CN214951531U

CN214951531U - Wide-range multipoint temperature and humidity data acquisition system

Info

Publication number: CN214951531U
Application number: CN202121636921.9U
Authority: CN
Inventors: 丁小平
Original assignee: Weiken Electronic Technology Shanghai Co ltd
Current assignee: Weiken Electronic Technology Shanghai Co ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2021-11-30
Anticipated expiration: 2031-07-19

Abstract

The utility model discloses a multiple spot humiture data acquisition system on a large scale, including main control board MCU, the electric connection has the lithium cell on the main control board MCU, the electric connection has status indicator lamp, user configuration button and wireless communication chip on the main control board MCU, main control board MCU is connected with temperature and humidity sensor one and temperature and humidity sensor two through the extension wire respectively. The utility model discloses, used two way extension temperature and humidity sensor, can measure the inside humiture of wall body all the way, measure wall body surface humiture all the way, the humiture information of reflection current position that the humiture of acquireing can be better.

Description

Wide-range multipoint temperature and humidity data acquisition system

Technical Field

The utility model relates to a humiture data acquisition technical field specifically is a multiple spot humiture data acquisition system on a large scale.

Background

One part of an existing temperature and humidity acquisition active (battery power supply) label is free of wireless transmission, and a user needs to look up data acquired by the label by naked eyes when the user is installed at a fixed-point position; the other part is with wireless transmission, and after the label is installed, the user case on the label is touched by the user to trigger the label to transmit wireless data and send temperature and humidity data to the terminal, so that the temperature and humidity data can be checked.

Because the distribution of humiture is and unbalanced in the same space, traditional humiture collection system can't measure accurate humiture distribution when the installation, and the humiture acquisition process is too loaded down with trivial details. The temperature and humidity data measured by the similar products are the surface temperature of the installation position.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multiple spot humiture data acquisition system on a large scale to solve the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a multiple spot humiture data acquisition system on a large scale, includes main control board MCU, the electrical connection has the lithium cell on the main control board MCU, the electrical connection has status indicator lamp, user configuration button and wireless communication chip on the main control board MCU, main control board MCU is connected with temperature and humidity sensor one and temperature and humidity sensor two through the extension wire respectively.

Preferably, the lithium battery is a 3.7V lithium battery, and the lithium battery supplies power to the system through a J1 socket.

Preferably, the VCC main line of the lithium battery is connected to the ground through three capacitors of C1, C2 and C3.

Preferably, the status indicator lamp is pulled down to the ground, and the series resistor R4 is directly connected to the general io interface of the MCU.

Compared with the prior art, the beneficial effects of the utility model are that: two paths of extension temperature and humidity sensors are used, the temperature and humidity inside the wall body can be measured all the way, the temperature and humidity on the surface of the wall body are measured all the way, and the acquired temperature and humidity can better reflect the temperature and humidity information of the current position.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic diagram of the present invention.

Fig. 2 is a circuit diagram of the present invention.

Fig. 3 is a circuit diagram of the wireless communication chip of the present invention.

Fig. 4 is a circuit diagram of the temperature and humidity sensor of the present invention.

In the figure: 1. a main control board MCU; 2. a lithium battery; 3. a status indicator light; 4. a user configures a key; 5. a temperature and humidity sensor I; 6. a temperature and humidity sensor II; 7. a wireless communication chip.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, 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 work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, in an embodiment of the present invention, a large-range multipoint temperature and humidity data acquisition system includes a main control board MCU1, the main control board MCU1 is electrically connected to a lithium battery 2, the main control board MCU1 is electrically connected to a status indicator lamp 3, a user configuration key 4 and a wireless communication chip 7, and the main control board MCU1 is connected to a first temperature and humidity sensor 5 and a second temperature and humidity sensor 6 through extension wires, respectively; the lithium battery 2 adopts a 3.7V lithium battery, and the lithium battery 2 supplies power to the system through a J1 socket; the 2VCC mainline of the lithium battery is connected to the ground through three capacitors of C1, C2 and C3; the status indicator lamp 3 is pulled down to the ground, and the serial resistor R4 is directly connected with a general io interface of the main control board MCU 1;

the user configuration key 4 is directly connected with the MCU1 of the main control board and the lithium battery VCC; the wireless communication chip in the main control board MC is connected with the main control board MCU through an spi interface, the power supply of the wireless communication chip is different from that of other modules, the power supply voltage of the wireless communication chip is controlled, and the main control board MCU supplies power to VDD-RF by controlling the conduction of a field effect transistor Q2; two paths of temperature and humidity sensors of the temperature and humidity sensor part are connected into a controller through an I2C interface, two paths of I2C circuits share a clock pin of I2C, and all pins of the I2C are pulled up to VCC through R1, R2 and R3, so that the stability of data of the I2C in communication engineering is ensured;

the wireless communication chip adopts an FSK modulation mode, and has greater advantages in anti-interference and transmission distance compared with other similar products; l1 is a choke inductance; C8-C11 are power supply decoupling capacitors used for reducing the influence of PA output on the power supply; c1 is a blocking capacitor and forms resonance with the partial inductance of L2 at the working frequency point to play a role in harmonic suppression; the L2, the C2 and the L3 form a TX matching network to realize impedance matching between the PA output and a direct connection point; the RX balun matching network is formed by the C6, the L6, the C7, the L7 and the L8, the input impedance and the direct connection point matching of the receiver are achieved, the amplitude of a received signal reaching the differential input port RFIP is equal, and the phase difference is 180 degrees; l4, C3 and L5 are T-shaped low-pass filter matching networks of 50 omega to 50 omega; y1 is a 26MHz crystal with a frequency tolerance of + -20 ppm; c4 and C5 are crystal load capacitances; the C12-C15 filter capacitors are easy to interfere with pins of serial ports CSB, FCSB, SDIO and SCLK under the condition of unreasonable wiring or too long wiring, the larger the power output (20dBm), the lower the working frequency and the higher the interference probability, and the filter capacitors can effectively remove the interference of the serial ports CSB, FCSB, SDIO and SCLK.

The utility model discloses a theory of operation is: two paths of extension temperature and humidity sensors are used, the temperature and humidity inside the wall body can be measured all the way, the temperature and humidity on the surface of the wall body are measured all the way, and the acquired temperature and humidity can better reflect the temperature and humidity information of the current position.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a multiple spot humiture data acquisition system on a large scale, includes main control board MCU (1), its characterized in that: the intelligent temperature and humidity control system is characterized in that a lithium battery (2) is electrically connected to the main control board MCU (1), a state indicator lamp (3), a user configuration key (4) and a wireless communication chip (7) are electrically connected to the main control board MCU (1), and the main control board MCU (1) is connected with a first temperature and humidity sensor (5) and a second temperature and humidity sensor (6) through extension wires respectively.

2. The wide-range multipoint temperature and humidity data acquisition system according to claim 1, characterized in that: the lithium battery (2) adopts a 3.7V lithium battery, and the lithium battery (2) supplies power to the system through a J1 socket.

3. The wide-range multipoint temperature and humidity data acquisition system according to claim 1, characterized in that: the VCC mainline of the lithium battery (2) is connected to the ground through three capacitors of C1, C2 and C3.

4. The wide-range multipoint temperature and humidity data acquisition system according to claim 1, characterized in that: and the status indicator lamp (3) is pulled down to the ground, and the serial resistor R4 is directly connected with the general io interface of the main control board MCU (1).