CN201527704U - Sensor for wireless data transmission with low energy consumption - Google Patents
Sensor for wireless data transmission with low energy consumption Download PDFInfo
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- CN201527704U CN201527704U CN2009201471463U CN200920147146U CN201527704U CN 201527704 U CN201527704 U CN 201527704U CN 2009201471463 U CN2009201471463 U CN 2009201471463U CN 200920147146 U CN200920147146 U CN 200920147146U CN 201527704 U CN201527704 U CN 201527704U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
According to a sensor for wireless data transmission of the utility model, a communication unit (10) of a sensor (1) obtains a wake-up signal (w) by a sensor (15) and is switched into an action mode from an energy-saving sleep mode. A receiver of the communication unit (10) detects a periodically repeating modulation synchronous signal of a base station, and then a transmitter (12) transmits a modulation data signal during a preset time period. The receiver (13) waits for receiving a modulation positive acknowledgement signal. After the signal is received, the communication unit (10) is switched into the sleep mode. Otherwise, the modulation data signal continues to be transmitted repeatedly in a time slot which is distributed to the sensor (1) continuously and repeatedly until one modulation positive acknowledge signal is received. The sensor has the following advantages that: the high energy consumption running state of the communication unit appears only when the data needs to be transmitted, and after the data is transmitted successfully by one time, the communication unit is switched into sleep mode again.
Description
Technical field
The utility model relates to communication technique field.The utility model relates to a kind of sensor, and it is used for data are carried out wireless transmission from sensor to the base station.
Background technology
Sensor, particularly proximity transducer are generally open, and are applied on automatic control sensor, production system and the technology class sensor.Proximity transducer can be measured on the convection cell plane people, or the position of workpiece or mechanical organ is implemented to measure.Near switch make people can convection cell, workpiece or mechanical organ near or survey away from implementing.For the wiring (this point has its advantage under a lot of situation of sensor) of removing sensor, sensor wirelessly transmits its measurement data by wireless mode.
Battery-driven sensor all has so-called park mode usually, reduces self energy consumption.In wireless telecommunication system, transmitter and receiver all are closed under park mode, are just periodically activated.Independently sensor for sensing data wirelessly being transferred to certain base station then has such task, promptly will keep sensor and move under minimum as far as possible energy consumption, must ensure the transmission of reliable sensors data simultaneously again.
TDMA time division multiple access communication technology is generally disclosed.This technology can be implemented in controlled and deterministic access (Zugriff) on the communication media.TDMA is applied in for example satellite communication, mobile communcations system (GSM) and the wireless telephone.
The utility model content
Task of the present utility model be realize a kind of low energy consumption data are carried out the sensor of wireless transmission from sensor to the base station, and avoid aforesaid drawbacks.
This task is data is finished from the sensor that sensor carries out wireless transmission to the base station by a kind of low energy consumption.Described sensor, be used for data are carried out wireless transmission from sensor unit to the base station by communication unit, wherein communication unit has and is used to receive modulated synchronization signal and the receiver of modulation affirmative acknowledgement signal and the transmitter that is used to send modulated data signal, wherein said receiver and described transmitter all have enable mode and park mode, it is characterized in that, described sensor has a dormancy unit that is used for switching according to the indication of the affirmative acknowledgement signal of the wake-up signal of sensor unit and receiver the mode of operation of receiver and transmitter, and described transmitter has the device that is used for repeating to send according to the indication of the negative acknowledgement of described receiver modulated data signal, and described receiver has and is used to receive the device of modulated synchronization signal and is used to generate make the device of described modulated data signal synchronous synchronizing signal on time domain.
According to the utility model, communication unit is obtained a wake-up signal and is cut into enable mode from energy-conservation park mode by its sensor unit that adheres to separately.Receive and detect the modulated synchronization signal of the periodicity repetition that sends out from the base station by a receiver of communication unit.Behind this acquisition of signal at interval after default time interval, send a modulated data signal by a transmitter of communication unit.Described receiver is then waited for a modulation affirmative acknowledgement signal.After receiving this type of signal, communication unit is cut dormant state once more.Otherwise modulated data signal is constantly constantly being repeated to send in the time slot that repeat, that belong to this communication unit, till receiving modulation affirmative acknowledgement signal.
According to the utility model, described communication unit also can be cut into activation or the park mode from different start time points by signal and go.
The utility model has following advantage, and promptly the high energy consumption running status of described communication unit only can just can occur when data must be transmitted, and will be cut in the park mode once more after once successful data transmit and go.
The further advantage of the utility model is that communication unit can be cut enable mode at once when sensing data occurs, and does not need to wait for the wake-up signal of base station.Because synchronizing signal can be by more frequent transmission (it be more reasonable for the wake-up signal of outside), so just can make sensing data by quickly to base station transmits.
At the utility model further in the improvement project, sensor is that a proximity transducer or one are near switch.Sensor is preferably inductance type, condenser type, photo-electric or ultrasonic sensor or Hall element.
Description of drawings
Further introduce the utility model below in conjunction with the utility model preferred embodiment shown in the accompanying drawing.Wherein:
Fig. 1 shows one schematically according to sensor of the present utility model;
Fig. 2 shows a signal frame;
Fig. 3 shows the process of a communication schematically;
Fig. 4 shows independent time slot in the signal frame.
The implication of the reference identification of Cai Yonging and its expression is all summed up in the reference identification tabulation and is listed in the drawings.Principle, identical in the accompanying drawings part has all been taked identical reference identification.
Embodiment
Fig. 1 shows the functional structure chart according to the sensor 1 of the sensor unit that has communication unit 10 and adhere to separately 15 of the present utility model schematically.Communication unit 10 has and is used for the electromagnetic antenna 11 that is connected with receiver 13 with transmitter 12 and dormancy unit 14.Communication unit 10 has to be used to transmit by receiver 13 and is connected to the synchronizing signal sync of transmitter 12 and the signal of negative acknowledgement nACK, be used to transmit by the signal of receiver 13 and connect to the affirmative acknowledgement signal ACK of dormancy unit 14, be used to transmit by the signal of dormancy unit 14 and be connected to the wake/sleep signal w/s of transmitter 12 and receiver 13, be used to transmit by the signal connection of sensor unit 15, and be used to transmit by the data connection of sensor unit 15 to the data-signal d of transmitter 12 to the wake-up signal w of dormancy unit 14.Communication unit 10 is transmitter 12 and receiver 13 particularly, has to be used for the enable mode that data transmit, and the park mode that needs utmost point low power consuming or do not need to consume energy.
Described communication is based on time division multiple access communication technology TDMA (Time DivisionMultiple Access).This type of communication technology is that the crowd knows, and is employed in the mobile phone.In Fig. 2, drawn the time domain flow process that a secondary data transmits in the tdma system along time shaft t.The base station sends one time synchronizing signal in each time slice 21, synchronizing signal for example is to add the modulation gained on carrier frequency.Communication unit 10 corresponding one or more sensors 1 of TDMA communication system receive modulated synchronization signal, and identify the start time point of a signal frame 20 on the time domain thus.In a plurality of sensors 1 each at least one time slot 22 in all can a corresponding signal frame 20 is just corresponding to the delay on the time domain between the start time point of a start time point by signal frame 20 (with respect to the reception of modulated synchronization signal 21) and time slot 22.This is the information that adheres to separately of time delay separately, is stored in the communication unit 10 of sensor 1 and in the base station.
Fig. 3 shows the sequence of signal on time domain of generation.Specifically, can be earlier the communication unit 10 of a sensor 1 be arranged on park mode.State transformation of its sensor unit that adheres to separately 15 experience therefore a wake-up signal w is sent to dormancy unit 14, and connection offers transmitter 12 with a data-signal d through data.Because this wake-up signal w, dormancy unit 14 is that transmitter 12 and receiver 13 generate a wake-up signal w/s, and it is cut enable mode by park mode.Receiver receives a signal by antenna 11, seeks modulated synchronization signal 21 for example on known carrier frequency, and in this signal, for example is by carrying out correlation calculations with the modulated synchronization signal of having stored to the received signal.After searching out, receiver 13 is promptly to transmitter 12 this synchronizing signal of transmission sync.By known in signal frame 20 position of the time slot 22 of respective sensor 1, can draw that default modulated synchronization signal 21 receives and distributed time slot 22 between time delay.After this time delay, transmitter transmits the modulated version d_m of a data-signal d by antenna 11 in the time slot that belongs to sensor 1.
At the utility model further in the improvement project, at receiver 13 for example is owing to being disturbed and when not receiving modulated synchronization signal 21 after park mode incision enable mode, and 22 internal clockings according to communication unit 10 of time slot that are used to transmit modulated data signal d_m are determined.This internal clocking according to the modulated synchronization signal 21 of base station or according to the other times signal for example be GPS (GPS) time signal and by synchronously.
Receive in the base station under the situation of modulated data signal d_m of a definite sensor 1, therefore the base station sends a modulation affirmative acknowledgement signal ACK_m.
At the utility model further in the improvement project, receive under the situation of a modulated data signal d_m in first time slot 22 in the base station, the base station can be with a corresponding modulation affirmative acknowledgement signal ACK_m at first immediately following sending within second time slot 22 behind first time slot.This relation is shown in Figure 4:
-the second modulated data signal d_m (n) is transmitted to the base station by second sensor 1;
-the first modulation affirmative acknowledgement signal ACK_m (n-1) of possible first modulated data signal is before transmitted to first sensor 1 by the base station afterwards;
-the 3rd modulated data signal d_m (n+1) is transmitted to the base station by the 3rd sensor 1 afterwards;
The second modulation affirmative acknowledgement signal ACK_m (n) of its reception of-the second last modulated data signal d_m (n) is transmitted to second sensor 1 by the base station.
This process has its advantage, and promptly the base station has sufficient time to judge, whether positively receives a modulated data signal in time slot 22.In improvement project further, modulation affirmative acknowledgement signal is to be sent out in k the time slot 22 after this time slot 22 that modulated data signal is received, and wherein k is greater than 1.The situation of k=1 is the process of the duration of a time slot 22 corresponding to the affirmative acknowledgement signal time delay of stating above then.The affirmative acknowledgement signal of the data-signal that is received in last k time slot 22 of a signal frame 20 then preferably sends in first k time slot 22 of next signal frame 20.
In the further improvement project of the utility model, the modulation affirmative acknowledgement signal ACK_m that is used for all the sensors 1 is used as modulation affirmative acknowledgement signal and organizes into groups and be transmitted, and does not so just have modulated data signal d_m between each modulation affirmative acknowledgement signal ACK_m.The transmission of this signal marshalling has a regular time translation with respect to modulated synchronization signal 21, for example is the end that is positioned at signal frame 20, or and then after the transmission of modulated synchronization signal 21.
Further in the improvement project, modulation affirmative acknowledgement signal ACK_m can be transmitted as modulated data signal d_m on another carrier frequency at the utility model.
Transmit but because when some disturbing effect do not have success, data had just been lost to the base station at the transmitter 12 of a modulated data signal d_m by a sensor 1.In order to ensure that however reliable data transmit, communication unit 10 can constantly repeat to send its data in follow-up signal frame 20, up to receiving relative modulation affirmative acknowledgement signal.After receiving this affirmative acknowledgement signal, communication unit 10 is promptly cut park mode again.
An example of this class process illustrates in Fig. 3 once more: after the transmission first time of modulated data signal d_m, receiver 13 does not receive any modulation affirmative acknowledgement signal ACK_m.For this reason, receiver 13 sends to 12 1 negative acknowledgement nACK of transmitter.Modulation affirmative acknowledgement signal ACK_m time slot 22 in by under the situation about waiting for, (this time slot is to closely follow after modulated data signal d_m), negative acknowledgement nACK can be generated after this time slot 22, shown in Fig. 3.In the above-mentioned another kind of development program of the utility model, wherein modulate affirmative acknowledgement signal ACK_m and how to be waited for and also can many I become negative acknowledgement nACK evening.And in any development program, transmitter 12 all can belong in next signal frame 20 in the time slot 22 of this sensor 10 and sends modulated data signal d_m again.Receiver 13 is when receiving a modulation affirmative acknowledgement signal ACK_m, as shown in Figure 3, be transferred to dormancy unit 14 1 affirmative acknowledgement signals ACK therefrom, dormancy unit 14 is that transmitter 12 and receiver 13 generate a sleep signal w/s therefrom, makes it cut park mode by enable mode by this signal.
Describe hereinbefore, the repeating of modulated data signal d_m sends, and the start time point of its corresponding time slot is decided according to existing modulated synchronization signal 21 in each signal frame with having superiority.Under the situation that such modulated synchronization signal 21 is not received, the start time point of time slot 22 can be had superiority decide according to the internal clocking of communication unit 10.This internal clocking can be by receiving modulated synchronization signal 21 by synchronously.
In a kind of favourable embodiment of the utility model, sensor be a proximity transducer or one near switch, the function of sensor unit realizes based on inductance type for example, condenser type, photo-electric principle of work or based on Hall effect or based on ultrasound wave.
Preferably, it is between the 1Hz to 4KHz that the utility model can adopt the sample period, and carrier frequency is within 100KHz to 5GHz scope, and data transmission rate is 1000 bps to 10M bps.
Particularly carrier frequency can be preferably within ISM (industry, science and medical treatment) frequency range, because so just do not need frequency license, for example can adopt to be approximately
2.4GHz carrier frequency.Preferably, the sensor signal sampling rate is approximately 1KHz, and signal frame 20 its frame lengths are approximately 1.25 microseconds or are approximately 5 microseconds, and the time interval of a time slot 22 is approximately 39 microseconds.
In the further improvement project of the utility model, include a plurality of base stations, have different sensor (1) grouping separately.For fear of interference each other, preferably, these different sensor group adopt different frequency bands or/or different synchronous signal sequences.
Reference identification:
1 sensor
10 communication units
11 antennas
12 transmitter Tx
13 receiver Rx
14 dormancy unit CHRR
15 sensor unit S
20 signal frames
21 modulated synchronization signal
22 time slots
The w wake-up signal
W/s wake/sleep signal
The synch synchronizing signal
The d data-signal
The d_m modulated data signal
ACK affirmative acknowledgement signal
The nACK negative acknowledgement
ACK_m modulation affirmative acknowledgement signal
The t time shaft.
Claims (3)
1. the sensor that transmits of a wireless data, be used for data are carried out wireless transmission from sensor unit (15) to the base station by communication unit (10), wherein communication unit (10) has and is used to receive modulated synchronization signal (21) and the receiver (13) of modulation affirmative acknowledgement signal and the transmitter (12) that is used to send modulated data signal, wherein said receiver (13) and described transmitter (12) all have enable mode and park mode, it is characterized in that
Described sensor has a dormancy unit (14) that is used for switching according to the indication of the affirmative acknowledgement signal of the wake-up signal of sensor unit (15) and receiver (13) mode of operation of receiver (13) and transmitter (12),
And described transmitter (12) has the device that is used for repeating to send according to the indication of the negative acknowledgement of described receiver modulated data signal, and described receiver (13) has and is used to receive the device of modulated synchronization signal (21) and is used to generate make the device of described modulated data signal synchronous synchronizing signal on time domain.
2. sensor according to claim 1 is characterized in that, described sensor is assigned default time delay between the transmission of the reception of described modulated synchronization signal (21) and described modulated data signal.
3. sensor according to claim 1 is characterized in that, described sensor unit (15) is that a proximity transducer or one are near switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201471463U CN201527704U (en) | 2009-05-15 | 2009-05-15 | Sensor for wireless data transmission with low energy consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201471463U CN201527704U (en) | 2009-05-15 | 2009-05-15 | Sensor for wireless data transmission with low energy consumption |
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| Publication Number | Publication Date |
|---|---|
| CN201527704U true CN201527704U (en) | 2010-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201471463U Expired - Lifetime CN201527704U (en) | 2009-05-15 | 2009-05-15 | Sensor for wireless data transmission with low energy consumption |
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| Country | Link |
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| CN (1) | CN201527704U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103428830A (en) * | 2012-05-15 | 2013-12-04 | 深圳市华奥通通信技术有限公司 | Wireless communication system and method |
| CN115489907A (en) * | 2022-09-28 | 2022-12-20 | 郑州森鹏电子技术股份有限公司 | Low-power-consumption wireless weighing system and garbage truck |
-
2009
- 2009-05-15 CN CN2009201471463U patent/CN201527704U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103428830A (en) * | 2012-05-15 | 2013-12-04 | 深圳市华奥通通信技术有限公司 | Wireless communication system and method |
| CN103428830B (en) * | 2012-05-15 | 2016-12-07 | 深圳市华奥通通信技术有限公司 | A kind of wireless communication system and method |
| CN115489907A (en) * | 2022-09-28 | 2022-12-20 | 郑州森鹏电子技术股份有限公司 | Low-power-consumption wireless weighing system and garbage truck |
| CN115489907B (en) * | 2022-09-28 | 2024-05-03 | 郑州森鹏电子技术股份有限公司 | Low-power consumption wireless weighing system and garbage truck |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100714 |