CN217932488U - Digital quantity output control device - Google Patents
Digital quantity output control device Download PDFInfo
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- CN217932488U CN217932488U CN202222160803.6U CN202222160803U CN217932488U CN 217932488 U CN217932488 U CN 217932488U CN 202222160803 U CN202222160803 U CN 202222160803U CN 217932488 U CN217932488 U CN 217932488U
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- microprocessor
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- digital quantity
- quantity output
- control device
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Abstract
The utility model provides a digital quantity output control device, include: the microprocessor is used for sending out a digital quantity output signal; the first photoelectric coupler is connected with the microprocessor and used for transmitting the digital output signal to external equipment; the second photoelectric coupler is connected with the microprocessor and is used for transmitting the digital input signal received by the external equipment to the microprocessor; the microprocessor is also used for comparing the digital output signal with the digital input signal and judging the digital output state of the microprocessor according to the comparison result. The utility model discloses a digital output control device is through carrying out back production and comparison to digital output signal, can discover digital output state fast high-efficiently, has effectively improved control system's reliability.
Description
Technical Field
The utility model relates to a technical field of digital output especially relates to a digital output controlling means.
Background
The control of digital quantity signals is widely applied to the automation field of industrial and intelligent industries. The correctness of the input and output signals is related to the overall reliability of the automatic control system. The digital output typically implements control of the field devices in accordance with control instructions issued by the controller.
In the prior art, the digital output usually adopts a one-way output to control the operation of the field device. When the field device fails in operation, the field device is required to be checked, and whether the output of the control module is normal is also required to be checked, so that the efficiency is low, and the labor cost is high.
SUMMERY OF THE UTILITY MODEL
In view of the above shortcomings in the prior art, an object of the present invention is to provide a digital output control device, which can quickly and efficiently find the output state of digital quantity by extracting and comparing the digital output signal, and effectively improve the reliability of the control system.
To achieve the above and other related objects, the present invention provides a digital quantity output control device, including: the microprocessor is used for sending out a digital quantity output signal; the first photoelectric coupler is connected with the microprocessor and used for transmitting the digital output signal to external equipment; the second photoelectric coupler is connected with the microprocessor and used for transmitting the digital quantity input signal received by the external equipment to the microprocessor; the microprocessor is also used for comparing the digital output signal with the digital input signal and judging the digital output state of the microprocessor according to the comparison result.
In an embodiment of the present invention, the digital quantity display device further includes an indicating device connected to the microprocessor for displaying the digital quantity output status of the microprocessor under the control of the microprocessor.
In an embodiment of the present invention, the indicating device employs an indicator light.
In an embodiment of the present invention, the digital quantity output device further comprises an upper computer, the upper computer is connected to the microprocessor, and is used for receiving the digital quantity output state sent by the microprocessor.
In an embodiment of the present invention, the upper computer communicates with the microprocessor through RS 485.
In an embodiment of the present invention, the microprocessor is configured to determine that the digital output state of the microprocessor is normal when the voltage state of the digital output signal and the voltage state of the digital input signal are reversed; and when the voltage state of the digital output signal is consistent with the voltage state of the digital input signal, judging that the digital output state of the microprocessor is abnormal.
In an embodiment of the present invention, the microprocessor sends the digital output signal based on an I/O interface.
In an embodiment of the present invention, the microprocessor includes at least one I/O interface, and the comparison between the digital output signal and the digital input signal is realized based on each I/O interface.
As described above, the digital quantity output control device of the present invention has the following beneficial effects:
(1) By extracting and comparing the digital quantity output signals, the digital quantity output abnormity can be quickly and efficiently found and an alarm can be given in time, so that the reliability of a control system is effectively improved;
(2) The output and the extraction of the digital quantity are isolated by the photoelectric coupler, so that the circuit structure is protected;
(3) The communication with an upper computer is realized through RS485, so that the anti-interference performance is strong;
(4) The practicability is strong, and the method can be applied to a plurality of scenes.
Drawings
Fig. 1 is a schematic structural diagram of a digital output control device according to an embodiment of the present invention.
Description of the element reference numerals
1. Microprocessor
2. First photoelectric coupler
3. Second photoelectric coupler
4. Indicating device
5. Upper computer
Detailed Description
The following description is given for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be apparent to those skilled in the art from the disclosure of the present invention.
It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are used for clarity of description only, and are not used to limit the scope of the present invention, and the relative relationship between the terms may be changed or adjusted without substantial technical changes.
The utility model discloses a digital output controlling means is through carrying out back production and comparison to digital output signal, can discover fast high-efficiently whether digital output state has unusually to in time send out the police dispatch newspaper when appearing unusually, effectively improved control system's reliability, have the practicality.
As shown in fig. 1, in one embodiment, the digital output control device of the present invention includes a microprocessor 1, a first photocoupler 2 and a second photocoupler 3.
The microprocessor 1 sends out a digital quantity output signal for controlling the external equipment.
And the first photoelectric coupler 2 is connected with the microprocessor 1 and transmits the digital output signal to external equipment. The photoelectric coupler transmits electric signals by taking light as a medium, and has a good isolation effect on input and output electric signals. The first photocoupler 2 realizes signal isolation between the microprocessor 1 and the external device.
And the second photoelectric coupler 3 is connected with the microprocessor 1 and transmits the digital quantity input signal received by the external equipment to the microprocessor 1. After the digital output signal sent by the microprocessor 1 is transmitted to the external equipment, the external equipment receives the corresponding digital input signal. The second photoelectric coupler 3 recovers the digital input signal and transmits the digital input signal to the microprocessor 1. Likewise, the second optocoupler 3 provides signal isolation between the microprocessor 1 and the external device.
The microprocessor 1 compares the sent digital output signal with the received digital input signal, and judges the digital output state of the microprocessor according to the comparison result. Specifically, the microprocessor 1 compares the voltage state of the digital output signal with the voltage state of the digital input signal; if the two are in reverse, the digital quantity output state of the microprocessor is normal; if the two are consistent, the digital quantity output state of the microprocessor is abnormal.
In an embodiment of the present invention, the digital output control device of the present invention further includes an indicating device 4, and the microprocessor 1 is connected to the indicating device, for displaying the digital output status of the microprocessor under the control of the microprocessor 1. Preferably, the indicating device 4 adopts an indicator light. Whether the digital quantity output state of the microprocessor is normal or not is indicated through the on and off of the indicator lights or different indication colors.
In an embodiment of the utility model, the utility model discloses a digital output control device still includes host computer 5, host computer 5 with microprocessor 1 links to each other, is used for receiving the digital output state that microprocessor 1 sent. Specifically, the upper computer 5 controls the microprocessor 1 to send the digital output signal and receive the digital output state sent by the microprocessor 1, so that the digital output of the microprocessor 1 is monitored in real time, and the abnormality can be conveniently found and processed timely and efficiently. Preferably, the upper computer 5 and the microprocessor 1 are communicated through RS485, so that the anti-interference performance is extremely high.
In an embodiment of the present invention, the microprocessor includes at least one I/O interface, and the microprocessor sends the digital output signal based on the I/O interface. Based on each I/O interface, the comparison between one path of digital output signal and one path of digital input signal can be realized. Therefore, multi-channel expansion can be carried out according to the number of the I/O interfaces of the microprocessor, so that the control of multi-channel digital quantity output is realized.
In summary, the digital output control device of the utility model can rapidly and efficiently find the digital output abnormity and alarm in time by extracting and comparing the digital output signals, thereby effectively improving the reliability of the control system; the output and the extraction of the digital quantity are isolated by the photoelectric coupler, so that the circuit structure is protected; the communication with an upper computer is realized through RS485, so that the anti-interference performance is strong; the practicability is strong, and the method can be applied to a plurality of scenes. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. A digital quantity output control device characterized by: the method comprises the following steps:
the microprocessor is used for sending out a digital quantity output signal;
the first photoelectric coupler is connected with the microprocessor and is used for transmitting the digital output signal to external equipment;
the second photoelectric coupler is connected with the microprocessor and used for transmitting the digital quantity input signal received by the external equipment to the microprocessor;
the microprocessor is also used for comparing the digital output signal with the digital input signal and judging the digital output state of the microprocessor according to the comparison result.
2. The digital quantity output control device according to claim 1, characterized in that: the digital quantity output device is connected with the microprocessor and used for displaying the digital quantity output state of the microprocessor under the control of the microprocessor.
3. The digital quantity output control device according to claim 2, characterized in that: the indicating device adopts an indicating lamp.
4. The digital quantity output control device according to claim 1, characterized in that: the digital quantity output device also comprises an upper computer, wherein the upper computer is connected with the microprocessor and is used for receiving the digital quantity output state sent by the microprocessor.
5. The digital quantity output control device according to claim 4, characterized in that: the upper computer is communicated with the microprocessor through RS 485.
6. The digital quantity output control device according to claim 1, characterized in that: the microprocessor is used for judging that the digital quantity output state of the microprocessor is normal when the voltage state of the digital quantity output signal and the voltage state of the digital quantity input signal are opposite; and when the voltage state of the digital output signal is consistent with the voltage state of the digital input signal, judging that the digital output state of the microprocessor is abnormal.
7. The digital quantity output control device according to claim 1, characterized in that: and the microprocessor sends out the digital quantity output signal based on the I/O interface.
8. The digital quantity output control device according to claim 7, characterized in that: the microprocessor comprises at least one I/O interface, and the comparison of one path of digital quantity output signals and digital quantity input signals is realized based on each I/O interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222160803.6U CN217932488U (en) | 2022-08-16 | 2022-08-16 | Digital quantity output control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222160803.6U CN217932488U (en) | 2022-08-16 | 2022-08-16 | Digital quantity output control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217932488U true CN217932488U (en) | 2022-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222160803.6U Active CN217932488U (en) | 2022-08-16 | 2022-08-16 | Digital quantity output control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217932488U (en) |
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2022
- 2022-08-16 CN CN202222160803.6U patent/CN217932488U/en active Active
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