105 degree celsius 25 gbps optical module for vehicle

Abstract

The utility model relates to a kind of 105 ℃ 25Gbps optical module for vehicle, including laser driver unit, optical transmitter unit, signal amplifier unit, optical receiver unit and temperature control unit, the temperature control unit is connected with laser driver unit, signal amplifier unit respectively, the temperature control unit is through the temperature sensor of microprocessor and detects current working temperature, opens TEC temperature control function, when temperature rises, TEC thermosensitive exchange is carried out and temperature is controlled in normal temperature range, guarantee the normal work of optical module. The utility model is the upgrading optimization of traditional optical module, through unique structure design, can satisfy extremely severe temperature environment, rate reaches single channel 25Gbps, automatically detects temperature, controls temperature, adjusts internal parameter, and accelerates the progress for early realization ADAS's automatic driving.

Description

Technical Field

[0001] This utility model relates to the field of automotive optical module technology, specifically a 105°C 25Gbps optical module for automotive use. Background Technology

[0002] With the improvement and enhancement of ADAS (Advanced Driver Assistance Systems) functions, and the industry's focus on autonomous vehicles, the bit rate of intelligent vehicles is constantly increasing as it flows through their nervous system. Cameras, sensors, controllers, LiDAR, V2X, and other onboard perception systems are the basic configurations for realizing ADAS functions, which creates a huge demand for data bandwidth in onboard communication networks. Traditional communication protocols are insufficient to meet the bandwidth requirements of the large number of sensors and subsystems needed for ADAS; optical fiber, as the neurons of this system, is becoming increasingly important.

[0003] The requirements for optical modules in automotive fiber optic communication are quite stringent compared to those in data centers and industrial applications. The automotive environment is harsher than that of data center modules, especially in the engine area where temperatures can reach up to 100°C, and damage and replacement are not allowed to meet automotive-grade standards. The AEC-Q100 qualification standard used in the automotive industry specifies that in-vehicle electronic equipment should support an ambient temperature range of -40°C to +105°C, and current optical modules are difficult to meet the requirements in such harsh environments. Utility Model Content

[0004] The purpose of this invention is to provide a 105°C 25Gbps optical module for vehicle use, in order to solve the existing problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a 105℃ 25Gbps optical module for vehicle use, comprising a laser driver unit, an optical transmitter unit, a signal amplifier unit, an optical receiver unit, and a temperature control unit. The temperature control unit is connected to the laser driver unit and the signal amplifier unit respectively. The temperature control unit detects the current operating temperature through a temperature sensor of a microprocessor and activates the TEC temperature control function. When the temperature rises, TEC thermal exchange is performed to control the temperature within the normal temperature range, ensuring the normal operation of the optical module. The laser driver unit is connected to the optical transmitter unit, which converts electrical signals into optical signals for transmission through optical fiber. The signal amplifier unit is connected to the optical receiver unit, which converts the received optical signals transmitted through the optical fiber into electrical signals, which are then amplified in two stages by the signal amplifier unit.

[0006] Preferably, the temperature control unit detects the operating temperature in real time and cools the high-temperature heat through a thermistor; at the same time, it compensates for the photoelectric emission indicators inside the optical module to ensure that the indicators meet the optical module protocol standards.

[0007] Preferably, the temperature control unit controls the internal parameters of the optical module through the IIC interface.

[0008] Compared with the prior art, the beneficial effects of this utility model are: the 105℃ 25Gbps optical module for vehicle use can meet extremely harsh temperature environments, achieve a single-channel speed of 25Gbps, automatically detect and control the temperature, and adjust internal parameters, thus accelerating the progress of ADAS autonomous driving. Attached Figure Description

[0009] Figure 1 This is a functional block diagram of the vehicle-mounted 105℃ 25Gbp optical module of this utility model.

[0010] In the diagram: 1. Laser driver unit; 2. Optical transmitter unit; 3. Signal amplifier unit; 4. Optical receiver unit; 5. Temperature control unit. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] Please see Figure 1 The present invention provides an embodiment of a 105℃ 25Gbps optical module for vehicle use, comprising a laser driver unit 1, an optical transmitter unit 2, a signal amplifier unit 3, an optical receiver unit 4, and a temperature control unit 5. The temperature control unit 5 is connected to the laser driver unit 1 and the signal amplifier unit 3, respectively. The temperature control unit 5 detects the current operating temperature through a temperature sensor of a microprocessor and activates the TEC temperature control function. When the temperature rises, TEC thermal exchange is performed to control the temperature within the normal temperature range, ensuring the normal operation of the optical module. The laser driver unit 1 is connected to the optical transmitter unit 2, which converts electrical signals into optical signals for transmission through optical fiber. The signal amplifier unit 3 is connected to the optical receiver unit 4, which converts the received optical signals transmitted through the optical fiber into electrical signals, which are then amplified in two stages by the signal amplifier unit.

[0013] The temperature control unit 5 monitors the operating temperature in real time and cools the high-temperature heat through thermistor cooling. At the same time, it compensates for the photoelectric emission indicators inside the optical module to ensure that the indicators meet the optical module protocol standards. Even if the temperature is too high and exceeds the normal operating temperature range of the optical module, no intervention is required, as the temperature control unit 5 automatically cools the optical module. The temperature control unit 5 controls the internal indicators of the optical module through the IIC interface.

[0014] like Figure 1 As shown, this utility model provides a 105℃ 25Gbps optical module for vehicle use. The optical transmitter unit 2 consists of an optical chip, an MPD chip, etc., and uses coaxial packaging to achieve low cost and high performance. The laser drive unit 1 consists of a laser driver chip to modulate high-speed electrical signals. The optical receiver unit 4 consists of a PD chip and a TIA chip to convert optical signals into electrical signals. The signal amplifier unit 3 consists of a limiting amplifier chip to amplify and shape the high-speed signal after electro-optical conversion. The temperature control unit 5 consists of a microprocessor (MCU) and a TEC chip to monitor the temperature of the optical module in real time, cool the module if it exceeds the temperature limit, and simultaneously compensate and adjust the optical module's specifications.

[0015] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A 105℃ 25Gbps optical module for vehicle mounting, comprising a laser driver unit (1), an optical transmitter unit (2), a signal amplifier unit (3), an optical receiver unit (4), and a temperature control unit (5), characterized in that: The temperature control unit (5) is connected to the laser driver unit (1) and the signal amplifier unit (3) respectively. The temperature control unit (5) detects the current working temperature through the temperature sensor of the microprocessor and enables the TEC temperature control function. When the temperature rises, the TEC thermoelectric exchange is performed to control the temperature within the normal temperature range to ensure the normal operation of the optical module. The laser driver unit (1) is connected to the optical transmitter unit (2). The optical transmitter unit (2) converts electrical signals into optical signals and transmits them through optical fibers. The signal amplifier unit (3) is connected to the optical receiver unit (4). The optical receiver unit converts the optical signals received through the optical fiber into electrical signals and amplifies the signals in two stages through the signal amplifier unit.

2. The 105℃ 25Gbps optical module for vehicle mounting according to claim 1, characterized in that: The temperature control unit (5) detects the working temperature in real time and cools the high-temperature heat through thermistor cooling; at the same time, it compensates for the photoelectric emission index inside the optical module to ensure that the index meets the optical module protocol standard.

3. A 105°C 25Gbps optical module for vehicle mounting according to claim 1, characterized in that: The temperature control unit (5) controls the internal parameters of the optical module through the IIC interface.

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