JP2014144208A - Nurse call system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nurse call system which dispenses with another setting work even when a wireless call button is moved with a bed.SOLUTION: Each nurse call slave machine comprises: a wireless call button 1 for wirelessly originating a call signal; and a receiver 2 which is fixedly installed near a bed, comprises a reception unit for receiving the call signal, and transmits via a cable the received call signal to a nurse call master machine 5. While the wireless call button 1 regularly originates its own ID information, the reception unit of the receiver 2 measures the radio field intensity of the received ID information, and a receiver CPU selects, as a reception target, one wireless call button 1 originating the most intense radiowaves and registers it to a controller 6.

Description

  The present invention relates to a nurse call system for a patient or a cared person to call a nurse or a caregiver in a hospital, a care facility, or the like.

The nurse call system has a nurse call cordless handset equipped with a call button for calling a nurse for each bed, but the call button is connected to a plate cordless handset installed on the wall by a connecting line and the bed call etc. Therefore, the connection line may be pulled due to the movement of the bed, the patient's rising operation, or the like, causing disconnection or damage to the connector part.
For this reason, a configuration in which the call button is wireless is proposed. For example, in Patent Document 1, a nurse call slave unit configured to perform polling call on a call button from a plate slave unit installed on a wall surface at a certain period and recognize a pressing operation of the call button from this response signal. Is disclosed.

JP 2006-95038 A

The nurse call cordless handset of the above-mentioned patent document 1 can prevent disconnection of the call button and breakage of the connector during movement of the bed and the like by making the call button wireless, and can improve convenience.
However, by making the call button wireless, pairing work with the plate slave unit is required, and the troublesome work of manually setting has occurred. Therefore, when the call button moves with the movement of the bed, a new pairing operation is required with the destination plate slave unit, and the pairing with the plate slave unit used before the move is canceled. It was also necessary to work.

  In view of the above problems, an object of the present invention is to provide a nurse call system in which a new setting operation does not occur even when a wireless call button is moved together with a bed.

In order to solve the above-mentioned problems, the invention of claim 1 includes a nurse call cordless handset installed for each bed for a patient to call and talk to a nurse, and a nurse call corded handset installed in a nurse station. A nurse call system having a nurse call master for responding to a call and a controller for controlling communication between the nurse call slave and the nurse call master, wherein the nurse call slave receives a call signal A wireless call button for wireless transmission, and a reception device that is fixedly installed in the vicinity of the bed and that receives a call signal, and has a receiving device for wired transmission of the received call signal to the nurse call parent device. Has an ID signal generation unit that periodically transmits its own ID information, while the receiving device measures a radio wave intensity of the received ID information, and the strongest received radio wave 1 And having a call button selection unit that selects a wireless call button as a reception target.
According to this configuration, since the wireless call button periodically transmits its own ID signal and the reception device receives it, the reception device displays the state of the wireless call button to be received even when the wireless call button is not operated. Can be recognized. Since the radio call button to be received is selected on the basis of the received radio wave intensity information, if the radio call button is moved by moving the bed or the like, it can be recognized from the decrease of the radio wave intensity. Once recognized, it can be controlled to automatically change the reception target, and the work of separately setting the pairing between the radio call button and the receiving device can be eliminated.

According to a second aspect of the present invention, in the configuration according to the first aspect, the receiving device transmits the ID information of the radio call button selected as the reception target and the received radio wave intensity information to the controller as pairing information. On the other hand, the controller includes an information transmission unit, a slave unit information storage unit that registers pairing information received from each receiving device, and a pairing determining unit that determines whether or not pairing between the radio call button and the receiving device is possible. The pairing determination means monitors the occurrence of overlapping pairing of the radio call buttons from the received pairing information, and when the overlapping pairing occurs, leaves the pairing with the strongest received radio wave strength, The pairing is disabled and the selection of the radio call button is canceled.
According to this configuration, it is possible to prevent a plurality of receiving devices from pairing with one radio call button. Therefore, it is possible to prevent a situation in which the nurse call slave unit that is away from the radio call button at the time of answering forms a communication path, and to operate each radio call button satisfactorily.

According to a third aspect of the present invention, in the configuration of the second aspect, when the pairing determining means determines that there is no duplication in the wireless call button of the pairing information, the pairing determining means transmits an authentication signal to the corresponding receiving device, and the wireless call button Alternatively, the receiving apparatus includes an authentication display unit that receives an authentication signal and notifies pairing authentication.
According to this configuration, since the display unit can recognize that the wireless call button operates normally, even if the pairing of the wireless call button and the receiving device is changed due to bed movement or the like, the pairing authentication of the authentication display unit The wireless call button can be used without worrying about the notification operation.

According to a fourth aspect of the present invention, in the configuration according to the second or third aspect, when the slave unit information transmitting unit cannot receive the ID information of the selected radio call button, the selection cancel signal is transmitted to the control unit, and the control is performed. In response to the selection cancellation signal, the machine deletes the registered pairing information.
According to this configuration, pairing is automatically canceled when the radio call button is moved away from the receiving device by moving the bed, etc., so there is no need for separate cancellation operation even if a plate slave unit that is not used occurs, and when new pairing is set No comparison is required.

According to a fifth aspect of the present invention, in the configuration of the fourth aspect, the pairing determining means receives a selection cancellation signal from the receiving device and deletes the pairing information, and then a new pairing is performed even if a predetermined time has elapsed. If the information is not transmitted, a warning signal for notifying the occurrence of the radio call button abnormality is transmitted to the receiving apparatus, and the reception apparatus receives the warning signal and notifies the occurrence of the radio call button abnormality by sounding or displaying. An abnormality occurrence notification unit is provided.
According to this configuration, when a battery runs out or a failure occurs in the wireless call button, the notification is made so that a nurse or the like can easily recognize it and the reliability of the system is improved.

According to a sixth aspect of the present invention, in the configuration according to the fourth or fifth aspect, the pairing determining means changes the stored pairing information, and the ID of the radio call button registered so far is assigned to any receiving device. Is not selected, an unknown occurrence signal for notifying the unknown of the radio call button is transmitted to the receiving apparatus selected immediately before, while the receiving apparatus receives the unknown occurrence signal and receives an unknown radio call. It has an unknown notification part which notifies generation | occurrence | production of a button by a report sound or a display.
According to this configuration, when a radio call button that becomes unknown is generated, it is notified so that the radio call button can be easily managed.

  According to the present invention, since the wireless call button periodically transmits its own ID signal and the reception device receives the ID signal, the state of the wireless call button to be received can be displayed even if the wireless call button is not operated. Can be grasped. Since the radio call button to be received is selected on the basis of the received radio wave intensity information, if the radio call button is moved by moving the bed or the like, it can be recognized from the decrease of the radio wave intensity. Once recognized, it can be controlled to automatically change the reception target, and the work of separately setting the pairing between the radio call button and the receiving device can be eliminated.

It is a block diagram which shows an example of the nurse call system which concerns on this invention. It is a circuit block diagram of a radio call button. It is a circuit block diagram of a receiver. It is a circuit block diagram of a controller. It is a flowchart which shows the flow which registers a radio call button. It is explanatory drawing which shows the relationship between the radio wave of a radio call button, and the radio field intensity which a receiver receives.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below in detail with reference to the drawings. FIG. 1 is a configuration diagram showing an example of a nurse call system according to the present invention, and shows a case where it is installed in a hospital. In FIG. 1, 1 is a radio call button that is arranged for each bed so that a patient calls a nurse, 2 is a receiving device that receives radio waves transmitted by the radio call button 1, and 3 is installed on a wall near each bed Plate slave unit 4 connected to the receiving device 2, 4 is installed at the entrance of the hospital room, and a corridor lamp for displaying the occurrence of the call, 5 is a nurse call installed at the nurse station to answer the call from the patient The master unit 6 is a control unit that controls communication between the plate slave unit 3 and the nurse call master unit 5. The wireless call button 1, the receiver 2, and the plate slave unit 3 call the nurse to make a call. A nurse call handset 7 is provided.

  The receiving device 2 is connected to the plate slave unit 3, and each plate slave unit 3 is connected to the corridor lamp 4 by a transmission line L1 for each hospital room. The corridor lamp 4 is connected to the controller 6 by the corridor lamp trunk line L2, and the controller 6 is connected to the nurse call master unit 5 by the master trunk line L3.

  The radio call button 1 is configured as shown in the circuit block diagram of FIG. 2, and includes an antenna 11 that transmits a call signal and the like, a radio unit 12 that generates and modulates a call signal, a button unit 13 that generates a call signal, a battery, and the like. And a display unit 15 for displaying a power supply state, a call button CPU 16 for controlling the entire radio call button, and the like. When the button unit 13 is pressed by an operator such as a patient, a call signal is output from the wireless unit 12 and transmitted via the antenna 11 under the control of the call button CPU 16. In addition, the ID information of the radio unit 12 is output from the radio unit 12 at regular time intervals under the control of the call button CPU 16 and is transmitted via the antenna 11.

  The receiving device 2 is configured as shown in the circuit block diagram of FIG. 3, and performs an antenna 21 for receiving a call signal transmitted from the radio call button 1, a demodulation process for the received signal, and a calculation of a radio wave intensity (RSSI value). In order to communicate with the receiving unit 22 to be implemented, the display unit 23 for notifying the occurrence of abnormality, etc. by the light emission of the LED, the ID storage unit 24 for storing the ID information of the selected wireless call button 1, and the plate slave unit 3 connected by wire. Interface (receiver IF) 25, a power supply unit 26 that receives power from the plate slave unit 3 to generate a drive voltage of the receiver unit 2, and a plurality of radio calls that receive radio wave intensity information output from the receiver unit 22 A receiving device CPU 27 and the like for selecting and controlling one radio call button 1 to be received from the ID information of the button 1 and controlling the entire receiving device are provided.

  The plate slave unit 3 has an outlet 3a to which a conventional wired call button is connected, and the receiving device 2 is connected to the outlet. Then, a microphone 3b and a speaker 3c (shown in FIG. 1) are provided for the patient and the patient to answer the call and answer the call.

  The corridor lamp 4 includes a display lamp 4a that displays the occurrence of a call from the nurse call handset 7, and a patient information display section 4b that displays a patient name and the like. In addition, the nurse call master unit 5 includes a first master unit 51 having a sound report unit 5a for reporting the occurrence of a call, a handset 5b for responding, etc., display of detailed patient information, and setting of a nurse team. And the second master unit 52 composed of a personal computer for performing various settings.

  The controller 6 is configured as shown in the circuit block diagram of FIG. 4, and includes a slave unit information storage unit 61 that stores pairing information and the like described later, and a patient / nurse information storage unit 62 that stores patient information and nurse information. A controller CPU 63 that controls communication between the nurse call slave unit 7 and the nurse call master unit 5 and controls the entire controller 6, a corridor lamp 4, a controller IF 64 that communicates with the nurse call master unit 5, and the like.

  Next, the operation of the nurse call system configured as described above will be described. However, the operation of pressing the wireless call button 1 to call the nurse and responding to the call from the nurse call master unit 5 is the same as the conventional operation, so the description is omitted and the receiving device 2 receives the call. A pairing control operation for selecting the target radio call button 1 will be described. When this pairing is performed, the call operation by the wireless call button 1 becomes possible.

  The wireless call button 1 transmits its own ID information periodically (for example, at intervals of 5 seconds) under the control of the call button CPU 16, and the receiving device 2 receives this ID information and receives the radio wave of the received ID signal. The wireless call button 1 whose strength satisfies a predetermined condition is set as a reception target. The pairing information, which is the reception target information set in this way, is registered in the controller 6.

Specifically, description will be made based on the flowchart of FIG. First, the pairing information of each receiving device 2 to be received is stored in the handset information storage unit 61 of the controller 6. For example, it is assumed that x is stored as the ID and RSSI value X [dBm], which is the radio wave intensity information, is stored together (S1).
Thereafter, the receiving device 2 continues to receive the ID information periodically transmitted by the wireless call button 1, and outputs the received ID information and the radio wave intensity information measured by the receiving unit 22 to the receiving device CPU 27 (S2). When a predetermined fixed period (for example, 30 seconds) elapses (Yes in S3), the receiving device CPU 27 receives the radio waves of the ID information x1, x2, x3,. The intensity information X1, X2, X3,... [DBm] is compared to select the ID whose received radio wave intensity has the maximum value (S4), and the ID information is stored in the ID storage unit 24 to receive the wireless to be received. Register as call button 1 (S5). In addition, pairing information including the selected ID information and its own ID (receiving device number) and radio wave intensity information is transmitted to the controller 6 (S6).
The pairing information sent from the receiving device 2 is transmitted to the controller 6 via the plate slave unit 3 and the corridor lamp 4, and is registered in the slave unit information storage unit 61 under the control of the controller CPU 63. (ID information and RSSI value) is updated (S7).

FIG. 6 is an explanatory diagram showing the relationship between the radio wave transmitted from the wireless call button 1 and the radio wave intensity received by the receiving device 2, and shows a case where four beds (not shown) are arranged in a hospital room. Each bed has a radio call button 1, a receiver 2, and a plate slave unit 3, and the IDs of the four radio call buttons 1 (1a to 1d) are “001” to “004”, and the corresponding four units. The receiving device 2 will be described as first to fourth receiving devices 2a to 2d.
The wireless call button 1a with ID “001” is placed on the bed placed in front of the first receiving device 2a, and the wireless call button 1b with ID “002” is placed on the bed placed in front of the second receiving device 2b. Is placed, a radio call button 1c with ID “003” is placed on the bed placed in front of the third receiver 2c, and a radio call with ID “004” is placed on the bed placed in front of the fourth receiver 2d. Assume that the button 1d is arranged. The first receiving device 2a and at least the second receiving device 2b are arranged adjacent to each other, that is, the corresponding beds are arranged adjacent to each other.

  In this case, as shown in FIG. 6, the radio wave intensity received by the first receiving device 2a is that the ID signal transmitted by the wireless call button 1a with ID “001” is −70 [dBm], and the adjacent ID “002” The ID signal transmitted by the wireless call button 1b is −85 dBm. On the other hand, the radio field intensity received by the second receiver 2b is that the radio field intensity of the ID signal transmitted by the radio call button 1a with ID “001” is −80 [dBm], and the radio call button 1b with ID “002” The received ID signal is −75 [dBm]. The received radio wave intensity of the radio call buttons 1a and 1b with the ID “001” or ID “002” received by the third and fourth receivers 2c and 2d is very small, for example, −90 [dBm].

Accordingly, the first receiving device 2a receives the strongest radio wave from the wireless call button 1a with ID "001", and the second receiving device 2b receives the strongest radio wave from the radio call button 1b with ID "002". Is done. As a result, the radio call button 1a with ID “001” is registered as a reception target in the first reception device 2a, and the radio call button 1b with ID “002” is registered as a reception target in the second reception device 2b.
Similarly, the radio call buttons 1c and 1d with IDs “003” and “004” are selected and registered in the nearest third receiving device 2c and fourth receiving device 2d (not described in detail).

The receiving device 2 continues the registration operation at regular intervals, and transmits the changed pairing information to the controller 6 when the radio wave intensity changes and the ID to be registered is changed. The controller 6 renews the registration by rewriting the information stored in the child device information storage unit 61 with this pairing information.
However, when the wireless call button 1 is newly registered or the registration is changed, the controller CPU 63 stores the child device information to check whether there is an overlap in the pairing between the wireless call button 1 and the receiving device 2. The pairing information of the unit 61 is read and judged. If there is an overlap, the pairing with the strongest received radio wave is preferentially registered and the weaker pairing is canceled. When canceling, a cancel signal is transmitted to the corresponding receiving device 2, and if there is no overlap, an authentication signal is transmitted to the receiving device 2.

  In the receiving device 2 that has received the cancel signal, the receiving device CPU 27 controls the lighting of the display unit 23 to perform a predetermined pairing elimination display such as lighting of the red LED. On the other hand, in the receiving device 2 that has received the authentication signal, the receiving device CPU 27 controls the lighting of the display unit 23 to perform a predetermined authentication display such as lighting of a blue LED, for example.

Thus, since the radio call button 1 periodically transmits its own ID signal and the receiving device 2 receives it, the state of the radio call button 1 to be received can be changed even if the radio call button 1 is not operated. Receiving device 2 can recognize. Since the radio call button 1 to be received is selected based on the received radio wave intensity information, if the radio call button 1 is moved by moving the bed or the like, the radio call button 1 can be recognized from the decrease of the radio wave intensity. When the button 1 is recognized, it can be controlled to automatically change the reception target, and the work of separately setting the pairing between the radio call button 1 and the receiving device 2 can be eliminated.
Further, when overlapping pairing occurs, the controller 6 leaves only the pairing with the strongest received radio wave intensity and disables other pairing, so that a plurality of receiving devices 2 are associated with one radio call button 1. Can prevent pairing. Therefore, it is possible to prevent a situation in which the nurse call handset 7 away from the radio call button 1 at the time of response forms a communication path, and to operate each radio call button 1 satisfactorily.
In addition, since the display unit 23 can recognize that the wireless call button 1 operates normally, even if the pairing between the wireless call button 1 and the receiving device 2 is changed due to bed movement or the like, the pairing authentication of the authentication display unit It can recognize that it operates normally by notification operation, and can use radio call button 1 in comfort. Further, since notification is also given when pairing is canceled or when authentication is not performed, it is easy for the nurse call slave device 7 to grasp the situation.

Also, if the situation occurs when the radio wave of the ID information received by the receiving apparatus 2 is weaker than the set threshold value or there is no ID signal to be received, the ID information registered in the ID storage unit 24 is blanked out. In addition, pairing information in which the ID information and the radio wave intensity information are blank is transmitted to the controller 6. The controller 6 that has received the pairing information deletes the ID information, the receiving device number, and the radio wave intensity information that the controller CPU 63 recognizes as a selection cancellation signal and is stored in the slave unit information storage unit 61 and registers it. Delete.
In such a case, the controller CPU 63 continues to monitor this state, and if a new radio call button 1 is not registered even after a predetermined time has elapsed, a warning signal is transmitted to the receiving device 2. Receiving device 2 receiving the warning signal, receiving device CPU 27 causes display unit 23 to perform a predetermined abnormality occurrence display such as blinking and warn, and notifies wireless call button 1 that an abnormality has occurred.

  In this way, when the wireless call button 1 is moved away from the receiving device 2 by moving the bed or the like, the pairing is automatically canceled, so there is no need for a separate canceling operation even if an unused plate slave unit 3 occurs, and a new pairing setting is made. Sometimes no comparison is needed. In addition, in order to notify that there is no periodic ID signal reception, the wireless call button 1 can be notified when the battery runs out or breaks down, and nurses can easily recognize it, so the reliability of the system is improved. improves.

Further, when the registered radio call button 1 is changed, the controller CPU 63 monitors the ID of the radio call button 1 registered so far for a predetermined time, and even if the predetermined time elapses, any controller 2 receives it. If pairing is not performed, an unknown occurrence signal is transmitted to the receiving device 2 that has been paired until immediately before. The receiving device 2 that has received the unknown occurrence signal causes the receiving device CPU 27 to cause the LED of the display unit 23 to perform a light emitting operation such as a predetermined blinking that is different from the pairing elimination display and the abnormality occurrence display, and thus the unknown radio call button 1 Notify that has occurred.
As a result, when a radio call button 1 that has become unknown is generated, it is notified so that the radio call button 1 can be easily managed.

In the above embodiment, the display unit 23 of the receiving device 2 is configured to notify by light emission of the LED. However, a buzzer may be incorporated to notify the occurrence of an abnormality by an alarm sound, an LCD for displaying a message, or the like. The abnormality content may be displayed by characters.
When the controller 6 notifies the receiving device 2 of the pairing authentication, the display unit 23 of the receiving device 2 displays it, but the receiving device 2 further notifies the wireless call button 1 to notify the wireless call. You may notify by the display of the display part 15 of the button 1. FIG.
Further, the receiving device 2 is supplied with power from the plate slave unit 3, but may be independently supplied with power from a commercial power source, or may be driven by a battery as with the wireless call button 1. .
The nurse call system applied to a hospital has been described. The nurse call system can also be applied to a care facility. In this case, the wireless call button is used when a non-caregiver calls a caregiver.

  1 .... Wireless call button 2 .... Receiving device 3 .... Plate slave unit 4 .... Corridor lamp 5 .... Nurse call master unit 6 ... Control unit 7 ... Nurse call slave unit 12. · Wireless unit (ID signal generation unit), 13 · · · button unit, 16 · · Call button CPU, 22 · · Reception unit (radio wave measurement unit), 23 · · Display unit (authentication display unit, abnormality occurrence notification unit, unknown) Notification unit), 27... Reception device CPU (call button selection unit, slave unit information transmission unit), 61.. Slave unit information storage unit, 63... Controller CPU (pairing determination means).

Claims (6)

A nurse call cordless handset installed for each bed for a patient to call a nurse to make a call, a nurse call master set for answering a call from the nurse call corded handset installed in a nurse station, and the nurse A nurse call system having a controller for controlling communication between a call slave and a nurse call master,
The nurse call slave device includes a wireless call button for wirelessly transmitting a call signal and a receiving unit that is fixedly installed near the bed and receives the call signal, and wire-transmits the received call signal to the nurse call parent device. And a receiving device for
The wireless call button includes an ID signal generation unit that periodically transmits its own ID information, while the receiving device measures a radio wave intensity of the received ID information and has the strongest received radio wave 1 A nurse call system, comprising: a call button selection unit that selects a radio call button of a table as a reception target. While the receiving device has a slave unit information transmission unit that transmits the ID information of the radio call button selected as a reception target and the received radio wave intensity information to the controller as pairing information,
The controller includes a handset information storage unit that registers the pairing information received from each receiving device, and a pairing determining unit that determines whether or not pairing between the radio call button and the receiving device is possible. ,
The pairing determination means monitors the occurrence of overlapping pairing of radio call buttons from the received pairing information, and when the overlapping pairing occurs, leaves the pairing having the strongest received radio wave intensity, The nurse call system according to claim 1, wherein selection of a radio call button is canceled by disabling the call. The pairing determination means transmits an authentication signal to the corresponding receiving device when it is determined that there is no duplication in the radio call button of the pairing information,
The nurse call system according to claim 2, wherein the wireless call button or the receiving device includes an authentication display unit that receives the authentication signal and notifies pairing authentication. When the ID information of the selected radio call button cannot be received, the slave unit information transmission unit transmits a selection release signal to the controller,
4. The nurse call system according to claim 2, wherein the controller receives the selection cancellation signal and deletes the registered pairing information. 5. The pairing determination means receives the selection cancellation signal from the receiving device, deletes the pairing information, and if new pairing information is not transmitted even after a predetermined time has passed, Send a warning signal to notify the occurrence of an abnormal radio call button,
The nurse call system according to claim 4, wherein the reception device includes an abnormality occurrence notification unit that receives the warning signal and notifies the occurrence of an abnormality of a radio call button by a sound report or a display. When the stored pairing information has been changed and the ID of the radio call button registered so far has not been selected by any of the receiving devices, the pairing determination means has selected until just before While transmitting an unknown occurrence signal to notify the receiver of the unknown radio call button,
6. The nurse call system according to claim 4 or 5, wherein the receiving device includes an unknown notification unit that receives the unknown occurrence signal and notifies the occurrence of an unknown wireless call button by sounding or displaying.

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