CN204937200U - A kind of manual mode electric shopping cart - Google Patents
A kind of manual mode electric shopping cart Download PDFInfo
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- CN204937200U CN204937200U CN201520687147.2U CN201520687147U CN204937200U CN 204937200 U CN204937200 U CN 204937200U CN 201520687147 U CN201520687147 U CN 201520687147U CN 204937200 U CN204937200 U CN 204937200U
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Abstract
The utility model relates to shopping cart technique field, especially a kind of manual mode electric shopping cart.The utility model adopts the front of ultrasonic transduter to shopping cart to detect, and in time finding obstacle, drive motor can stop in time, avoids the phenomenon that shopping cart directly bumps against people or shelf; The utility model adopts the resistance strain gage that is arranged on handle place to the advance of shopping cart, turning left and turning right controls, be equivalent to press switch when people imposes grip time, when people stops shopping, be equivalent to again automatically press stop button, customer, without the need to deliberately going by drive motor switch, greatly improves the traveling comfort of shopping cart and intelligent; The utility model adopts pyroelectric infrared sensor circuit to detect handle, only customer detected, and after handle strain-gauge is stressed, driving wheel motor just can start to rotate, alleviate the burden of customer, when avoiding strain-gauge fault and there is no customer, the phenomenon that shopping cart runs automatically.
Description
Technical field
The utility model relates to shopping cart technique field, especially a kind of manual mode electric shopping cart.
Background technology
In recent years along with science and technology and social development, people more and more like the article required for the purchase of supermarket, such as daily living article, vegetables and fruit etc., sometimes customer can buy many commodity, at this moment, shopping cart inside supermarket just becomes the competent assistant of customer, pushes shopping cart and carries out doing shopping and alleviate the burden of customer greatly, make to stroll supermarket and become a kind of amusement and recreation activity.Shopping cart inside current supermarket generally or by manpower more, when do shopping more heavier time, shopping cart boosts the trouble also compared, and sometimes needs escalator to do shopping to different floor, now boosts and more bothers, more tired.Although some electronic shopping cart can alleviate the burden of people greatly, control more loaded down with trivial details, some the elderlys use inconvenience; And can not stop automatically when shopping cart runs into obstacle time, cause bumping against on shelf, this immature property of shopping cart result in shopping cart cannot large-area applications.When especially putting child on shopping cart, boost heavier, but also can not be careless, otherwise serious consequence can be caused.Therefore, for existing shopping cart, the traveling comfort not only when customer does shopping is not up to standard, and there is certain problem in the safety used yet.
Summary of the invention
Technical problem to be solved in the utility model is the technical deficiency for above-mentioned existence, provides a kind of manual mode electric shopping cart, and a kind of manual mode electric shopping cart structure is simple, and take up room little, installation cost is lower, and service expenditure is few, energy-conserving and environment-protective; The utility model adopts the front of ultrasonic transduter to shopping cart to detect, and in time finding obstacle, drive motor can stop in time, avoids shopping cart and directly bumps against people or shelf; The utility model have employed be arranged on handle place resistance strain gage to the advance of shopping cart, turning left and turning right controls, be equivalent to press switch when people imposes grip time, when people stops shopping, be equivalent to again automatically press stop button, customer is without the need to deliberately going by switch, greatly improve the traveling comfort of shopping cart like this, also greatly improve the intelligent of shopping cart; The utility model have employed pyroelectric infrared sensor circuit and detects handle place, only have when customer having been detected, and after handle strain-gauge is stressed, left driving wheel motor and right driving wheel motor just can start to rotate, alleviate the burden of customer, when avoiding strain-gauge fault and there is no customer, the phenomenon that shopping cart runs automatically.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: comprise shopping cart car body, left driving wheel, right drive wheel, flower wheel, handle supporting, handle, handle left part control circuit, handle right part control circuit, pyroelectric infrared sensor circuit, ultrasonic transduter, revolver motor circuit, rightly take turns motor circuit, single-chip minimum system, power supply, the top of shopping cart car body side is provided with handle supporting, and one end of handle supporting is bolted on shopping cart car body, and the other end is fixedly connected with handle, one end of handle is provided with handle left part control circuit, and the other end is provided with handle right part control circuit, at the center of the junction of handle supporting and shopping cart vehicle body side, pyroelectric infrared sensor circuit is installed, have rectangular slot in the side top center of installing pyroelectric infrared sensor circuit relative, in rectangular slot, ultrasonic transduter is installed, at the shopping cart vehicle bottom of handle side, two flower wheels are installed, are separately installed with left driving wheel and right drive wheel at the shopping cart vehicle bottom of ultrasonic transduter side, handle left part control circuit comprises the first resistance strain gage, the first wheatstone bridge circuit, the first amplifying circuit and an AD7810, first wheatstone bridge circuit comprises resistance R4, resistance R5, resistance R6, and the first amplifying circuit comprises slide-changing resistor device RV1, resistance R7, resistance R8, resistance R9, resistance R10 and a LM358, resistance R5, resistance R4, resistance R6 and the first resistance strain gage are forward connected into C/LOOP, resistance R5 is connected with the mouth of power supply with the common port of resistance R4, the common end grounding of resistance R6 and the first resistance strain gage, resistance R4 is connected with one end of slide rheostat RV1 with the common port of resistance R6, the other end of slide rheostat RV1 is connected with one end of resistance R8, the other end of resistance R8 is connected with the positive input of a LM358, resistance R5 is connected with one end of resistance R7 with the common port of the first resistance strain gage, the other end of resistance R7 is connected with the reverse input end of a LM358, the reverse input end of the one LM358 is also connected with mouth by resistance R10, and the positive input of a LM358 is also by resistance R9 ground connection, the mouth of the one LM358 is connected with the Vin+ pin of an AD7810, the SCLK pin of the one AD7810 connects the P1.0 pin of single-chip minimum system, DOUT pin connects the P1.1 pin of single-chip minimum system, and CONVST pin connects the P1.2 pin of single-chip minimum system, handle right part control circuit comprises the second resistance strain gage, the second wheatstone bridge circuit, the second amplifying circuit and the 2nd AD7810, second wheatstone bridge circuit comprises resistance R11, resistance R12, resistance R13, and the second amplifying circuit comprises slide-changing resistor device RV2, resistance R15, resistance R16, resistance R17, resistance R18 and the 2nd LM358, resistance R12, resistance R11, resistance R13 and the second resistance strain gage are forward connected into C/LOOP, resistance R11 is connected with the mouth of power supply with the common port of resistance R12, the common end grounding of resistance R13 and the second resistance strain gage, resistance R11 is connected with one end of slide rheostat RV2 with the common port of resistance R13, the other end of slide rheostat RV2 is connected with one end of resistance R16, the positive input of the other end the 2nd LM358 of resistance R16 connects, resistance R12 is connected with one end of resistance R15 with the common port of the second resistance strain gage, the other end of resistance R15 is connected with the reverse input end of the 2nd LM358, the reverse input end of the 2nd LM358 is also connected with mouth by resistance R18, and the positive input of the 2nd LM358 is also by resistance R17 ground connection, the mouth of the 2nd LM358 is connected with the Vin+ pin of the 2nd AD7810, the SCLK pin of the 2nd LM358 connects the P1.3 pin of single-chip minimum system, DOUT pin connects the P1.4 pin of single-chip minimum system, and CONVST pin connects the P1.5 pin of single-chip minimum system, revolver motor circuit comprises resistance R2, diode D1, aerotron Q1, relay R L1 and left driving wheel motor, and wherein the P0.0 pin of single-chip minimum system is connected with the base stage of aerotron Q1 by resistance R2, coil one end of relay R L1 is connected with the mouth of power supply, the other end is connected with the collecting electrode of aerotron Q1, inverse parallel diode D1 on the coil of relay R L1, the grounded emitter of aerotron Q1, one end, contact of relay R L1 is connected with the mouth of power supply, and the other end is connected with one end of left driving wheel motor, the other end ground connection of left driving wheel motor, right motor circuit of taking turns comprises resistance R3, diode D2, aerotron Q2, relay R L2 and right driving wheel motor, and wherein the P0.1 pin of single-chip minimum system is connected with the base stage of aerotron Q2 by R3, coil one end of relay R L2 is connected with the mouth of power supply, the other end is connected with the collecting electrode of aerotron Q2, inverse parallel diode D2 on the coil of relay R L2, the grounded emitter of aerotron Q2, one end, contact of relay R L2 is connected with the mouth of power supply, and the other end is connected with one end of right driving wheel motor, the other end ground connection of right driving wheel motor.
Further optimization the technical program, the TRIG pin of described ultrasonic transduter is connected with the P2.6 pin of single-chip minimum system, and the ECHO pin of ultrasonic transduter is connected with the P3.2 pin of single-chip minimum system; Pyroelectric infrared sensor circuit comprises pyroelectric infrared sensor, resistance R14, resistance R19, resistance R20 and aerotron Q3, the VCC pin of pyroelectric infrared sensor is connected with the mouth of power supply, the VCC pin of pyroelectric infrared sensor is also connected with one end of resistance R14, and the other end of resistance R14 is all connected with the P1.7 pin of the collecting electrode of aerotron Q3 and single-chip minimum system; The OUT pin of pyroelectric infrared sensor is connected with one end of resistance R19, and the other end of resistance R19 is connected with the base stage of aerotron Q3; One end of resistance R20 is connected with the base stage of aerotron Q3, other end ground connection; The GND pin ground connection of pyroelectric infrared sensor.
Further optimization the technical program, described left driving wheel motor is connected with left driving wheel and right drive wheel by belt conveyor or gear with right driving wheel motor.
Further optimization the technical program, described power acquisition storage battery, exportable 12V and 5V vdc, the coil that power supply is relay R L1, the coil of relay R L2, left driving wheel motor and right driving wheel motor provide 12V voltage, and power supply is ultrasonic transduter, single-chip minimum system, an AD7810, the 2nd AD7810 and pyroelectric infrared sensor provide 5V burning voltage.
Further optimization the technical program, described ultrasonic transduter adopts model to be the sensor of HC-SR04, and pyroelectric infrared sensor adopts model to be the sensor of LHI878.
Compared with prior art, the utility model has the following advantages: 1, a kind of manual mode electric shopping cart structure is simple, and take up room little, installation cost is low, and service expenditure is few, and consumes power is few, energy-conserving and environment-protective, and traveling comfort and intelligently have great raising; 2, the utility model adopts the front of ultrasonic transduter to shopping cart to detect, and in time finding obstacle, drive motor can stop in time, avoids the phenomenon that shopping cart directly bumps against people or shelf; 3, the utility model have employed be arranged on handle place resistance strain gage to the advance of shopping cart, turning left and turning right controls, be equivalent to press switch when people imposes grip time, when people stops shopping, be equivalent to again automatically press stop button, customer is without the need to deliberately going by drive motor switch, greatly improve the traveling comfort of shopping like this, also greatly improve the intelligent of shopping cart; 4, the utility model have employed pyroelectric infrared sensor circuit and detects handle place, only have when customer having been detected, and after handle strain-gauge is stressed, left driving wheel motor and right driving wheel motor just can start to rotate, alleviate the burden of customer, when avoiding strain-gauge fault and there is no customer, the phenomenon that shopping cart runs automatically.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of manual mode electric shopping cart.
Fig. 2 is a kind of front view of manual mode electric shopping cart.
Fig. 3 is a kind of circuit structure diagram of manual mode electric shopping cart.
Fig. 4 is a kind of circuit diagram of manual mode electric shopping cart.
In figure: 1, shopping cart car body; 2, left driving wheel; 3, right drive wheel; 4, flower wheel; 5, handle supporting; 6, handle; 7, handle left part control circuit; 701, the first resistance strain gage; 702, the first wheatstone bridge circuit; 703, the first amplifying circuit; 8, handle right part control circuit; 801, the second resistance strain gage; 802, the second wheatstone bridge circuit; 803, the second amplifying circuit 9, pyroelectric infrared sensor circuit; 901, pyroelectric infrared sensor; 10, ultrasonic transduter; 11, revolver motor circuit; 1101, left driving wheel motor; 12, rightly motor circuit is taken turns; 1201, right driving wheel motor; 13, single-chip minimum system; 14, power supply.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with detailed description of the invention also with reference to accompanying drawing, the utility model is further described.Should be appreciated that, these describe just exemplary, and do not really want to limit scope of the present utility model.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present utility model.
Detailed description of the invention one: shown in composition graphs 1-4, a kind of manual mode electric shopping cart comprises shopping cart car body 1, left driving wheel 2, right drive wheel 3, flower wheel 4, handle supporting 5, handle 6, handle left part control circuit 7, handle right part control circuit 8, pyroelectric infrared sensor circuit 9, ultrasonic transduter 10, revolver motor circuit 11, rightly takes turns motor circuit 12, single-chip minimum system 13, power supply 14, the top of shopping cart car body 1 side is provided with handle supporting 5, and one end of handle supporting 5 is bolted on shopping cart car body 1, and the other end is fixedly connected with handle 6, one end of handle 6 is provided with handle left part control circuit 7, and the other end is provided with handle right part control circuit 8, at the center of the junction of handle supporting 5 and shopping cart car body 1 side, pyroelectric infrared sensor circuit 9 is installed, have rectangular slot in the side top center of installing pyroelectric infrared sensor circuit 9 relative, ultrasonic transduter 10 is installed in rectangular slot, two flower wheels 4 are installed bottom the shopping cart car body 1 of handle 6 side, bottom the shopping cart car body 1 of ultrasonic transduter 10 side, are separately installed with left driving wheel 2 and right drive wheel 3, handle left part control circuit 7 comprises the first resistance strain gage 701, first wheatstone bridge circuit 702, first amplifying circuit 703 and AD7810, first wheatstone bridge circuit 702 comprises resistance R4, resistance R5, resistance R6, and the first amplifying circuit 703 comprises slide-changing resistor device RV1, resistance R7, resistance R8, resistance R9, resistance R10 and a LM358, resistance R5, resistance R4, resistance R6 and the first resistance strain gage 701 are forward connected into C/LOOP, resistance R5 is connected with the mouth of power supply 14 with the common port of resistance R4, the common end grounding of resistance R6 and the first resistance strain gage 701, resistance R4 is connected with one end of slide rheostat RV1 with the common port of resistance R6, the other end of slide rheostat RV1 is connected with one end of resistance R8, the other end of resistance R8 is connected with the positive input of a LM358, resistance R5 is connected with one end of resistance R7 with the common port of the first resistance strain gage 701, the other end of resistance R7 is connected with the reverse input end of a LM358, the reverse input end of the one LM358 is also connected with mouth by resistance R10, and the positive input of a LM358 is also by resistance R9 ground connection, the mouth of the one LM358 is connected with the Vin+ pin of an AD7810, the SCLK pin of the one AD7810 connects the P1.0 pin of single-chip minimum system 13, DOUT pin connects the P1.1 pin of single-chip minimum system 13, and CONVST pin connects the P1.2 pin of single-chip minimum system 13, handle right part control circuit 8 comprises the second resistance strain gage 801, second wheatstone bridge circuit 802, second amplifying circuit 803 and the 2nd AD7810, second wheatstone bridge circuit 802 comprises resistance R11, resistance R12, resistance R13, and the second amplifying circuit 803 comprises slide-changing resistor device RV2, resistance R15, resistance R16, resistance R17, resistance R18 and the 2nd LM358, resistance R12, resistance R11, resistance R13 and the second resistance strain gage 801 are forward connected into C/LOOP, resistance R11 is connected with the mouth of power supply 14 with the common port of resistance R12, the common end grounding of resistance R13 and the second resistance strain gage 801, resistance R11 is connected with one end of slide rheostat RV2 with the common port of resistance R13, the other end of slide rheostat RV2 is connected with one end of resistance R16, the positive input of the other end the 2nd LM358 of resistance R16 connects, resistance R12 is connected with one end of resistance R15 with the common port of the second resistance strain gage 801, the other end of resistance R15 is connected with the reverse input end of the 2nd LM358, the reverse input end of the 2nd LM358 is also connected with mouth by resistance R18, and the positive input of the 2nd LM358 is also by resistance R17 ground connection, the mouth of the 2nd LM358 is connected with the Vin+ pin of the 2nd AD7810, the SCLK pin of the 2nd LM358 connects the P1.3 pin of single-chip minimum system 13, DOUT pin connects the P1.4 pin of single-chip minimum system 13, and CONVST pin connects the P1.5 pin of single-chip minimum system 13, revolver motor circuit 11 comprises resistance R2, diode D1, aerotron Q1, relay R L1 and left driving wheel motor 1101, and wherein the P0.0 pin of single-chip minimum system 13 is connected with the base stage of aerotron Q1 by resistance R2, coil one end of relay R L1 is connected with the mouth of power supply 14, the other end is connected with the collecting electrode of aerotron Q1, inverse parallel diode D1 on the coil of relay R L1, the grounded emitter of aerotron Q1, one end, contact of relay R L1 is connected with the mouth of power supply 14, and the other end is connected with one end of left driving wheel motor 1101, the other end ground connection of left driving wheel motor 1101, right motor circuit 12 of taking turns comprises resistance R3, diode D2, aerotron Q2, relay R L2 and right driving wheel motor 1201, and wherein the P0.1 pin of single-chip minimum system 13 is connected with the base stage of aerotron Q2 by R3, coil one end of relay R L2 is connected with the mouth of power supply 14, the other end is connected with the collecting electrode of aerotron Q2, inverse parallel diode D2 on the coil of relay R L2, the grounded emitter of aerotron Q2, one end, contact of relay R L2 is connected with the mouth of power supply 14, and the other end is connected with one end of right driving wheel motor 1201, the other end ground connection of right driving wheel motor 1201, the TRIG pin of ultrasonic transduter 10 is connected with the P2.6 pin of single-chip minimum system 13, and the ECHO pin of ultrasonic transduter 10 is connected with the P3.2 pin of single-chip minimum system 13, pyroelectric infrared sensor circuit 9 comprises pyroelectric infrared sensor 901, resistance R14, resistance R19, resistance R20 and aerotron Q3, the VCC pin of pyroelectric infrared sensor 901 is connected with the mouth of power supply 14, the VCC pin of pyroelectric infrared sensor 901 is also connected with one end of resistance R14, and the other end of resistance R14 is all connected with the P1.7 pin of the collecting electrode of aerotron Q3 and single-chip minimum system 13, the OUT pin of pyroelectric infrared sensor 901 is connected with one end of resistance R19, and the other end of resistance R19 is connected with the base stage of aerotron Q3, one end of resistance R20 is connected with the base stage of aerotron Q3, other end ground connection, the GND pin ground connection of pyroelectric infrared sensor 901, left driving wheel motor 1101 is connected with left driving wheel 2 and right drive wheel 3 by belt conveyor or gear with right driving wheel motor 1201, power supply 14 adopts storage battery, exportable 12V and 5V vdc, the coil that power supply 14 is relay R L1, the coil of relay R L2, left driving wheel motor 1101 and right driving wheel motor 1201 provide 12V voltage, and power supply 14 is ultrasonic transduter 10, single-chip minimum system 13, an AD7810, the 2nd AD7810 and pyroelectric infrared sensor 901 provide 5V burning voltage, ultrasonic transduter 10 adopts model to be the sensor of HC-SR04, and pyroelectric infrared sensor 901 adopts model to be the sensor of LHI878.
Principle of work is introduced: when needs use shopping cart time, customer's opening power 14 switch, now the coil of power supply 14 coil that is relay R L1, relay R L2, left driving wheel motor 1101 and right driving wheel motor 1201 provide 12V voltage, power supply 14 is ultrasonic transduter 10, single-chip minimum system 13, an AD7810, the 2nd AD7810 and pyroelectric infrared sensor 901 provide 5V burning voltage, power supply 14 adopts storage battery, exportable 12V and 5V vdc, can also charge to it when storage battery does not have electric time.
Advancement function: in time wishing that shopping cart advances, customer holds handle left part control circuit 7 and the handle right part control circuit 8 at handle 6 place respectively with right-hand man, owing to being travel forward, now the grip of customer to handle 6 is suitable, the now deformation that produces of the first resistance strain gage 701 and the second resistance strain gage 801 is also suitable, even if there is certain error, but in certain scope; Through the conversion of the amplification of the first amplifying circuit 703, second amplifying circuit 803 and an AD7810, the 2nd AD7810 conv, input to single-chip minimum system 13, single-chip minimum system 13 exports high level by P0.0 pin and makes aerotron Q1 conducting, and the contact change-over of relay R L1 makes left driving wheel motor 1101 obtain electric and rotate; In like manner single-chip minimum system 13 exports high level by P0.1 pin and makes aerotron Q2 conducting, the contact change-over of relay R L2 makes right driving wheel motor 1201 obtain electric and rotate, under the drive of left driving wheel motor 1101 and right driving wheel motor 1201, shopping cart runs forward, and customer only need impose certain grip to handle.
Left-hand rotation function: in time wishing that shopping cart turns left, customer only needs left hand to hold with a firm grip the handle left part control circuit 7 at handle 6 place, the right hand holds handle right part control circuit 8, because left hand handle left part control circuit 7 applied force of holding with a firm grip is greater than the right hand and holds handle right part control circuit 8 applied force, the deformation that the deformation that now the first resistance strain gage 701 produces also can produce much larger than the second resistance strain gage 801; Through the conversion of the amplification of the first amplifying circuit 703, second amplifying circuit 803 and an AD7810, the 2nd AD7810 conv, input to single-chip minimum system 13, the difference of two force value that single-chip minimum system 13 obtains is greater than setting value, now single-chip minimum system 13 makes aerotron Q1 turn off by P0.0 pin output low level, and the contact change-over of relay R L1 makes left driving wheel motor 1101 dead electricity and stops operating; In like manner single-chip minimum system 13 exports high level by P0.1 pin and makes aerotron Q2 conducting, the contact change-over of relay R L2 makes right driving wheel motor 1201 obtain electric and rotate, because left driving wheel motor 1101 does not turn, right driving wheel motor 1201 rotates, and makes shopping cart start to turn left; When without the need to turning again time, imposing sizable power and moving on.
Right-hand rotation function: in time wishing that shopping cart is turned right, only need the right hand to hold with a firm grip handle right part control circuit 8, left hand holds handle left part control circuit 7 can realize right-hand rotation function.
Should be understood that, above-mentioned detailed description of the invention of the present utility model only for exemplary illustration or explain principle of the present utility model, and is not formed restriction of the present utility model.Therefore, any amendment made when not departing from spirit and scope of the present utility model, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.In addition, the utility model claims be intended to contain fall into claims scope and border or this scope and border equivalents in whole change and modification.
Claims (5)
1. a manual mode electric shopping cart, is characterized in that: comprise shopping cart car body (1), left driving wheel (2), right drive wheel (3), flower wheel (4), handle supporting (5), handle (6), handle left part control circuit (7), handle right part control circuit (8), pyroelectric infrared sensor circuit (9), ultrasonic transduter (10), revolver motor circuit (11), rightly take turns motor circuit (12), single-chip minimum system (13), power supply (14), the top of shopping cart car body (1) side is provided with handle supporting (5), one end of handle supporting (5) is bolted on shopping cart car body (1), and the other end is fixedly connected with handle (6), one end of handle (6) is provided with handle left part control circuit (7), and the other end is provided with handle right part control circuit (8), at the center of the junction of handle supporting (5) and shopping cart car body (1) side, pyroelectric infrared sensor circuit (9) is installed, have rectangular slot in the side top center of installing pyroelectric infrared sensor circuit (9) relative, ultrasonic transduter (10) is installed in rectangular slot, shopping cart car body (1) bottom in handle (6) side is provided with two flower wheels (4), and shopping cart car body (1) bottom in ultrasonic transduter (10) side is separately installed with left driving wheel (2) and right drive wheel (3), handle left part control circuit (7) comprises the first resistance strain gage (701), the first wheatstone bridge circuit (702), the first amplifying circuit (703) and an AD7810, first wheatstone bridge circuit (702) comprises resistance R4, resistance R5, resistance R6, and the first amplifying circuit (703) comprises slide-changing resistor device RV1, resistance R7, resistance R8, resistance R9, resistance R10 and a LM358, resistance R5, resistance R4, resistance R6 and the first resistance strain gage (701) are forward connected into C/LOOP, resistance R5 is connected with the mouth of power supply (14) with the common port of resistance R4, the common end grounding of resistance R6 and the first resistance strain gage (701), resistance R4 is connected with one end of slide rheostat RV1 with the common port of resistance R6, the other end of slide rheostat RV1 is connected with one end of resistance R8, the other end of resistance R8 is connected with the positive input of a LM358, resistance R5 is connected with one end of resistance R7 with the common port of the first resistance strain gage (701), the other end of resistance R7 is connected with the reverse input end of a LM358, the reverse input end of the one LM358 is also connected with mouth by resistance R10, and the positive input of a LM358 is also by resistance R9 ground connection, the mouth of the one LM358 is connected with the Vin+ pin of an AD7810, the SCLK pin of the one AD7810 connects the P1.0 pin of single-chip minimum system (13), DOUT pin connects the P1.1 pin of single-chip minimum system (13), and CONVST pin connects the P1.2 pin of single-chip minimum system (13), handle right part control circuit (8) comprises the second resistance strain gage (801), the second wheatstone bridge circuit (802), the second amplifying circuit (803) and the 2nd AD7810, second wheatstone bridge circuit (802) comprises resistance R11, resistance R12, resistance R13, and the second amplifying circuit (803) comprises slide-changing resistor device RV2, resistance R15, resistance R16, resistance R17, resistance R18 and the 2nd LM358, resistance R12, resistance R11, resistance R13 and the second resistance strain gage (801) are forward connected into C/LOOP, resistance R11 is connected with the mouth of power supply (14) with the common port of resistance R12, the common end grounding of resistance R13 and the second resistance strain gage (801), resistance R11 is connected with one end of slide rheostat RV2 with the common port of resistance R13, the other end of slide rheostat RV2 is connected with one end of resistance R16, the positive input of the other end the 2nd LM358 of resistance R16 connects, resistance R12 is connected with one end of resistance R15 with the common port of the second resistance strain gage (801), the other end of resistance R15 is connected with the reverse input end of the 2nd LM358, the reverse input end of the 2nd LM358 is also connected with mouth by resistance R18, and the positive input of the 2nd LM358 is also by resistance R17 ground connection, the mouth of the 2nd LM358 is connected with the Vin+ pin of the 2nd AD7810, the SCLK pin of the 2nd LM358 connects the P1.3 pin of single-chip minimum system (13), DOUT pin connects the P1.4 pin of single-chip minimum system (13), and CONVST pin connects the P1.5 pin of single-chip minimum system (13), revolver motor circuit (11) comprises resistance R2, diode D1, aerotron Q1, relay R L1 and left driving wheel motor (1101), and wherein the P0.0 pin of single-chip minimum system (13) is connected with the base stage of aerotron Q1 by resistance R2, coil one end of relay R L1 is connected with the mouth of power supply (14), the other end is connected with the collecting electrode of aerotron Q1, inverse parallel diode D1 on the coil of relay R L1, the grounded emitter of aerotron Q1, one end, contact of relay R L1 is connected with the mouth of power supply (14), and the other end is connected with the one end of left driving wheel motor (1101), the other end ground connection of left driving wheel motor (1101), right motor circuit (12) of taking turns comprises resistance R3, diode D2, aerotron Q2, relay R L2 and right driving wheel motor (1201), and wherein the P0.1 pin of single-chip minimum system (13) is connected with the base stage of aerotron Q2 by R3, coil one end of relay R L2 is connected with the mouth of power supply (14), the other end is connected with the collecting electrode of aerotron Q2, inverse parallel diode D2 on the coil of relay R L2, the grounded emitter of aerotron Q2, one end, contact of relay R L2 is connected with the mouth of power supply (14), and the other end is connected with the one end of right driving wheel motor (1201), the other end ground connection of right driving wheel motor (1201).
2. a kind of manual mode electric shopping cart according to claim 1, it is characterized in that: the TRIG pin of ultrasonic transduter (10) is connected with the P2.6 pin of single-chip minimum system (13), the ECHO pin of ultrasonic transduter (10) is connected with the P3.2 pin of single-chip minimum system (13); Pyroelectric infrared sensor circuit (9) comprises pyroelectric infrared sensor (901), resistance R14, resistance R19, resistance R20 and aerotron Q3, the VCC pin of pyroelectric infrared sensor (901) is connected with the mouth of power supply (14), the VCC pin of pyroelectric infrared sensor (901) is also connected with resistance R14 one end, and the other end of resistance R14 is all connected with the P1.7 pin of the collecting electrode of aerotron Q3 and single-chip minimum system (13); The OUT pin of pyroelectric infrared sensor (901) is connected with one end of resistance R19, and the other end of resistance R19 is connected with the base stage of aerotron Q3; One end of resistance R20 is connected with the base stage of aerotron Q3, other end ground connection; The GND pin ground connection of pyroelectric infrared sensor (901).
3. a kind of manual mode electric shopping cart according to claim 1, is characterized in that: left driving wheel motor (1101) is connected with left driving wheel (2) and right drive wheel (3) by belt conveyor or gear with right driving wheel motor (1201).
4. a kind of manual mode electric shopping cart according to claim 1 and 2, it is characterized in that: power supply (14) adopts storage battery, exportable 12V and 5V vdc, the coil that power supply (14) is relay R L1, the coil of relay R L2, left driving wheel motor (1101) and right driving wheel motor (1201) provide 12V voltage, and power supply (14) is ultrasonic transduter (10), single-chip minimum system (13), an AD7810, the 2nd AD7810 and pyroelectric infrared sensor (901) provide 5V burning voltage.
5. a kind of manual mode electric shopping cart according to claim 1 and 2, it is characterized in that: ultrasonic transduter (10) adopts model to be the sensor of HC-SR04, pyroelectric infrared sensor (901) adopts model to be the sensor of LHI878.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520687147.2U CN204937200U (en) | 2015-09-07 | 2015-09-07 | A kind of manual mode electric shopping cart |
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| CN201520687147.2U CN204937200U (en) | 2015-09-07 | 2015-09-07 | A kind of manual mode electric shopping cart |
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| CN204937200U true CN204937200U (en) | 2016-01-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105711633A (en) * | 2015-09-07 | 2016-06-29 | 罗文凤 | Hand-controlled type electric shopping cart |
| CN109649360A (en) * | 2019-01-18 | 2019-04-19 | 佛山职业技术学院 | A kind of method and system of automobile evacuation pedestrian |
-
2015
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105711633A (en) * | 2015-09-07 | 2016-06-29 | 罗文凤 | Hand-controlled type electric shopping cart |
| CN105711633B (en) * | 2015-09-07 | 2017-11-24 | 郑普照 | A kind of manual mode electric shopping cart |
| CN109649360A (en) * | 2019-01-18 | 2019-04-19 | 佛山职业技术学院 | A kind of method and system of automobile evacuation pedestrian |
| CN109649360B (en) * | 2019-01-18 | 2024-01-30 | 佛山职业技术学院 | Method and system for avoiding pedestrians by automobile |
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| CF01 | Termination of patent right due to non-payment of annual fee |