CN105371969B - A kind of track plates temperature remote monitoring system - Google Patents
A kind of track plates temperature remote monitoring system Download PDFInfo
- Publication number
- CN105371969B CN105371969B CN201510887963.2A CN201510887963A CN105371969B CN 105371969 B CN105371969 B CN 105371969B CN 201510887963 A CN201510887963 A CN 201510887963A CN 105371969 B CN105371969 B CN 105371969B
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- Prior art keywords
- unit
- power supply
- temperature
- monitoring system
- protection circuit
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/026—Means for indicating or recording specially adapted for thermometers arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
Abstract
The invention discloses a kind of track plates temperature remote monitoring system, it includes power supply unit, main control unit and some temperature sampling units, the output all the way of said supply unit is connected with main control unit, another way output is connected with isolated from power unit, the main control unit is connected with electromagnetic isolation chip, the electromagnetic isolation chip is connected by 485 buses with each temperature sampling unit, and the corresponding multiple temperature sensors of each temperature sampling unit are connected；The isolated from power unit is connected with each temperature sampling unit, also, the main control unit has DTU wireless data transparent transmission modules, and the temperature sampling unit uses annular electric supply.It can realize that strong antijamming capability, maintenance cost be low, high efficiency remotely monitors track plate temperature using device of the present invention, there is obvious practical value.
Description
Technical field
The present invention relates to a kind of temperature monitoring system, is to be related to a kind of track plates temperature remote monitoring system specifically, category
In temperature monitoring technique field.
Background technology
The temperature of high-speed railway track plate refers mainly to 2 aspects:First, the gradient of temperature that track plates are overall, this can cause rail
Overall stretch occurs for guidance tape；Second, temperature alternation of the track plates along its short transverse is thermograde, this is to cause track plates
The main reason for generation warpage, crack of surface layer and plate bottom separate, in order to avoid influence of the temperature to track plates so that producing safety
Hidden danger to track plate temperature, it is necessary to carry out whole day measurement, to monitor track plates temperature conditions in real time.
At present, it is by wireless transparent transmission module to realize track plates temperature remote monitoring, the temperature value of acquisition is passed through wireless
Network is sent in remote server in real time.Existing track plates remote supervision system has that antijamming capability is strong, supply lines
Pressure drop is larger on line caused by longer, cause sampling unit can not normal work, so that related monitoring requirements can not be met；Together
When, the communication interface of existing track plates remote supervision system is limited, it is difficult to multiple parallel tasks are handled, once Transmission system is not
Energy normal work, then whole monitoring system can not work, so that maintenance cost is very high.
The content of the invention
In view of the above-mentioned problems existing in the prior art, it is an object of the invention to provide a kind of strong antijamming capability, safeguard into
This low, efficient track plates temperature remote monitoring system.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of track plates temperature remote monitoring system, including power supply unit, main control unit and some temperature sampling units, institute
The output all the way for stating power supply unit is connected with main control unit, another way output and the isolated from power unit phase of said supply unit
Connection, the main control unit are connected with electromagnetic isolation chip, and the electromagnetic isolation chip passes through 485 buses and each temperature
Sampling unit is connected, and the corresponding multiple temperature sensors of each temperature sampling unit are connected；The isolated from power
Unit is connected with each temperature sampling unit, also, the main control unit has DTU wireless data transparent transmission modules, institute
State temperature sampling unit and use annular electric supply.
Preferably, said supply unit includes solar energy input power supply unit, batteries to store energy unit and defeated
Go out power supply unit；The solar energy input power supply unit includes some solar panels, MPPT controller and dc bus,
If the batteries to store energy unit connects including dry battery, some battery charge-discharge control circuits and some input and output
Mouthful, the output power supply unit includes some regulating circuits in parallel；The output end of each solar panel with it is described
The input of MPPT controller is connected, and the output end of the MPPT controller is connected with dc bus, the dc bus
It is connected with input/output interface, each input/output interface is connected with a battery charge-discharge control circuit, often
One battery charge-discharge control circuit is connected with least two batteries, the output end of each battery with one
The input of regulating circuit is connected, the output end output end in parallel for forming power supply unit of all regulating circuits.
As further preferred scheme, the solar energy input power supply unit also includes solar powered safeguard protection electricity
Road, the solar powered safety protective circuit is between the MPPT controller and dc bus；The batteries to store energy
Unit also includes storage battery safe protection circuit, and the storage battery safe protection circuit is between the input/output interface and electric power storage
Between the charge-discharge control circuit of pond；The output power supply unit also includes some commutation diodes, each regulating circuit it is defeated
Go out end with a commutation diode to be connected, the output end output end in parallel for forming power supply unit of all commutation diodes.
As further preferred scheme, the solar powered safety protective circuit includes current foldback circuit and overheat is protected
Protection circuit；The storage battery safe protection circuit includes short circuit protection circuit, reverse-connection protection circuit, overcharge protection circuit and put excessively
Protection circuit.
Preferably, the main control unit is STM32F107VC processors, using real-time multi-task operating system
(RTOS)。
Preferably, the main control unit also includes touch screen display unit and SD storage cards.
Preferably, the isolated from power unit includes DC-DC insulating power supplies chip and LDO voltage stabilizing chips, makes 12V
It is+12V DC insulating power supplies that power supply exports after DC-DC insulating power supply chips, then passes through+12V DC insulating power supplies
Cross the dc source that LDO voltage stabilizing chips are converted into+5V DC.
Preferably, the electromagnetic isolation chip selects ADM2582E or ADM2587E chips.
Preferably, the temperature sampling unit is the single-chip microcomputer of STM8L series, has 485 EBIs, timesharing
Control interface, 485 bus transmission interfaces and 485 bus receiving interfaces.
Preferably, 485 EBI includes 485 bus interface circuits based on MAX485 chips.
Compared to prior art, advantageous effects of the invention are：
Track plates temperature remote monitoring system provided by the invention, by using isolation powering mode, improve anti-interference
Ability, enhance the robustness of monitoring system；In addition, by using the Bus isolation communication modes of electromagnetic isolation chip, subtracting
On the premise of mini system volume, the isolation communication of system is realized, the independence between each sampling unit has been ensured, has reduced and adopt
Dependency degree between sample unit, improve the reliability of monitoring system；Especially, by using ring node power supply communication mode,
I.e.：It is powered, efficiently solves because of pressure drop on line caused by supply lines is longer respectively at the input and output port of bus
Sampling unit caused by larger can not normal work the problem of；In a word, anti-interference energy can be realized using device of the present invention
Power is strong, maintenance cost is low, high efficiency remotely monitors track plate temperature, has obvious practical value.
Brief description of the drawings
Fig. 1 is a kind of structural representation of track plates temperature remote monitoring system provided by the invention；
Fig. 2 is the schematic block circuit diagram of the power supply unit described in embodiment；
Fig. 3 is the structural representation of the solar energy input power supply unit described in embodiment；
Fig. 4 is the structural representation of the batteries to store energy unit described in embodiment；
Fig. 5 is the schematic diagram of the output power supply unit structure and its annexation described in embodiment；
Fig. 6 is the circuit diagram of the isolated from power unit described in embodiment；
Fig. 7 is the circuit diagram of the temperature sampling unit described in embodiment；
Fig. 8 is the circuit diagram of 485 EBIs described in embodiment.
Label is schematically as follows in figure：1st, power supply unit；11st, solar energy input power supply unit；111st, solar panel；
112nd, MPPT controller；113rd, dc bus；114th, solar powered safety protective circuit；1141st, current foldback circuit；
1142nd, overheating protection circuit；12nd, batteries to store energy unit；121st, battery；122nd, battery charge-discharge control circuit；123、
Input/output interface；124th, storage battery safe protection circuit；1241st, short circuit protection circuit；1242nd, reverse-connection protection circuit；1243、
Overcharge protection circuit；1244th, over-discharge protection circuit；13rd, power supply unit is exported；131st, regulating circuit；132nd, commutation diode；2、
Main control unit；21st, DTU wireless datas transparent transmission module；22nd, touch screen display unit；23rd, SD storage cards；3rd, temperature sampling unit；
4th, isolated from power unit；5th, electromagnetic isolation chip；6th, 485 bus；7th, temperature sensor.
Embodiment
Technical scheme is done below in conjunction with accompanying drawing specific embodiment and further clearly and completely described.
As shown in Figure 1：A kind of track plates temperature remote monitoring system that the present embodiment provides, including power supply unit 1, master control
Unit 2 and some temperature sampling units 3, the output all the way of said supply unit 1 are connected with main control unit 2, and the power supply is single
The another way output of member 1 is connected with isolated from power unit 4, and the main control unit 2 is connected with electromagnetic isolation chip 5, described
Electromagnetic isolation chip 5 is connected by 485 buses 6 with each temperature sampling unit 3, each temperature sampling unit 3 and its
Corresponding multiple temperature sensors 7 are connected；The isolated from power unit 4 is connected with each temperature sampling unit 3, and
And the main control unit 2 has DTU wireless data transparent transmissions module 21, the temperature sampling unit 3 uses annular electric supply.
As shown in Figure 2：Described power supply unit 1 include solar energy input power supply unit 11, batteries to store energy unit 12 with
And output power supply unit 13；The solar energy input power supply unit 11 includes some solar panels 111, MPPT controller
112 and dc bus 113, if the batteries to store energy unit 12 includes dry battery 121, some accumulator cell charging and dischargings control
Circuit 122 and some input/output interfaces 123, the output power supply unit 13 include some regulating circuits 131 in parallel；Often
Input of the output end of one solar panel 111 with the MPPT controller 112 is connected, the MPPT controller
112 output end is connected with dc bus 113, and the dc bus 113 is connected with input/output interface 123, each
Input/output interface 123 is connected with a battery charge-discharge control circuit 122, each accumulator cell charging and discharging control electricity
Road 122 is connected with least two batteries 121, the output end of each battery 121 with regulating circuit 131
Input is connected, the output end output end in parallel for forming power supply unit of all regulating circuits 131.
The main control unit 2 is STM32F107VC processors, and the processor is Flash spaces and the 64K for having 256K
RAM memory, and with 100 pins abundant Peripheral Interface low power processor；When using real-time multi-task operation system
Unite (RTOS), multiple parallel tasks can be handled simultaneously, realize and dispatch and cooperate without coupling between multiple tasks.By acquisition
Temperature data is sent in remote server in real time by DTU wireless data transparent transmissions module 21 by GPRS network, so as to reality
The long-range monitoring of existing track plate temperature.
Preferably, the main control unit 2 also includes touch screen display unit 22 and SD storage cards 23.
The electromagnetic isolation chip 5 selects ADM2582E or ADM2587E chips, and such chip can allow 256 transmitting-receiving sections
Point access bus, isolation voltage 2500V, offer ± 15kV ESD defencive functions on input/output pin, possess it is really anti-therefore
The reception input of fault device, and more than the high common mode transient state rejection abilities of 25kV/ μ s, 485 buses and power supply can be achieved
The full isolation communication of power supply.
Embodiment
Power supply unit 1 described in the present embodiment include solar energy input power supply unit 11, batteries to store energy unit 12 and
Export power supply unit 13；Wherein：
The structure of described solar energy input power supply unit 11 is as shown in Figure 3：Including some solar panels 111,
MPPT controller 112, dc bus 113 and solar powered safety protective circuit 114, each solar panel 111
Input of the output end with the MPPT controller 112 is connected, and the MPPT controller 112 is protected with solar powered safety
Protection circuit 114 is connected, and the output end of the solar powered safety protective circuit 114 is connected with dc bus 113, and institute
The solar powered safety protective circuit 114 stated includes current foldback circuit 1141 and overheating protection circuit 1142；
The structure of described batteries to store energy unit 12 is as shown in Figure 4：If if filled including dry battery 121, dry battery
Charge/discharge control circuit 122, some input/output interfaces 123 and some storage battery safe protection circuits 124, each input and output
Interface 123 is connected with a battery charge-discharge control circuit 122, and each battery charge-discharge control circuit 122 is equal
It is connected with least two batteries 121, if being connected in series with each other between dry battery 121, each two battery 121 forms one
Group, it is connected with a battery charge-discharge control circuit 122, each battery charge-discharge control circuit 122 and a storage
Cell safety protection circuit phase 124 connects, each storage battery safe protection circuit 124 and a phase of input/output interface 123
Connection, each input/output interface 123 is connected with the dc bus 113, and the storage battery safe protection circuit 124
Including short circuit protection circuit 1241, reverse-connection protection circuit 1242, overcharge protection circuit 1243 and over-discharge protection circuit 1244；
The structure of described output power supply unit 13 is as shown in Figure 5：Including some regulating circuits 131 in parallel and some whole
Diode 132 is flowed, the output end of the input of each regulating circuit 131 with a battery 121 is connected, each tune
The output end of volt circuit 131 is connected with a commutation diode 132, the output end parallel connection shape of all commutation diodes 132
Into the output end of power supply unit.
The circuit diagram of isolated from power unit described in the present embodiment is as shown in Figure 6：Including DC-DC insulating power supply chips
B1212S-1W and LDO voltage stabilizing chips 78L05,12V power supply exports after DC-DC insulating power supply chips B1212S-1W
+ 12V DC insulating power supplies ,+12V DC insulating power supplies are then made to be converted into+5V DC direct current by LDO voltage stabilizing chips 78L05
Source, so as to be powered for temperature sampling unit 3.In order to prevent power supply reverse connecting protection, diode D4 can be increased in circuit, separately
Outside, the electric capacity E1, E2 and E3 in circuit are to be used for energy storage and filtering；The circuit can make the insulation of each temperature sampling unit 3
Voltage class reaches more than 1KV, so as to ensure the noiseless collection between each temperature sampling unit 3.
The circuit diagram of temperature sampling unit described in the present embodiment is as shown in Figure 7：It is to be based on super low-power consumption chip STM8L types
Number single-chip microcomputer, there is 485 EBIs (pin PD 3), Time-sharing control interface (pin PD 4), 485 bus transmission interfaces (pipe
Pin PD 5) and 485 bus receiving interfaces (pin PD 6).
The circuit diagram of 485 EBIs described in the present embodiment is as shown in Figure 8：485 bus interface circuit is to be based on
MAX485 chips, main control unit 2 can realize reading and the hair to temperature sampling unit 3 by control reception and transmission pin PD 3
Control is sent, so as to ensure that the Time-sharing control of 485 buses.Simultaneously in order to increase the output driving ability of system, increase by two
4.7K pull-up and pull down resistor, and in output end by two 10 ohm of resistance, to realize the matching of outlet line and short
Protect on road.
When using single node power supply mode, its result is as shown in table 1：Supply voltage by test system is 12V, is supplied
Electric current is 0.07A, and the power consumption of system is 0.84W；When input voltage is reduced into 10V, the input current of system remains as
0.07A, but the power consumption of system is only 0.7W；When the input voltage of the system of reduction, the input current of system does not increase
Add, the power of single temperature sampling unit is decreased to 0.7W by 0.84W, reduces 16%；Therefore, in order to reduce the work(of system
Consumption reduces the input voltage of system, it is necessary under safeguards system normal work.
The single temperature sampling cell power consumption of table 1
However, because power supply uses bus structures, the supply voltage of system can have line pressure drop because of the access of power supply load.
Now, the supply voltage of increase system is needed again.It can thus be appreciated that certain contradiction between supply voltage and line pressure drop be present.For
Solves the contradiction, the present invention uses ring node power supply communication mode, i.e.,：Punished in the input and output port of communication bus
It is not powered, voltage value is as shown in table 2 after test.
Table 2 is contrasted using ring node power supply with single node power supply mode
From table 2：During using single node power supply mode, input voltage 12V, terminal voltage is only 8.5V, line pressure drop
For 3.5V, cause the voltage of terminal temperature sampling module relatively low, or even can not normal work；When using annular electric supply mode,
Input node voltage is 12V, and end node voltage is 10.6V, and line pressure drop is 1.4V, only single temperature sampling unit wires pressure drop
40%, it is ensured that each temperature sampling unit normal work, therefore efficiently solve because of pressure drop on line caused by supply lines is longer
It is larger so as to cause sampling unit can not normal work the shortcomings that.
Communication bus uses 485 buses, sets that communication frequency is each as 200ms, test and statistics by 12 hours,
The communication deviation ratio of system is less than 0.1%.After increase communication verification, the error rate of system can be controlled 0.01%, can be expired
The requirement of sufficient communication acquisition.
It is visible in summary：Track plates temperature remote monitoring system provided by the invention, by using isolation powering mode,
Antijamming capability is improved, enhances the robustness of monitoring system；In addition, lead to by using the Bus isolation of electromagnetic isolation chip
News mode, on the premise of system bulk is reduced, the isolation communication of system is realized, has ensured the independence between each sampling unit
Property, the dependency degree between sampling unit is reduced, improves the reliability of monitoring system；Especially, supplied by using ring node
Electric communication modes, i.e.,：It is powered respectively at the input and output port of bus, efficiently solves and made because supply lines is longer
On into line pressure drop it is larger caused by sampling unit can not normal work the problem of；Strong antijamming capability, maintenance cost can be achieved
Low, high efficiency remotely monitors track plate temperature, has obvious practical value.
It is last it is necessarily pointed out that：It the foregoing is only the preferable embodiment of the present invention, but the present invention
Protection domain be not limited thereto, any one skilled in the art the invention discloses technical scope in,
The change or replacement that can be readily occurred in, it should all be included within the scope of the present invention.
Claims (8)
1. a kind of track plates temperature remote monitoring system, including power supply unit, main control unit and some temperature sampling units, described
The output all the way of power supply unit is connected with main control unit, and the another way output of said supply unit is connected with isolated from power unit
Connect, the main control unit is connected with electromagnetic isolation chip, and the electromagnetic isolation chip is adopted by 485 buses and each temperature
Sample unit is connected, and the corresponding multiple temperature sensors of each temperature sampling unit are connected；The isolated from power list
Member is connected with each temperature sampling unit, also, the main control unit has DTU wireless data transparent transmission modules, described
Temperature sampling unit uses annular electric supply；Said supply unit include solar energy input power supply unit, batteries to store energy unit with
And output power supply unit；It is characterized in that：
The solar energy input power supply unit includes some solar panels, MPPT controller, dc bus and solar energy and supplied
Electricity security protection circuit, if the batteries to store energy unit includes dry battery, some battery charge-discharge control circuits, some
Input/output interface and storage battery safe protection circuit, the output power supply unit include some regulating circuits in parallel and some
Commutation diode；Input of the output end of each solar panel with the MPPT controller is connected, described
The output end of MPPT controller is connected with dc bus, and the dc bus is connected with input/output interface, the sun
Energy power supply safety protection circuit is between the MPPT controller and dc bus；Each input/output interface with one
Battery charge-discharge control circuit is connected, and each battery charge-discharge control circuit is connected with least two batteries
Connect, the storage battery safe protection circuit is between the input/output interface and battery charge-discharge control circuit；It is each
Input of the output end of individual battery with a regulating circuit is connected, the output end of each regulating circuit with one
Commutation diode is connected, the output end output end in parallel for forming power supply unit of all commutation diodes.
2. track plates temperature remote monitoring system according to claim 1, it is characterised in that：The solar powered safety
Protection circuit includes current foldback circuit and overheating protection circuit；The storage battery safe protection circuit includes short circuit protection electricity
Road, reverse-connection protection circuit, overcharge protection circuit and over-discharge protection circuit.
3. track plates temperature remote monitoring system according to claim 1, it is characterised in that：The main control unit is
STM32F107VC processors, using real-time multi-task operating system.
4. the track plates temperature remote monitoring system according to claim 1 or 3, it is characterised in that：The main control unit is also
Including touch screen display unit and SD storage cards.
5. track plates temperature remote monitoring system according to claim 1, it is characterised in that：The isolated from power unit bag
Include DC-DC insulating power supplies chip and LDO voltage stabilizing chips.
6. track plates temperature remote monitoring system according to claim 1, it is characterised in that：The electromagnetic isolation chip choosing
With ADM2582E or ADM2587E chips.
7. track plates temperature remote monitoring system according to claim 1, it is characterised in that：The temperature sampling unit is
The single-chip microcomputer of STM8L series, has 485 EBIs and Time-sharing control interface.
8. track plates temperature remote monitoring system according to claim 7, it is characterised in that：The 485 EBI bag
Include 485 bus interface circuits based on MAX485 chips.
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| CN201510887963.2A CN105371969B (en) | 2015-12-04 | 2015-12-04 | A kind of track plates temperature remote monitoring system |
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| CN201510887963.2A CN105371969B (en) | 2015-12-04 | 2015-12-04 | A kind of track plates temperature remote monitoring system |
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| CN105371969B true CN105371969B (en) | 2018-02-23 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525259A (en) * | 2016-12-28 | 2017-03-22 | 上海工程技术大学 | System for remote acquisition of temperature-field key parameters of track board |
| CN107172779A (en) * | 2017-06-07 | 2017-09-15 | 刘胜泉 | A kind of intelligent linkage controller for road lamp |
| CN110015318B (en) * | 2019-03-12 | 2022-10-25 | 北京鼎兴达信息科技股份有限公司 | Real-time monitoring system and method for track slab arching and freezing damage based on Internet of things |
| CN110596341A (en) * | 2019-06-28 | 2019-12-20 | 南京天补智联信息科技有限公司 | Integrated soil and surrounding environment detection system |
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