CN204332051U - based on the acquisition terminal of WIA-PA wireless communication module - Google Patents
based on the acquisition terminal of WIA-PA wireless communication module Download PDFInfo
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- CN204332051U CN204332051U CN201420841789.9U CN201420841789U CN204332051U CN 204332051 U CN204332051 U CN 204332051U CN 201420841789 U CN201420841789 U CN 201420841789U CN 204332051 U CN204332051 U CN 204332051U
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Abstract
The utility model relates to the industrial wireless sensing network technology in the communications field, specifically a kind of acquisition terminal based on WIA-PA wireless communication module, WIA-PA wireless communication module one end is connected with MCU module by serial ports, be connected with MCU module two-way communication, the other end is connected to MCU module by GPIO, and WIA-PA wireless communication module also connects power management module by GPIO; Sensor assembly connects MCU module, and MCU module connects display module by GPIO interface, and power management module connects WIA-PA wireless communication module, MCU module, sensor assembly and display module.The utility model carries out unified management by WIA-PA wireless communication module to the task of acquisition terminal, can reduce operating power consumption and the standby energy consumption of acquisition terminal, improves the discharge capacity of battery, extends the battery of acquisition terminal; Dump energy and remaining power service time can be predicted accurately and reliably.
Description
Technical field
The utility model relates to the industrial wireless sensing network technology in the communications field, specifically a kind of acquisition terminal based on WIA-PA wireless communication module.
Background technology
The developing rapidly of technology of Internet of things in recent years, the acquisition terminal for technology of Internet of things arises at the historic moment, and these acquisition terminals mainly improve the ubiquitous perception of people, for automatically to control or manual intervention controls to provide identification data.Can say that the acquisition terminal in Internet of Things is fusion automatic technology, the communication technology, infotech carried out.
The wireless technology that some wireless acquisition terminals adopt at present has diversity, mainly adopts mobile communication technology, WLAN, ZIGBEE, WIA-PA, WirelessHART and uses other wireless communication technologys of ISM band.No matter adopt any wireless technology, the greatest problem that acquisition terminal faces is all powerup issue.
The main hardware structure of acquisition terminal adopts battery, sensor, display module, analog input card, wireless communication module composition.Each hardware module is not regarded as an entirety and is carried out unified management by the acquisition terminal of some producers; Although some producers have carried out unified management but the wireless module adopted is radio transmission-receiving function or only has simple Network Management Function, there is no good network management to avoid interference the data re-transmission brought and then the energy consumption increase caused; Although some producers have carried out unified management, the wireless module adopted also has good Network Management Function to avoid interference raising data success ratio, but analog input card and wireless module are a parallel work relationship all the time, software does not have good administrative mechanism cause the increase of energy consumption.
Except energy consumption cannot effectively manage, acquisition terminal cannot provide reliable and effective dump energy service time to user.Only adopt the life forecast of prediction mode for battery of cell voltage, because battery behavior is different, predict very inaccurate.Have the serviceable life predicted and also have for a long time, acquisition terminal but cannot normally work; Have prediction not have serviceable life, battery still can use for a long time.The appearance of this situation brings the inconvenience in use, maintenance to user.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of acquisition terminal, can carry out effective management to reach lower power consumption and can predict remaining life accurately and reliably to power consumption.
The technical scheme that the utility model is adopted for achieving the above object is:
A kind of acquisition terminal based on WIA-PA wireless network, WIA-PA wireless communication module one end is connected with MCU module by serial ports, be connected with MCU module two-way communication, the other end is connected to MCU module by GPIO, transmit control signal, and receive the control signal that MCU module sends, carry out double-direction control with MCU module; WIA-PA wireless communication module also connects power management module by GPIO;
Sensor assembly connects MCU module, the simulating signal of collection is sent to MCU module and carries out A/D conversion;
MCU module connects display module by GPIO interface, sends control signals to the instrument parameter information of display module display physical quantity information, warning message and acquisition terminal;
Power management module connects WIA-PA wireless communication module, MCU module, sensor assembly and display module, carries out power supply control to module.
Described WIA-PA wireless communication module comprises WIA-PA chip, storage unit, transceiver unit, power amplification unit and filter unit; WIA-PA chip is connected with storage unit, transceiver unit; Transceiver unit and power amplification unit, filter unit are linked in sequence.
Described WIA-PA chip adopts cpu chip, and for realizing WIA-PA wireless communication protocol stack, this chip comprises serial ports, SPI interface and I/O control interface;
Described transceiver unit adopts modem chip, has SPI interface and RF radio frequency interface;
Described power amplification unit adopts power amplifier chip, and its RF rf input interface is connected with the RF radio frequency interface of transceiver unit, and its RF radio frequency output interface is connected with the RF rf input interface of filter unit;
Described filter unit adopts bandpass filter, and its RF radio frequency output port is used for being connected with antenna;
Described filter unit adopts bandpass filter, and its RF radio frequency output port is used for being connected with TDD power amplification unit.
Described power management module comprises display module power-supplying circuit, sensor assembly power-supplying circuit and MCU module power-supplying circuit.
The utility model has following beneficial effect and advantage:
1. the utility model carries out unified management by WIA-PA wireless communication module to the task of acquisition terminal, can reduce operating power consumption and the standby energy consumption of acquisition terminal, improves the discharge capacity of battery, extends the battery of acquisition terminal;
2. the utility model is monitored the task of acquisition terminal by WIA-PA wireless module, can predict dump energy and remaining power service time accurately and reliably;
3. the utility model is by extending the serviceable life of battery, and then can reduce the volume of acquisition terminal.
Accompanying drawing explanation
Fig. 1 is acquisition terminal hardware block diagram of the present utility model;
Fig. 2 is acquisition terminal method for managing power supply process flow diagram of the present utility model;
Fig. 3 is acquisition terminal electric quantity accumulation process flow diagram of the present utility model;
Fig. 4 is acquisition terminal remaining power life prediction process flow diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 acquisition terminal hardware block diagram of the present utility model.Acquisition terminal is primarily of WIA-PA wireless communication module, MCU module, sensor assembly, display module, power management module composition.WIA-PA wireless communication module is connected with GPIO by serial port with MCU module, and serial port is used for mutual real time data and command message, and the work that GPIO is used for controlling MCU module wakes up and the execution of task.MCU module is connected with differential signal interface by power supply interface with sensor assembly, and the signal input MCU module that sensor assembly is changed out carries out nursing one's health and AD conversion.MCU module is connected by GPIO with display module, and the liquid-crystal controller of MCU module inside controls the complete physical quantity data of display module display conversion.Power management module is connected responsible power supply by power interface with WIA-PA wireless communication module, MCU module, sensor assembly, display module.
WIA-PA wireless communication module is connected with the serial ports of MCU module by serial ports, TXD, RXD, GND tri-connecting lines are had to connect, level pattern is Transistor-Transistor Logic level, major function realizes WIA-PA wireless communication module and sends command message to MCU module, receives the data message that MCU module sends to WIA-PA wireless communication module.WIA-PA wireless communication module triggers MCU module by GPIO3 high level and starts AD collection; MCU module gathers complete by GPIO4 high level notice WIA-PA wireless communication module AD and starts that MCU module serial ports enters sending mode, WIA-PA wireless communication module enters receiving mode; WIA-PA wireless communication module triggers by GPIO5 high level that MCU module enters dormant state, wakes up from dormant state, serial port data interactive.WIA-PA wireless communication module connects the MCU module power-supplying circuit in power management module by GPIO1; WIA-PA wireless communication module connects the sensor assembly power-supplying circuit in power management module by GPIO2; WIA-PA wireless communication module connects the display module power-supplying circuit in power management module by GPIO6; WIA-PA wireless communication module connects power management module by power supply interface.
MCU module is connected to WIA-PA wireless communication module by serial ports, MCU module is connected to sensor assembly by differential signal line, the signal of differential signal line transmission can be electric current also can be voltage, when differential signal line is transmitted as electric current, electric current is converted to voltage by I-V change-over circuit by MCU module inside, then carries out AD conversion by AD sample circuit; When differential signal line is transmitted as voltage, AD conversion is carried out by AD sample circuit after being amplified by operational amplifier in MCU module inside.MCU module inside has temperature sampling function, and according to the digital quantity of temperature range, AD conversion, the correction card of acquisition terminal, MCU module calculates the physical quantity size of current collection.MCU module connects display module by GPIO, controls the instrument parameter information etc. of display module display physical quantity and relevant warning information, acquisition terminal.MCU module connects power management module by power supply interface.
Power management module is connected by GPIO1, GPIO2, GPIO6 and WIA-PA wireless communication module, pass through signal wiring, accept the control realization of WIA-PA wireless communication module to the power supply control of MCU module, sensor assembly, display module, power management module to be connected with WIA-PA wireless communication module, MCU module, sensor assembly, display module by power interface and to power.
Fig. 2 is acquisition terminal power management process flow diagram of the present utility model.Power management process flow diagram mainly for the acquisition tasks of acquisition terminal, describe acquisition tasks concrete implementation procedure.After acquisition terminal powers on, WIA-PA wireless communication module power-up routine starts, and WIA-PA wireless communication module program can start the monitoring and prediction program of power supply while starting.According to set acquisition interval T, WIA-PA wireless communication module judges that drainage pattern belongs to be interrupted and gathers or intensive collection, acquisition interval T is less than T
thacquisition interval threshold value, then think that acquisition terminal enters intensive drainage pattern.T
thsetting and definition mainly from the angle of saving acquisition terminal MCU module power consumption.WIA-PA wireless communication module acquisition tasks will start timer after starting, and namely this timer just once gathers at interval of time T acquisition terminal for starting timing continuously.After timer timing arrives, WIA-PA wireless communication module judges whether this time gather is first collection that power on.If gather for the first time, the MCU module power-supplying circuit that WIA-PA wireless communication module uses GPIO1 to control power management module is powered to MCU module, and the sensor assembly power-supplying circuit simultaneously using GPIO2 to control power management module is powered to sensor assembly; If not first collection, WIA-PA wireless communication module uses GPIO5 to control MCU module by the mode of interrupting and wakes up from park mode, and the sensor assembly power-supplying circuit simultaneously using GPIO2 to control power management module is powered to sensor assembly.After having powered on, WIA-PA wireless communication module uses GPIO3 to use the mode of interrupting to trigger MCU module startup acquisition tasks.After MCU module gathers, by GPIO4 with the mode trigger notice WIA-PA wireless communication module interrupted; WIA-PA wireless communication module uses GPIO2 to control the sensor assembly power-supplying circuit closure sensor module for power supply of power management module.The digital quantity that AD collection comes is carried out computation of table lookup and converts physical quantity to by MCU module, and the display module power-supplying circuit that WIA-PA wireless communication module uses GPIO6 to control power management module is powered to display module.MCU module uses GPIO control display module to show the physical quantity of current collection.The physical quantity converted is sent to WIA-PA wireless communication module by serial ports by MCU module, and WIA-PA wireless communication module uses GPIO5 to control MCU module by the mode of down trigger and enters park mode.MCU sends data are wirelessly forwarded to WIA-PA wireless network by WIA-PA wireless communication module, and this time acquisition tasks terminates.By the time gather timing arrival and then repeat above process.
If acquisition interval T is greater than T
thacquisition interval threshold value, then think that acquisition terminal enters interruption drainage pattern.After timer timing arrives, the MCU module power-supplying circuit that WIA-PA wireless communication module uses GPIO1 to control power management module is powered to MCU module, and the sensor assembly power-supplying circuit simultaneously using GPIO2 to control power management module is powered to sensor assembly.After having powered on, WIA-PA wireless communication module uses GPIO3 to use the mode of interrupting to trigger MCU module startup acquisition tasks.After MCU module gathers, by GPIO4 with the mode trigger notice WIA-PA wireless communication module interrupted; WIA-PA wireless communication module uses GPIO2 to control the sensor assembly power-supplying circuit closure sensor module for power supply of power management module.The digital quantity that AD collection comes is carried out computation of table lookup and converts physical quantity to by MCU module, and the display module power-supplying circuit that WIA-PA wireless communication module uses GPIO6 to control power management module is powered to display module.MCU module uses GPIO control display module to show the physical quantity of current collection.The physical quantity converted is sent to WIA-PA wireless communication module by serial ports by MCU module, and WIA-PA wireless communication module uses GPIO1 to control the power supply of power management module closedown MCU module.MCU sends data are wirelessly forwarded to WIA-PA wireless network by WIA-PA wireless communication module, and this time acquisition tasks terminates.By the time gather timing arrival and then repeat above process.
Fig. 3 is acquisition terminal electric quantity accumulation process flow diagram of the present utility model, is acquisition terminal power supply monitoring flow process.WIA-PA wireless communication module program starts the monitoring and prediction containing power supply, starts power supply monitoring task when WIA-PA wireless communication module program starts.WIA-PA wireless communication module starts timing according to set power supply monitoring interval T.Timer timing does not arrive then WIA-PA wireless communication module and performs acquisition tasks flow process and Fig. 2 acquisition terminal power management of the present utility model process flow diagram.When timing arrives, WIA-PA wireless communication module gathers the working temperature of current acquisition terminal.WIA-PA wireless communication module, according to Current Temperatures and acquisition terminal average consumed cur-rent table lookup table, finds out temperature range, adds up to the electricity consumed according to completing of task.Cumulative formula is
or Q=Σ It, T
afor acquisition interval, T
mfor power supply monitoring interval, I
ifor the average current of task, t
ifor the duration of task.If T
mt
aintegral multiple, then totalization formula
if non-integral multiple, cumulative the drawing after adopting each task average current to be multiplied by the task duration is that after Q=Σ It. has added up, this time monitoring task has terminated, and waits for that power supply monitoring timing arrival then repeats above process.
Table 1
Table 1 is acquisition terminal average consumed cur-rent table of the present utility model.Because the average consumed cur-rent under acquisition terminal same temperature different operating task and the same task of different temperatures differs greatly, directly have influence on the monitoring calculation of consumes power.Task is divided into and can tests average consumed cur-rent by the real work situation according to acquisition terminal, working time can be counted, and the summation that the current sinking of all tasks is together in series should be current sinking in acquisition terminal whole service process, the summation that the working time of all tasks is together in series should be the acquisition terminal whole service time.It is more than the principle that task divides.The making rule of table 1 acquisition terminal average consumed cur-rent table is made according to above principle, first we divide task according to the workflow of acquisition terminal, the serial ports transmission data such as setting WIA-PA wireless communication module are task 1, it is task 2 that the serial ports of setting WIA-PA wireless communication module receives data, it is task 3 that the serial ports of setting MCU module sends data, it is task 4 that the serial ports of setting MCU module receives data, setting sensor module acquires is task 5, setting MCU module collecting temperature is task 6, it is task 7 etc. that setting MCU module enters park mode, require to cover all tasks.Secondly we carry out test statistics to the electric current that each task consumes with the time continued according to dividing of task, because the working current variation with temperature of semiconductor devices has a greater change, we will note the division of temperature when making this table, divide from low to high.Actual consumption electric current variation with temperature curve according to acquisition terminal comes design temperature interval, can be equally spaced can be also changing distance, as long as the medium temperature point in temperature interval ranges can represent whole temperature range.Temperature range Temp1-Temp2 task 1 duration is t
1, average consumed cur-rent is I
11; The task n duration is t
n, average consumed cur-rent is I
1n.Temperature range Tempn-Tempn+1 task 1 duration is t
1, average consumed cur-rent is I
n1; The task n duration is t
n, average consumed cur-rent is I
nn.Finally this form is stored in WIA-PA wireless communication module, so that acquisition terminal electric quantity accumulation flow process uses.
Fig. 4 is acquisition terminal remaining power life prediction process flow diagram of the present utility model.The mode that battery life predicting of the present utility model adopts power quantity predicting and voltage prediction to combine is carried out, because acquisition terminal adopts capacity type battery, the change of phase cell voltage is very little before use, cannot go out remaining battery service time accurately by voltage prediction.But later stage cell voltage pressure drop is larger can predict remaining battery life more reliably.So early stage is that we adopt the mode of power quantity predicting when cell voltage is greater than certain threshold value, later stage cell voltage is less than the mode that threshold value then adopts voltage prediction.This process flow operation is after Fig. 3 acquisition terminal electric quantity accumulation flow process.MCU gathers cell voltage, judges whether to be greater than threshold value V
thif cell voltage is greater than threshold value V
ththen illustrate that the battery of acquisition terminal is used in preliminary stage.WIA-PA wireless communication module carries out tabling look-up according to the working environment of current acquisition terminal and draws the available power of battery.According to Fig. 3 acquisition terminal electric quantity accumulation process flow diagram, WIA-PA wireless communication module obtains the total electricity consumed, thus obtains remaining total electricity Q
r=Q
t-Q
u, Q
rfor dump energy, Q
tfor the total electricity of battery, Q
ufor acquisition terminal consumption makes power consumption.According to the total electricity of the consumption of acquisition terminal and the average current I calculating acquisition terminal working time.Remaining battery service time is T
r=Q
r/ I, T
rfor remaining service time, Q
rfor remaining battery power, I are average running current.WIA-PA wireless network is the need of remaining battery service time, if needed, remaining power is sent to WIA-PA wireless network service time by WIA-PA wireless communication module, terminate battery prediction task, if do not needed, directly enter and terminate battery prediction flow of task.As cell voltage V
thwhen being less than threshold value, acquisition terminal is tabled look-up battery table, and the residue obtaining cell voltage according to corresponding cell voltage benefits from the life-span.Simultaneously WIA-PA wireless communication module produces low pressure warning prompting, is presented on display module, the remaining battery of display module display simultaneously service time.Low-voltage alarm prompt and residue are sent to WIA-PA wireless network service time by WIA-PA wireless communication module.Terminate battery prediction flow of task
The calculating of the operable total electricity of battery: first calculate the battery capacity under the different electric current of same temperature, we use the task division in table 1 acquisition terminal average consumed cur-rent table, the battery capacity that different tasks, different operating time, different working currents are corresponding different.So the consumes power in the same temperature next task cycle is
q
tfor acquisition terminal consumes power, Q in the same temperature next task cycle
1~ Q
nfor total electricity, the t of battery corresponding when different current discharge
1~ t
nfor the duration of the different electric current of acquisition terminal.Secondly we follow the actual working environment according to acquisition terminal, select one through the close environment of laboratory test, the judgement of this environment and select by following rule: first temperature is divided into n part, then adds up each temperature range acquisition terminal time accounting of working time in the battery life cycle of whole acquisition terminal respectively.Total electricity that battery can discharge
q
tfor total electricity, the Q of battery
t1~ Q
tnfor acquisition terminal consumes power, t in the different temperatures next task cycle
1~ t
nfor the time that each temperature range continues.Total electricity that battery in this working environment can discharge can be calculated by the calculating of above two steps.Adopt close environmental simulation during battery operation one-period, the later cycle is revised according to the statistics of period 1, and the total electricity of the battery provided like this is very reliable and accurate.
Table 2
Table 2 is acquisition terminal remaining battery life table of the present utility model.This form is mainly used in acquisition terminal battery life predicting, uses lower than when voltage threshold at cell voltage.The minimum voltage that cell voltage can run from acquisition terminal is divided into n part to voltage threshold by us, and for different temperatures scope, different voltage carries out the remaining life that test statistics goes out acquisition terminal.In temperature range Temp1-Temp2, cell voltage is V
1, the remaining power life-span is t
11, in temperature range Temp1-Temp2, cell voltage is V
n, the remaining power life-span is t
1n.In temperature range Tempn-Tempn+1, cell voltage is V
1, the remaining power life-span is t
n1, in temperature range Tempn-Tempn+1, cell voltage is V
n, the remaining power life-span is t
nn.This list data is that fixed value is stored in WIA-PA wireless communication module.
Claims (4)
1. the acquisition terminal based on WIA-PA wireless network, it is characterized in that: WIA-PA wireless communication module one end is connected with MCU module by serial ports, be connected with MCU module two-way communication, the other end is connected to MCU module by GPIO, transmit control signal, and receive the control signal that MCU module sends, carry out double-direction control with MCU module; WIA-PA wireless communication module also connects power management module by GPIO;
Sensor assembly connects MCU module, the simulating signal of collection is sent to MCU module and carries out A/D conversion;
MCU module connects display module by GPIO interface, sends control signals to the instrument parameter information of display module display physical quantity information, warning message and acquisition terminal;
Power management module connects WIA-PA wireless communication module, MCU module, sensor assembly and display module, carries out power supply control to module.
2. the acquisition terminal based on WIA-PA radio communication according to claim 1, is characterized in that: described WIA-PA wireless communication module comprises WIA-PA chip, storage unit, transceiver unit, power amplification unit and filter unit; WIA-PA chip is connected with storage unit, transceiver unit; Transceiver unit and power amplification unit, filter unit are linked in sequence.
3. the acquisition terminal based on WIA-PA radio communication according to claim 2, is characterized in that: described WIA-PA chip adopts cpu chip, and for realizing WIA-PA wireless communication protocol stack, this chip comprises serial ports, SPI interface and I/O control interface;
Described transceiver unit adopts modem chip, has SPI interface and RF radio frequency interface;
Described power amplification unit adopts power amplifier chip, and its RF rf input interface is connected with the RF radio frequency interface of transceiver unit, and its RF radio frequency output interface is connected with the RF rf input interface of filter unit;
Described filter unit adopts bandpass filter, and its RF radio frequency output port is used for being connected with antenna;
Described filter unit adopts bandpass filter, and its RF radio frequency output port is used for being connected with TDD power amplification unit.
4. the acquisition terminal based on WIA-PA radio communication according to claim 1, is characterized in that: described power management module comprises display module power-supplying circuit, sensor assembly power-supplying circuit and MCU module power-supplying circuit.
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| CN201420841789.9U CN204332051U (en) | 2014-12-26 | 2014-12-26 | based on the acquisition terminal of WIA-PA wireless communication module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104966395A (en) * | 2015-07-10 | 2015-10-07 | 四川奇石缘科技股份有限公司 | Outdoor unattended network monitoring system based on double CPUs (central processing units) |
| CN105788205A (en) * | 2014-12-26 | 2016-07-20 | 沈阳中科奥维科技股份有限公司 | Acquisition terminal based on WIA-PA wireless communication module and power management monitoring method thereof |
-
2014
- 2014-12-26 CN CN201420841789.9U patent/CN204332051U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105788205A (en) * | 2014-12-26 | 2016-07-20 | 沈阳中科奥维科技股份有限公司 | Acquisition terminal based on WIA-PA wireless communication module and power management monitoring method thereof |
| CN104966395A (en) * | 2015-07-10 | 2015-10-07 | 四川奇石缘科技股份有限公司 | Outdoor unattended network monitoring system based on double CPUs (central processing units) |
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