KR20000018788U - Calendar Functionated Building Meters Checking System - Google Patents

Abstract

The present invention is a meter reading system that can integrate and display the reading values of water, electricity, gas meter and calorimeter on a monthly basis. The calendar function is added to the electronic counter to automatically display the accumulated value for every month. When the rotation speed sensor 7 generates a pulse according to the flow rate of the meter 8, the CPU 10 detects the pulse value and stores the data for each real-time band inputted from the RTC 11, and stores the month and the accumulated value. It outputs as data and calculates the cumulative value of each month and the corresponding month according to the external input signal and outputs it as data. Data is input and output to the external terminal through the transmission and reception interface (1). Signal transmission means with the external terminal is selected from the communication line 6, the transformer (2, 21), the infrared sensor (3, 31), the ultrasonic sensor (4, 41). The external terminal includes a portable terminal 5. You can read the exact month you want without reading on the same day every month.

Description

Metering Building Meters Checking System for Calendars

The present invention relates to a meter reading system capable of arbitrarily integrating and displaying the meter readings of water, electricity, gas meter and calorimeter on a monthly basis.

Existing counters integrate pulse values from water, electricity and gas meters and display only the final value. The display means is a mechanical counter attached to a meter, or an electronic counter installed at another place away from the counter, or a method of reading cumulative values (integrated values) through wired long-distance transmission in the same manner has been proposed. In this case, the flow rate of the meter is read as a pulse value, and the pulse value is continuously accumulated in the central processing unit for display or the data value is transmitted to the remote terminal together with the display and stored. Therefore, on the same day of every month, the bill is charged with the current month minus the previous month's cumulative value.

In the above, the meter reading through the wired transmission and reception is a method of calculating the data stored in the terminal through a separate computer program, and various problems have occurred and have not been executed for a long time. The most reliable and realistic way to read the meter is to visit each building and read the accumulated value through a mechanical or electronic counter. For these visits, the meter should be read on the same day of the month by the meter to calculate the exact monthly fee.

However, it is practically impossible for a meter reader to read every user on the same day each month. Therefore, the situation is to charge a roughly calculated average. As a result, many complaints have occurred in the process of charging.

The purpose of the present invention is to add a calendar function to the electronic counter to automatically display the cumulative value for every one month, and to read specific data values displayed on the external terminal on the same day every month. It is to ensure that accurate reading of the desired month can be achieved without reading.

1 is a block diagram of an embodiment of the present invention showing several transceivers simultaneously.

<Explanation of symbols for main parts of drawing>

1: Transmit and receive interface, 2, 21: Trans, 3, 31: Infrared sensor, 4, 41: Ultrasonic sensor, 5: Handheld terminal, 7: Speed sensor, 8: Meter, 15: Reed switch, 16: Magnet

The present invention is to achieve the above object, the rotational speed sensor is installed in various meters of the building and generates a pulse according to the flow rate; A real time clock (hereinafter RTC) for outputting a real time signal; Detects the pulse value of the rotational speed sensor and stores data for each real-time band inputted from the RTC, outputs the month and the cumulative value as data, and calculates the cumulative value of each month and the corresponding month according to an external input signal. A central processing unit (hereinafter referred to as a CPU) for outputting the data and checking the reception; Signal line which is selected from among communication line, transformer, infrared sensor and ultrasonic sensor that can output data value output from this central processing unit to external terminal through transmission and reception interface and receive the acknowledgment signal of the external terminal. Means, and a portable terminal including any one selected from the group consisting of a transformer, an infrared sensor, and an ultrasonic sensor capable of receiving the output signal of the signal transmission means other than the communication line among the signal transmission means and outputting the acknowledgment signal again. It is equipped with.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

In the drawing, a transformer (2), an infrared sensor (3) and an ultrasonic sensor (4), which are signal transmission means connected to a transmission / reception interface (1), and pairing means (21, 31, 41) are connected to a portable terminal ( It is shown as contained within 5). However, this is shown for convenience in order to understand, and in practice is employed separately for each means. In other words, when the transformers 2 and 21 are employed, the remaining infrared sensors 3 and 31 and the ultrasonic sensors 4 and 41 are not employed. Similarly, the infrared sensors 3 and 31, the ultrasonic sensors 4 and 41, And the communication line 6 is also selectively applied to each.

The rotation speed sensor 7 is a kind of rotation pulse generator. This is a rotor 7a of a meter 8, such as a water meter, an electric meter, a gas meter, a calorimeter, as a conductor, and the coil 7b connected to the CPU 10 is bitten by the rotor 7a. When the electron 7a rotates according to the flow velocity, an eddy current is generated, and pulsed electromotive force is obtained from the coil 7b by the electromotive force. The generated pulse of the rotation speed sensor 7 is input to the CPU 10.

The CPU 10 is connected with an RTC 11, an EPROM 12, a display (LCD) 13, a transmission / reception interface 1, switches SW1 to SW6, and the like. The RTC 11 stores time information on the year, month, and day and continuously outputs the real time to the CPU 10. This pyramid 12 performs a function of storing the data of the CPU 10 and outputting the data to the transmission / reception interface 1 only when the CPU 10 is interrupted.

The CPU 10 is basically interrupted when there is a reception signal of the portable terminal 5, and detects a pulse value of the rotation speed sensor 7 to store data for each real-time band inputted from the RTC 11 And outputs the month and cumulative values to the display 13, detects the input signals of the transmission and reception interface 1 and the switches SW1 to SW6, calculates the cumulative values of each month and the corresponding month, and transmits and receives the transmission and reception interface 1 And output to the display 13. Details regarding the algorithm of the CPU 10 will be described later.

Transistors TR1 and TR2 are provided between the CPU 10 and the transmission / reception interface 1 and between the CPU 10 and the pyrom 12 to minimize current consumption of the battery 14. The transistor on the side of the transmit / receive interface 1 (hereinafter referred to as TR1) has a base connected to the interrupt port of the CPU 10, an emitter connected to a power supply Vcc of the transmit / receive interface 1, and a collector 14 having a battery 14 Is connected to. Thus, when there is no external reception signal through the transmission / reception interface 1, the CPU 10 turns off TR1. When the reception signal is detected, an interrupt is generated through the reception signal line, and the CPU 10 wakes up and is connected to the reception signal line. Make the port disabled. This is because interrupts continue to occur during transmission and reception. Next, TR1 of the part of the transmission / reception interface 1 is turned on, and the CPU 10 enters the transmission / reception standby state. When the transmission and reception is finished, the power supply (Vcc) of the transmission and reception interface (1) is turned off and the TR1 is turned off. The interrupt port connected to the reception signal line is enabled and the CPU 10 enters the stop mode.

The transistor on the side of the pyramid 12 (hereinafter TR2) has a base connected to the output terminal of the CPU 10, an emitter connected to the power supply Vcc of the pyramid 12, and a collector connected to the battery 14. It is connected. Therefore, only when data is read or written to this pyrom (12), TR2 is turned ON, and when the operation is completed, it is turned OFF.

As an example, the display (LCD) 13 may display the usage amount in cubic meter values corresponding to two decimal places and days to thousands, from January to December, depending on the output of the CPU 10 as an embodiment. It is shown. However, the display 13 can set the data of the CPU 10 and the year, month, date, and time on the portion displaying the usage amount according to the operation of the switches (hereinafter referred to as SW1 to SW6), and can modify the usage amount. The display 13 displays the total usage, the current monthly cumulative amount, the previous month's cumulative amount, the previous month's monthly cumulative amount, and the previous month's cumulative amount.

SW1 is a reed switch for meter reading. SW1 is a switch used by the meter reader every time the meter is read, and it is recommended to attach a reed switch inside the case and to have a magnet outside the case to prevent moisture or dust from penetrating into the inside. desirable. SW2 is a button switch and it is a confirmation switch. SW3 is a button switch and a data and time correction switch. Press SW3 and one letter of the current display will flash. SW4 is a digit shift switch as a button switch. If you press SW3, the letters blink. If you press SW4, the next letter blinks, and each time you press SW4, the letters currently displayed on the display rotate and blink. SW5 is a digit up switch. Press SW5 to increase the blinking number by one. SW6 is a display item change switch.

In the transformer 2, which is one of the signal transmission means, a reed switch 15 is provided in a circuit with the transmission / reception interface 1. And a magnet 16 is provided next to the transformer 21 on the side of the portable terminal 5. Therefore, when the portable terminal 5 is brought into contact with the transformer 2 in a contactless manner, the magnet 16 connects the reed switch 15 to close the circuit of the transformer 2 so that the pulse between the transformer 2 and the transformer 21 is pulsed. Send and receive enemy electromotive force. When the transformers 2 and 21 are employed, the infrared sensors 3 and 31 and the ultrasonic sensors 4 and 41 are not employed.

The infrared sensor 3, which is one of the other signal transmission means, consists of a pair of light receiving units and a light emitting unit, and uses a photovoltaic type or a thermopile type. The infrared sensor 31 on the side of the portable terminal 5 also includes a pair of light-receiving units and a light-emitting unit for transmitting and receiving infrared signals to and from the infrared sensor 3. When the infrared sensors 3 and 31 are employed, the transformers 2 and 21 and the ultrasonic sensors 4 and 41 are not employed.

The ultrasonic sensor 4, which is another signal transmission means, also includes a pair of receivers and a transmitter in the same way as the infrared sensor 3, and the portable terminal 5 also has an ultrasonic sensor 41 having a receiver and a receiver. ) Is installed so that the ultrasonic sensor 4 and the ultrasonic sensor 41 exchange ultrasonic transmission and reception signals with each other. When the ultrasonic sensors 4 and 41 are employed, the transformers 2 and 21 and the infrared sensors 3 and 31 are not employed.

In addition to the transformer 21, the infrared sensor 31, and the ultrasonic sensor 41, the portable terminal 5 is provided with a series of switches SW for executing a remote control operation, and a connection signal of the switches SW. A CPU 17 for receiving and outputting the data and a memory (ROM) 18 for storing data sent from the CPU 10 side of the counter (parts other than the portable terminal) are stored. The switch SW functions as the switch SW1 of the counter.

Next, the reading method by the switch SW1 and each signal transmission means will be described.

The meter reading method by switch operation is as follows. Press SW1. When SW1 is pressed once more, the code number of the user (consumer) assigned to the meter is displayed on the display 13. When pressed again, the previous month's data value (the accumulated amount of the month) is shown on the display 13. Each time it is pressed once more, the previous month and the previous month will be displayed continuously. If you do not press the switch for about 2 minutes, it automatically returns to its original state.

Next, a method of reading by the portable terminal 5 will be described. When the user touches the transformer 21 of the portable terminal 5 against the transformer 2 (contactless) or sends a metering start signal of the portable terminal 5 at a certain distance, the CPU 10 communicates with the transmission / reception interface 1. Through the infrared sensor (3,31) or the ultrasonic sensor (4,41) to the portable terminal (5) wirelessly and transmits in both directions with the use code number.

The flow of data transmission and reception is as follows.

1. The CPU 10 of the counter (parts other than the portable terminal) is in the stop mode before the meter reading. Then, when a specific signal (a signal that causes the CPU to be woken up by the interrupt, not the data) first comes from the portable terminal 5, the CPU 10 of the counter wakes up by an interrupt and sends a reception ready completion signal to the portable terminal 5. .

2. The CPU 17 of the portable terminal 5 sends a work instruction (for example, a code number of the counter and an integrated value request of the previous month) to the CPU 10 of the counter.

3. The CPU 10 of the counter sends data values as instructed.

4. The CPU 17 of the portable terminal 5 stores the received data in the memory 18 and sends the data back to the CPU 10 of the counter.

5. The CPU 10 of the counter judges whether the returned data and the sent data are the same, and if it is the same, it sends an OK signal and if it is wrong, it sends data again.

6. The CPU 17 of the portable terminal 5 stores the data in the memory 18 together with the unique code number of the counter if the sent data is an OK signal.

7. If the data is not OK signal, repeat 4, 5, 6.

Since the present invention configured as described above has a calendar function, if the counter is accumulated so that the cumulative value, for example, from 0 o'clock on the first day of the month to 24 o'clock on the last day of the month, the meter can be read at any time next month, as well as the previous 1 The integrated value for months can be easily checked, reducing complaints from users' fees.

Claims (1)

A rotational speed sensor installed in various meters of the building and generating pulses according to the flow rate; A real time clock for outputting a real time signal; Detects the pulse value of the rotational speed sensor and stores data for each real-time band inputted from the real-time clock, outputs the month and the accumulated value as data, and calculates the accumulated value of each month and the corresponding month according to an external input signal. A central processing unit for outputting data and checking whether it is received; A communication line capable of outputting the data value output from the central processing unit to an external terminal through a transmission / reception interface and receiving an acknowledgment signal of the external terminal, which is one of a signal selected from a transformer, an infrared sensor, and an ultrasonic sensor. Portable means including any one selected from a transmission means, a transformer, an infrared sensor, and an ultrasonic sensor which can receive the output signal of the other signal transmission means except for the communication line and output the acknowledgment signal again. Meter reading system for various building meters with calendar function with terminal.