Infrared detection system and vehicle-mounted infrared detector

Abstract

The invention discloses an infrared detection system and a vehicle-mounted infrared detector, and the infrared detection system comprises the vehicle-mounted infrared detector which is disposed on a vehicle, obtains an infrared radiation signal, and converts the infrared radiation signal into an electric signal; the signal processing module is connected with the vehicle-mounted infrared detector, receives the electric signal and processes the electric signal into a video signal; and the display terminal is connected with the signal processing module, receives the video signal and displays a video image. The vehicle-mounted infrared detector installed on the vehicle obtains infrared radiation signals of objects around the vehicle and converts the infrared radiation signals into electric signals, then the signal processing module processes the received electric signals into video signals and transmits the video signals to the display terminal on the vehicle, and the display terminal displays the objects around the vehicle in real time in the form of video images. Due to the fact that the infrared radiation signal of the object is detected, the surrounding environment of the vehicle can be accurately obtained at night, in the environment where sight is blocked or in the severe environment such as haze and glare, and therefore driving safety is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of infrared detection technology, and in particular to an infrared detection system and a vehicle-mounted infrared detector. Background Art

[0002] With the development of science and technology, autonomous driving technology has gradually become a recent trend. The most basic requirement of autonomous driving vehicles is to be able to "see" all objects and surrounding environments as early as possible under all conditions, while providing sufficient reaction time for decision-making.

[0003] The current solutions for achieving autonomous driving mainly include visual solutions that use camera image analysis as the main method and other sensors as auxiliary methods, and radar solutions that use lidar as the core sensor. However, these two solutions still have significant limitations. For example, at night, in fog, haze, glare and other environments with obstructed vision or harsh conditions, it may be impossible to accurately obtain the vehicle's surroundings, thus affecting driving safety. Summary of the invention

[0004] The invention provides an infrared detection system and a vehicle-mounted infrared detector, which are used to solve the technical problem that the existing vehicle detection scheme cannot accurately obtain the vehicle surrounding environment.

[0005] To solve the above technical problems, in the first aspect, the present invention proposes an infrared detection system, comprising: a vehicle-mounted infrared detector, installed on a vehicle, to acquire infrared radiation signals and convert them into electrical signals; a signal processing module, connected to the vehicle-mounted infrared detector, to receive electrical signals and process them into video signals; and a display terminal, connected to the signal processing module, to receive the video signals and display video images.

[0006] As a further improvement of the above technical solution:

[0007] The infrared detection system also includes a current / signal conversion circuit board, and the vehicle-mounted infrared detector, the signal processing module and the display terminal are electrically connected to the current / signal conversion circuit board through wires.

[0008] As a further improvement of the above technical solution:

[0009] The vehicle-mounted infrared detector includes a wireless signal transmitting module for transmitting an electrical signal in the form of an electromagnetic signal, and the signal processing module includes a wireless signal receiving module for receiving the electromagnetic signal.

[0010] As a further improvement of the above technical solution:

[0011] The signal processing module is specifically a smart phone, and the display terminal is specifically a head-up display system; or the signal processing module and the display terminal are integrated on a smart phone; or the signal processing module and the display terminal are integrated in a head-up display system.

[0012] As a further improvement of the above technical solution:

[0013] The current / signal conversion circuit board includes a power supply module, a signal processing interface module and an infrared detector interface module; the current input end of the power supply module is connected to the vehicle power supply end, the current output end of the power supply module is connected to the current input end of the signal processing interface module, the current output end of the signal processing interface module is connected to the current input end of the infrared detector interface module, and the signal port of the infrared detector interface module is connected to the signal port of the signal processing interface module.

[0014] As a further improvement of the above technical solution:

[0015] The power taking module includes a plurality of capacitors connected in series, a TVS tube D12 connected in series with the capacitor, a connection interface J3 and a magnetic bead L10, one end of the capacitor is connected to one end of the magnetic bead L10 and the connection interface J3, the other end of the capacitor is grounded, and the other end of the magnetic bead L10 is connected to the current output end VBUS_PWR; the signal processing interface module includes a capacitor C1, a capacitor C9, a TVS tube D2, a TVS tube D3, a TVS tube D13, a TVS tube D15, a common mode inductor L8 and a connection interface J1, one end of the capacitor C1 is connected to one end of the TVS tube D13, the current output end VBUS_PWR and the current input end of the connection interface J1, the One end of capacitor C9 is connected to one end of TVS tube D15 and the current output end VBUS_P2L of the connection interface J1, the first end of the common-mode inductor L8 is connected to the first signal port USB_DM_0 of the connection interface J1 and one end of the TVS tube D3, the second end of the common-mode inductor L8 is connected to the second signal port USB_DP_0 of the connection interface J1 and one end of the TVS tube D2, the third end USB_DM and the fourth end USB_DP of the common-mode inductor L8 are connected to the signal port of the infrared detector interface module, and the other ends of the capacitor C1, capacitor C9, TVS tube D2, TVS tube D3, TVS tube D13, and TVS tube D15 are all grounded.

[0016] As a further improvement of the above technical solution:

[0017] The infrared detector interface module includes a capacitor C2, a capacitor C15, a TVS tube D4, a TVS tube D5, a TVS tube D14, a common mode inductor L6, a common mode inductor L7 and a connection interface J2, one end of the capacitor C15 is connected to the current output end of the signal processing interface module and the first input end of the common mode inductor L7, the first output end of the common mode inductor L7 is connected to one end of the capacitor C2, one end of the TVS tube D14 and the current input end of the connection interface J2, the first signal port USB_DM_P2L of the connection interface J2 is connected to one end of the TVS tube D5 and the first end of the common mode inductor L6, the second signal port USB_DP_P2L of the connection interface J2 is connected to one end of the TVS tube D4 and the second end of the common mode inductor L6, and the third end and the fourth end of the common mode inductor L6 are connected to the signal port of the signal processing interface module.

[0018] As a further improvement of the above technical solution:

[0019] The current / signal conversion circuit board also includes a protection circuit module, which includes a load switch chip U1, a capacitor C11, a resistor R12, a resistor R13 and a resistor R22. The first pin of the load switch chip U1 is connected to the current output port of the signal processing interface module, one end of the capacitor C11, one end of the resistor R12 and one end of the resistor R13. The third pin of the load switch chip U1 is connected to the other end of the resistor R13. The fourth pin of the load switch chip U1 is connected to the other end of the resistor R12. The fifth pin of the load switch chip U1 is grounded after passing through the resistor R22. The sixth pin of the load switch chip U1 is connected to the current input end of the infrared detector interface module. The second pin of the load switch chip U1 and the other end of the capacitor C11 are both grounded.

[0020] In the second aspect, an embodiment of the present invention also provides a vehicle-mounted infrared detector, including a shell, a camera module, a signal processing circuit and a clamping component, the signal processing circuit is fixed in the shell, the camera module is plugged into the signal processing circuit, and the clamping component is connected to the shell for fixing the shell on the vehicle.

[0021] As a further improvement of the above technical solution:

[0022] The shell is provided with a transparent protective window facing the camera of the camera module, and / or the shell is connected to the clamping component via an electric shaft, and the electric shaft is electrically connected to the signal processing circuit.

[0023] The present invention has the following beneficial effects: the infrared detection system of the embodiment of the present invention obtains infrared radiation signals of objects around the vehicle and converts them into electrical signals through a vehicle-mounted infrared detector installed on the vehicle, and then processes the received electrical signals into video signals through a signal processing module and transmits them to a display terminal on the vehicle. The display terminal displays objects around the vehicle in real time in the form of video images. Since the infrared radiation signals of the objects are detected, the surrounding environment of the vehicle can be accurately obtained at night, in fog, haze, glare and other environments with obstructed vision or in harsh environments, thereby ensuring driving safety.

[0024] In the above embodiments, the vehicle-mounted infrared detector and the corresponding infrared detection system embodiments belong to the same concept, and thus have the same technical effects as the corresponding infrared detection system embodiments, which will not be described in detail here.

[0025] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1 is a schematic diagram of an infrared detection system according to a first embodiment of the present invention;

[0028] Figure 2 is a schematic diagram of an infrared detection system according to a second embodiment of the present invention;

[0029] Figure 3 is a schematic diagram of an infrared detection system according to a third embodiment of the present invention;

[0030] Figure 4 is a schematic diagram of an infrared detection system according to a fourth embodiment of the present invention;

[0031] Figure 5 yes Figure 4 The circuit schematic diagram of the power extraction module;

[0032] Figure 6 yes Figure 4 The circuit schematic diagram of the signal processing interface module;

[0033] Figure 7 yes Figure 4 Circuit schematic diagram of the protection circuit module;

[0034] Figure 8 yes Figure 4 Circuit diagram of the mid-infrared detector interface module;

[0035] Fig. 9 It is a schematic diagram of the display terminal of the present invention displaying infrared thermal imaging video;

[0036] Fig.10 It is a structural schematic diagram of the vehicle-mounted infrared detector of the present invention;

[0037] Fig.11 yes Fig.10 Exploded diagram.

[0038] The symbols in the figure represent:

[0039] 1. Vehicle-mounted infrared detector; 11. Shell; 111. Transparent protective window; 112. Electric shaft; 12. Camera module; 13. Signal processing circuit; 14. Clamping component; 2. Signal processing; 3. Display terminal; 4. Current / signal conversion circuit board; 41. Power supply module; 42. Signal processing interface module; 43. Infrared detector interface module; 44. Protection circuit module. DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0041] In addition, unless otherwise defined, the technical terms or scientific terms used in the description of this application shall be the common meanings understood by the general technicians in the field to which this application belongs. The words "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inside", "outside" and other words indicating orientation used in the description of this application are only used to indicate the relative direction or positional relationship, and do not imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly, so it cannot be understood as a limitation on this application. The "first", "second", "third" and similar terms used in the description of this application are only used for descriptive purposes to distinguish different components, and cannot be understood as indicating or implying relative importance. The similar words "one", "one" or "the" used in the description of this application should not be understood as an absolute limitation on quantity, but should be understood as the existence of at least one. The similar words "including" or "comprising" used in the description of this application mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0042] It should also be noted that, unless otherwise clearly specified and limited, the words "installed", "connected", "connected" and similar terms used in the description of this application should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. Technical personnel in the field can understand their specific meanings in this application according to the specific circumstances.

[0043] like Figure 1 and Figure 2 As shown, the infrared detection system of this embodiment includes: a vehicle-mounted infrared detector 1, which is installed on the vehicle, obtains infrared radiation signals and converts them into electrical signals; a signal processing module 2, which is connected to the vehicle-mounted infrared detector 1, receives electrical signals and processes them into video signals; a display terminal 3, which is connected to the signal processing module 2, receives video signals and displays video images.

[0044] The infrared radiation signal of the objects around the vehicle is obtained by the vehicle-mounted infrared detector 1 installed on the vehicle and converted into an electrical signal. Then, the received electrical signal is processed into a video signal by the signal processing module 2 and transmitted to the display terminal 3 on the vehicle. The display terminal 3 displays the objects around the vehicle in real time in the form of a video image. Since the infrared radiation signal of the object is detected, the surrounding environment of the vehicle can be accurately obtained at night, in fog, haze, glare and other obstructed or harsh environments, thereby ensuring driving safety.

[0045] In a possible embodiment, Figure 2 As shown, the infrared detection system also includes a current / signal conversion circuit board 4, the vehicle-mounted infrared detector 1, the signal processing module 2 and the display terminal 3 are electrically connected to the current / signal conversion circuit board 4 through wires, the vehicle-mounted infrared detector 1, the signal processing module 2 and the display terminal 3 are connected through wires, and the vehicle-mounted infrared detector 1 is powered by the car, has a longer battery life, can effectively increase the anti-interference performance, and improve the system stability.

[0046] In a possible embodiment, the vehicle-mounted infrared detector 1 includes a wireless signal transmitting module for transmitting electrical signals in the form of electromagnetic signals, and the signal processing module 2 includes a wireless signal receiving module for receiving electromagnetic signals. The vehicle-mounted infrared detector 1 is connected to the signal processing module 2 via a wireless connection, which is more convenient to use.

[0047] In a possible embodiment, the signal processing module 2 is specifically a smart phone, and the display terminal 3 is specifically a head-up display system. By designing an algorithm that can process the signal emitted by the vehicle-mounted infrared detector 1 and encapsulating it into an app (application), after the smart phone installs the corresponding application, the electrical signal output by the infrared detector 1 can be processed into a video signal, and then the smart phone transmits the video signal to the head-up display system (HUD) for display.

[0048] In other embodiments, the signal processing module 2 and the display terminal 3 can be integrated into a smart phone, and the electric signal output by the infrared detector 1 is processed by an algorithm embedded in the app, and then the surrounding environment of the vehicle is displayed in real time through the display screen of the smart phone. At the same time, the smart phone also calls the data of the map software, for example, calling the AutoNavi SDK in China and calling Google Map in other areas. In this way, the mobile phone does not affect the use of navigation software while displaying the thermal imaging video, such as Fig. 9 As shown, thermal imaging video and navigation are displayed simultaneously in a smartphone.

[0049] In other embodiments, the signal processing module 2 and the display terminal 3 can be integrated into the head-up display system, and the ordinary HUD can be upgraded to an AI HUD. A processor can be integrated inside the HUD, and a program that can process the electrical signal output by the infrared detector 1 can be written into the processor. The surrounding environment of the vehicle can be detected during use, and the surrounding environment can be displayed in real time as a video image.

[0050] In a possible embodiment, Figure 3 As shown, the current / signal conversion circuit board 4 includes a power supply module 41, a signal processing interface module 42 and an infrared detector interface module 43; the current input end of the power supply module 41 is connected to the vehicle power supply end, the current output end of the power supply module 41 is connected to the current input end of the signal processing interface module 42, the current output end of the signal processing interface module 42 is connected to the current input end of the infrared detector interface module 43, and the signal port of the infrared detector interface module 43 is connected to the signal port of the signal processing interface module 42.

[0051] Specifically, the power supply module 41 obtains current from the car's cigarette lighter. A gasoline car has two power supply modes, namely engine power generation and battery power supply. When the car is not started, the battery power supply is used, and the voltage is about 11.5V. When the car is started, the engine power supply is used, and the voltage is about 12.5V. Therefore, considering that unstable electric potential may cause damage to the equipment, the current / signal conversion circuit board 4 is required to stabilize the electric potential to ensure current stability, thereby ensuring the stability of signal transmission.

[0052] In a possible embodiment, Figure 5 and Figure 6 As shown, the power-taking module 41 includes a plurality of capacitors connected in series, a TVS tube (transient voltage suppression diode) D12 connected in series with the capacitor, a connection interface J3 and a magnetic bead L10, one end of the capacitor is connected to one end of the magnetic bead L10 and the connection interface J3, the other end of the capacitor is grounded, and the other end of the magnetic bead L10 is connected to the current output terminal VBUS_PWR; the signal processing interface module 42 includes a capacitor C1, a capacitor C9, a TVS tube D2, a TVS tube D3, a TVS tube D13, a TVS tube D15, a common-mode inductor L8 and a connection interface J1, one end of the capacitor C1 is connected to one end of the TVS tube D13, the current output terminal VBUS_PWR and the connection interface J1 The current input end, one end of the capacitor C9 is connected to one end of the TVS tube D15 and the current output end VBUS_P2L of the connection interface J1, the first end of the common-mode inductor L8 is connected to the first signal port USB_DM_0 of the connection interface J1 and one end of the TVS tube D3, the second end of the common-mode inductor L8 is connected to the second signal port USB_DP_0 of the connection interface J1 and one end of the TVS tube D2, the third end USB_DM and the fourth end USB_DP of the common-mode inductor L8 are connected to the signal port of the infrared detector interface module 43, and the other ends of the capacitor C1, capacitor C9, TVS tube D2, TVS tube D3, TVS tube D13, and TVS tube D15 are all grounded.

[0053] It can be understood that the specific specifications of the electronic components in the figure, such as the specification of capacitor C21 is 1nF / 25, the description of such specifications is only used for the description of the embodiments of the present application, and cannot be understood as a limitation on the present application. The connection interface J1 and the connection interface J3 can be USB interfaces, TYPE-C interfaces and other interfaces that can be used by cars, smart phones and vehicle-mounted infrared detectors 1. The connection interface J1 and the connection interface J3 in the present embodiment are both TYPE-C interfaces, and their pin definitions are conventional prior art and will not be repeated here.

[0054] Specifically, the connection interface J3 is connected to the cigarette lighter of the car, and the four pins A4, B4, A9 and B9 of the connection interface J3 jointly output the electricity through the current output terminal VBUS_PWR after filtering. Capacitors C18, C19, C20, C21, C22, C23 and C31 are also connected in series between the magnetic bead L10 and the current output terminal VBUS_PWR. One end of the capacitor C22 and the capacitor C30 are respectively connected to the two ends of the magnetic bead L10, and the other ends of the capacitor C22 and the capacitor C30 are respectively connected to the two ends of the magnetic bead L9.

[0055] Among them, the multiple capacitors connected in series in the power taking module 41 are capacitor C4, capacitor C29 and capacitor C30. Capacitor C4, capacitor C29, capacitor C30 and TVS tube D12 can prevent voltage mutation, thereby playing a certain anti-interference role while protecting the circuit. Magnetic beads L9 and magnetic beads L10 are used to suppress noise in the high-frequency band. Capacitor C18, capacitor C19, capacitor C20, capacitor C21, capacitor C22, capacitor C23 and capacitor C31 can further enhance the anti-interference ability.

[0056] Capacitor C1 and TVS tube D13 filter the voltage and input it into the four pins A4, B4, A9 and B9 of the connection interface J1, so that the connection interface J1 can charge the smart phone. Since the connection interface J1 needs to charge the smart phone and power the vehicle-mounted infrared detector 1, and the standard type C interface has only one power port, the A8 and B8 pins of the connection interface J1 are changed into power ports to power the vehicle-mounted infrared detector 1 in this embodiment. In addition, the lightning port of the Apple mobile phone also requires a charging port for charging the mobile phone and a power port for powering the vehicle-mounted infrared detector 1. The design of this embodiment can achieve a compatible effect. The current output by the A8 and B8 pins passes through the capacitor C9 and TVS The tube D15 outputs the filtered data through the current output terminal VBUS_PWR. The A6 pin, B6 pin, A7 pin and B7 pin of the connection interface J1 are signal ports, wherein the A7 pin and the B7 pin are connected together to form the first signal port USB_DM_0, the B6 pin and the B7 pin are connected together to form the second signal port USB_DP_0, the TVS tube D2 and the TVS tube D3 are respectively connected to the second signal port USB_DP_0 and the first signal port USB_DM_0, for filtering the data. The common-mode inductor L8 connected to the first signal port USB_DM_0 and the second signal port USB_DP_0 is used to suppress common-mode interference and ensure the quality of the transmitted signal.

[0057] In a possible embodiment, Figure 4 and Figure 7 As shown, the current / signal conversion circuit board 4 also includes a protection circuit module 44, which includes a load switch chip U1, a capacitor C11, a resistor R12, a resistor R13 and a resistor R22. The first pin of the load switch chip U1 is connected to the current output port of the signal processing interface module 42, one end of the capacitor C11, one end of the resistor R12 and one end of the resistor R13. The third pin of the load switch chip U1 is connected to the other end of the resistor R13. The fourth pin of the load switch chip U1 is connected to the other end of the resistor R12. The fifth pin of the load switch chip U1 is grounded after passing through the resistor R22. The sixth pin of the load switch chip U1 is connected to the current input end of the infrared detector interface module 43. The second pin of the load switch chip U1 and the other end of the capacitor C11 are both grounded.

[0058] Specifically, in this embodiment, the sixth pin of the load switch chip U1 is the current output terminal VBUS_P2L_OUT of the protection circuit module 44, which is also connected to capacitors C12, C13, C24, C25, C26, C27, C28 and C32 for anti-interference. The load switch chip U1 can effectively suppress the surge current when plugging and unplugging the vehicle-mounted infrared detector 1, and perform overcurrent protection. The capacitor C11 is used to filter the current of the load switch chip U1. A resistor interface NC is also provided on the first pin and the sixth pin of the load switch chip U1 for inserting resistors of different resistance values ​​to achieve a compatible design.

[0059] In a possible embodiment, Figure 8 As shown, the infrared detector interface module 43 includes a capacitor C2, a capacitor C15, a TVS tube D4, a TVS tube D5, a TVS tube D14, a common-mode inductor L6, a common-mode inductor L7 and a connection interface J2. One end of the capacitor C15 is connected to the current output end of the signal processing interface module 42 and the first input end of the common-mode inductor L7. The first output end of the common-mode inductor L7 is connected to one end of the capacitor C2, one end of the TVS tube D14 and the current input end of the connection interface J2. The first signal port USB_DM_P2L of the connection interface J2 is connected to one end of the TVS tube D5 and the first end of the common-mode inductor L6. The second signal port USB_DP_P2L of the connection interface J2 is connected to one end of the TVS tube D4 and the second end of the common-mode inductor L6. The third and fourth ends of the common-mode inductor L6 are connected to the signal port of the signal processing interface module 42.

[0060] It can be understood that in the present embodiment, one end of the capacitor C15 is connected to the current output end of the signal processing interface module 42 after passing through the protection circuit module 44. Specifically, one end of the capacitor C15 is connected to the current output end VBUS_P2L_OUT of the protection circuit module 44. The current flows into the A4 pin, B4 pin, A9 pin and B9 pin of the connection interface J2 after passing through the common-mode inductor L7. The common-mode inductor L7 plays a role in filtering and suppressing common-mode interference. The capacitor C15 is used for filtering. The capacitor C2 and the TVS tube D14 prevent voltage mutations and suppress surge voltage while filtering. The connection interface J2 is used for the insertion of the vehicle-mounted infrared detector 1. Since the vehicle-mounted infrared detector 1 is arranged outside the vehicle, the electronic environment of the vehicle-mounted infrared detector 1 is harsh during the driving of the vehicle, and the power supply will be mixed with high and low frequency noise and interference signals of varying degrees. The circuit on the left side of the capacitor C2 is the common-mode inductor L7, which can play a role in filtering and suppressing common-mode interference. The capacitor C15 can also be used for filtering. The A7 pin and the B7 pin of the connection interface J2 are the first signal port USB_DM_P2L, and the A6 pin and the B6 pin of the connection interface J2 are the second signal port USB_DP_P2L. The TVS tube D4 and the TVS tube D5 are used to suppress electrostatic interference and improve EMC performance. The first signal port USB_DM_P2L and the second signal port USB_DP_P2L of the connection interface J2 are connected to the first signal port USB_DM_0 and the second signal port USB_DP_0 of the connection interface J1 through the common-mode inductor L6 and the common-mode inductor L8. The common-mode inductor L6 and the common-mode inductor L8 suppress the common-mode noise of the USB and ensure the signal quality transmitted by the USB interface. Since the connection interface J1 is connected to a smart phone and the connection interface J2 is connected to the vehicle-mounted infrared detector 1, the signal obtained by the vehicle-mounted infrared detector 1 is transmitted to the smart phone.

[0061] The connection between the smartphone, the car power supply end and the vehicle-mounted infrared detector 1 is achieved through the current / signal conversion circuit board 4, so that the smartphone can receive the signal of the vehicle-mounted infrared detector 1 and output video images while charging, so that the smartphone can be used as a display tool, reducing the cost of use. At the same time, it can be charged while increasing the battery life of the smartphone, realizing low-cost night vision assisted driving, and due to changes in the use environment, the anti-interference ability of the module is correspondingly improved, enhancing the robustness of the product.

[0062] like Figure 1 As shown above, the infrared detection system of this embodiment has at least the following characteristics:

[0063] 1. The vehicle-mounted infrared detector 1 can be connected to the signal processing module 2 and the display terminal 3 in the vehicle through a wired connection or a wireless connection. Multiple connection methods have stronger adaptability.

[0064] 2. The signal processing module 2 and the display terminal 3 can be integrated into a smartphone, or integrated into an AI HUD (intelligent head-up display system). A smartphone can also be used as the signal processing module 2 and the HUD (head-up display system) as the display terminal 3, which has more choices and wider adaptability.

[0065] 3. A wired connection is achieved between the mobile phone, the car power supply end and the vehicle-mounted infrared detector 1 through the current / signal conversion circuit board 4. The smart phone can receive the signal of the vehicle-mounted infrared detector 1 and output video images while charging. The smart phone can be used as a display tool, which reduces the cost of use. At the same time, it can be charged while the battery life of the smart phone is increased, and low-cost night vision assisted driving is achieved. In addition, due to changes in the use environment, the anti-interference ability of the module is correspondingly improved, thereby enhancing the robustness of the product.

[0066] 4. The current / signal conversion circuit board 4 can adapt to different voltages of car battery power supply and engine power supply, avoiding the possibility of electric potential causing damage to the equipment, while ensuring signal stability.

[0067] Another aspect of the present application embodiment also discloses a vehicle-mounted infrared detector, such as Fig.10 and Fig.11 As shown, it includes a shell 11, a camera module 12, a signal processing circuit 13 and a clamping component 14. The signal processing circuit 13 is fixed in the shell 11, the camera module 12 is plugged into the signal processing circuit 13, and the clamping component 14 is connected to the shell 11 to fix the shell 11 on the vehicle.

[0068] Among them, the side cover of the shell 11 can be opened, so as to facilitate the camera module 12 to enter the shell 11 and insert the signal processing circuit 13. After the camera module 12 enters the shell 11, the side cover is fastened by screws, and a sealing ring is provided at the connection between the side cover and the shell 11, so that the shell 11 needs to achieve IP67 waterproof performance. The shell 11 is directly clamped on the side of the car hood close to the car front window through the clamping component 14, so that the car can obtain the surrounding environment in real time during driving. In other embodiments, the vehicle-mounted infrared detector 1 can also be installed in other positions of the car according to actual needs, such as the right co-pilot position.

[0069] In a possible embodiment, when the vehicle-mounted infrared detector 1 is connected to the signal processing module 2 and the display terminal 3 in a wireless connection manner, a battery is provided in the housing 11 for power supply.

[0070] In a possible embodiment, when the HUD is used as a display terminal for vehicles with a higher field of view and sitting position, such as trucks / vans, a bracket needs to be installed on the HUD base to increase the height for easier viewing by the driver.

[0071] In this embodiment, a transparent protective window 111 facing the camera of the camera module 12 is provided on the housing 11 . The housing 11 is connected to the clamping component 14 via an electric shaft 112 , and the electric shaft 112 is electrically connected to the signal processing circuit 13 .

[0072] The transparent protective window 111 can protect the camera module 12 without affecting the camera module 12 from obtaining thermal radiation signals of the surrounding environment and objects. The electric shaft 112 can automatically hide the on-board infrared detector 1 when the vehicle is turned off. At the same time, if the on-board infrared detector 1 is placed on the right passenger side, it can also prevent "ghosts" in advance and improve driving safety.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An infrared detection system, characterized in that: include: A vehicle-mounted infrared detector (1), installed on the vehicle, acquires infrared radiation signals and converts them into electrical signals; A signal processing module (2) is connected to the vehicle-mounted infrared detector (1), receives the electrical signal and processes it into a video signal; The display terminal (3) is connected to the signal processing module (2), receives the video signal and displays the video image.

2. The infrared detection system according to claim 1, characterized in that: It also comprises a current / signal conversion circuit board (4), and the vehicle-mounted infrared detector (1), the signal processing module (2) and the display terminal (3) are electrically connected to the current / signal conversion circuit board (4) via wires.

3. The infrared detection system according to claim 1, characterized in that: The vehicle-mounted infrared detector (1) comprises a wireless signal transmitting module for transmitting an electrical signal in the form of an electromagnetic signal, and the signal processing module (2) comprises a wireless signal receiving module for receiving the electromagnetic signal.

4. The infrared detection system according to claim 2 or 3, characterized in that: The signal processing module (2) is specifically a smart phone, and the display terminal (3) is specifically a head-up display system; Or the signal processing module (2) and the display terminal (3) are integrated on a smart phone; Or the signal processing module (2) and the display terminal (3) are integrated into a head-up display system.

5. The infrared detection system according to claim 2, characterized in that: The current / signal conversion circuit board (4) comprises a power taking module (41), a signal processing interface module (42) and an infrared detector interface module (43); The current input end of the power taking module (41) is connected to the vehicle power supply end, the current output end of the power taking module (41) is connected to the current input end of the signal processing interface module (42), the current output end of the signal processing interface module (42) is connected to the current input end of the infrared detector interface module (43), and the signal port of the infrared detector interface module (43) is connected to the signal port of the signal processing interface module (42).

6. The infrared detection system according to claim 5, characterized in that: The power taking module (41) comprises a plurality of capacitors connected in series, a TVS tube D12 connected in series with the capacitors, a connection interface J3 and a magnetic bead L10, one end of the capacitors is connected to one end of the magnetic bead L10 and the connection interface J3, the other end of the capacitors is grounded, and the other end of the magnetic bead L10 is connected to a current output terminal VBUS_PWR; The signal processing interface module (42) comprises a capacitor C1, a capacitor C9, a TVS tube D2, a TVS tube D3, a TVS tube D13, a TVS tube D15, a common mode inductor L8 and a connection interface J1, one end of the capacitor C1 is connected to one end of the TVS tube D13, the current output end VBUS_PWR and the current input end of the connection interface J1, one end of the capacitor C9 is connected to one end of the TVS tube D15 and the current output end VBUS_P2L of the connection interface J1, and a first end of the common mode inductor L8 is connected to the The first signal port USB_DM_0 of the connection interface J1 is connected to one end of the TVS tube D3, the second end of the common mode inductor L8 is connected to the second signal port USB_DP_0 of the connection interface J1 and one end of the TVS tube D2, the third end USB_DM and the fourth end USB_DP of the common mode inductor L8 are connected to the signal port of the infrared detector interface module (43), and the other ends of the capacitor C1, the capacitor C9, the TVS tube D2, the TVS tube D3, the TVS tube D13, and the TVS tube D15 are all grounded.

7. The infrared detection system according to claim 5, characterized in that: The infrared detector interface module (43) comprises a capacitor C2, a capacitor C15, a TVS tube D4, a TVS tube D5, a TVS tube D14, a common mode inductor L6, a common mode inductor L7 and a connection interface J2. One end of the capacitor C15 is connected to the current output end of the signal processing interface module (42) and the first input end of the common-mode inductor L7; the first output end of the common-mode inductor L7 is connected to one end of the capacitor C2, one end of the TVS tube D14 and the current input end of the connection interface J2; the first signal port USB_DM_P2L of the connection interface J2 is connected to one end of the TVS tube D5 and the first end of the common-mode inductor L6; the second signal port USB_DP_P2L of the connection interface J2 is connected to one end of the TVS tube D4 and the second end of the common-mode inductor L6; the third end and the fourth end of the common-mode inductor L6 are connected to the signal port of the signal processing interface module (42).

8. The infrared detection system according to claim 5, characterized in that: The current / signal conversion circuit board (4) further comprises a protection circuit module (44), wherein the protection circuit module (44) comprises a load switch chip U1, a capacitor C11, a resistor R12, a resistor R13 and a resistor R22, The first pin of the load switch chip U1 is connected to the current output port of the signal processing interface module (42), one end of the capacitor C11, one end of the resistor R12 and one end of the resistor R13; the third pin of the load switch chip U1 is connected to the other end of the resistor R13; the fourth pin of the load switch chip U1 is connected to the other end of the resistor R12; the fifth pin of the load switch chip U1 is grounded after passing through the resistor R22; the sixth pin of the load switch chip U1 is connected to the current input end of the infrared detector interface module (43); the second pin of the load switch chip U1 and the other end of the capacitor C11 are both grounded.

9. A vehicle-mounted infrared detector, characterized in that: The invention comprises a housing (11), a camera module (12), a signal processing circuit (13) and a clamping component (14); the signal processing circuit (13) is fixed in the housing (11); the camera module (12) is plugged into the signal processing circuit (13); and the clamping component (14) is connected to the housing (11) and is used to fix the housing (11) on a vehicle.

10. The vehicle-mounted infrared detector according to claim 9, characterized in that: The housing (11) is provided with a transparent protective window (111) facing the camera of the camera module (12). And / or, the housing (11) is connected to the clamping component (14) via an electric rotating shaft (112), and the electric rotating shaft (112) is electrically connected to the signal processing circuit (13).

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