An ASI bus interface slave module structure

Abstract

The utility model provides a kind of ASI bus interface slave station module structure, including internal functional unit, external interface and pilot lamp, the internal functional unit includes Asi communication unit, isolation unit, power unit, signal input unit and signal output unit, the external interface includes signal input interface, signal output interface, power supply interface, addressing interface and ASi communication interface, the pilot lamp includes Asi state pilot lamp, Asi error pilot lamp, input state pilot lamp, output state pilot lamp and power supply pilot lamp, the external interface and pilot lamp are all located shell same face.The utility model has the beneficial effect: through single cable, realize economic and efficient power and signal transmission, and as slave node is connected to ASi network, while connecting industrial sensor and actuator.

Description

Technical Field

[0001] This utility model belongs to the field of ASI communication technology, and in particular relates to an ASI bus interface slave module structure. Background Technology

[0002] ASI (Actor-Sensor Interface) bus technology emerged from the urgent need in industrial automation for low-cost, high-reliability fieldbuses. Its core background can be traced back to the 1990s, when communication between industrial field devices (such as sensors and actuators) and control systems primarily relied on 4-20mA analog signals or parallel digital interfaces, resulting in the following pain points: high cabling costs: each device required independent cabling, leading to a surge in costs for complex systems; signal interference: analog signals were susceptible to electromagnetic noise, limiting accuracy; poor scalability: adding new devices required redesigning cabling, resulting in low flexibility. Against this backdrop, ASI bus technology was developed, aiming to achieve bidirectional communication between sensors, actuators, and the master station using a single two-core cable, significantly reducing system complexity and cost.

[0003] The ASI (Actor-Sensor Interface) bus slave module, as a core component for communication between industrial field devices and the master station, is technologically closely related to the industrial automation's demand for low-cost, high-reliability, and easily deployable low-level I / O communication. The positioning of the ASI bus interface slave module: Bridging role: The slave module is the terminal execution unit of the ASI bus network, responsible for converting sensor signals (such as switch signals and analog signals) into digital signals and uploading them to the master station, or issuing master station commands to actuators (such as solenoid valves and motor drivers); Minimalist design: The slave module must meet the requirements of low cost, low power consumption, and small size, and be adaptable to harsh industrial environments (such as dustproof, waterproof, and vibration-resistant). Utility Model Content

[0004] In view of this, the present invention aims to propose an ASI bus interface slave module structure to solve the problem that slave modules are difficult to achieve economical and efficient power and signal transmission through a single cable and are connected to the ASi network as slave nodes.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] An ASI bus interface slave module structure includes a housing, internal functional units, external interfaces, and indicator lights. The internal functional units are located inside the housing and include an ASCII communication unit, an isolation unit, a power supply unit, a signal input unit, and a signal output unit. The external interfaces include a signal input interface, a signal output interface, a power supply interface, an addressing interface, and an ASCII communication interface. The indicator lights include an ASCII status indicator, an ASCII error indicator, an input status indicator, an output status indicator, and a power supply indicator. The external interfaces and indicator lights are all located on the same side of the housing.

[0007] The power supply interface is connected to the power supply unit, the addressing interface and the ASi communication interface are both connected to the ASi communication unit, the signal input interface is connected to the ASi communication unit through the signal input unit and the isolation unit, the ASi communication unit is connected to the signal output interface through the isolation unit and the signal output unit, and the power supply unit provides auxiliary power to the signal output unit.

[0008] Connect to the ASi network via a single cable as a slave node.

[0009] Furthermore, the Asi communication unit employs an Asi network chip, which is configured as an Asi network slave node.

[0010] Furthermore, the isolation unit uses an optocoupler TLP291-4 for signal isolation.

[0011] Furthermore, the signal input unit employs a MAX31913 industrial digital input level converter.

[0012] Furthermore, the signal output unit employs the MAX14912 industrial digital output driver.

[0013] Furthermore, the addressing interface connects to an external fixed or handheld programming device and sets the slave address.

[0014] Furthermore, the Asi communication unit is equipped with an EEPROM, and configuration data is stored in the EEPROM, which is programmed using a fixed or handheld programming device.

[0015] Furthermore, the enclosure has an IP20 protection rating.

[0016] Compared with the prior art, the ASI bus interface slave module structure of this utility model has the following advantages:

[0017] (1) The ASI bus interface slave module structure described in this utility model realizes economical and efficient power and signal transmission through a single cable, and is connected to the ASi network as a slave node, while connecting to industrial sensors and actuators.

[0018] (2) The ASI bus interface slave module structure described in this utility model has an IP20 protection level shell, which is suitable for harsh industrial environments (dustproof, waterproof, and vibration resistant).

[0019] (3) The ASI bus interface slave module structure described in this utility model can also greatly reduce costs: Reduced wiring costs: A single dual-core cable replaces the traditional multi-core cable, reducing material costs by more than 50%. Reduced installation costs: No professional electrician is required; ordinary workers can quickly complete the wiring and equipment connection. Attached Figure Description

[0020] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0021] Figure 1 This is a front view schematic diagram of the overall structure described in the embodiment of this utility model;

[0022] Figure 2 This is a side view diagram of an embodiment of the present utility model;

[0023] Figure 3 This is a functional block diagram of the slave module according to an embodiment of the present utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Signal input interface; 2. ASCII status indicator; 3. ASCII error indicator; 4. Input status indicator; 5. Output status indicator; 6. Power supply indicator; 7. Addressing interface; 8. Signal output interface; 9. Power supply interface; 10. ASCII communication interface. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] like Figures 1 to 3 As shown, an ASI bus interface slave module structure includes a housing, internal functional units, external interfaces, and indicator lights. The internal functional units are located inside the housing and include an ASCII communication unit, an isolation unit, a power supply unit, a signal input unit, and a signal output unit. The external interfaces include a signal input interface 1, a signal output interface 8, a power supply interface 9, an addressing interface 7, and an ASI communication interface 10. The indicator lights include an ASCII status indicator light 2, an ASCII error indicator light 3, an input status indicator light 4, an output status indicator light 5, and a power supply indicator light 6. The external interfaces and indicator lights are all located on the same side of the housing.

[0031] The power supply interface 9 is connected to the power supply unit, the addressing interface 7 and the ASi communication interface 10 are both connected to the ASi communication unit, the signal input interface 1 is connected to the ASi communication unit through the signal input unit and the isolation unit, the ASi communication unit is connected to the signal output interface 8 through the isolation unit and the signal output unit, and the power supply unit provides auxiliary power to the signal output unit.

[0032] In a preferred embodiment of this invention, the ASCII communication unit employs an ASCII network chip, which is configured as an ASCII network slave node. In this embodiment, the ASCII network chip serves as an interface for the physical bus and provides functions such as power supply, physical data transmission, and communication protocol processing.

[0033] In a preferred embodiment of this invention, the isolation unit uses an optocoupler TLP291-4 for signal isolation. The signal input unit uses a MAX31913 industrial digital input level converter. The signal output unit uses a MAX14912 industrial digital output driver. In this embodiment, the optocoupler TLP291-4 isolates external signals from interfering with the module's internal signal. The MAX31913 industrial digital input level converter, as the front-end interface circuit of the slave module, performs level conversion, conditioning, and serialization processing on the sensor and 24V digital switch outputs, and transmits the acquired input signals to the ASCII communication unit for processing. The MAX14912 industrial digital output driver, as the output interface circuit of the slave module, provides two output states: on and off, and provides load open circuit / low voltage / undervoltage detection, overcurrent, and overtemperature protection.

[0034] In a preferred embodiment of this invention, the slave module is connected to the ASi network as a slave node via a single cable. The addressing interface 7 connects to an external fixed or handheld programming device and sets the slave address. The slave module fully conforms to the ASi Interface Complete Specification V3.0, and all configuration data is stored in an internal EEPROM, which is programmed using a fixed or handheld programming device. In this embodiment, a master station in an ASi network connects 62 slave modules via a single cable, and each slave has its own address. The single cable simultaneously transmits power and signals. The master station sends output data to the ASi communication unit of the slave module via the cable, and then to the signal output unit. Simultaneously, the signal input unit transmits the collected data to the ASi communication unit, and the ASi communication unit sends the processed data back to the master station via the cable.

[0035] The working principle of this utility model is as follows:

[0036] Asi Communication Unit: Includes an Asi network chip, which serves as an interface to the physical bus, enabling the module to function as part of an Asi network slave node, and provides power, physical data transmission, and communication protocol processing.

[0037] Isolation Unit: Ensures that the internal core components are not interfered with by external signals, improves the stability and security of the module, and uses TLP291-4 optocoupler for signal isolation to isolate external signals from interference to the internal components of the module.

[0038] Power supply unit: Provides power to the signal output unit.

[0039] Signal input unit: includes MAX31913 industrial digital input level converter, which serves as the front-end interface circuit of the slave module. It performs level conversion, conditioning and serialization processing on the sensor and 24V digital switch outputs, and transmits the collected input signals to the Asi communication unit for processing.

[0040] Signal output unit: includes MAX14912 industrial digital output driver, which serves as the output interface circuit of the slave module, providing two output states: on and off, and providing load open circuit / low voltage / under voltage detection, overcurrent and overtemperature protection.

[0041] In this embodiment, a master station in an ASi network connects 62 slave modules via a single cable, each slave having its own address. This single cable simultaneously transmits power and signals. The master station sends output data via the cable to the ASi communication unit of each slave module, which then transmits it to the signal output unit. Simultaneously, the signal input unit transmits the collected data to the ASi communication unit, which then sends the processed data back to the master station via the cable.

[0042] The wiring method of this utility model is as follows: Connect the ASCII communication cable to the ASCII communication interface of the slave module. Connect the sensor to the signal input interface of the slave module. Connect the actuator to the signal output interface of the slave module. Connect the auxiliary power supply cable to the power supply interface of the slave module. Connect the addresser to the addressing interface of the slave module.

[0043] The steps for using this utility model are as follows:

[0044] 1. Use the addresser to set the address of the slave module;

[0045] 2. Remove the addresser;

[0046] 3. When the object is brought close to the sensor, the corresponding input indicator light on the slave module will stay on.

[0047] 4. When the master station forces output, the corresponding output indicator light on the slave station module will light up, and the actuator will activate.

[0048] The advantages and beneficial effects of this utility model are as follows:

[0049] 1. Enables cost-effective power and signal transmission via a single cable, and connects to the ASi network as a slave node, while simultaneously connecting industrial sensors and actuators.

[0050] 2. The enclosure of this ASI bus interface slave module is equipped with an IP20 protection rating, making it suitable for harsh industrial environments (dustproof, waterproof, and vibration resistant).

[0051] 3. The ASI bus interface slave module structure can also significantly reduce costs:

[0052] Reduced cabling costs: Single-core dual-core cables replace traditional multi-core cables, reducing material costs by more than 50%.

[0053] Reduced installation costs: No professional electrician is required; ordinary workers can quickly complete the wiring and equipment connection.

[0054] It should be noted that this application does not improve the control program; the control program, communication protocol, and electrical components involved are all prior art.

[0055] The above description is only a preferred embodiment of the present utility model and is 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 should be included within the protection scope of the present utility model.

Claims

1. A slave module structure for an ASI bus interface, characterized in that: The device includes a housing, internal functional units, external interfaces, and indicator lights. The internal functional units are located inside the housing and include an Asi communication unit, an isolation unit, a power supply unit, a signal input unit, and a signal output unit. The external interfaces include a signal input interface (1), a signal output interface (8), a power supply interface (9), an addressing interface (7), and an Asi communication interface (10). The indicator lights include an Asi status indicator light (2), an Asi error indicator light (3), an input status indicator light (4), an output status indicator light (5), and a power supply indicator light (6). The external interfaces and indicator lights are all located on the same side of the housing. The power supply interface (9) is connected to the power supply unit, the addressing interface (7) and the ASi communication interface (10) are both connected to the Asi communication unit, the signal input interface (1) is connected to the Asi communication unit through the signal input unit and the isolation unit, the Asi communication unit is connected to the signal output interface (8) through the isolation unit and the signal output unit, and the power supply unit provides auxiliary power to the signal output unit. Connect to the ASi network via a single cable as a slave node.

2. The ASI bus interface slave module structure according to claim 1, characterized in that: The Asi communication unit uses an Asi network chip, and the Asi network chip is configured as an Asi network slave node.

3. The ASI bus interface slave module structure according to claim 1, characterized in that: The isolation unit uses an optocoupler TLP291-4 for signal isolation.

4. The ASI bus interface slave module structure according to claim 1, characterized in that: The signal input unit uses the MAX31913 industrial digital input level converter.

5. The ASI bus interface slave module structure according to claim 1, characterized in that: The signal output unit uses the MAX14912 industrial digital output driver.

6. The ASI bus interface slave module structure according to claim 1, characterized in that: The addressing interface (7) connects to an external fixed or handheld programming device and sets the slave address.

7. The ASI bus interface slave module structure according to claim 1, characterized in that: The Asi communication unit is equipped with an EEPROM, and the configuration data is stored in the EEPROM. The EEPROM is programmed using a fixed or handheld programming device.

8. The ASI bus interface slave module structure according to claim 1, characterized in that: The enclosure has an IP20 protection rating.

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