An indicator light display circuit and method having a memory function

Abstract

The application discloses a kind of indicator light display circuit and method with memory function, including signal state monitoring unit, memory unit, indicator light driving unit and indicator light body, method includes step one, design circuit unit;Step two, circuit wiring and debugging;Step three, circuit signal state monitoring;Step four, monitoring data storage;Step five, monitoring data visualization;In the step one, memory unit is a certain number of storage locations of memory, can use volatile memory or non-volatile memory, can be realized using programmable logic device, compared with the existing circuit board card indicator light, a small amount of indicator light can be used to display multiple sets of state data at different times, greatly increase the number of states that can be indicated, while designed with memory function, can display key historical state, this method is very helpful to improve the state monitoring and fault diagnosis capability of circuit board card.

Description

Technical Field

[0001] This invention relates to the field of circuit board indicator light technology, specifically to an indicator light display circuit and method with memory function. Background Technology

[0002] Circuit boards typically have several status indicator lights to indicate their operating status, facilitating the determination of their working status or the diagnosis of faults. However, due to the limited display area of ​​a circuit board, the number of indicator lights that can be placed is limited, resulting in a limited range of operating statuses that can be displayed. This is not conducive to a comprehensive observation of the circuit board's operating status. Furthermore, existing indicator lights do not have memory capabilities and can only display the current operating status. When a fault occurs, it is not possible to trace back the process of the problem, which is not conducive to troubleshooting and analysis. Summary of the Invention

[0003] The purpose of this invention is to provide an indicator light display circuit and method with memory function to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an indicator light display circuit with memory function, comprising a signal status monitoring unit, a memory unit, an indicator light driving unit, and an indicator light body, wherein the output terminal of the signal status monitoring unit is electrically connected to the memory unit, the output terminal of the memory unit is electrically connected to the indicator light driving unit, and the output terminal of the indicator light driving unit is electrically connected to the indicator light body.

[0005] A method for using an indicator light display circuit with memory function includes: Step 1, designing the circuit unit; Step 2, wiring and debugging the circuit; Step 3, monitoring the circuit signal status; Step 4, storing the monitoring data; and Step 5, visualizing the monitoring data.

[0006] In step one above, the signal status monitoring unit, memory unit and indicator light driving unit are designed inside the programmable logic device, and then the programmable logic device is designed on the circuit board. At the same time, m indicator light bodies are arranged on the circuit board.

[0007] In step two above, the status signals that the circuit board needs to monitor and display are analyzed and determined, and then connected to the input pin of the signal status monitoring unit of the circuit through a line. The data width and storage capacity of the memory unit can be adjusted according to the number of status signals to be monitored and displayed, thus completing the integration with the circuit board.

[0008] In step three above, the circuit board is started to put it into working state. The signal status monitoring unit can continuously monitor 2×m key status signals from the circuit board at the same time. Whenever a change is found in one or more status signals, a data with 2×m bits is generated. Each bit of the data corresponds to the current status value of a monitored signal. The data is sent to the memory unit for storage.

[0009] In step four above, when the memory unit receives the first data from the signal status monitoring unit, it stores it in the storage location with sequence number 1; when the memory unit receives the second data from the signal status monitoring unit, it stores it in the storage location with sequence number 2; and so on, storing data sequentially until n storage locations are filled, at which point storing new data stops.

[0010] In step five above, the indicator light driving unit first drives the indicator light body to display the initial state, indicating the start of a new display cycle. Then, the indicator light driving unit reads the data in the storage location with sequence number 1 from the memory unit, displays the high m bits of the data on the indicator light body for a period of time, and then displays the low m bits of the data on the indicator light body for a period of time. Then, the indicator light driving unit retrieves the data in the storage locations with sequence numbers 2 to n from the memory unit in sequence and displays them on the indicator light body using the aforementioned method. Finally, the indicator light driving unit repeats this process and continues in a loop.

[0011] Preferably, in step one, the signal status monitoring unit is a receiving unit with multiple signal inputs, which can be implemented using programmable logic circuit devices.

[0012] Preferably, in step one, the memory unit is a memory with a certain number of storage locations, which can be a volatile memory or a non-volatile memory, and can be implemented using a programmable logic device.

[0013] Preferably, in step one, the indicator light driving unit is a functional unit that reads data from the memory unit and drives the indicator light body to display the data. The indicator light driving unit can display multiple data in the memory unit one by one, in a cycle, and in a time-sharing manner, so as to achieve the effect of displaying multiple data using a small number of indicator lights.

[0014] Preferably, in step one, the number of signals indicated by the indicator light body is 2×m, and the number of bits of data that can be memorized is 2×m.

[0015] Preferably, in step five, the number of bits of data read by the indicator light driver unit from the memory unit is 2×m.

[0016] Compared with the prior art, the beneficial effects of the present invention are: compared with the existing circuit board indicator lights, the present invention can use a small number of indicator lights to cycle and display multiple sets of status data at different times, which greatly increases the number of states that can be indicated. At the same time, it is designed with a memory function to display key historical states. This method is of great help to improve the status monitoring and fault diagnosis capabilities of circuit boards. Attached Figure Description

[0017] Figure 1 This is a block diagram of the unit of the present invention;

[0018] Figure 2 This is a flowchart of the signal status monitoring and data storage of the present invention;

[0019] Figure 3 This is a flowchart of the indicator light display process of the present invention;

[0020] Figure 4 This is a flowchart of the method of the present invention;

[0021] In the diagram: 1. Signal status monitoring unit; 2. Memory unit; 3. Indicator light driving unit; 4. Indicator light body. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1 An embodiment of the present invention provides an indicator light display circuit with memory function, comprising a signal status monitoring unit 1, a memory unit 2, an indicator light driving unit 3, and an indicator light body 4. The output terminal of the signal status monitoring unit 1 is electrically connected to the memory unit 2, the output terminal of the memory unit 2 is electrically connected to the indicator light driving unit 3, and the output terminal of the indicator light driving unit 3 is electrically connected to the indicator light body 4.

[0024] Please see Figure 2-4 The present invention provides an embodiment of a method for using an indicator light display circuit with memory function, comprising: step one, designing the circuit unit; step two, wiring and debugging the circuit; step three, monitoring the circuit signal status; step four, storing the monitoring data; and step five, visualizing the monitoring data.

[0025] In step one above, the signal status monitoring unit 1, memory unit 2, and indicator light driving unit 3 are designed within a programmable logic device (PLD), which is then mounted on a circuit board. Simultaneously, m indicator light bodies 4 are arranged on this circuit board, resulting in 2×m signals indicated by each indicator light body 4, and the number of data bits that can be stored is 2×m. The signal status monitoring unit 1 is a receiving unit with multiple signal inputs and can be implemented using a PLD. The memory unit 2 is a memory with a certain number of storage locations, which can be either volatile or non-volatile memory and can be implemented using a PLD. The indicator light driving unit 3 is a functional unit that reads data from the memory unit 2 and drives the indicator light bodies 4 to display that data. The indicator light driving unit 3 can display multiple data points in the memory unit 2 sequentially, cyclically, and in a time-division manner, achieving the effect of displaying multiple data points using a small number of indicator lights.

[0026] In step two above, the status signals that the circuit board needs to monitor and display are analyzed and determined, and then connected to the input pin of the signal status monitoring unit 1 of the circuit through a line. The data width and storage capacity of the memory unit 2 can be adjusted according to the number of status signals to be monitored and displayed, thus completing the integration with the circuit board.

[0027] In step three above, the circuit board is started to put it into working state. The signal status monitoring unit 1 can continuously monitor 2×m key status signals from the circuit board at the same time. Whenever a change is found in one or more status signals, a data with 2×m bits is generated. Each bit of the data corresponds to the current status value of a monitored signal. The data is sent to the memory unit 2 for storage.

[0028] In step four above, when memory unit 2 receives the first data sent by signal status monitoring unit 1, it stores it in the storage location with sequence number 1; when memory unit 2 receives the second data sent by signal status monitoring unit 1, it stores it in the storage location with sequence number 2; and so on, storing data in this order until n storage locations are filled, then stopping the storage of new data.

[0029] In step five above, the indicator light driving unit 3 first drives the indicator light body 4 to display the initial state, indicating the start of a new display cycle. Then, the indicator light driving unit 3 reads the data in the storage location with sequence number 1 from the memory unit 2. The number of bits of the data read by the indicator light driving unit 3 from the memory unit 2 is 2×m. The high m bits of the data are displayed on the indicator light body 4 for a period of time, and then the low m bits of the data are displayed on the indicator light body 4 for a period of time. Then, the indicator light driving unit 3 retrieves the data in the storage locations with sequence numbers 2 to n from the memory unit 2 in sequence and displays them on the indicator light body 4 using the aforementioned method. Finally, the indicator light driving unit 3 repeats this process and continues in a loop.

[0030] Based on the above, the advantages of this invention are that, when used, the number of signals monitored by the signal status monitoring unit 1 can be increased under the premise of a limited number of indicator light bodies 4. The change process of the signals monitored by the signal status monitoring unit 1 can also be stored through the memory unit 2. This solution can complete the on-site fault diagnosis of the circuit board without adding a communication interface and special equipment, which greatly improves the testability, maintainability and availability of the circuit board. After a fault occurs, the indicator light driving unit 3 can read the monitoring data stored in the memory unit 2 and drive the indicator light body 4 to display the signal status represented by the monitoring data, thereby quickly locating the cause of the fault and improving the circuit board, achieving a rapid improvement in reliability. The indicator light driving unit 3 and the indicator light body 4 can cycle through the data stored in the memory unit 2, or they can start displaying the data stored in the memory unit 2 after being triggered by an external signal, or they can start displaying one piece of data stored in the memory unit 2 after being triggered by an external signal.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A method of using an indicator light display circuit with memory function, the indicator light display circuit comprising a signal status monitoring unit (1), a memory unit (2), an indicator light driving unit (3), and an indicator light body (4), characterized in that: The output of the signal status monitoring unit (1) is electrically connected to a memory unit (2), the output of the memory unit (2) is electrically connected to an indicator light driving unit (3), and the output of the indicator light driving unit (3) is electrically connected to an indicator light body (4). The usage method includes step one, designing the circuit unit; step two, circuit wiring and debugging; step three, monitoring the circuit signal status; step four, monitoring data storage; and step five, monitoring data visualization. Its features are: In step one above, the signal status monitoring unit (1), memory unit (2) and indicator light driving unit (3) are designed in the programmable logic device, and then the programmable logic device is designed on the circuit board. At the same time, m indicator light bodies (4) are arranged on the circuit board. In step two above, the status signals that the circuit board needs to monitor and display are analyzed and determined, and connected to the input pin of the signal status monitoring unit (1) of the circuit through a line. The data width and storage quantity of the memory unit (2) can be adjusted according to the number of status signals to be monitored and displayed, and the integration with the circuit board is completed. In step three above, the circuit board is started and put into working state. The signal status monitoring unit (1) can continuously monitor 2×m key status signals from the circuit board at the same time. Whenever a change is found in one or more status signals, a data with 2×m bits is generated. Each bit of the data corresponds to the current status value of a monitored signal. The data is sent to the memory unit (2) for storage. In step four above, when the memory unit (2) receives the first data sent by the signal status monitoring unit (1), it stores it in the storage location with sequence number 1; when the memory unit (2) receives the second data sent by the signal status monitoring unit (1), it stores it in the storage location with sequence number 2; and so on, storing data in this order until n storage locations are filled, and then stopping the storage of new data. In step five above, the indicator light driving unit (3) first drives the indicator light body (4) to display the initial state, indicating the start of a new display cycle. Then, the indicator light driving unit (3) reads the data in the storage location with sequence number 1 from the memory unit (2), displays the high m bits of the data in the indicator light body (4) for a period of time, and then displays the low m bits of the data in the indicator light body (4) for a period of time. Then, the indicator light driving unit (3) retrieves the data in the storage locations with sequence numbers 2 to n from the memory unit (2) in sequence and displays them in the indicator light body (4) using the aforementioned method. Finally, the indicator light driving unit (3) repeats this process and continues in a loop.

2. The method of using the display circuit of claim 1, wherein: In step one, the signal status monitoring unit (1) is a receiving unit with multiple signal inputs, implemented using programmable logic circuit devices.

3. The method of using the display circuit of claim 1, wherein: In step one, the memory unit (2) is a memory with a certain number of storage locations, which is either a volatile memory or a non-volatile memory and is implemented using a programmable logic device.

4. The method of using the display circuit for indicator light with memory function according to claim 1, wherein: In step one, the indicator light driving unit (3) is a functional unit that reads data from the memory unit (2) and drives the indicator light body (4) to display the data. The indicator light driving unit (3) displays multiple data in the memory unit (2) one by one, in a cycle, and in a time-sharing manner, so as to achieve the effect of displaying multiple data using a small number of indicator lights.

5. The method of using the display circuit for indicator light with memory function according to claim 1, wherein: In step one, the number of signals indicated by the indicator light body (4) is 2×m, and the number of bits of the stored data is 2×m.

6. The method of using a display circuit for an indicator light with memory function according to claim 1, wherein: In step five, the number of bits of data read by the indicator light driving unit (3) from the memory unit (2) is 2×m.

Images