JP2649035B2 - Emergency call device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an improvement of an emergency notification device that reports an abnormal situation such as a fire or an intrusion using a telephone line.

[Background Art] This type of emergency reporting device is configured by connecting a transmitting device and a receiving device using a telephone round. The transmitting device is provided with a sensor device such as a heat detector and a security switch, and when these sensor devices detect an abnormal situation,
Abnormality information is transmitted to the receiving device side via a telephone line to notify an emergency.

By the way, such an emergency notification device is required to have high reliability. However, since the amount of signal attenuation due to the telephone line changes depending on the environment such as the season and the weather, the measurement of the amount of attenuation of the telephone line is an emergency report. It is usually performed at the time of installation of the apparatus or after the installation of the system, and the signal transmission level of the transmission apparatus is adjusted each time. For example, in the related art, a transmitting device and a receiving device are separated from a telephone line, and a level generator and a level measuring device are connected to both sides of the line instead.

[Object of the Invention] The present invention has been made in view of such problems, and an object of the present invention is to adjust a signal level transmitted and received between a transmitting device connected through a telephone line and a receiving device. An object of the present invention is to provide an emergency notification device in which a test signal is directly transmitted to the other party to perform the measurement automatically, and the measurement result is displayed and grasped on both sides in order to easily and accurately perform the measurement.

DISCLOSURE OF THE INVENTION The present invention proposed to achieve the above object is an emergency notification device that performs signal transmission between a transmitting device and a receiving device via a telephone line, and each of the transmitting device and the receiving device Has the following configuration.

The transmitting device is provided with a telephone, a calling signal generating means for dialing and calling the receiving device through the telephone line, and when the called receiving device receives a call,
A measurement command signal is transmitted, and when a response signal is received from the receiving device with respect to the measurement command signal, a measurement signal generating unit that transmits a measurement signal for a test, and the measurement command signal is transmitted from the reception device to the measurement command signal. A non-response display means for displaying when the response signal cannot be detected, a signal level information display means for receiving and displaying the level information of the measurement signal test-measured by the receiving apparatus from the receiving apparatus, Output level adjusting means for adjusting the output level of the signal is provided at least.

One of the receiving devices is equipped with a telephone and automatically receives an incoming call in response to a call from the transmitting device, and generates a response signal that returns a response signal when receiving a measurement command signal transmitted from the transmitting device. Means, a reception level measuring means for receiving a measurement command signal transmitted from the transmission device, and subsequently measuring a reception level of a measurement signal transmitted from the transmission device, and a measurement result measured by the reception level measurement means. It has a configuration including at least measurement result display means for displaying, and level information control signal sending means for sending a level information control signal indicating the reception level of the measurement signal measured by the reception level measurement means to the transmitting device. ing.

[Embodiment] Fig. 1 shows the configuration of the emergency notification device of the present invention.

FIG. 2 is a block diagram showing one embodiment of the emergency notification device according to the present invention.

The emergency notification device according to the present embodiment includes a transmission device 1 and a reception device 2 having substantially the same configuration, and signal transmission between the two devices is performed via a telephone line 3.

In the transmission device 1, an abnormality detection signal from various sensor devices (not shown) such as a heat sensor is input to the monitoring input circuit 101 directly or via a receiver or the like, and the microcomputer 102
Is processed. The microcomputer 102 processes the abnormality detection signal, and generates a tone dial signal generation circuit 109.
To dial the receiving device 2 and call it through the telephone line 3. On the other hand, when the receiving device 2 receives an incoming call and the telephone line 3 is closed, it is input to a frequency modulation (FSK) type modulation / demodulation device (MODEM, hereinafter referred to as “modem”) 108. In the model 108, the binary signal output from the microcomputer 102 is modulated (1300 Hz (1), 2100 Hz
(0), the signal is input to the variable attenuator 111 via the changeover switch 110, and is transmitted to the telephone line 3 via the NCU 112 at a predetermined transmission level. The transmitting device 1 includes a telephone
An A / D converter 107 is connected between the computer 102 and the terminal b of the changeover switch 110. The computer 102 has an I / O port 103, a CPU 10
4. It has a ROM 105 and a RAM 106, and is composed of one chip. In the figure, 114 is a 16-digit liquid crystal display device, 115 is LE
D, 116 is a key input unit, 117 is a sub power supply, 118 is a transformer,
119 is a main power supply, and 120 is a backup battery.

The receiving device 2 has the same configuration as that of the transmitting device 1 except that an alarm output circuit 201 for transmitting a control signal to various alarm devices (not shown) is provided instead of the monitoring input circuit 101 of the transmitting device 1. , Similar parts are denoted by adding 2 to the first digit of a three-digit reference code, and the second and third codes are the same, and description thereof is omitted.

As described above, in the normal signal transmission state, the changeover switches 110 and 210 are closed to the terminal a, and signals are transmitted and received through the modems 108 and 208.

A method of measuring the attenuation of the telephone line according to the present embodiment having such a configuration will be described below. In this embodiment, since the configurations of the transmission device 1 and the reception device 2 are substantially the same, the transmission of the measurement signal may be performed from either device. The case of transmission will be described.

FIGS. 3 and 4 show flowcharts of the measurement procedure in this embodiment. In this embodiment, since the program of the measurement procedure is stored in the ROM 105, in a normal case, the key input unit 116 of the transmitting device 1 is operated to set the attenuation measurement mode (step 11). Is automatically advanced.

(1) In the measurement mode, the calling signal generating means is activated, and the telephone number of the receiving device 2 stored in advance is dialed (step 12).

(2) In response to this, the receiving device 2 receives a call and the telephone line 3
Is closed, the polarity of the telephone line 3 is inverted (step 22), so the transmitting device 2 detects this and sends out a measurement command signal (command) via the modem 108 and the attenuator 111 (step 13). ).

(3) Receiving the measurement command signal, the receiving apparatus 2 sends an answer signal through the modem 208 and the attenuator 211 to respond (step 24), and connects the switch 210 to the terminal b to connect the telephone line 3. The modem 307 connects to the A / D converter 207 (step 25).

(4) When the transmitting device 1 receives the answer signal from the receiving device 2, the process proceeds to step 15 (step 14). If the answer signal has not been transmitted, or even if the answer signal has been transmitted but could not be received by the transmitting device 1 due to attenuation in the middle, a message indicating that the answer signal was not received is displayed on the liquid crystal display device 114 of the unresponsive display means. (Step 20
Four). In this case, the measurement is performed by a manual operation described later.

(5) When the signal of “1” is transmitted from the CPU 104 of the transmitting apparatus 1 to the modem 108 for 5 seconds, the modem 108
A measurement signal for the test of z is transmitted to the transmission device 2 via the attenuator 111 (step 15).

(6) In the receiving device 2, the 1300 Hz measurement signal is attenuated.
The digital signal corresponding to the signal level is input to the A / D converter 207 via the 211, and the digital signal corresponding to the signal level is input to the CPU 204 to measure the level, and the result is stored in the RAM 206 (step 2).
6).

(7) Subsequently, a measurement signal of 2100 Hz corresponding to “0” is transmitted from the transmission device 1 and the same processing as in (5) and (6) is performed (steps 16 and 27).

(8) When the measurement of the measurement signal is completed in this way, the switch 210 of the receiving device 2 is switched to the terminal a, and the telephone line 3 is connected to the modem 307 again (step 2).
8).

(9) Thus, the receiving device 2 reads out the reception levels of the two measurement signals from the RAM 206, activates the level information control signal transmitting means, and transmits the level information control signal transmitting signal to the transmitting device 1 via the modem 208 ( Step 29).

(10) As a result, in both the transmitting device 1 and the receiving device 2, the liquid crystal display devices 114 and 214 of the signal level information display means and the measurement result display means respectively first increase the reception level of the 1300 Hz measurement signal as follows, for example. (Steps 18, 30).

"1300Hz XX.XdB" Subsequently, when key input section 116 is operated, the reception level of 2100Hz is displayed as "2100Hz XX.XdB". XX.X is a numerical value of the reception level.

(11) When the measurement result is displayed by both the signal level information display means and the measurement result display means in this way, the telephone line 3 is opened (steps 19 and 31), and both devices 1, 2 return to the normal state. Return.

 Next, a measurement procedure by manual operation will be described.

(12) The transmitting device 1 uses the telephone 113 to call the telephone 213 of the receiving device 2 (step 32), and informs the receiving signal 2 that they will transmit a measurement signal (step 38).

(13) The key input units 116 and 216 are operated to switch the measurement mode to the measurement mode for both (steps 33 and 39).

(14) As a result, the changeover switch 210 of the receiving device 2 is connected to the terminal b, and the telephone line 3 is connected to the A / D converter 207 (step 25).

(15) A procedure similar to the above (5) to (8) is performed (steps 34, 35, 41, 42).

(16) The switch 210 is switched to the terminal a side, and the telephone line 3 is connected to the modem 208 again (step 43).

(17) The liquid crystal display unit 214 of the measurement result display unit of the receiving device 2
Is displayed as in (10) (step 44).

(18) On the receiving device 2 side, these displayed values are communicated to the transmitting device 1 by the telephone 213 (steps 45 and 3).
6).

(19) The telephone line 3 is released (steps 37 and 46), and the measurement is completed.

Based on the reception level value of the measurement signal obtained by this measurement, the attenuator 11 of the output level adjustment means of the transmission device 1
Appropriate measures are taken, such as adjusting the transmission level of 1 and correcting the malfunction of the telephone line 3.

When a measurement signal is transmitted from the receiving device 2 to the transmitting device 1 for measurement, the procedure is performed in the reverse procedure.

For convenience of explanation, the embodiment provided with one transmitting device 1 and one receiving device 2 has been described, but the emergency reporting device of the present invention is an emergency reporting device having a plurality of transmitting devices. Needless to say, it can be applied to

[Effects of the Invention] As is clear from the above description, in the emergency notification device of the present invention, the attenuation of the telephone line can be reduced without preparing a special measuring device or disconnecting the transmitting device and the receiving device from the telephone line. The measurement can be performed extremely easily and in a short time, and the reliability of the emergency notification device can be improved.

When measuring the signal level, one device (transmitting side) is set to the automatic measurement mode, and when the measurement is started, the other device (receiving side) is called, and the reception of the transmitted measurement command signal is answered by an answer. After being confirmed by the signal, the measurement signal is sent out, and the attenuation level of the measurement signal is displayed on both the one device and the other device, so that the degree of attenuation can be directly grasped between the communication partner devices. , Is convenient.

Furthermore, since the transmitting side confirms the state of the receiving side by the answer signal, the measurement test is performed,
Even when a trouble occurs on the receiving side or when the answer signal cannot be returned from the receiving side due to bad line conditions, the measurement test can be performed by switching from the automatic measurement mode to the manual measurement mode, so that flexibility is good.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an emergency notification device according to the present invention, FIG. 2 is a block diagram of one embodiment, and FIGS. 3 and 4 are flowcharts showing a procedure for measuring an amount of attenuation according to the embodiment. . DESCRIPTION OF SYMBOLS 1 ... Transmitting apparatus 2 ... Receiving apparatus 3 ... Telephone line 102, 202 ... Microcomputer 107, 207 ... A / D converter 108, 208 ... Modem 110, 210 ... Changeover switch 111, 211 ... Attenuation Devices 113, 213 Phones 114, 214 Liquid crystal display devices 115, 215 Key input unit

Claims (1)

(57) [Claims] An emergency notification device for transmitting a signal between a transmitting device and a receiving device through a telephone line, wherein the transmitting device is provided with a telephone, and the receiving device is dialed through the telephone line. A calling signal generating means for calling, a measuring command signal is transmitted when the signal arrives at the called receiving device, and when a response signal is received from the receiving device in response to the measuring command signal, the measuring signal for the test is transmitted. Means for generating measurement signal to be transmitted; means for displaying no response signal from the receiving apparatus in response to the measurement command signal, indicating the fact; and the level of the measuring signal test-measured by the receiving apparatus. At least signal level information display means for receiving and displaying information from the receiving device, and output level adjusting means for adjusting the output level of the transmission signal; The communication device has a telephone, response signal generating means for automatically receiving a call in response to a call from the transmission device, and returning a response signal when receiving the measurement command signal transmitted from the transmission device. Receiving level measurement means for receiving a measurement command signal transmitted from the transmission device and subsequently measuring a reception level of a measurement signal transmitted from the transmission device; and displaying a measurement result measured by the reception level measurement means. Measurement result display means, and at least level information control signal transmission means for transmitting a level information control signal indicating the reception level of the measurement signal measured by the reception level measurement means to the transmission device, Emergency call device.