CN109672369A - A kind of matrix drive device suitable for automatic vending machine cargo path motor - Google Patents
A kind of matrix drive device suitable for automatic vending machine cargo path motor Download PDFInfo
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- CN109672369A CN109672369A CN201910088028.8A CN201910088028A CN109672369A CN 109672369 A CN109672369 A CN 109672369A CN 201910088028 A CN201910088028 A CN 201910088028A CN 109672369 A CN109672369 A CN 109672369A
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- 239000011159 matrix material Substances 0.000 title claims abstract description 26
- 238000005070 sampling Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 17
- 239000013642 negative control Substances 0.000 claims abstract description 13
- 239000007858 starting material Substances 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000013641 positive control Substances 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/68—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more DC dynamo-electric motors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Direct Current Motors (AREA)
- Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
Abstract
The invention discloses a kind of matrix drive devices suitable for automatic vending machine cargo path motor, including current detection module, motor anode control circuit module, electrode negative control circuit module, main control chip, power module and communication module；Power module, communication module, current detection module, motor anode control circuit module, electrode negative control circuit module are connect with main control chip respectively；Current detection module uses current detecting chip, current detecting chip is divided by series resistance realizes that current detecting is converted into voltage detecting, main control chip obtains specific voltage value by AD sampling, and main control chip processing voltage value obtains motor operating current, and then judges the operating status of motor；Main control chip handles the instruction that host computer is sent, and is instructed according to host computer, controls motor, and monitor the operating status of motor, reports instruction performance to host computer.By the above-mentioned means, the present invention can be safe and stable, inexpensive realization cargo path motor matrix driving.
Description
Technical field
The present invention relates to automatic vending machine fields, more particularly to a kind of matrix suitable for automatic vending machine cargo path motor
Driving device.
Background technique
Automatic vending machine is a kind of completely new retailing form, and the micro supermarket for the 24 HOUR ACCESS that is otherwise known as, it is not
It is limited by time, place, manpower can be saved, facilitate transaction.Mass production, a large amount of consumption and consumption mode and sales environment
Variation, the type of merchandize that automatic vending machine can be sold is more and more.Therewith, the cargo path of the confidential control of automatic vending is increasingly
More, the driving of cargo path motor requires also higher and higher.The matrix driving of how safe and stable, inexpensive realization cargo path motor
It is technical problems to be solved in industry.Overcurrent protection, micro process in the specific design for relating generally to driving switch, motor operation
The selection etc. of device.
Currently, cargo path motor mainstream driving method is matrix driving, as shown in Fig. 1 cargo path electrical machine matrix driving structure figure,
Including X item transverse direction conducting wire, Y item longitudinal direction conducting wire, X*Y motor, X+Y driving switch, microprocessor and power supply；Each motor
The two poles of the earth be connected respectively on X item transverse direction conducting wire and Y item longitudinal direction conducting wire；One end of every longitudinal conducting wire is separately connected a driving
It is connect after switch with power supply anode；One end of every lateral conducting wire is connected to ground after being separately connected a driving switch；It is micro-
Processor and driving switch signal interaction, realize the closure and opening of driving switch, only when the driving in X and Y two lines is opened
Pass is closed at, and motor could work normally.
In order to preferably realize the matrix driving of cargo path motor, a kind of existing driving circuit, including single-chip microcontroller, sampling resistor
Group, comparator, dip-switch package, communication chip, photoelectrical coupler, NMOS tube, PMOS tube, motor etc., particular circuit configurations figure
As shown in Figure 2；H1 ... H10 connection motor anode, L1 ... L10 connection electrode negative；Single-chip microcontroller is used for Message Processing, motor driven
Control；Sampling resistor group, the sampling resistor group include more than one sampling resistor, each sampling resistor respectively with corresponding motor
It is connected, for sending the signal for indicating the motor present operating voltage to comparator；Comparator, the comparator respectively with single-chip microcontroller
It is connected with sampling resistor group, for sending the signal for indicating that the operating current of specified motor is excessive to single-chip microcontroller；Dip-switch package,
The dip-switch package includes more than one toggle switch, and dip-switch package is connected with single-chip microcontroller, according to the opening and closing shape of each switch
State sets the address of the driving plate of corresponding motor；Communication chip, the communication chip respectively with single-chip microcontroller and external equipment phase
Even, for the communication between single-chip microcontroller and external equipment.Single-chip microcontroller connects the negative of each motor by photoelectrical coupler with NMOS tube
Pole connects the anode of each motor by photoelectrical coupler with PMOS tube；Only when the metal-oxide-semiconductor of the anode of motor and cathode is all connected
When, motor is just started to work.
The above circuit is used for automatic vending machine, first is that automation function can not be fully achieved, is realized and is driven with dip-switch package
The selection of movable plate, is unfavorable for Automatic control of single chip microcomputer；Second is that with metal-oxide-semiconductor, comparator, sampling resistor group, optocoupler electrical combination
It is excessively cumbersome, it is unfavorable for reducing cost.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of matrix drivings suitable for automatic vending machine cargo path motor
Device optimizes the control circuit of motor positive and negative anodes, realizes that single-chip microcontroller controls the full automation of cargo path motor；It optimizes
Motor protection circuit reduces the quantity of sampling resistor, eliminates comparator, realizes overcurrent in motor operation with lower cost
Safeguard function；The matrix driving of realization cargo path motor that can be safe and stable, inexpensive.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: it provides a kind of suitable for automatic vending
The matrix drive device of machine cargo path motor, comprising: current detection module, motor anode control circuit module, electrode negative control
Circuit module, main control chip, power module and communication module；The power module, communication module, current detection module, motor
Positive control circuit module, electrode negative control circuit module are connect with main control chip respectively；The current detection module uses
Current detecting chip, current detecting chip is divided by series resistance realizes that current detecting is converted into voltage detecting, main control chip
Specific voltage value is obtained by AD sampling, main control chip processing voltage value obtains motor operating current, and then judges the fortune of motor
Row state；The motor anode control circuit module is controlled using motor drive ic, and each motor drive ic provides four
Can independent control 1/2H bridge starter, for each channel output driver channel by being carried out in the configuration of 1/2H bridge
The N channel power MOSFET of configuration is formed；The electrode negative control circuit module includes NPN type triode Q3, three pole of positive-negative-positive
Pipe Q2 and NMOS transistor Q1；The instruction that the main control chip processing host computer is sent, instructs according to host computer, controls motor,
And the operating status of motor is monitored, instruction performance is reported to host computer；The power module is that 5V turns 3.3V module, power supply
Module provides power supply for main control chip, and power module provides reference voltage for current detecting chip, and power module is motor driven
Chip provides high level.
Further, current divider resistance R1 is connected on the current detecting chip, current detecting chip is exported equipped with OUT
End, the main control chip are equipped with AD sampling channel, and current detecting chip passes through AD sampling channel for data by OUT output end
It is transferred to main control chip；The current detecting chip can be examined in -4V to the 80V wide common-mode voltage range independently of supply voltage
The pressure drop on current divider resistance R1 is surveyed, and output voltage will not be made to generate biggish transition and restore ripple accordingly, detection knot
Fruit passes to the AD sampling channel of main control chip, handles to obtain motor operating current through main control chip by OUT output end, into
And judge the operating status of motor.
Further, the communication module is RS485 module, and RS485 module realizes the communication of main control chip and host computer.
The beneficial effects of the present invention are: realizing that single-chip microcontroller matrix drives present invention optimizes the control circuit of motor positive and negative anodes
The independent of the dynamic each column of every a line automatically controls, without increasing additional driving plate selection circuit；Optimize motor protection electricity
Road is carried out AD sampling by MCU, is only needed a sampling resistor using the combination of sampling resistor and current detecting chip.It reduces
The quantity of sampling resistor, eliminates comparator, quantify current detecting result can more accurate, realizes electricity with lower cost
The safeguard function of overcurrent in machine operation.
Detailed description of the invention
Fig. 1 is cargo path electrical machine matrix driving framework schematic diagram；
Fig. 2 is cargo path electrical machine matrix driving circuit structure schematic diagram in the prior art；
Fig. 3 is a kind of system architecture figure of the matrix drive device suitable for automatic vending machine cargo path motor of the present invention；
Fig. 4 is a kind of current detection module suitable for the matrix drive device of automatic vending machine cargo path motor of the present invention
Structural schematic diagram；
Fig. 5 is a kind of control of the motor anode suitable for the matrix drive device of automatic vending machine cargo path motor electricity of the present invention
The structural schematic diagram of road module；
Fig. 6 is a kind of control of the electrode negative suitable for the matrix drive device of automatic vending machine cargo path motor electricity of the present invention
The structural schematic diagram of road module.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Fig. 1 to Fig. 6 is please referred to, the embodiment of the present invention includes:
A kind of matrix drive device suitable for automatic vending machine cargo path motor, comprising: current detection module, motor anode
Control circuit module, electrode negative control circuit module, main control chip, power module and communication module；The power module leads to
Believe that module, current detection module, motor anode control circuit module, electrode negative control circuit module connect with main control chip respectively
It connects；
The power module is that 5V turns 3.3V module, and power module provides power supply for main control chip, and power module is electric current
Detection chip provides reference voltage, and power module provides high level for motor drive ic；
The communication module is RS485 module, realizes the communication of cargo path motor control panel and host computer；
The electric current when current detection module is mainly for detection of motor work, is divided by series resistance and realizes electric current
Detection is converted into voltage detecting, and main control chip obtains specific voltage value by AD sampling；The current detection module uses electric current
Detection chip, a sampling resistor and one piece of current detecting chip instead of the sampling resistor in each branch of the prior art and compare
Device；As shown in Figure 4, when motor operation, detection chip can be in -4V to the 80V wide common-mode voltage range independently of supply voltage
The pressure drop on current divider resistance R1 is detected, and output voltage will not be made to generate biggish transition and restore ripple accordingly, is detected
As a result by OUT output end, the AD sampling channel of main control MCU is passed to, handles to obtain motor operating current through MCU, and then sentence
The operating status of power machine；
The motor anode control circuit module is controlled using motor drive ic, and each motor drive ic can provide
Four can independent control 1/2H bridge starter, for each channel output driver channel by the configuration of 1/2H bridge
Configured N channel power MOSFET composition, motor drive ic support overcurrent protection, short-circuit protection, under-voltage locking and
Overheat protector；As shown in Figure 5, motor anode control circuit module is mainly made of motor control chip, 24V power supply, MCU_
EN1 ... MCU_EN4 is motor control chip input control signal, and MCU_SignalH1 is that motor anode controls signal, motor
H1 ... motor H4 is motor control chip output signal, four column control signals of homography driving, when MCU_EN signal is effective
When, motor control chip is changed the output level of motor 1 ... motor 4, to control square by the control of MCU_SignalH1 signal
The closure and disconnection of the 24V power supply of battle array starting respective column motor；
The electrode negative control circuit module is formed using triode and metal-oxide-semiconductor, controls company's make and break of electrode negative
It opens；As shown in Figure 6, electrode negative control circuit module is mainly by Q3 (NPN), Q2 (PNP) triode and Q1 (NMOS) Guan Zucheng,
24V power supply, MCU_SignalL1 are that electrode negative controls signal, and 1 row of motor L1 homography driving controls signal, works as MCU_
When SignalL1 signal is effective, triode Q3 conducting, R4, R5 partial pressure leads Q2 base stage (B) voltage lower than emitter (E) voltage Q2
It is logical, since the partial pressure of R2, R1 act on, make grid (G) voltage 12V of NMOS tube, the source electrode (S) of NMOS tube is grounded, at this time
NMOS transistor conduction, motor L1 ground connection, matrix driving correspond to the cathode ground connection of row motor；
The instruction that the main control chip processing host computer is sent, instructs according to host computer, controls motor, and monitor motor
Operating status reports instruction performance to host computer.
The each column MCU of every a line of matrix driving of the present invention can be controlled separately, and motor driven is selected in the control of motor anode
Chip, each chip provide 4 1/2H bridge starters, No. four motors can be driven, and keep circuit more succinct reliable；Electrode negative
The logic control circuit formed using diode, triode, metal-oxide-semiconductor, controls the ground connection of motor；Current detection function is using sampling
The combination of resistance and current detecting chip carries out AD sampling by MCU, quantify current detecting result can more accurate.It can pacify
Entirely, stablize, the matrix driving of the realization cargo path motor of low cost.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (3)
1. a kind of matrix drive device suitable for automatic vending machine cargo path motor characterized by comprising current detecting mould
Block, motor anode control circuit module, electrode negative control circuit module, main control chip, power module and communication module；It is described
Power module, communication module, current detection module, motor anode control circuit module, electrode negative control circuit module difference
It is connect with main control chip；The current detection module uses current detecting chip, and current detecting chip is divided by series resistance
Realize that current detecting is converted into voltage detecting, main control chip obtains specific voltage value by AD sampling, and main control chip handles voltage
Value obtains motor operating current, and then judges the operating status of motor；The motor anode control circuit module is driven using motor
Dynamic chip controls, each motor drive ic provide four can independent control 1/2H bridge starter, for the defeated of each channel
Driver channels are made of the N channel power MOSFET configured in a 1/2H bridge configuration out；The electrode negative control
Circuit module processed includes NPN type triode Q3, PNP type triode Q2 and NMOS transistor Q1；The main control chip processing is upper
The instruction that machine is sent, instructs according to host computer, controls motor, and monitor the operating status of motor, reports and instructed to host computer
At situation；The power module is that 5V turns 3.3V module, and power module provides power supply for main control chip, and power module is electric current inspection
It surveys chip and reference voltage is provided, power module provides high level for motor drive ic.
2. a kind of matrix drive device suitable for automatic vending machine cargo path motor according to claim 1, feature exist
In: current divider resistance R1 is connected on the current detecting chip, current detecting chip is equipped with OUT output end, the master control core
On piece is equipped with AD sampling channel, and current detecting chip transfers data to master control core by AD sampling channel by OUT output end
Piece；The current detecting chip can detect current divider resistance in -4V to the 80V wide common-mode voltage range independently of supply voltage
Pressure drop on R1, and output voltage will not be made to generate biggish transition and restore ripple accordingly, testing result is exported by OUT
End, passes to the AD sampling channel of main control chip, handles to obtain motor operating current through main control chip, and then judge the fortune of motor
Row state.
3. a kind of matrix drive device suitable for automatic vending machine cargo path motor according to claim 1, feature exist
In: the communication module is RS485 module, and RS485 module realizes the communication of main control chip and host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088028.8A CN109672369B (en) | 2019-01-29 | 2019-01-29 | Matrix driving device suitable for goods channel motor of vending machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088028.8A CN109672369B (en) | 2019-01-29 | 2019-01-29 | Matrix driving device suitable for goods channel motor of vending machine |
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| Publication Number | Publication Date |
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| CN109672369A true CN109672369A (en) | 2019-04-23 |
| CN109672369B CN109672369B (en) | 2021-08-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110619707A (en) * | 2019-09-04 | 2019-12-27 | 浪潮金融信息技术有限公司 | Be applied to automatic vending machine's combination spring goods way |
| CN110647069A (en) * | 2019-09-04 | 2020-01-03 | 浪潮金融信息技术有限公司 | Intelligent vending machine goods channel motor logic control scheme |
| CN115125662A (en) * | 2022-08-02 | 2022-09-30 | 浙江恒强科技股份有限公司 | A matrix drive needle selection method for glove machine |
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| CN115125662A (en) * | 2022-08-02 | 2022-09-30 | 浙江恒强科技股份有限公司 | A matrix drive needle selection method for glove machine |
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| CN109672369B (en) | 2021-08-17 |
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