CN216349196U - Temperature measuring device of switch tube - Google Patents
Temperature measuring device of switch tube Download PDFInfo
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- CN216349196U CN216349196U CN202121447093.4U CN202121447093U CN216349196U CN 216349196 U CN216349196 U CN 216349196U CN 202121447093 U CN202121447093 U CN 202121447093U CN 216349196 U CN216349196 U CN 216349196U
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Abstract
The application discloses temperature measuring device of switch tube includes: each digital temperature sensor is used for detecting the temperature of each switching tube; the DSP processor is connected with each digital temperature sensor through a communication bus and used for acquiring temperature values detected by each digital temperature sensor and outputting the temperature values to the information output device; and the information output device is connected with the DSP processor and is used for outputting each temperature value. By applying the scheme, the cost is lower, the occupied space is smaller, the anti-interference performance is stronger, and the data processing time consumption is short, so that the reflecting speed of the system is improved.
Description
Technical Field
The utility model relates to the technical field of temperature detection, in particular to a temperature measuring device of a switch tube.
Background
The temperature of the switch tube in the rectifier cabinet can reflect the working state of the switch tube, for example, if the temperature of a certain switch tube is too high, the switch tube may have an overcurrent condition, and there is a risk of burning. If the temperature of a certain switch tube is too low relative to the temperatures of other switch tubes in the same rectifier cabinet, the switch tube may not be conducted, and other thyristors may be in danger of being burnt out due to overcurrent. Therefore, the temperature of the switching tube needs to be detected.
The conventional temperature measurement system generally adopts thermocouple resistors to realize temperature measurement, and has high cost and large occupied space. And what adopted usually is that the singlechip carries out each temperature in proper order and detects the processing of data, because the data processing of singlechip is consuming time longer, consequently, when the quantity of the switch tube that carries out temperature detection in the rectifier cabinet is more, the singlechip just needs longer time just can accomplish each temperature and detects the processing of data for the temperature measurement result of each switch tube is very slow more, just is unfavorable for improving the reflection speed of system yet. In addition, at present, an analog quantity signal is generally adopted to transmit data to the single chip microcomputer, and the anti-interference capability is poor.
In summary, how to effectively measure the temperature of the switching tube, reduce the time consumption of data processing, improve the anti-interference capability, and reduce the cost is a technical problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a temperature measuring device of a switch tube, which is used for effectively measuring the temperature of the switch tube, reducing the time consumption of data processing, improving the anti-interference capability and reducing the cost.
In order to solve the technical problems, the utility model provides the following technical scheme:
a temperature measuring device of a switch tube comprises:
each digital temperature sensor is used for detecting the temperature of each switching tube;
the DSP processor is connected with each digital temperature sensor through a communication bus and used for acquiring temperature values detected by each digital temperature sensor and outputting the temperature values to the information output device;
and the information output device is connected with the DSP processor and is used for outputting each temperature value.
Preferably, the method further comprises the following steps:
and the optical coupling isolation circuit is arranged at the input end of the communication bus of the DSP processor and is used for signal isolation.
Preferably, the information output device includes:
the transceiver is connected with the DSP processor and is used for converting output data of the DSP processor from TTL level to RS485 level;
and the display is connected with the transceiver and used for displaying each temperature value.
Preferably, the display is a touch screen for displaying the temperature values detected by the digital temperature sensors at corresponding positions respectively.
Preferably, a digital filter circuit for filtering the acquired temperature value detected by each digital temperature sensor is further disposed in the DSP processor.
Preferably, each digital temperature sensor is a DS18B20 digital temperature sensor.
Preferably, the method further comprises the following steps:
and the storage device is connected with the DSP processor and is used for storing the temperature values detected by the digital temperature sensors.
Preferably, the method further comprises the following steps:
and the wireless transmission device is connected with the DSP processor and is used for transmitting the temperature value detected by each digital temperature sensor to a remote terminal.
Preferably, each switch tube is a thyristor in a variable current system.
Preferably, the method further comprises the following steps:
and the alarm device is connected with the DSP processor and is used for giving an alarm when the temperature value detected by any 1 digital temperature sensor exceeds a temperature threshold value.
By applying the technical scheme provided by the embodiment of the utility model, the temperature of each switching tube is detected by using each digital temperature sensor, compared with the traditional method for realizing temperature measurement by adopting a thermocouple resistor, the method has the advantages of lower cost, simple circuit and smaller occupied space by adopting the digital temperature sensor. Each digital temperature sensor is connected with each digital temperature sensor through communication bus, compares in traditional analog quantity transmission mode, and interference immunity is stronger. The DSP processor of this application is connected with each digital temperature sensor through communication bus, can acquire the temperature value that each digital temperature sensor detected and export to information output device, and DSP processor 20 is short consuming time than the data processing of singlechip to be favorable to improving the reflection speed of system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a temperature measuring device of a switching tube according to the present invention;
FIG. 2 is another schematic structural diagram of the temperature measuring device of the switching tube of the present invention.
Detailed Description
The core of the utility model is to provide the temperature measuring device of the switch tube, which has the advantages of lower cost, smaller occupied space, stronger anti-interference performance, short data processing time and contribution to improving the reflecting speed of a system.
In order that those skilled in the art will better understand the disclosure, the utility model will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a temperature measuring device of a switch tube according to the present invention, the temperature measuring device of the switch tube may include:
each digital temperature sensor 10 for detecting the temperature of each switching tube;
a DSP (Digital Signal Processing) processor 20 connected to each Digital temperature sensor 10 through a communication bus, for acquiring a temperature value detected by each Digital temperature sensor 10 and outputting the temperature value to the information output device 30;
and an information output device 30 connected to the DSP processor 20 for outputting the respective temperature values.
Specifically, the number of the digital temperature sensors 10 may be set and adjusted according to actual needs, and may be 1, or may be multiple, each digital temperature sensor 10 is configured to detect a temperature value of a corresponding 1 switching tube, and fig. 1 shows 3 digital temperature sensors 10. Of course, in practical applications, the number of the switching tubes required to perform temperature detection is usually multiple, for example, there are usually more than 48 switching tubes in a common rectifier cabinet.
In addition, in an embodiment of the present invention, each switching tube may be a thyristor in a variable current system. The converter system can be a rectifier system, an inverter system and the like. Of course, in other embodiments, besides the thyristor, other types of switching tubes may be used without affecting the implementation of the present invention.
The specific type of each digital temperature sensor 10 can also be set and selected according to actual needs, and in a specific embodiment of the present invention, considering that the DS18B20 digital temperature sensor has the advantages of small volume, convenient wiring, low hardware overhead, strong anti-interference capability, high precision, convenient use, various packaging forms, etc., each digital temperature sensor 10 can be selected as the DS18B20 digital temperature sensor 10.
The DSP processor 20 is connected to each digital temperature sensor 10 through a communication bus, and can acquire the temperature value detected by each digital temperature sensor 10 and output the temperature value to the information output device 30.
The particular type of DSP processor 20 may be configured as desired, such as a 32-bit floating point DSP28335 processor in one implementation.
For any digital temperature sensor 10, the digital temperature sensor 10 can transmit the detected temperature value according to the protocol of the communication bus, and the DSP processor 20 can extract the temperature value detected by the digital temperature sensor 10. The specific protocol type of the communication bus may be set according to actual conditions, for example, the type of the DSP processor 20 and the type of each digital temperature sensor 10.
In practical application, generally, the temperature values detected by the digital temperature sensors 10 can be sequentially sent to the DSP processor 20 according to the serial numbers of the digital temperature sensors 10, and after the digital temperature sensors 10 are sent, the cycle is performed again to update the temperature values at the calibration positions.
For example, when each digital temperature sensor 10 is a DS18B20 digital temperature sensor 10, each DS18B20 digital temperature sensor 10 has its own code, and the DSP processor 20 can perform a cyclic reading of each temperature value according to the code sequence.
The information output device 30 is connected to the DSP processor 20 and can output each temperature value. The information output device 30 may be generally realized by a display device, but may output information in the form of voice or the like in some cases, and may be set as necessary.
In an embodiment of the present invention, referring to fig. 2, further comprising:
and the optical coupling isolation circuit is arranged at the input end of the communication bus of the DSP processor 20 and is used for signal isolation.
In this kind of embodiment, because set up opto-coupler isolation circuit 40 at the input of DSP treater 20's communication bus for through opto-coupler isolation, can eliminate the interference on the circuit to a certain extent, just also be favorable to improving the temperature measurement accuracy of this application scheme.
In addition, in this embodiment, it is not necessary to separately configure a corresponding optical coupler/isolator circuit for each digital temperature sensor 10, but the optical coupler/isolator circuit may be set at an input end of a communication bus of the DSP processor 20, that is, each digital temperature sensor 10 may share the optical coupler/isolator circuit 40.
In one embodiment of the present invention, the information output device 30 may include:
a transceiver connected to the DSP processor 20 for converting output data of the DSP processor 20 from TTL level to RS485 level;
and the display is connected with the transceiver and used for displaying each temperature value.
As described above, the information output device 30 can be generally implemented by a display device, and in this embodiment, considering that the display device generally needs to receive serial signals, and the DSP processor 20 generally outputs TTL (Transistor Logic) level signals, a transceiver connected to the DSP processor 20 and the display is provided, so that the output data of the DSP processor 20 can be converted from TTL level to RS485 level.
The specific type of the transceiver can be set according to needs, for example, a MAX485 chip can be selected as the transceiver, and the Modbus Rtu protocol is adopted to communicate with the display.
In an embodiment of the present invention, the display is a touch screen for displaying the temperature values detected by the digital temperature sensors 10 at corresponding positions.
In this embodiment, considering that each digital temperature sensor 10 of the present application generally uses a DS18B20 digital temperature sensor, and as described above, each DS18B20 digital temperature sensor has its own code, the DSP processor 20 may perform cyclic reading of each temperature value according to the code sequence, so as to perform non-directional display in the upper system according to the sequence, that is, it is not convenient to correspond the currently displayed temperature value with the temperature acquisition point.
In this kind of embodiment, in order to make the staff can learn the one-to-one correspondence of each temperature value and each temperature acquisition point directly perceivedly, conveniently, namely learn the one-to-one correspondence of each temperature value and each switch tube, utilize the touch-sensitive screen to show the temperature value that each digital temperature sensor 10 detected respectively in corresponding position, that is to say, the temperature value that different digital temperature sensors 10 detected can show different positions in the touch-sensitive screen, thereby the staff of being convenient for distinguishes, is favorable to assisting staff's work.
In addition, the design of the touch screen is selected in the implementation mode, and compared with displays in other control modes, the operation of workers can be facilitated.
In an embodiment of the present invention, a digital filter circuit for filtering the acquired temperature value detected by each digital temperature sensor 10 is further disposed in the DSP processor 20.
Because the DSP 20 is also provided with a digital filter circuit, the influence of interference can be further reduced, and the temperature measurement accuracy of the scheme of the application is improved. Of course, the specific circuit configuration of the digital filter circuit can be set and adjusted according to actual needs.
In an embodiment of the present invention, the method may further include:
and a storage device 50 connected to the DSP processor 20 for storing the temperature values detected by the respective digital temperature sensors 10.
Through storage device 50, can store the temperature value that each digital temperature sensor 10 detected, be favorable to carrying out subsequent analysis, the staff can carry out the analysis according to historical data promptly. Of course, in some cases, in order to avoid storing excessive data, a storage trigger period may be set, that is, the temperature value detected by each digital temperature sensor 10 is stored once every storage period.
In an embodiment of the present invention, the method may further include:
and a wireless transmission device 60 connected with the DSP processor 20 for transmitting the temperature values detected by the respective digital temperature sensors 10 to a remote terminal.
Through wireless transmission device 60, can transmit the temperature value that each digital temperature sensor 10 detected to remote terminal for the staff who is not on the scene also can in time look over the temperature value that each digital temperature sensor 10 detected at remote terminal, the staff's of being convenient for work.
In an embodiment of the present invention, the method may further include:
and the alarm device 70 is connected with the DSP processor 20 and is used for giving an alarm when the temperature value detected by any 1 digital temperature sensor 10 exceeds the temperature threshold value.
The specific value of the temperature threshold can be set and adjusted as required, and when the temperature value detected by any 1 of the digital temperature sensors 10 exceeds the temperature threshold, it is indicated that the switch tube corresponding to the temperature value is abnormal, so that the alarm device 70 gives an alarm, and a worker can find the abnormal condition in time. The alarm device 70 may be, for example, an indicator light, buzzer-based alarm device 70. In other specific cases, besides the alarm when the temperature threshold is exceeded, other trigger conditions may be set, and the trigger conditions may be set according to actual needs. For example, the temperature can be compared transversely, and when the temperature value of a certain switch tube is much lower than the temperature values of other switch tubes, an alarm can be triggered.
By applying the technical scheme provided by the embodiment of the utility model, the temperature of each switching tube is detected by using each digital temperature sensor 10, compared with the traditional method for realizing temperature measurement by adopting a thermocouple resistor, the method for detecting the temperature of the switching tube by using the digital temperature sensors 10 has the advantages of lower cost, simple circuit and smaller occupied space. Each digital temperature sensor 10 is connected with each digital temperature sensor 10 through a communication bus, and compared with a traditional analog quantity transmission mode, the anti-interference performance is stronger. The DSP processor 20 of the application is connected with each digital temperature sensor 10 through a communication bus, can acquire the temperature value detected by each digital temperature sensor 10 and output the temperature value to the information output device 30, and the DSP processor 20 consumes less time than the data processing of a single chip microcomputer, thereby being beneficial to improving the reflecting speed of the system.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, article, or apparatus that comprises the element.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The principle and the implementation of the present invention are explained in the present application by using specific examples, and the above description of the embodiments is only used to help understanding the technical solution and the core idea of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a temperature measuring device of switch tube which characterized in that includes:
each digital temperature sensor is used for detecting the temperature of each switching tube;
the DSP processor is connected with each digital temperature sensor through a communication bus and used for acquiring temperature values detected by each digital temperature sensor and outputting the temperature values to the information output device;
the information output device is connected with the DSP processor and is used for outputting each temperature value;
further comprising:
the optical coupling isolation circuit is arranged at the input end of a communication bus of the DSP processor and is used for signal isolation;
and the DSP processor is also provided with a digital filter circuit for filtering the acquired temperature values detected by the digital temperature sensors.
2. The apparatus of claim 1, wherein the information output means comprises:
the transceiver is connected with the DSP processor and is used for converting output data of the DSP processor from TTL level to RS485 level;
and the display is connected with the transceiver and used for displaying each temperature value.
3. The device for measuring the temperature of a switching tube according to claim 2, wherein the display is a touch screen for displaying the temperature values detected by the digital temperature sensors at corresponding positions, respectively.
4. The apparatus of claim 1, wherein each of the digital temperature sensors is a DS18B20 digital temperature sensor.
5. The apparatus of claim 1, further comprising:
and the storage device is connected with the DSP processor and is used for storing the temperature values detected by the digital temperature sensors.
6. The apparatus of claim 1, further comprising:
and the wireless transmission device is connected with the DSP processor and is used for transmitting the temperature value detected by each digital temperature sensor to a remote terminal.
7. The device for measuring the temperature of the switching tube according to claim 1, wherein each switching tube is a thyristor in a variable current system.
8. The apparatus according to any one of claims 1 to 7, further comprising:
and the alarm device is connected with the DSP processor and is used for giving an alarm when the temperature value detected by any 1 digital temperature sensor exceeds a temperature threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121447093.4U CN216349196U (en) | 2021-06-28 | 2021-06-28 | Temperature measuring device of switch tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121447093.4U CN216349196U (en) | 2021-06-28 | 2021-06-28 | Temperature measuring device of switch tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216349196U true CN216349196U (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121447093.4U Active CN216349196U (en) | 2021-06-28 | 2021-06-28 | Temperature measuring device of switch tube |
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|---|---|
| CN (1) | CN216349196U (en) |
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- 2021-06-28 CN CN202121447093.4U patent/CN216349196U/en active Active
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