JPH0159637B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a data collection device that collects data on usage of water, electricity, gas, and the like.

Conventionally known devices of this type are shown in FIGS. 1, 2, and 3.

The device shown in FIG. 1 is provided with a three-wire pulse transmitter 1 having a transfer contact whose state is changed by a measuring instrument, and the fixed terminals of this pulse transmitter 1 are connected to the fixed terminals of a switching contact 2, respectively. , the moving element of the pulse transmitting device 1 is connected to the moving element of the switching contact 2 via a power source 3 and a motor M. In addition, a count display mechanism 4 is provided which displays the count by the rotation of the output shaft of the motor M, and the movable element of the switching contact 2 is placed on the opposite side of the fixed terminal that was switched before the display mechanism 4 rotated by one count. Connect to fixed terminal. In this way, the pulse transmitter 1 is
When the movable element closes, for example, the upper fixed terminal in FIG. 1, a closed circuit in the upper half including the power source is formed, and the motor M rotates. At this time, the mover of the switching contact 2 is connected to the upper stator. When the motor M rotates by a predetermined amount, that is, one count of the display mechanism 4, the mover of the switching contact 2 moves to the lower fixed terminal,
Since no current flows through the motor M, the motor M stops and one counting operation ends. Next, when the measuring instrument measures a predetermined amount, the movable element of the pulse transmitting device 1 is connected to the lower fixed terminal to form a closed circuit, and the counting display mechanism 4 performs counting by the same operation.

The one shown in FIG. 2 is a step motor type counter that performs the same operation as that in FIG. 1. Also, Figure 3 shows a counter using an IC.
In the figure, reference numeral 5 denotes a waveform shaping circuit for shaping the waveform of the pulses from the pulse transmitting device 1. This shaped pulse is counted by a counter 6, and this count data is displayed on a display section 7.

These conventional counting devices have the following drawbacks.

When the transmitter side makes a step and both contacts become ON, the motor continues to rotate in the circuits shown in Figures 1 and 2, and the metering becomes a positive metering.

If the connecting wire is disconnected, the measured value will be negative.

In the above case as well, the meter reader could not understand the abnormality information and could not determine whether the measured value was correct or not.

The present invention has been made in view of the above-mentioned circumstances, and is equipped with a transmitter abnormal disconnection display function for each measured value, and when an abnormality occurs, the abnormality is notified by these display functions, and the room number display section flicker to make the weighing value display blank, and during automatic calling, the automatic calling is stopped at the room number where the abnormality occurred, and in the case of automatic recording,
To provide a data collection device that prevents erroneous meter reading by recording a mark clearly different from the data indicating that the above-mentioned abnormality has occurred, and clearly informing a meter reader that the measured value is abnormal. The purpose is

An embodiment of the present invention shown in FIG. 4 will be described below. In the figure, 1a, 1b... are 3 having transfer contacts whose states are changed by a measuring instrument.
A wire-type pulse transmitter, 5a, 5b... are waveform shaping circuits for shaping the waveforms of pulses from the pulse transmitters 1a, 1b..., 8a, 8b... are gate circuits,
9a, 9b... are counters for counting pulses whose waveforms have been shaped by the waveform shaping circuits 5a, 5b...;
10a, 10b... are abnormal disconnection memories for storing count data and abnormality information, and 11 is an abnormality in the pulse transmitting devices 1a, 1b..., for example, when one of the reed switches 1a ₁ , 1a ₂ fails to turn off (Fig. 5c). ), 12 is a waveform shaping circuit 5a, 5b, . . . from pulse transmitters 1a, 1b, .
13 is an abnormal disconnection point detection circuit, 14 is a decoder, 15 is an abnormal disconnection memory writing circuit, 16
17 is a multiplexer, 17 is a judgment circuit, 18 is an abnormality indicator lamp, 19 is a disconnection indicator lamp, 20 is a data display register, 21 is a data display device, 22
2 is a meter reading operation switch for manual calling, 23 is an address memory for automatic calling, 24 is an automatic calling step circuit, 25 is a register for address display, 26
is an address display device.

FIG. 5 shows the waveform shaping circuits 5a and 5b shown in FIG. 4 above.
It is a waveform diagram showing the output signal waveform of..., and figure a is,
The pulse transmitters 1a, 1b... are normal, and the pulse transmitters 1a, 1b... and the waveform shaping circuits 5a, 5b.
...The line between them is normal, Figure B shows the case where the above line is connected, and Figure C shows the case where the line is connected to the pulse transmitter 1.
This shows a case where one of the two reed switches a, 1b, . . . is no longer turned off due to a stuck condition or other causes.

FIG. 6 is a logic circuit diagram showing an example of an abnormality detection circuit used in the embodiment shown in FIG. Connected to reed switches 1a ₁ and 1a ₂ , etc., 1a ₁ signal and 1a ₂
It consists of AND gates 11a and 11b that output abnormal signals in response to simultaneous ON of signals, etc.

FIG. 7 is a detailed block diagram showing an example of a disconnection detection circuit used in the embodiment shown in FIG.
Gate ₁ , 12a 1 and gate 2, 12a ₂ connected to a 1 and 1a ₂ , counter ₁ , 12b ₁ , counter 2, connected to the output side of each gate, respectively.
12b ₂ , a comparison detection section 12c, and the like. The gates 1, 12a ₁ and gates _2, 12a ₂ output the 1a ₁ signal pulse when the reed switch 1a 2 is OFF and the 1a ₂ signal pulse when the reed switch 1a ₁ is OFF to the counters 1, 12b ₁ and counter 2, respectively.
12b ₂ , and each count value is constantly compared in the comparison detection unit 12c, and when the difference between the two exceeds a certain value, a disconnection signal is output.

FIG. 8 is a block diagram showing an example of an abnormal disconnection point detection circuit used in the embodiment shown in FIG. 13c is a selector that selects a disconnection signal from the disconnection detection circuit 12 based on the generated address, and 13d is connected to the output sides of the counter 13b and selector 13c to select the selected disconnection signal. This is an AND gate that outputs an address.

FIG. 9 is a block diagram showing an example of a determination circuit used in the embodiment shown in FIG. This is a signal source that outputs lamp lighting signals, flicker signals, and automatic ring stop signals.

Next, the operation will be explained. Pulses from pulse transmitters 1a, 1b, . . . of each terminal are passed through waveform shaping circuits 5a, 5b, . . . and counted by counters 9a, 9b. When an abnormality is detected by the transmitter abnormality detection circuit 11, the disconnection detection circuit 12, etc., the abnormality and disconnection memory writing circuit 15 stores the contents of the abnormality in the abnormality disconnection memory 10 corresponding to the meter with the abnormality. Prior to that, abnormal disconnection point detection circuit 1
3, the address of the meter with the abnormality is detected, and the decoder 14 selects the corresponding meter.
In the case of an abnormal meter, the gate circuit 8 is closed by the signal from the decoder 14, and input pulses to the counter 9 are cut off so that the meter does not count.

Through the above series of operations, when an abnormal transmission disconnection occurs, the contents of the abnormality are stored in the abnormal disconnection memory 10, and input pulses are not counted. In the case of automatic calling, data from the address memory 23 in which the room number (address) is stored in advance is sent to the address display register 25, whereby the room number (address) is displayed. The automatic calling step circuit 24 may sequentially call the meter in a predetermined order starting from the first address, or the decoder 27 may select the meter corresponding to the address and operate the multiplexer 16 to select abnormality information and count data. If there is an abnormality in the selected meter or there is an abnormality in the wire breakage memory 10, the determination circuit 17 makes a judgment, and the abnormality lamp 18 or the wire breakage display lamp 19 blinks, and an address flicker signal is also output to perform the address flicker and read the data. Also leave blank. At the same time, if an abnormal meter is selected during the automatic calling, the automatic calling step circuit 24 is stopped and the automatic calling is stopped.

In the case of individual calling, the address (room number) set by the meter reading operating switch 22, which is a keyboard switch, is set in the address display register 25, and the address is displayed. In the case of individual calling, the multiplexer 16 is operated by the decoder 27 to perform the same operation as described above.

In the above embodiment, a water meter with a transmitting device was described, but a gas meter with a transmitting device or a power meter with a transmitting device may be used, and the same effects as in the above embodiments can be obtained.

As described above, according to the present invention, if there is an abnormality in the meter reading data, the room number flickers and the meter reading data is not displayed, so that the meter reader does not read incorrect meter reading data and reliability is improved. There are effects such as being

[Brief explanation of drawings]

1 to 3 are circuit diagrams showing a conventional data acquisition device, FIG. 4 is a block diagram showing an embodiment of the present invention, and FIG. 5 is a waveform diagram of the output signal of the waveform shaping circuit shown in FIG. 4. , FIG. 6 is a logic circuit diagram showing an example of an abnormality detection circuit, FIG. 7 is a block diagram showing an example of a disconnection detection circuit, FIG. 8 is a block diagram showing an example of an abnormality disconnection point detection circuit, and FIG. FIG. 3 is a block diagram showing an example of a determination circuit. In the figure, 1... Pulse transmitter, 5... Waveform shaping circuit, 11... Transmitter abnormality detection circuit, 12
... Disconnection detection circuit, 17 ... Judgment circuit, 8 ... Gate circuit, 9 ... Counter, 18, 19 ... Display lamp, 21 ... Data display device. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] 1 A counter that counts the output of a pulse transmitter that is provided for each consumer and generates a pulse signal corresponding to a measured value, a measured value display section that displays the counted value of the counter, and a corresponding one that corresponds to the measured value display section. a consumer display section for displaying a consumer who is to be used; and a consumer display section that detects an abnormality in the meter with the transmitting device and an abnormality in the output signal transmission path of the meter with the transmitting device, and in the event of an abnormality, counts the counter and displays the measured value display section A data collection device characterized by comprising: means for blocking and controlling the display of the consumer display unit to reduce points.