CN201269763Y - Environment measurement instrument for tobacco curing barn - Google Patents

Abstract

The utility model belongs to a measuring instrument, in particular to an environment measuring instrument for a tobacco barn. The measuring instrument is pasted with a surface film on the upper surface of the instrument box and is fixed with a liquid crystal module, buttons and speakers. Adapter interface, USB interface, audio interface, the circuit board is fixed with screws in the instrument box, and a single-chip microcomputer is welded on the circuit board. Electric circuit, storage module, clock module, button battery, power management module, communication module, voice module, speaker interface, button interface, lithium battery and interface, JTAG port, LCD interface. The utility model can measure the temperature, humidity and dew point temperature information of the environment with high precision, and has the functions of real-time upper and lower limit alarm, large-capacity data storage, data query, flipping and checking, etc., and can also broadcast the current collection in real time. temperature and humidity dew point information.

Description

Tobacco Barn Environmental Measuring Instrument

Technical field:

The utility model belongs to the field of measuring instruments. The tobacco curing room environment measuring instrument is essentially a special detector for temperature and humidity dew point measurement in the tobacco curing room. Recording, and has the functions of voice loop broadcast prompt, upper and lower limit alarm, data display and management analysis.

Background technique:

In the process of tobacco production, strict temperature and humidity environment control is an important factor in the tobacco production process, so accurate measurement of temperature and humidity in the curing room is very critical, especially for tobacco production process researchers, there is a measurement It is necessary to have a measuring instrument with high precision, automatic recording, upper and lower limit alarm, and voice broadcasting functions. At present, there are many instruments on the market for measuring environmental parameters such as temperature and humidity, but they all have more or less problems in measurement accuracy, function, design, etc. Production needs. Therefore, it is necessary to develop a special temperature and humidity dew point monitoring instrument for tobacco curing barns.

Utility model content:

1. The purpose of the utility model

The purpose of the utility model is to provide an instrument specially used for measuring the temperature and humidity dew point of the environment in the tobacco barn. It can measure the temperature, humidity, and dew point temperature information of the environment with high precision, and has functions such as real-time upper and lower limit alarms, large-capacity data storage, data query, and browsing and viewing. temperature and humidity dew point information. The utility model can communicate with a computer, is embedded with the ModBus protocol conforming to the industrial standard, and is equipped with a computer auxiliary analysis software with relatively complete functions, and has outstanding data management ability.

2. The technical solution adopted by the utility model to solve its technical problems:

In order to achieve the above object, the technical solution of the present utility model is to use a tobacco curing room environment measuring instrument, a surface film is pasted on the upper surface of the instrument box and a liquid crystal module, buttons, and speakers are fixed, and a charging adapter is arranged on the side of the instrument box Interface, USB interface, audio interface, a circuit board is fixed with screws in the instrument box, a single-chip microcomputer is welded on the circuit board, and the single-chip microcomputer is integrated with the temperature and humidity dew point welded on the circuit board through the circuit board Type sensor, watchdog reset circuit, memory module, clock module, button battery, power management module, communication module, voice module, speaker interface, button interface, lithium battery and interface, JTAG port, LCD interface electrical connection.

The single-chip microcomputer is a microprocessor, and software for data acquisition and processing is installed inside the microprocessor; the peripheral circuit of the microprocessor is composed of a read-write data storage module, a clock core module and a separate power supply for the clock chip. Button battery, voice module and speaker, low-dropout regulator chip with 3.3V output voltage, power consumption management chip, and charging management module; the integrated temperature and humidity dew point sensor is composed of an integrated temperature and humidity dew point sensor and an interface circuit , can be used to measure the temperature, humidity and dew point of the barn.

Three, the beneficial effect of the utility model:

1. Temperature and humidity dew point integrated sensor, one-point measurement, temperature measurement accuracy 0.1 ℃, humidity measurement accuracy 2%, dew point measurement accuracy 1 ℃;

2. Large storage capacity, can store 40960 data records at a time;

3. The sampling interval and storage interval can be freely set by the user within the range of 1 second to 24 hours;

4. Full Chinese LCD interface, with data query and browsing functions;

5. It has the functions of voice loop broadcast and voice upper and lower limit automatic alarm;

6. Low power consumption, powered by lithium battery;

7. Small size, easy to carry, low power consumption design, free switching between lithium battery and power supply;

8. Provide a USB interface, and use the industrial standard ModBus protocol for communication with the computer. The protocol is transparent and can be used on the Internet;

9. Possess complete computer analysis software and provide intelligent data management services.

Description of drawings:

Fig. 1 is a schematic diagram of the external front view of the physical structure of the present utility model;

Fig. 2 is the schematic diagram of the internal front view of the physical structure of the present utility model;

Fig. 3 is a schematic diagram of the left side view of the physical structure of the present utility model;

Fig. 4 is a schematic diagram of the right side view of the physical structure of the present utility model;

Fig. 5 is a schematic diagram of the system composition of the present invention.

Detailed ways:

The system uses Silicon Laboratories' low-power SOC microprocessor C8051F020, which has 64K Flash program space, 4K externally expanded RAM data space, 64 I/O input and output ports, crossbar switch and external memory expansion interface, 2 full Duplex asynchronous serial interface, 8-way 12-bit A/D converter and other rich on-chip resources; Flash memory AM29LVC040 has a storage capacity of 512KB, fast erasing and writing speed, and the number of times of erasing and writing can reach more than one million times; real-time The clock PCF8563 provides a time reference for the system, which can collect and store data according to the set sampling interval and storage interval, and can also wake up the single-chip microcomputer for automatic collection; the USB communication interface extended by CP2101 is used to realize communication with the computer; The computer interaction is realized through the LCD module SO12864-12CS with 128×64 graphics dot matrix and 3 common buttons, and the service is provided by the WYSIWYG Chinese menu embedded in the software; the voice service is provided by the storage voice chip PM50100 and 8 Composed of ohm speakers, it provides voice output and alarm functions; power management uses low-dropout voltage regulator chip TPS7333 to output 3.3V for system work, TPS2044 for power management, battery charging management module composed of AS1117 and LTC4055 to realize lithium battery charging Automatic management.

A 3.6V/600mAh lithium battery is used as the power supply for the system. The main control circuit and the power of each module are turned on through the low-dropout voltage regulator chip TPS7333 and the key switch. After the microcontroller is reset, the LCD is lit, and the current system time and the acquired The sensor data, the number of records and the system status are displayed. At the same time, the voice switch can be turned on to broadcast the collected values by voice. The user can set the operating parameters of the system according to the needs. The system parameters can be set through the 3 buttons on the instrument panel and the LCD Chinese It can be implemented through the menu, and the stored historical data records can be queried, browsed and deleted.

It is connected to the computer through the USB interface, and the communication between the lower computer and the upper computer is transparent and reliable through the embedded ModBus protocol conforming to industrial standards. The auxiliary analysis software for the upper computer can quickly read and set the system parameters of the lower computer. Take real-time and historical data records, and perform data management and analysis on historical data.

Claims (2)

1. Tobacco barn environment measuring instrument, it is characterized in that: the upper surface of instrument box (1) is pasted with surface sticking film (2) and is fixed with liquid crystal module (3), button (4), loudspeaker (5), in place The side of the instrument box (1) is provided with a charging adapter interface (6), a USB interface (7), and an audio interface (8), and a circuit board (10) is fixed with screws (9) in the instrument box (1) , a single-chip microcomputer (11) is welded on the circuit board, and the single-chip microcomputer (11) is welded on the circuit board (10) through the circuit board (10) and the temperature and humidity dew point integrated sensor (12), gatekeeper Dog reset circuit (13), storage module (14), clock module (15), button battery (16), power management module (17), communication module (18), voice module (19), speaker interface (20), The button interface (21), the lithium battery and the interface (22), the JTAG port (23), and the liquid crystal interface (24) are electrically connected. 2. The tobacco curing room environment measuring instrument as claimed in claim 1, characterized in that said single-chip microcomputer (11) is a microprocessor, and software for data collection and processing is installed inside said microprocessor; The peripheral circuit of the processor is composed of a read-write data storage module (14), a clock core module (15) and a button battery independently powered for the clock chip, a voice module (19) and a loudspeaker, and an output 3.3V voltage low-dropout regulator chip , a power consumption management chip, and a charging management module; the temperature and humidity dew point integrated sensor (12) is composed of a temperature and humidity dew point integrated sensor and an interface circuit, and can be used to measure the temperature, humidity and dew point of the barn.

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