Data acquisition system and method based on passive Internet of Things

Abstract

The invention relates to the technical field of the Internet of Things, in particular to a data acquisition system and method based on the passive Internet of Things. A metering module, a vibration energy acquisition module, a storage module, an ultra-low power consumption BLE communication module and a radio frequency signal backscattering module are arranged in water gas equipment; therefore, independent power supply can be carried out on the water and gas equipment through the vibration energy acquisition module, a wireless communication channel with the terminal equipment can be established when a radio frequency signal from the terminal equipment is received, and a data message is generated through the water and gas consumption data pre-recorded in the storage module and the attribute information of the water and gas equipment, so that the water and gas equipment can be stored in the wireless communication channel. And the data message is sent to the terminal equipment through the established wireless communication channel, so that the data transmission quantity is increased, the data acquisition of the water and gas equipment is realized, and the technical problem of low data acquisition efficiency caused by power supply and limited data communication traffic in the data acquisition process of the water and gas meter in the prior art is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of Internet of Things, and in particular to a data acquisition system and method based on a passive Internet of Things. Background Art

[0002] With the development of the Internet of Things, the needs of multiple scenarios of passive Internet of Things have gradually become clear. These scenarios have a far higher number of nodes than the existing low-power Internet of Things technology can support, and the market space is broad. Existing smart water and gas meters are generally powered by built-in batteries, which need to be replaced frequently. During use, there is a high power consumption problem.

[0003] In addition, during the data collection process, existing water and gas meters cannot be connected to the network, and the cellular communication technology they use is limited in the amount of data they carry and cannot cope with more complex scenarios, especially when the built-in battery is out of power, and cannot meet users' data collection needs for water and gas meters.

[0004] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of the present invention is to provide a data acquisition system and method based on passive Internet of Things, aiming to solve the technical problem in the prior art that the data acquisition process of water and gas meters is limited by power supply and data communication volume, resulting in low data acquisition efficiency.

[0006] To achieve the above-mentioned object, the present invention provides a data acquisition system based on a passive Internet of Things, the data acquisition system based on the passive Internet of Things comprising: a water and gas device and a terminal device, the water and gas device and the terminal device are wirelessly connected, the water and gas device and the terminal device are wirelessly connected, the water and gas device at least comprises: a metering module, a vibration energy acquisition module, a storage module, an ultra-low power consumption BLE communication module and a radio frequency signal backscattering module;

[0007] The water and gas equipment is used to establish a wireless communication channel with the terminal equipment when receiving a radio frequency signal from the terminal equipment;

[0008] The water and gas device is further used to generate a data message according to the pre-recorded water and gas usage data and the attribute information of the water and gas device, and send the data message to the terminal device through the wireless communication channel;

[0009] The terminal device is used to forward the water and gas usage data and the attribute information to the operator server.

[0010] Optionally, the water and gas equipment at least includes: a metering module, a vibration energy collection module and a storage module;

[0011] The vibration energy collection module is used to convert the vibration energy during the operation of the water and gas equipment into electrical energy to provide electrical energy to the metering module;

[0012] The metering module is used to record the water and gas usage of the water and gas equipment and transfer the water and gas usage data to the storage module.

[0013] Optionally, the water and gas equipment further comprises: an ultra-low power consumption BLE communication module;

[0014] The ultra-low power consumption BLE communication module is used to establish a wireless communication channel with the terminal device;

[0015] A data message is generated according to the pre-recorded water and gas usage data and the attribute information of the water and gas equipment, and the data message is sent to the terminal device through the wireless communication channel until the wireless communication channel with the terminal device is closed.

[0016] Optionally, the water and gas equipment further comprises: a radio frequency signal backscattering module;

[0017] The radio frequency signal backscattering module is used to drive the ultra-low power consumption BLE communication module to establish a wireless communication channel with the terminal device based on the radio frequency signal when receiving the radio frequency signal from the terminal device.

[0018] Optionally, the radio frequency signal backscattering module is further used to perform signal modulation on the radio frequency signal when the radio frequency signal backscattering module receives the radio frequency signal from the terminal device;

[0019] The ultra-low power consumption BLE communication module is driven based on the modulated radio frequency signal to establish a communication connection with the terminal device.

[0020] Optionally, the ultra-low power consumption BLE communication module is further used to generate a data message from the water and gas usage data and the attribute information of the water and gas equipment according to a preset data message format, and the attribute information at least includes the location of the water and gas equipment and the household owner information.

[0021] Optionally, the terminal device is further configured to parse the data message upon receiving the data message to obtain water and gas usage data and attribute information;

[0022] Verifying the water and gas usage data and the attribute information;

[0023] After the verification is passed, checking whether the server is connected to the operator;

[0024] When the terminal device is connected to the operator server, the water and gas usage data and the attribute information are forwarded to the operator server.

[0025] Optionally, it is also used to store the water and gas usage data and the attribute information in a local non-volatile memory when the verification fails.

[0026] Optionally, the water and gas equipment is also used to perform fault self-checking when a fault occurs;

[0027] Determine the fault code based on the fault self-test results;

[0028] The fault code and the household information and location information of the water and gas equipment are sent to the terminal device to provide auxiliary information for fault repair.

[0029] In addition, to achieve the above-mentioned purpose, the present invention also proposes a data acquisition method based on a passive Internet of Things, and the data acquisition method based on a passive Internet of Things is applied to the data acquisition system based on a passive Internet of Things as described above;

[0030] The data collection method based on passive Internet of Things includes:

[0031] When the water and gas equipment receives the radio frequency signal from the terminal equipment, the water and gas equipment establishes a wireless communication channel with the terminal equipment;

[0032] The water and gas device generates a data message according to the pre-recorded water and gas usage data and the attribute information of the water and gas device, and sends the data message to the terminal device through the wireless communication channel;

[0033] The terminal device forwards the water and gas usage data and the attribute information to the operator server.

[0034] One or more technical solutions proposed in the present invention have at least the following technical effects: the present invention sets a metering module, a vibration energy collection module, a storage module, an ultra-low power consumption BLE communication module and a radio frequency signal backscattering module in the water and gas equipment, so that the water and gas equipment can be independently powered by the vibration energy collection module, and when the radio frequency signal from the terminal device is received, a wireless communication channel with the terminal device can be established, and a data message is generated by the water and gas usage data pre-recorded in the storage module and the attribute information of the water and gas equipment, and the data message is sent to the terminal device through the established wireless communication channel, thereby increasing the data transmission rate and realizing data collection of the water and gas equipment, avoiding the technical problem that the data collection process of the water and gas meter in the prior art is limited by power supply and data communication volume, resulting in low data collection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0037] Figure 1 A schematic diagram of the system architecture of a first embodiment of a data acquisition system based on a passive Internet of Things according to the present invention;

[0038] Figure 2 A schematic diagram of the data format of an embodiment of a data acquisition system based on a passive Internet of Things according to the present invention;

[0039] Figure 3 It is another data format schematic diagram of an embodiment of the data acquisition system based on passive Internet of Things of the present invention;

[0040] Figure 4 It is a schematic diagram of the implementation process of an embodiment of a data acquisition system based on a passive Internet of Things of the present invention;

[0041] Figure 5 This is a flow chart of the first embodiment of the data collection method based on passive Internet of Things of the present invention.

[0042] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0044] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0045] Based on this, the embodiment of the present invention provides a data acquisition system based on a passive Internet of Things, referring to Figure 1 , Figure 1 The present invention is a flow chart of a first embodiment of a data acquisition system based on a passive Internet of Things.

[0046] In this embodiment, the data acquisition system based on the passive Internet of Things includes: water and gas equipment and terminal equipment, the water and gas equipment and the terminal equipment are wirelessly connected, and the water and gas equipment at least includes: a metering module, a vibration energy acquisition module, a storage module, an ultra-low power consumption BLE communication module and a radio frequency signal backscattering module;

[0047] The water and gas equipment is used to establish a wireless communication channel with the terminal equipment when receiving a radio frequency signal from the terminal equipment;

[0048] The water and gas device is further used to generate a data message according to the pre-recorded water and gas usage data and the attribute information of the water and gas device, and send the data message to the terminal device through the wireless communication channel;

[0049] The terminal device is used to forward the water and gas usage data and the attribute information to the operator server.

[0050] It should be noted that a passive system refers to a system that does not rely on an external energy source. This means that a passive system does not require an external power supply to provide electrical energy, but instead uses the components and energy conversion mechanisms within the system to complete power conversion and signal processing. The characteristics of a passive system are that it does not generate or consume energy, and the total energy of the entire system remains unchanged. In a passive system, the rate at which the outside world supplies energy must not be less than the rate at which the system itself stores it, that is, the system's external performance is that it can only store or consume energy, but cannot generate energy.

[0051] In this embodiment, since a vibration energy harvesting module is provided in the water and gas equipment, when the external environment generates vibrations, the mechanical structure (such as mass blocks, springs, etc.) inside the vibration energy harvesting module will vibrate accordingly, and then convert the mechanical energy into electrical energy through electromagnetic induction, piezoelectric effect or electrostatic effect, so as to power each module in the water and gas equipment. Since the ultra-low power consumption BLE communication will only be driven to work when the radio frequency signal of the terminal device on the user side is received, the power consumption of the entire water and gas equipment can be covered by the electric energy generated by the vibration energy harvesting module, thereby constructing a passive power consumption system.

[0052] In addition, the metering module can drive the internal mechanical structure to move through the flow of water and gas inside the water and gas equipment, thereby driving the counting mechanism to record the water and gas usage. Through the electric energy provided by the vibration energy collection module, the metering module continuously writes the metering data into the storage module for storage; the storage module is mainly used to access data to protect the security and integrity of the data; the types of storage modules used in this embodiment are: RAM, ROM, EEPROM and other non-volatile memories, so that data can be retained after power failure.

[0053] The RF signal backscatter module refers to a device or module that can use backscatter modulation technology to modulate and reflect the incident RF signal by changing the antenna impedance. There is no need to generate a response signal, which reduces the power consumption and complexity of the device.

[0054] The ultra-low power BLE communication module means that the energy obtained from the environment can drive the data transmission and wireless communication of the sensing node. The new wireless communication technology reduces the communication energy consumption to tens of microwatts or even less than ten microwatts.

[0055] Furthermore, the vibration energy collection module is used to convert the vibration energy during the operation of the water and gas equipment into electrical energy to provide electrical energy to the metering module;

[0056] The metering module is used to record the water and gas usage of the water and gas equipment and transfer the water and gas usage data to the storage module.

[0057] The water and gas meter drives the internal mechanical structure to move through the flow of water and gas, thereby driving the counting mechanism of the metering module to record the water and gas usage. Through the electric energy provided by the vibration energy collection module, the metering module continuously writes the metering data into the storage module for storage, so that the subsequent data can be reported to the terminal device.

[0058] Furthermore, the ultra-low power consumption BLE communication module is used to establish a wireless communication channel with the terminal device;

[0059] A data message is generated according to the pre-recorded water and gas usage data and the attribute information of the water and gas equipment, and the data message is sent to the terminal device through the wireless communication channel until the wireless communication channel with the terminal device is closed.

[0060] It should be understood that the integrity and accuracy of the data can be guaranteed by packaging the data message, ensuring the smooth communication. Figure 2 and Figure 3 , Figure 2 and Figure 3 It is the specific format of the data message in this embodiment, wherein the preamble is a fixed value used for synchronization and AGC training; the access address is a fixed value (such as the broadcast packet uses 0x8E89BED6), or a dynamically assigned value (such as the data packet after connection); the header contains the data packet type and length information, the type field can use several bits to represent different packet types, and the length field indicates the length of the data part; the data contains different data contents according to the packet type and application requirements; the check code is a CRC check for the entire data packet to ensure the reliability of data transmission.

[0061] Furthermore, the ultra-low power consumption BLE communication module is also used to generate a data message from the water and gas usage data and the attribute information of the water and gas equipment according to a preset data message format, and the attribute information at least includes the location of the water and gas equipment and the household owner information.

[0062] In this embodiment, the data message carries the location information and householder information of the water and gas equipment, which can be used to prevent leakage or tampering during data transmission. At the same time, when the water and gas equipment fails, it can be accurately located to reduce losses.

[0063] Furthermore, the RF signal backscattering module is used to drive the ultra-low power consumption BLE communication module to establish a wireless communication channel with the terminal device based on the RF signal when receiving the RF signal from the terminal device.

[0064] In the specific implementation, when the householder's mobile phone, computer or other terminal devices are close, the terminal device on the user side will emit a radio frequency signal. After the radio frequency signal backscattering module receives the radio frequency signal from the terminal devices such as mobile phones or computers, it drives the ultra-low power consumption BLE communication module to work and establish communication with the user's terminal device, so as to facilitate the subsequent transmission of the data stored in the metering device to the terminal device. Until the terminal device moves away or actively disconnects the communication connection, the data communication is stopped.

[0065] Furthermore, the radio frequency signal backscattering module is further used to perform signal modulation on the radio frequency signal when the radio frequency signal backscattering module receives the radio frequency signal from the terminal device;

[0066] The ultra-low power consumption BLE communication module is driven based on the modulated radio frequency signal to establish a communication connection with the terminal device.

[0067] It is understandable that in order to ensure the information security of water and gas equipment, not any terminal device that sends out a radio frequency signal can establish a communication connection. When the radio frequency signal backscattering module receives the radio frequency signal from terminal devices such as mobile phones or computers, it modulates the received radio frequency signal to determine whether the source of the terminal device is an authorized device. It can also detect the radio frequency signal strength of the received radio frequency signal. When the radio frequency signal strength is greater than a certain threshold or meets a certain signal strength range, it drives the ultra-low power consumption BLE communication module to establish a communication connection between the water and gas equipment and the terminal device.

[0068] Furthermore, the terminal device is also used to parse the data message when receiving the data message to obtain water and gas consumption data and attribute information;

[0069] Verifying the water and gas usage data and the attribute information;

[0070] After the verification is passed, checking whether the server is connected to the operator;

[0071] When the terminal device is connected to the operator server, the water and gas usage data and the attribute information are forwarded to the operator server.

[0072] Furthermore, the terminal device is also used to store the water and gas usage data and the attribute information in a local non-volatile memory when the verification fails.

[0073] It is worth mentioning that the reference Figure 4 , Figure 4 This is a flow chart of data collection in this embodiment, wherein the terminal device on the user side receives and verifies whether the water and gas usage data and the attribute information meet the requirements, for example: detecting whether the water and gas usage data is reasonable. The specific detection process can be judged based on the water and gas usage in the historical period.

[0074] The collected metering data, the location of the collected data, the householder number and other information are stored locally, and at the same time, it is detected whether the server of the operating service provider is connected. If it is disconnected, the data is temporarily stored locally. If the terminal device is connected to the server of the operating service provider, the metering data, location, and householder number information of the water and gas meters can be output to the server for backup. In this process, there is no need for special personnel to visit the site for verification, and the power consumption of water and gas equipment is reduced. There is no possibility of data interaction due to power outages or network disconnections, which improves the stability of the data collection process.

[0075] Furthermore, the water and gas equipment is also used to perform fault self-detection when a fault occurs;

[0076] Determine the fault code based on the fault self-test results;

[0077] The fault code and the household information and location information of the water and gas equipment are sent to the terminal device to provide auxiliary information for fault repair.

[0078] It is understandable that when a water or gas equipment fails, a string of fault codes will be automatically generated according to the cause of the failure, and the fault code will be transmitted to the operator's server through a major rolling device, along with the household owner's information and location information, etc., which can help staff quickly locate and repair the fault, reduce losses caused by equipment failure, and improve user experience.

[0079] In this embodiment, the vibration energy collection module collects energy during the transportation of water and gas equipment to build a passive system. The metering module continuously writes the water and gas usage data into the storage module. When the terminal equipment and other devices on the user side are close, the low-power communication chip obtains the mobile phone radio frequency energy from the environment to drive the perception node data transmission and wireless communication. Based on the ultra-low power BLE, communication is established with the terminal equipment and the metering data is transmitted to the terminal equipment. The metering information, household owner information, equipment location information, etc. collected by the water and gas meter are uploaded to the operation service cloud platform through the terminal equipment and APP to realize data collection.

[0080] Based on this, the embodiment of the present invention provides a data collection method based on a passive Internet of Things, referring to Figure 5 , Figure 5 The present invention is a flowchart of a first embodiment of a data collection method based on a passive Internet of Things.

[0081] In this embodiment, the data collection method based on the passive Internet of Things includes:

[0082] Step S10: When receiving the radio frequency signal from the terminal device, the water and gas device establishes a wireless communication channel with the terminal device.

[0083] Step S20: the water and gas device generates a data message according to the pre-recorded water and gas usage data and the attribute information of the water and gas device, and sends the data message to the terminal device through the wireless communication channel.

[0084] Step S30: The terminal device forwards the water and gas usage data and the attribute information to the operator server.

[0085] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, data collection based on passive Internet of Things, etc. The following takes data collection based on passive Internet of Things as an example to illustrate this embodiment and the following embodiments.

[0086] It should be noted that a passive system refers to a system that does not rely on an external energy source. This means that a passive system does not require an external power supply to provide electrical energy, but instead uses the components and energy conversion mechanisms within the system to complete power conversion and signal processing. The characteristics of a passive system are that it does not generate or consume energy, and the total energy of the entire system remains unchanged. In a passive system, the rate at which the outside world supplies energy must not be less than the rate at which the system itself stores it, that is, the system's external performance is that it can only store or consume energy, but cannot generate energy.

[0087] In this embodiment, since a vibration energy harvesting module is provided in the water and gas equipment, when the external environment generates vibrations, the mechanical structure (such as mass blocks, springs, etc.) inside the vibration energy harvesting module will vibrate accordingly, and then convert the mechanical energy into electrical energy through electromagnetic induction, piezoelectric effect or electrostatic effect, so as to power each module in the water and gas equipment. Since the ultra-low power consumption BLE communication will only be driven to work when the radio frequency signal of the terminal device on the user side is received, the power consumption of the entire water and gas equipment can be covered by the electric energy generated by the vibration energy harvesting module, thereby constructing a passive power consumption system.

[0088] In addition, the metering module can drive the internal mechanical structure to move through the flow of water and gas inside the water and gas equipment, thereby driving the counting mechanism to record the water and gas usage. Through the electric energy provided by the vibration energy collection module, the metering module continuously writes the metering data into the storage module for storage; the storage module is mainly used to access data to protect the security and integrity of the data; the types of storage modules used in this embodiment are: RAM, ROM, EEPROM and other non-volatile memories, so that data can be retained after power failure.

[0089] The RF signal backscatter module refers to a device or module that can use backscatter modulation technology to modulate and reflect the incident RF signal by changing the antenna impedance. There is no need to generate a response signal, which reduces the power consumption and complexity of the device.

[0090] The ultra-low power BLE communication module means that the energy obtained from the environment can drive the data transmission and wireless communication of the sensing node. The new wireless communication technology reduces the communication energy consumption to tens of microwatts or even less than ten microwatts.

[0091] In this embodiment, a metering module, a vibration energy collection module, a storage module, an ultra-low power consumption BLE communication module and a radio frequency signal backscattering module are arranged in the water and gas equipment, so that the water and gas equipment can be independently powered by the vibration energy collection module, and a wireless communication channel with the terminal device can be established when the radio frequency signal from the terminal device is received. A data message is generated by using the water and gas usage data pre-recorded in the storage module and the attribute information of the water and gas equipment, and the data message is sent to the terminal device through the established wireless communication channel, thereby increasing the data transmission volume and realizing data collection of the water and gas equipment, thereby avoiding the technical problem in the prior art that the data collection process of the water and gas meter is limited by the power supply and data communication volume, resulting in low data collection efficiency.

[0092] The present application provides a computer-readable storage medium having computer-readable program instructions (i.e., computer programs) stored thereon, and the computer-readable program instructions are used to execute the data collection method based on the passive Internet of Things in the above-mentioned embodiment.

[0093] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0094] The above-mentioned computer-readable storage medium may be included in the data acquisition device based on the passive Internet of Things; or it may exist independently without being assembled into the data acquisition device based on the passive Internet of Things.

[0095] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by the data acquisition device based on the passive Internet of Things, the data acquisition device based on the passive Internet of Things can perform data acquisition based on the passive Internet of Things.

[0096] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0097] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0098] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of a module does not, in some cases, constitute a limitation on the module itself.

[0099] The readable storage medium provided in the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned data collection method based on the passive Internet of Things, and can solve the technical problems of data collection based on the passive Internet of Things. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in the present application are the same as the beneficial effects of the data collection method based on the passive Internet of Things provided in the above-mentioned embodiment, and will not be repeated here.

[0100] The present application also provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the above-mentioned data collection method based on passive Internet of Things.

[0101] The computer program product provided by the present application can solve the technical problem of data collection based on passive Internet of Things. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as the beneficial effects of the data collection method based on passive Internet of Things provided by the above embodiment, which will not be repeated here.

[0102] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A data acquisition system based on passive Internet of Things, characterized in that: The data acquisition system based on the passive Internet of Things includes: water and gas equipment and terminal equipment, the water and gas equipment and the terminal equipment are wirelessly connected, and the water and gas equipment at least includes: a metering module, a vibration energy acquisition module, a storage module, an ultra-low power consumption BLE communication module and a radio frequency signal backscattering module; The water and gas equipment is used to establish a wireless communication channel with the terminal equipment when receiving a radio frequency signal from the terminal equipment; The water and gas device is further used to send the water and gas usage data and the attribute information of the water and gas device stored in the storage module to the terminal device through the wireless communication channel; The terminal device is used to forward the water and gas usage data and the attribute information to the operator server.

2. The system according to claim 1, characterized in that The vibration energy collection module is used to convert the vibration energy during the operation of the water and gas equipment into electrical energy to provide electrical energy to the metering module; The metering module is used to record the water and gas usage of the water and gas equipment and transfer the water and gas usage data to the storage module.

3. The system according to claim 2, characterized in that The ultra-low power consumption BLE communication module is used to establish a wireless communication channel with the terminal device; A data message is generated according to the pre-recorded water and gas usage data and the attribute information of the water and gas equipment, and the data message is sent to the terminal device through the wireless communication channel until the wireless communication channel with the terminal device is closed.

4. The system according to claim 3, characterized in that The ultra-low power consumption BLE communication module is also used to generate a data message from the water and gas usage data and the attribute information of the water and gas equipment according to a preset data message format, and the attribute information at least includes the location of the water and gas equipment and the household owner information.

5. The system according to claim 4, characterized in that The radio frequency signal backscattering module is used to drive the ultra-low power consumption BLE communication module to establish a wireless communication channel with the terminal device based on the radio frequency signal when receiving the radio frequency signal from the terminal device.

6. The system according to claim 5, characterized in that The radio frequency signal backscattering module is further used to perform signal modulation on the radio frequency signal when the radio frequency signal backscattering module receives the radio frequency signal from the terminal device; The ultra-low power consumption BLE communication module is driven based on the modulated radio frequency signal to establish a communication connection with the terminal device.

7. The system according to claim 1, characterized in that The terminal device is further configured to parse the data message upon receiving the data message to obtain water and gas usage data and attribute information; Verifying the water and gas usage data and the attribute information; After the verification is passed, checking whether the server is connected to the operator; When the terminal device is connected to the operator server, the water and gas usage data and the attribute information are forwarded to the operator server.

8. The system according to claim 7, characterized in that The terminal device is also used to store the water and gas usage data and the attribute information in a local non-volatile memory when the verification fails.

9. The system according to claim 8, characterized in that The water and gas equipment is also used to perform fault self-detection when a fault occurs; Determine the fault code based on the fault self-test results; The fault code and the household information and location information of the water and gas equipment are sent to the terminal device to provide auxiliary information for fault repair.

10. A data collection method based on passive Internet of Things, characterized in that: The data acquisition method based on the passive Internet of Things is applied to the data acquisition system based on the passive Internet of Things as described in any one of claims 1 to 9 above; The data collection method based on passive Internet of Things includes: When the water and gas equipment receives the radio frequency signal from the terminal equipment, it establishes a wireless communication channel with the terminal equipment; The water and gas device sends the water and gas usage data and the attribute information of the water and gas device stored in the storage module to the terminal device through the wireless communication channel; The terminal device forwards the water and gas usage data and the attribute information to the operator server.

Images