TWI494935B - Data stream processing device with high reliability - Google Patents

Description

High-reliability data and data stream processing device

The invention relates to a data and data stream processing device, in particular to a device with high reliability data and data stream processing.

The development of electronic technology and communication technology has created a convenient life, but it also has a complicated electromagnetic noise environment, which easily causes interference to electronic devices. In particular, when the storage device performs a write operation, noise interference or its power supply instability may cause data writing errors.

Or, electromagnetic interference can easily cause a program running error to the embedded device, and the device operates. The solution is to count the counter of the controller for a fixed period, and reset the counter to zero when the program runs. When the program runs incorrectly, the counter cannot be reset to zero, causing the counter to overflow and trigger. The controller resets the action and returns the program to normal operation.

However, the above method still has defects, because the clock source of the counter is the same as that of the controller. If the controller fails to operate normally due to the error of the clock, the counter will be invalidated and the controller will not be reset.

On the other hand, in the communication, when the two devices are simultaneously transmitted, it is easy to cause the message to be missed or wrong, and it may also cause the system to run incorrectly, and there is a need for resetting.

In view of this, the main object of the present invention is to provide a device with high reliability data and data stream processing, which can effectively reset the system when the system runs incorrectly, and provide high-reliability data stream communication and data storage.

A high-reliability data and data stream processing device includes: a communication module for communicating at least one external device; a storage module for storing communication data of the communication module; and a control unit for controlling the communication module and The storage module sends out a clear signal within a certain time; the counting unit is electrically connected to the control unit, and if the clear signal is received before the overflow of the count, the zero count is returned, and if the clear signal is not received when the overflow occurs, Resetting the control unit; and a power source for powering the processing device.

Preferred embodiments of the invention and their efficacy are described below in conjunction with the drawings.

Specific examples are given below to explain the contents of the present invention in detail, and are illustrated by the accompanying drawings. The symbols mentioned in the description are referred to the pictograms.

Referring to Fig. 1, there is shown a block diagram of a first embodiment of the present invention. The data and data stream processing device of the embodiment of the invention comprises a communication module 1, a storage module 2, a control unit 3, a counting unit 4 and a power source 5. The communication module 1 is configured to communicate with at least one external device. The storage module 2 is configured to store the communication data of the communication module 1. The control unit 3 is configured to control the communication module 1 and the storage module 2, and sends a clear signal 31 at the end of the loop main program (Run Robin). The counting unit 4 is electrically connected to the control unit 3. If the clear signal 31 is received before the counting overflow, the resetting is performed. If the clear signal 31 is not received when the overflow occurs, the reset signal 41 is issued to reset the control unit. 3. The power source 5 is used to supply power to the processing device.

The communication module 1 can include an uplink communication unit and a downlink communication unit. The control unit 3 controls the communication module 1 in a time division multiplexing mode, and can simultaneously control the uplink communication unit and the downlink communication unit to communicate with two external devices. And avoid communicating with one of the external devices and missing the message of the other external device. The communication interface of the communication module 1 can be UART, SPI, GPIO, USB, but the invention is not limited thereto.

In essence, the control unit 3 can be a single chip, and the communication with the communication module 1 can be performed in the interrupt service of the communication interface, and the data communicated is processed in a time interrupt subroutine. In the same way, the more lengthy procedures can be carried out in a time-sharing manner to achieve the effect of multiplex. The control unit 3 preferably sends a clear signal 31 at the very end of the main program to make the program run more stable. However, it should be avoided to send the clear signal 31 in the interrupt subroutine so as not to interrupt the normal operation of the subprogram and return to the zero count unit 4, but the main program has an abnormality, and the control unit 3 cannot be reset.

The storage module 2 can include a first non-volatile memory and a second non-volatile memory. The first non-volatile memory includes a first storage space and a second storage space for storing the inspection code of the data and the data. When the first storage space of the first non-volatile memory is full, the first non-volatile memory is backed up to the second non-volatile memory, and the subsequent data is stored in the second storage space. Here, the first non-volatile memory may be an electronically erasable memory (EEPROM), and the second non-volatile memory may be a flash memory (FLASH ROM).

Please refer to FIG. 2, which is a block diagram of a second embodiment of the present invention. The data and data stream processing device of the embodiment of the present invention further includes the volatile memory 6 and the backup source module 7 as described in the first embodiment. Volatile memory 6 contains a data area and an indicator area. The data area stores the information of the communication module 1 communication and generates the corresponding inspection code based on the data. The indicator area also stores the same inspection code and data index. The check code stored in the data area and the index area of the volatile memory 6 can be compared by the check code to confirm the correctness of the data stored in the volatile memory 6. Here, the volatile memory 6 is preferably a static memory (SRAM).

The backup source module 7 supplies power to the volatile memory 6 when the power source 5 fails. The backup source module 7 includes a backup power supply and a power sensing unit. The power sensing unit senses the power supply state of the power source 5, and activates the backup power source when the power source 5 fails to supply power to the volatile memory 6, so that the volatile memory 6 can maintain the stored data. Here, the backup power source may preferably be a gold capacitor or a battery. The power source 5 is electrically connected to the backup power source to charge the backup power source when the power source 5 has not failed.

In this embodiment, the storage module 2 preferably includes two first non-volatile memory 21 and two second non-volatile memory 22. Each of the first non-volatile memory 21 stores the communication data of the communication module 1 and generates a corresponding inspection code according to the data, and the first non-volatile memory is stored with each other when the first non-volatile memory is stored. At a specific capacity, the two first non-volatile memories are backed up to the second non-volatile memory, respectively. Here, the capacity of the first non-volatile memory 21 is lower than that of the second non-volatile memory 22, and the number of reading and writing of the first non-volatile memory 21 is higher than that of the second non-volatile memory 22.

For example, the first non-volatile memory 21 has two pages of storage space, and when the data is filled with the first page, the stored data is backed up to the second non-volatile memory 22, and if other materials are needed Save and save to the second page. Accordingly, the number of writes of the second non-volatile memory 22 can be effectively reduced, and the service life thereof can be prolonged.

The control unit 3 successively stores the data communicated by the communication module 1 to the volatile memory 6 and the second non-volatile memory 21, thereby having a triple data backup. When the control unit 3 checks that the data stored in the volatile memory 6 is incorrect, the data can be restored from the first non-volatile memory 21. Alternatively, if one of the first non-volatile memory 21 fails or the stored data is incorrect, the data may be replaced or restored by the other first non-volatile memory 21, and the second non-volatile memory may be applied to the second non-volatile memory. twenty two. Therefore, even if the data and data stream processing device encounters noise interference or power interruption, the storage module 2 or the volatile memory 6 is written incorrectly, and the data is restored.

In summary, the high-reliability data and data stream processing device proposed by the present invention can be reset when the device is abnormal, and the composite memory is interactively backed up and operated in a time-division multiplex mode, which can achieve high reliability. Data and data stream processing.

Although the technical content of the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and any modifications and refinements made by those skilled in the art without departing from the spirit of the present invention are encompassed by the present invention. The scope of protection of the present invention is therefore defined by the scope of the appended claims.

1‧‧‧Communication module

2‧‧‧Storage module

21‧‧‧First non-volatile memory

22‧‧‧Second non-volatile memory

3‧‧‧Control unit

31‧‧‧Clear signal

4‧‧‧counting unit

41‧‧‧Reset signal

5‧‧‧Power supply

6‧‧‧ volatile memory

7‧‧‧Resource module

Figure 1 is a block diagram of a first embodiment of the present invention.

Figure 2 is a block diagram of a second embodiment of the present invention.

1. . . Communication module

2. . . Storage module

3. . . control unit

31. . . Clear signal

4. . . Counting unit

41. . . Reset signal

5. . . power supply

Claims (10)

A high-reliability data and data stream processing device includes: a communication module for communicating at least one external device; and a storage module for storing one of the communication module communication materials, comprising: two first Non-volatile memory for storing the data, the first non-volatile memories are stored with each other; and two second non-volatile memories are stored for a capacity of the first non-volatile memory Backing up to the second non-volatile memory respectively; a control unit for controlling the communication module and the storage module, and sending a clear signal at the end of a loop main program; a counting unit, Electrically connecting the control unit, if the clear signal is received before counting the overflow, returning to zero, if the clear signal is not received when the overflow occurs, resetting the control unit; and a power source for supplying power The processing device. The processing device of claim 1, wherein the first non-volatile memory has a lower capacity than the second non-volatile memory, and the first non-volatile memory has a higher read/write frequency than the second non-volatile memory Sexual memory. The processing device of claim 1, the first non-volatile memory may be an electronically erasable memory, and the second non-volatile memory may be a flash memory. The processing device of claim 1 further comprising a volatile memory storing the data communicated by the communication module and the check code of the data, the volatile memory comprising: a data area, storing the data and the checking Code; and An indicator area stores the indicator of the data and the check code. The processing device of claim 4, wherein the control unit compares the check code stored in the data area of the volatile memory with the index area to confirm the correctness of the data stored in the volatile memory, If the information is incorrect, the data is restored from the first non-volatile memory. The processing device of claim 4, further comprising: a standby source module for supplying the volatile memory when the power source fails. The processing device of claim 6, wherein the backup source module comprises: a backup power source for supplying power to the volatile memory; and a power sensing unit for sensing a power supply state of the power source, and the power source is The backup power is turned on when it fails. The processing device of claim 7, wherein the backup power source is a gold capacitor or a battery. The processing device of claim 7, wherein the backup power source is charged when the power source fails. The processing device of claim 1, wherein the control unit controls the communication module in a time division multiplexing manner to simultaneously communicate with the external devices.