CN110880029A - Passive ultrasonic sensor tag, tag system and detection method - Google Patents
Passive ultrasonic sensor tag, tag system and detection method Download PDFInfo
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Abstract
The invention discloses a passive ultrasonic sensor label, a label system and a detection method, wherein a transduction module in the passive ultrasonic sensor label can convert a received first ultrasonic signal into electric energy and a first electric signal and then transmit the electric energy and the first electric signal to a processing module, the processing module identifies identification information of a sensor to be activated carried in the first electric signal and controls the sensor corresponding to the identification information to be electrified, and the sensor is electrified to acquire data information, so that the passive ultrasonic sensor label can carry out environment detection in an environment without electromagnetic shielding or light reaching and acquire data information; and the data information collected by the sensor is forwarded to the energy conversion module by the processing module, and the energy conversion module sends a corresponding second ultrasonic signal according to the received data information, so that the data information is transmitted, the sensor label system can conveniently and efficiently read the detection data, and the application range of the sensor label testing system is widened.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a passive ultrasonic sensor tag, a tag system and a detection method.
Background
Most of the sensor tags on the market today are active tags. Because the built-in power supply or the device needing permanent power supply in the sensor tag has limited tolerance to the environment, the detection equipment needs to be maintained frequently in the use process of the sensor tag, and a plurality of limitations and inconveniences exist, such as short service life, low safety and poor adaptability.
In addition, most of the commonly used sensor tag testing systems use light or electromagnetic waves as media to transmit detection data, and place the sensor tag on the surface of an object to be tested which can be reached by the electromagnetic waves or light or in the internal shallow region thereof for effective identification. However, the sensor tag testing system has a great disadvantage that the sensor tag system cannot perform environmental detection, acquire and read detection data and is limited in application range in an environment where electromagnetic shielding or light cannot reach.
Disclosure of Invention
The embodiment of the invention provides a passive ultrasonic sensor tag, a tag system and a detection method, which are used for solving the problems that the application range of a sensor tag test system in the prior art is limited, and a plurality of limitations and inconveniences exist in the application process of the sensor tag test system.
The embodiment of the invention provides a passive ultrasonic sensor tag, which comprises: a transduction module, a processing module and at least one sensor;
the energy conversion module is connected with the processing module and used for converting the received first ultrasonic signal into electric energy and a first electric signal;
the processing module is connected with each sensor and used for storing the electric energy, identifying the identification information of the sensor to be activated carried in the first electric signal and controlling the sensor corresponding to the identification information to be powered on;
the sensor is used for acquiring data information after power-on and sending the acquired data information to the processing module;
the processing module is further used for forwarding the data information sent by the sensor to the energy conversion module;
and the energy conversion module is also used for sending a corresponding second ultrasonic signal according to the received data information.
Further, the transduction module includes: the device comprises a transduction unit and a modulation and demodulation unit;
the energy conversion unit is used for converting the received first ultrasonic signal into electric energy;
the modulation and demodulation unit is used for modulating and converting the received first ultrasonic signal into a first electric signal.
Further, the processing module is specifically configured to perform preprocessing on the first electrical signal to obtain a second electrical signal that can be read, and identify identification information of a sensor to be activated, which is carried in the second electrical signal.
Further, the processing module is further configured to generate response data corresponding to the control instruction when it is recognized that the second electrical signal carries the control instruction, and send the response data to the transduction module;
and the energy conversion module is also used for sending a corresponding third ultrasonic signal according to the received response data.
Further, the processing module comprises an energy storage unit, a processing unit and a switch unit, wherein the number of the switch units is the same as the number of the sensors contained in the passive ultrasonic sensor tag;
the energy storage unit is used for storing the electric energy;
each switch unit is connected with the energy storage unit, the processing unit and each corresponding sensor;
and the processing unit is used for controlling the switch unit connected with the sensor with the identification information to be closed according to the identified identification information of the sensor to be activated, so that the energy storage unit powers on the sensor with the identification information through the closed switch unit.
Further, the passive ultrasonic sensor tag further comprises a fixing module;
and the fixing module is used for fixing the energy conversion module, the processing module and each sensor.
Further, the fixing module is a support bracket or a support box.
The embodiment of the invention provides a label system of a passive ultrasonic sensor label, which comprises the passive ultrasonic sensor label and an ultrasonic reader-writer used for sending a first ultrasonic signal to the passive ultrasonic sensor label and receiving a second ultrasonic signal sent by the passive ultrasonic sensor label.
Furthermore, the transduction module in the passive ultrasonic sensor tag is in contact with the inner surface of the object to be measured;
the ultrasonic reader-writer is positioned outside the measured object, and the distance between the ultrasonic reader-writer and the position of the energy conversion module is smaller than a set distance threshold value.
The embodiment of the invention provides a detection method, which is applied to a passive ultrasonic sensor label and comprises the following steps:
identifying identification information of a sensor to be activated carried in a first electric signal, wherein the first electric signal is obtained by converting a first ultrasonic signal sent by an ultrasonic reader-writer;
providing the stored electric energy to a sensor corresponding to the identification information, wherein the electric energy is obtained by converting the first ultrasonic signal;
and receiving data information acquired by the electrified sensor so as to send a second ultrasonic signal corresponding to the data information.
Further, the identifying information for identifying the sensor to be activated carried in the first electrical signal includes:
and preprocessing the first electric signal to obtain a second electric signal which can be read, and identifying the identification information of the sensor to be activated carried in the second electric signal.
Further, the method further comprises:
when the second electric signal is identified to carry a control instruction, generating response data corresponding to the control instruction; so that a third ultrasonic signal corresponding to the response data is transmitted.
The energy conversion module in the passive ultrasonic sensor tag can convert a received first ultrasonic signal into electric energy and a first electric signal and then transmit the electric energy and the first electric signal to the processing module, the processing module identifies identification information of a sensor to be activated carried in the first electric signal and controls the sensor corresponding to the identification information to be electrified, and data information is acquired after the sensor is electrified, so that the passive ultrasonic sensor tag can carry out environment detection in an electromagnetic shielding environment or an environment where light cannot reach and acquire data information; and the data information collected by the sensor is forwarded to the energy conversion module by the processing module, and the energy conversion module sends a corresponding second ultrasonic signal according to the received data information, so that the data information is transmitted, the sensor label system can conveniently and efficiently read the detection data, and the application range of the sensor label testing system is widened. In addition, the processing module can store electric energy to drive the sensor and the sensor to work, so that a built-in power supply or a device needing permanent power supply is not needed, and the problems of limitation and inconvenience in the use process of the sensor label caused by the use of the built-in power supply or the device needing permanent power supply are solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a structural diagram of the passive ultrasonic sensor tag provided in embodiment 1 of the present invention;
fig. 2 is a structural diagram of the passive ultrasonic sensor tag provided in embodiment 2 of the present invention;
fig. 3 is a structural diagram of the passive ultrasonic sensor tag provided in embodiment 5 of the present invention;
fig. 4 is a structural diagram of the tag system based on the passive ultrasonic sensor tag according to embodiment 7 of the present invention;
fig. 5 is a flowchart of a method for detecting by using the tag system according to embodiment 8 of the present invention.
Detailed Description
In order to widen the application range of the sensor tag testing system and reduce the limitations and inconveniences during the use process, the embodiment of the invention provides a passive ultrasonic sensor tag, a tag system and a detection method, and the following description is made in conjunction with the drawings of the specification for the preferred embodiment of the invention, it should be understood that the preferred embodiment described herein is only used for explaining and explaining the invention, and is not used for limiting the invention. And the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
In the following embodiments of the present invention, the ultrasonic wave is a sound wave with a frequency higher than 20000 hz, which has good directivity and strong penetrating power, is easy to obtain more concentrated sound energy, can penetrate solid, liquid and gas, and can still efficiently propagate in an electromagnetic shielding or light-inaccessible environment. Thus, ultrasound can communicate as a data transmission medium or carrier.
Example 1:
fig. 1 is a structural diagram of a passive ultrasonic sensor tag according to an embodiment of the present invention. As shown in fig. 1, the passive ultrasonic sensor tag includes: a transduction module 1, a processing module 2 and at least one sensor 3;
the energy conversion module 1 is connected with the processing module 2 and is used for converting the received first ultrasonic signal into electric energy and a first electric signal;
the processing module 2 is connected with each sensor 3, and is used for storing the electric energy, identifying the identification information of the sensor 3 to be activated carried in the first electric signal, and controlling the sensor 3 corresponding to the identification information to be powered on;
the sensor 3 is used for collecting data information after being electrified and sending the collected data information to the processing module 2;
the processing module 2 is further configured to forward data information sent by the sensor 3 to the transduction module 1;
the energy conversion module 1 is further configured to send a corresponding second ultrasonic signal according to the received data information.
The transduction module 1 in the passive ultrasonic sensor tag provided in the embodiment of the present invention may receive a first ultrasonic signal, where the received first ultrasonic signal may be sent by an ultrasonic signal processing device, and the ultrasonic signal processing device is not limited as long as it can implement a sending function of ultrasonic waves, and specifically, the ultrasonic signal processing device may be an ultrasonic reader/writer. In the embodiment of the present invention, the first ultrasonic signal is transmitted by an ultrasonic reader/writer.
After receiving the first ultrasonic signal, the transducer module 1 modulates and demodulates the first ultrasonic signal into a first electrical signal, for example, the first ultrasonic signal may be converted into the first electrical signal by an ultrasonic transducer, such as an electrostatic ultrasonic transducer or a piezoelectric ultrasonic transducer, or the first ultrasonic signal may be converted into the first electrical signal by an ultrasonic conversion circuit. The energy conversion module 1 can also convert the first ultrasonic signal into electric energy after receiving the first ultrasonic signal, and can convert the first ultrasonic signal into electric energy through an ultrasonic transducer such as an electrostatic ultrasonic transducer and a piezoelectric ultrasonic transducer, and also can convert the first ultrasonic signal into electric energy through an ultrasonic electric energy conversion circuit. This power supplies the processing module 2 and each sensor 3 with power.
The first electrical signal may carry identification information of the sensor to be activated, and because the transduction module 1 is connected to the processing module 2, the processing module 2 may receive the first electrical signal and activate the sensor to be activated according to the identification information of the sensor to be activated carried in the first electrical signal.
The passive ultrasonic sensor tag comprises at least one sensor 3, the position of each sensor and which data information can be acquired are known in advance, so that the identification information of the sensor to be activated can be flexibly carried in the first ultrasonic signal according to needs, for example, if the ambient temperature of the object to be detected is to be detected, a temperature sensor is selected, if the ambient humidity of the object to be detected is to be detected, a humidity sensor is selected, and if the material state, hardness and thickness of the object to be detected are to be detected, a corresponding sensor for detecting the material state, hardness and thickness is selected.
In the embodiment of the present invention, the number and performance index of the sensors 3 are not limited. Preferably, in order to reduce power consumption, a sensor with low power consumption may be selected.
The sensor 3 collects data information after being powered on and sends the collected data information to the processing module 2 through a third electric signal.
The processing module 2 may forward the received third electrical signal directly to the transducer module 1, or may forward the third electrical signal to the transducer module 1 through other processes, such as recognizing and resolving the third electrical signal into a fourth electrical signal that can be read. In order to increase the transmission rate of the data information, the processing module 2 preferably forwards the received third electrical signal directly to the transducer module 1 according to the embodiment of the present invention.
The energy conversion module 1 receives the third electrical signal forwarded by the processing module 2 or the electrical signal obtained by the processing module 2 through other processing, and may change the intensity of the second ultrasonic signal to send out the data information detected by the sensor 3 through a corresponding method, such as a backscattering ultrasonic technology, according to the electrical signal or the third electrical signal, or may modulate and demodulate the electrical signal or the third electrical signal to the second ultrasonic signal to send out the data information detected by the sensor 3. In order to improve the transmission efficiency of the data information, in the embodiment of the present invention, the transducer module 1 preferably modulates and demodulates the third electrical signal forwarded by the processing module 2 to the second ultrasonic signal, so as to send the data information detected by the sensor 3.
The processing module 2 stores the received electric energy, and the stored electric energy can provide a power supply required by the processing module 2 when the processing module works, and can also supply power to the corresponding sensor 3 to activate the sensor 3 to work and provide electric energy for the work of the sensor 3. In order to improve the utilization rate of the electric energy, the embodiment of the present invention preferably uses the stored electric energy not only to supply the electric energy for the processing module 2 to work, but also to activate the sensor 3 and supply the electric energy for the sensor 3 to work.
The processing module 2 can select a low-power consumption process control and communication processing chip, or select other control processing chips such as a single chip microcomputer, or a control circuit.
The identification information of the sensor may be a code of the sensor to be activated, or other information uniquely identifying the sensor.
According to the passive ultrasonic sensor tag provided by the embodiment of the invention, at least one sensor 3 is utilized to carry out environment detection and data information acquisition, and ultrasonic signals are utilized to send out corresponding detection data information, so that the passive ultrasonic sensor tag can efficiently transmit the data information of environment detection in an environment without electromagnetic shielding or light reaching, and the application range of a sensor tag testing system is widened.
Meanwhile, the passive ultrasonic sensor tag provided by the embodiment of the invention converts the energy carried in the ultrasonic signal into the electric energy required by the passive ultrasonic sensor tag to work, so that any built-in power supply or a device needing permanent power supply is not required for supplying energy, the potential safety hazards of detonation, liquid leakage and chemical pollution of the traditional energy storage element in a sensor tag testing system caused by the use of the built-in power supply or the device needing permanent power supply are eliminated, and a plurality of limitations and inconvenience in the use process are also solved.
Example 2:
in order to convert the first ultrasonic signal into the electric energy and the first electric signal, on the basis of the above embodiment, fig. 2 is a structural diagram of the passive ultrasonic sensor tag provided in embodiment 2 of the present invention. As shown in fig. 2, based on the passive ultrasonic sensor tag structure described in embodiment 1, the transducer module 1 includes: a transduction unit 11 and a modem unit 12.
The energy conversion unit 11 is configured to convert the received first ultrasonic signal into electric energy;
the modem unit 12 is configured to modulate and convert the received first ultrasonic signal into a first electrical signal.
Specifically, the transducer unit 11 is connected to the processing module 2, and the modem unit 12 is connected to the processing module 2.
The transducer unit 11 may be a circuit for converting ultrasonic waves into electric energy, or may be a transducer such as a piezoelectric ultrasonic transducer. In order to avoid the complexity of the circuit design, in the embodiment of the present invention, the transducer unit 11 employs an ultrasonic transducer.
The first ultrasonic signal can be directly converted into electric energy by the transducer unit 11 and transmitted to the processing module 2; it may also be converted into electrical energy by other devices, such as ultrasonic transducers, or electrical circuits, such as transducer circuits, and sent to the processing module 2.
The modem unit 12 may be a device capable of modulating and demodulating the ultrasonic wave, or may be a circuit for modulating and demodulating the ultrasonic wave. In order to make the transducer unit 11 and the modem unit 12 work better in coordination, the modem unit 12 in the embodiment of the present invention employs a circuit for performing modem on the ultrasonic wave.
The modem unit 12 may directly modulate and convert the received first ultrasonic signal into the first electrical signal, and a process of modulating the ultrasonic signal into the electrical signal belongs to the prior art, and details of the process are not described in this embodiment of the present invention.
When transmitting the data information collected by the sensor 3, the modem unit 12 modulates and converts the received data information forwarded by the processing module 2 into a second ultrasonic signal.
The modem unit 12 may also modulate other information, such as response data, delivered by the processing module 2 into an ultrasonic signal distinct from the second ultrasonic signal.
Based on the structure of the passive ultrasonic sensor tag shown in fig. 2, the working principle is as follows:
the energy conversion unit 11 converts the received first ultrasonic signal into electric energy, and sends the electric energy to the processing module 2 to supply power to the processing module; the first ultrasonic signal is ultrasonic waves for transmitting control information and energy to the passive ultrasonic sensor by the ultrasonic reader-writer;
the modem unit 12 modulates and converts the received first ultrasonic signal into a first electrical signal, and transmits the first electrical signal to the processing module 2.
When the data information collected by the sensor 3 is transmitted, the modem unit 12 modulates and converts the received data information forwarded by the processing module 2 into a corresponding second ultrasonic signal.
Or the modem unit 12 modulates and converts other information such as response data delivered from the processing module 2 into an ultrasonic signal different from the second ultrasonic signal.
In the passive ultrasonic sensor tag provided by the embodiment of the invention, the energy conversion unit 11 converts the first ultrasonic signal into electric energy to supply power to the processing module 2; the modem unit 12 converts the first ultrasonic signal into a first electrical signal and transfers it to the processing module 2. The structural design enables the passive ultrasonic sensor label to efficiently transmit the requirement of environment detection in the environment which can not be electromagnetically shielded or can not be reached by light, thereby solving the problem that the common sensor label testing system in the prior art can not carry out environment detection in the environment which can not be electromagnetically shielded or can not be reached by light, and widening the application range of the sensor label testing system.
In addition, the transducer unit 11 provided in the embodiment of the present invention converts ultrasonic energy into electrical energy, and supplies power to the processing module 2, so that the processing module can continuously and efficiently operate, thereby solving many limitations and inconveniences existing in the use process of the conventional sensor tag testing system.
Example 3:
in order to obtain more accurate identification information of a sensor to be activated, based on the above structure diagram of the passive ultrasonic sensor tag provided in the embodiments of the present invention, on the basis of the above embodiments, in the passive ultrasonic sensor tag provided in the embodiments of the present invention, the processing module 2 is further configured to preprocess the first electrical signal to obtain a second electrical signal that can be read, and identify the identification information of the sensor to be activated carried in the second electrical signal.
The processing module 2 performs preprocessing on the received first electrical signal, where the preprocessing may be error correction and integration processing, or other processing such as identification, judgment, analysis and integration, so as to obtain a readable second electrical signal. In order to more accurately and quickly activate the sensor which needs to perform the detection work, in the embodiment of the present invention, the processing module 2 performs error correction and integration processing on the received first electrical signal, so as to obtain a second electrical signal which can be read.
The second electrical signal may carry identification information of the sensor to be activated, or may carry other information such as a control command, an identification signal, and the like.
The processing module 2 identifies the identification information of the sensor to be activated carried in the second electrical signal, the identification information of the sensor may be a serial number of the sensor, and the identification information of the sensor to be activated carried in the second electrical signal is obtained by parsing and identifying according to the identification information of the sensor to be activated carried in the second electrical signal. In order to obtain the identification information of the sensor to be activated carried in the second electrical signal more quickly, the embodiment of the invention directly analyzes and identifies the identification information of the sensor to be activated carried in the second electrical signal.
In the embodiment of the invention, the processing module 2 can more accurately and quickly obtain the identification information of the to-be-activated sensor carried in the first electric signal, so as to accurately activate the to-be-activated sensor 3.
Example 4:
in order to better utilize information carried by the second electrical signal, on the basis of the foregoing embodiments, in the passive ultrasonic sensor tag provided in the embodiment of the present invention, the processing module 2 is further configured to generate response data corresponding to the control instruction when it is recognized that the second electrical signal carries the control instruction, and send the response data to the transduction module 1;
the transducer module 1 is further configured to transmit a corresponding third ultrasonic signal according to the received response data.
The response data described above is not limited to the tag data, but may be other data such as control instruction data, identification instruction data.
The processing module 2 of the embodiment of the invention directly sends the response data to the energy conversion module 1. The response data received by the transducer module 1 may be modulated and converted into a third ultrasonic signal in a corresponding manner, for example, by a backscatter ultrasonic technique. In order to increase the transmission rate of the response data, the response data received by the transducer module 1 in the embodiment of the present invention is modulated and converted into the third ultrasonic signal by the backscatter ultrasonic technology.
The working principle among the modules in the embodiment of the invention is as follows:
in the embodiment of the invention, when recognizing that the second electrical signal carries the control instruction, the processing module 2 generates response data corresponding to the control instruction and sends the response data to the energy conversion module 1, and the energy conversion module 1 modulates and converts the received response data into a third ultrasonic signal through a backscattering ultrasonic technology and sends the third ultrasonic signal.
In the embodiment of the invention, when recognizing that the second electrical signal carries the control instruction, the processing module 2 generates response data corresponding to the control instruction and sends the response data to the energy conversion module 1, and the energy conversion module 1 modulates and converts the received response data into the third ultrasonic signal and sends the third ultrasonic signal. Therefore, the information carried by the second electric signal is more fully utilized, and the waste of resources in signal transmission is reduced.
Example 5:
on the basis of the foregoing embodiments, fig. 3 is a structure diagram of the passive ultrasonic sensor tag provided in an embodiment of the present invention, and the processing module 2 includes: an energy storage unit 22, a processing unit 21 and a switch unit 23, wherein the number of the switch units 23 is the same as the number of the sensors 3 included in the passive ultrasonic sensor tag;
the energy storage unit 22 is used for storing the electric energy;
each switch unit 23 is connected with the energy storage unit 22, the processing unit 21 and each corresponding sensor 3;
the processing unit 21 is configured to control, according to the identified identification information of the sensor to be activated, a switch unit connected to the sensor of the identification information to be closed, so that the energy storage unit powers on the sensor of the identification information through the closed switch unit.
The energy conversion module 1 is respectively connected with the processing unit 21 and the energy storage unit 22, and sends the first electric signal to the processing unit 21 and sends the electric energy to the energy storage unit 22.
The energy storage unit 22 stores the electric energy, so that the energy conversion module 1 can obtain the electric energy for storage processing. The energy storage unit 22 may be an energy storage circuit or an energy storage device, and in order to facilitate installation of the passive ultrasonic sensor tag and stabilize performance, a small energy storage device which is small in size, stable in performance and durable is preferred in the embodiment of the present invention.
The processing unit 21 may be a control circuit, or may be a control device such as a low power consumption process control and communication processing chip; the processing unit 21 may recognize the identification information of the sensor to be activated carried in the received first electrical signal, or may process the received first electrical signal to obtain a second electrical signal, and further recognize the identification information of the sensor to be activated carried in the second electrical signal. Similarly, the processing unit 21 may also process the received first electrical signal to obtain a second electrical signal, recognize that the second electrical signal carries other information, such as a control command, and generate response data corresponding to the information. In order to accurately activate the sensor to be activated, in the embodiment of the present invention, the processing unit 21 recognizes the identification information of the sensor to be activated carried in the received first electrical signal, or processes the received first electrical signal to obtain a second electrical signal, and further recognizes the identification information of the sensor to be activated carried in the second electrical signal.
The processing unit 21 may directly control the switch unit 23 connected to the sensor of the identification information to be closed according to the identification information of the identified sensor to be activated, so that the energy storage unit 22 powers on the sensor of the identification information through the closed switch unit 23; the switch unit 23 connected to the sensor of the identification information may also be controlled to be closed through other processing manners, for example, the identified identification information of the sensor to be activated is modulated into a corresponding control signal, and the switch unit 23 connected to the sensor of the identification information is controlled to be closed by the control signal, so that the energy storage unit 22 powers on the sensor of the identification information through the closed switch unit 23. The specific processing unit records a corresponding relationship between each switch unit and the sensor, that is, a corresponding relationship between identification information of the switch and identification information of the sensor, and after the identification information of the sensor to be activated is acquired, the identification information of the switch corresponding to the identification information of the sensor to be activated is determined according to the recorded corresponding relationship between the identification information of the switch and the identification information of the sensor, and the switch of the corresponding identification information is controlled to be closed, so that the energy storage unit 22 powers on the corresponding sensor through the closed switch unit 23.
In the passive ultrasonic sensor tag provided in the embodiment of the present invention, the processing unit 21 controls the switch unit 23 and the energy storage unit 22 to power on the sensor to be activated, so that the sensor to be activated acquires data information. The sensor 3 transmits the acquired data information to the transducer module 1 through the processing unit 21, and the acquired data information is modulated to a second ultrasonic signal and sent out. The passive ultrasonic sensor label is designed in such a way that data information of environment detection can be efficiently transmitted in an electromagnetic shielding or light-inaccessible environment, so that the application range of a sensor label testing system is widened.
Example 6:
on the basis of the above embodiments, in order to better fix the transduction module 1, the processing module 2, and each sensor 3, the passive ultrasonic sensor tag provided by the embodiment of the present invention further includes a fixing module 4;
the fixing module 4 is used for fixing the transduction module 1, the processing module 2 and each sensor 3.
Preferably, the fixing module 4 is a support bracket or a support box.
The fixing module 4 may be a supporting box or a supporting bracket, or may be a supporting cover, and in order to better fix the module 1, the processing module 2 and each sensor 3, the supporting box or the supporting bracket is preferred in the embodiment of the present invention.
The fixing module in the passive ultrasonic sensor tag provided by the embodiment of the invention can better fix the energy conversion module 1, the processing module 2 and each sensor 3, so that the modules can work more stably.
Example 7:
on the basis of the foregoing embodiments, fig. 4 is a structure diagram of a tag system based on a passive ultrasonic sensor tag according to an embodiment of the present invention, where the tag system includes a passive ultrasonic sensor tag 6, and further includes an ultrasonic reader/writer 5 configured to send a first ultrasonic signal to the passive ultrasonic sensor tag and receive a second ultrasonic signal sent by the passive ultrasonic sensor tag.
The transducer module 1 in the passive ultrasonic sensor tag 6 is in contact with the inner surface of the object to be tested 7.
The ultrasonic reader-writer 5 is positioned outside the object to be measured 7, and the distance between the ultrasonic reader-writer and the position of the transducer module 1 is smaller than a set distance threshold.
When the ultrasonic reader/writer 5 stops sending the ultrasonic signal to the passive ultrasonic sensor tag 6, the energy stored in the passive ultrasonic sensor tag 6 is consumed up, and then the power-off default state is recovered.
The ultrasonic reader/writer 5 is configured to transmit a first ultrasonic signal to the passive ultrasonic sensor tag 6 and receive a second ultrasonic signal or a third ultrasonic signal transmitted by the passive ultrasonic sensor tag 6.
The transducer module in the passive ultrasonic sensor tag 6 can convert the first ultrasonic signal into a first electrical signal and electrical energy.
The passive ultrasonic sensor tag 6 is also used for identifying the identification information of the sensor to be activated carried in the first electric signal; the stored electric energy is provided for the sensor 3 corresponding to the identification information in the passive ultrasonic sensor label 6; the passive ultrasonic sensor tag 6 receives data information acquired by the powered sensor, so that a second ultrasonic signal corresponding to the data information is sent.
Further, the passive ultrasonic sensor tag 6 is further configured to preprocess the first electrical signal to obtain a readable second electrical signal, and identify identification information of a sensor to be activated, which is carried in the second electrical signal; and when the second electric signal is identified to carry the control instruction, generating response data corresponding to the control instruction, loading the received response data to the corresponding third ultrasonic signal and sending the third ultrasonic signal.
The ultrasonic reader-writer 5 is further configured to receive a third ultrasonic signal sent by the passive ultrasonic sensor tag 6, perform data analysis processing on the received second ultrasonic signal and/or the received third ultrasonic signal, and extract useful environment detection information. The second ultrasonic signal and the third ultrasonic signal may be the same ultrasonic signal or different ultrasonic signals, that is, the passive ultrasonic sensor tag 6 may carry the response data and the data information acquired by the sensor together in one ultrasonic signal and send the ultrasonic signal to the ultrasonic reader/writer 5, or send the ultrasonic signal to the ultrasonic reader/writer 5 through two ultrasonic signals.
The ultrasonic reader/writer 5 is a signal generating and receiving processing device using ultrasonic waves as a communication medium or carrier. The apparatus can be implemented by means of corresponding software and a hardware platform used in cooperation with the software or by means of hardware, as will be apparent to those skilled in the art.
The ultrasonic reader-writer 5 receives the third ultrasonic signal, and performs data analysis processing on the received second ultrasonic signal and/or third ultrasonic signal to extract useful environment detection information.
The ultrasonic reader-writer 5 and the passive ultrasonic sensor tag 6 in the embodiment of the invention perform communication interaction through ultrasonic waves, and the ultrasonic waves are used as media or carriers of detection data and communication data in the process. Therefore, the environment detection can still be carried out in the environment which can not be shielded by electromagnetic or light, the detected data can be collected and read, and the application range of the existing label system is widened. Meanwhile, the ultrasonic reader-writer 5 also transmits energy to the passive ultrasonic sensor tag 6, and the passive ultrasonic sensor tag 6 converts the energy into electric energy to drive the normal operation of the passive ultrasonic sensor tag, so that the problems of a plurality of limitations and inconvenience, short service life and the like in the use process of a sensor tag testing system due to the use of an internal power supply or a device needing to supply power for a long time are solved, and the potential safety hazards of deflagration, liquid leakage and chemical pollution of the traditional energy storage element are eliminated.
Example 8:
on the basis of the foregoing embodiments, an embodiment of the present invention provides a method for detecting an environment by using a tag system based on a passive ultrasonic sensor tag, as shown in fig. 5, where the method includes:
s501: and identifying identification information of the sensor to be activated carried in the first electric signal, wherein the first electric signal is obtained by converting the first ultrasonic signal sent by the ultrasonic reader-writer.
S502: and providing the stored electric energy to a sensor corresponding to the identification information, wherein the first electric signal is obtained by converting a first ultrasonic signal sent by the ultrasonic reader-writer.
S503: and receiving data information acquired by the electrified sensor so as to send a second ultrasonic signal corresponding to the data information.
Preferably, step S501 includes: and preprocessing the first electric signal to obtain a second electric signal which can be read, and identifying the identification information of the sensor to be activated carried in the second electric signal.
When the second electric signal is identified to carry a control instruction, generating response data corresponding to the control instruction;
and transmitting a third ultrasonic signal corresponding to the response data.
The first electric signal can carry identification information of the sensor to be activated, and the sensor to be activated is activated according to the identification information; or carrying other information such as control instruction and identification signal, and taking corresponding response action according to the information carried by the first electric signal.
The stored electric energy can be directly provided to the sensor corresponding to the identification information, or can be provided to the sensor corresponding to the identification information through other devices such as a switch unit, or can be provided to the sensor corresponding to the identification information after being processed, such as storage distribution.
The received data information collected by the electrified sensor can be directly modulated and converted into a second ultrasonic signal, the data information can be identified and analyzed to obtain a third electric signal, and then the third electric signal is modulated and converted into the second ultrasonic signal.
The response data can also be directly modulated and converted into a third ultrasonic signal, and the response data can also be firstly identified and analyzed to obtain a fourth electric signal, and then the fourth electric signal is modulated and converted into the third ultrasonic signal.
The method provided by the embodiment of the present invention is executed by a corresponding module (unit) in the passive ultrasonic sensor tag provided by the embodiment 1, 2, 3, or 4, and the implementation principle, the function use, the effect, and the like of the method are similar to those of the embodiment 1, 2, 3, or 4, and are not described herein again.
The descriptions of the above embodiments in the present application are only for enabling those skilled in the art to clearly know the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with respect to the above embodiments, those skilled in the art may make various changes and modifications without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
For the system/apparatus embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference may be made to some descriptions of the method embodiments for relevant points.
It is to be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or operation from another entity or operation without necessarily requiring or implying any actual such relationship or order between such entities or operations.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely application embodiment, or an embodiment combining application and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (12)
1. A passive ultrasonic sensor tag, comprising: a transduction module, a processing module and at least one sensor;
the energy conversion module is connected with the processing module and used for converting the received first ultrasonic signal into electric energy and a first electric signal;
the processing module is connected with each sensor and used for storing the electric energy, identifying the identification information of the sensor to be activated carried in the first electric signal and controlling the sensor corresponding to the identification information to be powered on;
the sensor is used for acquiring data information after power-on and sending the acquired data information to the processing module;
the processing module is further used for forwarding the data information sent by the sensor to the energy conversion module;
and the energy conversion module is also used for sending a corresponding second ultrasonic signal according to the received data information.
2. The passive ultrasonic sensor tag of claim 1, wherein the transduction module comprises: the device comprises a transduction unit and a modulation and demodulation unit;
the energy conversion unit is used for converting the received first ultrasonic signal into electric energy;
the modulation and demodulation unit is used for modulating and converting the received first ultrasonic signal into a first electric signal.
3. The passive ultrasonic sensor tag of claim 1, wherein the processing module is specifically configured to preprocess the first electrical signal to obtain a second electrical signal that can be read, and identify identification information of a sensor to be activated carried in the second electrical signal.
4. The passive ultrasonic sensor tag of claim 3, wherein the processing module is further configured to generate response data corresponding to a control instruction when it is recognized that the second electrical signal carries the control instruction, and send the response data to the transduction module;
and the energy conversion module is also used for sending a corresponding third ultrasonic signal according to the received response data.
5. The passive ultrasonic sensor tag of claim 1, wherein the processing module comprises an energy storage unit, a processing unit, and a switching unit, wherein the number of switching units is the same as the number of sensors included in the passive ultrasonic sensor tag;
the energy storage unit is used for storing the electric energy;
each switch unit is connected with the energy storage unit, the processing unit and each corresponding sensor;
and the processing unit is used for controlling the switch unit connected with the sensor with the identification information to be closed according to the identified identification information of the sensor to be activated, so that the energy storage unit powers on the sensor with the identification information through the closed switch unit.
6. The passive ultrasonic sensor tag of claim 1, further comprising a fixing module;
and the fixing module is used for fixing the energy conversion module, the processing module and each sensor.
7. A passive ultrasonic sensor tag as claimed in claim 6, wherein the fixing module is a support bracket or a support box.
8. A tag system based on the passive ultrasonic sensor tag of any one of claims 1 to 7, the tag system comprising the passive ultrasonic sensor tag and further comprising an ultrasonic reader/writer for transmitting a first ultrasonic signal to the passive ultrasonic sensor tag and receiving a second ultrasonic signal transmitted by the passive ultrasonic sensor tag.
9. The tag system of claim 8, wherein the passive ultrasonic sensor tag has a transducer module in contact with an inner surface of the object under test;
the ultrasonic reader-writer is positioned outside the measured object, and the distance between the ultrasonic reader-writer and the position of the energy conversion module is smaller than a set distance threshold value.
10. A method of detection, applied to a passive ultrasonic sensor tag, the method comprising:
identifying identification information of a sensor to be activated carried in a first electric signal, wherein the first electric signal is obtained by converting a first ultrasonic signal sent by an ultrasonic reader-writer;
providing the stored electric energy to a sensor corresponding to the identification information, wherein the electric energy is obtained by converting the first ultrasonic signal;
and receiving data information acquired by the electrified sensor so as to send a second ultrasonic signal corresponding to the data information.
11. The method of claim 10, wherein the identifying the identification information of the sensor to be activated carried in the first electrical signal comprises:
and preprocessing the first electric signal to obtain a second electric signal which can be read, and identifying the identification information of the sensor to be activated carried in the second electric signal.
12. The method of claim 11, wherein the method further comprises:
when the second electric signal is identified to carry a control instruction, generating response data corresponding to the control instruction; so that a third ultrasonic signal corresponding to the response data is transmitted.
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Application publication date: 20200313 |