Monitoring apparatus for disaster prevention

• US 5,065,150 A
• Filed: 07/14/1989
• Issued: 11/12/1991
• Est. Priority Date: 07/29/1988
• Status: Expired due to Fees

• Current Assignee: Hochiki Kabushiki Kaisha
• Original Assignee: Hochiki Corporation
• Inventors: Shimokawa, Takashi, Machida, Haruchika, Fuwa, Yoshiaki
• Primary Examiner(s): Yusko, Donald J.
• Assistant Examiner(s): Magistre, Dervis
• Application Number:
  US07/380,197
• Time in Patent Office: 851 Days
• Field of Search: 340/825.06, 340/825.07, 340/825.08, 340/825.15, 340/825.16, 340/825.18, 340/825.52, 340/505, 340/506, 340/518, 340/531, 340/539, 365/226, 365/228, 365/195, 365/206
• US Class Current: 340/3.31
• CPC Class Codes: G08B 26/002 only replying the state of the sensor
• CPC Class Codes: G08B 29/24 Self-calibration, e.g. compensating for environmental drift or ageing of components

Abstract

Disclosed is a monitoring apparatus for disaster prevention which allows the setting of relay unit data to be revised with ease by effectively utilizing the information transmitting function between the receiver and the relay units. The monitoring apparatus for disaster prevention comprises relay units equipped with a storage device.

Claims

1. A monitoring apparatus for disaster prevention comprising:

one or a plurality of relay units equipped with a storage means allowing rewriting of data and a control section for monitoring a plurality of terminals with equipment on the basis of data stored in said storage means;

a receiver connected to said relay units over transmission lines and adapted to monitor and control said relay units by transmitting information based on data stored in the storage means of said relay units;

data transfer/writing means for taking relay unit data previously stored in a storage means of said receiver and transferring and writing it to the storage means of said relay units over the transmission lines; and

a data checking means for reading the data written to the storage means of said relay units by said data transfer/writing means and transmitting it through the transmission lines to said receiver and collating to see whether the realy unit data previously stored in the storage means of said means is in accordance with the data written to the storage means of said relay units, whereby when said transferred data from the relay unit is not in accordance with the relay unit data previously stored in a storage means of said receiver, the number of data collating operations performed is counted, and if the number does not exceed a predetermined value, then repeat the transfer/writing procedure for taking the relay unit data previously stored in a storage means of said receiver and transferring and writing it to the storage means of said relay units by said data transfer/writing means; and

a checking procedure by said data checking means are repeated until the number exceeds a predetermined value, and whenever the transferred data is not in accordance with said relay unit data even after repeating said procedure until the number exceeds a predetermined value, a display means located at said receiver indicates any error in the data written to the storage means of said relay units.

2. A monitoring apparatus for disaster prevention as claimed in claim 1, wherein said receiver is equipped with a display means for indicating any error in the data written to the storage means of said relay units whenever said data checking means finds any discordance in the data.

3. A monitoring apparatus for disaster prevention as claimed in claim 1, further comprising a write-inhibiting switch for inhibiting data-writing to the storage means of said relay units.

4. A monitoring apparatus for disaster prevention as claimed in claim 3, wherein said write-inhibiting switch is operated remotely by means of an operation means provided in said receiver.

5. A monitoring apparatus for disaster prevention as claimed in claim 3, wherein said writer-inhibiting switch is operated remotely by means of an operation means provided in said relay unit.

6. A monitoring apparatus for disaster prevention, comprising:

one or a plurality of relay units equipped with a storage means allowing rewriting of data and a control section for monitoring a plurality of terminals with equipment on the basis of data stored in said storage means;

a receiver connected to said relay units over transmission lines and adapted to monitor and control said relay units by transmitting information based on data stored in the storage means of said relay units;

data transfer/writing means for taking relay unit data previously stored in a storage means of said receiver and transferring and writing it to the storage means of said relay units over the transmission lines;

a write-inhibiting switch for inhibiting data writing to the storage means of said relay units which is operated remotely by means of an operating means provided in said relay units;

display means for indicating any error in the data written to the storage means of said relay units whenever said data checking means finds any discordance in the data;

a data checking means for reading the data written to the storage means of said relay units by said data transfer/writing means and transmitting it through the transmission lines to said receiver and collating to see whether the relay unit data previously stored in the storage means of said receiver is in accordance with the data written to the storage means of said relay units;

whereby when said transferred data from the relay unit is not in accordance with the relay unit data previously stored in a storage means of said receiver, the number of data collating operations performed is counted, and if the number does not exceed a predetermined value, then repeat the transfer/writing procedure for taking the relay unit data previously stored in a storage means of said receiver and transferring and writing said data to the storage means of said relay units by said data transfer/writing means; and

a checking procedure by said data checking means is repeated until the number exceeds a predetermined value, and whenever the transferred data is not in accordance with said relay unit data after repeating said procedure until the number exceeds a predetermined value, said display means located at said receiver indicates an error in the data written to the storage means of said relay units.