CN104199339B - Portable first-line bus temperature monitoring instrument and achievement method thereof - Google Patents
Portable first-line bus temperature monitoring instrument and achievement method thereof Download PDFInfo
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- CN104199339B CN104199339B CN201410389456.1A CN201410389456A CN104199339B CN 104199339 B CN104199339 B CN 104199339B CN 201410389456 A CN201410389456 A CN 201410389456A CN 104199339 B CN104199339 B CN 104199339B
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Abstract
The invention relates to a portable first-line bus temperature monitoring instrument and an achievement method thereof. The temperature monitoring instrument comprises a minimum single-chip microcomputer system, a power circuit, a first-line bus interface circuit, a communication interface module, a storage chip, a clock chip, a liquid crystal display module and a keyboard input module, wherein the power circuit, the first-line bus interface circuit, the communication interface module, the storage chip, the clock chip, the liquid crystal display module and the keyboard input module are connected with the minimum single-chip microcomputer system; the power circuit is used for supplying working voltage; the minimum single-chip microcomputer system is connected with a first-line bus temperature measuring cable and a monitoring host computer through the first-line bus interface circuit and the communication interface module, respectively; the storage chip is used for storing the cable parameters and temperature parameters; the clock chip is used for providing real-time clock; the liquid crystal display module is used for displaying the temperature information processed by the minimum single-chip microcomputer system; four keys are arranged on a panel of the keyboard input module and used for inputting operating instruction information to the minimum single-chip microcomputer system. According to the portable first-line bus temperature monitoring instrument and the achievement method, a main control program, an interrupting service program and a sub-processing program are arranged in the minimum single-chip microcomputer system to realize the portable first-line bus temperature monitoring instrument.
Description
Technical field
The present invention relates to a kind of temperature monitoring instrument and its implementation method, especially with regard to a kind of portable one-wire bus temperature
Degree measuring instrument and its implementation.
Background technology
One-wire bus refer to realize the total of digital communication merely with a holding wire and the line of return as reference ground
Line, can realize to being overlapped on the access of several one-wire bus devices and control in this bus using one-wire bus technology.
One line device is in accordance with one-wire bus agreement and to realize the device of the functions such as some sensings, conversion, control, storage, every line
All it is etched with unique one group of 64 binary code (abbreviation id code), in order to identify every line device of difference when device dispatches from the factory.
One line digital temperature sensor ds18b20 is a wherein the most a line device.
In actual practicality, several line digital temperature sensors are connected to one pair according to the requirement of monitoring position
On twisted wire cable, this cable is referred to as cable for measuring temperature.When being monitored to multi-point temp, one-wire bus technology has bus
Connect, connect up the remarkable advantage such as simple.By mine shaft freeze and subway horizontal frozen engineering practice as a example, freeze to grasp
The development situation of engineering, generally manages to lay some one-wire bus cable for measuring temperature in some regions, and manages to realize to every
The monitoring of all temperature points on bar cable for measuring temperature.In one-wire bus monitoring application, generally given using on-Line Monitor Device
Realize, will regularly be connected to monitoring device by one or more cable for measuring temperature, form a set of stable monitoring system.This realization
Mode needs to provide field power supply, needs monitoring device and monitoring host computer communication, needs computer software of exploitation supervision etc..
This kind of mode put into greatly, technology implementation link is many, high cost is it is adaptable to measuring point is larger, monitoring frequency high field is closed.
Content of the invention
For the problems referred to above, it is an object of the invention to provide a kind of occupation mode flexibly convenient, low cost portable one
Line bus temperature monitoring instrument and its implementation method.
For achieving the above object, the present invention takes a kind of technical scheme below: portable one-wire bus temperature monitoring instrument,
It is characterized in that: it includes single-chip minimum system, power circuit, one-wire bus interface circuit, communication interface module, storage core
Piece, clock chip, LCD MODULE and input through keyboard module；Described power circuit is described single-chip minimum system, a line
Bus interface circuit, communication interface module, storage chip, clock chip, LCD MODULE and input through keyboard module for power supply, institute
State single-chip minimum system pass through described one-wire bus interface circuit and described communication interface module respectively with one-wire bus thermometric
Cable and monitoring host computer connect；Described storage chip is connected with described single-chip minimum system, for storing cable data and temperature
Degree parameter；Described clock chip is connected with described single-chip minimum system by bus, and carries for described single-chip minimum system
For real-time clock；Described LCD MODULE and input through keyboard module are all connected with described single-chip minimum system, through described list
Temperature information after piece machine minimum system is processed is shown by described LCD MODULE；By described input through keyboard module
Enter the operating instructions information to described single-chip minimum system；On the panel of described input through keyboard module, four buttons are set, its
It is respectively as follows: and represent the esc key cancelled or return upper level, the up key representing upwards or increasing, the down representing downwards or reducing
And represent the enter key that current selection is confirmed, and utilize tri- Macintosh of esc+up, esc+down, esc+enter
Extend the function of described input through keyboard module.
Some memory blocks are set in described single-chip minimum system, and the memory block of setting includes: cable for measuring temperature reference record
Memory block, cable temperature reference record memory block, cable for measuring temperature temperature parameter record pointer memory block and instrument management parameter
Record storage area.
Some memory blocks are set in described storage chip, and the memory block of setting includes: cable for measuring temperature reference record memory block,
The record storage of cable temperature reference record memory block, cable for measuring temperature temperature parameter record pointer memory block and instrument management parameter
Area.
A kind of implementation method of described portable one-wire bus temperature monitoring instrument, it comprises the following steps: 1) described electricity
Source circuit is powered for described single-chip minimum system, and after upper electricity, described single-chip minimum system is initialized, and when described
Clock chip obtains present clock, by the selection picture of described LCD MODULE function menu, subsequently enters dormancy work
Operation mode；The initialization of described single-chip minimum system includes initialization to default characteristic variable, to described liquid crystal display mode
Initialization that block shows, initialize and read real-time clock parameter and to described communication interface module to described clock chip
Initialization；Default characteristic variable includes function choosing-item variable menu_function, cable option-argument cable_select
With running status variable run_status；2) one primary control program of setting, three interruption clothes in described single-chip minimum system
Business program and five sub- processing routines, three interrupt service routines are respectively Interruption service routine, tick interrupt service journey
Sequence and serial ports interrupt service routine；Five sub- processing routines are respectively measuring point monitoring subprogram, the sub- journey of cable monitoring data record
Subprogram and communication subprogram consulted in sequence, measuring point search subroutine, record；Primary control program is run using interrupting type of drive, often
After generation is interrupted and has executed interrupt service routine, just exit park mode, enter keystroke handling process；According to described keyboard
Situation that in input module, button is pressed and the working condition that instrument is presently in, select corresponding subprocessing program, change work
Make state, realize realizing multi-functional and too many levels process using limited button；Whether primary control program real-time query is currently located
In at-once monitor state run_status=2, if being in at-once monitor state, measuring point is called to the measuring point on selected cable
Monitoring subprogram, the temperature information of the specified measuring point of cable for measuring temperature selected by real-time update；Run_status=under communication state
14, primary control program real-time inspection has or not communication command mark, if there are communication command mark, then execution communication subprogram.
Described step 2) in, measuring point monitoring subprogram is realized by following steps: (1) is according to cable number from cable for measuring temperature
The first location of this cable for measuring temperature parameter storage is obtained in reference record memory block；(2) the execution verification of agreement method is adopted to calculate, and right
Whether check results are effectively judged；If it is valid, execution step (3)；If invalid, exit measuring point and monitor sub- journey
Sequence；(3) start the temperature transition to this temperature point after the id code obtaining specified measuring point according to sensor sequence number and obtain specified
The temperature information of measuring point；(4) temperature information obtaining is shown by described LCD MODULE.
Described step 2) in, cable monitoring data record subprogram is realized by following steps: (1) will be initial for measuring point sequence number
Turn to 0, and call measuring point monitoring subprogram, the temperature information of extraction is transmitted and is kept in specified ram region；(2) lead to
Cross measuring point quantity on more current measuring point sequence number and cable for measuring temperature, judge whether to have monitored the temperature of all measuring points, if complete
Become monitoring, then execution step (3)；If not completing monitoring, continue to monitor the temperature of next measuring point；(3) read real-time clock
Parameter, and temporary temperature information in Qi Yu ram area is assembled together；(4) according to cable for measuring temperature numbering and temperature parameter note
The record pointer parameter of storage in record pointer memory space, the measuring point monitoring temperature information is transmitted to cable temperature parameter note
Record in storage area and stored.
Described step 2) in, measuring point search subroutine is realized by following steps: (1) stores from cable for measuring temperature reference record
Area extracts cable data, and using the ginseng in the cable for measuring temperature reference record memory block corresponding to verification this cable number of code check
Whether number is effective；If parameter is effectively, judge to whether covering former cable data；If covering former cable data,
Execution step (2), if not covering former cable data, exits measuring point search subroutine；If invalid parameters, execution step
(2)；(2) each sensor on search one-wire bus cable for measuring temperature, and Search Results are transmitted to enter to described LCD MODULE
Row display；(3) it is whether 0 to judge to the number of sensors searching, if Search Results are 0, exit measuring point search
Subprogram, if Search Results are not 0, the id code of sensor is arranged in order, and calculate cable characteristic parameter and
Check code；(4) according to cable sequence number, number of sensors, sensor id code, cable characteristic parameter and check code are transmitted to thermometric
Cable data record storage area is stored.
Described step 2) in, record is consulted subprogram and is realized by following steps: (1) is according to cable number from cable for measuring temperature
Temperature parameter record storage area obtains the first location of cable temperature parameter memory block；(2) obtain certain temperature ginseng according to LSN
The storage head location of number scale record；(3) temperature information of certain measuring point is obtained according to measuring point sequence number；(4) temperature information obtaining passes through institute
State LCD MODULE to be shown.
Described step 2) in, communication subprogram is realized by following steps: (1) primary control program real-time judge monitoring host computer is
No transmission Communication Control order, if receiving the Communication Control order that monitoring host computer sends, communication subprogram parses this communication
Control command；Otherwise, exit communication subprogram；(2) coding according to Communication Control order, communication subprogram carries out meter parameter
The operations such as setting, real-time clock setting, cable data upload and temperature parameter upload.
Described step 2) in, Interruption service routine is set to the Interruption of some cycles, for realizing keyboard
Input processing, draws the working condition of keyboard, has included whether that Macintosh is pressed；Clock interrupt service routine is at regular intervals
Produce and once interrupt, the real-time clock parameter of single-chip microcomputer memory storage is updated, provide in real time for cable temperature reference record
Clock label；Serial ports interrupt service routine starts serial ports transmitting-receiving under instrument communication mode and interrupts, and realizes and between monitoring host computer
Communication contact, monitoring host computer adopts master-slave communication pattern with instrument cubicle；Interrupting receiving in service routine, instrument is to receiving
Monitoring host computer information carries out syntactic analysiss, after obtaining effective monitoring host computer Communication Control signal, setting corresponding order mark
Will, then responds process by primary control program to Communication Control signal.
Due to taking above technical scheme, it has the advantage that the 1, present invention is led to by single-chip minimum system to the present invention
Cross one-wire bus interface circuit and communication interface module is connected with one-wire bus cable for measuring temperature and monitoring host computer respectively, by a line
Bus interface circuit alternately connects a plurality of cable for measuring temperature, and on detection cable for measuring temperature, the temperature of temperature sensor is believed under software
Number and transmitted to single-chip minimum system by one-wire bus cable for measuring temperature, the temperature information that single-chip minimum system obtains passes through
LCD MODULE is shown, arranges four buttons, press according in input through keyboard module on the panel of input through keyboard module
Situation that key is pressed and the working condition that instrument is presently in, select corresponding to process subprogram；So as to realize a plurality of survey
The search of warm cable temperature information, the function such as monitor, record and consult.2nd, the present invention is due to using single-chip minimum system, electricity
Source circuit, one-wire bus interface circuit, communication interface module, storage chip, clock chip, LCD MODULE and input through keyboard
Module, by the search of a plurality of cable for measuring temperature temperature information, the function such as monitor, record and consult and integrate, replace existing
One-wire bus temperature monitoring system in technology, the therefore present invention can be saved temperature detection cost, simplify one-wire bus thermometric
The operation management of cable monitoring.Based on above advantage, the present invention can be widely applied in one-wire bus temperature monitoring.
Brief description
Fig. 1 is the structural representation of the present invention portable one-wire bus temperature monitoring instrument；
Fig. 2 is the flow chart of the implementation method of the present invention portable one-wire bus temperature monitoring instrument；
Fig. 3 is the state transition diagram under button operation state；On cable no measuring point when, report no measuring point simultaneously enters
State 15, the at-once monitor pressing esc or enter return state 1 in state 15 shows；In Password Input mistake, by enter
Password is re-entered in requirement；
Fig. 4 is measuring point monitoring subprogram implementing procedure figure；
Fig. 5 is cable monitoring data record subprogram implementing procedure figure；
Fig. 6 is measuring point search subroutine implementing procedure figure；
Fig. 7 is that subprogram implementing procedure figure consulted in record；
Fig. 8 is communication subprogram implementing procedure figure.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is described in detail.
As shown in figure 1, the portable one-wire bus temperature monitoring instrument of the present invention includes single-chip minimum system 1, power supply
Circuit 2, one-wire bus interface circuit 3, communication interface module 4, storage chip 5, clock chip 6, LCD MODULE 7 and keyboard
Input module 8.Power circuit 2 is single-chip minimum system 1, one-wire bus interface circuit 3, communication interface module 4, storage chip
5th, clock chip 6, LCD MODULE 7 and input through keyboard module 8 are powered.Single-chip minimum system 1 passes through one-wire bus interface
Circuit 3 is connected with one-wire bus cable for measuring temperature, and one-wire bus interface circuit 3 provides for one-wire bus cable for measuring temperature and drives.Monolithic
Machine minimum system 1 is connected with monitoring host computer by communication interface module 4, realizes data communication.Storage chip 5 is minimum with single-chip microcomputer
System 1 connects, for storing the information such as cable data, temperature parameter.Clock chip 6 passes through bus and single-chip minimum system 1
Connect, and provide real-time clock for single-chip minimum system 1.LCD MODULE 7 and input through keyboard module 8 are all with single-chip microcomputer
Mini system 1 connects, and the temperature information after processing through single-chip minimum system 1 is shown by LCD MODULE 7.By key
Disk input module 8 inputs corresponding operating command information to single-chip minimum system 1.Wherein, the panel of input through keyboard module 8 sets
Put four buttons, it is respectively as follows: and represents the esc key cancelled or return upper level, the up key representing upwards or increasing, represents downwards
Or the down that reduces and represent enter key that current selection is confirmed, and utilize esc+up, esc+down, esc+
The function of tri- Macintosh extended keyboard input modules 8 of enter.
In above-described embodiment, some storages are set in single-chip minimum system 1 internal storage area or external memory chip 4
Area, it specifically includes:
(1) cable for measuring temperature reference record memory block is set；
According to the numbering of one-wire bus cable for measuring temperature, it is that every cable for measuring temperature is respectively provided with a memory space.Each storage is empty
Between middle storage reference numeral cable for measuring temperature on the quantity of connect one-wire bus temperature sensor, the id code of every temperature sensor or
This corresponding numbering of id code, the characterisitic parameter of this cable for measuring temperature and the crc code (cyclic for parameter self-inspection
Redundancy check, CRC) etc. parameter.Wherein, the quantity of the cable for measuring temperature that can arrange is subject to single-chip microcomputer
The restriction of the memory capacity of minimum system 1 internal storage area or external memory chip 4.
(2) cable temperature reference record memory block is set；
Divide a temperature parameter record storage space for every one-wire bus cable for measuring temperature.Temperature parameter record storage space
For storing multigroup temperature parameter of corresponding cable for measuring temperature, every group of temperature parameter of every cable for measuring temperature includes: by temperature sensing
Device number order arrangement corresponding cable for measuring temperature on all temperature sensors record temperature parameter, execute temperature monitoring record when
Corresponding real-time clock, self-inspection code of this group temperature parameter etc..To the temperature parameter that every cable for measuring temperature can be arranged
Group number is limited by the memory capacity in single-chip minimum system 1 internal storage area or external memory chip 4.
(3) cable for measuring temperature temperature parameter record pointer memory block is set；
It is respectively provided with a temperature parameter record pointer memory space for every cable for measuring temperature, store for referring in this memory space
Sequence number, existing record strip number, self demarking code of this group temperature parameter etc. to current or next record.Referred to according to temperature parameter record
In pin memory space, the parameter of storage realizes the management to each temperature parameter record of every cable for measuring temperature.
(4) record storage area of instrument management parameter is set；
The record storage area of instrument management parameter is used for storing instrument management parameter, and instrument management parameter includes the volume of instrument
Password of code, version number and instrument corresponding operating etc..
As shown in Fig. 2 the implementation method of the portable one-wire bus temperature monitoring instrument of the present invention, it specifically includes following
Step:
1) power circuit 2 is powered for single-chip minimum system 1, and after upper electricity, single-chip minimum system 1 is initialized, and from
Clock chip 6 obtains present clock, by the selection picture of LCD MODULE 7 function menu, subsequently enters dormancy work
Operation mode, to reduce the power consumption of temperature monitoring instrument of the present invention.
The initialization of single-chip minimum system 1 includes initialization to default characteristic variable, LCD MODULE 7 is shown
Initialization, initialize and read real-time clock parameter and the initialization to communication interface module 4 to clock chip 6.Its
In, default characteristic variable includes function choosing-item variable menu_function, cable option-argument cable_select and operation
State variable run_status.
2) primary control program, three interrupt service routines and five subprocessing journeys are set in single-chip minimum system 1
Sequence.Wherein, three interrupt service routines are respectively as follows: Interruption service routine, clock interrupt service routine and serial ports and interrupt taking
Business program.Five sub- processing routines are respectively as follows: measuring point monitoring subprogram, cable monitoring data record subprogram, measuring point search
Subprogram and communication subprogram consulted in program, record.
Primary control program is run using interrupting type of drive, after generation is interrupted and executed interrupt service routine, just moves back
Go out park mode, enter keystroke handling process.As shown in figure 3, situation about being pressed according to button in input through keyboard module 8 and instrument
The working condition being presently in, selects corresponding subprocessing program, modification state, thus realizing real using limited button
Show multi-functional and too many levels process.
Whether primary control program real-time query is currently in at-once monitor state run_status=2, if being in instant prison
Survey state, will call measuring point monitoring subprogram, the specified survey of cable for measuring temperature selected by real-time update to the measuring point on selected cable
The temperature information of point.
Run_status=14 under communication state, primary control program real-time inspection has or not communication command mark, if there are logical
News order mark, then execution communication subprogram.
Above-mentioned steps 2) in, as shown in figure 4, measuring point monitoring subprogram is realized by following steps:
(1) head of this cable for measuring temperature parameter storage is obtained from cable for measuring temperature reference record memory block according to cable number
Location.
(2) adopt the execution verification of agreement method to calculate, and whether check results are effectively judged.If it is valid,
Execution step (3)；If invalid, exit measuring point monitoring subprogram.
(3) start the temperature transition to this temperature point after the id code obtaining specified measuring point according to sensor sequence number and obtain
The temperature information of specified measuring point.
(4) temperature information obtaining is shown by LCD MODULE 7.
Above-mentioned steps 2) in, as shown in figure 5, cable monitoring data record subprogram is realized by following steps:
(1) measuring point sequence number is initialized as 0, and calls measuring point monitoring subprogram, the temperature information of extraction is transmitted to finger
Determine to be kept in ram region.
(2) pass through to compare measuring point quantity on current measuring point sequence number and cable for measuring temperature, judge whether to have monitored all measuring points
Temperature, if complete to monitor, execution step (3)；If not completing monitoring, continue to monitor the temperature of next measuring point.
(3) read real-time clock parameter, and temporary temperature information in Qi Yu ram area is assembled together.
(4) according to the record pointer parameter of storage in cable for measuring temperature numbering and temperature parameter record pointer memory space, will
The measuring point temperature information monitoring transmits and is stored to cable temperature reference record memory block.
Above-mentioned steps 2) in, as shown in fig. 6, measuring point search subroutine is realized by following steps:
(1) extract cable data from cable for measuring temperature reference record memory block, and using verification this cable number institute of code check
Whether the parameter in corresponding cable for measuring temperature reference record memory block is effective.If parameter is effectively, to whether covering former cable
Parameter is judged；If covering former cable data, execution step (2), if not covering former cable data, exit measuring point
Search subroutine；If invalid parameters, execution step (2).
(2) each sensor on search one-wire bus cable for measuring temperature, and Search Results are transmitted to enter to LCD MODULE 7
Row display.
(3) it is whether 0 to judge to the number of sensors searching, if Search Results are 0, exit measuring point search
Subprogram, if Search Results are not 0, the id code of sensor is arranged in certain sequence, and calculates cable feature ginseng
Number and check code.
(4) according to cable sequence number, number of sensors, sensor id code, cable characteristic parameter and check code are transmitted to survey
Warm cable data record storage area is stored.
Above-mentioned steps 2) in, as shown in fig. 7, record is consulted subprogram and is realized by following steps:
(1) obtain the head of cable temperature parameter memory block from cable for measuring temperature temperature parameter record storage area according to cable number
Location.
(2) the storage head location of certain temperature parameter record is obtained according to LSN.
(3) temperature information of certain measuring point is obtained according to measuring point sequence number.
(4) temperature information obtaining is shown by LCD MODULE 7.
Above-mentioned steps 2) in, as shown in figure 8, communication subprogram is realized by following steps:
(1) whether primary control program real-time judge monitoring host computer sends Communication Control order, if receive monitoring host computer sent
Communication Control order, then communication subprogram parse this Communication Control order；Otherwise, exit communication subprogram.
(2) coding according to Communication Control order, communication subprogram carries out meter parameter setting, real-time clock setting, electricity
Cable parameter uploads and the operations such as temperature parameter upload.
Above-mentioned steps 2) in, Interruption service routine is set to the Interruption of some cycles (as 10ms), for reality
The input processing of existing keyboard, draws the working condition of keyboard, has included whether Macintosh by inferior.
Clock interrupt service routine produces (as 1s) at regular intervals and once interrupts, to single-chip microcomputer memory storage real-time when
Clock parameter is updated, and provides real-time clock label for cable temperature reference record.
Serial ports interrupt service routine starts serial ports transmitting-receiving under instrument communication mode and interrupts, and realizes logical and between monitoring host computer
News contact, monitoring host computer adopts master-slave communication pattern with instrument cubicle.Interrupting receiving in service routine, instrument is to the prison receiving
Control host information carries out syntactic analysiss, after obtaining effective monitoring host computer Communication Control signal, setting corresponding order mark,
Then process is responded to Communication Control signal by primary control program.
The various embodiments described above are merely to illustrate the present invention, and the structure of wherein each part, connected mode and method and step etc. are all
Can be varied from, every equivalents carrying out on the basis of technical solution of the present invention and improvement, all should not exclude
Outside protection scope of the present invention.
Claims (7)
1. a kind of implementation method of portable one-wire bus temperature monitoring instrument it is characterised in that: described portable one-wire bus
Temperature monitoring instrument includes single-chip minimum system, power circuit, one-wire bus interface circuit, communication interface module, storage core
Piece, clock chip, LCD MODULE and input through keyboard module；Described power circuit is described single-chip minimum system, a line
Bus interface circuit, communication interface module, storage chip, clock chip, LCD MODULE and input through keyboard module for power supply, institute
State single-chip minimum system pass through described one-wire bus interface circuit and described communication interface module respectively with one-wire bus thermometric
Cable and monitoring host computer connect；Described storage chip is connected with described single-chip minimum system, for storing cable data and temperature
Degree parameter；Described clock chip is connected with described single-chip minimum system by bus, and carries for described single-chip minimum system
For real-time clock；Described LCD MODULE and input through keyboard module are all connected with described single-chip minimum system, through described list
Temperature information after piece machine minimum system is processed is shown by described LCD MODULE；By described input through keyboard module
Enter the operating instructions information to described single-chip minimum system；On the panel of described input through keyboard module, four buttons are set, its
It is respectively as follows: and represent the esc key cancelled or return upper level, the up key representing upwards or increasing, the down representing downwards or reducing
And represent the enter key that current selection is confirmed, and utilize tri- Macintosh of esc+up, esc+down, esc+enter
Extend the function of described input through keyboard module；
Some memory blocks are set, and the memory block of setting includes: cable for measuring temperature reference record storage in described single-chip minimum system
Area, the record of cable temperature reference record memory block, cable for measuring temperature temperature parameter record pointer memory block and instrument management parameter
Memory block；
Some memory blocks are set, and the memory block of setting includes: cable for measuring temperature reference record memory block, cable in described storage chip
The record storage area of temperature parameter record storage area, cable for measuring temperature temperature parameter record pointer memory block and instrument management parameter；
Described implementation method comprises the following steps:
1) described power circuit is powered for described single-chip minimum system, and after upper electricity, described single-chip minimum system is carried out initially
Change, and obtain present clock from described clock chip, by the selection picture of described LCD MODULE function menu, with
Enter dormancy mode of operation afterwards；
The initialization of described single-chip minimum system includes initialization to default characteristic variable, described LCD MODULE is shown
The initialization shown, to described clock chip initialize and read real-time clock parameter and to described communication interface module just
Beginningization；Default characteristic variable includes function choosing-item variable menu_function, cable option-argument cable_select and fortune
Row state variable run_status；
2) primary control program, three interrupt service routines and five subprocessing journeys are set in described single-chip minimum system
Sequence, three interrupt service routines are respectively Interruption service routine, clock interrupt service routine and serial ports interrupt service routine；
Five sub- processing routines are respectively measuring point monitoring subprogram, cable monitoring data record subprogram, measuring point search subroutine, record
Consult subprogram and communication subprogram；
Primary control program is run using interrupting type of drive, after generation is interrupted and executed interrupt service routine, just exits not
Sleep mode, enters keystroke handling process；Situation about being pressed according to button in described input through keyboard module and instrument are presently in
Working condition, selects corresponding subprocessing program, modification state, realization is realized multi-functional and multi-ring using limited button
The process of section；
Whether primary control program real-time query is currently in at-once monitor state run_status=2, if being in at-once monitor shape
State, then call measuring point monitoring subprogram, the temperature of the specified measuring point of cable for measuring temperature selected by real-time update to the measuring point on selected cable
Degree information；Run_status=14 under communication state, primary control program real-time inspection has or not communication command mark, if there are communication
Order mark, then execution communication subprogram.
2. as claimed in claim 1 a kind of implementation method of portable one-wire bus temperature monitoring instrument it is characterised in that: institute
State step 2) in, measuring point monitoring subprogram is realized by following steps:
(1) the first location of this cable for measuring temperature parameter storage is obtained from cable for measuring temperature reference record memory block according to cable number；
(2) adopt the execution verification of agreement method to calculate, and whether check results are effectively judged；If it is valid, execution
Step (3)；If invalid, exit measuring point monitoring subprogram；
(3) start the temperature transition to temperature point after the id code obtaining specified measuring point according to sensor sequence number and obtain specified survey
The temperature information of point；
(4) temperature information obtaining is shown by described LCD MODULE.
3. as claimed in claim 1 a kind of implementation method of portable one-wire bus temperature monitoring instrument it is characterised in that: institute
State step 2) in, cable monitoring data record subprogram is realized by following steps:
(1) measuring point sequence number is initialized as 0, and calls measuring point monitoring subprogram, the temperature information of extraction is transmitted to specified ram
Kept in region；
(2) pass through to compare measuring point quantity on current measuring point sequence number and cable for measuring temperature, judge whether to have monitored the temperature of all measuring points,
If completing to monitor, execution step (3)；If not completing monitoring, continue to monitor the temperature of next measuring point；
(3) read real-time clock parameter, and temporary temperature information in Qi Yu ram area is assembled together；
(4) according to the record pointer parameter of storage in cable for measuring temperature numbering and temperature parameter record pointer memory space, will monitor
To measuring point temperature information transmit and stored to cable temperature reference record memory block.
4. as claimed in claim 1 a kind of implementation method of portable one-wire bus temperature monitoring instrument it is characterised in that: institute
State step 2) in, measuring point search subroutine is realized by following steps:
(1) extract cable data from cable for measuring temperature reference record memory block, and using corresponding to verification code check cable number
Whether the parameter in cable for measuring temperature reference record memory block is effective；If parameter is effectively, enter to whether covering former cable data
Row judges；If covering former cable data, execution step (2), if not covering former cable data, exits measuring point search
Program；If invalid parameters, execution step (2)；
(2) each sensor on search one-wire bus cable for measuring temperature, and Search Results are transmitted to enter to described LCD MODULE
Row display；
(3) it is whether 0 to judge to the number of sensors searching, if Search Results are 0, exit measuring point and search for sub- journey
Sequence, if Search Results are not 0, the id code of sensor is arranged in order, and is calculated cable characteristic parameter and verification
Code；
(4) according to cable sequence number, number of sensors, sensor id code, cable characteristic parameter and check code are transmitted to thermometric electricity
Cable reference record memory block is stored.
5. as claimed in claim 1 a kind of implementation method of portable one-wire bus temperature monitoring instrument it is characterised in that: institute
State step 2) in, record is consulted subprogram and is realized by following steps:
(1) obtain the first location of cable temperature parameter memory block from cable for measuring temperature temperature parameter record storage area according to cable number；
(2) the storage head location of certain temperature parameter record is obtained according to LSN；
(3) temperature information of certain measuring point is obtained according to measuring point sequence number；
(4) temperature information obtaining is shown by described LCD MODULE.
6. as claimed in claim 1 a kind of implementation method of portable one-wire bus temperature monitoring instrument it is characterised in that: institute
State step 2) in, communication subprogram is realized by following steps:
(1) whether primary control program real-time judge monitoring host computer sends Communication Control order, if receive that monitoring host computer sends is logical
News control command, then communication subprogram parses this Communication Control order；Otherwise, exit communication subprogram；
(2) coding according to Communication Control order, communication subprogram carries out meter parameter setting, real-time clock setting, cable ginseng
Number uploads and temperature parameter upload operation.
7. as claimed in claim 1 a kind of implementation method of portable one-wire bus temperature monitoring instrument it is characterised in that: institute
State step 2) in, Interruption service routine is set to the Interruption of some cycles, for realizing the input processing of keyboard, obtains
Go out the working condition of keyboard, included whether that Macintosh is pressed；During clock interrupt service routine produces once at regular intervals
Disconnected, the real-time clock parameter of single-chip microcomputer memory storage is updated, provides real-time clock label for cable temperature reference record；String
Mouth interrupt service routine starts serial ports transmitting-receiving under instrument communication mode and interrupts, and realizes the communication contact and between monitoring host computer, prison
Control main frame and instrument cubicle adopt master-slave communication pattern；Interrupting receiving in service routine, instrument is to the monitoring host computer letter receiving
Breath carries out syntactic analysiss, and after obtaining effective monitoring host computer Communication Control signal, setting corresponding order mark, then by leading
Control program responds process to Communication Control signal.
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| CN107576411A (en) * | 2017-10-31 | 2018-01-12 | 河南柴油机重工有限责任公司 | A kind of PT1000 temperature-measuring modules for diesel engine monitoring system |
| CN111353595A (en) * | 2018-12-20 | 2020-06-30 | 上海寒武纪信息科技有限公司 | Operation method, device and related product |
| CN109885740A (en) * | 2019-01-24 | 2019-06-14 | 杭州志远科技有限公司 | A kind of data visualization thermograph system |
| CN115808196A (en) * | 2022-12-30 | 2023-03-17 | 北京康斯特仪表科技股份有限公司 | Bus type measuring instrument detection method, detection device and storage medium |
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