JPS6160199A - Telemeter abnormality detection system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an automatic meter reading system that automatically reads the consumption of gas, water, electricity, etc. to be read, and in particular accurately detects abnormalities in meter reading meters. The present invention relates to a meter reading meter abnormality detection method that can be used.

Recently, attempts have been made to shift the meter reading of gas, water, and electricity consumption used in households from on-site meter reading to automatic meter reading.

In automatic meter reading systems, the amount of electricity used is measured by integrating the pulses emitted from the meter reading meters, but abnormalities in the meter reading meters are detected without emitting pulses, and a method that can prevent such detection errors is desired. There is.

[Conventional technology]

FIG. 2 is a block diagram illustrating an automatic gas meter reading system.

In the figure, the area indicated by the two-dot chain line is the in-home device 2 that is connected to the meter reading meter l via a cable.

The meter reading meter 1 has a function of transmitting a pulse for each unit usage amount when the gas to be read is used.

The pulse input unit 3 recognizes the pulse a sent from the meter reading meter 1 and inputs the pulse integrator 4. and has a function of sending it to the abnormality determination section 5.

The pulse integration unit 4 has a function of integrating the input pulses a and measuring the usage N (usage amount data: b).

The abnormality determination unit 5 operates a timer 6 each time the pulse a is manually inputted.
It also has a function of determining that the test meter 1 is abnormal when it receives a signal e from the timer 6 indicating that it has not been cleared for a predetermined period of time, and transmitting a 57 normal discrimination Buddhist symbol f to the transmitter 7.

The timer 6 has a predetermined time T1 set therein, counts time using a clock signal C sent from a control section (not shown), and is cleared by a clear signal d from the abnormality determination section 5. If the timer 6 is not cleared for a predetermined time, That is, it has a function of sending a signal e to the abnormality determining section 5 when a predetermined time T is counted.

The communication unit 7 is connected to a center (not shown) via a line, and upon receiving a meter reading request from the center, receives usage data b from the pulse product Iγ unit 4 and transmits it to the center, and also detects an abnormality from the abnormality determination unit 5. When the judgment signal f is sent, it has the function of transmitting a judgment signal/signal g to the center.

Since it has such a configuration and function, the method of automatic gas usage meter reading and meter reading meter abnormality detection method will be explained as follows.
First, a pulse a is transmitted from the meter reading meter 1 every t amounts of gas used, and is inputted to the pulse integration section 4 via the pulse input section 3 and integrated. When a meter reading request signal is sent from the center to the transmitter 7 at a predetermined time, the pulse integrator 4 receives the integrated data.

Dose data b is output and sent to the center from the transmitter 7.

On the other hand, the pulse a input to the input section 3 is sent to the abnormality determining section 5, and the abnormality determining section 5 sends a clear signal d to the timer 6 to clear the count of the clock signal C. That is, when one sip of gas is used and the pulse a is being transmitted, the meter reading meter 1 is considered to be normal.

If the clear signal d is not sent from the abnormality determining section 5 to the timer 6 because the pulse a is not emitted, the lock signal C continues to count, and when a predetermined time has been counted, the signal e is output. When the abnormality determining section 5 receives the signal e, it determines that the meter reading meter 1 is abnormal and sends an abnormal/normal determination signal f to the transmitting section 7, and the transmitting section 7 sends a notification signal g notifying the center of the abnormality. .

In this way, automatic meter reading and abnormal detection of the meter reading meter can be performed.

[Problem that the invention seeks to solve]

According to the conventional method, if the pulse a emitted from the side makeup is not emitted for a predetermined period of time, it is determined that there is an abnormality in the meter reading meter. Even if the meter to be read is not used at all, there is a problem in that the meter is determined to be abnormal, resulting in a detection error.

[Means to solve problems]

The present invention includes a detection means for detecting an abnormality in a meter reading meter;
This meter reading meter abnormality detection method is characterized in that it is equipped with a prohibition instruction means for prohibiting detection by the detection means, and the prohibition force by the prohibition instruction means is detected by the detection means only when the prohibition force is released. can be solved.

[Function] □ According to the present invention, instead of the conventional method in which it is determined that the person's appearance is normal if the pulse a is not emitted from the meter reading meter for a predetermined period of time, there is provided a detection means for detecting an abnormality, and this detection means'
and a prohibition instructing means for prohibiting the detection of the meter, the detection function is stopped when the prohibition is instructed by the prohibition instructing means, and the pulse a emitted from the meter reading meter is emitted for a predetermined time or more only when the prohibition is canceled. By determining that the meter is abnormal if it is not used, it is possible to prevent a detection error in which the meter reading meter is determined to be abnormal if gas or the like has not been used for a long time.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG.

The same symbols as in FIG. 2 indicate the same objects.

In FIG. 1, the abnormality determination unit 5a sends a signal i to the timer 68 to stop counting when the meter reading meter abnormality detection is prohibited by the designated signal of the changeover switch 8, and when the prohibition is canceled, Release the stop and pulse a
The timer 6a is cleared each time the timer 6a is input, and when the timer 68 receives a signal e that has not been cleared for a predetermined period of time, it is determined that the meter reading meter 1 is abnormal and an abnormality determination signal f is sent.
It has a function of sending the alarm to the transmitting section 7 and the alarm outputting section 11.

The timer 6a receives a count stop command (
When there is no signal i), it has the same function as the timer 6 described in the conventional example, and when it receives a count stop instruction from the abnormality determining section 5a, it has a function of stopping time counting.

The changeover switch 8 is a switching instruction means for switching between an abnormality detection mode in which an abnormality in the meter reading meter is detected and an abnormality detection prohibition mode in which abnormality detection is prohibited.

In other words, the abnormality detection mode and the abnormality detection prohibition mode are the ``at-home (using gas, etc.) mode'' and the ``outing (not using gas, etc.) mode,'' and the out-of-home mode is a crime prevention mode, which will be described later.

The switch input unit 9 determines the input from the changeover switch 8, and when in the abnormality detection prohibition mode, the signal is output to the abnormality determination unit 5a,
and is sent to the AND circuit 13.

The sensor S1 is a detection means provided on a door, a window, etc. for crime prevention, and detects when a door or window is opened.

The detection signal input section 10 has a function of determining the detection signal S from the sensor S1 and sending it to the AND circuit 13.

The transmitting section 7a has a function of transmitting an alarm signal g to the center when the abnormality determination signal f is sent from the abnormality determining section 5a, and a crime prevention alarm signal k when the AND circuit 13 sends the crime prevention signal j.

The alarm output unit 11 outputs an abnormality alarm signal 1 when an abnormality determination signal f is sent from the abnormality determination unit 5a, and outputs a crime prevention alarm signal m when a crime prevention signal j is sent from the AND circuit 13.
It has a function of sending each to the notification section 12.

The notification unit 12 is constituted by, for example, an abnormal alarm buzzer 1 (not shown), an abnormal alarm lamp, a security alarm buzzer, and a security alarm lamp, and is a notification means that is activated by an abnormal alarm signal 1 or a security alarm signal m.

Since it has such a configuration and function, the operation will be explained. First, regardless of the mode set, meter reading of the amount of gas used is performed in the same manner as in the conventional method.

Under normal use, the selector switch 8 is in abnormality detection mode;
That is, the home mode is set, and in this case, the abnormality determining section 5a clears the timer 6a every time it receives a pulse sent from the pulse input section 3, and when no pulse is received, the timer 68 clears the time using the clock signal C. count. When the timer 68 detects a predetermined time, it sends a detection signal e to the abnormality determining section 5a, and when it is determined that the meter reading meter is abnormal, a normal stomach signal r is sent to the transmitting section 7a+ and the alarm output section 11. An abnormality alarm signal g is transmitted from the transmitter 7a to the center, and an abnormality alarm signal l is output from the alarm output 1 output section 11. Abnormality is reported.

Next, if you are going to be away for a long period of time, that is, if you are not going to use the device for a long time, switch the changeover switch 8 to the abnormality detection prohibition mode, that is, to the security mode before going out.

When the changeover switch 8 is switched, a signal is sent to the switch input section 9, and further sent to the abnormality determination section 5a and the AND circuit 13.

When the abnormality determination unit 5a receives the signal, it sends a signal i instructing the timer 68 to stop counting time, and the timer 6
a stops functioning. Therefore, even if no pulse is emitted from the detector 11 meter 1 for a predetermined period of time or more, no abnormality is detected.

If someone opens a door or window during this security mode, a sensor S detects this and a detection signal S is sent to an AND circuit 13 via a detection signal input section 10. Since the AND circuit 13 receives a signal, the signal j is output,
The signal j is sent to the transmitting section 7a and the alarm output section 11. Then, the communication unit 7a sends a crime prevention alarm signal k to the center.
At the same time, the alarm output section 11 outputs the crime prevention alarm signal m, and is notified by the crime prevention alarm buzzer and crime prevention alarm lamp of the notification section 12. When the crime prevention alarm signal k is sent to the center, the security guarantee agency is contacted and crime prevention measures are taken.

In this manner, when gas or the like is not used for a long time, by switching the changeover switch 8 to set the security mode, it is possible to provide a crime prevention function and prevent errors in detecting abnormalities in the meter reading meter 1.

In the above description, the changeover switch 8a is switched to the crime prevention mode when the user is away for a long time, but it can also be used for crime prevention if the switch 8a is set to the crime prevention mode even when the person is at home, such as when sleeping, and when gas or the like is not being used.

Further, in the above example, the abnormality determination section 5a, the AND circuit 13, etc. can be replaced with software using a microprocessor and memory.

〔Effect of the invention〕

As explained above, according to the present invention, ■It is possible to prevent errors in detecting meter reading errors.

■Can be useful for crime prevention.

There is an effect.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram illustrating a conventional method. In the figure, 1 is a meter reading meter, 2 is an in-home device, 3 is a pulse input section, 4 is a pulse integration section, 5 and 5a are appropriateness determination sections,
6 and 6a are timers, 7 and 7a are transmitting sections, 8 is a changeover switch, 9 is a switch input section, 10 is a detection signal input section, 1
1 is an alarm output section, 12 is a notification section, 13 is an AND circuit, and SL does not indicate a sensor.

Claims (3)

[Claims] (1) In an automatic meter reading system that measures the consumption of a meter to be read by integrating the pulses emitted by the meter reading meter and transmits the result to a center via a line, a detection means for detecting an abnormality in the meter reading meter, and the detection means 1. A meter reading meter abnormality detection method, comprising: a prohibition instruction means for prohibiting detection of the meter, and the detection means performs detection by the detection means only when the prohibition by the prohibition instruction means is canceled. (2) The detection means includes a timer that starts when a predetermined time is set and no pulse is emitted from the meter reading meter, and a determining means that determines whether there is an abnormality in the meter reading meter when the timer counts the predetermined time. A meter reading meter abnormality detection method according to claim 1, characterized in that: (3) in an automatic meter reading system that measures the usage of a meter to be read by integrating pulses emitted by the meter reading meter, and transmits the metered amount to a center via a line, a first detection means for detecting an abnormality in the meter reading meter; a second detection means for detecting that a closed opening/closing section is opened; and a switching instruction means for instructing switching between the first detection means and the second detection means; When the first detection means is specified, the detection by the second detection means is prohibited, and when the second detection means is specified, the detection by the first detection means is prohibited. A meter reading meter abnormality detection method.