Data transmission circuit and controller

Abstract

This utility model relates to the field of data synchronization technology and discloses a data transmission circuit and controller. The utility model includes: a power protection circuit comprising a power management unit and a power supply control unit; a communication protection circuit connected in the data transmission link between the control unit and the storage unit; a first terminal of the power supply control unit connected to the controller, a second terminal connected to the power management unit, and a third terminal connected to the storage unit; when the control unit sends a power-on signal to the power supply control unit, the power supply control unit is turned on, and the power management unit supplies power to the storage unit through the power supply control unit, enabling data transmission between the storage unit and the control unit. This utility model controls the power supply to the storage unit by the power management unit through the power supply control unit, and establishes a data transmission link between the storage unit and the control unit when the storage unit is connected to the controller, realizing the automatic transfer of data from the storage unit to the control unit, thereby improving the efficiency and accuracy of parameter configuration.

Description

Technical Field

[0001] This utility model relates to the field of data synchronization technology, and in particular to a data transmission circuit and controller. Background Technology

[0002] A controller failure can cause the entire system to lose its functionality. In such cases, the faulty controller needs to be replaced, and the parameter data from the original controller needs to be synchronized to the updated controller to enable parameter configuration. In related technologies, parameter data is typically input manually into the updated controller. However, this manual method is not only time-consuming and inefficient, but it also cannot prevent errors and omissions during the manual input process, leading to low accuracy in parameter configuration. Utility Model Content

[0003] The first technical problem solved by this invention is to provide a data transmission circuit that effectively addresses the issues of low efficiency and accuracy in configuring parameters of the updated controller.

[0004] The second technical problem solved by this invention is to provide a controller that effectively addresses the issues of low efficiency and accuracy in configuring parameters of an updated controller.

[0005] The first technical problem mentioned above is solved by the following technical solution:

[0006] A data transmission circuit is applied to a controller, which also includes a control unit and a storage unit.

[0007] The data transmission circuit includes:

[0008] The power protection circuit includes: a power management unit and a power supply control unit;

[0009] A communication protection circuit is connected in the data transmission link between the control unit and the storage unit;

[0010] Among them, the first end of the power supply control unit is connected to the controller, the second end is connected to the power management unit, and the third end is connected to the storage unit;

[0011] When the control unit sends a power-on signal to the power supply control unit, the power supply control unit is turned on, and the power management unit supplies power to the storage unit through the power supply control unit so that the storage unit and the control unit can transmit data.

[0012] Compared with the prior art, the data transmission circuit of this utility model has the following advantages: a communication protection circuit and a power protection circuit are connected between the control unit and the storage unit of the controller. The power management unit in the power protection circuit supplies power to the storage unit. The power supply signal sent by the control unit to the power supply control unit controls the power supply of the storage unit. Thus, when the storage unit is connected to the controller, a data transmission link is established between the storage unit and the control unit, realizing the automatic transfer of data from the storage unit to the control unit, thereby improving the efficiency and accuracy of parameter configuration. At the same time, the power protection circuit protects and controls the power supply to the storage unit, and the communication protection circuit protects the data transmission link between the control unit and the storage unit, thereby ensuring the security and reliability of data transmission between the control unit and the storage unit.

[0013] In one embodiment, the power management unit includes a first transistor, a second transistor, a first resistor, and a second resistor;

[0014] In this configuration, the first terminal of the first transistor is connected to one terminal of the first resistor and one terminal of the second resistor, the second terminal is connected to the power supply, and the third terminal is connected to the first terminal of the second transistor.

[0015] The second terminal of the second transistor is connected to the power supply, and the third terminal is connected to the second terminal of the power supply control unit.

[0016] The other end of the first resistor is connected to the power supply;

[0017] The other end of the second resistor is grounded.

[0018] In one embodiment, the power management unit further includes a third resistor and a fourth resistor;

[0019] One end of the third resistor is connected to both the third terminal of the first transistor and one end of the fourth resistor, while the other end of the third resistor is grounded.

[0020] The other end of the fourth resistor is connected to the first end of the second transistor.

[0021] In one embodiment, the power supply control unit includes a third transistor;

[0022] The first terminal of the third transistor is connected to the control unit, the second terminal is connected to the power management unit, and the third terminal is connected to the storage unit.

[0023] In one embodiment, the communication protection circuit includes a first protection unit and a second protection unit;

[0024] One end of the first protection unit is connected to the receiving port of the control unit, and the other end is connected to the transmitting port of the storage unit;

[0025] One end of the second protection unit is connected to the transmitting port of the control unit, and the other end is connected to the receiving port of the storage unit.

[0026] In one embodiment, the first protection unit includes a fourth transistor, a fifth transistor, a fifth resistor, a sixth resistor, a seventh resistor, and an eighth resistor;

[0027] Among them, the first terminal of the fourth transistor is connected to the transmit port of the memory cell and one end of the fifth resistor, the second terminal is connected to one end of the sixth resistor and one end of the seventh resistor, and the third terminal is grounded;

[0028] The first terminal of the fifth transistor is connected to the other terminal of the sixth resistor, the second terminal is connected to both the receiving port of the control unit and one terminal of the eighth resistor, and the third terminal is grounded.

[0029] The other end of the fifth resistor is connected to ground; the other end of the seventh resistor is connected to the other end of the eighth resistor and to the power supply.

[0030] In one embodiment, the first protection unit further includes a ninth resistor and a tenth resistor;

[0031] One end of the ninth resistor is connected to the transmit port of the memory cell, and the other end is connected to the first end of the fourth transistor.

[0032] One end of the tenth resistor is connected to the second end of the fifth transistor, and the other end is connected to the receiving port of the control unit.

[0033] In one embodiment, the second protection unit includes a sixth transistor, a seventh transistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, and a fourteenth resistor;

[0034] Among them, the first end of the sixth transistor is connected to the transmitting port of the control unit and one end of the eleventh resistor, the second end is connected to one end of the twelfth resistor and one end of the thirteenth resistor, and the third end is connected to ground.

[0035] The first terminal of the seventh transistor is connected to the other end of the twelfth resistor, the second terminal is connected to the receiving port of the memory cell and one end of the fourteenth resistor, and the third terminal is connected to ground.

[0036] The other end of the eleventh resistor is connected to ground; the other end of the thirteenth resistor is connected to the other end of the fourteenth resistor and to the power supply.

[0037] In one embodiment, the second protection unit further includes a fifteenth resistor and a sixteenth resistor;

[0038] One end of the fifteenth resistor is connected to the transmitting port of the control unit, and the other end is connected to the first end of the sixth transistor;

[0039] One end of the sixteenth resistor is connected to the second end of the seventh transistor, and the other end is connected to the receiver port of the memory cell.

[0040] The second technical problem mentioned above is solved by the following technical solution:

[0041] A controller includes a data transmission circuit as described in any of the above embodiments. Attached Figure Description

[0042] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram illustrating the application of a data transmission circuit according to this utility model.

[0044] Figure 2 This is a schematic diagram of the structure of a data transmission circuit according to this utility model;

[0045] Figure 3 This is a circuit diagram of a power protection circuit in a data transmission circuit according to this utility model;

[0046] Figure 4 This is a circuit diagram of a communication protection circuit in a data transmission circuit according to this utility model.

[0047] Explanation of reference numerals in the attached figures:

[0048] 1. Power protection circuit; 11. Power management unit; 12. Power supply control unit; 2. Communication protection circuit; 21. First protection unit; 22. Second protection unit. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0051] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0052] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0053] A controller failure can cause the entire system to lose its functionality. In such cases, the faulty controller needs to be replaced, and the parameter data from the original controller needs to be synchronized to the updated controller to enable parameter configuration. In related technologies, parameter data is typically input manually into the updated controller. However, this manual method is not only time-consuming and inefficient, but it also cannot prevent errors and omissions during the manual input process, leading to low accuracy in parameter configuration.

[0054] Based on this, the present invention provides a data transmission circuit applied to a controller, which also includes a control unit and a storage unit. The data transmission circuit includes: a power protection circuit, comprising a power management unit and a power supply control unit; and a communication protection circuit connected in the data transmission link between the control unit and the storage unit. The first end of the power supply control unit is connected to the controller, the second end is connected to the power management unit, and the third end is connected to the storage unit. When the control unit sends a power-on signal to the power supply control unit, the power supply control unit is turned on, and the power management unit supplies power to the storage unit through the power supply control unit, enabling data transmission between the storage unit and the control unit. Therefore, a communication protection circuit and a power protection circuit are connected between the controller's control unit and storage unit. The power management unit in the power protection circuit supplies power to the storage unit, and the power-on signal sent by the control unit to the power supply control unit controls the power supply to the storage unit. This establishes a data transmission link between the storage unit and the control unit when the storage unit is connected to the controller, enabling automatic data transfer from the storage unit to the control unit, thereby improving the efficiency and accuracy of parameter configuration. At the same time, the power protection circuit protects and controls the power supply to the storage unit, and the communication protection circuit protects the data transmission link between the control unit and the storage unit, ensuring the security and reliability of data transmission between the control unit and the storage unit.

[0055] Figure 1 This is a schematic diagram illustrating the application of a data transmission circuit according to this utility model. The data transmission circuit provided by this utility model can be applied to, for example... Figure 1 In the controller shown, the control unit is built into the controller, while the storage unit, as a component in the original controller, is connected to the controller via an IC socket to establish a communication connection with the control unit. The data transmission circuit is built into the controller, providing power and communication protection for both the control unit and the connected storage unit. Simultaneously, during data transmission and parameter configuration and recovery, the controller can display the current status to the user using LED lights, text prompts, and audible alarms, such as indicating "Recovering," "Recovery Complete," or "Checking if chip installation was successful."

[0056] The following is combined Figures 2 to 4 The following describes embodiments of the present invention.

[0057] According to an embodiment of the present invention, a data transmission circuit is provided that can be applied to a controller. The controller further includes a control unit and a storage unit. The control unit is the core data processing component in the controller, such as an MCU (Micro Controller Unit), and the storage unit is the component in the controller responsible for storing data, such as a memory chip. Figure 2This is a schematic diagram of a data transmission circuit according to this utility model, as shown below. Figure 2 As shown, the data transmission circuit includes: a power protection circuit 1, which provides power protection for the storage unit; and a communication protection circuit 2, which is connected in the data transmission link between the control unit and the storage unit, and is used to protect the data communication between the control unit and the storage unit.

[0058] In this embodiment, the power protection circuit 1 includes a power management unit 11 and a power supply control unit 12. The power management unit 11 supplies power to the storage unit, and the power supply control unit 12 controls the power management unit 11 to supply power to the storage unit based on power-on / off signals issued by the control unit. The first terminal of the power supply control unit 12 is connected to the controller, the second terminal is connected to the power management unit 11, and the third terminal is connected to the storage unit. When the control unit sends a power-on signal to the power supply control unit 12, the power supply control unit 12 is turned on, and the power management unit 11 supplies power to the storage unit through the power supply control unit 12, enabling data transmission between the storage unit and the control unit.

[0059] In one embodiment, Figure 3 This is a circuit diagram of a power protection circuit in a data transmission circuit according to this utility model, as shown below. Figure 3 As shown, in the power protection circuit 1, the power management unit 11 includes: a first transistor Q1, a second transistor Q2, a first resistor R1, and a second resistor R2. The first terminal of the first transistor Q1 is connected to one end of both the first resistor R1 and the second resistor R2; its second terminal is connected to the power supply; and its third terminal is connected to the first terminal of the second transistor Q2. The second terminal of the second transistor Q2 is connected to the power supply, and its third terminal is connected to the second terminal of the power supply control unit 12. The other terminal of the first resistor R1 is connected to the power supply; and the other terminal of the second resistor R2 is grounded.

[0060] In one embodiment, such as Figure 3 As shown, the first transistor Q1 and the second transistor Q2 are transistors, wherein the first terminal of the first transistor Q1 and the first terminal of the second transistor Q2 correspond to the base of the transistors, the second terminal of the first transistor Q1 and the second terminal of the second transistor Q2 correspond to the collector of the transistors, and the third terminal of the first transistor Q1 and the third terminal of the second transistor Q2 correspond to the emitter of the transistors. Furthermore, the first transistor Q1 and the second transistor Q2 are PNP type transistors.

[0061] In one embodiment, such as Figure 3 As shown, the second transistor Q2 serves as a device connecting the power supply and the power protection circuit. The switching on and off of the second transistor Q2 controls whether or not power is supplied to the memory cell.

[0062] In one embodiment, such as Figure 3As shown, the first resistor R1 and the second resistor R2 form a voltage divider circuit, which is linked with the first transistor Q1 to achieve voltage protection.

[0063] Specifically, the voltage at the first terminal of the first transistor Q1, i.e., the base voltage of the first transistor Q1, is equal to the voltage obtained by voltage division by the second resistor R2. When the voltage difference between the emitter voltage and the base voltage of the first transistor Q1 is greater than the threshold voltage, i.e., when the first transistor Q1 satisfies the emitter junction forward bias, the first transistor Q1 is turned on, making the base voltage of the second transistor Q2 equal to the power supply voltage (VCC), and the second transistor Q2 is turned off, cutting off the power supply to the memory cell. When the voltage difference between the emitter voltage and the base voltage of the first transistor Q1 is less than or equal to the threshold voltage, i.e., when the first transistor Q1 does not satisfy the emitter junction forward bias, the first transistor Q1 is turned off, making the base voltage of the second transistor Q2 0, and the second transistor Q2 is turned on, supplying power to the memory cell.

[0064] Since the voltage division ratio of the first resistor R1 and the second resistor R2 remains unchanged, the voltage difference between the emitter voltage and the base voltage of the first transistor Q1 will gradually increase as the power supply voltage increases. When the voltage difference between the emitter voltage and the base voltage reaches the threshold voltage, the first transistor Q1 is turned on and the second transistor Q2 is turned off, cutting off the power supply to the memory cell. This cuts off the power supply to the memory cell when the power supply voltage is too high, thus achieving power supply protection for the memory cell.

[0065] In one embodiment, the magnitude of the power supply voltage that triggers the power supply protection for the memory cell can be adjusted by setting the resistance values ​​of the first resistor R1 and the second resistor R2 or the voltage division ratio.

[0066] In one embodiment, such as Figure 3 As shown, the power management unit 11 also includes a third resistor R3 and a fourth resistor R4; the third resistor R3 and the fourth resistor R4 are current-limiting resistors used to protect the circuit safety of the power management unit 11. One end of the third resistor R3 is connected to the third terminal of the first transistor Q1 and one end of the fourth resistor R4, and the other end of the third resistor R3 is grounded; the other end of the fourth resistor R4 is connected to the first terminal of the second transistor Q2.

[0067] In one embodiment, such as Figure 3As shown, the power supply control unit 12 includes a third transistor Q3; the first terminal of the third transistor Q3 is connected to the control unit, the second terminal is connected to the power management unit 11, and the third terminal is connected to the memory cell. When the control unit sends a power-on signal (MEM_CTRL signal) to the first terminal of the third transistor Q3, the third transistor Q3 turns on. If the second transistor Q2 also turns on at this time, power is successfully supplied to the memory cell. Thus, the power supply control unit 12 controls the power supply of the memory chip to the power management unit 11.

[0068] In one embodiment, such as Figure 3 As shown, the power protection circuit 1 also includes a seventeenth resistor R17. One end of the seventeenth resistor R17 is connected to the control unit, and the other end is connected to the first terminal of the third transistor Q3. The seventeenth resistor R17 acts as a current-limiting resistor to protect the third transistor Q3 and prevent the current from exceeding the withstand range of the third transistor Q3.

[0069] In one embodiment, the third transistor Q3 is a bipolar transistor, wherein the first terminal of the third transistor Q3 corresponds to the base of the transistor, the second terminal of the third transistor Q3 corresponds to the collector of the transistor, and the third terminal of the third transistor Q3 corresponds to the emitter of the transistor. Furthermore, the third transistor Q3 is a PNP type transistor.

[0070] In one embodiment, after the control unit is powered on, it is determined whether the storage unit has been successfully installed in the controller; if the storage unit has been successfully installed in the controller, the control unit sends a power-on signal to the base of the third transistor Q3 to supply power to the storage unit, thereby enabling the storage unit to transfer the data stored therein to the control unit.

[0071] In one embodiment, Figure 4 This is a circuit diagram of a communication protection circuit in a data transmission circuit according to this utility model, as shown below. Figure 4 As shown, the communication protection circuit 2 includes a first protection unit 21 and a second protection unit 22. One end of the first protection unit 21 is connected to the receiving port of the control unit, and the other end is connected to the transmitting port of the storage unit. One end of the second protection unit 22 is connected to the transmitting port of the control unit, and the other end is connected to the receiving port of the storage unit. The first protection unit 21 and the second protection unit 22 respectively protect the bidirectional communication link between the control unit and the storage unit, thereby preventing high voltage from damaging the storage unit through the communication circuit from the control unit, and ensuring the communication safety between the control unit and the storage unit.

[0072] In one embodiment, such as Figure 4As shown, the first protection unit 21 includes a fourth transistor Q4, a fifth transistor Q5, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and an eighth resistor R8. The fifth resistor R5, sixth resistor R6, seventh resistor R7, and eighth resistor R8 act as current-limiting resistors. On the one hand, they protect the fourth transistor Q4 and the fifth transistor Q5 by preventing the current from exceeding their withstand range. On the other hand, they limit the current in the communication link when a high-voltage anomaly occurs, preventing excessive current from damaging the control unit and storage unit.

[0073] Specifically, the first terminal of the fourth transistor Q4 is connected to the transmit port of the memory cell and one end of the fifth resistor R5, the second terminal is connected to one end of the sixth resistor R6 and one end of the seventh resistor R7, and the third terminal is grounded; the first terminal of the fifth transistor Q5 is connected to the other end of the sixth resistor R6, the second terminal is connected to the receive port of the control unit and one end of the eighth resistor R8, and the third terminal is grounded; the other end of the fifth resistor R5 is grounded; the other end of the seventh resistor R7 is connected to the other end of the eighth resistor R8 and is connected to the power supply.

[0074] In one embodiment, such as Figure 4 As shown, the first protection unit 21 also includes a ninth resistor R9 and a tenth resistor R10; the ninth resistor R9 and the tenth resistor R10 serve as current-limiting resistors to protect the circuit safety of the communication circuit between the control unit and the storage unit. One end of the ninth resistor R9 is connected to the transmitting port of the storage unit, and the other end is connected to the first terminal of the fourth transistor Q4; one end of the tenth resistor R10 is connected to the second terminal of the fifth transistor Q5, and the other end is connected to the receiving port of the control unit.

[0075] In one embodiment, such as Figure 4 As shown, the second protection unit 22 includes a sixth transistor Q6, a seventh transistor Q7, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, and a fourteenth resistor R14. The eleventh resistor R11, twelfth resistor R12, thirteenth resistor R13, and fourteenth resistor R14 act as current-limiting resistors. On the one hand, they protect the sixth transistor Q6 and the seventh transistor Q7 by preventing the current from exceeding their withstand range. On the other hand, they limit the current in the communication link when a high-voltage anomaly occurs, preventing excessive current from damaging the control unit and storage unit.

[0076] Specifically, the first terminal of the sixth transistor Q6 is connected to the transmit port of the control unit and one end of the eleventh resistor R11, the second terminal is connected to one end of the twelfth resistor R12 and one end of the thirteenth resistor R13, and the third terminal is grounded; the first terminal of the seventh transistor Q7 is connected to the other end of the twelfth resistor R12, the second terminal is connected to the receive port of the storage unit and one end of the fourteenth resistor R14, and the third terminal is grounded; the other end of the eleventh resistor R11 is grounded; the other end of the thirteenth resistor R13 is connected to the other end of the fourteenth resistor R14 and is connected to the power supply.

[0077] In one embodiment, such as Figure 4 As shown, the second protection unit 22 also includes a fifteenth resistor R15 and a sixteenth resistor R16; the fifteenth resistor R15 and the sixteenth resistor R16 serve as current-limiting resistors to protect the circuit safety of the communication circuit between the control unit and the storage unit. One end of the fifteenth resistor R15 is connected to the transmitting port of the control unit, and the other end is connected to the first terminal of the sixth transistor Q6; one end of the sixteenth resistor R16 is connected to the second terminal of the seventh transistor Q7, and the other end is connected to the receiving port of the storage unit.

[0078] In one embodiment, such as Figure 4 As shown, transistors Q4, Q5, Q6, and Q7 are transistors. The first terminals of transistors Q4, Q5, Q6, and Q7 correspond to the base of the transistors; the second terminals of these transistors correspond to the collector; and the third terminals of these transistors correspond to the emitter. Furthermore, transistors Q4, Q5, Q6, and Q7 are NPN transistors.

[0079] In one embodiment, when the control unit communicates with the storage unit, the control unit initiates a parameter recovery algorithm to read all the parameter data stored in the storage chip and synchronously apply this parameter data to the control unit, thereby achieving automatic parameter configuration.

[0080] In one embodiment, a verification algorithm can be set in the control unit to verify the read parameter data during data transmission, ensuring the integrity of the read parameter data.

[0081] The data transmission circuit provided in this embodiment is applied to a controller, which also includes a control unit and a storage unit. The data transmission circuit includes a power protection circuit, comprising a power management unit and a power supply control unit; and a communication protection circuit connected in the data transmission link between the control unit and the storage unit. The power supply control unit has a first terminal connected to the controller, a second terminal connected to the power management unit, and a third terminal connected to the storage unit. When the control unit sends a power-on signal to the power supply control unit, the power supply control unit is activated, and the power management unit supplies power to the storage unit through the power supply control unit, enabling data transmission between the storage unit and the control unit. Thus, a communication protection circuit and a power protection circuit are connected between the control unit and the storage unit of the controller. The power management unit in the power protection circuit supplies power to the storage unit, and the power-on signal sent by the control unit to the power supply control unit controls the power management unit's power supply to the storage unit. This establishes a data transmission link between the storage unit and the control unit when the storage unit is connected to the controller, enabling automatic data transfer from the storage unit to the control unit, thereby improving the efficiency and accuracy of parameter configuration. Simultaneously, the power protection circuit protects and controls the power supply to the storage unit, and the communication protection circuit protects the data transmission link between the control unit and the storage unit, ensuring the security and reliability of data transmission between the control unit and the storage unit.

[0082] According to an embodiment of the present invention, another aspect provides a controller including the data transmission circuit as described in any of the above embodiments.

[0083] In one embodiment, such as Figures 1-4As shown, when a new controller is activated, the storage unit from the original controller is installed onto the IC socket of the new controller. After the new controller is powered on, the control unit identifies whether the storage unit is installed. Upon identification, it sends a power-on signal to the power supply control unit 12 to enable the power management unit 11 to supply power to the storage unit, thereby powering on the storage unit and enabling it to transmit data to the control unit. At this time, the control unit initiates a parameter recovery algorithm, reads all parameter data stored in the storage chip, and synchronously applies this parameter data to the control unit. Simultaneously, a verification algorithm is used during transmission to verify the read parameter data, ensuring its integrity. Throughout the parameter data synchronization and recovery process, the power protection circuit 1 and communication protection circuit 2 protect the storage unit based on the power supply voltage. If the power supply voltage exceeds the safe voltage range, the power protection circuit 1 cuts off the power supply to the storage unit, and the communication protection circuit 2 disconnects the communication link between the control unit and the storage unit to prevent data loss due to high voltage breakdown, thus improving the reliability of the data transmission circuit. After all parameter data synchronization and recovery are complete, the new controller automatically applies the synchronized parameters and displays a notification on the user interface indicating that the parameter recovery process is complete.

[0084] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0085] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A data transmission circuit, characterized by Applied to a controller, the controller further including a control unit and a storage unit; The data transmission circuit includes: The power protection circuit (1) includes: a power management unit (11) and a power supply control unit (12); A communication protection circuit (2) is connected in the data transmission link between the control unit and the storage unit; The first end of the power supply control unit (12) is connected to the controller, the second end is connected to the power management unit (11), and the third end is connected to the storage unit. When the control unit sends a power-on signal to the power supply control unit (12), the power supply control unit (12) is turned on, and the power management unit (11) supplies power to the storage unit through the power supply control unit (12) so that the storage unit can transmit data with the control unit.

2. The circuit of claim 1, wherein, The power management unit (11) includes a first transistor, a second transistor, a first resistor, and a second resistor; Wherein, the first terminal of the first transistor is connected to one end of the first resistor and one end of the second resistor, the second terminal is connected to the power supply, and the third terminal is connected to the first terminal of the second transistor; The second terminal of the second transistor is connected to the power supply, and the third terminal is connected to the second terminal of the power supply control unit (12); The other end of the first resistor is connected to the power supply; The other end of the second resistor is grounded.

3. The circuit of claim 2, wherein, The power management unit (11) also includes a third resistor and a fourth resistor; Wherein, one end of the third resistor is connected to both the third terminal of the first transistor and one end of the fourth resistor, and the other end of the third resistor is grounded; The other end of the fourth resistor is connected to the first end of the second transistor.

4. The circuit of claim 1, wherein, The power supply control unit (12) includes a third transistor; The first terminal of the third transistor is connected to the control unit, the second terminal is connected to the power management unit (11), and the third terminal is connected to the storage unit.

5. The circuit of claim 1, wherein, The communication protection circuit (2) includes a first protection unit (21) and a second protection unit (22); One end of the first protection unit (21) is connected to the receiving port of the control unit, and the other end is connected to the transmitting port of the storage unit; One end of the second protection unit (22) is connected to the transmitting port of the control unit, and the other end is connected to the receiving port of the storage unit.

6. The circuit of claim 5, wherein, The first protection unit (21) includes a fourth transistor, a fifth transistor, a fifth resistor, a sixth resistor, a seventh resistor, and an eighth resistor; The first terminal of the fourth transistor is connected to the transmission port of the memory cell and one end of the fifth resistor, the second terminal is connected to one end of the sixth resistor and one end of the seventh resistor, and the third terminal is grounded. The first end of the fifth transistor is connected to the other end of the sixth resistor, the second end is connected to the receiving port of the control unit and one end of the eighth resistor, and the third end is grounded. The other end of the fifth resistor is connected to ground; the other end of the seventh resistor is connected to the other end of the eighth resistor and is connected to the power supply.

7. The circuit of claim 6, wherein, The first protection unit (21) also includes a ninth resistor and a tenth resistor; One end of the ninth resistor is connected to the transmit port of the storage cell, and the other end is connected to the first end of the fourth transistor. One end of the tenth resistor is connected to the second end of the fifth transistor, and the other end is connected to the receiving port of the control unit.

8. The circuit of claim 5, wherein, The second protection unit (22) includes a sixth transistor, a seventh transistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, and a fourteenth resistor; The first terminal of the sixth transistor is connected to the transmitting port of the control unit and one terminal of the eleventh resistor, the second terminal is connected to one terminal of the twelfth resistor and one terminal of the thirteenth resistor, and the third terminal is connected to ground. The first terminal of the seventh transistor is connected to the other terminal of the twelfth resistor, the second terminal is connected to the receiving port of the memory cell and one terminal of the fourteenth resistor, and the third terminal is connected to ground. The other end of the eleventh resistor is connected to ground; the other end of the thirteenth resistor is connected to the other end of the fourteenth resistor and to the power supply.

9. The circuit of claim 8, wherein, The second protection unit (22) also includes a fifteenth resistor and a sixteenth resistor; One end of the fifteenth resistor is connected to the transmitting port of the control unit, and the other end is connected to the first end of the sixth transistor; One end of the sixteenth resistor is connected to the second end of the seventh transistor, and the other end is connected to the receiving port of the memory cell.

10. A controller characterized by comprising: Includes the data transmission circuit as described in any one of claims 1-9.

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