CN203658872U - Swimming pool temperature and liquid level monitoring and alarm instrument - Google Patents

Abstract

The utility model discloses a swimming pool temperature and liquid level control and alarm device, which belongs to the technical field of measurement and control. The device includes an upper computer and a lower computer. The lower computer includes a power supply module, a temperature acquisition module, a liquid level acquisition module, a first single-chip microcomputer, an LCD display module, a temperature control module, a liquid level alarm module and a first wireless module; the upper computer includes a second Two single-chip microcomputer, keyboard circuit, second wireless module and liquid crystal display circuit, the output end of the second single-chip microcomputer is connected with the input end of the liquid crystal display circuit, the output of the keyboard circuit is connected with the input interface of the second single-chip computer, and the second wireless module is connected through the communication interface The circuit is connected with the second single-chip computer; the upper computer and the lower computer are connected by communication through the first and second wireless modules. By adopting the above technical solution, it can effectively monitor and accurately control the temperature and liquid level in real time.

Description

Swimming pool temperature and liquid level monitor and alarm

technical field

The utility model discloses a swimming pool temperature and liquid level monitoring and alarm instrument, which belongs to the technical field of measurement and control.

Background technique

In daily life, people have higher and higher requirements for life, and subtle changes can cause changes in people's senses. Swimming has become an essential sport for people. At the same time, the constant temperature and liquid control technology of swimming pools is also developing rapidly. Swimming pool temperature and its liquid level alarm control occupy a very important position in swimming pool control. At present, the overall technical level of constant temperature control technology is at the level of the middle and late 1980s. Mature products are mainly based on "point" control and conventional PID controllers. It can only adapt to the general temperature system control, and it is difficult to control the hysteresis, complex and time-varying temperature system control. In the field of intelligent and self-adaptive control instruments suitable for higher control occasions, the domestic technology is not very mature, and there are few control instruments that have been commercialized and widely used. Therefore, more intelligent, more flexible and more advanced control systems are required.

Contents of the invention

The technical problem to be solved by the utility model is to provide a digital, intelligent and wireless multifunctional controller for constant temperature and liquid level of the swimming pool in view of the deficiency of the above-mentioned background technology.

The utility model adopts following technical scheme for realizing above-mentioned purpose:

The swimming pool temperature and liquid level monitoring and alarm instrument of the utility model includes a host computer and a lower computer, and the lower computer includes a power supply module, a temperature acquisition module, a liquid level acquisition module, a first single-chip microcomputer, an LCD display module, a temperature control module, and a liquid level controller. The alarm module and the first wireless module, the power supply module, the temperature acquisition module, and the liquid level acquisition module are connected to the first single-chip microcomputer, and the output end of the first single-chip microcomputer is connected to the input port of the LCD display module, the temperature control module, and the liquid level alarm module , the first wireless module is connected with the first single-chip microcomputer through the communication interface circuit; the upper computer includes the second single-chip computer, keyboard circuit, second wireless module and liquid crystal display circuit, the output end of the second single-chip microcomputer is connected with the input end of the liquid crystal display circuit, The output of the keyboard circuit is connected with the input interface of the second single-chip computer, and the second wireless module is connected with the second single-chip computer through the communication interface circuit; the upper and lower computers are connected through the first and second wireless modules.

The further design of the utility model is;

The temperature acquisition module adopts a digital temperature sensor, and the liquid level acquisition module adopts a wireless float water level sensor.

The temperature control module adopts relay control.

The temperature acquisition module adopts digital temperature sensor DS1820; the liquid level acquisition module adopts wireless float water level sensor.

Compared with the prior art, the utility model has the following advantages:

The swimming pool constant temperature control and liquid level alarm system uses STC89C51 microcontroller as the controller to control the water temperature and liquid level of the swimming pool and set the alarm liquid level and alarm temperature.

The instrument uses the temperature acquisition module DS18B20 for data acquisition, and converts the detected temperature signal into a standard voltage signal and inputs it to the analog-to-digital interface conversion circuit; the digital signal output by the analog-to-digital interface conversion circuit is sent to the single-chip system; Receiving the set temperature, the relay controls the rotation of the two motors. The liquid level is measured by the wireless float water level sensor, and the liquid level is transmitted to the host computer for display through the wireless module in real time, and can perform sound and light alarm.

The utility model designs a swimming pool temperature and liquid level monitoring and alarm instrument, which can be used for real-time and digital measurement of temperature and liquid level, and can be transmitted to the upper computer management system through wireless. The water temperature is controlled by single-chip microcomputer AT89C51, the water temperature is measured by a digital temperature sensor, and the real-time display of the current temperature can be realized through a digital liquid crystal display, and the liquid level of the swimming pool can be measured and displayed at the same time.

Description of drawings

Fig. 1 is a functional block diagram of the lower computer of the swimming pool temperature and liquid level monitoring and alarming instrument of the present invention.

Fig. 2 is the functional block diagram of the upper computer of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the technical scheme of invention is described in detail:

In the swimming pool temperature and liquid level monitoring and alarm instrument of the utility model, the first and second single-chip microcomputers all use STC89C51 single-chip microcomputers as controllers to control water temperature and liquid level, and can alarm liquid level and alarm temperature.

As shown in Figure 1 and Figure 2, the device includes a host computer and a lower computer, and the lower computer includes a power supply module, a temperature acquisition module, a liquid level acquisition module, a first single-chip microcomputer, an LCD display module, a temperature control module, a liquid level alarm module and The first wireless module, the power supply module, the temperature acquisition module, and the liquid level acquisition module are connected to the first single-chip microcomputer, and the output end of the first single-chip microcomputer is connected to the input port of the LCD display module, the temperature control module, and the liquid level alarm module. The wireless module is connected with the first single-chip computer through the communication interface circuit; the host computer includes the second single-chip computer, keyboard circuit, second wireless module and liquid crystal display circuit, the output end of the second single-chip computer is connected with the input end of the liquid crystal display circuit, and the keyboard circuit The output is connected to the input interface of the second single-chip computer, and the second wireless module is connected to the second single-chip computer through the communication interface circuit; the upper and lower computers are connected through the first and second wireless modules.

The temperature acquisition module adopts digital temperature sensor DS18B20 to collect temperature signal, which has small size, high precision, wide applicable voltage and strong anti-interference ability. The relay controls the rotation of the two motors, and controls the hot water valve and the cold water valve respectively, so as to realize the real-time control of the water temperature. The liquid level acquisition module uses a wireless floating ball water level sensor to convert the detected temperature signal and liquid level signal into a standard voltage signal and input it to the analog-to-digital interface conversion circuit; the digital signal output from the analog-to-digital interface conversion circuit enters the first single-chip computer; the second A single-chip microcomputer compares the input digital signal with the set signal, then controls the relay to output the corresponding signal, and displays the temperature and liquid level.

The power module provides electric energy for the whole system; an intelligent temperature sensor will be used in this system. Its main advantage is that it adopts digital technology, can directly output the measured temperature value in digital form, and has small temperature measurement error, high resolution and strong anti-interference ability. It can transmit data remotely, the user can set the upper and lower limits of the temperature, has the automatic alarm function of exceeding the limit, has the advantages of serial bus interface, etc., adapts to various microcontrollers, including microprocessors and single-chip microcomputers. It is an indispensable core device for a new generation of temperature measurement and control system with high cost performance.

The temperature acquisition module of this system adopts the DS1820 single-line intelligent temperature sensor produced by DALLAS Semiconductor Company of the United States, which belongs to the new generation of intelligent temperature sensor adapted to the microprocessor, and can be widely used in temperature measurement and Control instruments, measurement and control systems and large equipment. Four contacts are placed around the swimming pool for liquid level collection. When the water level reaches the contacts, a signal is sent to the microcontroller. The advantage of this method is high sensitivity, simple circuit, convenient and fast.

In order to make the human-computer interaction interface of the system better, the liquid level alarm module sets two alarm signals, which are two red light-emitting diodes, which are used to display over-limit alarms and error input alarms. When the water temperature of the swimming pool is higher than the upper limit temperature set by the staff or lower than the set lower limit temperature, it is considered that an over limit has occurred, and the over limit alarm light (LED1) lights up, indicating that the operation has an over limit alarm, reminding the work Personnel attention. When the temperature of the swimming pool starts to rise from a low temperature, the system will give an over-limit alarm before reaching the lower limit temperature. When an over-limit alarm occurs, the staff should pay attention to whether this is the case, which can be ignored. Mis-input alarm (LED2) is mainly used in keyboard management. When using the keyboard to set the constant temperature, upper and lower limit temperature, if the staff does not operate according to the steps required in the instructions, it is the so-called misoperation. When there is a wrong operation, the wrong input alarm light is on. At this time, the staff should check the input, check the instructions and make corrections. Over-limit alarm and mis-input alarm are drawn from the P2.5 and P2.6 ports of the first single-chip microcomputer respectively, and the resistor connected thereon is a current-limiting resistor, which is used to prevent the light-emitting diode from being burned due to excessive current. The liquid level is detected by the liquid level acquisition module, that is, the wireless float water level sensor, and then the LCD is used to dynamically display the water temperature. Once the set liquid level is exceeded, the liquid level alarm system will be activated immediately.

Claims (4)

1. swimming pool temperature and liquid level monitoring and alarm, it is characterized in that: comprise host computer and slave computer, slave computer comprises power module, temperature collect module, liquid level acquisition module, the first single-chip microcomputer, LCD display module, temperature control modules, liquid level warning module and the first wireless module, described power module, temperature collect module, liquid level acquisition module is connected with the first single-chip microcomputer, the output terminal of the first single-chip microcomputer and LCD display module, temperature control modules, the input port of liquid level warning module is connected, the first wireless module is connected with the first single-chip microcomputer by communication interface circuit, host computer comprises second singlechip, keyboard circuit, the second wireless module and liquid crystal display circuit composition, the output terminal of second singlechip is connected with the input end of liquid crystal display circuit, the output of keyboard circuit is connected with second singlechip input interface, and the second wireless module is connected with second singlechip by communication interface circuit, upper with and slave computer communicate to connect by first, second wireless module.

2. swimming pool temperature according to claim 1 and liquid level monitoring and alarm, is characterized in that: described temperature collect module adopts digital temperature sensor, and described liquid level acquisition module adopts wireless ball float water level sensor.

3. swimming pool temperature according to claim 1 and liquid level monitoring and alarm, is characterized in that: described temperature control modules adopts Control.

4. according to swimming pool temperature and liquid level monitoring and alarm described in claim 1,2 or 3, it is characterized in that: temperature collect module adopts digitaltemperaturesensorDS1820; Liquid level acquisition module adopts wireless ball float water level sensor.

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