TWI833459B - Wireless communication circuit and transport device for sending rescue message - Google Patents

Abstract

A wireless communication circuit arranged in a transport device to send a rescue message to a cellular network, includes a radio transceiver, a signal amplifier circuit, multiple filters, and a first switch. The radio transceiver converts a baseband signal into an RF signal, and determines whether the cellular network has been connected. The first switch includes an input end and multiple output ends. The first switch is electrically connected between the signal amplifier circuit and the multiple filters. The first switch connects the input end and one of the output ends in sequence until the radio transceiver determines the cellular network has been connected.

Description

Wireless communication circuits and transportation devices used to send rescue information

The present invention relates to electronic devices, and in particular to wireless communication circuits and transportation devices for sending rescue information.

With the popularity of transportation devices (such as cars), the probability of car accidents will also become higher. How to get rescue quickly after a car accident is crucial for every driver and passenger. Although most cars are equipped with an SOS self-service rescue system, the number of antennas on the car is small. If the car is involved in a violent collision and the main antenna is damaged, the SOS self-service rescue system will be useless and will be fatal to rescuers. .

A wireless communication circuit according to an embodiment of the present disclosure is provided in a transportation device for sending a rescue message to a cellular network, including: a radio transceiver, a signal amplification circuit, a plurality of filters, and a first switch. The radio transceiver converts a baseband signal into a radio frequency signal and determines whether the cellular network has been connected. The signal amplifying circuit is electrically connected to the radio transceiver to amplify the radio frequency signal. Multiple filters filter the RF signal. The first switch includes an input terminal and a plurality of output terminals. The first switch is electrically connected between the signal amplification circuit and the plurality of filters. The first switch sequentially turns on the input terminal and one of the plurality of output terminals until the radio transceiver determines that the cellular network has been connected. The radio transceiver sends the rescue message through the first switch.

As in the above wireless communication circuit, the input end of the first switch is electrically connected to the signal amplifying circuit. Multiple output terminals of the first switch are electrically connected to multiple filters.

The above wireless communication circuit further includes a second switch; the second switch includes a second input terminal and a plurality of second output terminals. The second input terminal is electrically connected to one of the plurality of filters.

As in the above wireless communication circuit, when the first switch turns on the input terminal and another one of the plurality of output terminals, the second switch sequentially turns on the second input terminal and one of the plurality of second output terminals until the radio transceiver determines Connected to cellular network.

The above-mentioned wireless communication circuit further includes a baseband processor. The baseband processor converts a digital signal into a baseband signal and transmits the baseband signal to the radio transceiver.

Such as the above wireless communication circuit, in which the radio transceiver receives a satellite navigation system (Global Navigation Satellite System) signal and decodes the satellite navigation system signal to obtain the location information of the transportation device, wherein the radio transceiver transmits the transportation device The location information is loaded into the rescue message and the rescue message is sent.

As in the above wireless communication circuit, the transportation device includes a plurality of radio frequency antennas and a positioning antenna. A plurality of radio frequency antennas are electrically connected to a plurality of filters. The plurality of radio frequency antennas in another part are electrically connected to the plurality of second output terminals of the second switch.

As in the above wireless communication circuit, the radio transceiver receives a satellite navigation system signal through a positioning antenna.

As in the above wireless communication circuit, the transportation device includes a microcontroller and a sensing unit. When the transport device is impacted, the sensing unit sends a control signal to the microcontroller.

As in the above wireless communication circuit, the microcontroller sends a start command to the radio transceiver according to the control signal, so that the radio transceiver begins to determine whether the cellular network has been accessed.

As in the above wireless communication circuit, the plurality of filters are low-band (LB) filters, mid-high-band (MHB) filters, or ultra-high-band (UHB) filters.

A transportation device according to an embodiment of the present disclosure sends a rescue message to a cellular network during a collision, including a radio transceiver, a signal amplification circuit, a plurality of filters, a first switch, a second switch, and a plurality of a radio frequency antenna, a sensing unit, and a microcontroller. The radio transceiver converts a baseband signal into a radio frequency signal and determines whether the cellular network has been connected. The signal amplifying circuit is electrically connected to the radio transceiver to amplify the radio frequency signal. Multiple filters filter the RF signal. The first switch includes an input terminal and a plurality of output terminals. The first switch is electrically connected between the signal amplification circuit and the plurality of filters. The second switch includes a second input terminal and a plurality of second output terminals. The second input terminal is electrically connected to one of the plurality of filters. A plurality of radio frequency antennas are electrically connected to a plurality of filters. The plurality of radio frequency antennas in another part are electrically connected to the plurality of second output terminals of the second switch. The sensing unit senses whether a collision occurs in the transport device. The first switch sequentially turns on the input terminal and one of the plurality of output terminals until the radio transceiver determines that the cellular network has been connected. The radio transceiver transmits the rescue message through the first switch and one of the plurality of radio frequency antennas. When the transport device is hit by a collision, the sensing unit sends a control signal to the microcontroller, and the microcontroller sends a start command to the radio transceiver based on the control signal, so that the radio transceiver begins to determine whether the cellular network has been connected.

As in the above transportation device, when the first switch turns on the input terminal and another one of the plurality of output terminals, the second switch sequentially turns on the second input terminal and one of the plurality of second output terminals until the radio transceiver determines that the Access the cellular network. The radio transceiver transmits rescue information through the first switch, the second switch and another one of the plurality of radio frequency antennas.

As in the above transportation device, the input end of the first switch is electrically connected to the signal amplifier circuit. Multiple output terminals of the first switch are electrically connected to multiple filters.

The above-mentioned transportation device further includes: a baseband processor for converting a digital signal into a baseband signal and transmitting the baseband signal to the radio transceiver.

The above-mentioned transportation device further includes: a positioning antenna. The radio transceiver receives a satellite navigation system signal through the positioning antenna, and decodes the satellite navigation system signal to obtain the location information of the transportation device. The radio transceiver loads the location information of the transportation device into the rescue message and sends the rescue message.

Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numbers are used in the drawings and descriptions to refer to the same or similar parts.

Throughout this description and the appended claims, certain words are used to refer to specific elements. One of ordinary skill in the art will appreciate that manufacturers of electronic devices may refer to the same component by different names. This article is not intended to differentiate between components that have the same functionality but have different names. In the following description and claims, the words "include" and "include" are open-ended words, and therefore they should be interpreted to mean "includes but is not limited to...".

The directional terms mentioned in this article, such as: "up", "down", "front", "back", "left", "right", etc., are only for reference to the direction of the drawing. Accordingly, the directional terms used are illustrative and not limiting of the disclosure. In the drawings, each illustrates the general features of methods, structures, and/or materials used in particular embodiments. However, these drawings should not be interpreted as defining or limiting the scope or nature encompassed by these embodiments. For example, the relative sizes, thicknesses, and locations of various layers, regions, and/or structures may be reduced or exaggerated for clarity.

When one structure (or layer, component, or substrate) described in the present invention is located on/above another structure (or layer, component, or substrate), it may mean that the two structures are adjacent and directly connected, or they may Refers to the fact that two structures are adjacent rather than directly connected. Indirect connection means that there is at least one intermediary structure (or intermediary layer, intermediary component, intermediary substrate, or intermediary spacer) between two structures. The lower surface of one structure is adjacent to or directly connected to the upper surface of the intermediary structure, and the other is The upper surface of a structure is adjacent to or directly connected to the lower surface of the intermediary structure. The intermediary structure can be composed of a single-layer or multi-layer physical structure or a non-physical structure, and there is no limit. In this disclosure, when a structure is disposed "on" another structure, it may mean that the structure is "directly" on the other structure, or that the structure is "indirectly" on the other structure, that is, between the structure and the other structure. At least one structure is also sandwiched.

The terms "about", "equal to", "equal" or "the same", "substantially" or "substantially" are generally interpreted to mean within 20% of a given value or range, or to mean within a given value or range. Within 10%, 5%, 3%, 2%, 1% or 0.5% of the value or range.

The ordinal numbers used in the description and claims, such as "first", "second", etc., are used to modify elements. They do not themselves imply or represent that the element (or elements) have any previous ordinal numbers, nor do they mean that the element(s) have any previous ordinal numbers. It does not represent the order of one element with another element, or the order of the manufacturing method. The use of these numbers is only used to clearly distinguish an element with a certain name from another element with the same name. The claims and the description may not use the same words. Accordingly, the first component in the description may be the second component in the claim.

The electrical connection or coupling described in the present invention can refer to direct connection or indirect connection. In the case of direct connection, the end points of the components on the two circuits are directly connected or connected to each other with a conductor line segment, and in the indirect connection In the case of , there are switches, diodes, capacitors, inductors, resistors, other suitable components, or combinations of the above components between the end points of the components on the two circuits, but are not limited to this.

In the present invention, the thickness, length and width can be measured using an optical microscope, and the thickness or width can be measured using cross-sectional images in an electron microscope, but are not limited to this. In addition, any two values or directions used for comparison may have certain errors. In addition, the terms "equal to", "equal", "the same", "substantially" or "substantially" mentioned in the present invention generally mean falling within 10% of a given value or range. In addition, the terms "the given range is the first value to the second value" and "the given range falls within the range of the first value to the second value" mean that the given range includes the first value, the second value and their other values in between. If the first direction is perpendicular to the second direction, the angle between the first direction and the second direction may be between 80 degrees and 100 degrees; if the first direction is parallel to the second direction, the angle between the first direction and the second direction may be between 80 degrees and 100 degrees. The angle between directions can be between 0 and 10 degrees.

It should be noted that the following embodiments can be replaced, reorganized, and mixed with features of several different embodiments to complete other embodiments without departing from the spirit of the present disclosure. Features in various embodiments may be mixed and matched as long as they do not violate the spirit of the invention or conflict with each other.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted to have a meaning consistent with the relevant technology and the background or context of the present disclosure, and should not be interpreted in an idealized or overly formal manner. Unless otherwise defined in the embodiments of this disclosure.

Figure 1 is a schematic diagram of a wireless communication circuit 100 according to an embodiment of the present invention. As shown in Figure 1, the wireless communication circuit 100 includes a radio transceiver 102, a signal amplification circuit 104, a first switch 106, a plurality of filters (for example, filter 108-1, filter 108-2, filter 108-3, and filter 108-4), a second switch 110, a plurality of Surface Acoustic Wave (SAW) filters (for example, SAW filter 122-1 and SAW filter 122-2), A low noise amplifier (LNA) 124, and a baseband processor 114. In some embodiments, the radio transceiver 102 is electrically connected between the baseband processor 114 and the signal amplification circuit 104 . The radio transceiver 102 converts a baseband signal from the baseband processor 114 into a radio frequency signal, and sends the radio frequency signal out (for example, through radio frequency antennas 112-1, 112-2, 112-3, 112-4, 112-5). Similarly, in some embodiments, the radio transceiver 102 can convert the received radio frequency signal into a base frequency signal for subsequent processing by the base frequency processor 114 . In some embodiments, the radio transceiver 102 may determine whether a cellular network has been accessed.

In some embodiments, the cellular network is, for example, a 5G New Radio network, but the invention is not limited thereto. The radio transceiver 102 accesses the cellular network through a base station (eg, a gNB). In some embodiments, the radio transceiver 102 can determine whether it has accessed the cellular network by receiving a confirmation command from the cellular network, but the invention is not limited thereto. In some embodiments, the signal amplifying circuit 104 is electrically connected between the radio transceiver 102 and the first switch 106 . The signal amplification circuit 104 is used to amplify the radio frequency signal. For example, the signal amplifying circuit 104 can amplify the radio frequency signal output from the radio transceiver 102, and can also amplify the radio frequency signal received through the radio frequency antennas 112-1, 112-2, 112-3, 112-4, 112-5. RF signal amplification. In some embodiments, the signal amplification circuit 104 is used to amplify radio frequency signals in a specific frequency band. For example, the signal amplification circuit 104 can amplify radio frequency signals in the low frequency band (LB), mid-high frequency band (MHB), or ultra-high frequency band (UHB), but the invention is not limited thereto.

In some embodiments, the first switch 106 includes an input terminal and four output terminals, but the invention is not limited thereto. The first switch 106 is electrically connected between the signal amplification circuit 104 and the plurality of filters. The input terminal of the first switch 106 is electrically connected to the signal amplifier circuit 104 . The output end of the first switch 106 is electrically connected to the filter 108-1, the filter 108-2, the filter 108-3, and the filter 108-4 respectively. In some embodiments, the filter 108-1 is electrically connected between the first output terminal of the first switch 106 and the radio frequency antenna 112-1. The filter 108-2 is electrically connected between the second output terminal of the first switch 106 and the radio frequency antenna 112-2. The filter 108-3 is electrically connected between the third output terminal of the first switch 106 and the radio frequency antenna 112-3. The filter 108-4 is electrically connected between the first switch 106 and the second switch 110.

In some embodiments, the first switch 106 sequentially turns on its input terminal and one of its plurality of output terminals until the radio transceiver 102 determines that it has connected to the cellular network. For example, when the radio transceiver 102 starts paging with the base station to establish a connection, the first switch 106 first turns on its input terminal and its first output terminal. In other words, the radio transceiver 102 first attempts to establish a connection with the cellular network through the radio frequency antenna 112-1. When the radio transceiver 102 determines that it cannot establish a connection with the cellular network through the radio frequency antenna 112-1, the first switch 106 then turns on its input terminal and its second output terminal. In other words, the radio transceiver 102 then attempts to establish a connection with the cellular network through the radio frequency antenna 112-2. When the radio transceiver 102 determines that it cannot establish a connection with the cellular network through the radio frequency antenna 112-2, the first switch 106 then turns on its third input terminal and its third output terminal. In other words, the radio transceiver 102 then attempts to establish a connection with the cellular network through the radio frequency antenna 112-3. Afterwards, the first switch 106 can conduct its input terminal and one of its output terminals until the radio transceiver 102 determines that the cellular network has been connected.

Similarly, the second switch 110 includes an input terminal and two output terminals. The input end of the second switch 110 is electrically connected to the filter 108-4. The first output terminal of the second switch 110 is electrically connected to the radio frequency antenna 112-4. The second output terminal of the second switch 110 is electrically connected to the radio frequency antenna 112-5. When the first switch 106 turns on its input terminal and its fourth output terminal, the second switch 110 first turns on its input terminal and its first output terminal. In other words, the radio transceiver 102 then attempts to establish a connection with the cellular network through the radio frequency antenna 112-4. When the radio transceiver 102 determines that it cannot establish a connection with the cellular network through the radio frequency antenna 112-4, the second switch 110 then turns on its input terminal and its second output terminal. In other words, the radio transceiver 102 then attempts to establish a connection with the cellular network through the radio frequency antenna 112-5. Afterwards, when the first switch 106 turns on its input terminal and one of its plurality of output terminals that is electrically connected to the filter 108-4, the second switch 110 sequentially turns on its input terminal and one of its plurality of second output terminals. One of the radio frequency antennas 112-4 or 112-5 is electrically connected until the radio transceiver 102 determines that it has connected to the cellular network. In some embodiments, the wireless communication circuit 100 is disposed in a transportation device (such as a car), but the invention is not limited thereto. Therefore, the radio frequency antennas 112-1, 112-2, 112-3, 112-4, and 112-5 are arranged at different positions in the transportation device.

For example, the radio frequency antenna 112-1 is disposed in the front bumper of the transportation device. The radio frequency antenna 112-2 is installed in the rear bumper of the transportation device. The radio frequency antenna 112-3 is installed in the left rear mirror of the transportation device. The radio frequency antenna 112-4 is installed in the right side rear mirror of the transportation device. The radio frequency antenna 112-5 is installed in the roof of the transportation device. The present invention does not limit the number of radio frequency antennas. When the number of radio frequency antennas is greater, through the switching of the first switch 106 and the second switch 110, the radio transceiver 102 has a higher chance of establishing a connection with the cellular network through one of the groups of radio frequency antennas. connection, so that the radio transceiver 102 can send a rescue message through the first switch 106 and the radio frequency antenna.

In some embodiments, the radio transceiver 102 receives a Global Navigation Satellite System signal through a radio frequency antenna 120 and decodes the satellite navigation system signal to obtain the location information of the transportation device. The radio frequency antenna 120 may be, for example, a positioning antenna, but the invention is not limited thereto. The radio transceiver 102 loads the location information of the transportation device into the rescue information and sends the rescue information. In some embodiments, the surface acoustic wave filter 122-1 is electrically connected between the low-noise amplifier 124 and the radio frequency antenna 120. The low-noise amplifier 124 is electrically connected between the surface acoustic wave filter 122-1 and the surface acoustic wave filter 122-2. The surface acoustic wave filter 122-2 is electrically connected between the radio transceiver 102 and the low-noise amplifier 124. Surface acoustic wave filters 122-1 and 122-2 are used to filter satellite navigation system signals. The low noise amplifier 124 is used to amplify the satellite navigation system signal.

In some embodiments, the microcontroller 116 is provided in a vehicle-mounted system in the transportation device, but the invention is not limited thereto. The sensing unit 118 is provided in the transportation device, but the invention is not limited thereto. In some embodiments, when the transportation device is impacted, the sensing unit 118 sends a control signal to the microcontroller 116 . The microcontroller 116 sends a start command to the radio transceiver 102 according to the control signal, so that the radio transceiver 102 begins to determine whether the cellular network has been accessed.

Figure 2 is a schematic diagram of a wireless communication circuit 200 according to an embodiment of the present invention. As shown in Figure 2, the wireless communication circuit 200 includes a radio transceiver 202, a low-band signal amplification circuit 204-1, a mid- and high-band signal amplification circuit 204-2, an ultra-high-band signal amplification circuit 204-3, A switch 206-1, a switch 206-2, a switch 206-3, a filter 208-1, a filter 208-2, a filter 208-3, a filter 208-4, and a switch 220 . In some embodiments, radio transceiver 202 may convert baseband signals to radio frequency signals. In some embodiments, the low-frequency band signal amplification circuit 204-1 is used to amplify the low-frequency band radio frequency signal. The mid- and high-frequency band signal amplification circuit 204-2 is used to amplify the mid- and high-frequency band radio frequency signals. The ultra-high frequency band signal amplification circuit 204-3 is used to amplify ultra-high frequency band radio frequency signals. The low-frequency signal amplifying circuit 204-1 is electrically connected between the radio transceiver 202 and the switch 206-1. The mid- and high-frequency band signal amplification circuit 204-2 is electrically connected between the radio transceiver 202 and the switch 206-2. The ultra-high frequency band signal amplification circuit 204-3 is electrically connected between the radio transceiver 202 and the switch 206-3.

The switch 206-1 includes an input terminal and four output terminals. The input end of the switch 206-1 is electrically connected to the low-frequency band signal amplifying circuit 204-1. The first output terminal of the switch 206-1 is electrically connected to the filter 208-1, the second output terminal of the switch 206-1 is electrically connected to the filter 208-2, and the third output terminal of the switch 206-1 is electrically connected to the filter. 208-3, and the fourth output terminal of the switch 206-1 is electrically connected to the filter 208-4. The switch 206-2 includes an input terminal and four output terminals. The input end of the switch 206-2 is electrically connected to the mid- and high-frequency band signal amplification circuit 204-2. The first output terminal of the switch 206-2 is electrically connected to the filter 208-1, the second output terminal of the switch 206-2 is electrically connected to the filter 208-2, and the third output terminal of the switch 206-2 is electrically connected to the filter. 208-3, and the fourth output terminal of the switch 206-2 is electrically connected to the filter 208-4. Similarly, switch 206-3 includes one input terminal and four output terminals. The input end of the switch 206-3 is electrically connected to the ultra-high frequency band signal amplifying circuit 204-3. The first output terminal of the switch 206-3 is electrically connected to the filter 208-1, the second output terminal of the switch 206-3 is electrically connected to the filter 208-2, and the third output terminal of the switch 206-3 is electrically connected to the filter. 208-3, and the fourth output terminal of the switch 206-3 is electrically connected to the filter 208-4.

In some embodiments, filter 208-1, filter 208-2, filter 208-3, and filter 208-4 each include a low-band (LB) filter (not shown), a mid-high-band (MHB) filter (not shown), and an ultra-high-band (UHB) filter (not shown). The filter 208-1 is electrically connected to the radio frequency antenna 212-1. The filter 208-2 is electrically connected to the radio frequency antenna 212-2. The filter 208-3 is electrically connected to the radio frequency antenna 212-3. The switch 220 includes an input terminal and two output terminals. The input end of the switch 220 is electrically connected to the filter 208-4. The first output terminal of the switch 220 is electrically connected to the radio frequency antenna 212-4. The second output terminal of the switch 220 is electrically connected to the radio frequency antenna 212-5. In some embodiments, the wireless communication circuit 200 is disposed in a transportation device (such as a car), but the invention is not limited thereto. In some embodiments, radio frequency antennas 212-1, 212-2, 212-3, 212-4, and 212-5 are disposed at different locations in the transportation device. For example, the radio frequency antenna 212-1 is disposed in the front bumper of the transportation device. The radio frequency antenna 212-2 is installed in the rear bumper of the transportation device. The radio frequency antenna 212-3 is installed in the left rear mirror of the transportation device. The radio frequency antenna 212-4 is installed in the right side rear mirror of the transportation device. The radio frequency antenna 212-5 is installed in the roof of the transportation device.

In some embodiments, assuming that the radio transceiver 202 intends to establish a connection with the cellular network using mid- and high-band radio frequency signals, the switch 206-2 first electrically connects its input terminal to its first output terminal. In other words, the radio transceiver 202 attempts to establish a connection with the cellular network through the radio frequency antenna 212-1. When the radio transceiver 202 cannot establish a connection with the cellular network through the radio frequency antenna 212-1, the switch 206-2 then electrically connects its input terminal to its second output terminal. In other words, the radio transceiver 202 attempts to establish a connection with the cellular network through the radio frequency antenna 212-2. When the radio transceiver 202 cannot establish a connection with the cellular network through the radio frequency antenna 212-2, the switch 206-2 then electrically connects its input terminal to its third output terminal. In other words, the radio transceiver 202 attempts to establish a connection with the cellular network through the radio frequency antenna 212-3.

When the radio transceiver 202 cannot establish a connection with the cellular network through the radio frequency antenna 212-3, the switch 206-2 electrically connects its input terminal to its fourth output terminal, and the switch 220 electrically connects its input terminal to its third output terminal. An input terminal. In other words, the radio transceiver 202 attempts to establish a connection with the cellular network through the radio frequency antenna 212-4. When the radio transceiver 202 cannot establish a connection with the cellular network through the radio frequency antenna 212-4, the switch 206-2 electrically connects its input terminal to its fourth output terminal, and the switch 220 electrically connects its input terminal to its third output terminal. Two input terminals. In other words, the radio transceiver 202 attempts to establish a connection with the cellular network through the radio frequency antenna 212-5. Assuming that the radio transceiver 202 can establish a connection with the cellular network through the radio frequency antenna 212-5, the radio transceiver 202 sends rescue information to the cellular network through the first switch 206-2, the second switch 220, and the radio frequency antenna 212-5. .

In some embodiments, the low-frequency band signal amplification circuit 204-1, the mid- and high-frequency band signal amplification circuit 204-2, and the ultra-high-frequency band signal amplification circuit 204-3 are respectively provided in an independent chip. In some embodiments, the switch 206-1 may be partially or entirely disposed in the independent chip including the low-frequency band signal amplification circuit 204-1, but the invention is not limited thereto. Similarly, the switch 206-2 may be partially or entirely disposed in the independent chip including the mid- and high-frequency band signal amplification circuit 204-2. The switch 206-3 may be partially or entirely disposed in the independent chip including the ultra-high frequency band signal amplification circuit 204-3.

The wireless communication circuits 100 and 200 of the present invention can realize automatic multi-channel selection of cellular network antenna routes under emergency conditions, thereby improving the efficiency of accident rescue and greatly increasing the probability of successful rescue. The wireless communication circuits 100 and 200 of the present invention can be applied to various emergency rescue systems, live wireless signal broadcast systems, unmanned driving systems and various systems that need to ensure the safety of wireless signals. The wireless communication circuits 100 and 200 of the present invention take 5-way antennas as an example, and can realize the selection of more paths in principle.

Although the embodiments of the present disclosure are described above, it should be understood that what is presented above is only an example and not a limitation. Many changes to the above-described exemplary embodiments according to this embodiment can be implemented without violating the spirit and scope of the disclosure. Therefore, the breadth and scope of the present disclosure should not be limited by the above-described embodiments. Rather, the scope of the present disclosure should be defined by the following patent claims and their equivalents. Although the above disclosure has been illustrated and described in one or more related implementations, equivalent changes and modifications will occur to others familiar with the art in light of the above specifications and drawings. Furthermore, although a particular feature of the present disclosure may be illustrated by one of the associated implementations, the above feature may be combined with one or more other features that may be required and facilitated in any known or particular application. .

The technical terms used in this specification are for the purpose of describing particular embodiments only and are not intended to be used as limitations of the disclosure. Unless the context clearly indicates otherwise, if the singular form is used herein, 1. This and the foregoing shall also include the plural form. Furthermore, the words "include", "include", "(have, have) have", "have", or variations thereof are used either as detailed descriptions or as the scope of the patent application. The above word means to include, and to some extent is equivalent to the word "include". Unless otherwise defined, all terms used herein (including technical or scientific terms) can be generally understood by a person with ordinary skill in the art disclosed above. We should be more aware that the above terms, as defined in commonly used dictionaries, should be interpreted to have the same meaning in the context of the relevant technology. Unless expressly defined herein, the above terms are not to be construed in an idealistic or overly formal sense.

100: Wireless communication circuit

102:Radio transceiver

104: Signal amplifier circuit

106:First switch

108-1,108-2,108-3,108-4: Filter

110: Second switch

112-1,112-2,112-3,112-4,112-5: RF antenna

114: Baseband processor

116:Microcontroller

118: Sensing unit

120:RF antenna

122-1,122-2: Surface acoustic wave filter

124:Low noise amplifier

200:Wireless communication circuit

202:Radio transceiver

204-1: Low frequency band signal amplification circuit

204-2: Medium and high frequency band signal amplification circuit

204-3:Ultra high frequency band signal amplification circuit

206-1:Switch

206-2:Switch

206-3:Switch

208-1: Filter

208-2: Filter

208-3: Filter

208-4: Filter

212-1, 212-2, 212-3, 212-4, 212-5: RF antenna

220: switch

Figure 1 is a schematic diagram of a wireless communication circuit 100 according to an embodiment of the present invention. Figure 2 is a schematic diagram of a wireless communication circuit 200 according to an embodiment of the present invention.

100: Wireless communication circuit

102:Radio transceiver

104: Signal amplifier circuit

106:First switch

108-1,108-2,108-3,108-4: Filter

110: Second switch

112-1,112-2,112-3,112-4,112-5: RF antenna

114: Baseband processor

116:Microcontroller

118: Sensing unit

120:RF antenna

122-1,122-2: Surface acoustic wave filter

124:Low noise amplifier

Claims (16)

A wireless communication circuit, installed in a transportation device, used to send a rescue message to a cellular network, including: a radio transceiver, used to convert a base frequency signal into a radio frequency signal, and determine whether the access point is connected to the radio frequency signal. Cellular network; a signal amplification circuit electrically connected to the radio transceiver for amplifying the radio frequency signal; a plurality of filters for filtering the radio frequency signal; and a first switch including an input end and A plurality of output terminals; the first switch is electrically connected between the signal amplifier circuit and the filters; wherein the first switch sequentially conducts one of the input terminal and the output terminals until the radio transceiver It is determined that the cellular network has been connected; the radio transceiver sends the rescue information through the first switch. The wireless communication circuit as claimed in claim 1, wherein the input terminal of the first switch is electrically connected to the signal amplifier circuit; the output terminals of the first switch are electrically connected to the filters. The wireless communication circuit as claimed in claim 1, further comprising: a second switch including a second input terminal and a plurality of second output terminals; wherein the second input terminal is electrically connected to one of the filters . The wireless communication circuit as claimed in claim 3, wherein when the first switch turns on the other of the input terminal and the output terminals, the second switch turns on the second input terminal and the second output terminals in sequence. one, until the radio transceiver determines that it has Access the cellular network. The wireless communication circuit as claimed in claim 1 further includes: a baseband processor for converting a digital signal into the baseband signal and transmitting the baseband signal to the radio transceiver. The wireless communication circuit of claim 1, wherein the radio transceiver receives a Global Navigation Satellite System signal and decodes the satellite navigation system signal to obtain the location information of the transportation device, wherein , the radio transceiver loads the location information of the transportation device into the rescue information, and sends the rescue information. The wireless communication circuit as described in claim 3, wherein the transportation device includes a plurality of radio frequency antennas and a positioning antenna; some of the radio frequency antennas are electrically connected to the filters; another part of the radio frequency antennas are electrically connected to the second output terminals of the second switch. The wireless communication circuit as claimed in claim 7, wherein the radio transceiver receives a satellite navigation system signal through the positioning antenna. The wireless communication circuit of claim 1, wherein the transportation device includes a microcontroller and a sensing unit; when the transportation device is impacted, the sensing unit sends a control signal to the microcontroller. The wireless communication circuit of claim 9, wherein the microcontroller sends a start command to the radio transceiver according to the control signal, so that the radio transceiver starts to determine whether the cellular network has been accessed. The wireless communication circuit as claimed in claim 1, wherein a plurality of filters The filter is a low-band (LB) filter, a mid-high-band (MHB) filter, or an ultra-high-band (UHB) filter. A transportation device that sends a rescue message to a cellular network in the event of a collision, including: a radio transceiver for converting a base frequency signal into a radio frequency signal and determining whether the cellular network has been accessed; a signal an amplifier circuit electrically connected to the radio transceiver for amplifying the radio frequency signal; a plurality of filters for filtering the radio frequency signal; a first switch including an input terminal and a plurality of output terminals; A switch is electrically connected between the signal amplifier circuit and the filters; a second switch includes a second input terminal and a plurality of second output terminals; the second input terminal is electrically connected to the filters. One; a plurality of radio frequency antennas; some of the radio frequency antennas are electrically connected to the filters; the other part of the radio frequency antennas are electrically connected to the second output terminals of the second switch; a sensing unit , sensing whether the transportation device collides; and a microcontroller; wherein the first switch sequentially conducts one of the input terminal and the output terminal until the radio transceiver determines that it has been connected to the cellular network, The radio transceiver sends the rescue information through one of the first switch and the radio frequency antennas; wherein, when the transportation device is collided, the sensing unit sends a control signal to The microcontroller sends a start command to the radio transceiver according to the control signal, so that the radio transceiver starts to determine whether the cellular network has been accessed. The transportation device of claim 12, wherein when the first switch turns on the other of the input terminal and the output terminals, the second switch turns on the second input terminal and one of the second output terminals in sequence. Or, until the radio transceiver determines that it has been connected to the cellular network; the radio transceiver sends the rescue information through the other one of the first switch, the second switch and the radio frequency antennas. The transportation device of claim 12, wherein the input terminal of the first switch is electrically connected to the signal amplifier circuit; the output terminals of the first switch are electrically connected to the filters. The transportation device of claim 12, further comprising: a baseband processor for converting a digital signal to the baseband signal and transmitting the baseband signal to the radio transceiver. The transportation device of claim 12 further includes: a positioning antenna; the radio transceiver receives a satellite navigation system signal through the positioning antenna, and decodes the satellite navigation system signal to obtain the location information of the transportation device ; Wherein, the radio transceiver loads the location information of the transportation device into the rescue information, and sends the rescue information.

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