Industrial network synchronization device
By introducing a heat dissipation structure and a hybrid link transmission scheme into the industrial network synchronization device, combined with redundant control modules and a high-precision clock, the problems of poor heat dissipation and anti-interference are solved, and high-precision industrial network synchronization is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEI LI TECHNOLOGY (JIANGSU) CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-04-17
AI Technical Summary
Industrial network synchronization devices suffer from poor heat dissipation in high-temperature environments, affecting component performance and lifespan. At the same time, existing synchronization solutions lack accuracy and have weak anti-interference capabilities, failing to meet the requirements of precision control.
A heat dissipation structure was designed inside the mounting housing, including a heat dissipation chamber, heat dissipation holes and a fan. Combined with fiber optic and cable hybrid link transmission, redundant control modules and high-precision clock modules are used. An aluminum alloy housing and GPS satellite timing are used to achieve efficient heat dissipation and resistance to electromagnetic interference.
It effectively solved the heat dissipation problem, improved synchronization accuracy and anti-interference ability, and ensured the stable operation of industrial network synchronization devices in complex environments.
Smart Images
Figure CN224139018U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of industrial automation technology, specifically an industrial network synchronization device. Background Technology
[0002] Industrial environments are typically hot, and industrial network synchronization equipment may be installed in enclosed control cabinets. Since high-precision electronic components such as FPGAs and OCXOs generate heat during operation, poor ventilation may affect internal heat dissipation, leading to a decrease in component performance or a shortened lifespan.
[0003] Moreover, in industrial automation systems, the collaborative control of multiple devices relies on precise time synchronization. Existing technologies mainly adopt the following approach: transmitting timestamps via Ethernet. However, due to network latency and jitter, the synchronization accuracy is only at the millisecond level (±10ms), which cannot meet the requirements of precision control (such as robot collaborative welding, power grid phase synchronization, etc.).
[0004] Fiber optic synchronization scheme: It uses unidirectional fiber optic transmission, which reduces electromagnetic interference, but does not solve the delay error caused by the asymmetry of the transmission path, and does not integrate a redundancy mechanism.
[0005] Therefore, the following conclusions are drawn regarding the shortcomings of the existing technology mentioned above:
[0006] Insufficient accuracy: Traditional solutions are limited by crystal oscillator stability and protocol processing latency;
[0007] Weak anti-interference capability: Cable transmission is susceptible to electromagnetic interference (EMI) generated by equipment such as frequency converters and high-power motors. Utility Model Content
[0008] To address the aforementioned technical problems, this utility model provides an industrial network synchronization device to solve issues such as poor heat dissipation in existing network synchronization devices.
[0009] An industrial network synchronization device includes a mounting housing. A network synchronization module is disposed inside the mounting housing. Vertical mounting plates are symmetrically arranged on the inner top wall of the mounting housing. The network synchronization module is located between two of the mounting plates. A heat dissipation chamber is formed between the side of the mounting plate away from the network synchronization module and the mounting housing.
[0010] It also includes heat dissipation holes, which are opened on the side wall of the mounting plate opposite the mounting housing and are distributed in multiple layers. A cooling fan is provided above the network synchronization module.
[0011] Preferably, the bottom of the mounting plate is provided with an air guide plate, and the two air guide plates are arranged opposite each other and inclined downward towards the bottom of the mounting housing.
[0012] Preferably, the spacing between the heat dissipation holes on the mounting housing gradually increases from the bottom to the top.
[0013] Preferably, the left and right outer side walls of the mounting housing are symmetrically provided with limiting strips, the cross-sectional profile of the limiting strips is "L" shaped, and the "L" shaped openings of the limiting strips are arranged opposite each other. An adjusting plate is provided between the two limiting strips on the same side, and an adjusting screw is provided between the adjusting plate and the mounting housing.
[0014] Preferably, the cooling fan is mounted on the inner top plate of the mounting housing, and a control power supply is provided on the top of the mounting housing, the control power supply being electrically connected to the cooling fan.
[0015] Preferably, the network synchronization module includes a master clock module, a slave clock module, a synchronization signal transmission module, a redundancy control module, and a power supply module. The master clock module is interconnected with the synchronization signal transmission module. The synchronization signal transmission module is connected to the slave clock module via a hybrid fiber optic and cable link. The redundancy control module is connected in parallel with the master clock module. The power supply module provides isolated power to each module.
[0016] Preferably, the master clock module includes a temperature-controlled crystal oscillator, a satellite timing unit, and a PTP protocol processing chip; the synchronization signal transmission module includes a photoelectric conversion unit, an EMI filter, and a differential signal amplifier; the redundancy control module includes a dual master clock architecture and an FPGA-based fast switching circuit; and the slave clock module integrates a dynamic calibration algorithm and a temperature compensation unit.
[0017] Compared with the prior art, the present invention has the following beneficial effects:
[0018] 1. This utility model features an installation plate inside the mounting housing, forming a heat dissipation chamber between the installation plate and the mounting housing. A cooling fan is located above the network synchronization module. When the cooling fan is turned on, it blows air downwards onto the network synchronization module. Heat is transferred downwards between the two installation plates and eventually enters the heat dissipation chamber, exiting through the heat dissipation holes. This reduces heat accumulation within the network synchronization module and allows heat to dissipate more effectively through the heat dissipation holes, preventing excessively high temperatures during operation that could shorten the lifespan of internal components of the network synchronization module.
[0019] 2. This utility model features a synchronous signal transmission module that is connected to the clock module via a hybrid link of optical fiber and cable. The module is designed as a dual-channel module, which enhances its resistance to electromagnetic interference and adapts to complex industrial environments.
[0020] 3. This utility model utilizes an IP67-rated aluminum alloy housing for the device casing. The master clock module receives satellite signals via a GPS antenna, and the synchronization signal is transmitted to the slave clock module via optical fiber after photoelectric conversion. When a master clock anomaly is detected, the redundant control module switches to the backup master clock within 10ms. The slave clock module uses a dynamic PID algorithm for real-time calibration to eliminate the impact of transmission delay. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the internal components of the overall mounting housing of this utility model;
[0022] Figure 2 This is a schematic diagram of the structure of the limiting strip and adjusting plate of this utility model;
[0023] Figure 3 This is a block diagram of the overall synchronization network module structure of this utility model;
[0024] Figure 4 This is a block diagram of the component structure in each module of this utility model.
[0025] In the picture:
[0026] 1. Housing; 2. Network synchronization module; 3. Mounting plate; 4. Heat dissipation chamber; 5. Heat dissipation holes; 6. Cooling fan; 7. Air guide plate; 8. Limit bar; 9. Adjustment plate; 10. Adjustment screw; 11. Control power supply. Detailed Implementation
[0027] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0028] As attached Figure 1 To be continued Figure 4 As shown:
[0029] Example 1: This utility model provides an industrial network synchronization device, including a mounting housing 1, a network synchronization module 2 inside the mounting housing 1, vertical mounting plates 3 symmetrically arranged on the inner top wall of the mounting housing 1, the network synchronization module 2 being located between the two mounting plates 3, and a heat dissipation chamber 4 being formed between the side of the mounting plate 3 away from the network synchronization module 2 and the mounting housing 1.
[0030] It also includes heat dissipation holes 5, which are located on the side wall of the mounting plate 3 opposite to the mounting housing 1 and are distributed in multiple layers. A cooling fan 6 is provided above the network synchronization module 2.
[0031] It should be noted that by setting a mounting plate 3 inside the mounting housing 1, a heat dissipation chamber 4 is formed between the mounting plate 3 and the mounting housing 1. The cooling fan 6 is located above the network synchronization module 2. When the cooling fan 6 is turned on, it blows air downwards onto the network synchronization module 2. The heat will be transferred downwards between the two mounting plates 3 and finally enter the heat dissipation chamber 4, and then exit through the heat dissipation hole 5. This reduces the accumulation of heat in the network synchronization module 2 and allows the heat to be better dissipated through the heat dissipation hole 5, avoiding overheating during operation and extending the service life of the components inside the network synchronization module 2.
[0032] In this embodiment, the bottom of the mounting plate 3 is provided with a wind guide plate 7. The two guide plates are arranged opposite each other and tilted downwards toward the bottom of the mounting housing 1. There is a gap between the guide plates and the bottom of the mounting housing 1.
[0033] It should be noted that an air guide plate 7 is provided at the bottom of the mounting plate 3. The air guide plate 7 is designed to be inclined and has a gap with the bottom of the mounting housing 1. When the air between the two mounting plates 3 flows downward to the air guide plate 7, it will enter the heat dissipation chamber 4 along the air guide plate 7, so that the heat generated by the internal parts of the device during operation can be better carried into the heat dissipation chamber 4.
[0034] In this embodiment, the spacing of the heat dissipation holes 5 on the mounting housing 1 gradually increases from the bottom to the top.
[0035] It should be noted that by designing the heat dissipation holes 5 with the spacing gradually increasing towards the top, the number of heat dissipation holes 5 in the lower half is greater. As a result, when heat enters the heat dissipation chamber 4, the greater number of heat dissipation holes 5 can better carry away the heat and improve the heat dissipation efficiency of the device.
[0036] In this embodiment, limiting strips 8 are symmetrically provided on the left and right outer side walls of the mounting housing 1. The cross-sectional profile of the limiting strips 8 is "L" shaped, and the "L" shaped openings of the limiting strips 8 are arranged opposite each other. An adjusting plate 9 is provided between the two limiting strips 8 on the same side, and an adjusting screw 10 is provided between the adjusting plate 9 and the mounting housing 1.
[0037] It should be noted that the limiting strip 8 is fixedly connected to the mounting housing 1, and the adjusting plate 9 is slidably mounted on the two limiting strips 8. The adjusting plate 9 can block the heat dissipation hole 5, so that when the device stops working, the adjusting plate 9 can move downward to block the heat dissipation hole 5. The adjusting plate 9 can be fixed by the adjusting screw 10, thereby preventing external dust from entering the mounting housing 1.
[0038] In this embodiment, the cooling fan 6 is installed on the inner top plate of the mounting housing 1, and the top of the mounting housing 1 is provided with a control power supply 11, which is electrically connected to the cooling fan 6.
[0039] It should be noted that by placing the cooling fan 6 above the two mounting plates 3, downward airflow can be provided to blow air onto the synchronous network module, transferring the heat generated during its operation downwards.
[0040] In this embodiment, the network synchronization module 2 includes a master clock module, a slave clock module, a synchronization signal transmission module, a redundancy control module, and a power supply module. The master clock module and the synchronization signal transmission module are interconnected. The synchronization signal transmission module is connected to the slave clock module through a hybrid link of optical fiber and cable. The redundancy control module is connected in parallel with the master clock module. The power supply module provides isolated power to each module.
[0041] It should be noted that the master clock module has a built-in high-precision temperature-controlled crystal oscillator (OCXO) and a GPS / BeiDou dual-mode timing unit, which outputs a reference clock signal;
[0042] The clock modules are distributed across various industrial equipment, including FPGA chips and dynamic calibration circuits, to receive the master clock signal in real time and correct the local clock.
[0043] The synchronous signal transmission module adopts a dual-channel structure of optical fiber and cable, and includes a photoelectric conversion unit and an anti-interference filter.
[0044] The redundant control module is equipped with dual master clocks that serve as hot backups for each other, and features an automatic fault switching circuit.
[0045] The power module uses a wide voltage input DC-DC isolated power supply and is equipped with a supercapacitor as an emergency power source.
[0046] In this embodiment, the master clock module includes a temperature-controlled crystal oscillator, a satellite timing unit, and a PTP protocol processing chip; the synchronization signal transmission module includes a photoelectric conversion unit, an EMI filter, and a differential signal amplifier; the redundancy control module includes a dual master clock architecture and an FPGA-based fast switching circuit; and the slave clock module integrates a dynamic calibration algorithm and a temperature compensation unit.
[0047] It should be noted that the temperature-controlled crystal oscillator is an SC-cut OCXO, the EMI filter is a π-type structure with an insertion loss ≥40dB@100MHz~1GHz, and the dynamic calibration algorithm adopts PID control with a proportional coefficient Kp=0.5~1.2 and an integration time Ti=5~20ms.
[0048] The above embodiment describes the usage method where the device housing is made of IP67-rated aluminum alloy. The master clock is installed in the workshop control cabinet, and the GPS antenna is placed on the roof. The master clock module receives satellite signals through the GPS antenna. The slave clock module is connected to the controllers of six collaborative robots. The synchronization signal is transmitted to the slave clock module through optical fiber after photoelectric conversion. When an abnormality is detected in the master clock, the redundant control module switches to the backup master clock within 10ms. The slave clock module is calibrated in real time through a dynamic PID algorithm to eliminate the impact of transmission delay.
[0049] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.
Claims
1. An industrial network synchronization apparatus, characterized by, include: The mounting housing (1) is provided with a network synchronization module (2) inside. The top wall of the mounting housing (1) is symmetrically provided with vertical mounting plates (3). The network synchronization module (2) is located between the two mounting plates (3). A heat dissipation chamber (4) is formed between the side of the mounting plate (3) away from the network synchronization module (2) and the mounting housing (1). It also includes heat dissipation holes (5), which are opened on the side wall of the mounting plate (3) facing the mounting housing (1) and are distributed in multiple layers. A cooling fan (6) is provided above the network synchronization module (2).
2. The industrial network synchronization apparatus of claim 1, wherein: The bottom of the mounting plate (3) is provided with a guide plate (7). The two guide plates (7) are arranged opposite each other and tilted downward toward the bottom of the mounting housing (1). There is a gap between the guide plate (7) and the bottom of the mounting housing (1).
3. The industrial network synchronization apparatus of claim 1, wherein: The spacing of the heat dissipation holes (5) on the mounting housing (1) gradually increases from bottom to top.
4. The industrial network synchronization apparatus of claim 3, wherein: The mounting housing (1) is provided with symmetrical limiting strips (8) on its left and right outer side walls. The cross-sectional profile of the limiting strip (8) is "L" shaped, and the "L" shaped openings of the limiting strip (8) are arranged opposite to each other. An adjusting plate (9) is provided between the two limiting strips (8) on the same side, and an adjusting screw (10) is provided between the adjusting plate (9) and the mounting housing (1).
5. The industrial network synchronization device as described in claim 1, characterized in that: The cooling fan (6) is installed on the inner top plate of the mounting housing (1). The top of the mounting housing (1) is provided with a control power supply (11), which is electrically connected to the cooling fan (6).
6. The industrial network synchronization apparatus of claim 1, wherein: The network synchronization module (2) includes a master clock module, a slave clock module, a synchronization signal transmission module, a redundancy control module, and a power supply module. The master clock module is interconnected with the synchronization signal transmission module. The synchronization signal transmission module is connected to the slave clock module through a hybrid link of optical fiber and cable. The redundancy control module is connected in parallel with the master clock module. The power supply module provides isolated power to each module.
7. The industrial network synchronization apparatus of claim 6, wherein: The master clock module includes a temperature-controlled crystal oscillator, a satellite timing unit, and a PTP protocol processing chip. The synchronization signal transmission module includes a photoelectric conversion unit, an EMI filter, and a differential signal amplifier. The redundancy control module includes a dual master clock architecture and an FPGA-based fast switching circuit. The slave clock module integrates a dynamic calibration algorithm and a temperature compensation unit.