JP2001338362A - Automatic fire alarm receiver provided with auxiliary power test function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic fire alarm receiver capable of automatically performing an auxiliary power test. SOLUTION: This automatic fire alarm receiver provided with a charging battery as an auxiliary power is provided with a charging circuit for charging the charging battery, automatically and periodically stops the operation of the charging circuit and performs a test on the basis of the voltage level of the charging battery. The self-fire alarm receiver is provided with an automatic test function for the auxiliary power.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-fire alarm receiver having a function of testing a rechargeable battery serving as a standby power supply.

[0002]

2. Description of the Related Art In buildings and condominiums, a self-fire alarm system (automatic fire alarm system) has been introduced. A self-fire alarm receiver is installed in a disaster prevention center, a security center, a manager's office, etc. Fire detectors are installed in buildings, dwellings, corridors, etc. to monitor the occurrence of fires. In the self-fire alarm receiver, when a fire detector emits an alarm, a fire display and an alarm sound are output, so that a guard or a manager can take prompt action. In addition, the self-fire alarm receiver works in conjunction with an acoustic device or smoke elimination device registered in advance corresponding to the fire detector to prevent the damage caused by the fire from spreading.

[0003] Some of such self-fire alarm receivers include a standby power supply composed of a rechargeable battery, so that even if a power failure or the like occurs, monitoring of the fire can be continued. The standby power supply is not used during normal monitoring, but needs to be checked periodically to prepare for an emergency such as a power failure.

[0004]

However, in order to test the standby power supply, the conventional self-fire alarm receiver once switches the power supply to the standby power supply by a predetermined switch operation, etc. It was necessary to stop the operation of the charging circuit performing the charging and check the operation.

[0005] In addition, even if an abnormality in the voltage level of the rechargeable battery can be detected, the disconnection of the battery or the short circuit of the battery is not detected separately, so that when the abnormality is detected, the cause cannot be easily determined. there were. Furthermore, at the time of normal fire monitoring, the charging current is not monitored to detect the abnormality of the battery, so that the abnormality of the battery may not be detected early.

The present invention has been made in view of such circumstances, and has as its object to provide a self-fire alarm receiver that can automatically perform a test of a standby power supply.

[0007]

In order to achieve the above-mentioned object, a self-fire alarm receiver according to the present invention is provided with a rechargeable battery as a backup power source so that a test of the backup power source can be automatically performed. I have. According to the first aspect, a charging circuit for charging the rechargeable battery is provided, and the operation of the charging circuit is periodically stopped, and the test is performed based on the voltage level of the rechargeable battery.

According to a second aspect of the present invention, when the voltage level of the rechargeable battery is out of the range of the normal level only when the operation of the charging circuit is stopped, it is determined that the battery is not connected. According to the third aspect, when the voltage level of the rechargeable battery is out of the range of the normal level, the battery is determined to be short-circuited regardless of whether the charging circuit is operating or stopped. According to the fourth aspect, only when the operation of the charging circuit is stopped, when the voltage level of the rechargeable battery is within the range of the normal level but lower than a predetermined level, it is determined that the battery voltage is abnormal.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, there is provided a notifying means for notifying a test result of the standby power supply, and an operating means for setting a notifying method by the notifying means. According to a sixth aspect of the present invention, in any one of the first to fifth aspects, an operation unit for setting a time interval for periodically stopping the operation of the charging circuit is provided. According to a seventh aspect, in the fourth aspect, there is provided an operating means for setting a predetermined level serving as a reference for determining that the battery voltage is abnormal.

[0010] In claim 8, in claim 1, the current value of the charging circuit is detected, and the charging time by the charging circuit has reached the charging completion time calculated based on the capacity of the charging battery. At this time, if the current value of the charging circuit exceeds a predetermined value, it is determined that the battery is abnormal, and the operation of the charging circuit is stopped.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an example of the internal configuration of the self-fire alarm receiver. The self-fire alarm receiver A is provided with a rechargeable battery 7 as a backup power source, so that an operation test using the battery 7 can be automatically performed.

In FIG. 1, reference numeral 1 denotes a CPU and the like.
An information processing circuit unit that controls each unit. A fire signal receiving unit 2 receives a fire signal transmitted from the fire sensor by connecting a fire sensor and a housing information panel of each dwelling unit to which the fire sensor is connected. Reference numeral 3 denotes a switch operation unit having various switches, and reference numeral 4 denotes a display / printing unit which performs display by a liquid crystal display, a CRT, various display lamps, and the like, and prints out on recording paper.

The self-fire alarm receiver A includes a power supply circuit section 5 for supplying power to each section, a battery charging circuit section 6, and a rechargeable battery 7 charged by the battery charging circuit section 6. Battery voltage detection circuit section 8 for detecting the voltage value of battery 7
And a charging current detection circuit section 9 for detecting a receiving current of the battery charging circuit section 6.

The information processing circuit section 1 has a storage section 1a, a time management section 1b, an A / D for digitally converting a voltage value from the battery voltage detection circuit section 8 and a current value from the charging current detection circuit 9. And an input unit 1c.

The self-fire alarm receiver A is operated by the power supplied from the power supply circuit unit 5 during normal monitoring,
At the same time, the battery 7 is charged by the battery charging circuit unit 6. In the present invention, the operation of the battery charging circuit unit 6 is periodically stopped, and the test is performed based on the voltage level of the charging battery 7. Is implemented. As a result, the test of the battery 7 serving as the backup power supply can be automatically and periodically performed, and the operation with the backup power supply can be confirmed.

More specifically, the information processing circuit unit 1 periodically executes, for example, three times based on the time managed by the time management unit 1b.
A charge stop signal, which is a pulse signal for 3 seconds, is output at a rate of once every 0 seconds. Alternatively, a charge stop signal is output based on the time constant of the circuit. Then, the battery charging circuit unit 6
The charging of the battery 7 is stopped for a predetermined time, and during that time, the battery voltage detection circuit 8 detects the voltage. For example, through a comparator or by dividing the voltage below 5V,
The voltage is taken into the information processing circuit unit 1 and the voltage level is determined.

Only when the operation of the battery charging circuit 6 is stopped, when the voltage level of the charging battery 7 is out of the range of the normal level, it is determined that the battery is not connected. If the voltage level of the rechargeable battery 7 is out of the range of the normal level in both the operation of the battery charging circuit 6 and the stop of the operation, it is determined that the battery is short-circuited. Further, only when the operation of the battery charging circuit unit 6 is stopped, when the voltage level of the charging battery 7 is within the range of the normal level but lower than a predetermined level, it is determined that the battery voltage is abnormal. .

Thus, the self-fire alarm receiver A can detect the battery abnormality with a simple circuit configuration in the test of the rechargeable battery 7 while distinguishing the battery abnormality from the battery non-connection, the battery short-circuit, and the battery voltage abnormality. In particular, in the case of a short circuit, urgency is required, and prompt measures can be taken.

FIG. 2 shows an example of the operation of the self-fire alarm receiver A (100 to 109). During normal fire monitoring, the battery charging circuit 6 charges the battery 7 (100), but the information processing circuit 1 determines that the voltage level of the battery 7 is outside the normal level in this charged state, for example, 1V
When an abnormal signal is received below (or 4 V or more), it is determined that the battery is short-circuited (101, 109).

At the time of the periodic test, the charging is stopped (102, 103), but the information processing circuit unit 1 does not receive an abnormal signal in the charging state. If the voltage level falls outside the normal level range, for example, 1 V or less (or 4 V or more) and an abnormal signal is received, it is determined that the battery is not connected (104, 104).
108).

The information processing circuit unit 1 receives an input from the A / D input unit 1c or a voltage detection output of a plurality of stages by a comparator, and sets the voltage level to a predetermined level only when the charging is stopped. If it is determined that the battery voltage is lower than the battery voltage, it is determined that the battery voltage is abnormal (10).
5, 107).

If no battery short-circuit, no battery connection, or abnormal battery voltage is detected, the battery 7 is normal (106), the battery test ends, and the battery returns to a normal state of charge (100). .

The self-fire alarm receiver A includes a battery 7 serving as a standby power supply.
Is notified by the notification means. In the configuration of FIG. 1, the self-fire alarm receiver A is provided with the display / printing unit 4 as the notification means. That is, the self-fire alarm receiver A uses the display / printing unit 4 to output test results such as battery short-circuit, battery disconnection, battery voltage abnormality, and battery normal.
Along with the test time, it is displayed on the screen or printed on recording paper. Further, the test result notifying means may include an output means such as a voice message or a signal sound.

As a method of reporting the test results, a battery short-circuit, battery non-connection, and battery voltage abnormality may be collectively performed as “battery abnormality”. It may be performed separately from the voltage abnormality, or may be performed separately. Such a notification method (notification means, notification content, and the like) by the notification means can be set in advance by operating the switch operation unit 3 as the operation means. As a result, it is possible to obtain a battery test result that conforms to the user of each self-fire alarm system and the standards of each country (for example, Japanese fire standards and Chinese standards).

The switch operation section 3 can set a test time interval for periodically stopping the operation of the battery charging circuit section 6, that is, a test cycle of the battery 7. The set time is managed by the time management unit 1b of the information processing circuit unit 1. When the set time elapses from the charging state, the charging stop state is automatically set to start the battery test. Move to The time interval at this time can be set from a plurality of stages by the switch operation unit 3. As a result, the battery test can be performed according to the user of each self-fire alarm system or the standard of each country.

If the test execution interval is made longer, the ratio of the charging stop time becomes smaller, and the time until the charging of the battery 7 is completed can be shortened. On the other hand, if the test execution interval is shortened, the period in which the abnormality can be detected is shortened, so that the abnormality can be detected in more real time.

The switch operation unit 3 can set the time during which the operation of the battery charging circuit unit 6 is stopped, that is, the time during which the battery 7 is tested. The set time is managed by the time management unit 1b of the information processing circuit unit 1. When the set time elapses after the charging is stopped, the battery test is automatically terminated and the charging state is set. Return. During the test, a pulse signal is output as a charge stop signal, and the output period of the signal at this time can be set from a plurality of stages by the switch operation unit 3.

Further, in the switch operation section 3, a predetermined voltage level serving as a reference for determining that the battery voltage is abnormal can be set in the storage section 1a. In this case, an arbitrary voltage level may be selected from a plurality of voltage values. As a result, a battery test that matches the user of each self-fire alarm system, the standard of each country, and the characteristics of the battery can be performed.

Next, a test method of another battery 7 of the self-fire alarm receiver A will be described. In addition to performing the test after stopping charging, the self-fire alarm receiver A can perform a test even during charging in addition to the test.

The information processing circuit section 1 detects a charging current detected by the charging current detecting circuit section 9 when the charging time of the battery charging circuit section 6 reaches the charging completion time calculated based on the capacity of the rechargeable battery 7. If the current value exceeds the predetermined value, it is determined that the battery is abnormal, and the operation of the battery charging circuit unit 6 is stopped. In this way, by monitoring the charging current and detecting the abnormality of the battery, the abnormality of the battery can be detected earlier than before the charging is stopped and the test is performed.

The battery charging circuit section 6 has a very small resistance. The charging current detecting circuit section 9 amplifies the voltage between the resistors to detect the charging current.
/ D input section 1c. In the information processing circuit unit 1,
The charging current is constantly monitored, and if the charging current remains above a predetermined level, it is determined that the battery is abnormal.

FIG. 3 shows the operation at that time (200 to 205). In the charging state, which is a normal fire monitoring state (200), when the estimated charging completion time has elapsed (201) and the charging current value has exceeded a predetermined value (202), it is determined that the battery is abnormal. Then, the charging is stopped, and the charging stopped state is maintained until the replacement of the battery 7 is completed (204, 205). When the charging current value is equal to or less than the predetermined value, it is determined that the battery 7 is normal (203). Thus, in the case where the battery 7 is a lead battery, it is possible to prevent a failure or rupture due to overcharge or the like due to a battery abnormality.

[0033]

As can be understood from the above description, according to the self-fire alarm receiver according to each of the first to eighth aspects of the present invention, an operation test using a rechargeable battery as a standby power source is performed.
It can be implemented automatically and periodically with a simple circuit configuration. In particular, in the second aspect, the battery is not connected, in the third aspect, the battery is short-circuited, and in the fourth aspect, the battery voltage abnormality can be detected. As described above, according to the present invention, the disconnection of the battery, the short-circuit of the battery, and the abnormality of the battery voltage can be distinguished and detected by the test of the rechargeable battery, so that the cause of the abnormality of the battery can be easily understood, and the measure corresponding to each cause can be promptly taken. I can take it.

According to the fifth aspect, a method of reporting the test result of the backup power supply can be set, so that a battery test result that meets the needs of the customer and the standards of each country can be obtained. According to the sixth aspect, the test interval of the standby power supply can be set, so that the battery test can be performed according to the customer's request and the standards of each country. If the test execution interval is made longer, the ratio of the charging stop time becomes smaller, and the time until the charging of the battery is completed can be shortened. On the other hand, if the test execution interval is shortened, it becomes possible to detect the abnormality of the battery in more real time. According to the seventh aspect, the reference voltage level for judging the abnormal battery voltage can be set, so that the battery test can be performed in accordance with the request of the customer, the standard of each country, and the characteristics of the battery.

According to the present invention, when the charging time reaches the charging completion time, if the charging current value exceeds a predetermined value, it is determined that the battery is abnormal, and the charging is stopped. In such a case, it is possible to prevent a failure or the like due to overcharging.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of a configuration of a self-fire alarm receiver according to the present invention.

FIG. 2 is a diagram illustrating an example of the operation of the self-fire alarm receiver of the present invention.

FIG. 3 is a diagram showing another example of the operation of the self-fire alarm receiver of the present invention.

[Explanation of symbols]

 A self-fire alarm receiver 1 information processing circuit section 2 fire signal receiving section 3 switch operation section 4 display / printing section 5 power supply circuit section 6 battery charging circuit section 7 battery 8 battery voltage detection circuit section 9 charging current detection circuit section

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference)

Claims (8)

[Claims] A self-fire alarm receiver including a charging battery as a backup power source, comprising: a charging circuit for charging the charging battery; periodically stopping the operation of the charging circuit; Performing the test based on the voltage level of the rechargeable battery,
Self-fire alarm receiver with test function for backup power supply. 2. Only when the operation of the charging circuit is stopped,
The self-fire alarm receiving function provided with a test function of a standby power supply according to claim 1, wherein when the voltage level of the rechargeable battery is out of the range of the normal level, it is determined that the battery is not connected. Machine. 3. A battery short-circuit is determined when the voltage level of the rechargeable battery is out of the range of the normal level, both during the operation of the charging circuit and during the stoppage of the operation. An automatic fire alarm receiver having a function of testing a standby power supply according to claim 1. 4. Only when the operation of the charging circuit is stopped,
2. The test function of a backup power supply according to claim 1, wherein when the voltage level of the rechargeable battery is within the normal level range but lower than a predetermined level, it is determined that the battery voltage is abnormal. Self-fire alarm receiver equipped with. 5. The apparatus according to claim 1, further comprising: a notifying unit for notifying a test result of the standby power supply, and an operating unit for setting a notifying method by the notifying unit. A self-fire alarm receiver equipped with the test function of the standby power supply described. 6. An operation means for setting a time interval for periodically stopping the operation of the charging circuit.
An automatic fire alarm receiver having the function of testing a standby power supply according to claim 1. 7. An apparatus according to claim 4, further comprising operating means for setting said predetermined level serving as a reference for determining that said battery voltage is abnormal. Fire alarm receiver. 8. A method for detecting a current value of the charging circuit, wherein when the charging time by the charging circuit reaches a charging completion time calculated based on a capacity of the charging battery, the charging is performed. 2. A self-powered self-powered backup power supply according to claim 1, wherein if the current value of the circuit exceeds a predetermined value, it is determined that the battery is abnormal and the operation of the charging circuit is stopped. Fire alarm receiver.