TWI396061B - A large water tower water level monitoring system with safety - Google Patents

Description

Safe action large-scale water tower water level monitoring system

The present invention relates to a "safety action large-scale water tower water level monitoring system", which utilizes the universality and convenience of the mobile control terminal system as a mobile phone to avoid the mobile terminal motion monitoring The hardware cost of the device, as well as the scope of different monitoring rights according to the account password, to achieve the security of unattended and remote monitoring of the water level of the large water tower at any time and anywhere, in order to avoid important industrial water, cooling water required And insufficient fire water, causing serious economic losses and endangering life.

According to the current design of the water tower water level monitoring system designed at home and abroad, most of them are operated in a closed network architecture, which is mostly carried out by personnel monitoring. This leads to the need for managers to grasp the load-related information and release in the monitoring center. Control orders, such as important places or factories that must use water, managers need to be on duty 24 hours a day to maintain the normal operation of the water; if it is a place that can withstand short-term water cuts, such as student residences, etc. When the water is out of the situation, the management personnel need to go to the treatment in a timely manner even after work, so as not to cause inconvenience to the user. Therefore, when the manager leaves the monitoring center, there is no other way to grasp the water level of the water tower except for the personnel of the site to notify the management personnel of the water stop emergency by telephone.

In addition, Advantech's "Water-level Monitoring System in the Brunei River" can transmit water level data to the monitoring server through the GPRS network. However, this system does not have a motor control function. When the water tower has a problem, it still needs to be The management personnel rushed to the site for processing, and did not provide the manager's mobile monitoring and management interface, so that they could not achieve the goal of mobile accessibility management anytime, anywhere.

At the same time, the foreign water level monitoring product "VIRTU-WELL ^TM WIRELESS REMOTE MONITORING" remote monitoring uses a wireless communication range of only 30 miles, and the management scope is limited to the vicinity of the monitoring system, which is inconvenient; however, Biene Electronics's "BieneRemote16GM" is the function of the water level abnormal alarm notification through the GSM newsletter service, but it has no control interface function, and the short message transmission has its shortcomings of time delay.

Further, as disclosed in the Republic of China Patent Gazette No. M312733, a mobile water pump positioning and operation monitoring device detects the positioning and operation data of the mobile water pump from the microprocessor and transmits the communication module (eg, GPRS/CDMA) transmits the detected data to the geographic information device monitoring platform. This patent has the function of water tower water level detection and pumping motor control, and the geographic information device monitoring platform refers to the computer. It still needs the fixed monitoring and management of personnel to achieve the purpose of mobile accessibility management anytime and anywhere.

The present inventors have continually tested the process methods and products in the spirit of creation, in the spirit of creation, and in the creation of methods and installation methods. Through numerous experiments and years of experience, the present invention has been improved. The present invention has been further proposed.

The main purpose of the present invention is to provide a safe mobile large-scale water tower water level monitoring system, which is provided with a power signal extraction circuit, an electric drive circuit, an embedded system, a GPRS module and an ultrasonic water level gauge. The large-scale water tower water level monitoring device of the controlled terminal cooperates with a mobile control terminal monitoring device to form a control loop, so that the water level monitoring of the large water tower can be equipped with outdoor, mobile, random and wide-range monitoring conditions, and then Achieving the goal of unattended operation and remote monitoring at any time and any place, so that large water towers in remote areas can be supplied unattended under normal water supply without the need for 24-hour shifts of management personnel, so that water tower water level monitoring is more in line with humanized management. .

The secondary object of the present invention is to provide a safe mobile large-scale water tower water level monitoring system, which can be based on the account number and password input when the mobile control terminal logs in to the large water tower water level monitoring device of the controlled terminal. Give the scope of monitoring authority set beforehand to improve the safety of water tower monitoring.

In the remainder, the best embodiment of the invention will be described in detail with reference to the drawings:

As shown in the first figure, it is a system architecture diagram of the present invention, which is provided with a controlled terminal (10) and a mobile control terminal (20) with a monitoring interface (21), and the controlled terminal (10) It is located in a large water tower and cooperates with a pumping motor (30) to include: an embedded system (11), a power signal extraction circuit (12), an electric drive circuit (13) and an ultrasonic water level gauge ( 14) and through the signal transmission of a GPRS module (15) and cooperate with the mobile control terminal (20) to form a control loop, wherein the embedded system (11, as shown in the second figure) is set to a single The microprocessor (111) of the chip 8051 is a data processing core, and the GPRS module (15) is operated through an RS232 interface (112) by an AT control command (116), so that the embedded system (11) and the mobile host are controlled. The terminal (20) can mutually transmit messages and control commands through the GPRS module (15), and the analog signals such as voltage and current of the power signal capturing circuit (12) are converted by PT and CT (Hall elements), and are actively AC to DC converter circuit (MAV Converter), obtain the average signal absolute value (MAV) of the two, the MAV of the voltage waveform is approximately equal to its rms value, and then through the A / D conversion IC (can be A The DC0804 analog converter is converted into an 8-bit digital signal and input to the I/O port of the microprocessor (111) of the embedded system (11). A relay control circuit (13, as shown in the third figure) is connected to the microprocessor (111) of the embedded system (11) via a transistor PNP amplifying circuit (131), which can be set as a single chip 8051. The I/O pin is controlled by the electric drive circuit (13) to control the start and stop of the pump motor (30). The ultrasonic water level gauge (14, as shown in the fourth figure) comprises: an ultrasonic wave transmitting circuit (141) and an ultrasonic wave receiving circuit (142), and the time difference between the transmission of the ultrasonic wave and the echo is received. Calculate the flight distance of the ultrasonic wave to convert the water level. The microprocessor (111) pin of the embedded system (11) is connected to the 40KHz oscillating circuit in the ultrasonic transmitting circuit (141), and the output of the pin of the microprocessor (111) is high (HIGH, logic is 1 When the 40KHz oscillating circuit is activated to generate a 40KHZ signal, it is transmitted through the ultrasonic wave. When the ultrasonic wave encounters the surface bounce, it will be transmitted back to the receiver of the ultrasonic receiving circuit (142, as shown in the fifth figure). (1421) At this time, because the signal is rather weak, the signal needs to be amplified by an amplifying circuit (1422), and the signal is amplified, and the noise is amplified accordingly, so that the noise is misidentified and the frequency is set to 40 kHz. The active filter circuit (1423) filters out the noise, and in order to prevent the active filter circuit (1423) from affecting the filter characteristics due to the load effect of the input terminal or the output terminal, a buffer circuit is provided at each of the input end and the output end ( 1424, 1424'), when the filtered signal maintains a 40 kHz signal, but there is still a small amplitude of noise, a small amplitude noise can be filtered out by a diode filter (1425). After the diode filtering (1425), the signal is further amplified. Road (1422 ') so that the signal becomes large, so that there is sufficient voltage can initiate a trigger circuit (1426). The mobile host (20) is configured as a mobile phone (201) supporting the JAVA programming language for writing the functions required for the monitoring interface (21), and the monitoring interface displayed by the mobile phone (201) ( 21, as shown in the sixth and seventh figures) is equipped with water tower water level monitoring (211, Water Tower), water level abnormality alarm (212, Pump Control), pumping motor control (213, Level Alert) and water level history information query (214, History Data) and other functions to receive the message of the host (10) or send a message to the host (10), but can operate on a mobile phone platform that supports JAVA and GPRS communication functions to form a mobile phone. (201) GPRS communication mode and the embedded system (11) GPRS module connected to the RS232 interface (112) to transmit messages to form a large water tower water level monitoring system.

When the mobile host (20) starts the water level monitoring (211) by the monitoring interface (21) of the mobile phone (201), the embedded system (11) of the controlled terminal (10) is as shown in the eighth figure. The GPRS module (15) receives the command issued by the mobile host (20, as shown in Figure 9) and transmits the water level information detected by the ultrasonic water level gauge (14) to the monitoring interface. (21) Presenting the current water level of the large water tower, the status of the water level (Status) and the data arrival delay time (as shown in the tenth figure) for the mobile control terminal (20) ) The water level of the large water tower can be controlled at any time, and once the ultrasonic water level gauge (14) detects that the water level exceeds the water level set by the embedded system (11) (Water Level Hi Setup) or lower than the embedded system (11) When the Water Level Lo Setup is set (as shown in Figure 11), the embedded system (11) will actively transmit the value of the water level abnormality to the mobile type through the GPRS module (15). The water level abnormality alarm (212) is issued by the monitoring interface (21) of the telephone (201). At this time, the mobile control terminal (20) can be monitored by the monitoring interface (21). The pump control (213) (pictured as shown in Fig. 12) is controlled by the Pump Control Switch to control whether the pumping motor (30) is activated or deactivated to assist the user in understanding whether the pumping motor (30) is activated. Or damage, the pump motor control (212) screen also provides the pumping motor (30) state (Pump is), the pumping motor (30) voltage (Pump Voltage), the pumping motor (30) current (Pump Current) And the delay time (Response Time) for executing the control command. The command of the pumping motor control (212) is transmitted to the embedded system (11) via the GPRS module (15), and the pumping motor (30) is started to drive water or stop running by driving the electric driving circuit (13) according to the command request. The mobile host (20) automatically archives each received message for the administrator to know from the water level history data query (214, as shown in FIG. 13) of the monitoring interface (21). The abnormal frequency of the water tower determines the maintenance time, thereby enabling the water level monitoring of the large water tower to be equipped with outdoor, mobile, random and wide-ranging monitoring conditions, thereby achieving unattended and mobile monitoring at any time and anywhere. Management purposes, to avoid important places to prevent industrial water, cooling water and fire water shortages, set up a special management staff to be stationed in a 24-hour shift, in order to provide more humane management of water level monitoring, and According to the account number and password entered by the mobile control terminal (20) when logging in to the large water tower water level monitoring device of the controlled terminal (10), the monitoring permission range set beforehand is given to improve the safety of the water tower monitoring.

In summary, when the invention is industrially usable and progressive, and the invention is not found in any publication, it is also novel, and when it complies with the provisions of Articles 21 and 22 of the Patent Law, To file an application for a patent for invention, please ask your reviewer to pay for the patent as a prayer.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto; that is, the equal variation and modification of the scope of the patent application of the present invention should still belong to the present invention. Within the scope of the patent.

10. . . Controlled end

11. . . Embedded Systems

111. . . microprocessor

112. . . RS232 interface

113. . . Power signal acquisition

114. . . Electric control

115. . . Water level measurement

116. . . AT control command

12. . . Power signal capture circuit

13. . . Electric drive circuit

131. . . Transistor PNP amplifying circuit

14. . . Ultrasonic water level gauge

141. . . Ultrasonic wave transmitting circuit

142. . . Ultrasonic receiving circuit

1421. . . receiver

1422, 1422’. . . amplifying circuit

1423. . . Active filter circuit

1424, 1424’. . . Buffer circuit

1425. . . Diode filter

1426. . . Trigger circuit

15. . . GPRS module

20. . . Mobile host

201. . . Mobile phone

twenty one. . . Monitoring interface

211. . . Water tower water level monitoring

212. . . Water level anomaly alarm

213. . . Pump motor control

214. . . Water level history information inquiry

30. . . Pumping motor

The first figure is the overall system architecture diagram of the present invention.

The second figure is a diagram of the embedded system architecture of the present invention.

The third figure is a circuit diagram of the electric drive circuit of the present invention.

The fourth figure is a circuit diagram of the ultrasonic water level gauge of the present invention.

Fig. 5 is a flow chart of the ultrasonic receiving circuit of the present invention.

Figure 6 is a block diagram of the monitoring interface function of the present invention.

Figure 7 is a schematic diagram of the monitoring interface of the mobile phone of the present invention.

Figure 8 is a flow chart of the operation of the embedded system program of the present invention.

The ninth diagram is a flow chart of the operation of the action monitoring interface program of the present invention.

Figure 10 is a schematic diagram of water level monitoring of the water tower of the monitoring interface of the present invention.

Figure 11 is a schematic diagram of the water level anomaly alarm of the monitoring interface of the present invention.

Twelfth Diagram: Schematic diagram of the pumping motor control of the monitoring interface of the present invention.

Figure 13 is a schematic diagram of water level history data query of the monitoring interface of the present invention.

10. . . Controlled end

11. . . Embedded Systems

111. . . microprocessor

112. . . RS232 interface

12. . . Power signal capture circuit

13. . . Electric drive circuit

14. . . Ultrasonic water level gauge

15. . . GPRS module

20. . . Mobile host

201. . . Mobile phone

twenty one. . . Monitoring interface

30. . . Pumping motor

Claims (7)

A safe action large-scale water tower water level monitoring system, which is provided with a power signal acquisition circuit, an electric drive circuit, an embedded system, a GPRS module and a supersonic water level gauge controlled terminal The large water tower water level monitoring device cooperates with a mobile control terminal of the mobile phone to form a control loop, wherein the embedded system is provided with a microprocessor as a data processing core, and the AT control command is transmitted through an RS232 interface. The GPRS module is operated to enable the embedded system and the mobile host to transmit messages and control commands through the GPRS module; and the I/O port of the embedded system can be used to connect the ultrasonic water level measurement The water level information of the large water tower, the power signal capture circuit measures the current running voltage and current value of the pumping motor and the electric drive circuit to control the start and stop of the pump motor, and the mobile control terminal is a JAVA programming language. Write a mobile phone with a monitoring interface, which can be operated on a mobile phone platform that supports JAVA and GPRS communication functions. By using mobile phones, GPRS communication and follow-up The input system uses the RS232 interface to connect GPRS modules to exchange messages and control commands to achieve unattended security and remote monitoring of large water tower water levels at any time and any place. For example, the safe action large-scale water tower water level monitoring system described in claim 1 of the patent scope, wherein the microprocessor of the embedded system can be set as a single chip 8051. For example, the safe action large-scale water tower water level monitoring system described in claim 1 wherein the analog signal such as voltage and current of the power signal extraction circuit is converted by PT and CT (Hall element) The active AC-to-DC converter circuit (MAV Converter) obtains the average signal absolute value (MAV) of the two signals. The MAV of the voltage waveform is approximately equal to its rms value, and then passes through the A/D conversion IC (which can be an ADC0804 analog converter). ), converted to 8-bit number The bit signals are input to the I/O ports of the microprocessor of the embedded system. For example, the safe action large-scale water tower water level monitoring system described in claim 1 wherein the relay control circuit is connected to the embedded system via a transistor PNP amplifying circuit. The I/O pin of the device can be used to control the start and stop of the pumping motor through the electric drive circuit. For example, the safe action large-scale water tower water level monitoring system described in claim 1 wherein the ultrasonic water level gauge comprises: an ultrasonic transmitting circuit and an ultrasonic receiving circuit, and the ultrasonic wave is emitted. The time difference between the echo and the echo is calculated to calculate the flight distance of the ultrasonic wave to convert the water level. The microprocessor pin of the embedded system is connected to the 40KHz oscillating circuit in the ultrasonic transmitting circuit, and the foot of the microprocessor The bit output is high (HIGH, logic is 1) to enable the 40KHz oscillator circuit to start generating a 40KHZ signal. It is transmitted through the ultrasonic wave. When the ultrasonic wave passes over the water surface, it will be transmitted back to the ultrasonic receiving circuit. The receiver, at this time, because the signal is quite weak, the signal needs to be amplified by an amplifying circuit, and the signal is amplified, and the noise is amplified accordingly, so that an active filter circuit of 40 kHz is set due to the misjudgment of the noise. Noise filtering, and in order to avoid the active filter circuit affecting its filtering characteristics due to the load effect of the input or output, it is set at its input and output. A buffer circuit, when the filtered signal maintains a 40 kHz signal, but still has a small amplitude of noise, a binary filter can be used to filter out the smaller amplitude noise, and the diode is filtered. The latter signal is then passed through another amplifier circuit to make the signal larger so that there is enough voltage to activate a trigger circuit. Action-oriented large-scale security as described in item 1 of the patent application scope Water tower water level monitoring system, wherein the monitoring interface displayed by the mobile phone is provided with Water Tower, Pump Control, Level Alert and History Data. And other functions to receive the message of the host or send a message to the host. For example, the safe action large-scale water tower water level monitoring system described in claim 6 wherein the pump control of the monitoring interface provides the state of the pumping motor and the voltage of the pumping motor ( Pump Voltage), pump current (Pump Current) and the execution of the control command delay time (Response Time) and other functions to receive the message of the host to help the user understand whether the pump motor is activated or damaged.