JP2017016221A - Test supporting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow the testing work of a sensor to proceed without an anxiety by confirming the operation of a receiver side even if the testing work is performed by only one tester.SOLUTION: A test tool 10 includes: a telephone plug 14 freely connected and disconnected to a telephone jack, to which a voice signal from a receiver of a fire warning facility is applied through a telephone circuit, through a telephone cable 18 pulled out from a tool main unit 12; and a microphone plug 16 freely connected and disconnected to a microphone input terminal of a transceiver through a microphone cable 20 pulled out from the tool main unit 12. The tool main unit 12 houses a circuit unit for instructing the transceiver to perform transmission operation when the voice signal is being input through the telephone plug 14 and transmitting the voice signal by radio.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a test support jig for supporting a test or the like of a fire detector provided in a fire alarm facility.

  Conventionally, fire alarm equipment is regularly inspected when the equipment is installed or in operation, and a sensor test is performed in which the fire detector is actually operated using a test jig.

  The sensor test is performed by two inspectors, one at the receiver and one at the sensor. The inspector on the sensor side uses a test jig provided with a test head at the tip of the support pole, and attaches the test head from the bottom so as to cover the smoke detector, for example, and smoke flows from the test head in this state. Operate the smoke detector, or operate the smoke detector by operating a reed switch with a magnet, etc., and the receiver inspector confirms whether there is a fire reception accompanying the operation test of the fire detector. The test work is proceeding while communicating with transceivers.

  As described above, the sensor test requires at least two inspectors, and a sensor test system that can be performed by one person is expected for the purpose of reducing work man-hours. For example, the receiver is equipped with a printer that detects fire reception and prints out the test results. The test of the fire detector installed in the alert area is performed using a test jig. It is a sensor test system that judges whether a fire sensor that has performed an operation test is normal or abnormal by looking at the recorded contents.

  In such a sensor test by one inspector, since there is no inspector on the receiver side and a fire alarm recovery operation from the receiver accompanying the sensor test cannot be performed, prior to the sensor test, for example, For district acoustic alarms, perform an alarm stop operation, and for the main acoustic alarm issued from the receiver, perform an operation to set the alarm to be output only while the fire detection signal is received, regardless of the recovery operation. Will do.

JP 05-151478 A Japanese Patent Application Laid-Open No. 2002-026744

  However, in such a sensor test system that enables a sensor test by one conventional inspector, the operation test of the fire detector installed in the alert area by the inspector using the test jig. If the sensor is used, it is not possible to know whether the sensor has received a test and the receiver has received it normally. Compared to the tests that are being performed, the situation on the receiver side cannot be grasped in real time. There is a problem that increases.

  In addition, if a fire actually occurs during the test work of the sensor, a fire alarm is output from the receiver, but it can be distinguished whether this fire alarm is due to a sensor test or due to an actual fire. There are also cases where it is difficult to get on and it is sometimes difficult to hear the alarm sound from the receiver, and it takes time to notice the fire, and there is a possibility that it cannot be promptly and appropriately dealt with.

  An object of the present invention is to provide a test support jig capable of confirming the operation on the receiver side even in a test work by one inspector and allowing the test work of the sensor to proceed without anxiety. .

(Test support jig)
The present invention is a test support jig,
A jig body;
A telephone plug that is detachably connected to a telephone jack through which a voice signal is supplied from a receiver of a fire alarm facility via a telephone line via a signal line cable drawn from the jig body;
A microphone plug pulled out from the jig body and detachably connected to the microphone input terminal of the communication terminal via the signal line cable;
A circuit unit that is housed in the jig body and instructs a transmission operation to the communication terminal via the microphone plug when the audio signal is input via the telephone plug, and wirelessly transmits the audio signal;
It is provided with.

(Circuit unit for communication terminal with PTT function)
When the communication terminal to which the microphone plug is connected detects the current flowing through the microphone input terminal by operating the microphone switch (push talk (TPP) switch), it switches to transmission operation and wirelessly transmits the audio signal input from the microphone input terminal. If you have the function to
The circuit unit is
A switch circuit section for turning on and off the output of the audio signal input from the telephone plug to the microphone plug;
A switch control unit that turns on the switch circuit unit to output the audio signal when detecting the input of the audio signal, and turns off the switch circuit unit when the input of the audio signal is not detected;
A dummy resistor that is connected to the input side of the switch circuit unit and switches the communication terminal to the transmission operation by supplying a current corresponding to the operation of the microphone switch to the microphone input terminal of the communication terminal to which the microphone plug is connected when the switch circuit unit is turned on. When,
Is provided.

(Additional configuration of circuit unit)
The circuit unit is further
A non-polarization circuit unit for connecting the telephone plug with a non-polar connection polarity to the telephone jack;
A protection circuit unit that inputs the output of the non-polarization circuit unit and suppresses overvoltage applied from the telephone line;
A filter circuit unit that receives the output of the protection circuit unit, removes the hum noise component superimposed on the telephone line, and passes a signal of a predetermined voice band; and
A gain adjustment circuit unit that inputs the output of the filter circuit unit, adjusts the audio signal obtained from the telephone line to a signal level suitable for the microphone input of the communication terminal, and outputs the signal level to the switch circuit unit;
With
The output of the filter circuit unit is input to the switching control unit.

(Constant voltage circuit)
The circuit unit further inputs a DC voltage superimposed on the telephone line from the protection circuit unit to generate a predetermined power supply voltage, and the power supply voltage is switched to a switch circuit unit, a switch control unit, a filter circuit unit, and a gain adjustment unit. A constant voltage circuit unit for supplying to the circuit is provided.

(Test support jig for communication terminals with VOX function)
When the communication terminal to which the microphone plug is connected has a function of wirelessly transmitting the audio signal by switching to the transmission operation when detecting the input of the audio signal from the microphone connected to the microphone input terminal,
The circuit unit is
A non-polarization circuit unit for connecting the telephone plug with a non-polar connection polarity to the telephone jack;
A protection circuit unit that inputs the output of the non-polarization circuit unit and suppresses overvoltage applied from the telephone line;
A filter circuit unit that receives the output of the protection circuit unit, removes a hum noise component superimposed on the telephone line, and passes a signal of a predetermined voice band; and
A gain adjustment circuit unit that inputs the output of the filter circuit unit, adjusts the audio signal obtained from the telephone line to a signal level suitable for the microphone input of the communication terminal, and outputs the signal level to the microphone input terminal of the communication terminal;
Is provided.

(Constant voltage circuit)
The circuit unit further includes a constant voltage circuit unit that inputs a DC voltage superimposed on the telephone line from the protection circuit unit to generate a predetermined power supply voltage and supplies the power supply voltage to the filter circuit unit and the gain adjustment unit. Provide.

(Transceiver)
The communication terminal is a transceiver that performs voice communication.

(Sensor test)
The test support jig is used for detector testing of fire alarm equipment.

(Basic effect)
In the test support jig according to the present invention, a jig body, a telephone plug detachably connected to a telephone jack via a signal line cable drawn from the jig body, and a signal line drawn from the jig body A microphone plug that is detachably connected to the microphone input terminal of the communication terminal via a cable and a communication terminal that is housed in the jig body and that receives a voice signal via the telephone plug. Since a circuit unit for instructing the transmission operation and transmitting the audio signal wirelessly is provided, for example, when performing a sensor test, an inspector, for example, a telephone of a transmitter provided at a place where the fire sensor to be tested is installed Connect the telephone plug of the test support jig to the jack, connect the communication terminal to the microphone plug of the test support jig, carry another communication terminal, and use the test jig in this state. When a test report is sent to the disaster detector, a voice signal indicating the line report sent from the receiver to the telephone line is sent to the communication terminal via the test support jig and transmitted wirelessly, and is carried by the inspector. The alarm line is output by voice from another communication terminal, and the tester can know in real time that the fire reception by the fire alarm test report has been performed normally and know the operation of the receiver. Thus, even one inspector can proceed with the test work without anxiety, and it is not necessary to return to the receiver in the middle of the work to confirm the launch of the printer, and the work burden can be greatly reduced.

  In addition, transmitters equipped with telephone jacks that connect communication terminals with test jigs are always installed in each warning area divided by floor, for example. A possible wireless communication area is reliably formed, and even if it is a place away from the receiver, a test report can be reliably transmitted to a communication terminal owned by an inspector so that the notification can be made.

(Effect of circuit unit for communication terminal with PTT switch function)
In addition, when a communication terminal connected to the microphone plug detects a current flowing through the microphone input terminal by operating a microphone switch (push / talk (TPP) switch), the communication terminal is switched to a transmission operation and an audio signal input from the microphone input terminal is received. When the wireless transmission function is provided, the circuit unit includes a switch circuit unit that turns on and off the output of the audio signal input from the telephone plug to the microphone plug, and a switch circuit unit that detects the input of the audio signal. Turns on and outputs an audio signal, and when no audio signal input is detected, the switch control unit turns off the switch circuit unit, and is connected to the input side of the switch circuit unit and when the switch circuit unit is turned on, the microphone Sends the communication terminal by sending a current corresponding to the operation of the microphone switch to the microphone input terminal of the communication terminal connected to the plug. Since a dummy resistor for switching is provided, the voice transmission switching function by manual operation of the PTT switch functioning as a microphone switch is automatically performed by the switch control circuit, the switch circuit and the dummy resistor of the test support jig. By using a communication terminal such as a commercially available transceiver that can be connected to a microphone with a switch, the audio signal from the receiver is sent to the communication terminal using the test support jig and transmitted wirelessly. It is possible to output the line alert of the receiver from a portable communication terminal.

(Effects of additional circuit unit configuration)
In addition, the circuit unit is further provided with a non-polarization circuit part for connecting the telephone plug to the telephone jack with a non-polar connection, and an output of the non-polarization circuit part for protecting the overvoltage applied from the telephone line. Input the output of the circuit unit and the protection circuit unit, remove the hum noise component superimposed on the telephone line and pass the signal of the predetermined voice band, and input the output of the filter circuit unit, A gain adjustment circuit unit that adjusts the audio signal obtained from the line to a signal level suitable for the microphone input of the communication terminal and outputs the signal level to the switch circuit unit, and inputs the output of the filter circuit unit to the switching control unit Therefore, it is not necessary to consider the connection polarity when connecting the telephone line with the DC voltage superimposed to the test support jig, and excessive surge voltage from the telephone line side to the test support jig The circuit part will not be damaged even if it is added, and the hum noise etc. superimposed on the telephone line will be removed to prevent malfunction of the switch circuit part due to noise, and furthermore, the voice adapted to the microphone input level of the communication terminal By outputting the signal, it is possible to transmit an audio signal having an appropriate volume without distortion.

(Effects of constant voltage circuit)
In addition, the circuit unit further inputs a DC voltage superimposed on the telephone line from the protection circuit unit to generate a predetermined power supply voltage, and the power supply voltage is switched to the switch circuit unit, the switch control unit, the filter circuit unit, and the gain. Since the constant voltage circuit unit to be supplied to the adjusting unit is provided, for example, when an integrated circuit is provided in the switch control unit or the filter circuit unit is an active filter having an operational amplifier, for example, a direct current of 24 volts input from a telephone line A stable voltage operation can be realized by generating a constant voltage of 5 volts from the voltage and supplying it to each circuit unit.

(Effects of circuit unit for communication terminal with VOX function)
In addition, when the communication terminal to which the microphone plug is connected has a function of wirelessly transmitting the audio signal by switching to the transmission operation when detecting the input of the audio signal from the microphone connected to the microphone input terminal, the circuit unit is A non-polarization circuit part that connects the telephone plug to the telephone jack with a non-polarization polarity, a protection circuit part that inputs the output of the non-polarization circuit part and suppresses overvoltage applied from the telephone line, and a protection circuit part Input the output, remove the hum noise component superimposed on the telephone line and pass the signal of the predetermined voice band, and input the output of the filter circuit part, the voice signal obtained from the telephone line A gain adjustment circuit that adjusts the signal level to match the microphone input of the communication terminal and outputs it to the microphone input terminal of the communication terminal is provided. By removing signal noise and adjusting to the appropriate microphone input level, when the input of the audio signal provided in the communication terminal is detected, it automatically switches to the transmission operation and enables the VOX function to wirelessly transmit the audio signal In this way, the voice signal input from the telephone line is wirelessly transmitted from the communication terminal, and the voice output of the notification line from the communication terminal carried by the inspector becomes possible.

(Effects of constant voltage circuit)
In this case as well, the test support jig further generates a predetermined power supply voltage by inputting the DC voltage superimposed on the telephone line from the protection circuit section, and the power supply voltage is adjusted to the filter circuit section and gain adjustment. Since the constant voltage circuit unit to be supplied to the unit is provided, when the filter circuit unit is an active filter using an operational amplifier and the operational amplifier is provided in the gain adjustment circuit unit, for example, from DC 24 volts input from a telephone line By generating a constant voltage of 5 volts and supplying it to each circuit unit, a stable circuit operation can be realized.

Explanatory drawing showing the appearance of the test support jig according to the present invention The block diagram which showed the outline of the circuit configuration of the test support jig used for the connection of the transceiver with the PTT switch function Explanatory drawing which showed the outline of the fire alarm equipment corresponding to the detector test using the test support jig of the present invention 3 is an explanatory diagram showing the configuration of the receiver in FIG. 3 together with a transceiver connected to a transmitter by a test support jig and a transceiver carried by a tester. Explanatory drawing which showed the external appearance of other embodiment of the test support jig by this invention The block diagram which showed the outline of the circuit constitution of the test support jig used for the connection of the transceiver with the VOX function

[Test support jig for sensor test]
(Structure of test support jig)
FIG. 1 is an explanatory view showing the appearance of a test support jig according to the present invention. As shown in FIG. 1, the test support jig 10 is formed of a plastic case, and a telephone cable 18 is pulled out from one side of a jig body 12 in which a circuit unit is housed, and a telephone plug 14 is connected. The microphone cable 20 is pulled out from the other side of the main body 12 and the microphone plug 16 is connected.

  The microphone plug 16 uses a two-pin plug provided with a microphone pin 16a and an earphone pin 16b. This two-pin plug is a commonly used plug for connecting the earphone microphone set to a transceiver functioning as a communication terminal. For this reason, the test support jig 10 of this embodiment also uses the same 2-pin plug as the earphone microphone set.

  Here, since the earphone pin 16b is not used in the circuit unit of the test support jig 10, it functions as a guide pin for guiding and fixing the plug to the transceiver. Moreover, it is good also as a single pin plug provided only with the microphone pin instead of the 2-pin plug.

  The total length of the test support jig 10 including the telephone cable 18 and the microphone cable 20 is such that the push button position in the transmitter of the fire alarm facility having a telephone jack for connecting the telephone plug 14 is 150 cm at the maximum from the floor. In order to reach the transmitter even if the transceiver connected by the test support jig 10 is rolled to the floor, the cable length is determined so that the total length is, for example, about 170 to 200 centimeters.

(Test support jig circuit unit)
FIG. 2 is a block diagram showing an embodiment of a circuit unit provided in a test support jig used for connection of a transceiver with a PTT switch function. Here, the transceiver with the PTT switch function can connect an earphone microphone with a PTT switch (talk push switch) functioning as a microphone switch to the microphone input terminal, and the transceiver can be operated for transmission by operating the PTT switch. A function of wirelessly transmitting an audio signal switched and input from a microphone is provided.

  As shown in FIG. 2, the circuit unit housed in the jig main body 12 of the test support jig 10 is non-polarized from the telephone plug 14 side for inputting an audio signal from the telephone line to the microphone plug 16 side connected to the transceiver. The characterization circuit unit 22, the protection circuit unit 24, the constant voltage circuit unit 26, the filter circuit unit 28, the gain adjustment circuit unit 30, the switch control unit 32, the dummy resistor 34, and the switch circuit unit 36 are provided.

  The non-polarizing circuit unit 22 includes a diode bridge, and makes the input polarity of the telephone plug 14 connected to the telephone jack of the transmitter connected to the telephone line on which DC 24 volts is superimposed to make an input connection. The protection circuit unit 24 includes a Zener diode, and suppresses overvoltage such as surge voltage applied from the telephone line side.

  The filter circuit unit 28 receives the output of the protection circuit unit 24 and is provided with an active high-pass filter provided with an operational amplifier. The filter circuit unit 28 removes the hum noise component superimposed on the telephone line and has a voice band of 340 Hz to 3.4 kHz. Pass the signal. Note that the filter circuit unit 28 may be a band-pass filter that passes a signal in the audio band of 340 Hz to 3.4 kHz.

  The gain adjustment circuit unit 30 receives the output of the filter circuit unit 28, and adjusts and outputs the audio signal obtained from the telephone line 42b to a predetermined signal level suitable for the microphone input of the transceiver with the PTT switch function by the gain adjustment amplifier. To do.

  The switch circuit unit 36 includes a semiconductor switch that turns on and off the output of the audio signal input from the gain adjustment circuit unit 30 to the microphone input terminal of the transceiver with the PTT switch function.

  The switch control unit 32 outputs an H level signal when the input of the audio signal from the filter circuit unit 28 is detected, turns on the switch circuit unit 36, and becomes L when no input of the audio signal is detected. Control to turn off the switch circuit unit 36 by outputting a level signal is performed.

  The dummy resistor 34 causes a current of a predetermined value or more to flow from the microphone input terminal of the transceiver with the PTT switch function via the dummy resistor 34 when the switch circuit unit 36 is turned on, and the transceiver with the PTT switch function is caused by the current flowing through the dummy resistor 34. Control to switch to the transmission operation.

  The function of the dummy resistor 34 creates the same state as when a microphone earphone set with a PTT switch is connected to the microphone earphone terminal of a transceiver with a PTT switch function and the PTT switch is turned on, and is switched to a transmission operation.

  The constant voltage circuit unit 26 inputs a 24 volt DC voltage superimposed on the telephone line from the protection circuit unit 24 to generate a predetermined power supply voltage, for example, a 5 VDC power supply voltage Vcc, and this power supply voltage Vcc is a filter circuit. The unit 28, the gain adjustment circuit unit 30, the switch control unit 32, and the switch circuit unit 36 are supplied to enable stable operation.

[Outline of fire alarm system for detector test using test support jig]
FIG. 3 is an explanatory diagram showing an outline of a fire alarm facility corresponding to a sensor test using the test support jig of the present invention, and a receiver known as a P type for monitoring a fire on a line basis is used. Take fire alarm equipment as an example.

  As shown in FIG. 3, a signal line 42 is drawn out from a receiver 40 installed in a management room of the building toward a warning area in the building. C and a telephone line T are used. Here, the fire alarm line L and the common line C constitute the fire alarm line 42a, and the telephone line T and the common line C constitute the telephone line 42b.

  A fire detector 44 installed for each predetermined sensing area in the alert area is connected to the fire alarm line 42a drawn from the receiver 40. The fire sensor 44 is a smoke sensor that detects smoke associated with a fire or a heat sensor that detects heat associated with a fire. When the fire detector 44 operates by detecting a fire from the smoke concentration or temperature detection signal (this is called “alarming” or “alarming operation”), a fire is caused by flowing an alarming current to the fire alarm line 42a A signal is transmitted to the receiver 40 to output a fire alarm.

  When the receiver 40 receives the fire signal transmitted from the fire detector 44 via the sensor line 42a, the receiver 40 outputs a fire alarm such as a main acoustic alarm, a district acoustic alarm, a representative fire display, and a district fire display. Further, the receiver 40 has a voice alarm function, and outputs a predetermined voice message indicating a line alert when receiving a fire signal.

  A transmitter 46 is connected to the fire alarm line 42 a drawn from the receiver 40. The transmitter 46 is installed in a common area such as a corridor wall surface when the fire detector 44 is installed in each warning area where a plurality of fire detectors 44 are installed, for example, in each room. The transmitter 46 is provided with a transmitter button 46a covered with a protective plate. When the switch is turned on by this push-in operation, a fire alarm signal is sent to the receiver 40 by sending a fire alarm current to the fire alarm line 42a. Is output.

  A telephone jack 48 that functions as a telephone connection terminal is provided in a cover door that can be freely opened and closed provided in the transmitter 46, and the telephone jack 48 is connected to a telephone line 42 b from the receiver 40. By inserting the plug of the emergency telephone carried by the tester into the telephone jack 48 provided on the transmitter 46, a call connection with the emergency telephone inserted in the telephone jack on the receiver 40 side becomes possible.

  Here, the transmitter 46 is connected to the fire alarm line 42a drawn from the receiver 40 for each warning area, but the telephone line 42b drawn from the receiver 40 is routed as a common line to all the warning areas. For this reason, the telephone jacks 48 provided in the plurality of transmitters 46 are commonly connected to the same telephone line 42b. Note that the telephone line 42b ensures the transmission quality of an audio signal in the audio frequency band 300 to 3400H of the audible band.

  Since such a fire alarm system corresponds to the sensor test using the test support jig of the present invention, when the sensor test mode is set by the receiver 40, the voice message output from the receiver 40 is received. An audio signal is output to the telephone line 42b.

  When performing the sensor test of the fire sensor 44, the tester 52 connects the transceiver 60 with the PTT switch function to the telephone jack 48 of the transmitter 46 by the test support jig 10, and the tester 52 is connected to another transceiver 62. To carry.

  For this reason, when the tester 52 performs the alarm test of the fire detector 44 using the test jig 50, the receiver 40 receives a fire signal from the sensor test and outputs a voice message indicating the fire alarm. However, the voice signal of this voice message is input to the test support jig 10 connected to the telephone jack 48 of the transmitter 46 via the telephone line 42b, and the transmission operation is instructed to the transceiver 60 with the PTT switch function. Is transmitted wirelessly, and a voice message indicating the line notification is output from the transceiver 62 carried by the tester 52.

[Fire alarm equipment that enables the use of test support jigs]
FIG. 4 is an explanatory diagram showing the configuration of the receiver in FIG. 3 together with the transceiver connected to the transmitter by the test support jig of the present invention and the transceiver carried by the tester.

  As shown in FIG. 4, the receiver 40 includes a control unit 64, and the control unit 64 includes a computer circuit including a CPU, a memory, and various input / output ports. For the control unit 64, a line receiving unit 66, a display unit 70, an operation unit 72, a transfer unit 74, an alarm unit 76, and a call circuit unit 80 are provided.

  The line receiving unit 66 detects a reporting current that flows when a fire is detected by the fire detector 44 or a push button operation of the transmitter 46, and outputs a fire signal to the control unit 64. The fire detector 44 continues the alarm operation when detecting a fire based on the smoke concentration and temperature, and stops the alarm operation when the fire state based on the smoke concentration and temperature is resolved. For this reason, the line receiver 66 outputs a fire signal while the fire detector 44 detects a fire and performs a notification operation, and outputs a fire signal when the fire detection operation of the fire detector 44 stops. To stop.

  The display unit 70 includes various indicator lamps and indicators provided on the front panel of the receiver or in the panel. For example, the display unit 70 is provided with a fire representative lamp, a district indicator lamp, a telephone lamp, a district acoustic pause lamp, a main acoustic stop lamp, and the like.

  The operation unit 72 includes various operation switches provided on the front panel of the receiver or in the panel. For example, the operation unit 72 is provided with a district sound temporary stop switch, a main sound stop switch, a switch for setting a sensor inspection mode, and the like. The transfer unit 74 is provided with a transfer circuit using a non-voltage relay contact that outputs a fire representative transfer signal or a line transfer signal to an externally connected display panel, for example.

  The alarm unit 76 is provided with an amplifier 76a and a speaker 76b, and an audio signal from the audio output port 78 of the control unit 64 is amplified by the amplifier 76a and output to the speaker 76b. Voice messages, voice messages indicating operation guidance, and the like can be output.

  The call circuit unit 80 has capacitors C1 and C2 connected in series to the telephone line T of the telephone line 42b, and the connection point of the capacitors C1 and C2 is connected to a telephone jack 82 provided in the receiver 40. Further, a power supply voltage Vc of 24 VDC, for example, is applied to the telephone line T via the resistor R3, and the divided voltage of the voltage dividing circuit in which the resistors R1 and R2 are connected in series is further transmitted to the control unit 64 as a call connection detection signal. Output.

  When an emergency telephone plug is inserted and connected to the telephone jack 48 of the transmitter 46, a current flows from the resistor R3 to the telephone line T, the emergency telephone of the telephone jack 48, and the common line C, and is divided by the resistors R1 and R2. The call connection detection signal (voltage signal) falls below a predetermined value, and this is detected by the control unit 64 to turn on the telephone lamp and output a ringing tone, and another emergency telephone is connected to the telephone jack 82 of the receiver 40. By inserting and connecting the flag, a call can be made with the emergency telephone on the transmitter 46 side.

  In addition to the configuration of the receiver 40, a telephone line connection unit 84 is provided to send the audio signal output from the audio output port 78 of the control unit 64 and amplified by the amplifier 76a to the telephone line 42b. The telephone line connection unit 84 inputs and connects the audio output port 78 via the amplifier 76b, and connects the output between the capacitors C1 and C2 provided in the call circuit unit 80, and makes a telephone call via the capacitors C1 and C2. It is connected to the line 42b.

  When the control unit 64 sets the sensor test mode based on a predetermined operation of the operation unit 72, the control unit 64 turns on the switch circuit unit built in the telephone circuit connection unit 84 and outputs the audio signal from the audio output port 78 to the telephone line 42b. Make it possible.

  The transceiver 60 connected to the transmitter 46 via the test support jig 10 and the transceiver 62 carried by the tester use a 400 MHz band in accordance with a specific low-power communication standard. For example, voice communication can be reliably performed up to about 50 meters.

[Control operation of sensor test using test support jig]
When performing the sensor test, the control unit 64 of the receiver 40 illustrated in FIG. 4 cancels the fire monitoring mode in the normal monitoring state when detecting the setting operation of the sensor test mode by the operation unit 72. Control to switch to sensor test mode setting. The sensor control mode by the control unit 64 is a mode in which the district sound alarm is prohibited and the main sound alarm and the voice message of the line notification are output while the fire signal is received. Further, in accordance with the setting of the sensor test mode, the control unit 64 turns on the telephone line connection unit 84 and performs control for connecting the audio output port 78 to the telephone line 12 side via the amplifier 76a.

  On the other hand, on the floor where the fire sensor 44 is installed and performing the sensor test, the tester connects the transceiver 60 with the PTT switch function to the telephone jack 48 of the transmitter 46 via the test support jig 10. The power is turned on to enter a standby state, and the tester carries another transceiver 62 and starts the test of the fire detector 44 using the test jig 50 as shown in FIG.

  When the control unit 64 of the receiver 40 detects reception of a fire signal in the detector test mode setting state, the control unit 64 outputs a voice signal of a voice message indicating a line alert from the voice output port 78, and the voice signal is transmitted to the telephone. The signal is sent to the telephone line 42 b via the line connection unit 84 and the call circuit unit 80, and is input to the test support jig 10 connected to the telephone jack 48 of the transmitter 18.

  As shown in FIG. 2, the test support jig 10 receives the audio signal from the receiver 40 via the telephone plug 14, the nonpolarization circuit unit 22, the protection circuit unit 24, and the filter circuit unit 28, and the switch control unit 32. Input, the audio signal is detected, an H level output is generated, and the switch circuit unit 36 is turned on, so that a current flows from the microphone input terminal of the transceiver 60 to which the microphone plug 16 is connected to the dummy resistor 34, and the transceiver 60 is switched to a transmission operation, and an audio signal adjusted to an appropriate level by the gain adjustment circuit unit 30 is output from the switch circuit unit 36 to the transceiver 60 for wireless transmission.

  For this reason, the tester 52 can know in real time that the fire reception by the test notification of the fire detector 44 has been normally performed by the receiver 40 by the sound output of the portable transceiver 62, and the receiver By knowing the operation of 40, even one inspector can proceed with the test work without anxiety, and it is not necessary to return to the receiver 40 in the middle of the work to confirm the launch of the printer. Can be reduced.

[Other Embodiments of Test Support Jig]
FIG. 5 is an explanatory view showing the appearance of another embodiment of the test support jig according to the present invention. As shown in FIG. 5, the test support jig 10 of the present embodiment draws out the telephone curl cable 19 from one side of the jig main body 12 containing the circuit unit and connects the telephone plug 14. The microphone curl cable 21 is pulled out from the other end of the cable, and the microphone plug 16 is connected. By using the telephone curl cable 19 and the microphone curl cable 21 in this way, the length of the transceiver with the microphone plug 16 on the opposite side when the telephone plug 14 is connected to the telephone jack of the transmitter provided on the wall surface is provided. The test support jig 10 can be easily handled.

  Thus, even when the telephone curl cable 19 and the microphone curl cable 21 are used, the push button position in the transmitter is a maximum of 150 cm from the floor surface. For example, the total length when the length is extended is about 170 to 200 centimeters.

  1 uses a straight cable and FIG. 5 uses a curled cable, either one may be a curled cable and the other may be a straight cable.

[Test support jig for transceiver with VOX function]
(Transceiver with VOX function)
As a transceiver that can be used by the test support jig of the present invention, there is a transceiver with a so-called VOX function. The transceiver's VOX function (Voice Operated Rely) is a function that detects voice input from a microphone and automatically switches between transmission and reception without using a PTT switch. When it is not detected, it switches to reception.

(Circuit function of test support jig)
FIG. 6 is a block diagram showing an outline of a circuit configuration of a test support jig used for connection of a transceiver having a VOX function.

  As shown in FIG. 6, the jig body 12 of the test support jig 10 includes a non-polarization circuit unit 22, a protection circuit unit 24, and a constant voltage circuit unit 26 from the telephone plug 14 side toward the microphone plug 16 side. A filter circuit unit 28 and a gain adjustment circuit unit 30 are provided. Since the non-polarization circuit unit 22, the protection circuit unit 24, the constant voltage circuit unit 26, the filter circuit unit 28, and the gain adjustment circuit unit 30 are the same as those in the embodiment of FIG.

  In the test support jig 10 of this embodiment, the polarity of the connection of the telephone plug 14 with respect to the telephone jack of the telephone line on which DC 24 volts is superimposed is input by the nonpolarizing circuit section 22 and the protection circuit section 24 is input. Suppresses overvoltage such as surge voltage applied from the telephone line, removes the hum noise component superimposed on the telephone line by the filter circuit 28, passes the signal in the audio band of 340 Hz to 3.4 kHz, and further adjusts the gain. The circuit unit 30 adjusts and outputs the audio signal obtained from the telephone line to a predetermined signal level suitable for the microphone input of the transceiver with the VOX function.

  A transceiver with a VOX function that inputs the audio signal from the test support jig 10 from the microphone input terminal automatically operates when the audio signal is detected by operating the mode switch on the transceiver body and selecting the VOX mode. When the sound signal is no longer detected, it automatically switches to reception. From this, the sound signal from the receiver is sent to the transceiver carried by the tester to output it, and the fire detector is tested. It is possible to know in real time whether or not the fire reception by the notification is normally performed by the receiver.

[Modification of the present invention]
(Target equipment)
In the above embodiment, the sensor test using the test support jig in the fire alarm facility is taken as an example, but the smoke evacuation facility, the security facility, etc., in which the master unit and the terminal slave unit are connected by a signal line and a telephone line. It can be applied to a test using a test support jig of an appropriate facility.
(R type fire alarm equipment)
The above embodiment exemplifies a sensor test using a test support jig in a P-type fire alarm facility, but an analog fire in which an address is set on a transmission line drawn from a receiver known as an R-type. Similarly, a disaster prevention monitoring facility for connecting a sensor and monitoring and alarming a fire in units of the sensor can perform a sensor test using a test support jig.

(Test jig)
In the above embodiment, the test support jig corresponding to the transceiver with the PTT function and the transceiver with the VOX function is taken as an example, but the switch control unit 32 is separated from the circuit of the test support jig in FIG. By providing a switching function for switching on the basis of the switch operation so that the unit 36 is always turned on, a transceiver having a TPP function and a transceiver having a VOX function may be selectively supported by one test support jig. .

(Phone jack)
In the above embodiment, the transceiver is connected to the telephone jack of the transmitter using a test support jig during a sensor test. However, the transceiver is connected to the telephone jack provided in a device other than the transmitter using the test support jig. This does not prevent the sensor test from being performed.

(Other)
The present invention is not limited to the above-described embodiment, includes appropriate modifications without impairing the object and advantages thereof, and is not limited by the numerical values shown in the above-described embodiment.

10: Test support jig 12: Jig body 14: Telephone plug 16: Microphone plug 18: Telephone cable 19: Telephone curl cable 20: Microphone cable 21: Microphone curl cable 22: Non-polarization circuit section 24: Protection circuit section 26 : Constant voltage circuit unit 28: filter circuit unit 30: gain adjustment circuit unit 32: switch control unit 34: dummy resistor 36: switch circuit unit 40: receiver 42: signal line 42a: fire alarm line 42b: telephone line 44: fire Sensor 46: Transmitter 48, 82: Telephone jack 50: Test jig 52: Tester 76: Alarm section 78: Voice output port 80: Call circuit section 84: Telephone line connection section

Claims (8)

A jig body;
A telephone plug that is detachably connected to a telephone jack via a signal line cable drawn from the jig body;
A microphone plug pulled out from the jig body and detachably connected to a microphone input terminal of a communication terminal via a signal line cable;
A circuit unit that is housed in the jig body and that, when the audio signal is input via the telephone plug, instructs the communication terminal to perform a transmission operation via the microphone plug and wirelessly transmits the audio signal; ,
A test support jig characterized by comprising:
The test support jig according to claim 1,
When the communication terminal to which the microphone plug is connected has a function of wirelessly transmitting an audio signal input from the microphone input terminal by switching to a transmission operation when a current flowing through the microphone input terminal is detected by an operation of a microphone switch,
The circuit unit is
A switch circuit unit for turning on and off the output of the audio signal input from the telephone plug to the microphone plug;
A switch control unit that turns on the switch circuit unit when the input of the audio signal is detected and outputs the audio signal, and turns off the switch circuit unit when the input of the audio signal is not detected;
A dummy resistor that is connected to the input side of the switch circuit unit and switches the communication terminal to a transmission operation by supplying a current corresponding to the operation of the microphone switch to the microphone input terminal of the communication terminal when the switch circuit unit is turned on. When,
A test support jig characterized by comprising:

The test support jig according to claim 2, wherein the circuit unit further includes:
A non-polarizing circuit part for connecting the telephone plug to the telephone jack with a non-polar polarity;
A protection circuit unit that inputs an output of the non-polarization circuit unit and suppresses an overvoltage applied from the telephone line;
A filter circuit unit that receives the output of the protection circuit unit, removes a hum noise component superimposed on the telephone line, and passes a signal of a predetermined voice band;
A gain adjustment circuit unit that inputs the output of the filter circuit unit, adjusts the audio signal obtained from the telephone line to a signal level suitable for a microphone input of the communication terminal, and outputs the signal level to the switch circuit unit;
With
A test support jig, wherein an output of the filter circuit unit is input to the switching control unit.
The test support jig according to claim 3, wherein the circuit unit further inputs a DC voltage superimposed on the telephone line from the protection circuit unit to generate a predetermined power supply voltage, and the power supply voltage A test support jig, comprising: a constant voltage circuit unit that supplies the switch circuit unit, the switch control unit, the filter circuit unit, and the gain adjustment unit.
The test support jig according to claim 1,
When the communication terminal connected to the microphone plug has a function of wirelessly transmitting the audio signal by switching to a transmission operation when detecting the input of the audio signal from the microphone connected to the microphone input terminal,
The circuit unit is
A non-polarizing circuit part for connecting the telephone plug to the telephone jack with a non-polar polarity;
A protection circuit unit that inputs an output of the non-polarization circuit unit and suppresses an overvoltage applied from the telephone line;
A filter circuit unit that receives the output of the protection circuit unit, removes a hum noise component superimposed on the telephone line, and passes a signal of a predetermined voice band;
A gain adjustment circuit unit that inputs an output of the filter circuit unit, adjusts a voice signal obtained from the telephone line to a signal level suitable for a microphone input of the communication terminal, and outputs the signal level to a microphone input terminal of the communication terminal; ,
A test support jig characterized by comprising:
6. The test support jig according to claim 5, wherein the circuit unit further inputs a DC voltage superimposed on the telephone line from the protection circuit unit to generate a predetermined power voltage, and the power voltage A test support jig, comprising: a constant voltage circuit unit that supplies the filter circuit unit and the gain adjustment unit.
6. The test support jig according to claim 1, wherein the communication terminal is a transceiver that performs voice communication.
The test support jig according to claim 1, wherein the test support jig is used for a sensor test of a fire alarm facility.

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