CN110926635A - Temperature transmitter with temperature compensation - Google Patents
Temperature transmitter with temperature compensation Download PDFInfo
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- CN110926635A CN110926635A CN201910989900.6A CN201910989900A CN110926635A CN 110926635 A CN110926635 A CN 110926635A CN 201910989900 A CN201910989900 A CN 201910989900A CN 110926635 A CN110926635 A CN 110926635A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/20—Compensating for effects of temperature changes other than those to be measured, e.g. changes in ambient temperature
Abstract
The invention relates to a temperature transmitter, in particular to a temperature transmitter with temperature compensation, which comprises a controller, wherein the controller is connected with a signal detection module for detecting a signal, the controller is connected with a signal type judgment module for judging the type of the signal detected by the signal detection module, the controller is connected with a range matching module for selecting a proper range temperature detection module according to the signal type judged by the signal type judgment module, the controller is connected with a signal input module for receiving the detection signal of the range matching module selected temperature detection module, the controller is connected with a signal processing module for processing the detection signal received by the signal input module, and the controller is connected with a signal output module for outputting the signal processed by the signal processing module; the technical scheme provided by the invention can effectively overcome the defects of narrow application range and no temperature compensation function in the prior art.
Description
Technical Field
The invention relates to a temperature transmitter, in particular to a temperature transmitter with temperature compensation.
Background
The temperature transmitter is used as a temperature signal conversion instrument, is arranged in an instrument shell at the top end of the temperature sensor, and is mainly used for receiving temperature signals collected by the temperature sensor and converting the temperature signals into standard analog signals.
The temperature transmitter is required for uploading the main transformer temperature in the transformer substation, the models of the temperature transmitters are different, and the input and measurement ranges are different. The substation tenders and purchases differently, and the thermometer producer is more, and the model differs, and measuring and control device model is more, and temperature transmitter selects the input signal scope singlely, can not satisfy the user demand. In addition, the existing temperature transmitter does not have the temperature compensation function, so that the detection result has errors.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects in the prior art, the invention provides the temperature transmitter with the temperature compensation function, which can effectively overcome the defects of narrow application range and no temperature compensation function in the prior art.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
a temperature transmitter with temperature compensation comprises a controller, wherein the controller is connected with a signal detection module for detecting signals, the controller is connected with a signal type judgment module for judging the type of the signals detected by the signal detection module, and the controller is connected with a range matching module for selecting a proper range temperature detection module according to the signal type judged by the signal type judgment module;
the controller is connected with a signal input module used for receiving a detection signal of the temperature detection module selected by the range matching module, the controller is connected with a signal processing module used for processing the detection signal received by the signal input module, and the controller is connected with a signal output module used for outputting a signal processed by the signal processing module;
the controller is connected with an ambient temperature detection module used for detecting the ambient temperature of the connection point of the temperature detection module, and the controller calculates the ambient temperature of the connection point of the temperature detection module in a compensation temperature value mode into an output signal of the signal output module and outputs the final detection temperature.
Preferably, the temperature detection module is provided with different measuring ranges, and the temperature detection module of each measuring range corresponds to the signal input module one to one.
Preferably, the signal processing module includes a filtering module for performing filtering processing on the detection signal received by the signal input module, and an AD conversion module for performing analog-to-digital conversion on the signal filtered by the filtering module and outputting the result to the signal output module.
Preferably, if the output signal of the temperature detection module is a voltage dividing resistor R1, the voltage dividing resistor R1 is connected in series with a ground resistor R2 in the AD conversion module, a fixed voltage is connected to a free end of the voltage dividing resistor R1, and a midpoint voltage between the voltage dividing resistor R1 and the ground resistor R2 is used as a signal processed by the signal processing module.
Preferably, the AD conversion module is connected to a preprocessing circuit module for obtaining a wider voltage range and stronger current driving capability, the AD conversion module is connected to a protection circuit module for preventing an excessive voltage and an excessive current in the loop, and the AD conversion module is connected to an optical coupling isolation circuit module for isolating the signal output by the signal output module to reduce interference.
Preferably, the range matching module switches the range temperature detection module through a relay group.
(III) advantageous effects
Compared with the prior art, the temperature transmitter with temperature compensation provided by the invention has the following beneficial effects:
1. the signal type judging module judges the type of the signal detected by the signal detecting module, the range matching module selects a proper range temperature detecting module according to the signal type judged by the signal type judging module, the temperature detecting module of each range corresponds to the signal input module one by one, the signal input module receives the detection signal of the temperature detecting module selected by the range matching module, the signal processing module processes the detection signal received by the signal input module, and the signal output module outputs the signal processed by the signal processing module, so that the temperature transmitter can be accessed to the signals to be detected in different measuring ranges, and the application range is effectively expanded;
2. the environment temperature detection module detects the environment temperature of the connection point of the temperature detection module, the controller calculates the environment temperature of the connection point of the temperature detection module in the form of a compensation temperature value to the output signal of the signal output module, and outputs the final detection temperature, the final output result effectively avoids the influence of the environment temperature, and the temperature compensation function is realized, so that the detection result is more accurate.
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 invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic diagram of the system of the present invention;
fig. 2 is a schematic diagram of a signal processing module in fig. 1 according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. 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.
A temperature transmitter with temperature compensation is disclosed, as shown in fig. 1 and fig. 2, and comprises a controller, wherein the controller is connected with a signal detection module for detecting a signal, the controller is connected with a signal type judgment module for judging the type of the signal detected by the signal detection module, and the controller is connected with a range matching module for selecting a proper range temperature detection module according to the signal type judged by the signal type judgment module;
the controller is connected with a signal input module used for receiving a detection signal of the temperature detection module selected by the range matching module, the controller is connected with a signal processing module used for processing the detection signal received by the signal input module, and the controller is connected with a signal output module used for outputting a signal processed by the signal processing module;
the controller is connected with an ambient temperature detection module used for detecting the ambient temperature of the connection point of the temperature detection module, and the controller calculates the ambient temperature of the connection point of the temperature detection module into an output signal of the signal output module in a compensation temperature value mode and outputs the final detection temperature.
The temperature detection module is provided with different ranges, and the temperature detection module of each range corresponds to the signal input module one by one.
The signal processing module comprises a filtering module used for filtering the detection signal received by the signal input module and an AD conversion module used for carrying out analog-to-digital conversion on the signal filtered by the filtering module and outputting the result to the signal output module.
If the output signal of the temperature detection module is the voltage dividing resistor R1, the voltage dividing resistor R1 is connected in series with the ground resistor R2 in the AD conversion module, the free end of the voltage dividing resistor R1 is connected with a fixed voltage, and the intermediate point voltage of the voltage dividing resistor R1 and the ground resistor R2 is used as the signal processed by the signal processing module.
The AD conversion module is connected with a preprocessing circuit module used for obtaining a wider voltage range and stronger current driving capability, the AD conversion module is connected with a protection circuit module used for preventing overhigh voltage and overlarge current in a loop, and the AD conversion module is connected with an optical coupling isolation circuit module used for isolating signals output by the opposite signal output module and reducing interference.
The range matching module switches the range temperature detection module through the relay group.
The signal type judging module judges the type of the signal detected by the signal detecting module, the range matching module selects a proper range temperature detecting module according to the signal type judged by the signal type judging module, the temperature detecting module of each range is in one-to-one correspondence with the signal input module, the signal input module receives the detection signal of the temperature detecting module selected by the range matching module, the signal processing module processes the detection signal received by the signal input module, and the signal output module outputs the signal processed by the signal processing module, so that the temperature transmitter can be accessed into the signals to be detected in different measuring ranges, and the application range is effectively expanded.
The signal processing module comprises a filtering module used for filtering the detection signal received by the signal input module and an AD conversion module used for carrying out analog-to-digital conversion on the signal filtered by the filtering module and outputting the result to the signal output module.
If the output signal of the temperature detection module is the voltage dividing resistor R1, the voltage dividing resistor R1 is connected in series with the ground resistor R2 in the AD conversion module, the free end of the voltage dividing resistor R1 is connected with a fixed voltage, and the intermediate point voltage of the voltage dividing resistor R1 and the ground resistor R2 is used as the signal processed by the signal processing module.
The AD conversion module is connected with a preprocessing circuit module used for obtaining a wider voltage range and stronger current driving capability, the AD conversion module is connected with a protection circuit module used for preventing overhigh voltage and overlarge current in a loop, and the AD conversion module is connected with an optical coupling isolation circuit module used for isolating signals output by the opposite signal output module and reducing interference.
The range matching module switches the range temperature detection module through the relay group.
The environment temperature detection module detects the environment temperature of the connection point of the temperature detection module, the controller calculates the environment temperature of the connection point of the temperature detection module in the form of a compensation temperature value to the output signal of the signal output module, and outputs the final detection temperature, the final output result effectively avoids the influence of the environment temperature, and the temperature compensation function is realized, so that the detection result is more accurate.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (6)
1. A temperature transmitter with temperature compensation, comprising: the device comprises a controller, wherein the controller is connected with a signal detection module for detecting signals, the controller is connected with a signal type judgment module for judging the type of the signals detected by the signal detection module, and the controller is connected with a range matching module for selecting a proper range temperature detection module according to the signal type judged by the signal type judgment module;
the controller is connected with a signal input module used for receiving a detection signal of the temperature detection module selected by the range matching module, the controller is connected with a signal processing module used for processing the detection signal received by the signal input module, and the controller is connected with a signal output module used for outputting a signal processed by the signal processing module;
the controller is connected with an ambient temperature detection module used for detecting the ambient temperature of the connection point of the temperature detection module, and the controller calculates the ambient temperature of the connection point of the temperature detection module in a compensation temperature value mode into an output signal of the signal output module and outputs the final detection temperature.
2. The temperature transmitter with temperature compensation of claim 1, wherein: the temperature detection module is provided with different measuring ranges, and the temperature detection module of each measuring range corresponds to the signal input module one by one.
3. The temperature transmitter with temperature compensation of claim 1, wherein: the signal processing module comprises a filtering module used for filtering the detection signal received by the signal input module and an AD conversion module used for carrying out analog-to-digital conversion on the signal filtered by the filtering module and outputting the result to the signal output module.
4. The temperature transmitter with temperature compensation of claim 3, wherein: if the output signal of the temperature detection module is a voltage division resistor R1, the voltage division resistor R1 is connected in series with a ground resistor R2 in the AD conversion module, a fixed voltage is connected to the free end of the voltage division resistor R1, and the voltage of the middle point of the voltage division resistor R1 and the ground resistor R2 is used as the signal processed by the signal processing module.
5. The temperature transmitter with temperature compensation of claim 3, wherein: the AD conversion module is connected with a preprocessing circuit module used for obtaining a wider voltage range and stronger current driving capability, the AD conversion module is connected with a protection circuit module used for preventing overhigh voltage and overlarge current in a loop, and the AD conversion module is connected with an optical coupling isolation circuit module used for isolating signals output by the signal output module and reducing interference.
6. The temperature transmitter with temperature compensation of claim 1, wherein: the range matching module switches the range temperature detection module through a relay group.
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| CN201910989900.6A CN110926635A (en) | 2019-10-17 | 2019-10-17 | Temperature transmitter with temperature compensation |
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| CN201910989900.6A CN110926635A (en) | 2019-10-17 | 2019-10-17 | Temperature transmitter with temperature compensation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112217495A (en) * | 2020-10-13 | 2021-01-12 | 合肥泽延微电子有限公司 | Integrated circuit drive control system |
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| CN101119115A (en) * | 2006-08-03 | 2008-02-06 | 深圳达实智能股份有限公司 | Multi-channel A/D conversion device and method |
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Application publication date: 20200327 |