Multifunctional digital sensor interface circuit

Abstract

The utility model relates to a multifunctional digital sensor interface circuit, and relates to the technical field of digital sensor interface circuits. The controller comprises a controller and three interface modules, the three interface modules are a first interface module, a second interface module and a third interface module respectively, and a plurality of connecting ends of the controller are electrically connected to corresponding connecting ends of the sensor through the first interface module, the second interface module and the third interface module respectively; the connecting end of the controller is used for outputting different control signals, sending signals or receiving signals, and the interface module can be in a sending state or a receiving state according to the received control signals; when the interface module is in a sending state, the controller outputs a signal to the sensor through the interface module; when the interface module is in a receiving state, the sensor outputs a signal to the controller through the interface module. The digital sensor interface circuit has the effect that the digital sensor interface circuit achieves multiple functions.

Description

Technical Field

[0001] The present application relates to the technical field of digital sensor interface circuits, and in particular to a multifunctional digital sensor interface circuit. Background Art

[0002] With the continuous advancement of industrial automation, digital sensors are increasingly being used in various fields. However, traditional digital sensor interface circuits often have limited functionality, adapting only to specific application scenarios and lacking flexibility and versatility. This necessitates replacing the corresponding interface circuit when switching between different operating modes, increasing costs and maintenance complexity. Therefore, designing a digital sensor interface circuit that supports multiple operating modes while offering high flexibility and versatility has become a pressing issue. Utility Model Content

[0003] In order to enable a digital sensor interface circuit to realize multiple functions, the present application provides a multifunctional digital sensor interface circuit.

[0004] The present application provides a multifunctional digital sensor interface circuit that adopts the following technical solution:

[0005] A multifunctional digital sensor interface circuit includes a controller and three interface modules, the three interface modules are respectively configured as a first interface module, a second interface module and a third interface module, and the multiple connection ends of the controller are electrically connected to the corresponding connection ends of the sensor through the first interface module, the second interface module and the third interface module respectively; the connection ends of the controller are used to output different control signals, send signals or receive signals, and the interface module can be in a sending state or a receiving state according to the received control signal; when the interface module is in the sending state, the controller outputs a signal to the sensor through the interface module; when the interface module is in the receiving state, the sensor outputs a signal to the controller through the interface module.

[0006] By adopting the above-mentioned technical solution, the controller can control the first interface module, the second interface module and the third interface module to be in a sending state or a receiving state; when the first interface module is in a sending state and the second interface module is in a receiving state, the interface function of the sensor can be realized at this time; when the first interface module, the second interface module and the third interface module are all in a receiving state, the ECD encoder function can be realized at this time; when the controller alone controls the third interface module to be in a sending or receiving state, the IOLink function can be realized at this time, thereby enabling the present application to realize different functions through the controller, thereby improving the applicability and flexibility of the digital sensor interface.

[0007] Preferably, the first interface module includes a first transceiver U1, an inductor L1 and an inductor L2, the / RE and DE ends of the first transceiver U1 are electrically connected to the MOD end of the controller, and the RO and DI ends of the first transceiver U1 are both electrically connected to the SSICK end of the controller; the A end of the first transceiver U1 is electrically connected to the sensor through the inductor L1, and the B end of the first transceiver U1 is electrically connected to the sensor through the inductor L2.

[0008] By adopting the above technical solution, when the MOD end of the controller outputs a high level, the first interface module is in a sending state, and the controller can send a signal to the sensor; when the MOD end of the controller outputs a low level, the first interface module is in a receiving state, and the controller can receive the signal sent by the sensor.

[0009] Preferably, the first interface module further includes a protector TVS1, pin 1 of the protector TVS1 is electrically connected to the B end of the first transceiver U1, pin 2 of the protector TVS1 is electrically connected to the A end of the first transceiver U1, and pin 3 of the protector TVS1 is grounded.

[0010] By adopting the above technical solution and providing the protector TVS1, a certain protection effect can be provided to the first interface module, thereby improving the working stability of the first interface module.

[0011] Preferably, the second interface module includes a second transceiver U2, an inductor L3 and an inductor L4, the / RE terminal, DE terminal and DI terminal of the second transceiver U2 are all grounded, and the RO terminal of the second transceiver U2 is electrically connected to the SSIDA terminal of the controller; the A terminal of the second transceiver U2 is electrically connected to the sensor through the inductor L3, and the B terminal of the second transceiver U2 is electrically connected to the sensor through the inductor L4.

[0012] By adopting the above technical solution, by grounding the / RE terminal of the second transceiver U2, the second interface module can always be in the receiving state, so that the controller does not need to control the second interface module to be in the receiving state.

[0013] Preferably, the second interface module further includes a protector TVS2, pin 1 of the protector TVS2 is electrically connected to the B end of the second transceiver U2, pin 2 of the protector TVS2 is electrically connected to the A end of the second transceiver U2, and pin 3 of the protector TVS2 is grounded.

[0014] By adopting the above technical solution and providing the protector TVS2, a certain protection effect can be provided to the second interface module, thereby improving the working stability of the second interface module.

[0015] Preferably, the third interface module includes a third transceiver U3, an inductor L5 and an inductor L6, the / RE and DE ends of the third transceiver U3 are electrically connected to the IOEn end of the controller, the RO end of the third transceiver U3 is electrically connected to the HOME end of the controller, the RO end of the third transceiver U3 is also electrically connected to the IORx end of the controller, and the DI end of the third transceiver U3 is electrically connected to the IOTx end of the controller; the A end of the third transceiver U3 is electrically connected to the sensor through the inductor L5, and the B end of the third transceiver U3 is electrically connected to the sensor through the inductor L6.

[0016] By adopting the above technical solution, when the IOEn terminal of the controller outputs a high level, it is in the sending state, and the IOTx terminal of the controller outputs information to the sensor through the third interface module; when the IOEn terminal of the controller outputs a low level, it is in the receiving state, and the data signal collected by the sensor is input to the IORx terminal of the controller through the third interface module.

[0017] Preferably, the third interface module further includes a protector TVS3, pin 1 of the protector TVS3 is electrically connected to the B end of the third transceiver U3, pin 2 of the protector TVS3 is electrically connected to the A end of the third transceiver U3, and pin 3 of the protector TVS3 is grounded.

[0018] By adopting the above technical solution and providing the protector TVS3, a certain protection effect can be provided to the third interface module, thereby improving the working stability of the third interface module.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. By providing multiple interface modules electrically connected to the controller and sensors, the interface circuit can flexibly switch between different operating modes based on the signals output by the controller, thereby meeting diverse application requirements and improving the versatility and adaptability of the interface circuit;

[0021] 2. The modular design simplifies the circuit structure, facilitates maintenance and upgrades, and improves the reliability and stability of the system;

[0022] 3. By setting a protector TVS in the interface module, the present invention can effectively resist the influence of external interference and voltage fluctuation on the circuit, ensuring the accuracy and stability of data transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a principle block diagram of an embodiment of the present application;

[0024] Figure 2is a circuit diagram of the first interface module in an embodiment of the present application;

[0025] Figure 3 is a circuit diagram of the second interface module in an embodiment of the present application;

[0026] Figure 4 This is a circuit diagram of the third interface module in an embodiment of the present application. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-4 This application is described in further detail.

[0028] The embodiment of the present application discloses a multifunctional digital sensor interface circuit.

[0029] Reference Figure 1 A multifunctional digital sensor interface circuit includes a controller and three interface modules, which are respectively configured as a first interface module, a second interface module and a third interface module, and a plurality of connection terminals of the controller are electrically connected to corresponding connection terminals of the sensor through the first interface module, the second interface module and the interface module. The connection terminals of the controller can output different control signals, send signals or receive signals, and the interface module can be in a sending state or a receiving state according to the received control signal. When the interface module is in the sending state, the controller outputs a signal to the sensor through the interface module; when the interface module is in the receiving state, the sensor outputs a signal to the controller through the interface module, thereby enabling the application to realize multiple interface functions through multiple interface modes in different states, and the multiple interface functions include sensor interface function, ECD encoder function and IOLink function.

[0030] refer to Figure 2The first interface module includes a first transceiver U1, an inductor L1, an inductor L2 and a protector TVS1, and this embodiment also includes a power supply. The VCC terminal of the first transceiver U1 is electrically connected to the output terminal VCC of the power supply, and the ground terminal of the first transceiver U1 is grounded. The / RE terminal and DE terminal of the first transceiver U1 are both electrically connected to the MOD terminal of the controller through a resistor R1, and the RO terminal and DI terminal of the first transceiver U1 are both electrically connected to the SSICK terminal of the controller through a resistor R2. The A terminal of the first transceiver U1 is electrically connected to one end of the inductor L1, and the other end of the inductor L1 is set as the first input and output terminal of the first interface module, and the first input and output terminal of the first interface module is electrically connected to the sensor. The B terminal of the first transceiver U1 is electrically connected to one end of the inductor L2, and the other end of the inductor L2 is set as the second input and output terminal of the first interface module, and the second input and output terminal of the first interface module is electrically connected to the sensor. Pin 1 of the protector TVS1 is electrically connected to the B terminal of the first transceiver U1 , pin 2 of the protector TVS1 is electrically connected to the A terminal of the first transceiver U1 , and pin 3 of the protector TVS1 is grounded.

[0031] The / RE pin of the first transceiver U1 is an enable pin. When the / RE pin receives a high level, the driver in transceiver U1 operates and the receiver is disabled, placing the first interface module in a transmit state. The SSICK pin receives the controller's output signal, and terminals A and B can output signals to the sensor. When the / RE pin receives a low level, the receiver in transceiver U1 operates and the driver is disabled, placing the first interface module in a receive state. The sensor outputs signals to terminals A and B, and the SSICK pin receives signals.

[0032] The second interface module includes a second transceiver U2, an inductor L3, an inductor L4 and a protector TVS2. The electrical connection methods of the various components of the second interface module and the first interface module are similar, with the difference that: the / RE terminal, DE terminal and DI terminal of the second transceiver U2 are all grounded, and the RO terminal of the second transceiver U2 is electrically connected to the SSIDA terminal of the controller through a resistor R3, and the second interface module is always in a receiving state.

[0033] When the MOD end of the controller outputs a high level, the first interface module is in the sending state. At this time, the SSICK end of the controller outputs a signal, so that the first interface module outputs a differential clock signal to the sensor; the sensor outputs a differential data signal to the second interface module based on the received differential clock signal, and the SSIDA end of the controller receives the differential data signal through the second transceiver U2, thereby realizing the sensor interface function.

[0034] The third interface module includes a third transceiver U3, an inductor L5, an inductor L6, and a protector TVS3. The electrical connections of the components of the third interface module are similar to those of the second interface module, with the following differences: the / RE and DE terminals of the third transceiver U3 are electrically connected to the IOEn terminal of the controller via resistor R4, and the RO terminal of the third transceiver U3 is electrically connected to the HOME terminal of the controller via resistor R5. The RO terminal of the third transceiver U3 is also electrically connected to the IORx terminal of the controller via resistor R6, and the DI terminal of the third transceiver U3 is electrically connected to the IOTx terminal of the controller via resistor R7.

[0035] When the IOEn terminal of the controller outputs a high level, it is in the sending state, and the IOTx terminal of the controller outputs information to the sensor through the third interface module; when the IOEn terminal of the controller outputs a low level, it is in the receiving state, and the data signal collected by the sensor is input to the IORx terminal of the controller through the third interface module, thereby realizing the IOLink function.

[0036] When the controller's MOD and IOEn terminals both output a low level, and the controller's IOEn terminal outputs a high level, the first interface module, the second receiving module, and the third receiving module are all in the receiving state. The controller receives the sensor A channel signal through the first interface module, the sensor B channel signal through the second interface module, and the sensor R channel signal through the third interface module, thereby realizing the ECD encoder function.

[0037] The implementation principle of a multifunctional digital sensor transceiver circuit in an embodiment of the present application is: when the first interface module enters the sending state and the second interface module is in the receiving state, the sensor interface function is realized; if the first interface module, the second interface module and the third interface module are all switched to the receiving state, the system can execute the ECD encoder function at this time; if the controller independently controls the third interface module to perform sending or receiving operations, the system will start the IOLink function, so that this design significantly enhances the adaptability and operational flexibility of the digital sensor interface through the intelligent management of the controller, and realizes diversified functional applications.

[0038] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A multifunctional digital sensor interface circuit, characterized in that: It includes a controller and three interface modules, which are respectively set as a first interface module, a second interface module and a third interface module, and the multiple connection ends of the controller are electrically connected to the corresponding connection ends of the sensor through the first interface module, the second interface module and the third interface module respectively; the connection ends of the controller are used to output different control signals, send signals or receive signals, and the interface module can be in a sending state or a receiving state according to the received control signal; when the interface module is in the sending state, the controller outputs a signal to the sensor through the interface module; when the interface module is in the receiving state, the sensor outputs a signal to the controller through the interface module.

2. The multifunctional digital sensor interface circuit according to claim 1, characterized in that: The first interface module includes a first transceiver U1, an inductor L1 and an inductor L2. The / RE and DE terminals of the first transceiver U1 are electrically connected to the MOD terminal of the controller, and the RO and DI terminals of the first transceiver U1 are both electrically connected to the SSICK terminal of the controller; the A terminal of the first transceiver U1 is electrically connected to the sensor through the inductor L1, and the B terminal of the first transceiver U1 is electrically connected to the sensor through the inductor L2.

3. The multifunctional digital sensor interface circuit according to claim 2, characterized in that: The first interface module further includes a protector TVS1, wherein pin 1 of the protector TVS1 is electrically connected to the B terminal of the first transceiver U1, pin 2 of the protector TVS1 is electrically connected to the A terminal of the first transceiver U1, and pin 3 of the protector TVS1 is grounded.

4. The multifunctional digital sensor interface circuit according to claim 1, characterized in that: The second interface module includes a second transceiver U2, an inductor L3 and an inductor L4. The / RE, DE and DI terminals of the second transceiver U2 are all grounded, and the RO terminal of the second transceiver U2 is electrically connected to the SSIDA terminal of the controller; the A terminal of the second transceiver U2 is electrically connected to the sensor through the inductor L3, and the B terminal of the second transceiver U2 is electrically connected to the sensor through the inductor L4.

5. The multifunctional digital sensor interface circuit according to claim 4, characterized in that: The second interface module further includes a protector TVS2, wherein pin 1 of the protector TVS2 is electrically connected to the B end of the second transceiver U2, pin 2 of the protector TVS2 is electrically connected to the A end of the second transceiver U2, and pin 3 of the protector TVS2 is grounded.

6. The multifunctional digital sensor interface circuit according to claim 1, characterized in that: The third interface module includes a third transceiver U3, an inductor L5 and an inductor L6. The / RE and DE terminals of the third transceiver U3 are electrically connected to the IOEn terminal of the controller, the RO terminal of the third transceiver U3 is electrically connected to the HOME terminal of the controller, the RO terminal of the third transceiver U3 is also electrically connected to the IORx terminal of the controller, and the DI terminal of the third transceiver U3 is electrically connected to the IOTx terminal of the controller; the A terminal of the third transceiver U3 is electrically connected to the sensor through the inductor L5, and the B terminal of the third transceiver U3 is electrically connected to the sensor through the inductor L6.

7. The multifunctional digital sensor interface circuit according to claim 6, characterized in that: The third interface module further includes a protector TVS3, wherein pin 1 of the protector TVS3 is electrically connected to the B end of the third transceiver U3, pin 2 of the protector TVS3 is electrically connected to the A end of the third transceiver U3, and pin 3 of the protector TVS3 is grounded.

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