CN109491228A - A kind of design method of pointer-type regional clock movement - Google Patents
A kind of design method of pointer-type regional clock movement Download PDFInfo
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- CN109491228A CN109491228A CN201811531606.2A CN201811531606A CN109491228A CN 109491228 A CN109491228 A CN 109491228A CN 201811531606 A CN201811531606 A CN 201811531606A CN 109491228 A CN109491228 A CN 109491228A
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- 238000013461 design Methods 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims abstract description 91
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 230000009347 mechanical transmission Effects 0.000 claims abstract description 6
- 239000007769 metal material Substances 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 22
- 230000008878 coupling Effects 0.000 claims description 20
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- 238000012937 correction Methods 0.000 claims description 6
- 230000005693 optoelectronics Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 5
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- 239000000203 mixture Substances 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 4
- 230000008713 feedback mechanism Effects 0.000 claims description 2
- 230000002618 waking effect Effects 0.000 claims description 2
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- 238000005265 energy consumption Methods 0.000 abstract description 3
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000001429 stepping effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001915 proofreading effect Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
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- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C11/00—Synchronisation of independently-driven clocks
- G04C11/04—Synchronisation of independently-driven clocks over a line
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- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R20/00—Setting the time according to the time information carried or implied by the radio signal
- G04R20/14—Setting the time according to the time information carried or implied by the radio signal the radio signal being a telecommunication standard signal, e.g. GSM
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- Electromechanical Clocks (AREA)
Abstract
The invention discloses a kind of design methods of pointer regional clock movement, are related to time keeping instrument technical field.The technical scheme is that a kind of design method of pointer-type regional clock movement, the concrete structure design of whole design and each matching component including machine core machine driven system, drive system and control system；The design of the machine core machine driven system is the metal clock movement using metal material, machine core is designed as 3 stepper motors, be connected the methods of sending and receiving by when needle tubing, minute hand pipe, the second hand pipe of gear drive and coaxial arrangement respectively, constitute the mechanical transmission mechanism that the three coaxial needle heart of clock movement Hour Minute Second rotates.The present invention have compared with prior art rotating torque it is big, can be widely used, signal covering surface is wide, without accessing all kinds of local area network, independent operating, low energy consumption, the substantive distinguishing features outstanding of low cost operation and significant progress.
Description
Technical field
The present invention relates to time keeping instrument design and its processing technique fields, more particularly, to a kind of pointer regional clock machine
The design method technical field of core.
Background technique
The quartz analog clock class product that can be used in indoor automatic correcting time occurred currently on the market mainly has 3
Major class:
The first kind: Local Area Network time service formula quartz clock, this kind of clock mainly pass through the standard that networking receives master clock or ntp server etc.
Time, network have various forms, most commonly 485 networks, and Ethernet LAN or CAN network etc., this kind of clock is most
Greatly the disadvantage is that the independent utility occasion of not network cannot be adapted to, and individually arrangement communication line is needed, is mainly used in and does
Public building, the large size occasion such as hospital, railway, square.
Second class: GPS time service clock, this kind of clock are generally carried out by comparing long outdoor use GPS antenna receiving time information
When school, it is also possible to receive the GPS master clock server info in network using various networks, the clock of GPS time service at this time is practical to be exactly
The Local Area Network time service clock of the first kind.The disadvantage of this kind of quartz clock: the GPS master clock system sheet in time service clock itself or network
Body is needed in outdoor erection GPS antenna, and even in non-network independent utility occasion, time service clock itself have to also be connected to room
Outside antenna is highly detrimental to construct and install especially in the occasion to have completed.
Third class: radio wave clock, this kind of clock receive the electric wave signal calibration clock of wireless long-wave time service radio station transmitting, and can be with
Battery power supply, but disadvantage is, the holding wireless long-wave time service radio station of only one foreign countries in China, the model of radio station covering
Enclose very unsound, even if covered area, the signal in building is also very faint, and frequently resulting in cannot many times connect
By the standard time of radio wave clock, strict demand is equipped with to locating address bit.And its electric wave decoding circuit is complicated, decodes numerous
It is trivial, the localization criteria time is takeed a long time, is easy mechanically and electrically road failure, machine core must be replaced entirely once failure
Machine core, cost are very high.Another drawback is the external monopolization to domestic encryption radio wave clock circuit, is also unfavorable for China's clock and watch
The development of itself industry.The power supply of radio wave clock can only be common batteries power supply, and power-on time can only maintain 1 year or so, need every year
It replaces, the signal of radio wave clock is also influenced by weather or season sometimes, and is had in the area coverage of different geographical quite a lot of
No signal dead zone.
When radio wave clock works, if there is electric wave signal, primary, this working method, to quartz clock when general one minute school
Crystal oscillator it is of less demanding, this is its advantage, but the reception decoding circuit of electric wave signal is increased in integral movement, and structure is complicated,
And decoding efficiency is low, is unfavorable for overhauling.And the smaller indoor clock for being only suitable for small disk of torque of radio wave clock uses.
Currently with intelligent and Internet technology great-leap-forward development, the research of Internet of Things and smart home becomes current
A hot spot, requirement of the people to necessity for life be higher and higher.As an important component of household, clock should
Towards intelligent, hommization and network homeization development, this is an inexorable trend of current high speed network informationized society.Cause
This, design to those of ordinary skill in the art a kind of torque it is big, can be using widely used, signal covering surface is wide
Cdma network receive the satellite standard time, applied to it is indoor, without setting up exterior aerial, without accessing all kinds of local area network
, independent operating, low energy consumption, it is non-maintaining and be capable of automatic Proofreading Hour Minute Second pointer time service, low-cost, household or quotient
With the design method of pointer regional clock movement, for market provide it is a can be close to the smart home and human nature that people live
The pointer regional clock of change this be those skilled in the art's project urgently to be resolved.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, and provide a kind of new, rotating torque
Greatly, can be using widely used, the wide cdma network of signal covering surface receives the satellite standard time, applied to it is indoor, be not necessarily to
Set up exterior aerial, without access all kinds of local area network, independent operating, low energy consumption, it is non-maintaining and can automatic Proofreading when
The design method of every minute and second pointer time service, low-cost, domestic or commercial pointer-type regional clock movement.
In order to solve the above technical problems, the present invention is achieved by following technical solution: a kind of pointer-type region
The design method of clock movement, the whole design including machine core and control system, is characterized in that, the design of the machine core
The concrete structure design of whole design and each matching component including machine core machine driven system, drive system and control system；
The design of the machine core machine driven system is the metal clock movement using metal material, and cassette mechanism structure is designed as 3 steppings
Motor, the method being connected respectively by when needle tubing, minute hand pipe, the second hand pipe of gear drive and coaxial arrangement, when composition
The mechanical transmission mechanism of the three coaxial needle heart of clock movement Hour Minute Second rotation；The design of the machine core is to be equipped at least one in machine core
Optoelectronic switch as the second, point, when three needles be zeroed photoelectric coupling detection information feedback mechanism；The design of the machine core drive system is
Driving circuit chip is set using the operation of half step driving method driving stepper motor.
Further to solve above-mentioned technical problem, the preferred embodiment of above-mentioned technical proposal is:
The design method of movement control system described above is: using AVR single chip main control module for core, utilizes 12V DC
Power supply power supply devises the voltage regulator circuit of CDMA and single-chip microcontroller utility power, by setting low-power consumption DC voltage-stabilizing LDO circuit,
Crystal oscillator frequency stabilization module, manual key module, CDMA time service module, serial communication interface module, standby clock module, driving chip
Module, state indicator module, machine core feedback signal adjustment module, pointer zero sensing photoelectric couple detection module, upper electromechanics
The control circuit of the movement control system of brain parameter debugging and correction module composition.
The design method of movement control system standby clock module described above is: can not receive CDMA signal extreme case
The acquisition of lower standard time is: using the standby time circuit PCF8563 chip of setting, obtaining mark in CDMA time service module every time
After between punctual, standby clock module is corrected at the time of the integer second, when standby clock module passes through I2C bus to standard
Between the method that is written and read.
The design method of movement control system described above is: in the case where can not receive CDMA signal, AVR single chip master
Control module is provided with manual key module, to support to manually adjust Hour Minute Second pointer, and will be saved in standby clock module the time
In.
The design method of the AVR single chip main control module of control system described above is: AVR single chip main control module is usually
It is mostly in sleep pattern, is waken up once every 2 milliseconds, current working condition is checked after wake-up, is determined according to working condition
Drive motor whether is needed, while checking whether there is and subsequently entering sleep by key pressing, the process that this checks and drives is very
Of short duration, the sleep of AVR single chip main control module system most of the time, the complete machine power consumption of system is completely used for the horse of machine core when sleep
Up to driving.
The design method of machine core zero sensing photoelectric coupling detection module is in movement control system described above: driving
When 3 stepper motors are normally walked, when pointer zero and when school are handled, the working method for being all made of sleep and irregularly waking up, with
Reduce itself current drain of AVR single chip main control module, the current drain of pointer zero sensing photoelectric coupling detection module and school
The current drain of CDMA time service module in the case of between punctual；When initial power-on, control system drives 3 stepper motors of Hour Minute Second
Movement makes pointer zero sensing photoelectric coupling detection module detect access, and then second stepper motor starts to act, and finds second hand
Initial position；Substep finds the initial position of minute hand into motor action after second hand finds initial position；Minute hand finds initial bit
Stepping motor action when postponing finds the initial position of hour hands；After three pointers all reach initial position, into shape when chasing after
State, control system drives 3 stepper motors of Hour Minute Second to run with identical speed to the position of standard time simultaneously at this time, enters
State when normally walking；When normally walking when state, control system driving second stepper motor continuously runs driving second hand when being walked,
Operations in points of stepper motor every 10 seconds are primary, when operation in stepper motor every 120 seconds it is primary.
In movement control system described above when the school of CDMA time service module and the design method of communication is: passing through setting
The upper electric control of IRF7834, when work, the conducting of IRF7834 metal-oxide-semiconductor, the power-up of CDMA time service module；Then pass through control
CDMARST, CDMAPower carry out reset operation to CDMA time service module hardware, and the state of CDMA signal is obtained with AT command set
And current time, it is communicated with the high speed baud rate of 9600bps, after issuing AT instruction, CDMA time service module, which provides, to be accurate to less than 5
The satellite time information of millisecond.
The design method of crystal oscillator frequency stabilization module is in movement control system described above: using the passive crystalline substance of direct insertion 12.5PF
Vibration, through the frequency error of tunable capacitor 32768HZ outside AVR single chip main control module within 0.001HZ, then in system
When operation, every 1 hour to because of crystal oscillator caused by evaluated error carry out software compensation.
The design method of the serial communication interface module of movement control system described above is: being provided with RS422, GPS, B
Code isochronon interface is used with being suitable for various engineering occasion.
The present invention has following substantive distinguishing features outstanding and significant progress compared with prior art:
One is the design method of pointer-type regional clock movement of the present invention is by machine core mechanical transmission mechanism using gold
Belong to the metal clock movement that is prepared of material, machine core is equipped with 3 stepper motors, respectively by gear drive with it is coaxial
When needle tubing, minute hand pipe, the second hand pipe of setting are connected, and constitute the mechanical transmissioning machine of the three coaxial needle heart of clock movement Hour Minute Second setting
The technical solution of structure makes the design of pointer regional clock movement of the present invention have the rotation of the three coaxial needle heart of Hour Minute Second, turn
The big distinguishing feature of kinetic moment, for the large-scale occasion such as office building, hospital, railway, square provide it is a kind of it is new, can make extensively
Round-the-clock pointer-type regional clock movement, the clock movement used, using step motor control, have for metal machine core
The features such as stable and reliable in work, has installed photoelectric sensor additional in machine core mechanical structure, can detect 0 point of standard of clock movement
It sets.The design hardware circuit is practical simple, low in cost, terminal with compact integral structure, completely by the outer driving circuit core of flexible machine core
Piece drives machine core motor operation, and easy access, upgrading and debugging make the design of pointer regional clock movement of the present invention
Method has substantive distinguishing features outstanding and significant progress compared with prior art.
The second is the design method of pointer-type regional clock movement of the present invention is by the machine core drive system
Design is that the technical solution of operation of the driving circuit chip using half step driving method driving stepper motor is arranged, and transports machine core
Row is more stable, and noise vibration is lower；Along with accurate using software compensation and hardware capacitive vernier guarantee pointer instruction time
Technical solution, ensure that the pointer regional clock movement self-operating 24 is small in the case of without using the school CDMA
When timekeeping performance of the cumulative errors less than 100 milliseconds, to be reached for household, that commercialization provides a timekeeping performance is more accurate
Clock movement, keep the design method of pointer regional clock movement of the present invention had outstanding compared with prior art
Substantive distinguishing features and significant progress.
The third is the design method of pointer-type regional clock movement control mechanism of the present invention is using AVR single chip
Main control module is core, using 12V DC power supply power supply, devises the voltage regulator circuit of CDMA and single-chip microcontroller utility power, passes through
Low-power consumption DC voltage-stabilizing LDO circuit, crystal oscillator frequency stabilization module, manual key module, CDMA time service module, serial communication interface are set
Module, standby clock module, driving chip module, state indicator module, machine core feedback signal adjustment module, pointer zero sensing
The control circuit of the movement control system of photoelectric coupling detection module, the parameter testing of host computer computer and correction module composition.By
It is larger in CDMA module work power consumption, and when control mechanism is walked, is accurate, so without carrying out moment calibration to clock movement, therefore adopt
When with carrying out regular school to machine core, machine system is in order to reduce cost, using relatively inexpensive common crystals, and makes institute of the present invention
The design method for the pointer regional clock movement stated has design concept novelty, technical measures reliable compared with prior art,
Product cost decline, uses the substantive distinguishing features outstanding of reliable in quality.
Detailed description of the invention
Included attached drawing provides a further understanding of the present invention, is incorporated into this specification and constitutes this explanation
A part of book, the attached drawing show the embodiment of the present invention and are used to explain the principle of the present invention together with specification.?
The same reference numbers in the drawings refer to identical components.
In the accompanying drawings:
Fig. 1 is a kind of Control system architecture design frame chart of the design method of pointer regional clock movement of the present invention.
Fig. 2 is a kind of cassette mechanism structure design diagram of the design method of pointer regional clock movement of the present invention.
Fig. 3 is the top view of Fig. 2.
Fig. 4 is that a kind of CDMA interface circuit structure of the design method of pointer regional clock movement of the present invention designs signal
Figure.
Fig. 5 is that a kind of CDMA interface circuit structure of the design method of pointer regional clock movement of the present invention designs signal
Figure.
Fig. 6 is a kind of standby time circuit design schematic diagram of the design method of pointer regional clock movement of the present invention.
Appended drawing reference are as follows: 1-AVR single-chip microcontroller main control module 2- standby clock module 3- driving chip module 4- machine core
4.1 stepper motors 4.1.1- seconds 4.2- seconds motor wheels of stepper motor when stepper motor 4.1.2- divides stepper motor 4.1.3-
Needle tubing 4.7- minute hand pipe 4.8- second hand pipe 4.9- clamping plate when motor wheel 4.5- motor shaft 4.6- when 4.3- separated motor wheel 4.4
The zero sensing photoelectric coupling of 4.10- clamping plate 4.11- optoelectronic switch 4.12- hour wheel 4.13- minute wheel 4.14- second wheel 5- pointer
Detection module 6- machine core feedback signal adjusts module 7- state indicator module 8- host computer computer parameter testing and correction module
9- CDMA time service module 10- manual key module 11- crystal oscillator frequency stabilization circuit module 12- serial communication interface module.
Specific embodiment
A kind of design method of the invention will now be described in detail with reference to the accompanying drawings pointer regional clock movement and specific knot
The design of structure details and process is installed and used, the limiting to the claimed invention that must not be interpreted as in all senses.
Embodiment 1:
A kind of design method of pointer regional clock movement of the embodiment of the present invention 1, it is to be satisfied with naval vessel, hotel vehicle
It stands, the public places such as harbour and uniformly carry out pointer used in the intelligent princip al and subordinate clock system that control uses in the regional scope
The new design that formula regional clock movement is carried out by carrier.A kind of pointer regional clock movement described in it is (referring to fig. 2,
Design method Fig. 3) is the whole design including machine core 4 and control system, and the design of the machine core 4 includes that machine core machinery passes
Dynamic system, the concrete structure design of the whole design of drive system and control system and each matching component；The machine core 4 is mechanical to be passed
The design of dynamic system is the metal clock movement using metal material, and cassette mechanism structure is designed as 3 stepper motors 4.1, leads to respectively
The method that when needle tubing 4.6, minute hand pipe 4.7, the second hand pipe 4.8 of gear drive and coaxial arrangement are connected is crossed, clock is constituted
The mechanical transmission mechanism of the three coaxial needle heart of machine core Hour Minute Second rotation；The design of the machine core drive system is setting one drive circuit
Chip drives the operation of stepper motor using half step driving method.3 stepper motors 4.1 of machine core 4 are respectively as follows: a second stepper motor
4.1.1, divide stepper motor 4.1.2, when stepper motor 4.1.3；Second, stepper motor 4.1.1 passed through the second motor on motor shaft 4.5
Wheel 4.2 is connected with the second wheel 4.14 being mounted on second wheel pipe 4.8；Stepper motor 4.1..2 is divided to pass through the separated motor on motor shaft
Wheel 3 is connected with the minute wheel 4.13 being mounted on cannon pinion 4.7；When stepper motor 4.1.3 pass through the when motor wheel on motor shaft
4.4 are connected with the hour wheel 4.12 being mounted on hour wheel pipe 4.6；Machine core 4 be equipped with optoelectronic switch 4.11 as the second, point, when
Three needles zero feedback coupling detection optocoupler, entire machine core 4 is that carrier install with clamping plate 4.9,4.10.
Further to solve above-mentioned technical problem, the design method (referring to Fig. 1) of movement control system described above is to adopt
It is core with AVR single chip main control module 1, using 12V DC power supply power supply, devises the steady of CDMA and single-chip microcontroller utility power
Volt circuit, by the way that low-power consumption DC voltage-stabilizing LDO module, crystal oscillator frequency stabilization module 11, manual key module 10, CDMA time service mould is arranged
Block 9, serial communication interface module 12, standby clock module 2, driving chip module 3, state indicator module 7, machine core feedback signal
Adjust the machine that module 6, pointer zero sensing photoelectric coupling detection module 5, the parameter testing of host computer computer and correction module 8 form
The control circuit of core control system.
The design method (referring to Fig. 6) of movement control system standby clock module 2 described above is to can not receive CDMA letter
The acquisition of number extreme case lower standard time is: using the standby time circuit PCF8563 chip of setting, every time in CDMA time service
After module 9 obtains the standard time, standby clock module 2 is corrected at the time of the integer second, standby clock module 2 passes through
The method that I2C bus is written and read the standard time.
The design method of movement control system described above is the voltage stabilizing circuit module in the case where can not receive CDMA signal
It is additionally provided with manual key module 10, to support to manually adjust Hour Minute Second pointer, and standby clock module 2 will be saved in the time
In.
The design method of the AVR single chip main control module 1 of control system described above is: AVR single chip main control module 1 is flat
When be mostly in sleep pattern, waken up every 2 milliseconds primary, current working condition checked after wake-up, is determined according to working condition
It is fixed whether to need drive motor, while checking whether there is and subsequently entering sleep by key pressing, this is checked and the process of driving is non-
Often of short duration, the sleep of 1 system most of the time of AVR single chip main control module, the complete machine power consumption of system is completely used for machine core when sleep
Motor driving.
The design method of machine core zero sensing photoelectric coupling detection module 5 is (referring to figure in movement control system described above
2, Fig. 3) it is to be all made of sleep and irregularly when driving 3 stepper motors 4.1 normally to walk, when pointer zero and when school are handled
Several working ways, pointer zero sensing when reducing AVR single chip main control module 1 itself consumption in operation, zero such as wake up
The current drain of the current drain of photoelectric coupling detection module 5 and the CDMA time service module 9 in the case of prover time；Initial power-on
When, control system drives 3 stepper motors 4.11 of Hour Minute Second to act, and detects pointer zero sensing photoelectric coupling detection module 5
To access, then second stepper motor 4.1.1 starts to act, and finds the initial position of second hand；Second hand finds substep after initial position
It is acted into motor 4.1.2, finds the initial position of minute hand；Stepper motor 4.1.3 is acted when minute hand is found after initial position, is found
The initial position of hour hands；After three pointers all reach initial position, into state when chasing after, when control system drives simultaneously at this time
3 stepper motors 4.1 of every minute and second are run with identical speed to the position of standard time, into state when normally walking；Normally walking
When state when, control system driving second stepper motor 4.1.1 continuously runs driving second hand when being walked, and divides stepper motor 4.1.2
Operation in every 10 seconds is primary, when operation in stepper motor 4.1.3 every 120 seconds it is primary.
(referring to fig. 4, scheme when the school of CDMA time service module 9 with the design method of communication in movement control system described above
5) be by the upper electric control of setting IRF7834, when work, the conducting of IRF7834 metal-oxide-semiconductor, the power-up of CDMA time service module 9.Then lead to
Control CDMARST is crossed, CDMAPower carries out reset operation to 9 hardware of CDMA time service module, obtains CDMA signal with AT command set
State and current time, communicated with the high speed baud rate of 9600bps, after issuing AT instruction, CDMA time service module 9 is provided accurately
To the satellite time information less than 5 milliseconds.
The design method of crystal oscillator frequency stabilization module 11 is passive using direct insertion 12.5PF in movement control system described above
Then crystal oscillator exists through the frequency error of 1 outside tunable capacitor 32768HZ of AVR single chip main control module within 0.001HZ
When system is run, software compensation is carried out to the evaluated error due to caused by crystal oscillator every 1 hour.
The design method of the serial communication interface module 12 of movement control system described above is: be provided with RS422, GPS,
B code isochronon interface is used with being suitable for various engineering occasion.
The above are a kind of static structures of the design method of pointer-type regional clock movement described in the embodiment of the present invention 1.
Embodiment 2:
A kind of design method (referring to Fig. 1) of pointer regional clock movement of the embodiment of the present invention 2, it is to be suitable for community
A kind of new design that the intelligent pointer type regional clock movement of residential use carries out for carrier, the pointer region
The design method of clock movement (referring to fig. 2) is: the whole design including machine core 4 and control system, the design packet of the machine core 4
Include the whole design of machine core machine driven system, drive system and control system and the concrete structure design of each matching component；Institute
The design for stating 4 machine driven system of machine core is the metal clock movement for using metal material, and cassette mechanism structure is designed as 3 steppings
Motor 4.1 is connected by when needle tubing 4.6, minute hand pipe 4.7, the second hand pipe 4.8 of gear drive and coaxial arrangement respectively
Method constitutes the mechanical transmission mechanism of the three coaxial needle heart of clock movement Hour Minute Second rotation；The design of the machine core drive system is
Driving circuit chip is set using the operation of half step driving method driving stepper motor.3 stepper motors 4.1 of machine core 4 divide
Not are as follows: second stepper motor 4.1.1, divide stepper motor 4.1.2, when stepper motor 4.1.3；Second, stepper motor 4.1.1 passed through motor
Second motor wheel 4.2 on axis 4.5 is connected with the second wheel 4.14 being mounted on second wheel pipe 4.8；Stepper motor 4.1..2 is divided to pass through
Separated motor wheel 3 on motor shaft is connected with the minute wheel 4.13 being mounted on cannon pinion 4.7；When stepper motor 4.1.3 pass through electricity
When motor wheel 4.4 on arbor is connected with the hour wheel 4.12 being mounted on hour wheel pipe 4.6；Machine core 4 is equipped with an optoelectronic switch
4.11, using as the second, point, when three needles zero feedback coupling detection optocoupler, entire machine core 4 with clamping plate 4.9,4.10 be supporter into
Row is installed.
Further to solve above-mentioned technical problem, the design method (referring to Fig. 1) of movement control system described above is to adopt
It is core with AVR single chip main control module 1, using 12V DC power supply power supply, devises the steady of CDMA and single-chip microcontroller utility power
Volt circuit, by the way that low-power consumption DC voltage-stabilizing LDO module, crystal oscillator frequency stabilization module 11, manual key module 10, CDMA time service mould is arranged
Block 9, serial communication interface module 12, standby clock module 2, driving chip module 3, state indicator module 7, machine core feedback signal
Adjust the machine that module 6, pointer zero sensing photoelectric coupling detection module 5, the parameter testing of host computer computer and correction module 8 form
The control circuit of core control system.
The design method (referring to Fig. 6) of movement control system standby clock module 2 described above is to can not receive CDMA letter
The acquisition of number extreme case lower standard time is: using the standby time circuit PCF8563 chip of setting, every time in CDMA time service
After module 9 obtains the standard time, standby clock module 2 is corrected at the time of the integer second, standby clock module 2 passes through
The method that I2C bus is written and read the standard time.
The design method of movement control system described above is the voltage stabilizing circuit module in the case where can not receive CDMA signal
It is additionally provided with manual key module 10, to support to manually adjust Hour Minute Second pointer, and standby clock module 2 will be saved in the time
In.
The design method of the AVR single chip main control module 1 of control system described above is: AVR single chip main control module 1 is flat
When be mostly in sleep pattern, waken up every 2 milliseconds primary, current working condition checked after wake-up, is determined according to working condition
It is fixed whether to need drive motor, while checking whether there is and subsequently entering sleep by key pressing, this is checked and the process of driving is non-
Often of short duration, the sleep of 1 system most of the time of AVR single chip main control module, the complete machine power consumption of system is completely used for machine core when sleep
Motor driving.
The design method of machine core zero sensing photoelectric coupling detection module 5 is (referring to figure in movement control system described above
2, Fig. 3) it is to be all made of sleep and irregularly when driving 3 stepper motors 4.1 normally to walk, when pointer zero and when school are handled
Several working ways, pointer zero sensing when reducing AVR single chip main control module 1 itself consumption in operation, zero such as wake up
The current drain of the current drain of photoelectric coupling detection module 5 and the CDMA time service module 9 in the case of prover time；Initial power-on
When, control system drives 3 stepper motors 4.11 of Hour Minute Second to act, and detects pointer zero sensing photoelectric coupling detection module 5
To access, then second stepper motor 4.1.1 starts to act, and finds the initial position of second hand；Second hand finds substep after initial position
It is acted into motor 4.1.2, finds the initial position of minute hand；Stepper motor 4.1.3 is acted when minute hand is found after initial position, is found
The initial position of hour hands；After three pointers all reach initial position, into state when chasing after, when control system drives simultaneously at this time
3 stepper motors 4.1 of every minute and second are run with identical speed to the position of standard time, into state when normally walking；Normally walking
When state when, control system driving second stepper motor 4.1.1 continuously runs driving second hand when being walked, and divides stepper motor 4.1.2
Operation in every 10 seconds is primary, when operation in stepper motor 4.1.3 every 120 seconds it is primary.
(referring to fig. 4, scheme when the school of CDMA time service module 9 with the design method of communication in movement control system described above
5) be by the upper electric control of setting IRF7834, when work, the conducting of IRF7834 metal-oxide-semiconductor, the power-up of CDMA time service module 9.Then lead to
Control CDMARST is crossed, CDMAPower carries out reset operation to 9 hardware of CDMA time service module, obtains CDMA signal with AT command set
State and current time, communicated with the high speed baud rate of 9600bps, after issuing AT instruction, CDMA time service module 9 is provided accurately
To the satellite time information less than 5 milliseconds.
The design method of crystal oscillator frequency stabilization module 11 is passive using direct insertion 12.5PF in movement control system described above
Then crystal oscillator exists through the frequency error of 1 outside tunable capacitor 32768HZ of AVR single chip main control module within 0.001HZ
When system is run, software compensation is carried out to the evaluated error due to caused by crystal oscillator every 1 hour.
The design method of the serial communication interface module 12 of movement control system described above is: be provided with RS422, GPS,
B code isochronon interface is used with being suitable for various engineering occasion.
The above are a kind of static structures of the design method of pointer-type regional clock movement described in the embodiment of the present invention 2.
Claims (9)
1. a kind of design method of pointer-type regional clock movement, the whole design including machine core and control system, feature exist
In the design of the machine core includes machine core machine driven system, the whole design of drive system and control system and each mating portion
The concrete structure design of part；The design of the machine core machine driven system is the metal clock movement using metal material, machine core
Structure is designed as 3 stepper motors, passes through the when needle tubing, minute hand pipe, second hand pipe phase of gear drive and coaxial arrangement respectively
The method of connection constitutes the mechanical transmission mechanism of the three coaxial needle heart of clock movement Hour Minute Second rotation；The design of the machine core be
Be equipped in machine core at least one optoelectronic switch as the second, point, when three needles zero photoelectric coupling detection information feedback mechanism；The machine
The design of core drive system is that driving circuit chip is arranged using the operation of half step driving method driving stepper motor.
2. the design method of pointer-type regional clock movement according to claim 1, which is characterized in that the machine core control
The design method of system is: use AVR single chip main control module for core, using 12V DC power supply power supply, devise CDMA and
The voltage regulator circuit of single-chip microcontroller utility power, by the way that low-power consumption DC voltage-stabilizing LDO circuit, crystal oscillator frequency stabilization module, manual key is arranged
Module, CDMA time service module, serial communication interface module, standby clock module, driving chip module, state indicator module, machine
Core feedback signal adjusts module, pointer zero sensing photoelectric coupling detection module, the parameter testing of host computer computer and correction module
The control circuit of the movement control system of composition.
3. the design method of pointer-type regional clock movement according to claim 1 or 2, which is characterized in that the machine core
The design method of control system standby clock module is: in the case where can not receive CDMA signal extreme situation the acquisition of standard time be:
Using the standby time circuit PCF8563 chip of setting, every time after CDMA time service module obtains the standard time, in the integer second
Moment is corrected standby clock module, the method that standby clock module is written and read the standard time by I2C bus.
4. the design method of pointer-type regional clock movement according to claim 1 or 2, which is characterized in that the machine core
The design method of control system is: in the case where can not receive CDMA signal, AVR single chip main control module is provided with manual key
Module to support to manually adjust Hour Minute Second pointer, and will be saved in standby clock module the time.
5. the design method of pointer-type regional clock movement according to claim 3, which is characterized in that the control system
The design method of AVR single chip main control module be: AVR single chip main control module is usually mostly in sleep pattern, every 2 millis
Second wakes up once, and current working condition is checked after wake-up, drive motor is decided whether according to working condition, checks simultaneously
Whether have and subsequently enter sleep by key pressing, this is checked and the process of driving is very of short duration, AVR single chip main control module system
Most of the time sleep, the complete machine power consumption of system is completely used for the motor driving of machine core when sleep.
6. the design method of pointer-type regional clock movement according to claim 1 or 2, which is characterized in that the machine core
The design method of machine core zero sensing photoelectric coupling detection module is in control system: when driving 3 stepper motors normally to walk,
When being handled when pointer zero and school, the working method for being all made of sleep and irregularly waking up, to reduce AVR single chip main control module
Itself current drain, the current drain of pointer zero sensing photoelectric coupling detection module and the CDMA time service in the case of prover time
The current drain of module；When initial power-on, control system drives 3 stepper motor movements of Hour Minute Second, makes pointer zero sense light
It is electrically coupled detection module and detects access, then second stepper motor starts to act, and finds the initial position of second hand；Second hand is found just
Substep finds the initial position of minute hand into motor action behind beginning position；Stepping motor action when minute hand is found after initial position, seeks
Look for the initial position of hour hands；After three pointers all reach initial position, into state when chasing after, control system drives simultaneously at this time
3 stepper motors of Hour Minute Second are run with identical speed to the position of standard time, into state when normally walking；When normally walking
When state, control system driving second stepper motor continuously runs driving second hand when being walked, and divides operation one in stepper motor every 10 seconds
It is secondary, when operation in stepper motor every 120 seconds it is primary.
7. the design method of pointer-type regional clock movement according to claim 2, which is characterized in that the machine core control
In system when the school of CDMA time service module and the design method of communication is: by electric control on setting IRF7834, when work,
The conducting of IRF7834 metal-oxide-semiconductor, the power-up of CDMA time service module；Then by control CDMARST, CDMAPower is to CDMA time service mould
Block hardware carries out reset operation, obtains the state and current time of CDMA signal, with AT command set with the high speed baud of 9600bps
Rate communication, after issuing AT instruction, CDMA time service module provides the satellite time information being accurate to less than 5 milliseconds.
8. the design method of pointer-type regional clock movement according to claim 2, which is characterized in that the machine core control
The design method of crystal oscillator frequency stabilization module is in system: using direct insertion 12.5PF without source crystal oscillator, passing through AVR single chip main control module
The frequency error of external tunable capacitor 32768HZ is within 0.001HZ, then when system is run, every 1 hour to because of crystal oscillator
Caused evaluated error carries out software compensation.
9. the design method of pointer-type regional clock movement according to claim 2, which is characterized in that the machine core control
The design method of the serial communication interface module of system is: it is provided with RS422, GPS, B code isochronon interface, it is a variety of to be suitable for
Engineering applications use.
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Cited By (1)
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| CN114253118A (en) * | 2021-12-06 | 2022-03-29 | 珠海经济特区南森科技有限公司 | Mechanical pointer type automobile clock system and travel time method |
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