CN217953554U - High-precision industrial temperature and humidity transmitter - Google Patents
High-precision industrial temperature and humidity transmitter Download PDFInfo
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- CN217953554U CN217953554U CN202222164334.5U CN202222164334U CN217953554U CN 217953554 U CN217953554 U CN 217953554U CN 202222164334 U CN202222164334 U CN 202222164334U CN 217953554 U CN217953554 U CN 217953554U
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Abstract
The utility model relates to a measure technical field, specifically be a high accuracy industrial grade temperature and humidity transmitter. The high-precision industrial temperature and humidity transmitter of the utility model passes through the DA conversion module and the debugging compensation module; the DA conversion module is used for acquiring humiture digital quantity data and converting the humiture digital quantity data into corresponding analog quantity data; the debugging compensation module is electrically connected with the DA conversion module to debug and compensate the DA conversion module, so that the rapid debugging compensation before the transmitter is used is realized, and the detection precision of the temperature and humidity transmitter is improved.
Description
Technical Field
The utility model relates to a measure technical field, specifically be a high accuracy industrial grade temperature and humidity transmitter.
Background
The temperature and humidity transmitter mostly uses a temperature and humidity integrated probe as a temperature measuring element, collects temperature and humidity signals, and converts the temperature and humidity signals into current signals or voltage signals which are in a linear relation with the temperature and humidity after the temperature and humidity signals are processed by circuits such as voltage stabilizing filtering, operational amplification, nonlinear correction, V/I conversion, constant current and reverse protection and the like;
because the temperature and humidity transmitter uses different scenes, and the sensing precision and the transmission processing precision of the temperature and humidity sensor are limited, the actual use precision of the temperature and humidity transmitter is restricted, meanwhile, the existing temperature and humidity transmitter needs to be debugged and calibrated before use, and the traditional debugging mode adopts a standard platinum resistance thermometer and a precise dew point instrument to carry out physical measurement, which is very inconvenient.
Therefore, it is desirable to provide a high-precision industrial temperature and humidity transmitter capable of performing an automatic debugging compensation function before use.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high accuracy industrial grade temperature and humidity transmitter to the humiture data that acquires the changer debugs the compensation, has solved the inconvenient technical problem of traditional debugging mode.
The utility model provides a high accuracy industrial grade temperature and humidity transmitter, include:
the device comprises a DA conversion module and a debugging compensation module; the DA conversion module is used for acquiring humiture digital quantity data and converting the humiture digital quantity data into corresponding analog quantity data; the debugging compensation module is electrically connected with the DA conversion module to debug and compensate the DA conversion module.
Further, the DA conversion module is provided with an SCL data interface and an SDA data interface; and the SCL data interface and the SDA data interface are respectively connected with corresponding interfaces on a debugging chip in the debugging compensation module.
Furthermore, the SCL data interface and the SDA data interface are adapted to be connected to corresponding interfaces provided on a temperature and humidity sensor, so as to obtain the temperature and humidity digital quantity data.
Furthermore, the debugging compensation module is provided with a communication serial port for debugging with an upper computer.
Further, the debug compensation module includes: a power supply circuit; the power supply circuit is suitable for carrying out voltage reduction processing on an external power supply; and the power supply circuit is suitable for using the low voltage subjected to voltage reduction as a power supply of the debugging compensation module.
Furthermore, an SCL data interface and an SDA data interface on a processing chip in the debugging compensation module are respectively connected with a pull-up resistor.
The utility model has the advantages that the high-precision industrial temperature and humidity transmitter of the utility model passes through the DA conversion module and the debugging compensation module; the DA conversion module is used for acquiring temperature and humidity digital quantity data and converting the temperature and humidity digital quantity data into corresponding analog quantity data; the debugging compensation module is electrically connected with the DA conversion module to debug and compensate the DA conversion module, so that the rapid debugging compensation before the transmitter is used is realized, and the detection precision of the temperature and humidity transmitter is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
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 embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are 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 block diagram of a high-precision industrial-grade temperature and humidity transmitter according to the present invention;
fig. 2 is a control circuit diagram of the DA conversion module according to the present invention;
fig. 3 is a control circuit diagram of a debugging compensation module according to the present invention;
fig. 4 is a circuit diagram of a power supply circuit according to the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Fig. 1 is a schematic block diagram of a high-precision industrial-grade temperature and humidity transmitter according to the present invention.
As shown in fig. 1, the present embodiment provides a high-precision industrial temperature and humidity transmitter, including: the device comprises a DA conversion module and a debugging compensation module; the DA conversion module is used for acquiring temperature and humidity digital quantity data and converting the temperature and humidity digital quantity data into corresponding analog quantity data; the debugging compensation module is electrically connected with the DA conversion module to debug and compensate the DA conversion module.
In this embodiment, the DA conversion module includes, but is not limited to, a dual-channel DAC chip of a model GP8403, and the debugging compensation module includes, but is not limited to, an STM-32 single chip microcomputer; specifically, data debugging compensation is carried out on the DA conversion module of the temperature and humidity transmitter before the temperature and humidity transmitter is used through the arranged debugging compensation module, so that rapid debugging compensation before the transmitter is used is realized, and the detection precision of the temperature and humidity transmitter is improved.
Fig. 2 is a control circuit diagram of the DA conversion module according to the present invention;
fig. 3 is a control circuit diagram of a debugging compensation module according to the present invention;
as shown in fig. 2 and fig. 3, in the present embodiment, the DA conversion module is provided with an SCL data interface and an SDA data interface; and the SCL data interface and the SDA data interface are respectively connected with corresponding interfaces on a debugging chip in the debugging compensation module.
When the high-precision industrial temperature and humidity transmitter is debugged, the SCL data interface and the SDA data interface on the DA conversion module are respectively connected with corresponding interfaces on a debugging chip in the debugging compensation module so as to acquire a debugging program uploaded by the debugging compensation module. (the debugger is prior art).
When the high-precision industrial-grade temperature and humidity transmitter is used, an SCL data interface and an SDA data interface on the DA conversion module are respectively connected with corresponding I2C data serial ports on a temperature and humidity sensor so as to obtain temperature and humidity digital quantity data and convert the temperature and humidity digital quantity data into corresponding analog quantity data.
As shown in fig. 3, in this embodiment, the debugging compensation module is provided with communication serial ports RX and TX for debugging with an upper computer.
In this embodiment, the SCL data interface and the SDA data interface on the processing chip in the debugging compensation module are connected with pull-up resistors R2 and R3, respectively.
Fig. 4 is a circuit diagram of a power supply circuit according to the present invention.
As shown in fig. 4, in the present embodiment, the power supply circuit is adapted to perform a voltage reduction process on an external power supply; the power supply circuit is suitable for using the low-voltage after voltage reduction as a power supply of the debugging compensation module.
In this embodiment, the external power source includes, but is not limited to, a temperature and humidity sensor power source.
To sum up, the high-precision industrial temperature and humidity transmitter of the utility model passes through the DA conversion module and the debugging compensation module; the DA conversion module is used for acquiring temperature and humidity digital quantity data and converting the temperature and humidity digital quantity data into corresponding analog quantity data; the debugging compensation module is electrically connected with the DA conversion module to debug and compensate the DA conversion module, so that the rapid debugging and compensation before the transmitter is used are realized, and the detection precision of the temperature and humidity transmitter is improved.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist alone, or two or more modules may be integrated to form an independent part.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the description, and must be determined according to the scope of the claims.
Claims (6)
1. The utility model provides a high accuracy industrial grade temperature and humidity transmitter which characterized in that includes:
the device comprises a DA conversion module and a debugging compensation module;
the DA conversion module is used for acquiring temperature and humidity digital quantity data and converting the temperature and humidity digital quantity data into corresponding analog quantity data;
the debugging compensation module is electrically connected with the DA conversion module to debug and compensate the DA conversion module.
2. The high accuracy industrial temperature and humidity transmitter of claim 1,
the DA conversion module is provided with an SCL data interface and an SDA data interface; and
the SCL data interface and the SDA data interface are respectively connected with corresponding interfaces on a debugging chip in the debugging compensation module.
3. The high accuracy industrial temperature and humidity transmitter of claim 2,
the SCL data interface and the SDA data interface are suitable for being connected with corresponding interfaces arranged on a temperature and humidity sensor so as to acquire the temperature and humidity digital quantity data.
4. The high accuracy industrial temperature and humidity transmitter of claim 3,
the debugging compensation module is provided with a communication serial port for debugging the upper computer.
5. The high accuracy industrial temperature and humidity transmitter of claim 1,
the debug compensation module includes:
a power supply circuit;
the power supply circuit is suitable for carrying out voltage reduction processing on an external power supply; and
the power supply circuit is suitable for using the low-voltage after voltage reduction as a power supply of the debugging compensation module.
6. The high accuracy industrial temperature and humidity transmitter of claim 5,
and an SCL data interface and an SDA data interface on a processing chip in the debugging compensation module are respectively connected with a pull-up resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222164334.5U CN217953554U (en) | 2022-08-17 | 2022-08-17 | High-precision industrial temperature and humidity transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222164334.5U CN217953554U (en) | 2022-08-17 | 2022-08-17 | High-precision industrial temperature and humidity transmitter |
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| Publication Number | Publication Date |
|---|---|
| CN217953554U true CN217953554U (en) | 2022-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222164334.5U Active CN217953554U (en) | 2022-08-17 | 2022-08-17 | High-precision industrial temperature and humidity transmitter |
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| Country | Link |
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| CN (1) | CN217953554U (en) |
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2022
- 2022-08-17 CN CN202222164334.5U patent/CN217953554U/en active Active
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