and circuit are in safety current, whether line design is reasonable, contribute to selecting suitable electric component, circuit reasonable in design and stable complete vehicle structure; Adopt optoelectronic switch, can realize, simultaneously to the monitor and detection of electric wheelchair left and right motor, the deviation phenomenon of wheelchair can being eliminated; Adopt beating of ultrasonic measurement wheel, be convenient to repair, to extend the serviceable life of wheelchair; Be provided with a display operational module, realize the visual of data display; Described tester is installed on handrail, and convenient operation person debug.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of composite type electric wheelchair tester of the present invention;
Fig. 2 is the functional block diagram of composite type electric wheelchair tester of the present invention preferred embodiment;
Fig. 3 is the processor connecting circuit schematic diagram of composite type electric wheelchair tester of the present invention preferred embodiment;
Fig. 4 is the voltage branch circuit figure of composite type electric wheelchair tester of the present invention;
Fig. 5 is the current amplification circuit figure of composite type electric wheelchair tester of the present invention;
Fig. 6 is the optoelectronic switch scheme of installation of composite type electric wheelchair tester of the present invention;
Fig. 7 is the photoelectric isolating circuit figure of composite type electric wheelchair tester of the present invention;
Fig. 8 is the scheme of installation of the ultrasonic sensing stadimeter of composite type electric wheelchair tester of the present invention;
Fig. 9 is the expansion module circuit diagram of composite type electric wheelchair tester of the present invention;
Figure 10 is the serial data transmission circuit schematic diagram of composite type electric wheelchair tester of the present invention;
Figure 11 is the rear view of composite type electric wheelchair tester of the present invention;
Figure 12 is the watchdog circuit figure of composite type electric wheelchair tester of the present invention.
Embodiment
Below in conjunction with accompanying drawing, to above-mentioned being described in more detail with other technical characteristic and advantage of the present invention.
Refer to shown in Fig. 1, its schematic diagram being composite type electric wheelchair tester of the present invention, in this tester, its its main operational control section is a processor 1, it carries out real-time operation process to the data that electrical quantity monitoring module 2, movement parameter measurement module 3 and an expansion module 4 gather, and shows the net result of operational module 5 Graphics Processing by one.Composite type electric wheelchair tester of the present invention, wherein, described electrical quantity monitoring module 2, described movement parameter measurement module 3 and described expansion module 4 constitute the monitor and detection part of composite type electric wheelchair tester of the present invention, described electrical quantity monitoring module 2, in order to monitor driving voltage and the electric current of the output of electric wheelchair power supply in real time, and by the voltage of collection, current signal transfer to described processor 1, and show in described display operational module 5; Described movement parameter measurement module 3, it measures the revolver of described electric wheelchair and right stroke of taking turns simultaneously, and metrical information is transferred in described processor 1 and carry out calculation process, in order to realize the detection to electric wheelchair left and right motor speed and electric wheelchair acceleration; Described expansion module 4 is connected with described processor 1, in order to test the overall performance parameter of described electric wheelchair; Described expansion module 4 carries a MCU processor, and Detection Information, after the process of described MCU processor, transfers to described processor 1; The result of the electrical quantity of described processor 1 calculation process, kinematic parameter and overall performance parameter is presented on a display by described display operational module 5, and described display is by button input control; Described power module 6 is in order to provide power supply to each module of described electric wheelchair tester.
Refer to shown in Fig. 2, its functional block diagram being composite type electric wheelchair tester of the present invention preferred embodiment, in the present embodiment, described processor 1 is a single-chip microcomputer, it can be MC-51, AT89C52, STC89C52 the compute chip such as 51, at this, single-chip microcomputer that main process chip is STC12C5A16S2 is described, its built-in 8K × 8EEPROM erasable memory, theory can follow-on test 20 groups of data (often organize data sampling 20 times), Fragmentation is carried out according to data difference, page erasing is pressed during erasing, described scm software programming adopts C language, it revises convenient, portable strong.And, described main process chip carries ADC conversion, when the simulating signal such as test voltage, electric current, after simulating signal carries out amplification filtering process, directly can access the ADC translation interface of described processor 1, process to make described processor 1 pair of electric current, voltage signal.
Refer to shown in Fig. 3, its processor connecting circuit schematic diagram being composite type electric wheelchair tester of the present invention preferred embodiment, and shown in composition graphs 2, the connecting circuit of described processor 1 is provided with the port (not shown in FIG.) be connected with current amplification circuit 27 with the voltage branch circuit 24 in described electrical quantity monitoring module 2, in order to transmit the electrical quantity data detected; Serial ports connectivity port 110, it is connected with the serial data transmission circuit 44 in described expansion module 4, in order to transmit ultrasonic test data, can also be connected with the external pc port of processor 1, carry out the operations such as PC on-line operation, digital independent and file, the technical parameter that dispatches from the factory file and printing reports; Liquid crystal display control end 113, it is connected with the port of described liquid crystal display circuit 55, in order to control in real time described liquid crystal display 56; Key-press input interface 112, it is connected with described key circuit 53; Pulse inquiry entrance 111, it is connected with the photoelectric isolating circuit 31 in described movement parameter measurement module 3, detects in order to pulse signals; LED output interface 114, it is connected with described LED circuit 51, in order to control the duty of described function LED52; Described processor 1 is computing and the control core of whole test macro, is stored with the various operation programs processed detection signal.
In the present invention, the power supply that the electrical quantity monitoring module 2 of tester is tested is wheelchair primary power 21, and described tester is provided with a plug, it adopts the first wife SA50 plug of compatible PG system, and be namely applicable to the vehicle of this systems all, it has higher universality.Shown in Fig. 2, described tester processes its voltage signal and current signal after gathering wheelchair primary power 21, and these two parameters of voltage and current are important projects of this tester test, and its measuring accuracy is even more important.
Refer to shown in Fig. 4, its voltage branch circuit figure being composite type electric wheelchair tester of the present invention, in the present embodiment, tested voltage signal is 24V ± 4V, stepping process will be carried out when accessing, divider resistance R22 and R23 is provided with in described voltage branch circuit 24, its one end picks out the 1st gear and the 2nd gear respectively, described 1st gear voltage is between 0-5V, described 2nd gear voltage is between 0-50V, to meet higher measuring accuracy demand, described voltage signal, after voltage branch circuit 24, inputs described processor 1 and processes.
Refer to shown in Fig. 5, its current amplification circuit figure being composite type electric wheelchair tester of the present invention, in the present embodiment, when tested current signal is between 0-30A, need to increase shunt 26, shown in Fig. 2, described shunt 26 specification is 75mV/50A, after increasing shunt 26, tested electric signals only has 0-75mV, need to carry out precision amplification to this signal again, in the present embodiment, adopt F030 High Precision Low Temperature to float anti-tampering operational amplifier to amplify, be characterized in carrying out secondary amplification (as shown in Figure 5), enlargement factor can arrive 100 times, its operational formula is as shown in calculating formula (1),
Wherein, I is the output current of described current amplification circuit 27, U
afor surveyed magnitude of voltage.
Described current signal transfers to described processor 1 and processes after shunt 26 and current amplification circuit 27 process.
Described electrical quantity monitoring module 2 monitors electric current and the voltage signal of described wheelchair primary power 21 in real time, and it reflects the energy consumption of wheelchair to a certain extent, and under whether circuit is in safety current duty, and whether line design is reasonable.
The difference of electric wheelchair and electric motor car is, electric wheelchair uses Dual-motors Driving, its left and right wheels respectively connects a motor, speed discrepancy is relied on to realize the actions such as turning and rotation, but due to the difference of motor itself, as internal resistance, permanent magnet magnetic etc. can cause speed difference, when wheelchair moving linearly, may there is deviation phenomenon in it, therefore must carry out adjustment when motor coupling and Default Value under authentic data and arrange.
Movement parameter measurement module 3 of the present invention can meet the demand, shown in Fig. 2, it comprises optoelectronic switch 33 and erecting device, photoelectric isolating circuit 31, and described optoelectronic switch 33 is simultaneously to wheelchair revolver 32 with wheelchair is right takes turns 34 and carry out pulse scanning, induction vehicle wheel rotation position.Refer to shown in Fig. 6, it is composite type electric wheelchair tester optoelectronic switch scheme of installation of the present invention, it comprises a sensor block 331, it is directly installed on wheelchair revolver 32 and wheelchair is right takes turns on the spoke of 34, step up with fixture block screw, it can regulate according to the installation site of optoelectronic switch 33, relative with the scanning end of described optoelectronic switch 33; Also comprise an optoelectronic switch mount pad 332, in order to support described optoelectronic switch 33; One installs fixture block 335, and it coordinates with described mount pad 332, and in order to be fixed on by described mount pad 332, wheelchair is left and right takes turns on the support of side.
Refer to shown in Fig. 7, its photoelectric isolating circuit figure being composite type electric wheelchair tester of the present invention, described optoelectronic switch 33 sends scanning pulse signal, after photoelectric isolating circuit 31 carries out Phototube Coupling process, by vehicle wheel rotation information transmission to described processor 1.When the vehicle wheel rotation of described wheel-chair, sensor block 331 in described left and right wheels is with vehicle wheel rotation, wheel often rotates one week, described optoelectronic switch 33 occurs once to respond to described sensor block 331, and induced signal is delivered in described processor 1 through described photoelectric isolating circuit 31 by described optoelectronic switch 33.In described processor 1, it is accumulative that stroke adopts counter to interrupt, according to the left and right girth of taking turns of wheelchair and unit pulse computation of Period stroke, measure the time between each recurrent pulse, obtain wheelchair speed by stroke divided by Time Calculation, then deduct the speed of upper one-period with present speed, divided by the cycle, the acceleration in the monocycle can be obtained, and by the positive and negative differentiation acceleration of numerical value and retarded velocity.The calculation procedure of the trip, speed and acceleration is stored in described processor 1.
Described movement parameter measurement module 3 is measured and is obtained the velocity amplitude of bi-motor through the computing of described processor 1, described processor 1 is by two-wheel velocity contrast, calculate the velocity error of two-wheeled, and the parameter of wheelchair manipulater is corrected according to this error amount, ensure that wheelchair can straight line moving, described manipulater is positioned on the handrail of wheelchair; And, the velocity variations of wheel affects the vibrations of wheel, install when car load and coordinate, steadily of centre of gravity, front and back wheel is firm, then wheel and car load shake very little, and therefore the situation of change of wheel vibrations under certain speed reflects the situation of current car load, so that better the structure of design wheelchair, improves the wheelchair life-span; Also the Changing Pattern of electric current is affected with hourly velocity.
As the substitute mode of the present embodiment, described wheelchair velocity test mode can also adopt electromagnetic type Hall switch, infrared switch, it also can realize the test to left and right motor speed and wheelchair stroke, and its pulse signal trigger theory is substantially identical with above-mentioned optoelectronic switch, does not do tired stating at this.
Described expansion module 4 can be preferably a ultrasonic distance measuring module, it can also be light modulated ranging phase method, spectrum is found range, the modules such as laser ranging, described ultrasonic distance measuring module comprises a ultrasonic sensing stadimeter 42 in the present embodiment, refer to shown in Fig. 8, its scheme of installation being composite type electric wheelchair tester ultrasonic sensing stadimeter of the present invention, described ultrasonic sensing stadimeter 42 is provided with ultrasound wave launch and accept mould 423, described ultrasonic sensing stadimeter 42 is installed on an adjustable pole 424, described adjustable pole 424 two ends are provided with mounting blocks 425, described adjustable pole 424 is connected with wheelchair rear end support, and it is parallel with described wheelchair wheel direction of principal axis, ensure that the fluctuation of wheel diameter maximum responded to by described ultrasonic sensing stadimeter 42.
Described ultrasonic sensing stadimeter 42 is launched by the ultrasound wave on it and is accepted mould 423, the fluctuation information at test wheel chair wheel 41 largest diameter place, and this information is processed.Refer to shown in Fig. 9, its expansion module operating circuit being composite type electric wheelchair tester of the present invention, clock chip DS12C887, thermal module DS18B20 and a MCU processor 43 is provided with in described ultrasonic sensing stadimeter 42, in the present embodiment, described MCU processor 43 adopts 8 chips of STC89C52, work dominant frequency 12MHZ, the fluctuation information in order to the wheel chair wheel 41 to input carries out calculation process, analyzes the situation of beating of wheel chair wheel; The error that described thermal module brings in order to compensate and to revise ultrasound wave Yin Wendu, ensures its measuring accuracy; Described clock chip carries out data transmission by external USB serial ports, and the reading of time data simultaneously is also obtained by described serial communication.
Described ultrasonic sensing stadimeter 42 one end is also provided with a data transmission interface 421, in order to carry out data transmission with described processor 1, serial communication is adopted to carry out exchanges data between described expansion module 4 and described processor 1, refer to shown in Figure 10, it is composite type electric wheelchair tester serial data transmission circuit schematic diagram of the present invention, in figure, A controls as described processor 1, B controls as the MCU processor 43 in expansion module, in the present embodiment, described serial data transmission circuit 44 adopts USB interface to carry out exchanges data.Described MCU processor 43 arranges the ultimate range that wheel allows, and by poor to the distance measured in real time and this ultimate range, its difference is runout error, and described MCU processor 43 is according to apart from situation of change, the i.e. situation of beating of runout error analysing vehicle wheels.
Initialization system after described expansion module 4 powers on, ultrasonic sensing stadimeter 42 starts the fluctuation detecting described wheel chair wheel 41, gained fluctuation number is reportedly transported to described MCU processor 43 and is processed, draw runout error, and the data after process are processed through serial data transmission circuit 44 timing transmission in processor 1.
Easily exception is there is in left and right wheel of electric wheelchair when motor shaft and vehicle frame are installed, cause during vehicle wheel rotation and produce slight jumping phenomena, by ultrasound examination, this beats described expansion module 4, and eliminates wheel and beat, to extend the serviceable life of wheelchair carrying out thereafter reparation.
Measurement data in above-mentioned electrical quantity monitoring module 2, movement parameter measurement module 3 and expansion module 4, after described processor 1 calculation process, transfers to described display operational module 5 and carries out visual display.Described display operational module 5 comprises liquid crystal display 56, operation push-button 54, function LED52, described liquid crystal display 56 adopts 128 × 64 matrix form display panels, can simultaneously Chinese display and image, its often row can show 8 Chinese characters, 16 English and symbol, support dynamic picture process, therefore can realize data to manifest with coordinated manner, each display frame all switches by corresponding operation push-button 54, output signal is transferred to liquid crystal display 56 by liquid crystal display circuit 55 by described processor 1, it is driven to show the kinematic parameter of described processor 1 calculation process gained, electrical quantity, peripheral hardware condition, axle such as to be beated at the metrical information, performance graph schematic diagram can also be shown, the i.e. electric current of processor 1 calculation process, voltage is with stroke change curve, wheel vibrations are with speed change curves, described processor 1 drives described function LED52 by a LED circuit 51, and described function LED52 is common light emitting diode, and its duty controls by described processor 1, described operation push-button 54 is arranged on described tester outside surface, it comprises beginning, pause button, displaying contents switching push button, optimum configurations key, upper and lowerly turn over key, reset key and image display/array switching key, described operating buttons 54 will input in information transmission to described processor 1 by a key circuit 53, for its process.
Described display operational module 5 can also adopt LCD1602,1606 or segment code type display, described liquid crystal display 56 can be Serial Port Transmission mode with the connected mode of processor 1, IIC transmission mode, SPI transmission mode etc., in the present embodiment, adopt parallel port transmission mode, its transmission speed is the fastest, can meet the requirement that the present invention is transmitted data.
Refer to shown in Figure 11, its rear view being composite type electric wheelchair tester of the present invention, it comprises fixed mount 116, testing power supply input socket 112, testing power supply accessory power outlet 113, test macro voltage input socket 114, expansion interface 115 and an optoelectronic switch interface 117, described fixed mount 116 is in order to be fixed on the handrail of wheelchair by described tester lower end, and tester can carry out associative operation when taking wheelchair to testing tool; Described testing power supply input socket 112, in order to transfer in the processor 1 of described tester by the power supply signal of described wheelchair primary power 21; Described test macro voltage input socket 114, it is in order to transfer in described tester by tester required voltage, normally run to make described tester, in the present invention, described tester power supply is provided by external connection battery, it adopts 24VDC, adopts 5A lithium battery in the present embodiment, and it is connected by outer connecting line with described test macro voltage input socket 114; Described tester can also use electric wheelchair power supply as power supply, but can affect the measuring accuracy of electric current and voltage.
Described expansion interface 115 is a USB interface, and it connects the MCU processor 43 in PC or described expansion module 4 by serial data transmission, it ensures that described expansion module can be applied to multiple electrical equipment; Described optoelectronic switch interface 117, it is row's needle interface, and it is connected with described photoelectricity switch buffer circuit 31, in order to be transferred in described tester by optoelectronic switch scanning information.
Mess code is being produced by the external world or internal operation erroneous effects in order to prevent program, and prevent from implementing to store to processor by mistake, a present invention also external hardware sees doorway, refer to shown in Figure 12, its watchdog circuit figure being composite type electric wheelchair tester of the present invention, it is provided with a timer circuit, and be connected to the reset terminal of processor 1 connecting circuit, if system does not carry out in 1.6 seconds feeding dog, carry out system reset, and test No. is from increasing 1, data that so just can be then original continue test, and described watchdog circuit is subsidiary manual set also, to ensure that test macro can be accurate, the operation of safety.
As a large feature of composite type electric wheelchair tester of the present invention, it can measure kinematic parameter and the electrical quantity of described electric wheelchair simultaneously, especially speed can affect the Changing Pattern of electric current, electric current rises with speed linearity under normal circumstances, in the processes such as upward slope, obstacle detouring, electric current can rise at double simultaneously, safety current state whether is in, to make line design reasonable by the load capacity of this change curve reflection wheelchair, energy consumption and circuit; Acceleration, it directly affects total kilometres amount, and the size of voltage reflection current electric quantity, keep certain linear relationship with stroke to a certain extent.The real-time testing data of described speed and electric current, voltage and stroke, after described processor 1 processes, described speed, time curve and voltage, stroke curve are presented in the liquid crystal display on described Operation display module, to realize visual to test result, in described processor 1, store the operation program of described speed and electric current, voltage and stroke curve.
In addition, described processor 1 also processes the beating information of wheel shaft and velocity information, and its timing exports wheel vibrations with the curve of velocity variations on display operational module 5, stores the operation program of described speed and wheel shock curve in described processor 1.
Test this series data mainly for design service, select suitable electric component, as: motor, battery etc., circuit reasonable in design, design stability complete vehicle structure etc.In actual production, must carry out safety test during factory inspection to each electric wheelchair, check that whether speed parameter is reasonable, whether electric current is stable.
The foregoing is only preferred embodiment of the present invention, is only illustrative for the purpose of the present invention, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes in the spirit and scope that the claims in the present invention limit to it, amendment, even equivalence, but all will fall within the scope of protection of the present invention.
Claims (9)
1. a composite type electric wheelchair tester, it comprises a power module, and in order to provide power supply to described electric wheelchair tester, it is characterized in that, it also comprises:
One processor;
One electrical quantity monitoring module, it monitors driving voltage and the electric current of the output of described electric wheelchair power supply in real time, and carries out calculation process by the real-time voltage of collection and current signal transfer to described processor;
One movement parameter measurement module, it measures the revolver of described electric wheelchair and right stroke of taking turns simultaneously, and metrical information is transferred in described processor and carry out calculation process, in order to realize the detection to electric wheelchair left and right motor speed and electric wheelchair acceleration;
Described electric wheelchair tester also comprises an expansion module, and it is connected with described processor; Described expansion module is a ultrasonic distance measuring module, and described ultrasonic distance measuring module comprises a ultrasonic sensing stadimeter, and it is arranged on the rear end of described electric wheelchair, in order to test the fluctuation information of the wheel diameter maximum of described electric wheelchair.
2. composite type electric wheelchair tester according to claim 1, it is characterized in that, described electric wheelchair tester also comprises a display operational module, the result of the fluctuation information of the electrical quantity of described processor calculating process, kinematic parameter and wheel diameter maximum shows by it, and is operated described electric wheelchair tester by operator.
3. composite type electric wheelchair tester according to claim 1, is characterized in that, described movement parameter measurement module comprises:
One optoelectronic switch, it carries out pulse scanning to the revolver of described electric wheelchair and right wheel, induction vehicle wheel rotation position;
One sensor block is on its revolver being arranged on described electric wheelchair and right spoke of taking turns, relative with described optoelectronic switch scanning end;
One photoelectric isolating circuit, its scanning pulse signal sent by described optoelectronic switch carries out Phototube Coupling process, and by the information transmission after process to described processor.
4. composite type electric wheelchair tester according to claim 3, is characterized in that, described movement parameter measurement module also comprises:
One mount pad, it is in order to support described optoelectronic switch;
One installs fixture block, and it coordinates with described mount pad, and in order to be fixed on by described mount pad, wheelchair is left and right takes turns on the support of side.
5. the composite type electric wheelchair tester according to the arbitrary claim of claim 1-4, is characterized in that, described electric wheelchair tester also comprises:
One fixed mount, it is arranged on described electric wheelchair tester lower end, in order to be fixed on the handrail of described electric wheelchair by described electric wheelchair tester;
One expansion interface, it is arranged on the shell of described electric wheelchair tester, and it is a USB interface, and it connects computing machine or described expansion module by serial data transmission, carries out exchanges data;
One optoelectronic switch interface, it is arranged on described electric wheelchair tester shell, and it is row's needle interface, and it is in order to transfer to the metrical information of described movement parameter measurement module in described electric wheelchair tester.
6. the composite type electric wheelchair tester according to the arbitrary claim of claim 1-4, is characterized in that, described electrical quantity monitoring module comprises:
One voltage branch circuit, is provided with divider resistance, carries out stepping process, to meet the high-precision requirement of tester during tested voltage signal access;
One shunt, tested current signal is shunted by it, to improve the measuring accuracy of tested current signal;
One current amplification circuit, it comprises a High Precision Low Temperature and floats anti-tampering operational amplifier, in order to carry out secondary amplification to described shunt output current.
7. composite type electric wheelchair tester according to claim 1, it is characterized in that, described ultrasonic distance measuring module also comprises:
One adjuster bar, its two ends are connected with described electric wheelchair rear end support, it are provided with described ultrasonic sensing stadimeter;
One MCU processor, it is placed in described ultrasonic sensing stadimeter, and it processes the fluctuation information of measured electric wheelchair wheel, analyzes the situation of beating of described electric wheelchair wheel;
One serial ports data transmission circuit, the data timing after the process of described MCU processor is transferred in described processor by it.
8. composite type electric wheelchair tester according to claim 2, is characterized in that, described display operational module comprises:
One liquid crystal display circuit, the output information of described processor is transferred to a liquid crystal display and shows by it;
One LED circuit, the output information of described processor transfers on the function LED that is connected with described LED circuit by it;
One key circuit, it is by the operation push-button information transmission on tester to described processor.
9. the composite type electric wheelchair tester according to the arbitrary claim of claim 1-4, it is characterized in that, described tester also comprises a hardware watchdog, and it comprises a timer circuit, and is connected to the reset terminal of a processor connecting circuit.
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| CN201310059071.4A CN103149481B (en) | 2013-01-21 | 2013-02-26 | Comprehensive electrically propelled wheelchair tester |
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| CN201310059071.4A CN103149481B (en) | 2013-01-21 | 2013-02-26 | Comprehensive electrically propelled wheelchair tester |
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| CN103149481B true CN103149481B (en) | 2015-05-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111596084A (en) * | 2019-02-21 | 2020-08-28 | 广东省医疗器械质量监督检验所 | Device for monitoring wheel speed change of electric wheelchair through electromagnetic compatibility test |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109966064B (en) * | 2019-04-04 | 2021-02-19 | 北京理工大学 | Wheelchair with detection device and integrated with brain control and automatic driving and control method |
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| US5476429A (en) * | 1994-05-31 | 1995-12-19 | Packer Engineering Inc. | Treadmill for use with a wheelchair |
| CN102401738A (en) * | 2010-09-07 | 2012-04-04 | 上海理工大学 | Fatigue strength test device for parking brake of wheelchair |
| CN102629115A (en) * | 2012-03-21 | 2012-08-08 | 燕山大学 | Electric wheelchair controller |
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| CN111596084A (en) * | 2019-02-21 | 2020-08-28 | 广东省医疗器械质量监督检验所 | Device for monitoring wheel speed change of electric wheelchair through electromagnetic compatibility test |
Also Published As
| Publication number | Publication date |
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| CN103149481A (en) | 2013-06-12 |
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