CN110488138A - A method of it is automatic quickly to determine equipment line sequence and data protocol - Google Patents
A method of it is automatic quickly to determine equipment line sequence and data protocol Download PDFInfo
- Publication number
- CN110488138A CN110488138A CN201910841401.2A CN201910841401A CN110488138A CN 110488138 A CN110488138 A CN 110488138A CN 201910841401 A CN201910841401 A CN 201910841401A CN 110488138 A CN110488138 A CN 110488138A
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- Prior art keywords
- fuel charger
- data
- electrically connected
- mcu
- adc
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2612—Data acquisition interface
Abstract
The invention discloses a kind of automatic methods for quickly determining equipment line sequence and data protocol, including fuel charger and Switching Power Supply, the fuel charger is electrically connected in switch matrix module by three tunnel input lines, three tunnel input lines of the fuel charger are electrically connected on analog-digital converter ADC, three groups of input lines of the switch matrix module connection are electrically connected with level conversion respectively, the switch matrix module and general GPIO data connection, the level conversion shows data connection by FSMC and LCD by serial ports and MCU data connection, the MCU；The present invention is gated test access, can be realized protocol communication using quickly identification wiring line sequence, primary connection can the adjust automatically order of connection, accelerate dispenser management system debug speed；It is highly integrated by line sequence identification and mapping function automatic discrimination, keep wiring more quick, accurately, analyzed by software, reaches automatic and quickly judge fuel charger communications protocol.
Description
Technical field
The invention belongs to dispenser management technical fields, more specifically more particularly to a kind of method of data protocol.Together
When, the invention further relates to a kind of automatic quickly judgement equipment.
Background technique
Dispenser management system is also known as middle to control management system, is gas station's computer management system important component, can
Each fuel charger in gas station is unified into a field network, it is connected to gas station's embedded data concentrator, to realize gas station
Real-time management, acquisition and inquiry oil-filling data.
Wherein field wiring, wiring, guarantee communication level equalization are the basis for guaranteeing whole network and working normally, electric current loop
Fuel charger is externally communicated comprising three connections: being sent A, is received B, ground wire G.Signal definition of clear fuel charger itself is needed,
It just can ensure that fuel charger and hub communication are normal.Its data line A, B, G need three by specified signal sequence labour-intensive industry L2TP
A terminal, when not knowing signal sequence, direct trial and error mensuration needs multiple pair of connecting wires than trial, such as needs to exchange
A, the position or the exchange position A, G of B location or exchange B, G, after each wiring, checks the receiving end of computer, if having data aobvious
Show, if not data show, prove wiring error, needs to re-replace mode of connection.And each adjustment signal sequence
Afterwards, it needs to check whether in computer to have received data, the data received is compared with protocol data, see whether full
Sufficient protocol frame format, hardware environment is complicated when the method is tested, inconvenient, is not suitable for field connection debugging.
For a kind of existing automatic method common problem for quickly determining equipment line sequence and data protocol, we
It is proposed a kind of automatic method for quickly determining equipment line sequence and data protocol.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of automatic quickly judgement proposed is set
The method of standby line sequence and data protocol.
To achieve the above object, the invention provides the following technical scheme: a kind of automatic method for quickly determining data protocol,
Include the following steps:
Three any line sequences of communication cable A, B, G of fuel charger are first connected to the three of rapid survey protocol devices by S1, wiring
A terminals, and three terminals are fixedly connected in switch matrix module, and three terminals and digital analog converter
ADC is electrically connected；
The signal of S2, the numerical value for obtaining ADC, three cables A, B, G are admitted in analog-digital converter ADC, are connected by multiple spot
Continuous analog-to-digital conversion measurement, can get each road ADC output valve, judges characteristics of signals by ADC output valve；
S3, identification low and high level, identify interrupted high level voltage, continuous high level voltage and low level voltage, this three
Kind voltage respectively corresponds the transmission signal of fuel charger, receives signal and earth signal line；These three signals refuel according to electric current loop
Machine communication line standard corresponds to different voltage ranges, after recognizing these three voltages, it is believed that acquisition data are correct；
S4, circuit switching, according to general purpose I/O control with voltage, signal, feature corresponding relationship, each mould is controlled by MCU
Quasi- switch completes routing matrix switching, selects correct communicating route, is then connected to MCU serial ports by level conversion；Serial ports
The protocol command for receiving fuel charger transmission, passes to LCD display by FSMC bus, can directly display fuel charger data simultaneously
Judge fuel charger agreement；
S5, normal use can make protocol communication carry out fuel charger real-time after MCU judges transit route
Management, acquisition and inquiry oil-filling data；
Preferably, the general GPIO of the switch matrix module in the step S1 and analog-digital converter ADC carry out serial ports company
It connects, level conversion is electrically connected in the switch matrix module, the electricity frequency conversion passes through serial port power with analog-digital converter ADC
Property connection.
Preferably, the tri- road adc data of step S2 Zhong carries out judgement selection respectively, and determination range is equipped with three groups
Between 3600-3800, C1 is set as 0, C2 and is set as 1, numerical value between 2300-2500 numerical value, and C1 is set as 1, C2 and is set as 0, and
Between 0-100, C1 is set as 1, C2 and is set as 1 numerical value.
Preferably, the FSMC:MCU in the step S4 has FSMC peripheral hardware, can configure it to simulate 8080 ports, use
To drive LCD liquid crystal display.
A kind of automatic quickly judgement equipment, including fuel charger and Switching Power Supply is additionally provided, the fuel charger passes through three tunnels
Input line is electrically connected in switch matrix module, and three tunnel input lines of the fuel charger are electrically connected in analog-digital converter
On ADC, three groups of input lines of the switch matrix module connection are electrically connected with level conversion respectively, the switch matrix module
With general GPIO data connection, the level conversion is shown by serial ports and MCU data connection, the MCU by FSMC and LCD
Data connection.
Preferably, the Switching Power Supply is fixed at the automatic lower right-hand corner for quickly determining equipment, and the LCD shows solid
It is fixed to be arranged at the lower right corner.
Preferably, the switch matrix inside modules are fixed with three groups of analog switches SW1, SW2, SW3, mould described in three groups
It is electrically connected with general purpose I/O on quasi- switch SW1, SW2, SW3, the side of analog switch SW1, SW2, SW3 described in three groups are all connected with
There are tri- groups of output signal routes of TX, RX, GND, TX, RX, GND output signal route described in three groups and level conversion are electrically connected.
Preferably, analog-digital converter ADC, general GPIO, serial ports, RAM, ROM and FSMC, institute are fixed on the MCU
It states GPIO and serial ports is data connection mouth, the RAM and ROM are storage equipment.
Technical effect and advantage of the invention:
The present invention gates test access using quickly identification wiring line sequence, by cable connection switch matrix module, and
Tri- tunnel wiring of fuel charger Shang is connected to three analog switches in switch matrix module, and on three analog switches
The selection of three tunnel wiring low and high levels of control is carried out equipped with general IO, and the IO on three-route road is connected after selecting, Neng Goushi
Existing protocol communication, realizes and carries out data interaction with oil machine, facilitate on-site identification fuel charger communications protocol, primary connection can be adjusted automatically
The whole order of connection avoids multiple wiring, accelerates dispenser management system debug speed；Recognition methods is simple, easy to operate, by line
Sequence identification and mapping function automatic discrimination, it is highly integrated, keep wiring more quick, accurately, analyzed by software, reaches automatic fast
Speed judges fuel charger communications protocol.
Detailed description of the invention
Fig. 1 is protocol devices schematic diagram of the invention；
Fig. 2 is switch matrix schematic diagram of the invention；
Fig. 3 is software operational flow diagram of the invention；
Fig. 4 is that matrix circuit of the invention judges figure.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Every other embodiment obtained is put, shall fall within the protection scope of the present invention.
A method of it is automatic quickly to determine data protocol, include the following steps:
Three any line sequences of communication cable A, B, G of fuel charger are first connected to the three of rapid survey protocol devices by S1, wiring
A terminals, and three terminals are fixedly connected in switch matrix module, and three terminals and digital analog converter
ADC is electrically connected；
The signal of S2, the numerical value for obtaining ADC, three cables A, B, G are admitted in analog-digital converter ADC, are connected by multiple spot
Continuous analog-to-digital conversion measurement, can get each road ADC output valve, judges characteristics of signals by ADC output valve；
S3, identification low and high level, identify interrupted high level voltage, continuous high level voltage and low level voltage, this three
Kind voltage respectively corresponds the transmission signal of fuel charger, receives signal and earth signal line；These three signals refuel according to electric current loop
Machine communication line standard corresponds to different voltage ranges, after recognizing these three voltages, it is believed that acquisition data are correct；
S4, circuit switching, according to general purpose I/O control with voltage, signal, feature corresponding relationship, each mould is controlled by MCU
Quasi- switch completes routing matrix switching, selects correct communicating route, is then connected to MCU serial ports by level conversion；Serial ports
The protocol command for receiving fuel charger transmission, passes to LCD display by FSMC bus, can directly display fuel charger data simultaneously
Judge fuel charger agreement；
S5, normal use can make protocol communication carry out fuel charger real-time after MCU judges transit route
Management, acquisition and inquiry oil-filling data；
Preferably, the general GPIO of switch matrix module and analog-digital converter ADC in step S1 carries out serial ports connection, open
It closes and is electrically connected with level conversion on matrix module, the conversion of electricity frequency is electrically connected with analog-digital converter ADC by serial ports.
By using above-mentioned technical proposal, input signal is carried out by the multiple spot progressive die by digital analog converter ADC at this
Number converted measurement realizes the output of ADC numerical value, then sends switch matrix module to by GPIO data-interface, realizes to line sequence
Judgement connection.
Preferably, tri- road adc data of step S2 Zhong carries out judgement selection respectively, and determination range is equipped with three groups of numerical value
Between 3600-3800, C1 is set as 0, C2 and is set as 1, numerical value between 2300-2500, and C1 is set as 1, C2 and is set as 0 and numerical value
Between 0-100, C1 is set as 1, C2 and is set as 1.
By using above-mentioned technical proposal, the numerical value of the ADC at this has different low and high levels in different ranges
Selection, and then realize the selection to the low and high level of input line, realize the signal input to input line, receive and ground wire is sentenced
It is disconnected.
Preferably, the FSMC in step S4 is MCU with FSMC peripheral hardware, it can be configured to simulate 8080 ports, to
Drive LCD liquid crystal display.
By using above-mentioned technical proposal, the FSMC at this can connect driving LCD liquid crystal display screen, carry out the straight of data
See display.
According to Fig. 1-2 additionally provide it is a kind of it is automatic quickly determine equipment, including fuel charger and Switching Power Supply, in order to realize pair
The low and high level of input signal is selected, so fuel charger is electrically connected at switch matrix module by three tunnel input lines
On, and three tunnel input lines of fuel charger are electrically connected on analog-digital converter ADC, it is real by analog-digital converter ADC
Now the ADC value of input signal is judged, three groups of input lines of switch matrix module connection are electrical with level conversion respectively
The level adjustment conversion of every group of route, switch matrix module and general GPIO data may be implemented in connection, the level conversion at this
Connection, level conversion show data connection by FSMC and LCD by serial ports and MCU data connection, MCU, and the FSMC at this can
To connect the operation and display data of driving LCD display.
Preferably, Switching Power Supply is fixed at the automatic lower right-hand corner for quickly determining equipment, LCD display fixed setting
At the lower right corner.
By using above-mentioned technical proposal, the Switching Power Supply at this can carry out the connection of power supply to equipment, so that equipment
Can be powered operation, and LCD display can show the communication data etc. of fuel charger.
Preferably, switch matrix inside modules are fixed with three groups of analog switches SW1, SW2, SW3, three groups of analog switches
Be electrically connected with general purpose I/O on SW1, SW2, SW3, the side of three groups of analog switches SW1, SW2, SW3 be respectively connected with TX, RX,
Tri- groups of output signal routes of GND, three groups of TX, RX, GND output signal routes and level conversion are electrically connected.
By using above-mentioned technical proposal, the judgement of the low and high level to three groups of routes is may be implemented in the setting at this, and
And three groups of routes are carried out with the adjusting and output of level.
Preferably, be fixed with analog-digital converter ADC, general GPIO, serial ports, RAM, ROM and FSMC on MCU, GPIO and
Serial ports is data connection mouth, and RAM and ROM are storage equipment.
By using above-mentioned technical proposal, the biography of the communication to data is may be implemented in the setting of general GPIO and serial ports at this
It is defeated, and RAM and ROM volume can store program body and data information.
According to Fig. 3-4, when in use, hardware device first choice can power on starting operation, then analog-digital converter
ADC module can receive three groups of signals that fuel charger transmission comes, and then judge signal data, when data are correct
It waits, the I/O state of calculating matrix circuit, and controls matrix circuit, the data transmitted and received by serial ports, in LCD display
On show, and judge the consistency of protocol frame, when data acquisition is abnormal and serial ports is not connected to data, all need
The conversion for re-starting ADC is carrying out flow operations, and is all being to judge model when judging adc data
Enclose it is interior carry out calculating judgement, and be equipped with three groups of numerical value between 3600-3800, C1 is set as 0, C2 and is set as 1, numerical value in 2300-
Between 2500, C1 be set as 1, C2 be set as 0 and numerical value between 0-100, C1 is set as 1, C2 and is set as 1, and then realizes to height electricity
Flat judgement.
Switch matrix module includes three analog switches SW1, SW2, SW3, and analog switch is controlled by the GPIO mouth of MCU,
Control flow is completed by code, and single analog switch can be connected all the way in the same time, which is connected and is controlled by general purpose I/O, C1
The low level of MCU general purpose I/O is represented with C2 by various combination come selection path, 0,1 represents the high level of MCU general purpose I/O.This
Sample is achieved that A, B, G-signal under the control of analog switch, and the automatic circuit switching and gating, computer terminal of carrying out can be received
To correct data.
Analog switch and control C1, C2 and logical relation such as following table corresponding with input signal.
L1, L2, L3 of three switches respectively link together, and corresponding three output ports.Three switch it is defeated
L1 is TX function by hardware definition out, and output L2 is RX function by hardware definition, and output L3 is GND function by hardware definition.
If first via input signal is TX, need to gate the TX of SW1, if first via input signal is RX,
It needs to gate the RX of SW1, if first via input signal is GND, needs to gate the GND of SW1；Second tunnel and third road
Signal corresponds to SW2 and SW3, control logic of the control mode with SW1.
The matched control switch of ADC conversion signal: three road ADC output valves, the output of three tunnels after ADC is converted, are being obtained
The control of corresponding three switches of value, per being all independent control all the way, corresponding relationship be see the table below:
| Input signal | A | B | G |
| Corresponding A DC output | First via ADC output | Second road ADC output | Third road ADC output |
| Corresponding control switch | SW1 | SW2 | SW3 |
The signal voltage value on each road can be calculated by the output valve of ADC, to judge each road signal characteristic and signal
Definition, by signal definition, the gating of control switch is that switch control pin selects correct switch ways by MCU.
Following table be general purpose I/O control and the voltage of one-way switch, signal, feature corresponding relationship, other each way switch judgements
It is identical with control logic.
| Signal wire defines title | Fuel charger sends TX | Fuel charger receives RX | Ground wire GND |
| Signal characteristic | Interrupted high level voltage | Continuous high level voltage | Zero level |
| Signal voltage value | 12V | 8V | 0V |
| ADC output valve range | 3600-3800 | 2300-2500 | 0-100 |
| Switching gate | The TX of switch is gated | The RX of switch is gated | The GND of switch is gated |
| Switch control C1 | 0 | 1 | 1 |
| Switch control C2 | 1 | 0 | 1 |
Signal is input to the process of IO: after calculating matrix circuit I O, MCU controls analog switch, gates each communication
Route.After receiving data, judge whether data meet frame format by program.
The process that control IO is input to from signal is exemplified below:
The course of work: three that three any line sequences of connection A, B, G of fuel charger are connected to rapid survey protocol devices connect
Line end, subsequent signal are admitted to analog-digital converter, by multiple spot continuous modulus converted measurement, can get each road ADC output valve, lead to
It crosses ADC output valve and judges characteristics of signals, identify interrupted high level voltage, continuous high level voltage and low level voltage, this
Three kinds of voltages respectively correspond the transmission signal of fuel charger, receive signal and earth signal line.These three signals add according to electric current loop
Oil machine communication line standard corresponds to different voltage ranges, after recognizing these three voltages, it is believed that acquisition data are correct.
According to general purpose I/O control and voltage, signal, feature corresponding relationship, each analog switch is controlled by MCU and completes line
Road Inverse problem selects correct communicating route, is then connected to MCU serial ports by level conversion.Serial ports receives fuel charger
The protocol command of transmission passes to LCD display by FSMC bus, can directly display fuel charger data and judge fuel charger
Agreement.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (8)
1. a kind of automatic method for quickly determining data protocol, characterized by the following steps:
S1, wiring, three any line sequences of communication cable A, B, G of fuel charger are first connected to rapid survey protocol devices three connect
Line end, and three terminals are fixedly connected in switch matrix module, and three terminals and digital analog converter ADC into
Row is electrically connected；
The signal of S2, the numerical value for obtaining ADC, three cables A, B, G are admitted in analog-digital converter ADC, by the multiple spot progressive die
Number converted measurement, can get each road ADC output valve, judges characteristics of signals by ADC output valve；
S3, identification low and high level, identify interrupted high level voltage, continuous high level voltage and low level voltage, these three electricity
Pressure respectively corresponds the transmission signal of fuel charger, receives signal and earth signal line；These three signals are logical according to electric current loop fuel charger
Letter line standard corresponds to different voltage ranges, after recognizing these three voltages, it is believed that acquisition data are correct；
S4, circuit switching, according to general purpose I/O control with voltage, signal, feature corresponding relationship, by MCU control it is each simulation open
It closes and completes routing matrix switching, select correct communicating route, be then connected to MCU serial ports by level conversion；Serial ports receives
The protocol command sent to fuel charger, passes to LCD display by FSMC bus, can directly display fuel charger data and judge
Fuel charger agreement out；
S5, normal use, after MCU judges transit route, so that protocol communication carries out real-time management, acquisition to fuel charger
With inquiry oil-filling data.
2. the automatic method for quickly determining data protocol according to claim 1, it is characterised in that: opening in the step S1
The general GPIO for closing matrix module and analog-digital converter ADC carries out serial ports connection, is electrically connected in the switch matrix module
Level conversion, the electricity frequency conversion are electrically connected with analog-digital converter ADC by serial ports.
3. the automatic method for quickly determining data protocol according to claim 1, it is characterised in that: three in the step S2
Road adc data carries out judgement selection respectively, and determination range is equipped with three groups of numerical value between 3600-3800, and C1 is set as 0, C2
Be set as 1, numerical value between 2300-2500, C1 be set as 1, C2 be set as 0 and numerical value between 0-100, C1 is set as 1, C2 and is set as
1。
4. the automatic method for quickly determining data protocol according to claim 1, it is characterised in that: in the step S4
FSMC:MCU has FSMC peripheral hardware, 8080 ports is simulated, to drive LCD liquid crystal display.
5. a kind of automatic quickly judgement equipment, it is characterised in that: including fuel charger and Switching Power Supply, the fuel charger passes through three tunnels
Input line is electrically connected in switch matrix module, and three tunnel input lines of the fuel charger are electrically connected in analog-digital converter
On ADC, three groups of input lines of the switch matrix module connection are electrically connected with level conversion respectively, the switch matrix module
With general GPIO data connection, the level conversion is shown by serial ports and MCU data connection, the MCU by FSMC and LCD
Data connection.
6. automatic quickly judgement equipment according to claim 5, it is characterised in that: the Switching Power Supply is fixed at certainly
The dynamic lower right-hand corner for quickly determining equipment, the LCD, which is shown, to be fixed at the lower right corner.
7. automatic quickly judgement equipment according to claim 5, it is characterised in that: the switch matrix inside modules are fixed
Equipped with three groups of analog switch SW1, SW2, SW3, it is electrically connected with general purpose I/O on analog switch SW1, SW2, SW3 described in three groups,
The side of analog switch SW1, SW2, SW3 described in three groups are respectively connected with tri- groups of output signal routes of TX, RX, GND, described in three groups
TX, RX, GND output signal route and level conversion are electrically connected.
8. automatic quickly judgement equipment according to claim 5, it is characterised in that: be fixed with modulus on the MCU and turn
Parallel operation ADC, general GPIO, serial ports, RAM, ROM and FSMC, the GPIO and serial ports are data connection mouth, and the RAM and ROM are
Store equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910841401.2A CN110488138A (en) | 2019-09-06 | 2019-09-06 | A method of it is automatic quickly to determine equipment line sequence and data protocol |
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| CN201910841401.2A CN110488138A (en) | 2019-09-06 | 2019-09-06 | A method of it is automatic quickly to determine equipment line sequence and data protocol |
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| CN112925234A (en) * | 2021-01-21 | 2021-06-08 | 东莞讯滔电子有限公司 | Line sequence detection equipment and method thereof |
| WO2022247460A1 (en) * | 2021-05-25 | 2022-12-01 | 中兴通讯股份有限公司 | Printed circuit board, terminal, method, apparatus and storage medium |
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Application publication date: 20191122 |