CN107071717A - A kind of collecting method and device based on Bluetooth technology - Google Patents
A kind of collecting method and device based on Bluetooth technology Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- 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
The invention discloses a kind of collecting method and device based on Bluetooth technology.The collecting method comprises the following steps：Step S1, receives the wireless data from bluetooth equipment, the wireless data is the wireless data of broadcasting packet form；Step S2, judges whether the wireless data defers to acquisition protocols, if so, then performing step S3；Step S1 is performed if it is not, then returning；Step S3, is directly parsed to the wireless data of the broadcasting packet form.The collecting method can realize the collection of data, and can reduce the power consumption of transmission data, and can greatly improve the quantity gathered in real time.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a data acquisition method and device based on a Bluetooth technology.
Background
Bluetooth is a technical specification of short-distance wireless communication, is widely applied to the fields of various telephone systems, wireless cables, electronic commerce and the like, and can exchange wireless information among a plurality of devices including mobile phones, PDAs, wireless headsets, notebook computers, related peripherals and the like.
In the bluetooth low energy specification, there are two types of messages, namely broadcast messages and data messages, and the current bluetooth device discovers and connects other devices by using the broadcast messages, and then performs data transmission in the form of data messages after the connection is successful. Specifically, as shown in fig. 1, the wearable low power consumption bluetooth device 11 sends out a broadcast message, after finding the broadcast message, the bluetooth acquisition device 12 requests to establish connection with the wearable low power consumption bluetooth device 11, after the bluetooth acquisition device 12 receives a connection confirmation signal of the wearable low power consumption bluetooth device 11, the wearable low power consumption bluetooth device 11 is successfully connected with the bluetooth acquisition device 12, and then the bluetooth acquisition device 12 reads a data message sent out by the wearable low power consumption bluetooth device 11, that is, device parameters 1 and 2 … n, and after the bluetooth acquisition device 12 finishes reading the data message, a disconnection signal is sent out.
The following disadvantages exist in the data transmission in the form of data messages:
firstly, the bluetooth collection device 12 can only collect data of 1-7 low-power wearable bluetooth devices 11 simultaneously, and the number of the collected bluetooth devices is limited, so that the data cannot be collected by dozens or even hundreds of low-power wearable bluetooth devices simultaneously.
Secondly, the power consumption is large when data are transmitted between the low-power wearable bluetooth device 11 and the bluetooth acquisition device 12 in a data message format, and therefore, the power requirement on the low-power wearable bluetooth device 11 is high.
Disclosure of Invention
The invention aims to provide a data acquisition method and a data acquisition device based on a Bluetooth technology, which are used for solving the problems that the existing Bluetooth data acquisition equipment is large in power consumption when transmitting data and limited in the number of simultaneously acquired targets.
In order to achieve the above object, the present invention provides a data acquisition method based on bluetooth technology to reduce the power consumption of data transmission and increase the number of simultaneously acquired targets. Specifically, the method comprises the following steps:
step S1, receiving wireless data from Bluetooth equipment, wherein the wireless data is in the form of broadcast messages;
step S2, judging whether the wireless data complies with the collection protocol, if yes, executing step 3; if not, returning to execute the step S1;
and step S3, directly analyzing the wireless data in the form of the broadcast message.
Wherein, in the step S2, it is determined whether the wireless data conforms to the collection protocol according to the protocol identification bit in the wireless data.
Preferably, the protocol identification bit is set at a fixed position of a digital field in the wireless data.
Wherein the step S3 includes: judging whether a data identification bit in the wireless data conforms to a condition analysis table which is imported in advance, if so, analyzing the wireless data according to the condition analysis table; if not, ignoring the wireless data.
The wireless data processing device comprises a plurality of conditional analysis tables, and when the wireless data are analyzed, whether the data identification bits conform to one of the conditional analysis tables is sequentially judged, and if the data identification bits do not conform to any conditional analysis table, the wireless data are ignored.
Preferably, the data identification bit is provided at a fixed position of a digital field in the wireless data.
In addition, the invention also provides a data acquisition device based on the Bluetooth technology, which comprises:
the Bluetooth data receiving unit is used for receiving wireless data of Bluetooth equipment, wherein the wireless data is in a broadcast message form;
the judging unit is used for judging whether the wireless data conforms to an acquisition protocol;
and the analysis unit is used for directly analyzing the wireless data in the broadcast message form.
Wherein the judging unit judges whether the wireless data conforms to the acquisition protocol according to a protocol identification bit in the wireless data.
Wherein, the analysis unit comprises a judgment module and a data analysis module, wherein,
the judging module is used for judging whether the data identification bits in the wireless data conform to a pre-imported condition analysis table or not;
and the data analysis module is used for analyzing the wireless data according to the condition analysis table.
The method of the invention has the following advantages:
according to the data acquisition method based on the Bluetooth technology, the acquired wireless data is wireless data in a broadcast message form, the judgment and the analysis are carried out according to the wireless data in the broadcast message form, and the power consumption for transmitting the wireless data in the broadcast message form is low, so that the data acquisition method can realize the data transmission and reduce the power consumption for transmitting the data, and the operation time of a Bluetooth device for sending the wireless data and a data acquisition device for acquiring the wireless data is prolonged; moreover, the data acquisition device can simultaneously acquire the wireless data in the form of 120-240 broadcast messages, so that the real-time acquisition quantity is greatly increased.
In addition, in the data acquisition device based on the bluetooth technology, the bluetooth data receiving unit receives the wireless data in the form of the broadcast message, and the judging unit and the analyzing unit identify and analyze the wireless data in the form of the broadcast message, in other words, the data acquisition device directly acquires the wireless data in the form of the broadcast message to obtain the required monitoring information, and the power consumption for transmitting the wireless data in the form of the broadcast message is low, so that the data acquisition method can realize the transmission of the data and reduce the power consumption for transmitting the data, thereby prolonging the operation time of the bluetooth equipment for sending the wireless data and the data acquisition device for acquiring the wireless data; moreover, the data acquisition device can simultaneously acquire the wireless data in the form of 120-240 broadcast messages, so that the real-time acquisition quantity is greatly increased.
Drawings
Fig. 1 is a flowchart of a conventional bluetooth acquisition device acquiring data of a single bluetooth low energy device.
Fig. 2 is a flowchart of a data acquisition method based on bluetooth technology according to an embodiment of the present invention.
Fig. 3 is a flowchart of a data acquisition method based on bluetooth technology according to a second embodiment of the present invention.
Fig. 4 is a schematic block diagram of a data acquisition device based on bluetooth technology according to a third embodiment of the present invention.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
The embodiment provides a data acquisition method based on a Bluetooth technology, which mainly aims at the transmission of monitoring data of a wearable sensor. As shown in fig. 2, the data acquisition method based on bluetooth technology includes the following steps:
in step S1, wireless data in the form of broadcast messages is received from the bluetooth device.
The format of the wireless data in the form of broadcast messages is:
the definition rule of the data field is as table one, the protocol identification bit is fixed at the [6-7] th bit of the digital field and is used for identifying the protocol type of the wireless data, and the data identification bit is fixed at the [8-9] th bit of the digital field and is used for identifying the format of the data in the wireless data. Of course, the protocol identification bit and the data identification bit may be defined in other fixed positions according to actual needs, or the protocol identification bit and the data identification bit may be arranged in a digital field in the wireless data in a floating manner. However, it is preferable to arrange the protocol identification bit and the data identification bit at fixed positions of the digital field in the wireless data, so that the identification efficiency of the wireless data can be improved, and the transmission efficiency of the wireless data can be improved.
Table one:
| name of field | Data content | Description of the invention | |
| 1 | Data length | 0x02 | Data length |
| 2 | Ad-type | 0x01 | BLE_GAP_AD_TYPE_FLAGS |
| 3 | Data content | 0x06 | Broadcast connection type |
| 4 | Data length | 0x1A | Data length |
| 5 | AD_type | 0xFF | GAP_AD_TYPE_MANUFACTURER_SPECIFIC_DATA |
| 6-7 | Protocol identification bits | 0x5A53 | Device identification number |
| 8-9 | Data identification bit | 0x0003 | Data format for parsing a bearer |
| 10-31 | Custom data |
Step S2, judging whether the wireless data complies with the collection protocol, if yes, executing step 3; if not, the process returns to step S1.
In the environment monitoring space, there are often more bluetooth devices, these bluetooth devices come from different producers, and the agreement type that different producers' bluetooth device carried is different, and data acquisition device need screen these wireless data, selects the wireless data that need gather. In this embodiment, whether the wireless data belongs to the wireless data to be acquired is determined according to the acquisition protocol, and if the wireless data conforms to the acquisition protocol, the wireless data is considered to belong to the wireless data to be acquired. Specifically, the protocol identification bit of the wireless data is determined, that is, the [6-7] th bit of the digital field in the wireless data is determined, if the [6-7] th bit is determined to be 0x5a53, if yes, the wireless data is considered to belong to the wireless data to be collected, and step S3 is executed; if not, the wireless data is not considered to be the wireless data needing to be collected, and the wireless data is ignored.
And step S3, directly analyzing the wireless data in the form of the broadcast message.
If the piece of wireless data complies with the collection protocol, it is determined in step S2 that the piece of wireless data needs to be parsed. When analyzing the wireless data, firstly, it is determined whether the data identification bit in the wireless data complies with the preset conditional constraint table, that is, whether the [8-9] th bit of the digital field in the wireless data complies with the preset conditional constraint table, if it is determined whether the [8-9] th bit of the digital field in the wireless data is 0x0001, it indicates that the wireless data can be analyzed if it is.
In this embodiment, the data identification bits are determined according to a condition analysis table, where the condition analysis table may be preset according to specific needs, and may set one condition analysis table, or may set multiple condition analysis tables, and each condition analysis table may include one test data, or may include multiple test data. And if the corresponding condition analysis table cannot be searched according to the data identification bit, ignoring the wireless data. And if the corresponding condition analysis table is found according to the data identification bit, analyzing the wireless data according to the condition analysis table.
When the data acquisition device is internally provided with a plurality of condition acquisition tables, the data acquisition device analyzes the wireless data and sequentially judges whether the data identification bits in the wireless data are consistent with one of the condition analysis tables, and if the data identification bits are not consistent with any condition analysis table, the wireless data is ignored. The inventors considered that such a case did not exist, and if such a case occurred, it was explained that the introduced condition analysis table had a problem.
It should be noted that the condition analysis table may be imported into the data collection device at any time before step S3, for example, before step S1 is executed or before step S2 is executed.
In the first embodiment, the wireless data is in the form of broadcast messages, and the judgment and the analysis are performed according to the wireless data in the form of broadcast messages, and the power consumption for transmitting the wireless data in the form of broadcast messages is low, so that the data acquisition method can realize data transmission and reduce the power consumption for transmitting the data, thereby prolonging the operation time of the bluetooth device for sending the wireless data and the data acquisition device for acquiring the wireless data; moreover, the data acquisition device can simultaneously acquire the wireless data in the form of 120-240 broadcast messages, so that the real-time acquisition quantity is greatly increased.
Example 2
The second embodiment introduces another data collection method based on bluetooth technology. As shown in fig. 3, the data acquisition method based on bluetooth technology includes the following steps:
step S21, receiving wireless data from the bluetooth device, the wireless data being data in the form of broadcast messages.
In the present embodiment, in the wireless data based on the broadcast message format, it is assumed that bits [6-7] of the data field are protocol identification bits, and the data content of the protocol identification bits is 0x5a 53; the [8-9] th bit is a data identification bit, the data content of the data identification bit is 0x0003, in the self-defined data, the [10-11] th bit is heart rate data, the [12-13] th bit is blood oxygen data, and the [14-15] th bit is blood pressure data.
Step S22, judging whether the wireless data complies with the collection protocol, if yes, executing step 23; if not, the process returns to step S21.
When receiving the wireless data, firstly, judging whether the [6-7] th bit of the data field is 0x5A53, if so, determining that the wireless data meets the acquisition protocol, and executing a step S23; if not, the wireless data is considered not to meet the acquisition protocol, and the wireless data is ignored.
Step S23, judging whether the [8-9] th bit in the data field follows the form number of the first condition analysis table, if not, executing step 24; if yes, go to step S27.
In this embodiment, the condition analysis table selection is imported into the data collection device after the execution of step S21 is completed and before the execution of step S22 is started, and three condition analysis tables, that is, a first condition analysis table, a second condition analysis table, and a third condition analysis table are imported, and it is assumed that the form number of the first condition analysis table is 0x0001, the form number of the two condition analysis table is 0x0002, and the form number of the third condition analysis table is 0x 0003.
Step S24, judging whether the [8-9] th bit in the data field conforms to the form number of the second condition analysis table, if not, executing step S25; if yes, go to step S27.
Step S25, judging whether the [8-9] th bit in the data field conforms to the form number of the third condition resolution table, if not, executing step S26; if yes, go to step S27.
If the [8-9] th bit in the data field is 0x0003, the wireless data is considered to conform to the form number of the third condition resolution table, and the wireless data can be resolved according to the third condition resolution table.
Step S26, the wireless data is ignored.
In step S27, the wireless data is analyzed.
And analyzing the wireless data according to the third condition analysis table to obtain heart rate data, blood oxygen data and blood pressure data.
It should be noted that the data acquisition methods provided in the first and second embodiments are mainly directed to wireless transmission of detection data obtained by sensors in the wearable device, where the sensors include but are not limited to one or more of a height sensor, a weight sensor, a heart rate sensor, a blood oxygen sensor, a blood pressure sensor, and a body temperature sensor, the data obtained by the sensors has only 1-2 bytes, and a required detection signal can be completely contained in wireless data in the form of a broadcast message without packetization, so that the data acquisition process does not need to be packetized, and the wireless data in the form of broadcast message can safely and reliably transmit data and reduce power consumption for transmitting data. In addition, as the wearable sensor detects continuous human body characteristic parameters, the final detection result is not influenced as long as a long-time continuous packet loss phenomenon does not occur.
In the data acquisition method based on the bluetooth technology provided in the second embodiment, the wireless data acquired by the data acquisition device is wireless data in a broadcast message form, and the judgment and the analysis are performed according to the wireless data in the broadcast message form, and the power consumption for transmitting the wireless data in the broadcast message form is low, so that the data acquisition method can realize data transmission and reduce the power consumption for transmitting the data, thereby prolonging the operation time of the bluetooth device for sending the wireless data and the data acquisition device for acquiring the wireless data; moreover, the data acquisition device can simultaneously acquire the wireless data in the form of 120-240 broadcast messages, so that the real-time acquisition quantity is greatly increased.
Example 3
The third embodiment provides a data acquisition device based on the Bluetooth technology. As shown in fig. 4, the data collecting apparatus based on the bluetooth technology includes a bluetooth data receiving unit 41, a judging unit 42, and an analyzing unit 43. Wherein,
the bluetooth data receiving unit 41 is configured to receive wireless data of a bluetooth device, and the wireless data is wireless data in the form of a broadcast message. What bluetooth device sent is the detection data that sensor obtained in the wearable equipment, and the sensor includes but not limited to including one or several in height sensor, weight sensor, heart rate sensor, blood oxygen sensor, blood pressure sensor or body temperature sensor.
The determination unit 42 is used for determining whether the wireless data complies with the acquisition protocol. A protocol identification bit is arranged at a fixed position of a data field in the wireless data, the judging unit 42 judges whether the wireless data conforms to the acquisition protocol according to the protocol identification bit, and if the wireless data conforms to the acquisition protocol, the analyzing unit 43 analyzes the wireless data; if the acquisition protocol is not followed, the wireless data is ignored.
In this embodiment, the bluetooth device for sending wireless data is a wireless data sending device in the bluetooth low energy intelligent wearable device. This bluetooth low energy intelligence wearing equipment includes one or several kinds in heart rate sensor, blood oxygen sensor, blood pressure sensor and the motion sensor, certainly, bluetooth low energy intelligence wearing equipment still includes the bluetooth low energy equipment that is used for sending wireless data, that is to say, the data that heart rate sensor, blood oxygen sensor, blood pressure sensor and motion sensor detected are through bluetooth low energy equipment outwards send with the broadcast message form.
The analysis unit 43 is configured to directly analyze the wireless data in the form of broadcast messages, and the analysis unit 43 analyzes the wireless data according to a condition analysis table, where the condition analysis table is preset in a data acquisition device based on the bluetooth technology.
The parsing unit 43 of the present embodiment includes a determining module 431 and a data parsing module 432, wherein,
the determining module 431 is configured to determine whether the data identification bits in the wireless data conform to a pre-imported conditional parsing table, and if so, determine that parsing is possible, and if not, determine that parsing is impossible. The data identification bit is set at a fixed position of the data field, and the determining module 431 determines whether the data content at the fixed position complies with the form number in the condition parsing table, i.e. whether the wireless data can be parsed.
The data parsing module 432 is configured to parse the wireless data according to the condition parsing table to obtain the required information.
In the data acquisition device based on the bluetooth technology provided in the third embodiment, the bluetooth data receiving unit receives the wireless data in the form of the broadcast message, and the determining unit and the analyzing unit identify and analyze the wireless data in the form of the broadcast message, so as to obtain the required monitoring information, in other words, the data acquisition device directly acquires the wireless data in the form of the broadcast message, so as to obtain the required monitoring information, and the power consumption for transmitting the wireless data in the form of the broadcast message is low, so that the data acquisition method can realize data transmission and reduce the power consumption for transmitting the data, thereby prolonging the operation time of the bluetooth device sending the wireless data and the data acquisition device acquiring the wireless data; moreover, the data acquisition device can simultaneously acquire the wireless data in the form of 120-240 broadcast messages, so that the real-time acquisition quantity is greatly increased.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (9)
1. A data acquisition method based on Bluetooth technology is characterized by comprising the following steps:
step S1, receiving wireless data from Bluetooth equipment, wherein the wireless data is in the form of broadcast messages;
step S2, judging whether the wireless data complies with the collection protocol, if yes, executing step S3; if not, returning to execute the step S1;
and step S3, directly analyzing the wireless data in the form of the broadcast message.
2. The data collection method based on Bluetooth technology of claim 1, wherein in the step S2, it is determined whether the wireless data conforms to the collection protocol according to a protocol identification bit in the wireless data.
3. The method of claim 2, wherein the protocol identification bit is located at a fixed position in a digital field of the wireless data.
4. The data acquisition method based on bluetooth technology as claimed in claim 1, wherein the step S3 comprises: judging whether a data identification bit in the wireless data conforms to a condition analysis table which is imported in advance, if so, analyzing the wireless data according to the condition analysis table; if not, ignoring the wireless data.
5. The method as claimed in claim 4, wherein the condition resolution tables are plural, and when the wireless data is resolved, it is sequentially determined whether the data identification bit complies with one of the condition resolution tables, and if not, the wireless data is ignored.
6. The method of claim 4, wherein the data identification bit is located at a fixed position in the digital field of the wireless data.
7. A data acquisition device based on Bluetooth technology, characterized in that, data acquisition device includes:
the Bluetooth data receiving unit is used for receiving wireless data of Bluetooth equipment, wherein the wireless data is in a broadcast message form;
the judging unit is used for judging whether the wireless data conforms to an acquisition protocol;
and the analysis unit is used for directly analyzing the wireless data in the broadcast message form.
8. The data collection device based on Bluetooth technology of claim 7, wherein the determination unit determines whether the wireless data conforms to the collection protocol according to a protocol identification bit in the wireless data.
9. The data collection device based on Bluetooth technology of claim 7, wherein the parsing unit comprises a judgment module and a data parsing module, wherein,
the judging module is used for judging whether the data identification bits in the wireless data conform to a pre-imported condition analysis table or not;
and the data analysis module is used for analyzing the wireless data according to the condition analysis table.
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Application publication date: 20170818 |