CN110455349A - Card Type Portable Environmental Detector - Google Patents

Abstract

The invention relates to the technical field of environment detection, and particularly discloses a card type portable environment detector which comprises a shell, a temperature and humidity sensor, a body temperature sensor, an ultraviolet sensor, an air quality sensor, a single chip microcomputer, a battery and a display screen. The invention realizes the effects of convenient carrying, low power consumption, accurate measurement and various detections.

Description

Card Type Portable Environmental Detector

technical field

The invention relates to the technical field of environmental detection, in particular to a card type portable environmental detection instrument.

Background technique

In terms of environmental detection, there are currently many smart detectors, but most of them have shortcomings such as large size, increased measurement error over time, and high power consumption. They usually require manual real-time monitoring and regular maintenance. Some existing smart temperature and humidity The monitoring and alarm device also has shortcomings such as less measurement data and inconvenient portability. In addition, in terms of application, the existing technology cannot be used in both homes and factories. Usually, two machines need to be purchased, which is very expensive.

Therefore, the traditional environmental monitoring instrument consumes a lot of power, is expensive, and is not suitable for travel. At the same time, the error is large and cannot be accurate, causing great troubles to people's travel. What is even more lacking is the measurement data of ordinary measuring devices on the market. single.

Contents of the invention

The purpose of the present invention is to provide a card-type portable environmental detector to achieve the effects of convenient portability, low power consumption, accurate measurement, and various detections.

In order to solve the above technical problems, the present invention provides a card-type portable environment detector, which is characterized in that it includes a housing, a temperature and humidity sensor, a body temperature sensor, an ultraviolet sensor, an air quality sensor, a single-chip microcomputer, a battery and a display screen. The housing is in the shape of a card, and the temperature and humidity sensor, body temperature sensor, ultraviolet sensor, air quality sensor and display screen are all arranged on the housing, the single-chip microcomputer and the battery are arranged inside the housing, and the temperature A humidity sensor, a body temperature sensor, an ultraviolet sensor, an air quality sensor and a display screen are all connected to the single-chip microcomputer, and the battery is used to supply power to each component.

Preferably, the single-chip microcomputer is a stm32 single-chip microcomputer.

Preferably, the temperature and humidity sensor is a BME680 chip.

Preferably, the body temperature sensor is a SI7051 chip.

Preferably, the ultraviolet sensor is a SGP30 chip.

Preferably, the air quality sensor is a SI1133 chip.

Preferably, the housing has a length of 70-90 mm, a width of 40-60 mm, and a thickness of 2-20 mm.

Preferably, the display screen is a fluorescent display screen.

Preferably, the body temperature sensor is detachably mounted on the housing.

Preferably, the material of the housing is silica gel or plastic.

The card-type portable environment detector of the present invention adopts a plurality of sensor chips with different functions, and the sensors coordinate with each other to achieve the purpose of measuring indoor and outdoor temperature, humidity, ultraviolet intensity and air quality according to the requirements of different users. The low-power single-chip microcomputer system reduces the overall size of the card-type portable environmental detector, which greatly meets the needs of the community, reduces energy consumption, prolongs its standby time, and increases cost performance. Users only need to watch the same display screen , you can know all the measurement data. The detachable split body temperature sensor separates the temperature acquisition unit from the display control unit, which is convenient for users to detect, and is more convenient for long-term monitoring in places where many detectors are inconvenient in the family.

Description of drawings

Fig. 1 is a schematic structural diagram of the card-type portable detector of this embodiment.

In the figure, 1: casing; 2: display screen; 3: infrared probe; 4: body temperature sensor; 5: switch; 6: battery; 7: temperature and humidity sensor; 8: ultraviolet sensor; 9: air quality sensor.

Detailed ways

Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, unless otherwise clearly stipulated and limited, the terms "mounted", "connected" and "connected" should be interpreted in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical A connection can also be an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

As shown in Figure 1, the card-type portable environment detector of the present embodiment includes: housing 1, temperature and humidity sensor 7, body temperature sensor 4, ultraviolet sensor 8, air quality sensor 9, single-chip microcomputer (shown in the figure), battery 6 and display 2. The housing 1 is card-shaped, and the temperature and humidity sensor 7, the body temperature sensor 4, the ultraviolet sensor 8, the air quality sensor 9 and the display screen 2 are all arranged on the housing 1, and the single-chip microcomputer and the battery 6 are arranged inside the housing 1. The sensor 7, the body temperature sensor 4, the ultraviolet sensor 8, the air quality sensor 9 and the display screen 2 are all connected with the single-chip microcomputer, and the battery 6 is used to supply power for each component. The four chips inside the shell 1 interact with the single-chip microcomputer, and then through the connection between the single-chip microcomputer and the ADC chip, the data is transmitted to the digital display 2, and then the user can see the measurement data. The inside of the shell 1 is a circuit board, and the circuit board is connected various components.

The single-chip microcomputer is stm32 single-chip microcomputer, which adopts an embedded low-power consumption system, greatly reduces the occupied space, improves efficiency, greatly prolongs its service life, greatly facilitates users, and improves the cost performance of the product.

The temperature and humidity sensor 7 is a BME680 chip. For measuring indoor and outdoor temperature, humidity and air pressure, BME680 chip is used. Its characteristics are: adopt MEMS type sensor, small size, low power consumption, high reliability; wide voltage input, compatible with 3.3V/5V controller; highly integrated environmental sensor , temperature, humidity, air pressure and TVOC, four-in-one environmental parameter monitoring; I2C interface; the module is small in size and easy to install.

The body temperature sensor 4 is a SI7051 chip. For measuring body temperature, SI7051 chip is used, which features: a frequency band gap temperature sensing element, a current-to-digital converter with a resolution of up to 14 digits, signal processing, data calibration functions, and an I2C interface; the device is fully factory calibrated And provide 3x3mm DFN package; wide operating voltage range (1.62V to 1.98V or 1.9V to 3.6V) – 40 to +125°C operating temperature range can maintain accuracy in the entire operating temperature and voltage range; low power consumption: 1Hz The sample rate requires an average of 195mA and can run for years on a single coin cell battery.

The ultraviolet sensor 8 is a SGP30 chip. The SI1133 chip is used to detect ultraviolet rays, and its characteristics are: accurate UV index sensing, high-performance proximity sensing, etc.; high-performance proximity sensing and gesture recognition.

The air quality sensor 9 is a SI1133 chip. For measuring air quality, SGP30 chip is used, which is characterized by: metal oxide gas sensor with multiple sensing elements; with calibrated air quality output signal; easy to integrate, metal oxide gas sensor can be integrated into the smart detection card.

The card-shaped structure of the housing 1 can be the size similar to a bank card, or slightly thickened like a cigarette box. The length of the housing 1 is 70-90 mm, the width is 40-60 mm, and the thickness is 2-20 mm.

The display screen 2 may be a fluorescent display screen. An infrared probe 3 may also be provided on the housing 1 to facilitate the measurement of the sensor. The body temperature sensor 4 can be arranged on the casing 1 in a detachable form, and a small groove can be provided on the side of the casing 1, and a blade-shaped body temperature sensor is arranged in the small groove, and this body temperature sensor can be connected with the casing. The body realizes the plug-in function, and actually realizes the plug-in function with the single-chip microcomputer, so that the temperature acquisition unit and the display control unit are separated, which is convenient for the user to detect, and is more convenient for long-term monitoring in places where many detectors are inconvenient in the family. The material of the shell 1 can be silicone or plastic.

The working principle of the card-type portable detector of this embodiment is: four sensor chips are connected to the single-chip microcomputer, because they are processed at different times, so the different functions of the four sensors are realized by using the method of external connection in turn, and the measured The environmental data is input into the stm32 MCU in the form of high and low levels, that is, analog signals, and the voltage value is converted into parallel or serial data through the ADC chip, and sent to the IO interface of the stm32 MCU, and the ADC chip is also It must be controlled by a single-chip microcomputer, and then the data converted by the ADC is compared with the reference value to obtain the formula, and finally the data is displayed on the digital display. The actual working process is as follows: the user can take out the card (i.e. the card type portable environmental detector) before going out, use the ultraviolet sensor 8 to measure the ultraviolet intensity, wait a little while, the outdoor ultraviolet intensity will be displayed on the digital display 2; Simultaneously, the same is true for measuring the air quality, take out the card, utilize the air quality sensor 9 to measure the air quality, the parameters shown on the display screen 2 will greatly provide convenience for the daily user's travel; of course, after measuring the above parameters Under certain conditions, temperature and humidity are also essential. The temperature and humidity sensor 7 can be used to measure the parameters of temperature and humidity. At the same time, the user can also use it for long-term detection indoors. The function of the temperature sensor 4 is to measure indoor and outdoor temperatures, and the parameters are also displayed. Displayed on the screen for the user's daily life.

The card-type portable environment detector of the present invention adopts a plurality of sensor chips with different functions, and the sensors coordinate with each other to achieve the purpose of measuring indoor and outdoor temperature, humidity, ultraviolet intensity and air quality according to the requirements of different users. The low-power single-chip microcomputer system reduces the overall size of the card-type portable environmental detector, which greatly meets the needs of the community, reduces energy consumption, prolongs its standby time, and increases cost performance. Users only need to watch the same display screen , you can know all the measurement data. The detachable split body temperature sensor separates the temperature acquisition unit from the display control unit, which is convenient for users to detect, and is more convenient for long-term monitoring in places where many detectors are inconvenient in the family.

The embodiments of the present invention have been presented for purposes of illustration and description, but are not intended to be exhaustive or to limit the invention to the form disclosed. Many modifications and changes will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to better explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention and design various embodiments with various modifications as are suited to the particular use.

Claims (10)

1. a kind of card form portable environments detector, which is characterized in that including shell, Temperature Humidity Sensor, body temperature transducer, purple Outside line sensor, air quality sensor, single-chip microcontroller, battery and display screen, the shell are card-like, the temperature and humidity sensing Device, body temperature transducer, UV sensor, air quality sensor and display screen are all provided on the housing, the single-chip microcontroller The inside of the shell is located at battery, the Temperature Humidity Sensor, body temperature transducer, UV sensor, air quality pass Sensor and display screen are connect with the single-chip microcontroller, and the battery is used to power for each component.

2. card form portable environments detector according to claim 1, which is characterized in that the single-chip microcontroller is that stm32 is mono- Piece machine.

3. card form portable environments detector according to claim 1, which is characterized in that the Temperature Humidity Sensor is BME680 chip.

4. card form portable environments detector according to claim 1, which is characterized in that the body temperature transducer is SI7051 chip.

5. card form portable environments detector according to claim 1, which is characterized in that the UV sensor is SGP30 chip.

6. card form portable environments detector according to claim 1, which is characterized in that the air quality sensor is SI1133 chip.

7. card form portable environments detector according to claim 1, which is characterized in that the length of the shell be 70~ 90mm, width is 40~60mm, with a thickness of 2~20mm.

8. card form portable environments detector according to claim 1, which is characterized in that the display screen is fluorescence display Screen.

9. card form portable environments detector according to claim 1, which is characterized in that the body temperature transducer is with removable The form unloaded is set on the housing.

10. card form portable environments detector according to claim 1, which is characterized in that the material of the shell is silicon Glue or plastics.