Wireless redundant sensor

Abstract

This invention discloses a wireless redundant sensor, including a sensing module and a control module. The sensing module includes a bracket and a first sensor chip. The control module includes a control panel, a controller mounted on the control panel, and a wireless transmission module. The first sensor chip is connected to the control panel via a first metal terminal. The controller is configured to process the sensing signal from the first sensor chip and send the processed sensing signal to the wireless transmission module, so that the wireless transmission module transmits the signal to a vehicle controller. The redundant sensor of this invention can process the sensing signal and transmit it wirelessly to the vehicle controller, reducing the use of wiring harnesses, lowering the overall vehicle cost, and ensuring that signal transmission is unaffected by dynamic areas, minimizing the risk of signal interruption, thus improving the reliability and stability of the redundant sensor.

Description

Technical Field

[0001] This invention relates to the field of vehicle sensor technology, and in particular to a wireless redundant sensor. Background Technology

[0002] Sensors are crucial sensing devices in vehicles. Different sensors detect different data; for example, wheel speed sensors monitor vehicle speed, acceleration sensors monitor changes in speed, height sensors monitor changes in the vehicle's chassis, and distance sensors monitor the distance between the vehicle and its surroundings. With the rapid development of assisted driving and autonomous driving, the role of sensors as the vehicle's "eyes" has become particularly important. Errors or inaccuracies in the acquired data can easily lead to incorrect judgments by the vehicle control system, resulting in flawed driving strategies and compromising vehicle safety. Therefore, these sensors must meet requirements for reliability and stability.

[0003] In addition, existing sensing devices are usually connected to the vehicle via wiring harnesses. Wiring harnesses require space for wiring and are prone to problems such as breakage and failure, which cannot meet the safety requirements of assisted driving or autonomous driving applications. Summary of the Invention

[0004] The purpose of this invention is to propose a wireless redundant sensor, which adds a controller and a wireless transmission module, thereby improving signal processing capabilities and enabling wireless communication to meet the safety requirements of assisted driving or autonomous driving.

[0005] According to a first aspect of the present invention, a wireless redundant sensor is provided, including a sensing module and a control module. The sensing module includes a bracket and a first sensor chip mounted on the bracket. The control module includes a control panel and a controller and a wireless transmission module disposed on the control panel. The first sensor chip is connected to the control panel through a first metal terminal.

[0006] The controller is configured to process the sensing signal from the first sensor chip and send the processed sensing signal to the wireless transmission module, so that the wireless transmission module transmits the signal to the vehicle controller.

[0007] A further improvement of the wireless redundancy sensor of the present invention is that the sensing module further includes a second sensor chip, the second sensor chip being connected to the control panel via a second metal terminal, and the first sensor chip and the second sensor chip being arranged side by side or stacked.

[0008] A further improvement of the wireless redundant sensor of the present invention is that the control module further includes a signal processing module. The input terminal of the signal processing module is connected to the first sensor chip and the second sensor chip respectively, and the output terminal of the signal processing module is connected to the controller. The controller is used to transmit the sensing signal processed by the signal processing module to the vehicle controller through the wireless transmission module.

[0009] A further improvement of the wireless redundant sensor of the present invention is that the control module further includes a power module disposed on the control panel. The power module is electrically connected to each device on the control panel, and the power module is also connected to the first sensor chip and the second sensor respectively, thereby supplying power to the first sensor chip and the second sensor chip.

[0010] A further improvement of the wireless redundancy sensor of the present invention is that the wireless transmission module includes a wireless signal processing unit and a transmitting antenna, the input terminal of the wireless signal processing unit is connected to the controller, and the output terminal of the wireless signal processing unit is connected to the transmitting antenna.

[0011] A further improvement of the wireless redundancy sensor of the present invention is that the controller is a CPLD chip.

[0012] A further improvement of the wireless redundancy sensor of the present invention is that the wireless redundancy sensor further includes a sensor housing and a main housing, the sensor housing is fixed to the main housing, the first sensor chip, the second sensor chip, the bracket, the first metal terminal and the second metal terminal are all disposed in the sensor housing, and the control panel is disposed in the main housing.

[0013] A further improvement of the wireless redundancy sensor of the present invention is that the main housing is box-shaped and the sensor housing is column-shaped.

[0014] A further improvement of the wireless redundancy sensor of the present invention is that the wireless redundancy sensor further includes a mounting portion disposed on the sensor housing, the mounting portion including a connecting arm and a mounting hole disposed on the connecting arm, the connecting arm extending along the thickness direction of the main housing.

[0015] A further improvement of the wireless redundancy sensor of the present invention is that both the first sensor chip and the second sensor chip are wheel speed sensor chips.

[0016] The redundant sensor provided by this invention adds a control module to the sensing module. The control module also includes a wireless transmission module. This allows the sensing signal to be processed and transmitted to the vehicle controller wirelessly, reducing the use of wiring harnesses, lowering the overall vehicle cost, and ensuring that the signal transmission is not affected by dynamic areas, thus reducing the risk of signal interruption and improving the reliability and stability of the redundant sensor. Attached Figure Description

[0017] The present invention will now be described in detail with reference to the accompanying drawings and exemplary embodiments, wherein:

[0018] Figure 1 This diagram illustrates the structure of a wireless redundancy sensor according to an embodiment of the present invention.

[0019] Figure 2 An exploded view of a wireless redundancy sensor provided in an embodiment of the present invention is shown;

[0020] Figure 3 This diagram shows a schematic representation of the structure of a sensing module according to an embodiment of the present invention.

[0021] Figure 4 This diagram shows a structural block diagram of a wireless redundancy sensor provided in an embodiment of the present invention.

[0022] Figure 5 This diagram illustrates the structure of a wireless redundancy sensor according to yet another embodiment of the present invention.

[0023] Figure 6 An exploded view of a wireless redundancy sensor provided in another embodiment of the present invention is shown;

[0024] Figure 7 This diagram illustrates the structure of a wireless redundancy sensor according to another embodiment of the present invention.

[0025] Figure 8 An exploded view of a wireless redundancy sensor provided in another embodiment of the present invention is shown.

[0026] The accompanying drawings are merely illustrative and not necessarily drawn to scale. Furthermore, they only show those parts necessary to illustrate the invention, while other parts may be omitted or simply mentioned. That is, the invention may include other parts besides those shown in the drawings. Detailed Implementation

[0027] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention is presented in conjunction with preferred embodiments, this does not mean that the features of the invention are limited to these embodiments. On the contrary, the purpose of describing the invention in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of the present invention. To provide a deep understanding of the invention, many specific details will be included in the following description. The invention may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of the invention, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0028] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this embodiment, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0030] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0031] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0032] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0033] Figure 1 This diagram illustrates the structure of a wireless redundancy sensor according to an embodiment of the present invention. Figure 2 An exploded view of a wireless redundancy sensor provided in an embodiment of the present invention is shown; Figure 3This diagram shows a schematic representation of the structure of a sensing module according to an embodiment of the present invention. Figure 4 This diagram shows a structural block diagram of a wireless redundancy sensor provided in an embodiment of the present invention. Figure 5 This diagram illustrates the structure of a wireless redundancy sensor according to another embodiment of the present invention.

[0034] Reference Figures 1 to 5 The wireless redundant sensor 100 of this embodiment includes a sensing module 10 and a control module 20. The sensing module 10 is used to detect sensing signals, and the control module 20 is used to process the sensing signals.

[0035] In one embodiment, the sensing module 10 includes a bracket 11 and a first sensor chip 13 mounted on the bracket 11. The bracket 11 has a receiving slot 12 that matches the first sensor chip 13. The control module 20 includes a control panel 21, a controller 22, and a wireless transmission module 23 disposed on the control panel 21. The first sensor chip 13 is connected to the control panel 21 via a first metal terminal 131 to enable communication between the first sensor chip 13 and the control panel 21.

[0036] The controller 22 is configured to process the sensing signal from the first sensor chip 13 and send the processed sensing signal to the wireless transmission module 23, so that the wireless transmission module 23 can transmit it to the vehicle controller. Specifically, the controller 22 is used to convert the pulse signal of the first sensor chip 13 into a digital signal and transmit it to the vehicle controller through the wireless transmission module 23, so that the vehicle controller can further analyze the digital signal to obtain the signal collected by the first sensor chip 13. In the embodiments of the present invention, the controller 22 is a CPLD chip, and the logic function can be constructed according to requirements. The vehicle controller can be a domain controller, an ABS (Antilock Brake System) controller, or an ESP (Electronic Stability Program) controller; no specific limitation is made here, and any controller applied in a vehicle is applicable.

[0037] Furthermore, the sensing module 10 also includes a second sensor chip 14, which is connected to the control panel 21 via a second metal terminal 141 to enable communication between the second sensor chip 14 and the control panel 21. This achieves a dual redundancy configuration, thereby ensuring the stability of the sensing signal acquired by the sensing chip.

[0038] The control module 20 also includes a signal processing module 15, which processes the sensing signals from the first sensor chip 13 and the second sensor chip 14. The input terminals of the signal processing module 15 are connected to the first sensor chip 13 and the second sensor chip 14, respectively, and the output terminal is connected to the controller 22. The controller 22 transmits the processed sensing signals from the signal processing module 15 to the vehicle controller via a wireless transmission module 23. At the vehicle end, a corresponding wireless receiving module is provided, and the vehicle controller is connected to the wireless receiving module to receive the sensing signals. Furthermore, the signal processing module 15 may also include filters and comparators for processing the sensing signals.

[0039] In one embodiment of the present invention, both the first sensor chip 13 and the second sensor chip 14 are wheel speed sensor chips used to acquire wheel speed signals of the vehicle. The first sensor chip 13 and the second sensor chip 14 are arranged side-by-side or stacked. Of course, the first sensor chip 13 and the second sensor chip 14 can also be different types of sensors, such as a combination of a wheel speed sensor and an acceleration sensor.

[0040] In the application scenario where both the first sensor chip 13 and the second sensor chip 14 are wheel speed sensor chips, the signal processing module 15 analyzes the wheel speed pulse signals sensed by the two wheel speed sensor chips, converts the pulse signals into pulse time and pulse quantity, etc. The signal processing module 15 generates corresponding digital signals according to the pulse time and pulse quantity, and transmits the digital signals to the vehicle controller through the wireless transmission module 23.

[0041] The control module 20 of the present invention also includes a power module 24 disposed on the control panel 21. The power module 24 is electrically connected to various devices on the control panel 21 to provide power to these devices, including the signal processing module 15, the controller 22, and the wireless transmission module 23. The power module 24 is also connected to the first sensor chip 13 and the second sensor chip 14, respectively, thereby providing power to both the first sensor chip 13 and the second sensor chip 14.

[0042] Furthermore, such as Figures 1 to 4 Combination Figure 6 The control module 20 also includes a signal detection module 25 disposed on the control panel 21. This signal detection module 25 can be one or more different types of sensors, thus enabling the wireless redundant sensor 100 to integrate different types of sensors and possess multi-sensor data detection capabilities. Specifically, the signal detection module 25 includes one or more of an accelerometer, a road noise cancellation sensor, and a height sensor. The power supply module 24 is also connected to the signal detection module 25 to supply power to it.

[0043] In an embodiment of the present invention, refer again Figures 1 to 5 The controller 22 is configured to receive wheel speed sensing signals from the first sensor chip 13 and the second sensor chip 14, as well as detection signals from the signal detection module 25, and process them respectively before sending them to the wireless transmission module 23. This allows the wireless transmission module 23 to transmit the data to the vehicle controller, enabling the vehicle controller to acquire various sensing data and enhancing the functionality of the wireless redundant sensor 100. Furthermore, the integrated design reduces the number of sensors installed on the vehicle, optimizing the vehicle's architecture.

[0044] The wireless transmission module 23 of this invention includes a wireless signal processing unit 231 and a transmitting antenna 232. A power supply module 24 is connected to both the wireless signal processing unit 231 and the transmitting antenna 232 to provide power. The input terminal of the wireless signal processing unit 231 is connected to a controller 22, and the output terminal of the wireless signal processing unit 231 is connected to the transmitting antenna 232. The wireless signal processing unit 231 transmits the processed digital signal to the vehicle's controller 22 through the transmitting antenna 232. This wireless transmission module 23 is compatible with various wireless transmission standards, such as Wi-Fi, Bluetooth, and Ultra Wide Band (UWB).

[0045] Correspondingly, the wireless redundancy sensor 100 also includes a sensor housing 102 and a main housing 101. The sensor housing 102 is fixed to the main housing 101. The first sensor chip 13, the second sensor chip 14, the bracket 11, the first metal terminal 131, and the second metal terminal 141 are all disposed within the sensor housing 102. The control panel 21 is disposed within the main housing 101. The main housing 101 is box-shaped, and the sensor housing 102 is columnar. The sensor housing 102 and the main housing 101 can be integrally formed or fixedly assembled by a detachable assembly method. In one embodiment, the main housing 101 includes a shell body 1011 with a receiving cavity and a shell cover 1012 assembled to the shell body 1011. The control module 20 is assembled within the receiving cavity. By assembling the shell cover 1012 to the shell body 1011, the main housing 101 forms a sealed structure. The first sensor chip 13 and the second sensor chip 14 are located at the end of the sensor housing 102 away from the main housing 101.

[0046] Furthermore, the wireless redundancy sensor 100 also includes a mounting portion 30 disposed on the sensor housing 102. The mounting portion 30 includes a connecting arm 31 and a mounting hole 32 disposed on the connecting arm 31. The connecting arm 31 extends along the thickness direction of the main housing 101. Of course, the connecting arm 31 can also extend at different angles relative to the main housing 101 to adapt to different installation environments. The mounting portion 30 is integrally formed with the sensor housing 102. In one embodiment, the mounting portion 30 is a flange structure formed on the sensor housing 102, and the mounting hole 32 is used for connection with a vehicle. A metal ring 33 can be disposed at the mounting hole 32 to enhance connection reliability.

[0047] Furthermore, in order to enhance the reliability of the wireless redundant sensor 100, the wireless redundant sensor 100 of the present invention is also provided with a wired connection structure, which is connected to the vehicle controller so that the vehicle controller can make a comprehensive judgment based on the data obtained by the wired connection, thereby improving the reliability of the acquired sensing signal and avoiding safety hazards caused by data deviation.

[0048] In one embodiment, the wireless redundant sensor 100 further includes a connector 40 for connection to a vehicle for electrical connection to a vehicle controller. The connector 40 can be directly connected or electrically connected to the vehicle controller via other components. The housing of the connector 40 and the sensor housing 102 are located on opposite sides of the main housing 101. Specifically, the connector 40 includes a connector housing 41 and a connection terminal 42. One end of the connection terminal 42 is connected to the control panel 21, and the other end of the connection terminal 42 is located inside the connector housing 41.

[0049] In another embodiment, such as Figure 7 and Figure 8 The wireless redundant sensor 100 also includes a wiring harness 50 connected to the vehicle controller. One end of the wiring harness 50 is connected to the control panel 21 and extends out of the main housing 101, while the other end extends to connect to the vehicle end. It can be electrically connected to the vehicle controller directly or through other components. The wiring harness 50 and the sensor housing 102 are located on opposite sides of the main housing 101.

[0050] The redundant sensor provided by this invention adds a control module to the sensing module. The control module also includes a wireless transmission module. This allows the sensing signal to be processed and transmitted to the vehicle controller wirelessly, reducing the use of wiring harnesses, lowering the overall vehicle cost, and ensuring that the signal transmission is not affected by dynamic areas, thus reducing the risk of signal interruption and improving the reliability and stability of the redundant sensor.

[0051] While the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the invention to these descriptions. Various changes in form and detail can be made by those skilled in the art, including several simple deductions or substitutions, without departing from the spirit and scope of the invention.

Claims

1. A wireless redundancy sensor, characterized in that, The device includes a sensing module and a control module. The sensing module includes a bracket and a first sensor chip mounted on the bracket. The control module includes a control panel and a controller and a wireless transmission module disposed on the control panel. The first sensor chip is connected to the control panel through a first metal terminal. The controller is configured to process the sensing signal from the first sensor chip and send the processed sensing signal to the wireless transmission module, so that the wireless transmission module transmits the signal to the vehicle controller.

2. The wireless redundancy sensor according to claim 1, characterized in that, The sensing module also includes a second sensor chip, which is connected to the control panel via a second metal terminal. The first sensor chip and the second sensor chip are arranged side by side or stacked.

3. The wireless redundancy sensor according to claim 2, characterized in that, The control module further includes a signal processing module. The input terminal of the signal processing module is connected to the first sensor chip and the second sensor chip, respectively. The output terminal of the signal processing module is connected to the controller. The controller is used to transmit the sensor signal processed by the signal processing module to the vehicle controller through the wireless transmission module.

4. The wireless redundancy sensor according to claim 3, characterized in that, The control module also includes a power module disposed on the control panel. The power module is electrically connected to each device on the control panel. The power module is also connected to the first sensor chip and the second sensor respectively, thereby supplying power to the first sensor chip and the second sensor chip.

5. The wireless redundancy sensor according to claim 1, characterized in that, The wireless transmission module includes a wireless signal processing unit and a transmitting antenna. The input terminal of the wireless signal processing unit is connected to the controller, and the output terminal of the wireless signal processing unit is connected to the transmitting antenna.

6. The wireless redundancy sensor according to claim 1, characterized in that, The controller is a CPLD chip.

7. The wireless redundancy sensor according to claim 2, characterized in that, The wireless redundancy sensor also includes a sensor housing and a main housing. The sensor housing is fixed to the main housing. The first sensor chip, the second sensor chip, the bracket, the first metal terminal, and the second metal terminal are all disposed inside the sensor housing. The control panel is disposed inside the main housing.

8. The wireless redundancy sensor according to claim 7, characterized in that, The main housing is box-shaped, and the sensor housing is column-shaped.

9. The wireless redundancy sensor according to claim 7, characterized in that, The wireless redundancy sensor also includes a mounting portion disposed on the sensor housing, the mounting portion including a connecting arm and a mounting hole disposed on the connecting arm, the connecting arm extending along the thickness direction of the main housing.

10. The wireless redundancy sensor according to claim 3, characterized in that, Both the first sensor chip and the second sensor chip are wheel speed sensor chips.

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