CN101373981A - Wireless searching and positioning apparatus based on wireless awakening technology and energy consumption control method thereof - Google Patents

Abstract

The invention relates to a wireless location orientation device based on wireless wake-on technology and an energy consumption control method thereof. The device comprises an antenna; a wireless transceiver unit connected with the antenna; a wake-on timer which is connected with the wireless transceiver unit and used for providing a timing wake-on signal to the wireless transceiver unit; and a judgment logic circuit which is connected with the wireless transceiver unit and used for judging whether the data received from the antenna by the wireless transceiver unit is corrected, and transmitting the data to a microprocessor connected with the judgment logic circuit and providing the data which needs to be transmitted by the antenna to the wireless transceiver unit in case of correctness. By using the wireless wake-on technology, the wireless location orientation device has very low energy consumption, so as to basically prolong the service life of a battery. The wake-on timer which is independent of the microprocessor can directly control the dormancy and operation time of the wireless transceiver unit; and such structure has low energy consumption and rapid control response speed compared with the control using an internal timer inside the microprocessor in the prior art.

Description

Wireless searching positioner and consumption control method thereof based on wireless awakening technology

Technical field

The present invention relates to a kind of wireless searching positioner, can be used for wrecked personnel's such as mine, fire, earthquake search location based on wireless awakening technology.

Background technology

Wireless awakening is a kind of technology that can wake the wireless receiver that is in the semidormancy up from afar, and the semidormancy here is meant that wireless receiver is in the low duty ratio operating state, and promptly the most of the time is dormancy, and having only the utmost point short time is work.The wireless searching positioner prolongs the stand-by time of the battery of this kind equipment because how the particularity of using reduces power consumption, becomes the direction of those skilled in the art's research.

Summary of the invention

The object of the present invention is to provide the low wireless searching positioner of a kind of power consumption based on wireless awakening technology.

For reaching above-mentioned purpose, the present invention adopts following technical scheme:

A kind of wireless searching positioner based on wireless awakening technology comprises:

Antenna;

The wireless transmit/receive units that is connected with antenna;

What link to each other with wireless transmit/receive units wakes timer up, is used to wireless transmit/receive units that the timing wake-up signal is provided;

The decision logic circuit that links to each other with wireless transmit/receive units is used to judge the whether correct of data that wireless transmit/receive units receives from antenna, if correctly then data are sent to microprocessor;

Microprocessor links to each other with the decision logic circuit, is used to handle the data of transmitting with the analysis and judgement logical circuit, and providing to wireless transmit/receive units need be by the data of antenna transmission.

Further, the described timer that wakes up is connected with microprocessor, is provided with waking the timer time of carrying out up by described microprocessor.

Further, also comprise power module, described power module with wireless transmit/receive units, wake timer, decision logic circuit up, microprocessor is connected and provide electric power for it.

Further, also comprise a shell, described power module, wireless transmit/receive units, wake timer, decision logic circuit, microprocessor up and place in this shell.

Further, also comprise indicator light and the button be located on the described shell, described indicator light links to each other with microprocessor with button.

Further, described wireless transmit/receive units, decision logic circuit, wake timer up and be integrated in the integrated circuit.

A kind of consumption control method of wireless searching positioner adopts above-mentioned wireless searching positioner based on wireless awakening technology, may further comprise the steps:

1) wakes timer timing wake-up wireless transmit/receive units up,, then wake the decision logic circuit up if the signal strength signal intensity that wireless transmit/receive units is received surpasses the thresholding of setting;

2) whether the frame structure that receives of decision logic circuit judges is eligible, if not, then abandons receiving and continues sleep; If then after the decision logic processing of circuit, wake microprocessor up;

3) microprocessor is handled the data of receiving.

The present invention has the following advantages:

1, adopts wireless awakening technology, make that the power consumption of wireless searching positioner is extremely low, fundamentally prolonged the life-span of battery; And do not send any signal under the normality, thus the pollution of radio wave can not caused to periphery, and some traditional positioning equipments need periodically send information.

2, the present invention is by a timer that wakes up that is independent of beyond the microprocessor, it can directly control the dormancy and the operating time of wireless transceiver circuit, this structure with use traditional microprocessor internal timer control compare low in energy consumption and also controls reaction speed fast.

3, the present invention is independent of the correctness that microprocessor logic judging circuit is in addition directly judged wireless information reception by one, this structure comes the mode of decision logic to compare with traditional microprocessor, not only reduced the useless stand-by time of receiver, and can allow microprocessor be in dormancy, reduce power consumption.

Description of drawings

Fig. 1 is an embodiment of the invention schematic diagram;

Fig. 2 is an embodiment of the invention shell schematic diagram;

Fig. 3 is an embodiment of the invention energy consumption hierarchy schematic diagram;

Fig. 4 is an embodiment of the invention energy consumption control flow;

Fig. 5 is an embodiment of the invention wireless awakening sequential chart.

Embodiment

As shown in Figure 1, a kind of wireless searching positioner based on wireless awakening technology comprises:

Antenna 1;

The wireless transmit/receiveunits 2 that is connected withantenna 1;

What link to each other with wireless transmit/receiveunits 2wakes timer 4 up, is used to wireless transmit/receiveunits 2 that the timing wake-up signal is provided;

Thedecision logic circuit 3 that links to each other with wireless transmit/receiveunits 2 is used to judge the whether correct of data that wireless transmit/receiveunits 2 receives fromantenna 1, if correctly then data are sent to microprocessor (MCU) 5;

Microprocessor 5 is used to handle the data of transmitting with analysis and judgementlogical circuit 3, and providing to wireless transmit/receiveunits 2 need be by the data ofantenna 1 transmission.

Wherein, the describedtimer 4 that wakes up is connected withmicroprocessor 5, wakestimer 4 up by 5 pairs of described microprocessors and carries out the time setting.

Wherein, also comprisepower module 6, describedpower module 6 with wireless transmit/receiveunits 2,decision logic circuit 3,wake timer 4 up,microprocessor 5 is connected and provide electric power for it.The describedpower module 6 of stating can adopt battery, conveniently to carry.Wherein,decision logic circuit 3 can adopt field programmable gate array (FPGA, Field-programmable gate array) circuit.

As shown in Figure 2, also comprise a shell, describedpower module 6, wireless transmit/receiveunits 2,wake timer 4,decision logic circuit 3,microprocessor 5 up and place in this shell.In addition,antenna 1 can adopt built-in aerial, and is built in this shell.

Wherein,indicator light 7 on the described shell andbutton 8, describedindicator light 7 links to each other withmicroprocessor 5 withbutton 8.

Wherein, described wireless transmit/receiveunits 2,decision logic circuit 3, waketimer 4 up and be integrated in the integrated circuit.

Very simple to the operation that present embodiment provides based on the wireless searching positioner of wireless awakening technology, by abutton 8 and anindicator light 7 on the panel, can set that button is motionless to be normality, and be in the reception response status; For searching call state, can launch wireless paging signals and wait for the reception answer signal whenbutton 8 is pressed.

During use, adopt above-mentioned two wireless searching positioners based on wireless awakening technology, for searching calling set, another is for receiving transponder with one of them.It is in full accord with reception transponder structure to search calling set, byfunction button 8 its working methods of decision.Usually be in resting state during as the reception transponder, during search, its course of work is as follows:

1) searches calling set and initiatively send wireless paging signals;

2) after the reception transponder was waken up by wireless paging signals, call signal had been received in glittering itsindicator light 7 expressions;

3) receive transponder and return an answer signal to pursuit airplane;

4) pursuit airplane is receivedglittering indicator light 7 behind the answer signal, and expression is received and replied.

In the above-mentioned course of work, if the rescue worker pushesbutton 8,indicator light 7 is glittering, then represent by searching target in the communication distance scope, otherwise target is not in search area.

For power consumption is reduced as much as possible, the wireless searching positioner that present embodiment provides based on wireless awakening technology, on hardware, adopt the energy consumption heterarchical architecture, as shown in Figure 3, wireless transmit/receiveunits 2, wake that to decidedevice device 4 be the first energy consumption layer up, FPGAdecision logic circuit 3 is the second energy consumption layer, andmicroprocessor 5 is the 3rd energy consumption layer.Wherein, wireless transmit/receiveunits 2 comprises radio frequency (RF) transceiver module, signal strength detector (RSSI), decidesdevice device 4 and periodically wakes up and intercept wireless channel whether call signal is arranged by waking up.RSSI can be used to the interference signal that filtered signal intensity is lower than set point, thereby reduces unnecessary reviving to save electric energy.Because radio frequency (RF) transceiver module, signal strength detector (RSSI) are prior art, therefore omit detailed description to this part.Energy consumption hierarchical control flow process specifically describes as follows as shown in Figure 4:

1) wakes timer timing wake-up wireless transmit/receive units up, the radio frequency of wireless transmit/receive units (RF) transceiver module received signal judges that through field intensity detector (RSSI) this signal is enough strong, when having surpassed the thresholding of setting, then wake the FPGA decision logic circuit of the second energy consumption layer up, enter step 2); Otherwise step 1) is changeed in filtering;

2) whether FPGA decision logic circuit judges frame structure is eligible, if not the information frame that oneself will receive is then abandoned receiving and continued sleep, changes step 1); If decision logic circuit judges frame structure is eligible, then after the decision logic processing of circuit, wake the MCU of the 3rd energy consumption layer up;

3) MCU is for further processing to the data of receiving.The MCU power consumption of a new generation has been done very lowly, and there is the energy consumption control logic its inside, can not enter park mode when each functional module is not worked.

In the present embodiment, can adopt the wireless communication module and the wireless awakening agreement of 433MHz frequency range, the data frame format of transmission is as shown in the table:

Lead code

Synchronization character (32bit)

Address (8bit)

Data field (8bit)

CRC check (16bit)

The transmitting-receiving sequential chart of wireless awakening as shown in Figure 5, effectively time of reception t_RX must be greater than the frameperiod time T 1 that sends signal, otherwise receiver may be missed the frame that will receive.And T1 be by TX send wake Frame duration TX up and free time (IDEL) duration determines.

When receiver is waken up, if in the t_RX time slot, do not find effectively to search frame, then enter sleep again, shown in the A moment among Fig. 5 at once.If find effectively to search frame in the t_RX time slot, and data receive that all then sleep at once just finishes in the time of need not waiting t_RX to be all over, as B among Fig. 5 constantly shown in, B1 is possible RX time-delay among the figure.If find effective frame in the t_RX time slot, data did not also harvest when t_RX was all over, and then must wait until just to enter sleep after all receiving, and shown in the C moment, C1 is that RX extends to the TX postamble among the figure.

Above-described embodiment only is used to illustrate technological thought of the present invention and characteristics, its purpose makes those skilled in the art can understand content of the present invention and is implementing according to this, therefore can not only limit claim of the present invention with present embodiment, be all equal variation or modifications of doing according to disclosed spirit, still drop in the claim of the present invention.

Claims (7)

1. wireless searching positioner based on wireless awakening technology is characterized in that comprising:

Antenna;

The wireless transmit/receive units that is connected with antenna;

What link to each other with wireless transmit/receive units wakes timer up, is used to wireless transmit/receive units that the timing wake-up signal is provided;

The decision logic circuit that links to each other with wireless transmit/receive units is used to judge the whether correct of data that wireless transmit/receive units receives from antenna, if correctly then data are sent to microprocessor;

Microprocessor links to each other with the decision logic circuit, is used to handle the data of transmitting with the analysis and judgement logical circuit, and providing to wireless transmit/receive units need be by the data of antenna transmission.

2. the wireless searching positioner based on wireless awakening technology according to claim 1 is characterized in that: the described timer that wakes up is connected with microprocessor, is provided with waking the timer time of carrying out up by described microprocessor.

3. the wireless searching positioner based on wireless awakening technology according to claim 1, it is characterized in that: also comprise power module, described power module with wireless transmit/receive units, wake timer, decision logic circuit up, microprocessor is connected and provide electric power for it.

4. the wireless searching positioner based on wireless awakening technology according to claim 1 is characterized in that: also comprise a shell, described power module, wireless transmit/receive units, wake timer, decision logic circuit, microprocessor up and place in this shell.

5. the wireless searching positioner based on wireless awakening technology according to claim 4 is characterized in that: also comprise indicator light and the button be located on the described shell, described indicator light links to each other with microprocessor with button.

6. the wireless searching positioner based on wireless awakening technology according to claim 1 and 2 is characterized in that: described wireless transmit/receive units, decision logic circuit, wake timer up and be integrated in the integrated circuit.

7. the consumption control method of a wireless searching positioner adopts arbitrary described wireless searching positioner based on wireless awakening technology in the claim 1 to 6, it is characterized in that may further comprise the steps:

1) wakes timer timing wake-up wireless transmit/receive units up,, then wake the decision logic circuit up if the signal strength signal intensity that wireless transmit/receive units is received surpasses the thresholding of setting; Enter step 2); Otherwise step 1) is changeed in filtering;

2) whether the frame structure that receives of decision logic circuit judges is eligible, if not, then abandons receiving and continues sleep, changes step 1); If, then after the decision logic processing of circuit, wake microprocessor up, enter step 3);

3) microprocessor is handled the data of receiving.

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