CN205692368U - A kind of wireless multi-environmental parameter recording transmitter - Google Patents

Abstract

This utility model relates to a kind of wireless multi-environmental parameter recording transmitter, belonging to environmental physics measurement and data communication technology field, this transmitter includes: n analogue signal measurement sensor, n multiparameter analog channel, m numeral signal measurement sensor, m multiparameter digital channel, external data memory, external crystal-controlled oscillation device, button, outside real-time clock, wireless module, SD/TF card module for reading and writing, power control circuit, RS485 modular converter, externally fed module and center processor with battery；Above-mentioned each device is in addition to all measurement sensors and center processor itself, and remaining is connected with center processor respectively.This utility model has that mounting means is flexible, communication speed is high, reliability is high, power consumption is low, wireless data transmission, can transmitting real-time data again can log history data, because can measure various environmental parameters and then effectively control the advantages such as cost simultaneously.

Description

A kind of wireless multi-environmental parameter recording transmitter

Technical field

This utility model belongs to environmental physics measurement and data communication technology field, is wirelessly transferred merit particularly to having The design of the in-situ measuring transmitter of energy and data real time record function.

Background technology

Transmitter has use, various fields to have the actual application of transmitter in the every aspect of life, along with The development of Internet of Things.Transmitter, sensor, executor uses more universal.Sensor is most crucial perception device, sensor Integration through functions such as data scaling and data transmission is the formation of transmitter, and after the accuracy of perception data and perception Data output form is then the Core Feature that transmitter is to be done.By transmitter, sensor is encapsulated into instrument or sets Standby, thus avoid and be easy to, because sensor is relatively fragile, the shortcoming damaged.Additionally, sensor shape after encapsulation The transmitter become, life-span and stability also substantially increase.General sensor output form is nothing but numeral or the electricity of simulation Signal, it is the basic function of transmitter that these signals carry out conversion change, stores, transmits, analysis etc. operates.

In daily life, increasing transmitter is actually applied in engineering, for various measurement parameters, permissible Use different transmitters to measure, such as the when of measuring temperature, just can use temperature transmitter with TT&C system even Connect, thus complete corresponding measurement demand and function.In daily life and engineering practice, the application of transmitter is the most general Time, and the problem the most also having much reality.

Transmitter uses wired mode communication the most commonly used at present, and TT&C system stability is relative to other transmission means more Adding reliable and stable, the transmitter using wired mode communication in many occasions is still the most replaceable preferred option.Due to nothing The unpredictability of line communication makes the application of independent wireless mode communication transmitter relative to wired mode with relative instability Lack many.But along with the continuous exploration of wireless technology, the transmitter of current wireless mode communication is the most gradually applied and is come.

On the other hand, current transmitter is relatively independent, and the ambient parameter of measurement is the most single, and practical situation is very It is probably and measures various environmental parameters (such as temperature, humidity, carbon dioxide, wind speed, atmospheric pressure, intensity of illumination, noise etc. simultaneously Ambient parameter is measured simultaneously), this will ask transmitter can complete multi-channel data acquisition simultaneously and (generally comprise analog-and digital-two The data acquisition of the mode of kind), and each circuit-switched data is sent to inside transmitter in real time, re-use wired or wireless mode by data It is sent to detection and control terminal.The fields such as the Architecural Physics of reality, chemical, health care, building automation need to measure many and plant The ambient parameter of class, if every kind of transmitter is all respectively mounted, can be greatly increased cost, increase the complexity of TT&C system simultaneously Degree, is highly detrimental to that TT&C system is integrated and site operation.

Secondly, in Practical Project, transmitter has been applied quite varied, if but TT&C system encounter problems, such as observing and controlling system During the system situation such as wire communication interruption, transmitter has reformed into the equipment that nobody shows interest in, TT&C system normal data acquisition and under Reaching the basic acquisition controlling operations such as control command and be absorbed in interim paralysis due to temporarily interrupting of wired communication link, this is in many Important control field is extremely dangerous.When transmitter cannot superior TT&C system transmit data time, TT&C system can Will be unable to obtain effective guarantee by property, the method separately through wired mode increase TT&C system reliability can select heat at present Backup (identical transmitter multiple stage is installed in the most same position), but do so can increase the extra cost of TT&C system, And cost is double.

The most many transmitters still use analog quantity to carry out signal transmission expression, the hookup wire but do so can be multiplied The quantity of cable, in many large projects, installs cable more many TT&C systems cost the highest；Simultaneously because TT&C system specification is not Enough causing wiring confusion or misarrangement difficulty, installing engineering cost and later maintenance cost are the highest.

Transmitter on the market the most more emphasizes real-time, and each transmitting procedure of data only has important meaning to current time Justice.And the occasion easily gone wrong in many, if not can know that historical data, then how to optimize TT&C system and just have no way of Talk.Log history data are common in detection and control terminal, but often transmitter end does not carry out historgraphic data recording, and this is also Cause the major reason that why detection and control terminal data are had no way of after artificially revising or deleting searching problem.For transmitter Historical data recording function has increasing need for being integrated in transmitter inside rather than only by detection and control terminal.

If solution the problems referred to above, transmitter can be made to welcome a new more polynary application market.

Utility model content

The purpose of this utility model is to overcome shortcoming present in above-mentioned prior art, it is provided that a kind of wireless multi-ring Border reference record formula transmitter, this transmitter has that mounting means is flexible, communication speed is high, reliability is high, power consumption is low, both Can transmitting real-time data again can log history data, because can measure various environmental parameters and then effectively to control cost etc. excellent simultaneously Point.

The technical solution of the utility model is:

A kind of wireless multi-environmental parameter recording transmitter, it is characterised in that this transmitter includes: n analogue signal is surveyed Amount sensor, n multiparameter analog channel, m numeral signal measurement sensor, m multiparameter digital channel, external number According to memorizer, external crystal-controlled oscillation device, button, outside real-time clock, wireless module, SD/TF card module for reading and writing, power control circuit, RS485 modular converter, externally fed module and center processor；The annexation of above-mentioned each device is: at each multiparameter mould The front end intending passage and multiparameter digital channel connects a corresponding measurement sensor, all multiparameter analog channels, institute There are multiparameter digital channel, external data memory, external crystal-controlled oscillation device, button, the outside real-time clock with battery, wireless mould Block, SD/TF card module for reading and writing, RS485 modular converter, externally fed module and power control circuit respectively with center processor Connect, power control circuit respectively with all multiparameter analog channels, all multiparameter digital channels, external data memory, Wireless module is connected, externally fed module respectively with button, outside real-time clock with battery, SD/TF card module for reading and writing, RS485 modular converter, power control circuit are connected；RS485 modular converter is connected with outside TT&C system by RS-485 bus； Externally fed module is connected with external power source by power line.

Described center processor mainly include following hardware module: SCI, SPI, CPU, interface I/O, ADC, power management, High-frequency clock and low-speed clock；Wherein, SCI with RS485 modular converter is connected, and SPI is connected with wireless module, and interface I/O is respectively With all multiparameter digital channels, external data memory, button, the outside real-time clock with battery, SD/TF card read-write mould Block, power control circuit connect, and ADC is connected with all multiparameter analog channels, and power management is connected with externally fed module, low Speed clock is connected with high-frequency clock, and low-speed clock is connected with external crystal-controlled oscillation device.

Feature of the present utility model and beneficial effect:

The one wireless multi-environmental parameter recording transmitter that the utility model proposes, can transmitting real-time data can remember again Record historical data, this recording process completes inside transmitter, can store data for a long time by SD/TF card, and use number According to time quickly derive historical data with document form, can quickly be checked the file format of this historical data by computer, and to this Data file carries out backing up, analyzes, arranges, and this feature difference does not record in a transmitting real-time data of conventional transmitter product and goes through History data, and become log history data while transmitting real-time data, this change will make transmitter obtain preferably should With；Arranging the outside real-time clock of power down not drop-out time, even if transmitter power down, the internal battery being equipped with is the most permissible simultaneously Keep the operating of outside real-time clock so that transmitter is when starting every time, and clock is all accurate, and do so also ensure that change The packet sending device record contains the important informations such as timing node, so that transmitter has this important merit of historgraphic data recording Energy；Wireless data communication function is another Core Feature, can send out measuring multi-environmental parameter data in real time wirelessly Deliver in far-end TT&C system, or transmit data to wireless display terminal, facilitate scene to check and safeguard, such as remote measurement and control system System can access the Internet, then remotely can also real time inspection scene ruuning situation；Owing to can measure multi-environment ginseng simultaneously Number, overall measurement scheme cost also decreases, and installs and measures cost and be effectively controlled；This transmitter uses RS-485 to connect Mouth, as transmission means, uses " GB/T 19582.1-2008 industrial automation network based on Modbus agreement " specification protocol Ensure the compatibility of product as communications protocol further, one bus of RS-485 interface support simultaneously has mounted many playscripts with stage directions and becomes Sending device, timesharing sub address completes data communication, separate, does not interfere with each other, and then can reduce line in projects in a large number Cable length of arrangement wire, convenient investigation line fault, reduce further TT&C system complexity；By using cable data to pass simultaneously The defeated mode with wireless data transmission, can make system operation reliability farthest improve.

In sum, the one wireless multi-environmental parameter recording transmitter that this utility model patent proposes, its product Ease for use and stability are greatly improved.By wireless data transmission and the function of historgraphic data recording, Ke Yiyou The raising transmitter applications domain variability of effect reduces installs maintenance cost, and measurement and storage for multi-environmental parameter simultaneously provides more Good solution, multi-environmental parameter is measured multiparameter to be measured respectively and is become multi-environmental parameter measurement and roll into one, enters One step reduces the use cost of transmitter, and in the project that some cost control are strict, multi parameter simultaneous measuring can be suitableeer Close designer and carry out type selecting and cost control.Wireless multi-environmental parameter recording transmitter has use value and wide widely Wealthy market prospect.Being adapted for use with building energy conservation, large public building, data collecting system, environmental testing, laboratory is surveyed Examination, agricultural greenhouse environmental monitoring, the application scenario such as health care, is the developing deeply of the Internet of Things application product of a new generation.Meanwhile, Transmitter have installation and measure low cost, without advantages such as artificial secondary record multi-environmental parameter data, can be widely applied to The fields such as building energy conservation, Agricultural Production Monitoring, large public building environmental testing, Smart Home and intelligent building.

Accompanying drawing explanation

Fig. 1 is the example structure figure of the wireless multi-environmental parameter recording transmitter that the utility model proposes.

Fig. 2 is the embodiment of the power control circuit of the wireless multi-environmental parameter recording transmitter that the utility model proposes Circuit diagram.

Fig. 3 is the circuit of the externally fed module of the wireless multi-environmental parameter recording transmitter that the utility model proposes Figure.

Detailed description of the invention

The wireless multi-environmental parameter recording transmitter that this utility model patent proposes, its structure is as it is shown in figure 1, include: n Individual analogue signal measurement sensor, multiparameter analog channel 1 to n, m numeral signal measurement sensor, multiparameter numeral (current n, m maximum is 8 to passage 1 to m, the most at most can be accessed by 8 analog or digital sensors, different according to products configuration, institute Having simulation and digital channel to can be carried out apolegamy, facilitate system test to greatest extent, it is also to consider that port number selects to be 8 to the maximum Determine to actual processor ability and the complexity of transmitter making, the present embodiment is not particularly limited the number of sensor Amount), external data memory, external crystal-controlled oscillation device, button, outside real-time clock, wireless module, SD/TF card module for reading and writing, power supply Control circuit, RS485 modular converter, externally fed module and center processor；The annexation of above-mentioned each device is: each The front end of multiparameter analog channel and multiparameter digital channel connects a corresponding measurement sensor, and all multiparameters are simulated Passage, all multiparameter digital channels, external data memory, external crystal-controlled oscillation device, button, with the outside of battery real-time time Clock, wireless module, SD/TF card module for reading and writing, RS485 modular converter, externally fed module and power control circuit respectively with Center processor connect, power control circuit respectively with all multiparameter analog channels, all multiparameter digital channels, external number According to memorizer, wireless module be connected, externally fed module respectively with button, with battery outside real-time clock, SD/TF card reading Writing module, RS485 modular converter, power control circuit are connected；RS485 modular converter is by RS-485 bus and outside observing and controlling system System is connected；Externally fed module is connected with external power source by power line.

Described center processor mainly includes following hardware module: SCI (serial communication interface), (serial peripheral connects SPI Mouthful), CPU (central processing unit), interface I/O (input/output), ADC (analog-to-digital conversion module), power management, high-frequency clock and Low-speed clock；Wherein, SCI with RS485 modular converter is connected, and SPI is connected with wireless module, and interface I/O joins with all respectively Number digital channel, external data memory, button, the outside real-time clock with battery, SD/TF card module for reading and writing, power supply control Circuit processed connect, ADC is connected with all multiparameter analog channels, and power management is connected with externally fed module, low-speed clock and High-frequency clock connects, and low-speed clock is connected with external crystal-controlled oscillation device.

Below in conjunction with the accompanying drawings and specific embodiment, device each to this utility model and function thereof are described further.

Fig. 2 is the circuit of the power control circuit of the wireless multi-environmental parameter recording transmitter that the utility model proposes Figure, this circuit is made up of transistor T1 and resistance R1, and wherein resistance R1 one end is connected, separately with the I/O module in center processor One end is connected with the base stage of transistor T1, and the emitter stage of transistor T1 exports with the positive pole of externally fed module and is connected, transistor The colelctor electrode of T1 respectively with this transmitter internal wireless module, external data memory, multiparameter digital channel 1 to m, multiparameter The circuit at analog channel 1 to n place is connected；Described power control circuit is for multiparameter analog channel 1 to n, multiparameter number Word passage 1 to m, external data memory, wireless module are powered, and the power source of power control circuit is in externally fed mould Block, power control circuit is connected by holding wire with the interface I/O in center processor and is controlled, when corresponding electricity given by needs When road powers, the interface I/O in center processor makes T1 conducting just can be that related circuit is powered；Use power control circuit Purpose is exactly to reduce transmitter oneself power consumption to greatest extent.The model of the present embodiment transistor T1 uses ON company 8550 or other alternative models, use MOSFET also to can reach similar control effect.

Fig. 3 is the circuit of the externally fed module of the wireless multi-environmental parameter recording transmitter that the utility model proposes Figure, is made up of four diode D1 to D4, three-terminal voltage-stabilizing chip Q1, self-recoverage protective tube F1 and three electric capacity C1 to C3；Four Diode D1 to D4 composition rectification circuit is connected with external dc or alternating current power supply DC-AC, DC+AC, and this rectification circuit is just Outfan connects self-recoverage protective tube F1, and the one end after self-recoverage protective tube F1 other end connection electric capacity C1 with C2 is in parallel forms filter Wave circuit, this end after electric capacity C1 with C2 is in parallel is also connected to three-terminal voltage-stabilizing chip input Vin (3 foot), three-terminal voltage-stabilizing chip Ground end GND (2 foot) connects power supply ground, and three-terminal voltage-stabilizing chip output Vout (1 foot) is power output end VCC, one end of electric capacity C3 Connect power output end VCC；The negative input end of rectification circuit, electric capacity C1, C2 all connect power supply ground with the other end of C3.Externally fed Module is power control circuit, button, outside real-time clock, SD/TF card module for reading and writing, RS485 modular converter and center Power management in reason device is powered.The operation principle of this circuit is: external power source AC or DC 6-24V (i.e. DC+AC and DC-AC) four diode D1 to D4 are connected, by rectification, the sense of current is unified, carry out through self-recoverage protective tube F1 afterwards Overcurrent protection, other circuit damage in preventing current over pulse fault from causing this transmitter, carry out electricity through electric capacity C1 and C2 Source filters, can be by plant-grid connection three-terminal voltage-stabilizing chip Q1, and after Q1 voltage stabilizing, the 1 pin VCC voltage-to-ground of Q1 keeps constant, Secondary filtering is carried out by electric capacity C3 more eventually during output；Do so can prevent voltage jump from making other circuit in this transmitter Become impact.The model that in the present embodiment, D1 to D4 selects Toshiba to produce is 1N4007 diode, and Q1 uses AMS company to produce AMS1117 three-terminal voltage-stabilizing chip, F1 select Tai Ke company produce 1A resettable fuse, C1 to C3 uses Japanese red gem Electrochemical capacitor, its parameter is 100uF/50V.

Outside real-time clock of the present utility model provides actual time for this transmitter, and still ensures that under power-down conditions The normal timing of clock, tackles it after using certain time and carries out clock alignment, in terms of the clock reference unification ensureing this transmitter Time；The outside real-time clock of the present embodiment uses the typical circuit of standard DS1302 chip, has three pins to connect in this chip The interface I/O of center processor, can complete reading and the setting of real-time time by interface I/O, uses CR2032 battery conduct Long-lasting power source, owing to this self-discharge of battery is the lowest, therefore a batteries used for up to 3 years.

Multiparameter analog channel 1 to n front end of the present utility model connects measurement sensor (this sensor of corresponding number Concrete function need to be according to product demand depending on), can be used for by all analog quantitys (such as platinum resistance temperature sensor, wind speed pass The analog quantity parameters such as sensor, barometric pressure sensor, relative pressure sensor, intensity of illumination sensor) incoming center processor； When analog output is 0-3V (analog quantity more than 3V can carry out voltage transformation to be suitable for all types of sensors), center Reason device can precisely detect and collect, and by the ADC within center processor, analog quantity is converted to digital quantity, Finally can store in external storage and SD/TF card module for reading and writing or be transferred in outside RS-485 bus；Described multiparameter Analog channel 1 to n is realized by electric resistance partial pressure, uses two standard thousand-island forest park resistance to carry out certain proportion dividing potential drop, permissible Analog output voltage is reduced in proportion, thus realizes being converted to digital quantity less than the analog quantity of 3V benchmark；Generally should Bigger valued resistor is selected to carry out dividing potential drop, in order to make the electric current in measurement loop reduce, thus reduce the output of analog channel 1 to n Electric current is born, and do so decreases the overall caloric value of this transmitter, reduces work and the standby temperature of this transmitter, makes This transmitter extends service life.

Multiparameter digital channel 1 to m of the present utility model is passed by the measurement numeral that will be located in its front end corresponding number Sensor is (depending on the concrete function of this sensor need to be according to product demand；At present digital sensor gets more and more the most on the market, performance and Manufacture level gradually promotes, and can replace analog sensor by selecting digital sensor under appropriate circumstances) access center processing Interface I/O in device realizes；Described multiparameter digital channel can connect the most common digital interface protocol, the longest There are IIC, SPI, monobus, UART, Parallel Digital etc., according to actual digital sensor interface, select corresponding digital interface, Carry out data transmission according to general digital communication stipulations, digital quantity is transferred to center processor, finally can store outside In bin and SD/TF card module for reading and writing, or it is transferred in outside RS-485 bus, it is achieved the reading of data, storage and biography mutually.

SD/TF card module for reading and writing of the present utility model, for reading and writing the data of multi-environmental parameter record, can be with write-once The digital quantity value of multi-environmental parameter, SD/TF module for reading and writing can write data into SD card or TF card is internal, as used standard FAT32 Final data can be saved as TXT or csv file form by file system, facilitate user by the data within SD card or TF card Import on acquisition terminal；The SD/TF card module for reading and writing of the present embodiment, uses some resistance and electric capacity to build, this circuit Belong to open international standard circuit, no longer describe in detail；A lot of problem is had owing to low speed is stuck in future trend and read or write speed, therefore SD card or TF card mostly use 2.0 version cards at a high speed；SD card and TF card are both needed to carry out FAT32 format manipulation before use.

Wireless module of the present utility model, for wireless receiving and dispatching data, can by each passage in external record class instrument (i.e. Above-mentioned multiparameter analog channel 1 to n and multiparameter digital channel 1 to m) data transfer is on another acquisition terminal, real Existing data remote or the purpose of monitored off-line；Wireless module be connected with the SPI of center processor carry out data exchange realize control, The power supply of wireless module is provided by externally fed module；The wireless data that will send is by the SPI module in center processor Transmission is transmitted to wireless module, and when sending this wireless data, variable interval sends several secondary data and can reach anti-wireless The purpose of signal disturbing, sends packet the most brief effectively, and receiving signal need to carry out data check rear it is believed that data have Effect；Owing to wireless module operationally power consumption is big, so minimizing communication time of trying one's best can effectively reduce wireless module and bring Make the problem that whole transmitter power consumption increases, the communication interface of wireless module uses SPI digital transmission protocol, logical in order to improve News speed (reducing the working time of wireless module) just uses the SPI module in center processor to complete communication.The present embodiment Wherein wireless module uses 433MHZ frequency range wireless communication module, the A7108 of its chip model Shi Sheng section electronics, belongs to forth generation high Usefulness chip.

External data memory of the present utility model, for receiving the digital signal that center processor sends, external data Memorizer is connected with the interface I/O of center processor by holding wire, can store this transmitter configurations data and associated user's letter Breath, transmitter configurations data when each transmitter works on power, in described center processor meeting reading external data memorizer And relevant user information；The power supply of external data memory is provided by power control circuit；The realization electricity of external data memory Route nonvolatile memory EEPROM, multiple resistance composition, wherein the holding wire of EEPROM is pulled upward to power supply by resistance respectively Voltage, synchronous signal line is directly connected to the interface I/O of center processor.After measuring corresponding sensor parameters, number will be measured Realize automatically recording measurement data according to being stored in EEPROM by holding wire；EEPROM can carry out a small amount of byte manipulation simultaneously Read-write；The contents such as some boot-strap informations are also stored in EEPROM by the present embodiment, during start, all carry out the reading of necessity every time Extract operation, has been used for opening initialization.The model of the EEPROM of the present embodiment is AT24C256 or the employing of Wei Xin company FLASH or other storage class chips substitute EEPROM；As data storage is built in center processor, it is also possible to omit This part.

Button of the present utility model is made up of touch switch and resistance, wherein one end of touch switch and externally fed module Positive source connect, the other end connects resistance one end, and resistance other end ground connection, during the common port of touch switch and resistance connects The interface I/O of heart processor；Described button inputs for man-machine interaction, can change wireless multi-environmental parameter recording transmitter State and mode of operation, button is connected with the interface I/O within center processor by holding wire, center processor timing scan Level changes to reach the purpose whether perception button is pressed；The power supply of button is provided by externally fed module；The present embodiment Touch switch and resistance are the universal products.

RS485 modular converter of the present utility model is used for switching levels, it is achieved external data exchanges；RS485 modular converter Two holding wires, the RS485 modular converter other end and the SCI phase within center processor need to be connected with outside RS-485 bus Connecting, the power supply of RS485 modular converter is directly provided by externally fed module；The RS485 modular converter of the present embodiment is RS- 485 conversion chips, are market general-purpose chips, enumerate model such as MAX3485, MAX485, AT485, can realize its level conversion merit Can.

External crystal-controlled oscillation device of the present utility model is directly connected with the low-speed clock in center processor by holding wire, is used for Centered by processor provide clock reference, the 8M that model is Seiko company of the external crystal-controlled oscillation device of the present embodiment.

Center processor of the present utility model is responsible for the operation of this transmitter, and center processor includes SCI, SPI, CPU, connects Mouth I/O, ADC, power management, high-frequency clock and the multiple module of low-speed clock, each module corresponding module outside with center processor Form various functional unit；Wherein, externally fed module has been connected whole center with the power management in center processor Power within processor controls, to reach the purpose of center processor lowest energy consumption；High-frequency clock and low-speed clock exist Being connected inside center processor, the high-frequency clock within center processor is by low-speed clock frequency multiplication, center processor Use inner control logic switching high-frequency clock and low-speed clock, high-frequency clock can process data and with outer computer communication Deng higher operand time use, low-speed clock and external crystal-controlled oscillation device cooperating complete the clocked flip event merit of this transmitter Can, in most of the cases use low-speed clock, make the lower power consumption of this transmitter, so solve processing speed and power consumption it Between contradiction, reduce unit power consumption and can effectively reduce demand when transmitter is powered, power supply chosen, thus reducing into This transmitter reliability service is ensured while Ben；ADC completes all of analog quantity and turns digital quantity work；Interface I/O is with outer The all digital interfaces in boundary are connected and complete digital communication and control；SCI module has been connected this transmitter with RS485 modular converter Serial communication；SPI module has then individually been connected wireless digital communication function with wireless module；The CPU of center processor is complete The digital operation of cost transmitter realizes all logics and function computing.The model of the center processor of the present embodiment is TI company MSP430F425.When the normal electrifying startup of transmitter, center processor, as transmitter core, starts whole transmitter work Make flow process, the EEPROM in center processor first reading external data memorizer, the initialization information of necessity can be obtained, carry out After initialization, all multiparameter digital channel 1 to m, multiparameter analog channel 1 to n can regularly carry out normal data acquisition With the task sex work such as process, owing to the various ambient parameters in actual environment are all in change procedure, for measuring it is Disadvantageous, center processor is only filtered by a period of time average number, could will measure parameter essence from the data of change Really extracting, ineligible data are automatically rejected by center processor according to actual measured results, and by valid data Carry out showing, preserve, be wirelessly transferred, wired RS-485 bus transfer.

Wireless multi-environmental parameter recording transmitter workflow is: passed through by the multiparameter each passage of analog channel 1 to n ADC simulation amount in center processor is converted to digital quantity, and the multiparameter each passage of digital channel 1 to m is passed through center I/O interface in processor carries out digital communication, and final each passage digital quantity is stored in center processor；Center processor Multi-channel digital amount data are converted to Standard Data Format and are stored in SD/TF card；External data memory storage transmitter These configuration data are read in center processor when starting transmitter each time, for corresponding transmitter by configuration data simultaneously Initialize；Transmitter by the external communication data in RS485 modular converter real-time reception RS-485 bus to center processor, Center processor selects to send or do not send feedback data to RS-485 bus according to the corresponding command and verification data result, completes Question and answer mode communication；On the other hand wireless module can be by multi-channel data timing packing, wireless transmission data to detection and control terminal (far-end Wireless data recipient)；Transmitter has real-time clock, reads real-time time during start every time, and transmitter can regularly read Real-time clock ensures the reliable of transmitter time；The level that center processor real time scan button causes has changed man-machine friendship Mutually；Externally fed module completes the power supply of most of module in above process, and another part circuit is carried by power control circuit Confession, the electric energy of power control circuit is directed to externally fed module, and the electric energy break-make of disparate modules controls by center The I/O interface of reason device completes with power control circuit, and do so can reduce electric energy loss to the full extent makes whole transmitter low Power consumption is run；Low power operation can well reduce the self-heating of transmitter simultaneously, and minimum degree affects actual environment and surveys Value.

All kinds of real-time measurement values of the recordable multi-environmental parameter of this transmitter and relevant parameter, specific environment measure parameter by Products configuration determines, can be linked into transmitter from a passage to multiple passages, each passage records data respectively, so Do the problem that acquisition terminal fault causes valid data in transmitter effectively not received by main control node that can efficiently solve, also Transmitter well can be integrated with record class instrument, can review in complete documentation historical data later stage.On the other hand, by nothing The wireless data transmission function that wire module provides, can use wireless transmission method when wired path of transmitter breaks down Transfer data on main frame, improve product reliability and backup capabilities；In some occasions, can will be wirelessly transferred as master Want data transfer mode to save the work into each node connecting wiring, i.e. improve cloth point efficiency and reduce again maintenance cost；Its Secondary, multi-environmental parameter is measured can effectively reduce cost when multiparameter gathers respectively, it is not necessary to each ambient parameter is joined Put a single transmitter.

Above-mentioned specific embodiment of the utility model is intended only as illustrating the technical solution of the utility model, respectively The model realizing circuit and each main devices of circuit all can not be in order to limit protection domain of the present utility model；Such as, will ADC in center processor changes the individual chips being located at outside center processor into；Center processor is changed and makees functional similarity or height The center processor of level；Data storage uses FLASH or other model；The T1 of power control circuit uses the core of other models Sheet；Wireless module uses the communication module of different manufacturers or frequency range instead；Wireless module uses wireless module instead with center processor together The senior integral chip of encapsulation；Other media are used to carry out data storage；Extended formatting file is used to carry out data storage；Such as The equivalent of the technical scheme of one class broadly falls into the protection domain of this utility model patent.

Claims (9)

1. a wireless multi-environmental parameter recording transmitter, it is characterised in that this transmitter includes: n analogue signal is measured By sensor, n multiparameter analog channel, m numeral signal measurement sensor, m multiparameter digital channel, external data Memorizer, external crystal-controlled oscillation device, button, outside real-time clock, wireless module, SD/TF card module for reading and writing, power control circuit, RS485 modular converter, externally fed module and center processor；The annexation of above-mentioned each device is: at each multiparameter mould Intend the front end of passage and multiparameter digital channel and respectively connect a corresponding measurement sensor, all multiparameter analog channels, All multiparameter digital channels, external data memory, external crystal-controlled oscillation device, button, outside real-time clock, wireless module, SD/TF Card module for reading and writing, RS485 modular converter, externally fed module and power control circuit are connected with center processor respectively, electricity Source control circuit respectively with all multiparameter analog channels, all multiparameter digital channels, external data memory, wireless module Being connected, externally fed module is changed with button, the outside real-time clock with battery, SD/TF card module for reading and writing, RS485 respectively Module, power control circuit are connected；RS485 modular converter is connected with outside TT&C system by RS-485 bus；Externally fed Module is connected with external power source by power line.

2. transmitter as claimed in claim 1, it is characterised in that described center processor mainly includes following hardware module: SCI, SPI, CPU, interface I/O, ADC, power management, high-frequency clock and low-speed clock；Wherein, SCI Yu RS485 modular converter is even Connecing, SPI is connected with wireless module, interface I/O respectively with all multiparameter digital channels, external data memory, button, outside Real-time clock, SD/TF card module for reading and writing, power control circuit connect, and ADC is connected with all multiparameter analog channels, power supply pipe Reason is connected with externally fed module, and low-speed clock is connected with high-frequency clock, and low-speed clock is connected with external crystal-controlled oscillation device.

3. transmitter as claimed in claim 2, it is characterised in that described power control circuit is made up of transistor and resistance, Wherein one end of resistance is connected with the I/O module in center processor, and the other end is connected with the base stage of transistor, sending out of transistor The positive pole of emitter-base bandgap grading and externally fed module exports and is connected, the colelctor electrode of transistor respectively with this transmitter internal wireless module, outward Portion's data storage, all multiparameter digital channels, the circuit at all multiparameter analog channel places are connected.

4. transmitter as claimed in claim 1, it is characterised in that the circuit of described externally fed module by four diodes, Three-terminal voltage-stabilizing chip, self-recoverage protective tube and three electric capacity compositions；The rectification circuit of four diode compositions and external power source Being connected, the positive output end of this rectification circuit connects self-recoverage protective tube, and the other end of self-recoverage protective tube connects through the first electric capacity (C1) one end after in parallel with the second electric capacity (C2) forms filter circuit, after the first electric capacity (C1) is in parallel with the second electric capacity (C2) This end is also connected to the input of three-terminal voltage-stabilizing chip, termination power ground, three-terminal voltage-stabilizing chip ground, the output of three-terminal voltage-stabilizing chip End is power output end, and one end of the 3rd electric capacity (C3) connects power output end；The negative input end of rectification circuit, three electric capacity The other end all connects power supply ground.

5. transmitter as claimed in claim 1, it is characterised in that with battery inside described outside real-time clock.

6. transmitter as claimed in claim 2, it is characterised in that described button is made up of touch switch and resistance, its midpoint The one end touching switch is connected with the positive source of externally fed module, and the other end connects one end of resistance, the other end ground connection of resistance, The common port of touch switch and resistance is by connecting the interface I/O of center processor.

7. transmitter as claimed in claim 2, it is characterised in that when the high-frequency clock within described center processor is by low speed Clock frequency multiplication obtains.

8. transmitter as claimed in claim 1, it is characterised in that the communication interface of described wireless module uses SPI numeral Host-host protocol, wireless module uses 433MHZ frequency range wireless communication module.

9. transmitter as claimed in claim 1, it is characterised in that described SD/TF card module for reading and writing uses standard FAT32 literary composition Part system, some resistance and electric capacity the preferred circuit built.