JP2788903B2 - Emergency call system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in, for example, a factory having a large space and the like. And an emergency call system including the base station.

[0002]

2. Description of the Related Art In a factory or the like having a large space, an emergency notification system is often adopted so that a worker working there can be notified that an abnormality has occurred. A conventional emergency notification system can carry an emergency notification signal from a mobile terminal carried by an operator and transmitting an emergency notification signal when an abnormality occurs in the worker, and the like, and can receive an emergency notification signal from the mobile terminal. And a plurality of base stations that transmit an abnormality occurrence signal including reception sensitivity information obtained by converting the emergency notification signal and its reception sensitivity into data, and a base station that receives the emergency notification signal. And a master unit having a monitoring console for monitoring the transmission of the abnormality occurrence signal.

[0003] The master unit is arranged in a monitoring room or the like provided at a position distant from the work area, and a dedicated monitor constantly monitors the occurrence of an abnormality displayed on a monitoring console, and the abnormality occurs. In some cases, we can deal with it.

In the above system, when an emergency notification signal is transmitted from a mobile terminal, the emergency notification signal is received by a plurality of base stations within a receivable range. An abnormality occurrence signal including reception sensitivity information obtained by converting the reception sensitivity of the received emergency notification signal into data is transmitted to the master unit.

[0005] Based on the abnormality occurrence signal transmitted from each base station, the master unit displays an emergency notification signal and reception sensitivity information on a monitoring console in descending order of reception sensitivity. With this display,
After confirming that an abnormality has occurred in the worker and its position, the observer rushes there.

[0006]

However, in the above-mentioned conventional system, since the work area and the monitoring room are far apart, after the observer notices the abnormality of the worker, the worker confirms and secures the worker. It takes a long time to make a quick response.

Further, since the workers must be monitored at all times, a dedicated supervisor is required, and a master unit for monitoring and a monitoring room for installing the same must be installed. However, there are disadvantages in that the configuration of the entire system becomes complicated, and the capital investment cost and the running cost increase.

The present invention makes it possible to easily confirm the position of a mobile terminal that is transmitting an emergency notification signal, to deal with the occurrence of an abnormality in a short time, to simplify the system configuration, and to reduce the cost. An emergency call system is provided.

[0009]

According to a first aspect of the present invention, there is provided an emergency call system, wherein each base station converts an emergency call signal received by itself into reception intensity level data according to the reception intensity thereof. And a transmitting unit 2 for transmitting the reception intensity level data to another base station, and comparing the reception intensity level data of the emergency notification signal received by itself with the reception intensity level data transmitted from the other base station. Then, it is configured to include a comparison recognition unit 3 for recognizing its own relative ranking and an alarm unit 4 for issuing an alarm corresponding to the recognized own ranking.

In the emergency notification system according to the second aspect, the alarm unit 4 is provided with a plurality of lamps 5a to 5c which are turned on in accordance with the order of the reception intensity level data.

In the emergency notification system according to a third aspect of the present invention, the alarm unit 4 is configured to emit an alarm by sound while turning on the lamps 5a to 5c corresponding to the order of the reception intensity level data.

[0012]

Embodiments of the present invention will be described with reference to the drawings. The emergency notification system according to the present invention is configured to notify an abnormality occurring in a worker working in a factory or the like in a large space to surrounding workers, for example, as shown in FIG. The portable terminal A which transmits the emergency notification signal by operation of the worker or automatically when an abnormality occurs, and notifies the occurrence of the abnormality based on the received emergency notification signal, for example, 3 It consists of base stations B1 to B3.

[0013] The base stations B1 to B3 have the same configuration, and they transmit an emergency notification signal transmitted from the mobile terminal A.
A receiving unit 1 that converts the signal into reception intensity level data in accordance with the reception intensity of the signal, a transmission unit 2 that transmits the reception intensity level data converted by the reception unit 1 to each of the other base stations, and a later-described one It has a comparison recognition unit 3 and an alarm unit 4.

[0014] The comparison recognition unit 3 receives reception intensity level data transmitted from another base station that has received the same emergency notification signal via the wired line c, and reception intensity level data of the emergency notification signal received by itself. And a recognizing unit 3b.

The recognizing unit 3b recognizes and recognizes the relative strength ranking of the received strength level data of the emergency call signal received by itself based on the comparison result of the received strength level data of the other unit by the comparing unit 3a. It outputs its own strength ranking to the alarm unit 5. That is, the difference in the reception intensity level corresponds to the difference in the distance between the mobile terminal A and each of the base stations B1 to B3. Therefore, for example, if the reception intensity level of the emergency notification signal received by the base station B1 is the highest and the reception intensity level is lower in the order of the base stations B2 and B3, the base station B1 will It can be recognized that the mobile terminal A is located in the vicinity, and then in the order of the base stations B2 and B3, whereby the position of the mobile terminal A that has transmitted the emergency notification signal can be specified.

The alarm unit 4 includes an alarm lamp unit 5 having a plurality of lamps that are turned on in accordance with the intensity order of the received intensity level data, and an audio alarm that issues an audio alert when the intensity order is the highest. 6. Note that the audio alarm unit 6 may issue an alarm regardless of the strength ranking.

The alarm lamp unit 5 is provided with, for example, three lamps 5a to 5c which light up in red, yellow and green, respectively, so that the lamp corresponding to its own intensity order sent from the recognition unit 3b lights up. It has become. For example, if its own strength ranking is the highest, it is the closest to the mobile terminal transmitting the emergency call signal, so it is easy to intuitively recognize that there is an abnormality. The lamp 5b is lit in yellow if there is any, and the lamp 5c is lit in green if it is the third. Note that the number and color of the lamps may be appropriately set in consideration of the number of base stations installed, the arrival area of the emergency notification signal transmitted from the mobile terminal, and the like.

In the above-described emergency notification system, when the three base stations B1 to B3 receive the emergency notification signals transmitted from the specific mobile terminal A, respectively, the base stations B1 to B3 respectively transmit the other emergency notification signals. The base station compares the emergency notification signal received by the base station with the reception level data, turns on a lamp of a color corresponding to its own reception intensity level, and issues an audio warning.

Surrounding workers can easily identify the position of the mobile terminal A that is transmitting the emergency notification signal from the difference in the color of the lamp of each base station that has issued an alarm, and an abnormality has occurred. It is possible to promptly deal with workers.

The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the invention. The transmission unit described above is an example in which the reception intensity level data converted by the reception unit is transmitted to each of the other base stations via a wired line, but the reception intensity level data is transmitted over a wireless line. It may be transmitted to each of the other base stations via the base station.

Also, the comparison recognition unit 3 has been described in which the reception intensity level data from another base station receiving the same emergency notification signal is received via the wired line c. You may make it.

[0022]

According to the first to third aspects of the present invention, the base station can identify and warn the difference in the distance to the mobile terminal that is making an emergency call. Can be reached in a short period of time, and prompt measures can be taken.

It is not necessary to have a dedicated supervisor, and there is no need to provide a master unit having a monitoring console or a monitoring room for installing the same. Therefore, it is possible to simplify the entire system and reduce costs. it can.

According to the second and third aspects of the present invention, the position of the mobile terminal transmitting the emergency notification signal can be specified from the difference in the color of the lamp lit at each base station. The position of the worker who is awake can be easily confirmed.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing an overall configuration of an emergency call system according to the present invention.

FIG. 2 is a block diagram illustrating a configuration of each base station.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receiving part 2 Transmitting part 3 Comparative recognition part 4 Alarm part 5a-5c Lamp A Mobile terminal B1-B3 Base station

Claims (3)

(57) [Claims] 1. An emergency notification system comprising a mobile terminal that wirelessly transmits an emergency notification signal and a plurality of base stations that can receive the emergency notification signal, wherein each base station includes:
A receiving unit that converts the emergency notification signal received by itself into reception intensity level data according to the reception intensity thereof; a transmission unit that transmits the reception intensity level data to another base station; A comparison / recognition unit that compares the received strength level data of the emergency call signal and the received strength level data transmitted from another base station to recognize its own relative rank, and corresponds to the recognized rank of itself. And an alarm unit for issuing an alarm. 2. The alarm section includes a plurality of lamps that are turned on in accordance with the order of the reception intensity level data.
Emergency call system described. 3. The emergency notification system according to claim 2, wherein the alarm unit emits an audio alarm together with lighting of a lamp corresponding to the order of the reception intensity level data.