CN114175511A - Monitoring device, wireless communication device and receiving method - Google Patents
Monitoring device, wireless communication device and receiving method Download PDFInfo
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- CN114175511A CN114175511A CN201980098151.6A CN201980098151A CN114175511A CN 114175511 A CN114175511 A CN 114175511A CN 201980098151 A CN201980098151 A CN 201980098151A CN 114175511 A CN114175511 A CN 114175511A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
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Abstract
The application discloses a wireless communication device, a monitoring device and a receiving method. The wireless communication apparatus includes: the first transceiver circuit and the second transceiver circuit are respectively connected with the controller. The first transceiving circuit and the second transceiving circuit operate at the same frequency and are used for respectively wirelessly communicating with the external device while simultaneously receiving signals of the external device. The first transceiving circuit is used for receiving and demodulating a signal of an external device to generate a first signal, and the second transceiving circuit is used for receiving and demodulating the signal of the external device to generate a second signal; the controller is used for carrying out data verification on the first signal and the second signal so as to obtain a signal with normal information in the first signal and the second signal, and selecting the normal signal as a final signal obtained by the wireless communication equipment from external equipment.
Description
The application belongs to the technical field of medical instruments, and particularly relates to a monitoring device, a wireless communication device and a receiving method.
In wireless medical telemetry systems, communication is required between a monitoring device and a wireless communication device to transmit relevant data and instructions. However, due to the objective existence of the multipath effect, the wireless communication device or the monitoring device has the possibility of packet loss during the data transmission between the monitoring device and the wireless communication device, and the normal operation of the wireless medical telemetry system is affected.
Disclosure of Invention
The technical problem to be solved by the present application is how to reduce the possibility of packet loss in the wireless transmission process of the wireless communication device and the monitoring device.
In order to solve the technical problem, the application provides wireless communication equipment which is used in a wireless medical telemetering system. The wireless communication apparatus includes: the device comprises a controller, a first transceiving circuit and a second transceiving circuit, wherein the first transceiving circuit and the second transceiving circuit are respectively connected with the controller.
The first transceiver circuit and the second transceiver circuit work at the same frequency and are used for respectively wirelessly communicating with an external device and simultaneously receiving signals of the external device; the first transceiver circuit is configured to receive and demodulate a signal of the external device to generate a first signal, and the second transceiver circuit is configured to receive and demodulate a signal of the external device to generate a second signal.
The controller is configured to perform data verification on the first signal and the second signal to obtain a signal with normal information in the first signal and the second signal, and select the normal signal as a final signal obtained by the wireless communication device from the external device.
In an embodiment, the controller is further configured to send a signal indicating that the information is normal to the remote monitoring center device.
In an embodiment, the controller is further configured to compare signal strengths of the first signal and the second signal when the first signal and the second signal are both normal signals, and use a signal with a higher signal strength of the first signal and the second signal as a final signal acquired by the wireless communication device from the external device.
In one embodiment, the controller is further configured to skip the step of data verification when the first signal and the second signal are both abnormal signals; and comparing the signal strength of the first signal and the second signal, and taking the signal with higher signal strength in the first signal and the second signal as a final signal acquired by the wireless communication equipment from the external equipment.
In one embodiment, the first transceiver circuit includes a first modem, a first rf link, and a first antenna, which are connected in sequence. The first antenna is used for receiving a signal sent by the external equipment; the first radio frequency link is at least used for filtering signals received by the first antenna; the first modem is configured to demodulate the filtered signal to obtain the first signal, and transmit the first signal to the controller.
In an embodiment, the second transceiver circuit includes a second modem, a second rf link, and a second antenna, which are connected in sequence. The second antenna is used for receiving a signal sent by the external equipment; the second radio frequency link is at least used for filtering signals received by the second antenna; the second modem is configured to demodulate the filtered signal to obtain the second signal, and transmit the second signal to the controller.
In an embodiment, the controller is further configured to transmit a communication signal through the first transceiver circuit or the second transceiver circuit corresponding to the final signal.
The present application also provides another wireless communication device, comprising: the radio frequency antenna comprises a first antenna, a second antenna, a controller, a modem, a radio frequency link and a switch which are connected in sequence; wherein the switch is configured to selectively turn on the first antenna or the second antenna.
The first antenna and the second antenna are used for respectively acquiring signals of external equipment when the antenna is turned on.
The radio frequency link is at least used for filtering signals received by the first antenna and the second antenna.
The modem is configured to demodulate signals received by the first antenna and the second antenna to generate a first signal and a second signal, respectively.
The controller is configured to compare the demodulated first signal and the demodulated second signal to obtain a signal with a higher signal strength from the first signal and the second signal, and transmit and receive the signal through an antenna corresponding to the signal with the higher signal strength.
In an embodiment, the controller is further configured to send the received first signal or the second signal to a remote monitoring center device.
In one embodiment, the controller is further configured to transmit a communication signal, and the modem is configured to modulate the communication signal to generate and transmit the communication signal through an antenna corresponding to the signal with higher signal strength.
The present application further provides a monitoring device, comprising: the radio frequency antenna comprises a first antenna, a second antenna, a controller, a modem, a radio frequency link and a switch which are connected in sequence; wherein the switch is configured to selectively turn on the first antenna or the second antenna.
The first antenna and the second antenna are used for respectively acquiring communication signals of the wireless communication equipment when the antenna is turned on.
The radio frequency link is at least used for filtering communication signals received by the first antenna and the second antenna.
The modem is configured to demodulate the communication signals received by the first antenna and the second antenna to generate a first communication signal and a second communication signal, respectively.
The controller is configured to compare the demodulated first communication signal with the demodulated second communication signal to obtain a signal with a higher signal strength in the first communication signal and the second communication signal, and transmit and receive the signal through an antenna corresponding to the signal with the higher signal strength.
In one embodiment, the monitoring device further comprises a parameter acquisition component for acquiring parameter information of the target object, and the controller is further configured to use the parameter information and/or alarm information of the target object as signal content and generate a parameter signal through the modem; and the parameter signal is transmitted sequentially through the radio frequency link, the switch and the first antenna or the second antenna.
In one embodiment, the distance between the first antenna and the second antenna is a quarter wavelength or a half wavelength.
The present application also provides another monitoring device comprising: the device comprises a controller, a first transceiving circuit and a second transceiving circuit, wherein the first transceiving circuit and the second transceiving circuit are respectively connected with the controller.
The first transceiver circuit and the second transceiver circuit work at the same frequency and are used for respectively wirelessly communicating with wireless communication equipment and simultaneously receiving signals of the wireless communication equipment; the first transceiver circuit is configured to receive and demodulate signals of the wireless communication device to generate first communication signals, and the second transceiver circuit is configured to receive and demodulate signals of the wireless communication device to generate second communication signals.
The controller is configured to perform data verification on the first communication signal and the second communication signal to obtain a signal with normal information in the first communication signal and the second communication signal, and the signal is used as a final signal obtained by the monitoring device from the wireless communication device.
In an embodiment, the controller is further configured to compare signal strengths of the first communication signal and the second communication signal when both the first communication signal and the second communication signal are normal signals, and use a signal with a higher signal strength of the first communication signal and the second communication signal as a final signal acquired by the monitoring device from the wireless communication device.
In one embodiment, the controller is further configured to skip the step of data checking when both the first communication signal and the second communication signal are abnormal signals; and comparing the signal strength of the first communication signal with that of the second communication signal, and taking the signal with higher signal strength in the first communication signal and the second communication signal as a final signal acquired by the monitoring device from the wireless communication device.
In one embodiment, the first transceiver circuit includes a first modem, a first rf link, and a first antenna, which are connected in sequence.
The first antenna is used for receiving signals sent by external equipment; the first radio frequency link is at least used for filtering signals received by the first antenna; the first modem is configured to demodulate the filtered signal to obtain the first communication signal, and transmit the demodulated first communication signal to the controller.
In an embodiment, the second transceiver circuit includes a second modem, a second rf link, and a second antenna, which are connected in sequence.
The second antenna is used for receiving signals sent by external equipment; the second radio frequency link is at least used for filtering signals received by the second antenna; the second modem is configured to demodulate the filtered signal to obtain the second communication signal, and transmit the demodulated second communication signal to the controller.
In an embodiment, the controller is further configured to transmit a signal through the first transceiver circuit or the second transceiver circuit corresponding to the final signal.
The application also provides a receiving method which is used in the wireless medical remote sensing system. The receiving method comprises the following steps:
the first transceiver circuit and the second transceiver circuit which work at the same frequency respectively receive signals of external equipment at the same time.
The first transceiver circuit demodulates the received signal to obtain a first signal, and the second transceiver circuit demodulates the received signal to obtain a second signal.
And performing data verification on the first signal and the second signal to acquire a signal with normal information in the first signal and the second signal, and selecting the normal signal as a final signal acquired from the external equipment.
In one embodiment, the signal strengths of the first signal and the second signal are compared when the first signal and the second signal are both normal signals.
And taking the signal with higher signal strength in the first signal and the second signal as the final signal acquired from the external equipment.
In one embodiment, when the first signal and the second signal are both abnormal signals, the step of data verification is skipped;
and comparing the signal strength of the first signal and the second signal, and taking the signal with higher signal strength in the first signal and the second signal as a final signal acquired by the wireless communication equipment from the external equipment.
The present application also provides another receiving method, including:
and receiving signals of the external equipment through the first antenna and the second antenna respectively.
The signal received by the first antenna is processed to obtain a first signal, and the signal received by the second antenna is processed to obtain a second signal.
And comparing the signal strength of the first signal and the second signal to obtain a signal with higher signal strength in the first signal and the second signal, and transmitting and receiving the signal through an antenna corresponding to the signal with higher signal strength.
In one embodiment, the external device is from a wireless communication device or a monitoring device.
By arranging two paths of receiving and transmitting circuits for respectively receiving signals, when the two paths of receiving and transmitting circuits are applied to wireless communication equipment, the wireless communication equipment can be ensured to timely and accurately receive the signals sent by external equipment; when the two-way transceiver circuit is applied to the monitoring equipment, the monitoring equipment can be ensured to be in communication connection with the wireless communication equipment so as to receive communication signals.
The application also sets a switchable double-antenna structure, so that when the double-antenna structure is applied to the wireless communication equipment, the wireless communication equipment can switch the antenna for receiving signals so as to timely and accurately receive the signals sent by the external equipment; when the dual-antenna structure is applied to the monitoring device, the monitoring device can switch the antenna for receiving signals and maintain the communication connection with the wireless communication device to receive the communication signals.
The method for receiving the wireless medical remote sensing system enables the wireless communication equipment and the monitoring equipment to receive signals timely and accurately in the process of wireless communication so as to ensure that the wireless communication equipment and the monitoring equipment acquire the signal content in the signals.
Fig. 1 is a block diagram of a wireless communication device according to an embodiment of the present disclosure.
Fig. 2 is a schematic diagram of another wireless communication device according to an embodiment of the present disclosure.
Fig. 3 is a block diagram of a monitoring device according to an embodiment of the present application.
Fig. 4 is a schematic diagram of another monitoring device provided in the embodiments of the present application.
Fig. 5 is a flowchart of a receiving method according to an embodiment of the present application.
Fig. 6 is a flowchart of another receiving method according to an embodiment of the present application.
For a more clear understanding of the technical features, objects, and effects of the present application, specific embodiments of the present application will now be described in detail with reference to the accompanying drawings.
In a normal wireless medical telemetry system, a wireless communication device transmits signals through a fixed frequency band, for example, parameters such as an electrocardiogram parameter (ECG), a blood oxygen saturation parameter (SpO2), a non-invasive blood pressure parameter (NIBP) and the like acquired from a target object and alarm information for each parameter are transmitted to the wireless communication device, and the wireless communication device transmits the data to a remote monitoring center device. And the medical staff analyzes the physical state of the target object according to the parameters and the alarm information so as to determine the operation required to be carried out subsequently. In hospitals and other places, because the number of target objects is large and the distribution density is large, the parameter types of some target objects needing to be paid attention to mainly include the electrocardiogram parameters, and the parameter types of other target objects needing to be paid attention to mainly include the blood oxygen saturation parameter and the blood pressure parameter. Accordingly, different target subjects may be paired with monitoring devices of different types or produced by different manufacturers.
In the process of daily remote medical monitoring of target objects, due to the high complexity of room distribution of each floor of a hospital, the high density of the target objects, and the large number of monitoring devices and emergency equipment for different target objects, the multipath effect of signals in the transmission process is also serious. Therefore, the wireless transmission signal may be attenuated quickly, and the normal wireless communication device may lose packets, distort or fail to receive the signal of the monitoring device frequently. In some cases, the emergency situation of the target object is easily unknown by medical care personnel, and even the time for the medical care personnel to rescue the target object is delayed.
Based on the above problems, embodiments of the present application provide a wireless communication device (10a, 10b), a monitoring device (20a, 20b), and a receiving method. In some embodiments, the wireless communication device 10a and the monitoring device 20a can receive signals through two transceiver circuits respectively, so as to select the signal with higher intensity from the two received signals. In other embodiments, the wireless communication device 10b and the monitoring device 20b are both configured with two switchable antennas, which may be, for example, a quarter wavelength or a half wavelength apart. When the receiving effect of one antenna is poor, the other antenna can be switched to receive. Because a phase difference of a quarter or a half cycle exists between the two antennas, when a signal is received by the other antenna, the possibility of receiving the signal by the antenna can be improved, and the influence of multipath effect on signal transmission can be reduced.
Therefore, parameter information and alarm information acquired by the monitoring equipment from the target object can be timely and accurately transmitted to the wireless communication equipment (10a, 10b) so as to be called, checked, analyzed or subjected to other operations by medical personnel; the monitoring devices (20a, 20b) can timely and accurately receive the communication signals sent by the wireless communication devices.
The hypertension target object is used for supplementing and explaining, when the hypertension target object monitors the change of the blood pressure parameter through the monitoring equipment, the blood pressure value is higher due to the body state of the hypertension target object, the monitoring equipment is easy to trigger to alarm, and alarm information can be generated every time the alarm is given. The blood pressure parameter and the alarm information of the target object need to be timely sent to the wireless communication device for forwarding by the wireless communication device, such as to a remote monitoring center device. Correspondingly, medical personnel of the remote monitoring center equipment can check the parameter information and the alarm information of the target object so as to obtain the blood pressure change of the target object in real time.
However, in the process from the monitoring device to the wireless communication device, as analyzed above, there are many targets, many monitoring devices, and relatively complex arrangement of rooms, and due to the influence of multipath effect, some signals of the monitoring devices may not be transmitted to the wireless communication device in time, which is likely to cause accidents. The wireless communication devices (10a, 10b), the monitoring devices (20a, 20b) and the receiving methods in the embodiments of the present application also address such instability of signal transmission, and the wireless communication devices (10a, 10b) and the monitoring devices (20a, 20b) of the present application will be described in detail below.
Referring to fig. 1, a wireless communication device 10a according to an embodiment of the present application includes: a controller 100, a first transceiver circuit 110a, and a second transceiver circuit 110 b.
The first transceiver circuit 110a and the second transceiver circuit 110b are respectively connected to the controller 100 to transmit the respectively received signals to the controller 100, thereby enabling wireless communication with external devices including the monitoring device.
In order to make the wireless communication device 10a receive the signal carrying the same content transmitted by the same device, in general, the first transceiver circuit 110a and the second transceiver circuit 110b of the wireless communication device 10a are set to operate at the same frequency in each embodiment, so as to simultaneously receive the signal transmitted by the external device. For the same signal sent by the device, the first transceiver circuit 110a senses to generate a first signal, the second transceiver circuit 110b senses to generate a second signal, and the first signal and the second signal are transmitted to the controller 100 of the wireless communication device 10 a. The controller 100 may check the first signal and the second signal through a data check algorithm to determine which of the first signal and the second signal is a signal belonging to a normal information, and then the controller 100 regards the signal belonging to the normal information as a final signal acquired from the external device. The subsequent wireless communication device 10a can send the information normal signal to other devices. It should be understood that the controller 100 may transmit the final signal through a switch or the like; alternatively, the controller 100 may transmit a signal that the information is normal through the first transceiving circuit 110a or the second transceiving circuit 110b corresponding to the final signal.
Compared with the normal wireless communication device, the wireless communication device 10a provided by the embodiment can perform signal transmission according to two transceiver circuits (110a, 110b) which work independently. Therefore, the signal receiving capability of the wireless communication device 10a can be improved, so as to reduce the possibility of signal packet loss, distortion or interruption. Therefore, medical care personnel can timely and accurately receive the parameter information and the alarm information of the current target object. In some cases, according to the signals acquired in time, the medical staff can rescue the target object in an emergency in the shortest time without delaying the rescue opportunity.
In some embodiments, the controller 100 is further configured to compare signal strengths of the first signal and the second signal when both the first signal and the second signal are determined to be normal signals, such as analyzing signal-to-noise ratios of the first signal and the second signal. Thus, the wireless communication device 10a can acquire the signal with higher signal strength and use the signal with higher signal strength as the final signal acquired by the wireless communication device 10a from the external device; the subsequent wireless communication device 10a may transmit the higher strength signal.
In some embodiments, the controller 100 may determine that the step of data verification may not be justified when both the first signal and the second signal are determined to be abnormal signals. Thus, the controller 100 skips the step of data verification, compares the signal strengths of the first signal and the second signal to obtain the signal with higher signal strength in the first signal and the second signal, and uses the signal with higher signal strength as the final signal obtained by the wireless communication device 10a from the external device; the subsequent wireless communication device 10a may transmit the higher strength signal. When medical staff check parameter information of corresponding signals in a remote monitoring center, if the parameter information is normally displayed, the fact that data verification is unreasonable and adjustment is needed can be determined; if the parameter information is not displayed properly, it may be determined that the wireless communication device 10a is malfunctioning and a technician may be notified to perform maintenance.
In order to simplify the analysis and facilitate understanding of the technical solution of the present application, the first signal is exemplified as a signal with normal information and high signal strength.
The monitoring device converts the parameter information of the target object into electrical information through the parameter acquisition component, for example, the electrical information is a blood pressure parameter. The monitoring device processes the electrical information of the blood pressure parameters through steps of modulation, frequency mixing, amplification, filtering and the like, and then sends the electrical information to the external space through the antenna in an electromagnetic wave signal mode.
The first transceiver circuit 110a and the second transceiver circuit 110b of the wireless communication device 10a respectively receive the electromagnetic wave signals, and correspondingly obtain a first signal and a second signal after the steps of filtering, amplifying, mixing, demodulating and the like. The first signal and the second signal may be transmitted to the controller 100 through a data bus, and the controller 100 performs data verification on the first signal and the second signal to determine whether the signal content of the first signal and the second signal includes the blood pressure parameter of the target subject.
In a possible implementation manner, a check value obtained after the data check is performed on the second signal is different from a predetermined check value, and it is determined that the second signal received by the second transceiver circuit 110b loses packets; that is, the second signal does not actually include the complete blood pressure parameter of the target subject. Thereby, the controller 100 selects the first signal as the final signal to perform the transmission operation.
In a possible implementation manner, the check value obtained after the data check is performed on the second signal is the same as the predetermined check value. The controller 100 compares the signal strengths of the first and second signals and determines that the signal strength of the first signal is higher than the signal strength of the second signal. Thereby, the controller 100 selects the first signal as the final signal to perform the transmission operation.
In other embodiments, the second signal may also be used as a signal with normal information and higher signal strength, which is not described herein again.
Referring to fig. 1, in some embodiments, the first transceiver circuit 110a may include a first modem 112a, a first rf link 114a and a first antenna 116a, which are connected in sequence. The first antenna 116a may receive signals from an external device, and the first rf link 114a may filter, amplify, and mix the received signals to reduce noise of the received signals. The first modem 112a can demodulate the processed signal to obtain the signal content in the signal and generate a first signal.
Similar to the structure of the first transceiver circuit 110a, the second transceiver circuit 110b may include a second modem 112b, a second rf link 114b, and a second antenna 116b, which are connected in sequence. The second antenna 116b may receive signals from an external device, and the second rf link 114b may filter, amplify, and mix the received signals to reduce noise of the received signals. The second modem 112b can demodulate the processed signal to obtain the signal content in the signal and generate a second signal.
In some embodiments, it should be understood that, in addition to receiving signals, the wireless communication device 10a may also transmit communication signals through the first transceiver circuit 110a or the second transceiver circuit 110b corresponding to the final signals. Such as: the final signal is the first signal received by the first transceiver circuit 110a, and the wireless communication device 10a transmits the communication signal through the first transceiver circuit 110 a. By analogy, if the final signal is the second signal received by the second transceiver circuit 110b, the wireless communication device 10a transmits the communication signal through the second transceiver circuit 110 b.
Referring to fig. 2, another wireless communication device 10b is provided in the embodiment of the present application, and like the wireless communication device 10a in the above embodiments, the wireless communication device 10b receives a signal transmitted by an external device by setting a first antenna 126a and a second antenna 126b that can be switched. For simplicity of analysis, the wireless communication device 10b in the embodiments is described by taking the example of receiving the signal transmitted by the monitoring device.
Referring to fig. 2, in some embodiments, the wireless communication device 10b includes: controller 100, modem 122, radio frequency link 124, switch K1, first antenna 126a, and second antenna 126 b.
The controller 100, the modem 122, the rf link 124, and the switch K1 are sequentially connected, and the switch K1 is used to selectively turn on the first antenna 126a or the second antenna 126 b. Accordingly, the switch K1 is a single-pole double-throw switch, the fixed end of the switch K1 is connected to the rf link 124, and the active end is selectively connected to the first antenna 126a or the second antenna 126b, so as to turn on the first antenna 126a or the second antenna 126 b.
For example, the active terminal of the switch K1 may select one of the first antenna 126a and the second antenna 126b to connect with the rf link 124.
When the first antenna 126a and/or the second antenna 126b are connected to the rf link 124 through the switch K1, the first antenna 126a and/or the second antenna 126b may transmit and receive related signals and may be turned on. Thus, the first antenna 126a and the second antenna 126b can respectively receive signals sent by external devices when being turned on.
When the switch K1 is switched to connect with the first antenna 126a, the first antenna 126a receives a signal from the monitoring device, and the signal received by the first antenna 126a is processed by filtering, amplifying, mixing, demodulating, etc. sequentially through the rf link 124 and the modem 122 to generate a first signal, and then transmitted to the controller 100. When the switch K1 is switched to connect with the second antenna 126b, the second antenna 126b receives signals from an external device. The signal received by the second antenna 126b is filtered, amplified, mixed, and demodulated by the common rf link 124 and the modem 122 in sequence to generate a second signal, which is then transmitted to the controller 100.
As mentioned above, the switch K1 may select one of the first antenna 126a and the second antenna 126b to be connected to the rf link, so that the first antenna 126a and the second antenna 126b receive signals sequentially and generate the first signal and the second signal sequentially through the rf link 124 and the modem 122.
The controller 100 of the wireless communication device 10b compares the signal strength of the first signal and the second signal to determine which of the first antenna 126a and the second antenna 126b received the better signal, and controls the switch K1 to connect to the antennas to receive the signal and transmit the associated signal.
Taking the first signal as a higher strength example, in some embodiments, the wireless communication device 10b compares the signal strength of the first signal and the second signal when it starts receiving. The controller 100 determines that the signal strength of the first signal received through the first antenna 126a is high, controls the switch K1 to switch to connect with the first antenna 126a, and receives and transmits a relevant signal through the first antenna 126 a.
In some embodiments, the wireless communication device 10b can ensure that the acquired signal is a normal signal, and the signal contains parameter information and alarm information of the target object. Subsequently, the wireless communication device 10b may transmit the received signal to the remote monitoring center device 30 for medical staff to review.
Referring to fig. 3, a monitoring device 20a according to an embodiment of the present invention is similar to the structure of the wireless communication device 10a in the above embodiments, and the monitoring device 20a receives signals of various types of wireless communication devices through the controller 200 and the first transceiver circuit 210a and the second transceiver circuit 210b respectively connected to the controller 200.
In some embodiments, the first transceiver circuit 210a and the second transceiver circuit 210b of the monitoring device 20a are configured to operate at the same frequency to simultaneously receive the same signal transmitted by the wireless communication device. The first transceiver circuit 210a senses to generate a first communication signal, and the second transceiver circuit 210b senses to generate a second communication signal, and the first communication signal and the second communication signal are transmitted to the controller 200 of the monitoring device 20 a. The controller 200 may verify the first communication signal and the second communication signal through a data verification algorithm to determine which of the first communication signal and the second communication signal is a signal belonging to normal information; the controller 200 takes the signal that the information is normal as the final signal acquired from the wireless communication device.
Compared with the normal monitoring device, the monitoring device 20a provided in this embodiment can perform signal transmission according to two relatively independently operating transceiver circuits (210a, 210 b). The signal receiving capability of the monitoring device 20a can be improved to reduce the possibility of signal loss, distortion or interruption.
In some embodiments, the controller 200 is further configured to compare the signal strengths of the first communication signal and the second communication signal, such as analyzing the signal-to-noise ratio of the first communication signal and the second communication signal, when both the first communication signal and the second communication signal are determined to be normal signals. Thus, the monitoring device 20a can acquire the signal with higher signal strength and use the signal with higher signal strength as the final signal acquired by the monitoring device 20a from the wireless communication device.
In some embodiments, the controller 200 may determine that the step of data verification may not be justified when both the first communication signal and the second communication signal are determined to be abnormal signals. Thus, the controller 200 skips the data checking step and compares the signal strengths of the first communication signal and the second communication signal to obtain the signal with higher signal strength of the first communication signal and the second communication signal, and uses the signal with higher signal strength as the final signal obtained by the monitoring device 20a from the wireless communication device. When the monitoring device 20a performs a relevant operation in response to the communication signal, it may be determined that the data verification is not reasonable and needs to be adjusted; if the monitoring device 20a does not perform the relevant operation in response to the communication signal, it can be determined that the monitoring device 20a is malfunctioning and notify a technician for maintenance.
In order to simplify the analysis and facilitate understanding of the technical solution of the present application, the first communication signal is also exemplified as a signal with normal information and high signal strength.
The wireless communication equipment converts the communication instruction into electric information, and the electric information is processed by the steps of modulation, frequency mixing, amplification, filtering and the like and then is transmitted to the external space by the antenna in an electromagnetic wave signal mode.
The first transceiver circuit 210a and the second transceiver circuit 210b of the monitoring device 20a respectively receive the electromagnetic wave signals, and correspondingly obtain a first communication signal and a second communication signal after the steps of filtering, amplifying, mixing, demodulating, and the like. The first communication signal and the second communication signal may be transmitted to the controller 200 through a data bus, and the controller 200 performs data verification on the first communication signal and the second communication signal to determine whether signal contents in the first communication signal and the second communication signal include the blood pressure parameter of the target object.
In a possible implementation manner, a check value obtained after the data check is performed on the second communication signal is different from a predetermined check value, and it is determined that the second communication signal received by the second transceiver circuit 210b loses packet; that is, the second communication signal does not actually include a communication instruction of the wireless communication device. Thus, the controller 200 acquires the signal content of the first communication signal to perform the correlation operation.
In a possible implementation manner, the check value obtained after the data check is performed on the second communication signal is the same as the predetermined check value. The controller 200 compares the signal strengths of the first and second communication signals and determines that the signal strength of the first communication signal is higher than the signal strength of the second communication signal. Thus, the controller 200 acquires the signal content of the first communication signal to perform the correlation operation.
In some other embodiments, the second communication signal may also be used as a signal with normal information and higher signal strength, which is not described herein again.
Referring to fig. 3, in some embodiments, the first transceiver circuit 210a may include a first modem 212a, a first rf link 214a and a first antenna 216a connected in sequence. The first antenna 216a may receive signals transmitted by the wireless communication device, and the first rf link 214a may filter, amplify, and mix the received communication signals to reduce noise of the received communication signals. The first modem 212a may demodulate the processed communication signal to obtain the signal content in the signal and generate a first communication signal.
Similar to the structure of the first transceiver circuit 210a, the second transceiver circuit 210b may include a second modem 212b, a second rf link 214b, and a second antenna 216b, which are connected in sequence. The second antenna 216b may receive signals transmitted by the wireless communication device, and the second rf link 214b may filter, amplify, and mix the received communication signals to reduce noise of the received communication signals. The second modem 212b can demodulate the processed communication signal to obtain the signal content of the signal and generate a second communication signal.
In some embodiments, the monitoring device 20a can also transmit signals through the first transceiver circuit 210a or the second transceiver circuit 210b in addition to receiving signals. Such as: the final signal is the first signal received by the first transceiver circuit 210a, and the monitoring device 20a transmits the signal through the first transceiver circuit 210 a. By analogy, if the final signal is the second signal received by the second transceiver circuit 210b, the monitoring device 20a transmits the signal through the second transceiver circuit 110 b.
Referring to fig. 4, another monitoring device 20b is provided according to an embodiment of the present application, wherein the monitoring device 20b can receive a communication signal sent by a wireless communication device, acquire parameter information of a target object through a parameter acquisition component 40, and send a parameter signal loaded with the parameter information and/or alarm information of the target object to the wireless communication device. In order to improve the stability of wireless communication with the wireless communication device, the monitoring device 20b in the embodiments of the present application is configured to receive a communication signal sent by the wireless communication device and send a related signal by setting the first antenna 226a and the second antenna 226b to be switchable.
Referring to fig. 4, in some embodiments, the monitoring device 20b includes at least: controller 200, modem 222, radio frequency link 224, switch K2, first antenna 226a, and second antenna 226 b.
The controller 200, the modem 222, the rf link 224 and the switch K2 are sequentially connected, and the switch K2 is used to selectively turn on the first antenna 226a or the second antenna 226 b. Accordingly, the switch K2 is a single pole double throw switch K2. Thus, the first antenna 226a and the second antenna 226b may respectively receive signals of the external space when turned on.
For simplicity, the monitoring device 20b is illustrated in various embodiments as receiving a communication signal transmitted by a wireless communication device. It should also be understood that the monitoring device 20b may also implement data interchange or data aggregation among multiple monitoring devices in various embodiments. When the switch K2 is switched to connect with the first antenna 226a, the first antenna 226a receives the communication signal, and the communication signal received by the first antenna 226a is filtered, amplified, mixed, demodulated, and the like by passing through the rf link 224 and the modem 222 in sequence to generate a first communication signal, and then transmitted to the controller 200. When the switch K2 is switched into connection with the second antenna 226b, the second antenna 226b receives the communication signal. The communication signal received by the second antenna 226b is filtered, amplified, mixed and demodulated by the rf link 224 and the modem 222 in turn to generate a second communication signal, which is then transmitted to the controller 200.
The controller 200 of the monitoring device 20b compares the signal strength of the first communication signal and the second communication signal to determine which of the first antenna 226a and the second antenna 226b receives the better signal, and controls the switch K2 to connect with the antennas to receive the communication signals and transmit the associated signals.
Taking the first communication signal as a higher strength example, in some embodiments, the monitoring device 20b compares the signal strength of the first communication signal and the second communication signal when the monitoring device starts receiving the communication signal. The controller 200 determines that the signal strength of the first communication signal received through the first antenna 226a is high, controls the switch K2 to switch to connect with the first antenna 226a, and receives the communication signal and transmits a related signal through the first antenna 226 a.
In some embodiments, the monitoring device 20b can receive the communication signal of the wireless communication device in a timely manner and perform related operations according to the content of the communication signal contained in the communication signal.
Referring to fig. 5 and fig. 6, the embodiments of the present application further provide receiving methods corresponding to the above wireless communication devices (10a, 10b) or monitoring devices (20a, 20b), which are applied in a wireless medical telemetry system and are used for receiving signals transmitted by the wireless communication devices or monitoring devices.
Referring to fig. 5, in some embodiments, a receiving method provided in the embodiments of the present application includes, but is not limited to, the following steps:
s101: the first transceiver circuit and the second transceiver circuit which work at the same frequency respectively receive signals of external equipment at the same time.
The first transceiver circuit can refer to the first transceiver circuit 110a of the wireless communication device 10a in the above embodiment, or refer to the first transceiver circuit 210a of the monitoring device 20 a. Correspondingly, the second transceiver circuit can refer to the second transceiver circuit 110b of the wireless communication device 10a in the above embodiments, or refer to the second transceiver circuit 210b of the monitoring device 20a, which is not limited herein.
S102: the first transceiver circuit demodulates the received signal to obtain a first signal, and the second transceiver circuit demodulates the received signal to obtain a second signal.
The first transceiver circuit may perform filtering, amplifying, mixing, demodulating, and other processing on the received signal, respectively, to obtain a first signal. The second transceiver circuit may perform filtering, amplifying, mixing, and demodulating, respectively, on the received signal to obtain a second signal.
Since it is not certain which of the obtained first signal and second signal is a signal belonging to normal information, it is also necessary to check or compare the first signal and the second signal. Based on this, the receiving method further includes:
s103: and performing data verification on the first signal and the second signal to acquire a signal with normal information in the first signal and the second signal, and selecting the normal signal as a final signal acquired from the external equipment.
It should be understood that the receiving method provided in the embodiments of the present application may reduce the possibility of signal packet loss, distortion or interruption by setting the first transceiver circuit and the second transceiver circuit to operate at the same frequency to simultaneously receive and process the same signal sent by the external device.
The receiving method provided by the embodiment of the application further includes: when both the first signal and the second signal are determined to be normal signals, the signal strengths of the first signal and the second signal are compared, such as analyzing the signal-to-noise ratio of the first signal and the second signal. Thus, a signal with a high signal strength can be acquired and used as a final signal acquired from the external device.
It should be appreciated that since the final signal is the signal of the first signal and the second signal with higher signal strength, the subsequent correlation processing of the final signal can be facilitated; such as: the final signal is transmitted or correlation operations are performed depending on the signal content of the final signal.
The receiving method provided by the embodiment of the application further includes: the step of preliminarily determining the data verification is not reasonable when both the first signal and the second signal are determined to be abnormal signals. Therefore, the step of data verification is skipped, the signal strength of the first signal and the second signal is compared, and the signal with higher signal strength in the first signal and the second signal is obtained and is taken as the final signal obtained from the external equipment.
In order to simplify the analysis and facilitate understanding of the technical solution of the present application, the first signal is exemplified as a signal with normal information and high signal strength.
The method comprises the steps of respectively receiving electromagnetic wave signals sent by external equipment through a first transceiver circuit and a second transceiver circuit, correspondingly obtaining a first signal and a second signal after the steps of filtering, amplifying, mixing, demodulating and the like, and carrying out data verification on the first signal and the second signal through a data verification algorithm.
In a possible implementation manner, a check value obtained after data check is performed on the second signal is different from a predetermined check value, and packet loss of the second signal received by the second transceiver circuit is determined; i.e. the second signal does not actually comprise the complete signal content. Thereby, the first signal is selected as the final signal.
In a possible implementation manner, the check value obtained after the data check is performed on the second signal is the same as the predetermined check value. The signal strengths of the first and second signals are then compared and it is determined that the signal strength of the first signal is higher than the signal strength of the second signal. Thereby, the first signal is selected as the final signal.
Referring to fig. 6, another receiving method is provided in the embodiments of the present application, where the receiving method corresponds to the wireless communication device 10b or the monitoring device 20b in the above embodiments. Another receiving method provided in the embodiment of the present application includes, but is not limited to, the following steps:
s201: and receiving signals of the external equipment through the first antenna and the second antenna respectively.
The first antenna may refer to the first antenna 126a of the wireless communication device 10b in the above embodiments, or refer to the first antenna 226a of the monitoring device 20 b. The second antenna may refer to the second antenna 126b of the wireless communication device 10b in the above embodiments, or refer to the second antenna 226b of the monitoring device 20b, which is not limited thereto.
S202: the signal received by the first antenna is processed to obtain a first signal, and the signal received by the second antenna is processed to obtain a second signal.
The step of processing the signal may include, but is not limited to, filtering, amplifying, mixing, and demodulating, which is not described herein again.
S203: and comparing the signal strength of the first signal and the second signal to obtain a signal with higher signal strength in the first signal and the second signal, and transmitting and receiving the signal through the antenna corresponding to the signal with higher signal strength.
It should be understood that by the receiving method, the possibility of signal packet loss can be reduced as well to ensure that the received signal is a normal signal.
The above disclosure is only for the specific embodiments of the present application, but the present application is not limited thereto, and those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. It is to be understood that such changes and modifications are intended to be included within the scope of the appended claims. In addition, although specific terms are used herein, they are used in a descriptive sense only and not for purposes of limitation.
Claims (24)
- A wireless communication device for use in a wireless medical telemetry system, the wireless communication device comprising: the device comprises a controller, a first transceiving circuit and a second transceiving circuit, wherein the first transceiving circuit and the second transceiving circuit are respectively connected with the controller;the first transceiver circuit and the second transceiver circuit work at the same frequency and are used for respectively wirelessly communicating with an external device and simultaneously receiving signals of the external device; the first transceiver circuit is used for receiving and demodulating a signal of the external device to generate a first signal, and the second transceiver circuit is used for receiving and demodulating a signal of the external device to generate a second signal;the controller is configured to perform data verification on the first signal and the second signal to obtain a signal with normal information in the first signal and the second signal, and select the normal signal as a final signal obtained by the wireless communication device from the external device.
- The wireless communication device of claim 1, wherein the controller is further configured to send a message health signal to a remote monitoring center device.
- The wireless communication device of claim 1, wherein the controller is further configured to compare signal strengths of the first signal and the second signal when the first signal and the second signal are both normal signals, and to use a signal with a higher signal strength of the first signal and the second signal as a final signal obtained by the wireless communication device from the external device.
- The wireless communication device of claim 1, wherein the controller is further configured to skip the step of data checking if the first signal and the second signal are both abnormal signals; and comparing the signal strength of the first signal and the second signal, and taking the signal with higher signal strength in the first signal and the second signal as a final signal acquired by the wireless communication equipment from the external equipment.
- The wireless communication device of claim 1, wherein the first transceiver circuit comprises a first modem, a first radio frequency link, and a first antenna connected in sequence;the first antenna is used for receiving a signal sent by the external equipment; the first radio frequency link is at least used for filtering signals received by the first antenna; the first modem is configured to demodulate the filtered signal to obtain the first signal, and transmit the first signal to the controller.
- The wireless communication device of claim 1, wherein the second transceiver circuit comprises a second modem, a second radio frequency link, and a second antenna connected in sequence;the second antenna is used for receiving a signal sent by the external equipment; the second radio frequency link is at least used for filtering signals received by the second antenna; the second modem is configured to demodulate the filtered signal to obtain the second signal, and transmit the second signal to the controller.
- The wireless communication device of claim 1, wherein the controller is further configured to transmit a communication signal through the first transceiver circuit or the second transceiver circuit corresponding to the final signal.
- A monitoring device, comprising: the radio frequency antenna comprises a first antenna, a second antenna, a controller, a modem, a radio frequency link and a switch which are connected in sequence; wherein the switch is configured to selectively turn on the first antenna or the second antenna;the first antenna and the second antenna are used for respectively acquiring communication signals of wireless communication equipment when the first antenna and the second antenna are started;the radio frequency link is at least used for filtering communication signals received by the first antenna and the second antenna;the modem is used for demodulating the communication signals received by the first antenna and the second antenna to respectively generate a first communication signal and a second communication signal;the controller is configured to compare the demodulated first communication signal with the demodulated second communication signal to obtain a signal with a higher signal strength in the first communication signal and the second communication signal, and transmit and receive the signal through an antenna corresponding to the signal with the higher signal strength.
- The monitoring device of claim 8, further comprising a parameter acquisition component for acquiring parameter information of the target object, wherein the controller is further configured to use the parameter information and/or alarm information of the target object as signal content and generate a parameter signal via the modem; and the parameter signal is transmitted sequentially through the radio frequency link, the switch and the first antenna or the second antenna.
- The monitoring device of claim 8, wherein the distance between the first antenna and the second antenna is a quarter wavelength or a half wavelength.
- A wireless communication device for use in a wireless medical telemetry system, the wireless communication device comprising: the radio frequency antenna comprises a first antenna, a second antenna, a controller, a modem, a radio frequency link and a switch which are connected in sequence; wherein the switch is configured to selectively turn on the first antenna or the second antenna;the first antenna and the second antenna are used for respectively acquiring signals of external equipment when the antenna is turned on;the radio frequency link is at least used for filtering signals received by the first antenna and the second antenna;the modem is used for demodulating signals received by the first antenna and the second antenna to respectively generate a first signal and a second signal;the controller is configured to compare the demodulated first signal and the demodulated second signal to obtain a signal with a higher signal strength from the first signal and the second signal, and transmit and receive the signal through an antenna corresponding to the signal with the higher signal strength.
- The wireless communication device of claim 11, wherein the controller is further configured to transmit the received first signal or the second signal to a remote monitoring center device.
- The wireless communication device of claim 11, wherein the controller is further configured to transmit a communication signal, and wherein the modem is configured to modulate the communication signal to generate and transmit the communication signal via the antenna corresponding to the signal with the higher signal strength.
- A monitoring device, comprising: the device comprises a controller, a first transceiving circuit and a second transceiving circuit, wherein the first transceiving circuit and the second transceiving circuit are respectively connected with the controller;the first transceiver circuit and the second transceiver circuit work at the same frequency and are used for respectively wirelessly communicating with wireless communication equipment and simultaneously receiving signals of the wireless communication equipment; the first transceiver circuit is used for receiving and demodulating signals of the wireless communication equipment to generate first communication signals, and the second transceiver circuit is used for receiving and demodulating signals of the wireless communication equipment to generate second communication signals;the controller is configured to perform data verification on the first communication signal and the second communication signal to obtain a signal with normal information in the first communication signal and the second communication signal, and the signal is used as a final signal obtained by the monitoring device from the wireless communication device.
- The monitoring device of claim 14, wherein the controller is further configured to compare signal strengths of the first communication signal and the second communication signal when the first communication signal and the second communication signal are both normal signals, and to use the higher signal strength signal of the first communication signal and the second communication signal as a final signal obtained by the monitoring device from the wireless communication device.
- The monitoring device of claim 14, wherein the controller is further configured to skip the step of data checking if the first communication signal and the second communication signal are both abnormal signals; and comparing the signal strength of the first communication signal with that of the second communication signal, and taking the signal with higher signal strength in the first communication signal and the second communication signal as a final signal acquired by the monitoring device from the wireless communication device.
- The monitoring device of claim 14, wherein the first transceiver circuit comprises a first modem, a first radio frequency link, and a first antenna connected in series;the first antenna is used for receiving signals sent by external equipment; the first radio frequency link is at least used for filtering signals received by the first antenna; the first modem is configured to demodulate the filtered signal to obtain the first communication signal, and transmit the demodulated first communication signal to the controller.
- The monitoring device of claim 14, wherein the second transceiver circuit comprises a second modem, a second rf link, and a second antenna connected in series;the second antenna is used for receiving signals sent by external equipment; the second radio frequency link is at least used for filtering signals received by the second antenna; the second modem is configured to demodulate the filtered signal to obtain the second communication signal, and transmit the demodulated second communication signal to the controller.
- The monitoring device of claim 14, wherein the controller is further configured to transmit a signal through the first transceiver circuit or the second transceiver circuit corresponding to the final signal.
- A receiving method used in a wireless medical remote sensing system, the receiving method comprising:the method comprises the steps that signals of external equipment are received simultaneously through a first transceiver circuit and a second transceiver circuit which work at the same frequency;demodulating the received signal by the first transceiver circuit to obtain a first signal, and demodulating the received signal by the second transceiver circuit to obtain a second signal;and performing data verification on the first signal and the second signal to acquire a signal with normal information in the first signal and the second signal, and selecting the normal signal as a final signal acquired from the external equipment.
- The receiving method as claimed in claim 20, wherein the receiving method further comprises:comparing signal strengths of the first signal and the second signal when the first signal and the second signal are both normal signals;and taking the signal with higher signal strength in the first signal and the second signal as the final signal acquired from the external equipment.
- The receiving method as claimed in claim 20, wherein the receiving method further comprises:skipping the step of data verification when the first signal and the second signal are both abnormal signals;and comparing the signal strength of the first signal and the second signal, and taking the signal with higher signal strength in the first signal and the second signal as a final signal acquired by the wireless communication equipment from the external equipment.
- A receiving method used in a wireless medical remote sensing system, the receiving method comprising:respectively receiving signals of external equipment through a first antenna and a second antenna;processing the signal received by the first antenna to obtain a first signal, and processing the signal received by the second antenna to obtain a second signal;and comparing the signal strength of the first signal and the second signal to obtain a signal with higher signal strength in the first signal and the second signal, and transmitting and receiving the signal through an antenna corresponding to the signal with higher signal strength.
- A receiving method according to any one of claims 20 to 23, wherein the external device is from a wireless communication device or a monitoring device.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2019/130957 WO2021134708A1 (en) | 2019-12-31 | 2019-12-31 | Monitoring device, wireless communication device, and receiving method |
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| CN114175511A true CN114175511A (en) | 2022-03-11 |
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| CN201980098151.6A Pending CN114175511A (en) | 2019-12-31 | 2019-12-31 | Monitoring device, wireless communication device and receiving method |
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| WO2021134708A8 (en) | 2022-02-10 |
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