JPH04276899A - Terminal information processor for telemeter system - Google Patents

Abstract

PURPOSE:To make a terminal information processor for telemeter system possible to deal with mischief or the like and to protect the issuance of an error signal when carrying out maintenance and insopection by installing a switch for detecting and informing a sensor that the cover of the terminal information processor is opend and another switch for resetting the above switch. CONSTITUTION:Inside a terminal information processor 33, a power supply circuit section 34, a signal input/output circuit section 35, a contorl circuit section 36, a detecting circuit section 37, and push switches 21 and 22 for opening and closing said functions are installed in parallel. When the cover of the terminal information processor 33 is forcibly opened, a screw slips off, the push switch 21 is turned off, an information sensor is automatically informed that the cover is opened. When it is necessary to open the cover for maintenance and inspection, a special purpose tool is inserted in an irregular hole prepared on the cover and the push switch 22 is closed to open the cover, thereby being unable to transmit an alarm signal to the information center. Accordingly, operativeness of maintenance and inspection is upgraded and operation by mishief or malice can be protected.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal information processing device installed in a gas consumer's home in a telemeter system using a telephone line, such as a security/automatic meter reading system for city gas or LP gas.

0002

2. Description of the Related Art Telemeter systems are becoming popular in recent years in order to reduce the labor involved in meter reading or metering of gas, electricity, etc.

FIG. 6 is a system diagram showing an example of a gas security/automatic meter reading system. An information processing center 1 of a gas supplier is connected to a gas consumer's house 2 via a telephone line 9. Information processing center 1
is equipped with an information processing device 3, and the gas consumer's home is equipped with a terminal information processing device 4, a gas leak alarm 5, a gas appliance 8, etc. The gas pipe 13 is connected to a gas appliance 8 via a gas cutoff valve 6 and a gas meter 7. The gas leak alarm 5 and the terminal information processing device 4 are connected by the signal line 10, and the gas cutoff valve 6 and the terminal information processing device 4 are connected by the signal line 1.
1, and the gas meter 7 and the terminal information processing device 4 are connected by a signal line 12.

[0004] FIG. 7 is a partially cutaway sectional view showing a main part of an embodiment of a conventional terminal information processing device 4. As shown in FIG. A lid 16 that can be opened and closed is provided at the front lower part of the main body consisting of the front cabinet 14, the rear cabinet 15, etc., and protects the connection parts of the signal lines 10, 11, 12, etc. such as the terminal block 18 inside the main body. Used for maintenance inspection, etc. Terminal block 18 is attached to circuit board 17. The lower part of the lid 16 has a stopper 19 and a screw 20 fixed to the rear cabinet 15.
It is fixed to the rear cabinet 15 by. This terminal information processing device does not have a function to detect and notify that the lid 16 that protects the terminal block 18 that connects signal lines to the gas meter 7, gas cutoff valve 6, etc. has been removed.

The terminal information processing equipment described above has the following drawbacks. (1) If the lid 16 is opened due to mischief or malice,
It is not possible to prevent malfunctions caused by intentionally applying voltage to the terminal block 18 or the like.

(2) In the unlikely event that it malfunctions,
Because it is related to safety such as miscalculation of charges due to telemetering, gas leak detection/reporting, and gas shutoff,
cause great confusion.

(3) If a situation like (2) occurs, the disadvantages such as financial loss and loss of trust to gas suppliers would be immeasurable.

FIG. 8 is a partially cutaway sectional view showing another embodiment of the conventional terminal information processing device with an improved structure shown in FIG. 7, in which a non-lock type push switch 21 is provided inside the main body. , the lid 16 is fixed by a stopper 19 and a screw 20, and the push switch 21 is in the "on" state by the screw 20, and the other configurations are the same as the embodiment shown in FIG.

In the structure shown in FIG. 8, the lid 1 of the terminal information processing equipment
6, it is necessary to remove the screw 20, and once the screw 20 is removed, the non-locking type push switch 2 will open.
1 changes from the "on" state to the "off" state, this change is detected, and the information processing center 1 of the gas supplier is automatically notified.

0010

However, in the structure shown in FIG. 8, there is no function to detect and notify that the lid 16 that protects the signal line connections with the gas meter 7, gas cutoff valve 6, etc. Since it does not have a release function, it has the following disadvantages.

(1) When it is necessary to open the lid 16 for maintenance or inspection, it is necessary to contact the information processing center of the gas supplier in advance each time and take action there.

(2) In the unlikely event that the precautions are forgotten, a warning signal will be transmitted to the information processing center 1 of the gas supplier, causing confusion.

The object of the present invention is to eliminate these drawbacks.

[0014]

[Means for solving the problem] A first switch that activates the function of detecting the opening of the lid of a terminal information processing device and notifying the information processing center, and canceling the function of the first switch when necessary. A second switch was provided.

[0015]

[Operation] For example, when opening the lid for maintenance inspection, etc.
Since the function of the first switch is canceled by the second switch in advance, erroneous information caused by opening the lid will not be transmitted to the information processing center.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an embodiment of a terminal information processing device according to the present invention. 2 to 5 show an embodiment of a terminal information processing device based on the present invention, and FIG.
is a front view with the lid removed, FIG. 3 is a bottom view, FIG. 4 is a partially cutaway cross-sectional view showing the lower half of the terminal information processing device taken along A-A in FIG. 3, and FIG. 5 is B in FIG. -B is a partially cutaway sectional view showing the lower half of the terminal information processing device.

First, the specific structure will be explained as shown in FIGS. 2 to 5. Inside the main body consisting of the front cabinet 14 and the rear cabinet 15, there are a circuit board 17, a terminal block 18, and a stopper 19 fitted to the rear cabinet 15.
, etc. are installed. A lid 16 is provided at the bottom of the front cabinet 14 to protect the signal line connection section. This lid 16 is fixed to the main body by a stopper 19 and a screw 20. When the screw 20 is in the fixed state, it operates the first non-lock type push switch 21 provided inside the main body to turn it on, and at this time the second push switch 21 of the lock type provided inside the main body is turned on. The push switch 22 is in the "off" state. The second push switch 22 is operated by a special tool 32 inserted through a shaped hole 30 provided at the bottom of the lid 16.

In FIG. 1, a terminal information processing device 33 according to the present invention includes a power supply circuit section 34, a signal input/output circuit section 35 connected thereto, a control circuit section 36, a detection circuit section 37, etc. A first push switch 21 and a second push switch 22 are provided in parallel to open and close these functions.

If an attempt is made to open the lid of the terminal information processing device 33 due to mischief or malice, it is necessary to remove the screw 20, and when the screw 20 is removed, the non-locking type first push switch 21 is turned on. This change is detected and automatically reported to the gas supplier's information processing center.

Further, when opening the lid 16 for maintenance and inspection, a special tool 32 is inserted through the irregularly shaped hole 30 provided in the lid 16.
Insert the lock type second push switch 22
If you open the lid 16 after changing the "off" state to the "on" state, the electrical state is the same as if the lid was closed, so an alarm signal is transmitted to the information processing center of the gas supplier. Once the maintenance and inspection are completed, fix the lid 16 with the screw 20, and then use the special tool 32 to turn the lock type second push switch 22 from the "on" state to the "off" state.
You just have to get it back to normal.

The second push switch 22 cannot be operated without using a special tool 32 due to the irregularly shaped hole 30 provided in the lid 16.
The push switch 22 can be prevented from being operated.

[0022]

[Effects of the Invention] As described above, according to the present invention, (1)
If the lid is opened by mischief or malicious intent, the information processing center of the gas supplier is automatically notified, so it can be used to prevent malfunctions caused by intentionally applying voltage to the terminal block, etc.

(2) Therefore, the gas supplier is spared from disadvantages such as confusion, financial loss, and loss of credibility that would occur if the system were to malfunction without any warning.

(3) In addition, when opening the lid during maintenance and inspection, it can be easily done on the terminal information processing equipment side, which improves work efficiency and eliminates the need for special tools. , it can prevent manipulation by mischief or malicious intent.

(4) As a result, the reliability of the gas security/automatic meter reading system increases, leading to a reduction in total cost and improvement in safety.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a front view of one embodiment with a lid removed.

FIG. 3 is a bottom view of the embodiment of FIG. 2;

FIG. 4 is a partially cutaway sectional view taken along line AA in FIG. 3;

FIG. 5 is a partially cutaway sectional view taken along line BB in FIG. 3;

FIG. 6 is a system diagram showing an example of a gas security/automatic meter reading system.

FIG. 7 is a partially cutaway sectional view showing an example of a conventional terminal information processing device.

FIG. 8 is a partially cutaway sectional view of another embodiment of a conventional terminal information processing device.

[Explanation of symbols]

1 Information processing center 9　Telephone line 16 Lid 21 First push switch 22 Second push switch 33 Terminal information processing equipment 34 Power supply circuit section 35 Signal input/output circuit section 36 Control circuit section 37 Detection circuit section

Claims (1)

[Claims] [Claim 1] A main body, a lid that covers the signal line connection part housed inside the main body, means for fixing the lid to the main body, and a function to detect when the fixing means is opened and notify an information processing center. 1. A terminal information processing device for a telemeter system, comprising: a first switch that operates the function of the first switch; and a second switch that operates the function of canceling the function of the first switch when necessary.