JP6185378B2 - Radio equipment for fire alarm equipment - Google Patents

Description

  The present invention relates to a wireless device for a wireless fire alarm facility.

  2. Description of the Related Art Conventionally, there is a P-type fire alarm facility in which a general-type fire detector that sends a current by an on / off operation to notify a fire is connected to a sensor line extending from a fire receiver. In recent years, wireless fire detectors that do not require wiring so that there is no need to change or add wiring to the sensor circuit due to frequent changes of tenants and room partition changes. Is desired. The fire detected by the wireless fire sensor is relayed by a relay that communicates with the wireless fire sensor connected to the sensor line, causing a fire current to flow through the sensor line, to the fire receiver. Notification is made (see, for example, Patent Document 1).

  In such a fire alarm system using a wireless fire detector, the operator operates the test switch provided in the fire detector during construction and inspection, or the proximity provided in the fire detector. It is confirmed that there is no problem in wireless communication by performing a wireless test communication using a test function by bringing a test device close to a switch (such as a reed switch).

JP 2010-244160 A

  However, in a conventional wireless device test, there are workers and test devices in the vicinity of the wireless device in order to perform the test, and the wireless device is usually installed on a ceiling or the like where such a shield does not exist in the vicinity. As a wireless communication test, it was not appropriate.

The wireless device for fire alarm equipment according to the present invention is a wireless device for fire alarm equipment that transmits and receives information by wireless communication, and an input detection unit that detects an input from the outside, and the input detection unit detects the input A time timer that starts measuring time when the input is continuously detected over a predetermined input confirmation time, and a test that wirelessly transmits a test signal when the time timer measures a predetermined delay time And a transmission unit.

The wireless device for fire alarm equipment according to the present invention includes a test determination unit that measures the radio field intensity of the received test signal, wirelessly transmits a test response signal including information on the radio field intensity of the received test signal, and the test response signal A wireless test that determines the result based on the signal strength of the wireless response signal and the signal strength of the test signal included in the test response signal, and a wireless test that determines the result based on the signal strength of the received test signal. It can be switched .

According to the present invention, since there is a delay time from when a test operation is performed by a test switch operation or the like until a wireless test signal is transmitted, it is possible to move an operator or a test apparatus away from the vicinity of the wireless device during the delay time. And an accurate wireless communication test can be performed.
In addition, since the input confirmation unit prohibits time measurement by the time counting unit until it is determined as input, it is possible to prevent a test execution due to an erroneous operation of the test operation.
Further, since the display is performed when the input detection unit detects an input or when the input confirmation unit determines that the input is confirmed, the operator can check the input state of the test operation.

In addition, the display unit displays when the time counting unit measures a predetermined notice time shorter than the delay time. For this reason, the worker knows that the wireless test communication will be performed soon, and when there is an object that interferes with the wireless communication around the wireless device, perform the appropriate test by performing the wireless test again. be able to.
In addition, because it has a delay time changing unit that changes the delay time, the time to wireless test communication can be changed according to the time of test operation, for example, work at high places used to test wireless devices installed in high places Time can be taken to eliminate things that take time to remove, such as cars.

It is a schematic structure figure showing an example of fire alarm equipment concerning an embodiment of the invention. It is a schematic block diagram which shows an example of the test part of the radio equipment which concerns on embodiment of this invention. It is a flowchart figure which shows an example of the test operation | movement which concerns on embodiment of this invention. It is a figure which shows an example of the test operation | movement which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram illustrating an example of a fire alarm facility according to an embodiment of the present invention.
In the present embodiment, a case where a part of an existing P-type fire alarm facility is a wireless device will be described, but a part of an existing R-type fire alarm facility may be wireless.
Moreover, it is good also as a fire alarm facility by the some fire alarm for houses which interlock | cooperates an alarm using a radio signal.

The fire alarm facility 1 includes a fire receiver 10, a sensor line 20, a wireless fire detector 30 (hereinafter referred to as a fire detector 30), a repeater 40, a repeater 50, and a terminal resistor 60, and a P-type fire alarm facility. A part of is made wireless.
The fire detector 30 is installed in each room or common part of a building and detects a fire. The fire detected by the fire detector 30 is notified to the repeater 50 by wireless communication, and the repeater 50 reduces the line voltage of the sensor line 20 (corresponding to the signal line) to a predetermined voltage by a switching operation. A fire is notified to the fire receiver 10 by increasing the current flowing through the line 20.
The termination resistor 60 is connected to the end of the sensor line 20 and allows a monitoring current to flow through the sensor line 20.

  The repeater 40 is installed between the fire detector 30 and the repeater 50 when the distance between them is long, and transfers wireless communication between the fire detector 30 and the repeater 50. In FIG. 1, the communication between the fire detector 30 and the repeater 50 is transferred by one repeater 40, but the present invention is not limited to this. The repeater 40 is further provided so that the fire detector 30 and the repeater 50 The distance between them can be extended.

Although only a pair of sensor lines 20 extending from the fire receiver is illustrated, a plurality of sensor lines 20 may be extended from the fire receiver.
In addition, although only one fire detector 30 is illustrated, a plurality of fire detectors 30 may be installed.
Alternatively, a general fire detector 61 that turns on when a fire is detected in the sensor line 20 and increases the current of the sensor line 20 to notify the fire may be connected.

(Fire receiver configuration)
The fire receiver 10 includes a line power supply unit 11, a reception resistor 12, a state determination unit 13, and a receiver control unit 14.
The line power supply unit 11 converts an AC voltage supplied from a commercial power supply (not shown) into a DC voltage of, for example, 24 V as a power supply voltage, energizes the sensor line 20, and supplies power to the connected devices.

  The receiving resistor 12 is supplied from the line power supply unit 11 to the sensor line 20, and a current flowing through the common line 21, the repeater 50, the terminating resistor 60, and the line line 22 flows, and a voltage (hereinafter referred to as a receiving voltage) is applied to both ends. And the current is converted into a voltage.

The state determination unit 13 has a fire threshold and a disconnection threshold for determining whether the sensor line 20 is normal, fire, or disconnection. The state determination unit 13 compares the received voltage converted by the reception resistor 12 with each threshold value to determine the state of the sensor line 20, thereby detecting an abnormality in the fire sensor line 20, and the repeater Receive (detect) a fire detection notification (fire signal) from 50. Each threshold has a relationship of disconnection threshold <fire threshold.
When the state determination unit 13 detects a fire signal from the repeater 50, the receiver control unit 14 controls an indicator lamp and a buzzer (not shown) and performs an alarm operation to notify the occurrence of a fire.

(Fire detector configuration)
The fire sensor 30 includes a sensor receiver 31, a sensor transmitter 32, a fire detector 33, and a test unit 34.
The sensor receiver 31 receives a radio signal, and the sensor transmitter 32 transmits a radio signal.
The fire detection unit 33 detects a fire based on the amount of smoke or heat by a sensor.
The test unit 34 performs wireless test communication, and details will be described later.

(Repeater configuration)
The repeater 40 includes a repeater receiving unit 41, a repeater transmitting unit 42, and a testing unit 43.
The repeater receiving unit 42 receives a radio signal, and the repeater transmitting unit 42 transmits a radio signal.
The test unit 43 performs the same operation as the test unit 34 of the fire detector 30, and details will be described later.

(Configuration of repeater)
The repeater 50 includes a monitoring unit 51, a repeater transmission unit 52, a repeater reception unit 53, a fire output unit 54, and a test unit 55.
The monitoring unit 51 transmits a status transmission command from the repeater transmission unit 52 to the fire detector 30 and the repeater 40 at a predetermined time interval (for example, 12 hours), and collects status information of the fire detector 30 and the repeater 40. Yes. When the collected state information includes abnormality information, the abnormality is notified by a display unit (not shown). Furthermore, the monitoring unit 51 monitors the fire signal transmitted from the fire detector 30 and notifies the fire output unit 54 of the detection of the fire when detecting the fire signal.

The repeater transmitter 52 transmits a radio signal, and the repeater receiver 53 receives a radio signal.
When the fire detection is notified from the monitoring unit 51, the fire output unit 54 reduces the impedance between the common line 21 and the line line 22, causes a fire current to flow through the sensor line 20, and notifies the fire receiver 10 of the fire. To do.
The test unit 55 performs the same operation as the test unit 34 of the fire detector 30 and will be described in detail later.

(Configuration of test section)
Next, the test unit 100 that is the test units 34, 43, and 55 of the fire detector 30, the repeater 40, and the repeater 50 will be described with reference to FIG.
The test unit 100 detects the operator's operation and executes wireless test communication for testing the wireless communication of each wireless device.
The test unit 100 includes a switch 101, an input detection unit 102, a time measuring unit 103, an input confirmation unit 104, a test transmission unit 105, a test determination unit 106, a delay time change unit 107, and a display unit 108.

The switch 101 is operated by an operator when performing wireless test communication, and is a proximity switch such as a push button switch that receives an input from the outside or a reed switch that is turned on when a magnet is brought close thereto.
The input detection unit 102 detects the state of the switch 101 that is an input from the outside.
The time measuring unit 103 starts measuring time when the input detecting unit 102 detects the ON state of the switch 101.
Even when the input detection unit 102 detects that the switch 101 is turned ON, such as when an object hits the switch 101 by mistake, the input determination unit 104 prohibits the time counting by the time counting unit 103 and causes a malfunction of the test. prevent. The input confirmation unit 104 determines that the input is confirmed when the input detection unit 102 detects that the switch 101 is turned on continuously for a predetermined input confirmation time (for example, 1 second), and permits the time counting unit 103 to measure the time. To do.

When the time counting unit 103 times a predetermined delay time (for example, 20 seconds), the test transmission unit 105 controls the transmission unit to transmit a wireless test signal as wireless test communication. The test transmission unit 105 controls the sensor transmission unit 32 if it is the test unit 34, controls the repeater transmission unit 42 if it is the test unit 43, and controls the repeater transmission unit 52 if it is the test unit 55. I do.
The test determination unit 106 measures the radio wave intensity of the wireless test signal received by the reception unit and determines the radio wave state. The test determination unit 106 determines the reception signal of the sensor receiver 31 if the wireless test signal is the test unit 34, and determines the reception signal of the repeater reception unit 41 if the test unit 43. For example, the reception signal of the repeater receiving unit 53 is determined.

  The delay time changing unit 107 measures the time during which the input detection unit 102 detects that the switch 101 is turned on, that is, if the switch 101 is a push button, measures the length of the button being pressed. Accordingly, the delay time from when the time counting unit 103 starts timing to when the test transmission unit 105 transmits the wireless test signal is changed. The delay time changing unit 107 changes the delay time from 20 seconds to 30 seconds, for example, when the switch 101 is pressed for 2 seconds, and changes the delay time to 40 seconds when the switch 101 is pressed for 3 seconds.

  The display unit 108 displays the state of the test unit 100 and displays the result of the wireless test communication. The display unit 108 can be any display device such as an LED, a 7-segment display, and an LCD display. In this embodiment, the display unit 108 is an LED display.

(Normal operation of fire alarm equipment)
Next, operation | movement of the fire alarm equipment 1 at the normal time is demonstrated.
The repeater 50 performs a state collection operation for each wireless device every predetermined time, and transmits a state information collection command. When the repeater 40 receives the status information collection command, the repeater 40 transfers it to the fire detector 30. When the fire detector 30 receives the state information collection command, the fire detector 30 returns to the repeater 40 detector state information that is the state of the fire detection unit 33 or a battery (not shown). The repeater 40 adds its own repeater state information to the received sensor state information and returns it to the repeater 50.
The state information collecting operation by the repeater 50 is performed about once every 12 hours in order to suppress the battery consumption of each device.

(Operation of fire alarm equipment in case of fire)
Then, the operation | movement at the time of the fire of the fire alarm equipment 1 is demonstrated.
When the fire detector 30 detects a fire, it transmits a fire signal to a higher-level device. When the repeater 40 receives the fire signal, the repeater 40 forwards and transmits the fire signal to the repeater 50. When the repeater 50 receives the fire signal, the repeater 50 notifies the fire receiver 10 of the fire. The fire receiver 10 that has received the notification notifies the fire.

(Wireless test operation)
Next, the operation of the wireless test will be described with reference to FIGS.
First, an operation until a wireless test transmission is performed as a wireless test will be described with reference to FIG.
When the switch 101 is turned on by the operator's operation (S01), the display unit 108 is lit and displayed for a predetermined time (for example, 0.2 seconds) to indicate that the input detection unit 102 has detected that the switch 101 is turned on (S02). .

If the switch 101 continues to be turned on for an input confirmation time (for example, 1 second), it is determined that the switch 101 is not erroneously operated, the input confirmation unit 104 determines that the input is confirmed, and the display unit 108 is lit for a predetermined time to indicate that. (S03). When the input confirmation unit 104 determines that the input is confirmed, the time counting unit 103 starts measuring time (S04).
The delay time changing unit 107 measures the time during which the switch 101 is pressed, turns on the display unit 108 at a predetermined time interval (for example, 1 second) (S05-1 to S05-n), and turns on the display unit 108. The length of the delay time (S06) is changed every time it is performed.

When the time counting unit 103 measures the advance notice time (for example, 2 seconds before the end of the delay time), the display unit 108 is turned on to display the advance notice and inform the operator that the wireless test communication will be executed soon (S07). . The notice display does not have to be once, but blinks twice 10 seconds before the end of the delay time, blinks once for 5 seconds, and lights up for 2 seconds before the delay time ends. The display can be easily understood by the operator.
When the time counting unit 103 times the delay time (S08), the test transmission unit 105 controls the transmission unit to perform wireless test transmission (S09).
Note that the input confirmation unit 104 may be omitted, and the time counting unit 103 may start measuring the time of S04 simultaneously with S01 when the input detection unit 102 detects that the switch 101 is turned on.

Next, the operation of determining the result of wireless test communication as a wireless test will be described with reference to FIG.
In FIG. 4, device A is a wireless device in which the switch 101 is operated by an operator, that is, a wireless device in which a wireless test has been executed, and device B is a wireless device that has received a wireless test signal from device A.
In FIG. 4A, when the device A transmits a wireless test signal, the test unit 100 of the device B measures the radio field intensity of the wireless test signal. Device B returns a wireless test response signal including information on the measured radio field intensity of device A to device A.

  The test unit 100 of the device A measures the radio wave intensity of the radio test response signal, and if both of the radio wave intensity information of the radio test signal (signal transmitted by the device A) are normal, the display unit 108 is displayed. Turn on to inform the operator that the wireless test is normal. When the wireless strength of the wireless test response signal is weak and abnormal, or when the information on the radio wave strength of the wireless test signal is abnormal, the test unit 100 of the device A blinks the display unit 108 to notify the operator that the wireless test is abnormal. To inform. If the wireless test response signal cannot be received even after a predetermined time (for example, 1 minute from the wireless test signal transmission) has elapsed, the test unit 100 of the device A causes the display unit 108 to blink as a wireless test abnormality.

In the description of FIG. 4A, the result is displayed by the device A that has started the wireless test, but the wireless communication is performed by the test unit 100 of the device B that has received the wireless test signal as shown in FIG. 4B. You may make it judge the result of a test. Further, the wireless test shown in FIGS. 4A and 4B may be switched by pressing the switch 101 or another setting switch.
If it is possible to switch, normally the result of the wireless test of (a) can be confirmed with the device that performed the wireless test, and if the result is abnormal, the test is switched to the wireless test of (b) Thus, it is possible to test whether the wireless test signal transmission side is bad or the reception side is bad.

  The repeater 40 may perform a wireless test with the lower repeater 40 or the fire detector 30 after performing a wireless test with the upper repeater 50 or the repeater 40 during the wireless test. A radio test may be performed by specifying an upper level or a lower level.

As described above, according to the embodiment of the present invention, since there is a delay time from when a test operation is performed by a test switch operation or the like until a wireless test signal is transmitted, an operator or a test apparatus is kept away from the vicinity of the wireless device. And an accurate wireless communication test can be performed.
In addition, it is possible to prevent a test execution due to an erroneous operation of the test operation.
In addition, the operator can confirm the input state of the test operation.
In addition, since the worker knows that the wireless test communication will be performed soon, if an object that interferes with the wireless communication exists around the wireless device at that time, perform the appropriate test by performing the wireless test again. be able to.
In addition, since the time until wireless test communication can be changed depending on the time of the test operation, for example, it is possible to eliminate the time required to remove an aerial work vehicle used for testing a wireless device installed at a high place. Can take.

In the present embodiment, the radio wave intensity is measured as a result of the wireless test communication, but it may be determined whether the signal content is broken by noise or the like.
In addition, the dedicated communication is performed as the wireless test communication. However, the state collection operation performed in the normal state may be performed, and the repeater 50 may determine the contents so that the state information includes the radio wave intensity. Then, a fire test signal may be transmitted from the fire detector 30 that has performed the wireless test, and it may be determined that the test is normal if the fire receiver 10 displays a fire.

DESCRIPTION OF SYMBOLS 1 Fire alarm equipment, 10 Fire receiver, 11 Line power supply part, 12 Reception resistance, 13 State determination part, 14 Receiver control part, 20 Sensor line, 21 Common line, 22 Line line, 30 Fire detector, 31 detection Detector receiver, 32 sensor transmitter, 33 fire detector, 34 (100) test unit, 40 repeater, 41 repeater receiver, 42 repeater transmitter, 43 (100) test unit, 50 repeater, 51 monitoring unit, 52 repeater transmitter, 53 repeater receiver, 54 fire output unit, 55 (100) test unit, 60 termination resistor, 61 general fire detector, 101 switch, 102 input detection unit, 103 time counting unit, 104 input confirmation Unit, 105 test transmission unit, 106 test determination unit, 107 delay time change unit, 108 display unit

Claims (2)

A wireless device for a fire alarm facility that transmits and receives information by wireless communication,
An input detection unit for detecting an input from the outside;
A time counting unit that starts measuring time when the input detection unit continuously detects input over a predetermined input confirmation time after detecting the input ;
A radio device for fire alarm equipment, comprising: a test transmission unit that wirelessly transmits a test signal when the time counting unit measures a predetermined delay time. It has a test judgment unit that measures the radio field intensity of the received test signal,
When a test response signal including information on the received signal strength of the test signal is transmitted wirelessly, and the test response signal is received, the result is determined based on the signal strength of the radio response signal and the signal strength of the test signal included in the test response signal. The wireless device for fire alarm equipment according to claim 1, wherein the wireless test can be switched between a wireless test to be performed and a wireless test to determine the result based on the radio field intensity of the received test signal .

Images