JP2023094143A - Emergency telephone - Google Patents

Abstract

To easily perform a remote check reproducing operation when using an emergency telephone.SOLUTION: When a check is started, in an emergency telephone, a hook member is mechanically moved from a position to turn off a switch to a position to turn on the switch, and the emergency telephone is connected to an attendant board via an emergency telephone line. A voice signal obtained by suppressing or removing a component of environmental sound from a voice signal, which is collected and obtained by a transmitter in a state where a voice is outputted from a receiver of the emergency telephone, is recorded. After the recorded voice signal is reproduced by the emergency telephone, the hook member is mechanically moved from the position to turn on the switch to the position to turn off the switch, and the emergency telephone and the emergency telephone line are disconnected. The emergency telephone comprises: a voice guide duct guiding the voice outputted from the receiver during the check to the transmitter; and a voice guide box, which is connected to the voice guide duct and disposed between the voice guide duct and the transmitter, for causing the transmitter to collect the voice from the voice guide duct and environmental sound introduced from the outside during the check.SELECTED DRAWING: Figure 9

Description

The present invention relates to emergency telephones.

2. Description of the Related Art Roads such as expressways are equipped with emergency telephones for contacting road administrators or the like in the event of an emergency such as an accident. Road administrators, etc., who have installed emergency telephones regularly check the emergency telephones so that they can always receive emergency calls.

As one of the technologies related to the inspection of emergency telephones, when the handset is in the on-hook state, i.e., when a call is received from the tester while the user is not using the device under test, the handset is placed in a pseudo off-hook state. , and a telephone under test that connects a line to a tester is known (see Patent Document 1, for example). This type of telephone under test makes it possible for an inspection worker or the like to remotely test the telephone without taking the handset off-hook by quasi-off-hooking the handset.

JP 2013-192069 A

However, in the phone under test described above, the actual state of the handset under test is the on-hook state. Therefore, it is necessary for a worker to pick up the handset for each telephone to check whether or not the on-hook state changes to the off-hook state when the user picks up the handset. Furthermore, checking whether or not the sound emitted (output) from the handset of the handset in the off-hook state is normal, for example, a worker checks the sound emitted from the handset for each telephone. It is necessary to listen and do.

In view of the above circumstances, it is an object of the present invention to provide a technology that enables easy remote inspection that reproduces the operation of using an emergency telephone.

An emergency telephone according to one aspect is an emergency telephone connected to a reception desk via an emergency telephone line, and includes a start command transmitted via a telephone line different from the emergency telephone line to start an inspection. A receiving part for receiving a signal and a hook member for switching on/off of a switch connecting the emergency telephone to the emergency telephone line are mechanically moved between a position to turn the switch off and a position to turn the switch on. and a solenoid that activates the solenoid upon receipt of the start signal to mechanically move the hook member from the position that turns the switch off to the position that turns it on through the emergency telephone line. a first control unit that connects the emergency telephone to the reception desk by means of a first control unit; and an audio signal obtained by collecting sound with a transmitter while outputting voice from the receiver of the emergency telephone connected to the emergency telephone line. a sound recording unit that records an audio signal from which environmental sound components are suppressed or removed, and reproduces the recorded audio signal on the emergency telephone; a second control unit for mechanically moving from said position to said position to be turned off and disconnecting said emergency telephone from said emergency telephone line, and said voice output from said receiver during inspection; a sound conduit leading to said microphone; and said sound from said sound conduit during said inspection connected to said sound conduit and disposed between said sound conduit and said microphone. The emergency telephone further includes a sound guide box for collecting environmental sounds introduced from the outside into the transmitter.

According to the above-described aspect, it is possible to easily perform an inspection that reproduces the operation when using the emergency telephone from a remote location.

1 is a schematic diagram illustrating an example of an emergency telephone system; FIG. 1 is a schematic diagram illustrating a configuration example of an emergency telephone system according to one embodiment; FIG. 1 is a schematic diagram illustrating a circuit configuration example of an emergency telephone according to one embodiment; FIG. FIG. 4 is a schematic diagram illustrating a method for switching on/off of a hook switch of an emergency telephone according to one embodiment; FIG. 4 is a sequence diagram illustrating an inspection method for emergency telephones in the emergency telephone system according to one embodiment; It is a schematic diagram explaining an example of an appearance composition of an emergency telephone concerning one embodiment. FIG. 2 is a schematic diagram illustrating a configuration example of a transmitter in a handset of an emergency telephone; It is a perspective view explaining the structural example of the sound release box in the emergency telephone which concerns on one Embodiment. It is a schematic diagram explaining an example of operation of an emergency telephone concerning one embodiment.

Hereinafter, embodiments of an emergency telephone system and an emergency telephone inspection method according to the present invention will be described in detail with reference to the drawings. In the following description, detailed descriptions of well-known configurations and operations of conventional emergency telephone systems and emergency telephones are omitted.

FIG. 1 is a schematic diagram illustrating an example of an emergency telephone system. FIG. 1 illustrates an emergency telephone system 1 including a plurality of emergency telephones 2 installed on a highway network.

A plurality of emergency telephones 2 in the emergency telephone system 1 are installed, for example, in an area controlled by a control center 3 in a highway network. A plurality of emergency telephones 2 are grouped into a plurality of blocks 4 such that the number of emergency telephones 2 included in one block 4 is equal to or less than a predetermined maximum number (for example, nine). A plurality of emergency telephones 2 included in one block 4 are connected to a line monitoring device (L-SV: Line-Super Visor) 6 via a single emergency telephone line 5 . The track monitoring device 6 is a device for monitoring the emergency telephone line 5, etc., and is installed, for example, in a communication equipment room 7 or the like along a road, near a service area, a parking area, a toll gate, or the like. The emergency telephone line 5 is connected to a reception desk 301 of the control center 3 via a track monitoring device 6 and an automatic exchange facility (PBX: Private (automatic) Branch Exchange) (not shown in FIG. 1). A plurality of emergency telephones 2 included in one block 4 are connected to the emergency telephone line 5 in such a manner that two or more emergency telephones 2 cannot be connected to the reception board 301 at the same time.

The emergency telephone 2 included in the emergency telephone system 1 illustrated in FIG. 1 includes, for example, a telephone body and a handset including a receiver and a transmitter. A hook member for switching the hook switch on and off is attached to the telephone main body so as to be movable with respect to the housing of the telephone main body. The hook member, for example, turns off the hook switch when the handset is placed on the handset receptacle extending outside the telephone body, and turns on the hook switch when the handset is picked up from the handset receptacle. Configured. When the hook switch is turned off, the connection with the reception desk 301 via the emergency telephone line 5 is released (hereinafter referred to as "on-hook state"). When the hook switch is turned on, the state of being connected to the reception desk 301 via the emergency telephone line 5 (hereinafter referred to as "off-hook state") is established, and the staff in the control center 3 turns on the handset 302 connected to the reception desk 301. When taken up, a call between the user of the emergency telephone 2 and the staff in the control center 3 becomes possible.

In this type of emergency telephone system 1, since a plurality of emergency telephones 2 are distributed over a range of several kilometers, it is very inefficient for the staff to go to the installation location of each emergency telephone 2 during inspection. For this reason, in the emergency telephone system 1 according to the present embodiment, each emergency telephone 2 is operated remotely (specifically, from the control center 3) for inspection, as described below.

FIG. 2 is a schematic diagram illustrating a configuration example of an emergency telephone system according to one embodiment. Although only one block 4 of the emergency telephone 2 is shown in the emergency telephone system 1 of FIG. 2, two or more blocks 4 of the emergency telephone 2 may be provided.

The emergency telephone system 1 according to this embodiment includes a reception desk 301 installed in a control center 3 such as a traffic control room, a handset 302, a business telephone 303, a test control device 304, and a first automatic exchange facility (PBX) 305. including. The emergency telephone system 1 also includes a second automatic exchange (PBX) 8, a line monitoring device (L-SV) 6, and a line control device 9 installed in the communication equipment room 7 or the like. Furthermore, the emergency telephone system 1 includes a block 4 containing a plurality of emergency telephones 2 . The emergency telephone system 1 may include other devices not shown in FIG. 2, such as transmission devices (optical transmission equipment) for information transmission and data transmission/reception, such as trunk line transmission devices and local transmission devices.

A reception board 301 installed in the control center 3 receives calls from all the emergency telephones 2 included in the emergency telephone system 1 . The emergency telephone 2 is connected to the reception board 301 via the emergency telephone line 5 , the line monitoring device 6 , the second automatic exchange facility 8 , the first automatic exchange facility 305 and the test control device 304 . The test control device 304 is a device that controls a remote operation test (inspection) of the emergency telephone 2 included in the emergency telephone system 1. For example, the test control device 304 includes a computer and a program that causes the computer to execute the control processing described below. It can be realized by

Reception desk 301 outputs a voice signal (receiving signal) from emergency telephone 2 to the receiver of handset 302 , and outputs a voice signal (transmitting signal) picked up by the transmitter of handset 302 to emergency telephone 2 .

The business telephone 303 communicates with other telephones via a business telephone line different from the emergency telephone line 5. - 特許庁The business telephone 303 is connected to the line control device 9 via the business telephone line 10 via the test control device 304, the first automatic exchange facility 305, the second automatic exchange facility 8, and the line control device 9. A signal instructing the start of inspection can be sent to one or more emergency telephones 2 . The line control device 9 is a device that controls calling of the emergency telephone 2 connected by the business telephone line 10 and connection with the business telephone 303 based on control signals from the business telephone 303 or the test control device 304 . For the business telephone line 10 connecting the line control device 9 and the emergency telephone 2, for example, a backup emergency telephone line can be used. A plurality of emergency telephones 2 included in one block 4 are connected to a line control device 9 via a single business telephone line 10 .

When inspecting (operating test) the emergency telephone 2 in the emergency telephone system 1 of the present embodiment, first, the emergency telephone 2 selected to be inspected is switched from the on-hook state to the off-hook state. This processing is carried out by operating the business telephone 303 by a staff member of the control center 3, for example. The person in charge of the control center 3 operates the business phone 303 to call the line control device 9, and transmits a signal identifying the emergency phone 2 selected as the object of inspection through the business phone line 10. FIG. When the emergency telephone 2 selected as the object of inspection receives the signal from the business telephone 303, it mechanically moves the hook member on which the handset is hung from the on-hook position to the off-hook position. That is, the emergency telephone 2 automatically reproduces substantially the same off-hook state as when the user of the emergency telephone 2 picks up the handset based on the operation from a remote location. A connection with the reception console 301 is established. When the emergency telephone 2 and reception desk 301 are connected via the emergency telephone line 5, the connection between the business telephone 303 and the emergency telephone 2 via the business telephone line 10 is released.

Further, in the emergency telephone system 1 of the present embodiment, when the emergency telephone 2 and the reception desk 301 are connected via the emergency telephone line 5 by the above-described remote operation, the receiver provided on the handset of the emergency telephone 2 A test sound is output. The test voice includes, for example, a voice signal picked up by the handset 302 of the control center 3, or a voice signal output by the reception board 301 or the test control device 304, or the like. Moreover, the test voice includes, for example, an acoustic signal of a predetermined frequency output by an oscillator provided in the emergency telephone 2 . During the period when the emergency telephone 2 outputs the test voice from the handset receiver to the external space of the emergency telephone 2, the voice signal picked up by the handset transmitter is recorded by the recording unit (recorder) provided in the emergency telephone 2. record. When the output of the test voice and the recording by the recording unit are completed, the emergency telephone 2 reproduces the recorded acoustic data and outputs it to the emergency telephone line 5 as reproduced voice. The reproduced voice output to the emergency telephone line 5 is transmitted to the reception desk 301 and the handset 302 via the line monitoring device 6, the second automatic exchange facility 8, the first automatic exchange facility 305, and the test control device 304. be.

The reception desk 301 or the person in charge of the control center 3 confirms whether or not there is an abnormality in the operation of the emergency telephone 2 selected for inspection and the emergency telephone 2 including the emergency telephone line 5 based on the reproduced voice from the emergency telephone 2 and the receiving console 301 is abnormal. After the determination, when the handset 302 of the control center 3 is placed in the on-hook state and the connection between the emergency telephone 2 and the reception desk 301 is released, the emergency telephone 2 mechanically moves the hook member from the off-hook position to the on-hook position. to turn off the hookswitch.

FIG. 3 is a schematic diagram illustrating a circuit configuration example of the emergency telephone 2 according to one embodiment. FIG. 3 shows a circuit configuration example of the first-stage emergency telephone 2 among a plurality of emergency telephones 2 included in one block connected to the line monitoring device 6 via a single emergency telephone line 5. there is

The emergency telephone 2 includes a first PB receiver (PB_REC1) 201 connected to the line control device 9 via the business telephone line 10, a first microcomputer (microcomputer 1) 202, a solenoid 203, a hook switch 204, speech network 205; The first PB receiving section 201 receives the ID number of the emergency telephone 2 transmitted by the business telephone line 10 via the line control device 9 and transfers it to the first microcomputer 202 . The ID number transmitted by the business telephone line 10 is a number that identifies the emergency telephone 2 selected for inspection, and is also transmitted to other emergency telephones 2 after the emergency telephone 2 illustrated in FIG. The first microcomputer 202 compares the ID number transferred from the first PB receiving unit 201 with the ID number assigned to the emergency telephone 2 including the first microcomputer 202 (own machine number 206), This is an example of a first control unit that activates the solenoid 203 when both match. The solenoid 203 is attached to a hook member for switching on and off of the hook switch 204 so that the hook member moves in a direction to turn on the hook switch 204 when the solenoid 203 is activated. The hook member has, for example, a portion on which the handset 207 of the emergency telephone 2 is hung. is attached to the body portion of the emergency telephone 2 so as to move to a position where the is turned on. When the hook switch 204 is turned on, the speech network 205 and the track monitoring device 6 are connected via the emergency telephone line 5 . The speech network 205 outputs an audio signal (received signal) transmitted from the handset 302 or the like of the control center 3 via the track monitoring device 6 or the like to the receiver 208 of the handset 207, and the voice is picked up by the transmitter 209 of the handset 207. The resulting voice signal (transmission signal) is output to the handset 302 or the like of the control center 3 via the line monitoring device 6 or the like. The transmitter 209 of the handset 207 outputs, as a transmission signal, an audio signal obtained by suppressing or removing environmental sound components from an audio signal obtained by picking up sound with a microphone, as will be described later with reference to FIG. do. In the following description, the audio signal output from the transmitter 209, in which the environmental sound component is suppressed or removed, is also referred to as a "transmission signal".

The emergency telephone 2 also includes a second PB receiver (PB_REC2) 210, a second microcomputer (microcomputer 2) 211, a first selector (SE1) 212 and a second selector (SE2) 213, and a 1 amplifier (PGAMP1) 214 and second amplifier (PGAMP2) 215, recorder 216, first to fourth switches 217 to 220, oscillator (OSC) 221, and second PB oscillator (PB_OSC2) 222.

When the solenoid 203 is activated and the hook switch 204 is turned on, the speech network 205 sends the emergency telephone 2 to the reception desk 301 via the emergency telephone line 5 to the second microcomputer 211 via the second PB receiver 210. Notifies you that you are connected. The second microcomputer 211 stops the output of the activation signal from the first microcomputer 202 to the solenoid 203 and outputs the activation signal from the second microcomputer 211 to the solenoid 203 . When the inspection of the emergency telephone 2 is completed, the second microcomputer 211 stops outputting the activation signal to the solenoid 203 and disconnects the emergency telephone 2 and the emergency telephone line 5 . The second microcomputer 211 is an example of a second control unit that stops the solenoid 203 and disconnects the emergency telephone 2 and the emergency telephone line 5 .

The first switch 217 and the second switch 218 switch the transmission path of the audio signal output to the receiver 208 of the handset 207 of the emergency telephone 2 . When the user picks up the handset 207 and the emergency telephone 2 and the reception desk 301 are connected, the first switch 217 and the second switch 218 switch the voice signal (receive signal) received by the speech network 205. The speech network 205 and the receiver 208 are connected so that they are output to the receiver 208 as they are. On the other hand, during inspection (that is, when the emergency telephone 2 and the reception desk 301 are connected by activating the solenoid 203), the first switch 217 and the second switch 218 switch the voice received by the speech network 205. The speech network 205 and the handset 208 are connected such that the signal is output to the handset 208 via the first selector 212 and the first amplifier 214 . First selector 212 switches between the audio signal from speech network 205 input via first switch 217 and the acoustic signal output from oscillator 221 . Oscillator 221 outputs an acoustic signal of a predetermined frequency (eg, 400 Hz). The first amplifier 214 amplifies the audio signal or acoustic signal output from the first selector 212 .

A third switch 219 and a fourth switch 220 switch the transmission path of the transmission signal output by the transmitter (microphone) 209 of the handset 207 of the emergency telephone 2 . When the user picks up the handset 207 and the emergency telephone 2 and the reception desk 301 are connected, the third switch 219 and the fourth switch 220 allow the transmission signal output by the microphone 209 to be used as a speech. A microphone 209 and a speech network 205 are connected for input to the network 205 . On the other hand, during inspection, the third switch 219 and the fourth switch 220 allow the transmission signal output from the transmitter 209 to pass through the recorder 216 , the second amplifier 215 and the second selector 213 to the speech network 205 . The microphone 209 and the speech network 205 are connected so that the input to . The recorder 216 records the transmission signal output from the transmitter 209 and reproduces the recorded transmission signal. The second amplifier 215 amplifies the line loss portion of the transmission signal reproduced by the recorder 216 based on the line loss setting 223 . The second selector 213 switches between the transmission signal input via the second amplifier 215 and the PB signal output by the second PB transmitter 222 . The PB signal output by the second PB transmission unit 222 is a signal that notifies the receiving board 301 of the end of reproduction (end of test) when, for example, the reproduction of the transmission signal recorded by the recorder 216 is completed. .

The emergency telephone 2 also includes a human sensor 224 and a first PB transmitter (PB_OSC1) 225 . The human sensor 224 is a sensor that detects the presence or absence of a person in front of the emergency telephone 2 and is connected to the first microcomputer 202 . During inspection, when the presence of a person in front of the emergency telephone 2 is detected by the human sensor 224, the first microcomputer 202 notifies the second microcomputer 211 of the detection result, and the second microcomputer 211 activates the solenoid 203. is stopped and the hook switch 204 is turned off. When the human detection sensor 224 detects that a person is in front of the emergency telephone 2 when the hook switch 204 is off, the first microcomputer 202 causes the first PB transmission section 225 to output a PB signal. . The PB signal output by the first PB transmission unit 225 is transmitted to another emergency telephone 2 connected to the same emergency telephone line 5 via the business telephone line 10 . The PB signal output by the first PB transmission unit 225 forces inspection of the emergency telephone 2 when there is an emergency telephone 2 under inspection in the same block 4 connected to the same emergency telephone line 5. A signal to terminate. That is, when the emergency telephone 2 under inspection receives a PB signal from another emergency telephone 2 by means of the first PB receiving section 201, the solenoid 203 by the first microcomputer 202 or the second microcomputer 211 is stopped and the hook switch 204 is turned off.

The emergency telephone 2 in the emergency telephone system 1 of this embodiment is connected to the reception desk 301 of the control center 3 via the emergency telephone line 5 when the hook switch 204 is turned on as described above. The on/off of the hook switch 204 of the emergency telephone 2 is switched by changing the position of the hook member movably attached to the housing of the telephone main body as described above.

FIG. 4 is a schematic diagram illustrating a method for switching on and off the hook switch of the emergency telephone according to one embodiment. 4 schematically shows only the hook switch 204, the hook member 250, the handset 207, and the mechanism for moving the hook member 250 in the emergency telephone 2. FIG. The front direction and the back direction shown in FIG. 4 are the directions toward and away from the user in the telephone body (not shown) viewed from the user facing the emergency telephone 2, respectively. Moreover, the upward direction and the downward direction shown in FIG. 4 are respectively the vertically upward direction and the vertically downward direction in the space in which the emergency telephone 2 is installed.

The hook member 250 is rotatable around a rotation axis extending in the horizontal direction (more specifically, in the horizontal direction as seen from the user facing the emergency telephone 2) with respect to the housing (not shown) of the telephone body. is attached to the body of the phone. That is, the hook member 250 illustrated in FIG. 4 can be rotated clockwise and counterclockwise with the shaft 251 as a fulcrum.

The hook member 250 includes a first arm portion 252 extending backward from the shaft 251 , a second arm portion 253 extending downward from the shaft 251 , and a third arm portion 254 extending forward from the shaft 251 . have The first arm portion 252 and the second arm portion 253 are located inside the housing of the telephone body. The third arm portion 254 has a handset receiving portion 255 extending outside the housing.

One end of a spring 256 that biases the hook member 250 clockwise in FIG. 4 is attached to the first arm portion 252 . The spring 256 moves the second arm 253 away from the hook switch 204 due to the load that the third arm 254 receives from the handset 207 when the handset 207 is placed on the third arm 254 . 204 is turned off, and when the handset 207 is picked up, the second arm portion 253 comes into contact with the hook switch 204 and the hook switch 204 is turned on.

A solenoid 203 is attached to the first arm portion 252 to rotate the hook member 250 with the handset 207 hung on the third arm portion 254 clockwise in FIG. The solenoid 203 includes, for example, a coil 261 , a magnetic member 262 , and an attachment member 263 that attaches the magnetic member 262 to the first arm portion 252 . The solenoid 203 is attached, for example, below the first arm portion 252 in such a direction that a magnetic field that moves the magnetic member 262 downward is generated when a current is applied to the coil 261 in a predetermined direction.

In the emergency telephone 2 according to this embodiment, current is not applied to the coil 261 of the solenoid 203 during non-inspection. Therefore, when the emergency telephone 2 is not being inspected and the handset 207 is hung on the third arm portion 254 , the hook member 250 moves the second arm portion 253 away from the hook switch 204 . Then, the hook switch 204 is held at the OFF position (rotational position indicated by the solid line in FIG. 4).

On the other hand, in the emergency telephone 2 according to the present embodiment, the solenoid 203 is activated by applying current to the coil 261 of the solenoid 203 during inspection. At this time, while the handset 207 is hung on the third arm portion 254, the second arm portion 253 contacts the hook switch 204 to turn on the hook switch 204. A current having a magnitude capable of rotationally moving the hook member 250 up to is applied. As a result, the operator can rotate the hook member 250 to turn on the hook switch 204 without picking up the handset 207 . Therefore, the emergency telephone 2 according to the present embodiment can check whether or not it is connected to the reception desk 301 when the handset 207 is picked up, by inputting a signal for activating the solenoid 203 from a remote location. .

In addition, the emergency telephone 2 according to the present embodiment has the recorder 216 as described above, and the voice output from the receiver 208 of the handset 207 during inspection is picked up by the transmitter 209, and the transmitter 209 outputs It is possible to record and reproduce the voice signal (transmitting signal). Therefore, in the emergency telephone system 1 according to the present embodiment, the handset 207 of the emergency telephone 2 and the emergency telephone line 5 connecting the emergency telephone 2 and the reception desk 301 can be inspected by remote operation. . An example of an inspection method for the emergency telephone 2 in the emergency telephone system 1 according to the present embodiment will be described below with reference to FIG.

FIG. 5 is a sequence diagram illustrating an inspection method for emergency telephones in the emergency telephone system according to one embodiment. The inspection work of the emergency telephones 2 illustrated in FIG. state).

When checking the emergency telephone 2 in the emergency telephone system 1 of the present embodiment, first, an extension call is made from the business telephone 303 of the control center 3 to the line control device 9 (step S1). After confirming that a dial tone (DT) can be heard by lifting the handset of the business telephone 303, an inspector such as a staff member of the control center 3 operates the push button of the handset, for example, to enter the extension number of the line control device 9. Dial (call number). When the extension number is dialed, an extension call signal (for example, a 16 Hz call signal) is transmitted from the business telephone 303 to the line control device 9 via the first automatic exchange facility 305, the second automatic exchange facility 8, and the like. , a ring tone (RBT) is output from the receiver of the handset.

When the line control device 9 detects the calling signal from the business telephone 303 several times, it returns a response to the business telephone 303 (step S2) and connects the business telephone 303 to the line control device 9 . At this time, the line control device 9 releases the insulation from the business telephone line 10 connected to the emergency telephone 2 and extends the business telephone line to the emergency telephone 2 side.

After the business telephone 303 and the line control device 9 are connected, the ID number is transmitted from the business telephone 303 to the line control device 9 via the first automatic exchange facility 305 and the second automatic exchange facility 8. The ID number is transferred from the line control device 9 to a plurality of emergency telephones 2 through the business telephone line 10 (step S3). The ID number is a number that identifies the emergency telephone 2 selected for inspection. For example, after confirming that the ringing sound of the handset has stopped, the ID number is input (dial) by operating the push button of the handset. do. After transferring the ID number to the emergency telephone 2, the line control device 9 disconnects the business telephone line 10 after a predetermined period (for example, 3 seconds) has passed (step S4).

Each of the plurality of emergency telephones 2 determines whether or not the ID number transmitted via the business telephone line 10 matches its own ID number (own machine number) (step S5). When the emergency telephone set 2 receives the ID number at the first PB receiving section 201, it transfers the ID number to the first microcomputer 202, and determines whether or not the received ID number matches the own machine number 206. . If they do not match (step S5; NO), the emergency telephone 2 continues the standby state without executing processing related to inspection.

If the ID numbers match (step S5; YES), the emergency telephone 2 activates the solenoid 203 by means of the first microcomputer 202 (step S6). When the solenoid 203 is activated, the hook member 250 is mechanically rotated and the second arm portion 253 of the hook member 250 turns on the hook switch 204 . The emergency telephone 2 with the hook switch 204 turned on calls the reception desk 301 via the track monitoring device 6, the second automatic exchange facility 8, the first automatic exchange facility 305, the test control device 304, etc. (step S7). After that, in the emergency telephone 2 (emergency telephone to be inspected) whose hook switch 204 is turned on, power is supplied to the second microcomputer 211, and the second microcomputer 211 is activated. After starting, the second microcomputer 211 causes the first microcomputer 202 to stop applying current to the coil 261 of the solenoid 203, and starts applying current to the coil 261 of the solenoid 203 by itself. keeps the hook switch 204 turned on.

The reception desk 301 responds to the call from the emergency telephone 2 and receives a test start operation (step S8), and transmits a signal instructing the test start to the test control device 304 (step S9). The signal instructing the start of the test includes, for example, information identifying the emergency telephone 2 selected for inspection. The test start operation is, for example, an operation on a button switch provided on the reception desk 301 or the handset 302 connected to the reception desk 301 . When the test control device 304 receives a signal for instructing the start of the test from the reception board 301, the first automatic exchange facility 305, the second automatic exchange facility 8, and the track monitor are connected to the emergency telephone 2 to be inspected. A PB signal is transmitted as a signal to start the test via the device 6 and the emergency telephone line 5 (step S10).

Upon receiving the PB signal from the test control device 304, the emergency telephone set 2 selected for inspection performs recording processing by the recorder 216 (step S11). Emergency telephone 2 transfers the PB signal received by speech network 205 to second microcomputer 211 via second PB receiver 210, and second microcomputer 211 confirms the PB number. After that, the emergency telephone 2 switches the third switch 219 to the recorder 216 side, switches the fourth switch 220 to the second selector 213 side, and switches the voice signal output by the transmitter 209 of the handset 207 (transmitted voice signal). signal) by the recorder 216 is started.

At this time, the emergency telephone 2, for example, first records the voice signal from the reception board 301 for a predetermined first period (for example, 5 seconds), and then records it for a predetermined second period (for example, 3 seconds). An audio signal (for example, a 400 Hz acoustic signal) output by the oscillator 221 is recorded. When the emergency telephone 2 starts the recording process, first, the first switch 217 is switched to the first selector 212 side and the second switch 218 is switched to the first amplifier 214 side. A test audio signal (receiving signal) transmitted from 301 is amplified by first amplifier 214 and output (sound) from handset 208 of handset 207 as audio (receiving sound). The test voice signal transmitted from the reception board 301 is, for example, a voice signal of a predetermined word or sentence uttered by a staff member of the control center 3 toward the handset 302 connected to the reception board 301 . That is, after transmitting a signal instructing the start of the test to the test control device 304, the reception board 301 outputs a test voice signal (test voice) to the emergency telephone 2 (step S12). During the first period, the emergency telephone 2 converts the test voice signal transmitted from the reception desk 301 from 2-wire to 4-wire in the speech network 205, and the converted voice signal is amplified by the first amplifier 214. output from the receiver 208. After the first period has elapsed, the emergency telephone 2 switches the first selector 212 , amplifies the voice signal generated by the oscillator 221 with the first amplifier 214 , and outputs the signal from the receiver 208 . After the second period has elapsed, the emergency telephone 2 terminates the transmission of the voice signal by the oscillator 221 and terminates the recording by the recorder 216 .

When the recording process is finished, the emergency telephone 2 reproduces the voice signal (transmitting signal) recorded by the recorder 216 and transmits it to the reception desk 301 (step S13). In the reproduction process, the emergency telephone 2 amplifies the voice signal (sending signal) reproduced by the recorder 216 by the second amplifier 215, and then converts it from 4-wire to 2-wire in the speech network 205 to make an emergency call. Output to line 5. The second amplifier 215 amplifies the line loss based on the line loss setting 223 . The voice signal (playback voice) output to the emergency telephone line 5 is sent to the reception desk 301 via the line monitoring device 6, the second automatic switching equipment 8, the first automatic switching equipment 305, the test control device 304, etc. It is transmitted (step S14). Audio signals transmitted to reception desk 301 may be stored in test controller 304, for example.

When the reproduction process is finished, the emergency telephone 2 switches the second selector 213 and outputs the PB signal output by the second PB transmitting section 222 to the emergency telephone line 5 (step S15). After that, the emergency telephone 2 switches the third switch 219 and the fourth switch 220 to the path side not via the recorder 216 and the second selector 213 .

The reception desk 301, which has received the PB signal following the reproduced voice, disconnects the emergency telephone 2 currently being inspected via the emergency telephone line 5 (step S16). At this time, a lockout signal is transmitted through the emergency telephone line 5 or the like to the emergency telephone 2 currently being inspected (step S17). In the emergency telephone 2 that has received the lockout signal, for example, the second microcomputer 211 is powered off and the solenoid 203 is stopped (step S18). When the solenoid 203 stops, the hook member 250 that has turned on the hook switch 204 moves in the direction in which the second arm 253 moves away from the hook switch 204 due to the load from the handset 207 hung on the third arm 254 . (counterclockwise direction in FIG. 4). As a result, the hook switch 204 of the emergency telephone 2 is turned off (that is, the connection with the emergency telephone line 5 is released), and the emergency telephone 2 enters a standby state.

After completing the inspection of one emergency telephone 2 out of the plurality of emergency telephones 2 according to the above procedure, by repeating the above-described process while changing the ID number of the emergency telephone 2 to be inspected, A plurality of emergency telephones 2 in the area to be inspected can be sequentially inspected remotely.

Although not shown in FIG. 5, when the human sensor 224 in the emergency telephone 2 under inspection detects a person, the emergency telephone 2 may stop inspection. For example, when the first microcomputer 202 determines that a person has been detected based on the output of the human sensor 224, the first microcomputer 202 sends a signal instructing the second microcomputer 211 to stop the solenoid 203. Output. When the second microcomputer 211 stops the solenoid 203, the hook switch 204 is turned off and the connection between the emergency telephone 2 and the emergency telephone line 5 is released. If the connection is disconnected during inspection, and then the person (user) who detected it picks up the handset 207 of the emergency telephone 2 and reconnects the emergency telephone 2 and the reception desk 301, the staff of the control center 3 , it can be confirmed that the cause of disconnection is not due to an abnormality in the emergency telephone 2 concerned. In addition, if the emergency telephone 2 and the reception desk 301 are not connected even after a predetermined period of time after the connection is canceled during inspection, for example, the emergency telephone 2 is inspected again. , the presence or absence of an abnormality in the emergency telephone 2 can be confirmed.

Also, although not shown in FIG. 5, when the hook switch 204 of an emergency telephone 2 other than the emergency telephone 2 under inspection, which is included in one block 4, is turned on, the emergency telephone 2 under inspection is , the solenoid 203 may be stopped to stop the inspection. Here, the emergency telephone 2 different from the emergency telephone 2 under inspection includes, for example, the emergency telephone 2 whose hook switch 204 is turned on by picking up the handset 207 of the emergency telephone 2 not under inspection. By doing so, it is possible to give priority to notifying the control center 3 of the occurrence of an emergency, and it is possible to deal with the emergency at an early stage.

As described above, in the emergency telephone system 1 according to the present embodiment, an emergency call to which information indicating that it has been selected as an inspection object is input via a telephone line (business telephone line 10) different from the emergency telephone line 5 is input. The telephone set 2 mechanically moves the hook member 250 that switches the hook switch 204 on and off to switch the hook switch 204 from off to on. Therefore, it is possible to remotely check whether the operation of the hook member 250 of the emergency telephone 2 is normal or not without having to pick up the handset 207 of the emergency telephone 2 and inspect it. be able to. In addition, in the emergency telephone system 1 according to the present embodiment, the test voice signal transmitted from the reception desk 301 to the emergency telephone 2 is output from the receiver 208 of the emergency telephone 2 and picked up by the transmitter 209, A voice signal (transmission signal) output from the transmitter 209 is recorded, and the recorded voice signal is reproduced and transmitted to the reception board 301 . Therefore, whether or not the transmission path from the reception desk 301 to the emergency telephone 2, including the emergency telephone line 5, is normal can be checked remotely. Furthermore, the emergency telephone 2 outputs the audio signal output by the oscillator 221 provided therein as another test audio signal from the receiver 208 of the emergency telephone 2 and picks up the sound with the transmitter 209. The output voice signal (sending signal) is recorded, and the recorded voice signal is reproduced and transmitted to the reception board 301 . Therefore, when it is determined that there is an abnormality in the transmission path based on the voice signal (reproduced voice) transmitted from the emergency telephone 2 to the reception desk 301, for example, the path from the reception desk 301 to the emergency telephone 2, the emergency telephone 2 handset 207 and emergency telephone 2 to the receiving console 301 where there is an abnormality. Therefore, in the emergency telephone system 1 according to the present embodiment, the transmission path between the emergency telephone 2 including the emergency telephone line 5 and the reception desk 301 and the operation of the emergency telephone 2 can be inspected remotely. It is possible to efficiently perform inspection work for a plurality of emergency telephones 2 scattered over a wide area.

In addition, as described above, the emergency telephone 2 according to the present embodiment outputs (sounds) the audio signal amplified by the first amplifier 214 from the receiver 208 of the handset 207 in the recording process (step S11) during inspection. , and in the reproduction process at the time of inspection (step S13), the voice signal amplified by the second amplifier 215 is output to the emergency telephone line 5. FIG. Furthermore, in the recording process at the time of inspection, a voice signal of a predetermined frequency output by the oscillator 221 of the emergency telephone 2 is recorded, which is different from the voice signal transmitted from the reception board 301 via the emergency telephone line 5. - 特許庁Therefore, it is possible to appropriately check the voice quality of the emergency telephone 2 having an indefinite ambient noise level, such as the emergency telephone 2 installed on a highway network. In particular, in the emergency telephone 2 according to the present embodiment, the receiver 208 outputs (broadcasts) an audio signal (transmitting signal) output by the transmitter 209 as described below with reference to FIGS. By providing a sound-conducting member for making a sound signal that more appropriately reflects the received sound for testing (sound), it is possible to more appropriately check the sound quality of the emergency telephone 2 whose ambient noise level is indefinite. be able to.

FIG. 6 is a schematic diagram illustrating an example of an external configuration of an emergency telephone according to one embodiment. FIG. 7 is a schematic diagram illustrating a configuration example of a transmitter in a handset of an emergency telephone. FIG. 8 is a perspective view illustrating a configuration example of a sound release box in an emergency telephone according to one embodiment. FIG. 9 is a schematic diagram explaining an example of the operation of the emergency telephone according to one embodiment.

FIG. 6 schematically shows a front view and a left side view for explaining a configuration example of the sound guide member attached to the housing 2100 of the emergency telephone 2 according to this embodiment. 6 omits illustration of the handset 207 and a conductive wire such as a curled cord that connects the circuit in the housing 2100 and the handset 207. As shown in FIG. Also, in the front view of housing 2100 in FIG. 6, hook member 250 on which handset 207 is hung is omitted.

Enclosure 2100 houses one or more electronic components, including, for example, the circuitry described above with reference to FIG. On the front of the housing 2100, along with a plate indicating the ID number of the emergency telephone 2 and how to use it, for example, button switches 2101 to 2104 for selecting the purpose of use of the emergency telephone 2, an adjustment button 2105 for adjusting the volume of the incoming call, and a human sensor 224. etc. are provided. Further, the hook member 250 described above with reference to FIG. A portion 253 extends inside the housing 2100 and a third arm portion 254 extends outside the housing 2100 . For example, when the user of the emergency telephone 2 picks up the handset 207 not shown in FIG. Is displayed.

The left side of the housing 2100 in the emergency telephone 2 illustrated in FIG. A connected second sound conducting box 2300 is attached. The sound guide tube 2400 is a tubular member that guides the received sound output (sound emitted) by the receiver 208 of the handset 207 to the transmitter 209 . A drain hose made of a highly weather-resistant resin material, for example, can be used for the sound guide tube 2400 . The sound guide tube 2400 is attached to the housing 2100 with metal fittings 2500 .

The first sound guide box 2200 is a box-shaped member that prevents diffusion of the received sound output from the receiver 208 and guides the received sound to the sound guide tube 2400, and is positioned to face the receiver 208 during inspection (see FIG. 9). , are attached to the housing 2100 . The first sound conducting box 2200 includes a box portion 2210 and metal fittings 2250 . The box portion 2210 has an opening 2220 at the bottom for taking in the received sound output by the receiver 208 during inspection. box 2210). The opening 2220 is covered with, for example, a net 2230 for preventing foreign matter from entering. The metal fitting 2250 has a first mounting portion for mounting one end of the sound guide tube 2400, a second mounting portion for mounting the box portion 2210, and a third mounting portion for mounting the metal fitting 2250 itself to the housing 2100. and

The second sound guide box 2300 is a box-shaped member that further guides the received sound guided by the sound guide tube 2400 to the microphone 209, and is arranged so as to face the microphone 209 during inspection (see FIG. 9). Attached to body 2100 . The second sound guide box 2300 includes a box portion 2310 and metal fittings 2350 . The second sound guide box 2300 in the emergency telephone 2 of this embodiment, as illustrated in FIG. The sound and the captured environmental sound are emitted toward the transmitter 209 from the opening 2320 formed in the bottom surface 2311 of the box portion 2310 . The number of openings 2321 formed in the side surface 2312 of the box part 2310, the dimensions of each opening 2321, and the like are not particularly limited. The metal fitting 2350 has a first mounting portion for mounting the other end of the sound guide tube 2400, a second mounting portion for mounting the box portion 2310, and a third mounting portion for mounting the metal fitting 2350 itself to the housing 2100. and a mounting portion. FIG. 8 shows an example of the configuration of the first mounting portion of the metal fitting 2350, in which the metal fitting 2350 is formed with an opening 2351 that communicates with the sound conducting tube 2400 and is smaller than the external shape of the sound conducting tube 2400. However, the first mounting portion of the fitting 2350 is not limited to such.

When inspecting the emergency telephone 2 of this embodiment, as illustrated in FIG. 9, the hook member 250 is mechanically moved (rotated) by remote control to turn on the hook switch 204 in the housing 2100 . At this time, while the handset 207 is hung on the third arm portion 254 of the hook member 250, the receiver 209 picks up the received sound for testing output (sound emitted) from the receiver 208. . However, the handset 207 has a shape that is assumed to be used with the receiver 208 positioned near the user's ear and the transmitter 209 positioned near the user's mouth. . In other words, the handset 207 is not shaped so that most of the received sound output by the receiver 208 can be picked up by the transmitter 209 . For this reason, in order to more appropriately check the voice quality of the emergency telephone 2 of this embodiment, the first sound conducting box 2200, the sound conducting tube 2400, and the second sound conducting box 2300 described above should output from the receiver 208. It is preferable to direct the received test tone to the microphone 209 .

In particular, the emergency telephone 2 of this embodiment is often installed near a road on which an outdoor vehicle is running, and the voice picked up by the transmitter 209 when making a call using the emergency telephone 2 often includes environmental sounds such as running sounds of vehicles. For this reason, the transmitter 209 of the handset 207 of the emergency telephone 2 normally outputs an audio signal obtained by suppressing or removing environmental sound components from an audio signal obtained by picking up sound with a microphone, as a transmission signal. It is configured. For example, as shown in FIG. 7, the transmitter 209 of the handset 207 includes a first opening 207A that is used to collect the user's speech that may include environmental sounds. , and a second opening 207B used for collecting environmental sound. The first opening 207A is formed on the surface facing the direction of the user's mouth when the user makes a call using the handset 207, and the second opening 207B is formed on the surface facing the first opening. It is formed so as to be able to pick up environmental sounds from a surface different from the surface on which the portion 207A is formed. For example, the microphone 209 picks up the sound (including the received sound and the environmental sound) reaching the microphone 209 through the first opening 207A, and converts the sound into the second opening 207B. It suppresses or removes components corresponding to audio signals obtained by collecting sounds (mainly environmental sounds) reaching the transmitter 209 through the microphone.

In this way, the transmitter 209 in the handset 207 of the emergency telephone 2 suppresses or removes the environmental sound from the user's speech sound including the environmental sound, and outputs a transmission signal that makes it easy to hear the user's speech sound. configured to be able to For this reason, for example, the second sound guide box 2300 is configured such that only the received sound guided by the sound guide tube 2400 is picked up by the transmitter 209 (more specifically, the box part 2310 If the opening 2321 is not formed in the side surface 2312), the sound reaching the microphone 209 through the first opening 207A (see FIG. 7) of the handset 207 does not contain the environmental sound or contains environmental sound components. becomes a very low received sound. In this case, the microphone 209 picks up the sound that reaches the microphone 209 through the first opening 207A (received sound for testing that does not contain environmental sound or has a very small environmental sound component). A process of suppressing or removing a component corresponding to an audio signal obtained by collecting sounds (mainly environmental sounds) reaching the transmitter 209 through the second opening 207B. Therefore, an appropriate transmission signal corresponding to the received sound may not be output.

On the other hand, the second sound conducting box 2300 in the emergency telephone 2 of this embodiment is the second sound conducting box 2300 facing and contacting the transmitter 209 portion of the handset 207 as described above with reference to FIGS. Environmental sound is taken into the sound guide box 2300 of the sound guide tube 2400, and the sound including the received sound from the sound guide tube 2400 and the taken environmental sound is picked up by the transmitter 209. - 特許庁More specifically, the transmitter 209 receives the test voice and environmental sound reaching the transmitter 209 through the first opening 207A illustrated in FIG. The environmental sound reaching the device 209 is picked up. Therefore, the transmitter 209 suppresses or removes the environmental sound component from the audio signal containing the received sound and the environmental sound obtained by collecting the sound, and outputs an audio signal (transmitting signal) corresponding to the received sound. can do. That is, by providing the opening 2321 for taking in the environmental sound in the side surface 2312 of the box portion 2310 of the second sound guide box 2300, the user of the emergency telephone 2 can inspect the emergency telephone 2 remotely. The received sound output by the receiver 208 can be picked up by the transmitter 209 in a state similar to when a worker actually uses the handset 207 to make a call. Therefore, according to the emergency telephone 2 of the present embodiment, it is possible to prevent suppression or removal of excessive (unnecessary) noise components for the test received sound output by the receiver 208 in the transmitter 209. The voice quality inspection for the emergency telephone 2 can be performed more appropriately.

It should be noted that the functions, configurations, and operations of the emergency telephone 2 described in the above-described embodiment are merely examples. The function, configuration, and operation of the emergency telephone 2 according to the present invention are not limited to the above-described embodiment, and can be modified as appropriate without departing from the gist of the present invention. For example, the configuration (combination of shapes, materials, etc.) of the sound-conducting member that guides the sound output by the receiver 208 during inspection to the transmitter 209 is not limited to the configuration described above with reference to FIGS. It is possible. Further, for example, the circuit configuration of the emergency telephone 2 is not limited to the circuit configuration illustrated in FIG. 3, and can be changed as appropriate. Furthermore, the emergency telephone 2 may switch the hook switch 204 on and off by moving the hook member 250 in translation, or use a power other than the solenoid 203 to move the hook member 250. may

1 emergency telephone system 2 emergency telephone 3 control center 4 block 5 emergency telephone line 6 line monitoring device 7 communication machine room 8 second automatic switching device 9 line control device 10 business telephone line 201 first PB receiving unit 202 first Microcomputer 203 Solenoid 204 Hook switch 205 Speech network 206 Own machine number 207 Handset 207A, 207B Opening 208 Receiver 209 Transmitter 210 Second PB receiver 211 Second microcomputer 212 First selector 213 Second selector 214 First amplifier 215 Second amplifier 216 Recorder 217 First switch 218 Second switch 219 Third switch 220 Fourth switch 221 Oscillator 222 Second PB transmitter 223 Line loss setting 224 Human sensor 225 First 250 hook member 251 shaft 252 first arm portion 253 second arm portion 254 third arm portion 255 receiving portion 256 spring 261 coil 262 magnetic member 263 mounting member 2100 housing 2101 to 2104 button switch 2105 adjustment button 2200 first sound guide box 2210 box part 2220 opening 2250 metal fitting 2300 second sound guide box 2310 box part 2311 bottom surface 2312 side surface 2320, 2321 opening 2350 metal fitting 2400 sound guide tube 2500 metal fitting

Claims (4)

An emergency telephone connected to a reception desk via an emergency telephone line,
a receiving unit for receiving a start signal instructing the start of inspection transmitted via a telephone line different from the emergency telephone line;
a solenoid for mechanically moving a hook member for switching on/off of a switch connecting the emergency telephone with the emergency telephone line between a position for turning off the switch and a position for turning on the switch;
activating the solenoid when the start signal is received to mechanically move the hook member from the position of turning off the switch to the position of turning on the emergency telephone via the emergency telephone line; to the reception board; and
recording an audio signal obtained by picking up sound with a transmitter while outputting audio from the receiver of the emergency telephone connected to the emergency telephone line, and recording the audio signal by suppressing or removing environmental sound components; a recording unit that reproduces the generated audio signal on the emergency telephone;
a second control for stopping the solenoid and mechanically moving the hook member from the switch-on position to the switch-off position to disconnect the emergency telephone from the emergency telephone line; and
a sound guide tube that guides the sound output from the receiver during inspection to the transmitter;
connected to the sound guide tube and arranged between the sound guide tube and the transmitter for transmitting the sound from the sound guide tube and the environmental sound introduced from the outside during the inspection; An emergency telephone, further comprising a sound guide box for picking up sound into a telephone. the hook member has an arm portion on which a handset including the receiver portion and the transmitter portion is hung;
In the sound conducting box, when the hook member is mechanically moved from the switch-off position to the switch-on position, the first surface of the sound conducting box is hung on the arm. facing and in contact with the microphone portion of the handset in the folded state;
A second surface different from the first surface of the sound conducting box is formed with an opening for introducing the environmental sound from the outside,
2. The emergency telephone according to claim 1, wherein said first surface of said sound guide box is formed with an opening for guiding said voice and said environmental sound to said transmitter. a sound guide connected to the sound guide and disposed between the sound guide and the receiver, preventing diffusion of the sound output from the receiver during the inspection and directing the sound to the sound guide; 3. The emergency telephone according to claim 1, further comprising a sound guide member for. The emergency telephone according to any one of claims 1 to 3, further comprising an amplifier for amplifying an audio signal output from said receiver.

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