JP3593790B2 - Disaster prevention detector, gas leak detector and gas leak monitoring system - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to disaster prevention detectors such as gas leak detectors, and more particularly, to a disaster prevention detector with a sound alarm function that outputs a transfer signal to a transfer receiver and that the disaster prevention detector itself issues an abnormal alarm by voice. About the vessel.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been a disaster prevention detector with an audio alarm function that issues an alarm by sound when an abnormal state is detected. Particularly, among gas leak detectors, those that notify an abnormal alarm by a voice message such as "Is gas leaking?"
[0003]
On the other hand, in multi-family dwellings, disaster prevention systems centered on the housing information panel of each dwelling unit have become widespread, and the housing information panel installed for each dwelling unit has one or more disaster prevention systems installed in that dwelling unit. It is connected to detectors, and performs centralized management of disaster prevention information by receiving a transfer signal from each disaster prevention detector when an abnormality occurs.
When such a home information panel receives a transfer signal, it issues an alarm signal to an alarm monitor panel installed in the manager's office or to a terminal device of an external management company via a telephone line. In addition to sending the notification, the occurrence of an abnormality is notified by voice or display.
[0004]
Similar systems that perform centralized management using a transfer receiver corresponding to a housing information panel have become widespread in detached houses that are not multi-family houses, and also in various structures other than for residential purposes.
[0005]
[Problems to be solved by the invention]
As described above, such a house information panel generally issues an abnormal alarm by voice when receiving a transfer signal from each disaster prevention detector. However, the disaster prevention detector with the voice alarm function outputs a notification signal, and the disaster prevention detector itself also issues an abnormal alarm by a voice message.
[0006]
Therefore, since a message is simultaneously issued from both the house information panel and the disaster prevention detector, when both are installed near each other, it may be difficult to hear the contents. In particular, since the house information panel and each disaster prevention detector are installed in the same dwelling unit, such a problem is likely to occur.
As means for solving such a problem, it is conceivable to provide a sound output control circuit including a switching means in the disaster prevention detector, and turn on or off the sound alarm function as necessary by operating the switching means. . According to such a method, it is possible to prevent an abnormal alarm by voice from being issued at the same time. However, such setting at the time of construction is complicated, and the workability of the construction work is reduced.
[0007]
Further, there is a possibility that setting may be forgotten or an incorrect setting may be performed, and such a problem cannot be ignored due to the nature of the disaster prevention detector. That is, such a problem is less likely to be discovered than operating only in an emergency, and high reliability is required for an emergency operation involving human life.
The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a disaster prevention sensor that prevents both a disaster prevention detector and a transfer receiver from simultaneously issuing an audio alarm when an abnormality is detected. And
[0008]
[Means for Solving the Problems]
The disaster prevention detector according to the first aspect of the present invention includes an abnormality detection sensor, a transfer output circuit, a voice output circuit, a connection determination unit, and a voice output control circuit.
The abnormality detection sensor is means for detecting a specific abnormal state and outputting a detection signal, and includes one or more sensors. Such sensors include gas sensors, smoke sensors, temperature sensors, infrared sensors, and the like. Abnormality detection sensors measure the gas concentration, smoke concentration, temperature change, etc. with these sensors, and based on the measurement results, detect the occurrence of abnormal conditions such as gas leakage, fire, theft, intrusion of others, etc. It is.
[0009]
The transfer output circuit is a circuit that outputs a transfer signal to a transfer output terminal connected to a transfer receiver and a signal line, and the transfer signal outputs an abnormality based on a detection signal from the abnormality detection sensor. Output at the time of detection.
The audio output circuit is a circuit that outputs an abnormal alarm by audio based on a detection signal from the abnormality detection sensor, and can be configured by a voice synthesis circuit, an amplifier circuit, a speaker, and the like.
[0010]
The connection determining means is a circuit for determining whether or not the broadcast output terminal and the broadcast receiver are connected by a signal line, regardless of the determination method. Discrimination by a mechanical method in addition to the electrical method is also included. The audio output control circuit is a circuit that controls the operation of the audio output circuit. For example, the audio output control circuit controls on / off of an alarm output from the audio output circuit, volume of the sound, changes in the content of a message , and the like. When a gas leak is detected when a receiver is connected, an abnormal alarm with sound is output, while when a transfer receiver is not connected, an abnormal alarm with sound is not output even when a gas leak is detected. It is configured to control the output of the abnormal alarm.
[0011]
In this disaster prevention detector, the connection determining means is configured as a circuit for detecting the impedance between the broadcast output terminals to which the broadcast receiver is connected via the signal line. The connection judging means compares the detected impedance with a predetermined threshold value, and when the detected value is lower than the threshold value, the audio output circuit controls the alarm output of the audio output circuit to off.
[0012]
A disaster prevention detector according to a second aspect of the present invention is the disaster prevention detector according to the first aspect, wherein the abnormality detection sensor is configured as a gas leak detection sensor. This gas leak detection sensor measures the concentration of one or more specific gases, compares the measured value with a predetermined threshold, and outputs a detection signal if the measured value is equal to or greater than the threshold. Things.
[0013]
A gas leak monitoring system according to a third aspect of the present invention is configured by connecting the gas leak detector according to the second aspect to a house information panel. Both the disaster prevention detector and the house information panel are installed in the same dwelling unit, and when a gas leak is detected, only the house information panel issues an audio alert. The disaster prevention detector according to the present invention described in claim 4 includes a head portion and a base portion, and is used by attaching the head portion to a base portion fixed to a ceiling or a wall in advance.
[0014]
The head unit includes an abnormality detection sensor, a transfer output circuit, an audio output circuit, an audio output control circuit, and a base determination unit. The head unit can be attached to two or more base units of different types, and the base determination unit of the head unit determines the type of the attached base unit. Note that the determination method does not matter. Discrimination by an electrical method and a mechanical method is included.
[0015]
The voice output control circuit controls the output of the abnormal alarm by voice based on the determination result. For example, it controls on / off of the alarm output from the audio output circuit, the volume of the sound, the change of the contents of the message, and the like.
Disaster detector according to the invention described in claim 5, can be attached to the same head in two different base. One is a base unit (for connection) for connecting to the broadcast receiver, and the other is a base unit (for non-connection) that is not connected to the broadcast receiver.
[0016]
The base discriminating means is a means for discriminating whether the base unit to which the head unit is attached is for connection or non-connection, and any method may be used.
The voice output control circuit controls on / off of the output of the abnormal alarm by voice based on the determination result. That is, when the attached base unit is for connection, the output of the abnormal alarm by voice is off-controlled, while when the attached base unit is for non-connection, the output of the abnormal alarm by sound is on-controlled. It is configured as a means to perform.
[0017]
The disaster prevention detector according to the present invention described in claim 6 is the disaster prevention detector according to claim 5 , wherein the base unit is a head unit according to a type of connection and non-connection of the transfer receiver. Is provided with a projection on the mounting surface. Further, the head unit is provided with a switching unit as a base discriminating unit at a position operated only by the protrusion when attached to the base unit.
[0018]
Therefore, when the head is attached to the base, the switching means is operated when the projection is provided at a predetermined position on the base, but is not operated when the projection is not provided. The protrusion may be provided only on the base for connection, or may be provided only on the base for non-connection.
[0019]
A disaster prevention detector according to the present invention described in claim 7 is the disaster prevention detector according to any one of claims 4 to 6 , wherein the abnormality detection sensor is configured as a gas leak detection sensor. This gas leak detection sensor measures the concentration of one or more specific gases and outputs a detection signal if the measured value is equal to or more than a predetermined value.
[0020]
The gas leak monitoring system according to the present invention described in claim 8 is configured by connecting the gas leak detector described in claim 7 and a house information panel. Both the disaster prevention detector and the house information panel are installed in the same dwelling unit, and when a gas leak is detected, only the house information panel issues an audio alert.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment according to the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment according to the present invention. FIG. 1 is a diagram showing a configuration example of a main part. FIG. 2 is a diagram showing an example of the external shape of the gas leak detector 1a shown in FIG.
[0022]
The commercial AC power supplied from the outside to the power supply terminal TMp is transformed by the transformer T and supplied to the gas sensor Se and the diode bridge DB. The diode bridge DB performs full-wave rectification on the AC power and outputs the rectified AC power to the DC voltage circuit SR. The DC voltage circuit SR is configured by a switching regulator and the like, smoothes and stabilizes a power supply voltage, and supplies DC power to each circuit.
[0023]
An AC power supply is always supplied to the gas sensor Se, and the detection circuit De detects the gas concentration based on the output signal, and inputs the gas concentration to the microcomputer C. The microcomputer C compares the gas concentration with a predetermined value, and determines whether the gas concentration has exceeded the predetermined value. That is, the gas sensor Se, the detection circuit De, and the microcomputer C play a role as a gas leak detection sensor.
[0024]
The control signal from the microcomputer C is input to each of the audio output circuit BG, the display circuit Di, and the transfer output circuit SG, and these circuits operate when a gas leak is detected. The sound output circuit BG is a circuit that generates a sound signal of a message indicating the gas leak when a gas leak occurs, amplifies the sound signal, and outputs the amplified sound signal from the speaker Sp. The display circuit Di is a circuit that turns on and blinks a display means such as an LED when a gas leak is detected to notify the gas leak. The transfer output circuit SG is a circuit that outputs a transfer signal from the transfer output terminal TMo when a gas leak is detected.
[0025]
Normally, 6 V is applied between the transfer output terminals TMo, and the output of the transfer signal is performed by applying 12 V between the terminals TMo. A housing information panel can be connected to the transfer output terminal TMo via a signal line, and the housing information panel can receive a transfer signal via the signal line to know the occurrence of gas leakage. it can.
[0026]
The connection discrimination circuit CD is a connection discrimination circuit for discriminating the presence or absence of connection of the house information panel, and performs discrimination by detecting a current flowing to the transfer output terminal TMo in a normal state (when 6 V is applied).
That is, when the home information panel is not connected, the impedance between the transfer output terminals TMo is infinite, and no current flows through the transfer output terminal TMo. However, when the home information panel is connected, the impedance between the transfer output terminals TMo is the sum of the input impedance of the home information panel and the impedance due to wiring. If this value is about 10 kΩ, a current of about 600 μA normally flows. In addition, since 12 V is applied at the time of gas leak detection, a larger current of about 1.2 mA flows.
[0027]
For this reason, if an appropriate threshold value of less than 600 μA is determined in advance and the current value flowing to the transfer output terminal TMo is compared with this threshold value, it is possible to determine whether or not the house information panel is connected. it can. Based on this determination result, the current flowing through the relay drive coil Ryc is controlled, and the opening and closing of the relay contact Rys is controlled.
One end of the relay drive coil Ryc is connected to the DC power supply, and the other end is connected to the connection determination circuit CD, and is driven and controlled by the connection determination circuit CD. The relay contact Rys is provided in a power supply line to the audio output circuit BG, and turns on / off the power supply to the audio output circuit BG.
[0028]
In this way, based on the determination result of the connection determination circuit CD, when the house information panel is not connected, the relay contact Rys is closed, power is supplied to the audio output circuit BG, and if gas leakage is detected, the speaker is turned off. An abnormal alarm by voice is output from Sp. On the other hand, when the home information panel is connected, the relay contact Rys is opened, the power supply to the audio output circuit BG is cut off, and even if a gas leak is detected, no abnormal alarm is output by sound.
[0029]
These circuits are provided in the head portion Hd, and are used by being attached to a base portion Ba fixed in advance to a ceiling, a wall, or the like. A power supply terminal TMp and a transfer output terminal TMo are provided protrudingly on the head portion Hd, while a power supply connector CNp fitted with and electrically connected to the power supply terminal TMp is provided on the base portion Ba. A transfer connector CNo that is fitted with the transfer output terminal TMo and is electrically connected is provided.
[0030]
When attaching the head Hd to the base Ba, the power supply terminal TMp of the head Hd is inserted into the power connector CNp of the base Ba, and the transfer output terminal TMo of the head Hd is connected to the base Ba. The head Hd is fixed to the base Ba by being inserted into the transfer connector CNo and rotating the head Hd.
[0031]
The transfer connector CNo of the base Ba is connected to the house information panel as needed, but the power connector CNp of the base Ba is always connected to a commercial AC power supply. 3 and 4 show a second embodiment according to the present invention. FIG. 3 is a diagram illustrating a configuration example of a main part. FIG. 4 is a diagram showing an example of the external shape of the gas leak detector shown in FIG.
[0032]
The gas leak detector 1b shown in FIG. 3 includes a switch circuit SW as base determining means instead of the relay contact Rys in FIG. 1, and is configured without the connection determining circuit CD and the relay driving coil Ryc. The head portion Hd ′ shown in FIG. 4 is obtained by providing the head portion Hd shown in FIG. 2 with a guide groove Rt for inserting the projection Pi of the base portion Ba ′, and the base portion Ba ′. Is provided on the base portion Ba shown in FIG. 2 with a projection Pi for identifying the type as required. The other components in FIGS. 3 and 4 are the same as those shown in FIG. 1 or 2, and the same components are denoted by the same reference numerals and description thereof will be omitted.
[0033]
In this embodiment, the presence or absence of the protrusion Pi shown in FIG. 4 indicates the type of connection to or not to the house information panel, and the transfer connector CNo is connected to the house information panel. Only the base portion Ba has the projection Pi.
FIG. 5 shows a state in which the head portion Hd ′ is attached to such a base portion Ba ′. This figure is a view of the gas leak detector viewed from the viewpoint of the arrow in FIG. An operation portion of the switch circuit SW is provided at one end of the guide groove Rt, and when the head portion Hd ′ is attached, the protrusion Pi is inserted into the guide groove Rt, and when the head portion Hd is rotated and fixed, The switch SW is operated by the projection Pi.
[0034]
By this switch operation, the contact between the switch circuits SW is closed, and power is supplied to the audio output circuit BG. Therefore, even if this head portion Hd 'is attached to the base portion where the projection Pi is not provided, the switch SW is not operated and power is not supplied to the audio output circuit BG.
In this manner, the presence or absence of the output of the abnormal alarm by sound can be selected at the time of gas leak detection based on the presence or absence of the projection Pi of the base Ba '. Therefore, if the base Ba' is selected as necessary, It is possible to prevent both the gas leak detector and the house information panel from issuing an audible alarm at the same time.
[0035]
In the first embodiment or the second embodiment, when the sound alarm is turned off, an alarm sound may be output from the gas leak detector instead of the sound alarm. Further, in a gas leak detector that outputs both an audio alarm and an alarm sound, a configuration may be adopted in which only an alarm sound is output when the audio alarm is turned off.
[0036]
【The invention's effect】
The disaster prevention detector according to the first aspect of the present invention detects the presence or absence of connection to a broadcast receiver and automatically controls the output of a voice alarm. That is, the operation at the time of abnormality detection can be made different depending on the system configuration.
In addition, the impedance between the transfer output terminals is detected, and when the impedance is lower than a predetermined value , it is determined that there is a connection to the transfer receiver, and the audio output circuit is turned off. Sometimes, it is possible to prevent the disaster prevention receiver and the broadcast receiver from simultaneously emitting voice messages, thereby making it difficult to hear.
[0037]
Gas leak detector according to the invention described in claim 2 can emit gas leak alarm by voice at the same time the gas leak sensor and Utsuriho receiver during gas leak detection, to prevent the hardly hear.
The gas leak monitoring system according to the third aspect of the present invention prevents the gas leak detector and the housing information panel from simultaneously issuing an audio gas leak alarm in the same dwelling unit at the time of gas leak detection, thereby making it difficult to hear. can do.
[0038]
According to a fourth aspect of the present invention, the disaster prevention detector according to the present invention identifies the type of the base unit and automatically controls the output of the sound alarm. That is, the operation at the time of abnormality detection can be made different depending on the type of the base portion.
In the disaster prevention detector according to the present invention as set forth in claim 5 , the base unit has a type for connection or non-connection to the transmission receiver, and the head unit automatically determines this type and transmits the information. When the connection is to the receiver, the audio output circuit is turned off. For this reason, it is possible to prevent the disaster prevention receiver and the transfer receiver from simultaneously emitting voice messages when an abnormality is detected, thereby making it difficult to hear.
[0039]
Disaster detector according to the invention described in claim 6, the protrusion provided on the base portion in accordance with the type is, by operating the switch means of the head portion, to determine the connection or the type of a non-connection . Therefore, with a simple configuration, it is possible to prevent the disaster prevention receiver and the transfer receiver from simultaneously emitting voice messages when an abnormality is detected, thereby making it difficult to hear.
[0040]
The gas leak detector according to the present invention described in claim 7 can prevent the gas leak sensor and the transfer receiver from simultaneously issuing a sound of a gas leak at the time of gas leak detection, thereby making it difficult to hear.
Gas leak monitoring system according to the present invention described in claim 8, it emits a gas leakage alarm and gas leak detector and housing information panel is voice simultaneously in the same dwelling unit during gas leak detection, prevents hardly hear can do.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration example of a main part of the present invention.
FIG. 2 is a diagram showing an example of an external shape of the gas leak detector shown in FIG.
FIG. 3 is a diagram showing another configuration example of a main part of the present invention.
FIG. 4 is a diagram showing an example of an external shape of the gas leak detector shown in FIG.
FIG. 5 is a diagram showing a state when a head unit is attached to a base unit.
[Explanation of symbols]
1a, 1b: disaster prevention detector, gas leak detector Se, De, C: abnormality detection sensor, gas leak detection sensor BG: voice output circuit SG: transfer output circuit CD: connection Discriminating means Ryc, Rys ... Sound output control circuit TMo ... Transfer output terminal TMp ... Power supply terminals Hd, Hd '... Head section Ba, Ba' ... Base section SW ... Base Judgment means Pi: Projection

Claims (8)

Speech provided with an abnormality detection sensor that detects a specific abnormal state, a traffic output circuit that outputs a traffic signal to a traffic receiver when an abnormality is detected, and a voice output circuit that issues a voice alarm when a fault is detected. A disaster prevention detector with an alarm,
Connection determination means for determining the presence or absence of connection with the broadcast receiver;
A voice output control circuit that controls the output of an abnormal alarm by voice based on the determination result.
The connection determining means is configured as a circuit for detecting the impedance between the broadcast output terminals to which the broadcast receiver is connected via a signal line,
If the impedance between the broadcast output terminals is lower than a predetermined value, it is determined that there is a connection with the broadcast receiver, and the alarm output by the audio output control circuit is turned off. Disaster prevention detector. The disaster prevention detector according to claim 1, wherein the abnormality detection sensor is configured as a gas leak detection sensor that detects that the concentration of one or more specific gases is equal to or higher than a predetermined value. Characterized gas leak detector. A gas leak monitoring system, wherein a signal output terminal of the gas leak detector according to claim 2 is connected to a house information panel installed in the same dwelling unit via a signal line. A head comprising: an abnormality detection sensor for detecting a specific abnormal state; a transmission output circuit for outputting a transmission signal to a transmission receiver when an abnormality is detected; and an audio output circuit for issuing an audio abnormality alarm when an abnormality is detected. In the disaster prevention detector with an audio alarm, the part is attached to the base part fixed in advance,
The head unit comprises: a base determination unit that determines a type of the base unit; and a voice output control circuit that controls output of an abnormal alarm by voice based on the determination result. Detector. In the disaster prevention detector according to claim 4, the type of the head unit is a type for connection or non-connection to the broadcast receiver,
The disaster prevention detector is characterized in that the sound output control circuit is configured as a means for turning off the output of an abnormal alarm by sound when the type of the base unit is for connection to a broadcast receiver. The disaster prevention detector according to claim 5, wherein the base portion has a projection on a mounting surface of the head portion according to a type of connection or non-connection of the transfer receiver,
The disaster prevention detector according to claim 1, wherein the base discriminating means is configured as switching means provided at a position operated only by the protrusion when the head is attached to the base. 7. The disaster prevention detector according to claim 4, wherein the abnormality detection sensor is configured as a gas leak detection sensor that detects that the concentration of one or more specific gases is equal to or higher than a predetermined value. Gas leak detector characterized by being performed. A gas leak monitoring system, wherein a signal output terminal of the gas leak detector according to claim 7 is connected to a house information panel installed in the same dwelling unit via a signal line.

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