JP2005253805A - Motion control device of electric bed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motion control device of an electric bed capable of easily setting the back raising position, the knee raising position and the height of the bed recommended by a nurse or specialist in the care-taking as the most suitable for reducing the nursing or care-taking work and facilitating the self-standing of a patient. <P>SOLUTION: A hand switch 4 has a recommendation switch for setting a recommended value on the angle of raising of a back bottom and a knee bottom and the height of a frame. When the patient or the care-taker presses the recommendation switch in the hand switch 4, the signal is inputted from the hand switch 4 to an MPU 1, and the MPU 1 reads the recommended values of the angle of back raising, the angle of knee raising and the height of the frame (bed) from a memory element 3. Then, the MPU 1 outputs control signals based on the recommended values to chopper parts 6, 7 and relay parts 10 and 11, and drives driving parts 12 and 13 in a prescribed direction to perform the back-raising, back-lowering, knee-raising, knee-lowering, frame-raising or frame-lowering motion. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an operation control device for an electric bed that controls the back-and-forth movement of a medical bed or a nursing bed, the movement of raising and lowering the knee, and the movement of the whole bed.

  The bed for medical or nursing care needs to change the posture of the patient or increase the height of the whole bed in order to reduce the burden of treatment or nursing work, or to maintain or improve the independence of the elderly or the disabled. In order to be able to change, the inclination angle of the back bottom and the knee bottom can be changed, and the height of the bed floor can be changed.

JP 2001-37820 A

  However, particularly in the case of a home bed, a patient or a caregiver operates the switch using a remote controller to perform a back raising operation and a knee raising operation, a floor raising operation, and a back lowering operation and a knee. The lowering operation and the floor lowering operation are performed, the back angle and the knee angle are adjusted, and the height of the entire bed is adjusted. In this case, even if a patient or a person who does not specialize in nursing or nursing, such as a family caregiver, adjusts the back-up angle, knee-up angle, bed height, etc. of the electric bed, There is a problem that it does not become an attitude that can effectively achieve the purpose of the electric bed for promoting independence.

  In addition, there is an electric bed that can be adjusted to the stored bed posture by storing a predetermined angle of the back and knees in the control device of the electric bed and pressing a predetermined switch. However, the setting of the predetermined angles such as the back and knees is performed by a caregiver, and eventually a person who does not specialize in nursing or nursing care has a back-up angle of the electric bed, a knee-up angle, a bed height, etc. It is no different from adjusting.

  The present invention has been made in view of such a problem, and is recommended for a nursing or care professional to be most preferable for reduction of nursing or care work and promotion of independence. Another object of the present invention is to provide an operation control device for an electric bed that can be easily set.

  An operation control device for an electric bed according to the present invention includes a bottom drive member that moves up and down at least one of a back bottom and a knee bottom that are attached to a frame so as to be tiltable, and a frame drive member that drives the frame up and down. And an electric bed operation control device for operating the bottom or frame of the bed by driving the bottom driving member or the frame driving member by a signal from a remote control switch or a fixed switch, and is driven by the bottom driving member. A storage device for storing a predetermined angle of the back bottom and / or knee bottom and a predetermined height position of the frame, and input of a recommended operation start signal from the remote control switch or fixed switch, the back bottom and / or knee This is controlled so that the bottom and the frame are at the predetermined angle and the predetermined height, respectively. And a control unit.

  In this case, in the control unit, the control range is provided for the angle and height of the back bottom and / or knee bottom and the frame, respectively, and an operation start signal is input from the remote control switch or the fixed switch. In this case, the back bottom and / or the knee bottom and the frame can be driven and controlled within the restriction range.

  According to the present invention, when a caregiver of a patient who uses a home bed presses a recommended switch such as a remote control switch of an electric bed, a recommended value stored in advance in a storage element is read, and the drive unit Since the angle and height of the knee bottom and the frame are controlled so as to match the predetermined recommended values, even if there is no nursing or nursing expertise, the posture of the electric bed can be reduced for nursing or nursing load and patients It is possible to obtain an optimum posture for promoting independence. For this reason, even when the person who does not have specialized knowledge operates the function which an electric bed inherently has, it can be exhibited effectively.

  The control unit may be configured such that the back bottom and / or the knee bottom and the frame are not driven beyond the angle and height regulation ranges, respectively. Accordingly, a person having specialized knowledge can set such a regulation range in advance according to the physical condition of the user, and it becomes even easier for a person without specialized knowledge to obtain an optimal posture.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings. In the electric bed to which the motion control device of the present invention is applied, the frame has a back bottom on which a portion corresponding to the upper body of the patient rests, a waist bottom on which a portion corresponding to the waist rests, and a portion corresponding to the thigh. A knee bottom, a foot bottom on which a portion corresponding to a shin is placed, and a mattress is installed on the back bottom, the waist bottom, the knee bottom, and the foot bottom. Among the bottoms, the back bottom, the knee bottom, and the foot bottom are provided on the frame so that the angle with respect to the frame can be changed, and the back bottom and the knee bottom are driven to swing by an actuator. Usually, the foot bottom swings in conjunction with the swing of the knee bottom. The waist bottom is usually fixed to the frame. The frame is raised and lowered by a link mechanism, and the raising and lowering of the frame is also driven by an actuator. The electric bed is not limited to the structure described above, and there are various types of electric beds. For example, there is a type in which only the back bottom is driven up and down. In this case, there is no knee bottom drive in the following description.

  FIG. 1 is a block diagram showing an operation control device for an electric bed according to an embodiment of the present invention. In FIG. 1, a drive unit 12 is a drive unit for raising and lowering the back bottom, and the drive unit for the knee bottom has the same configuration, but is not shown in FIG. The drive unit 13 is used to drive the frame up and down. A MPU (Central Processing Unit) 1 is connected to a hand switch (remote control switch) 4, a serial / parallel signal input / output terminal 2 connected to an external input, and an electrically erasable / writable read only memory (EEPROM) 3. Has been. The EEPROM 3 stores recommended values or recommended patterns for the raising angle of the back bottom and the knee bottom and the height position of the frame recommended by a care or nursing professional. Power is supplied from the power source 5 to the hand switch 4, MPU 1, and chopper units 6, 7. The chopper units 6 and 7 convert the current from the power source 5 into a pulse current, and output this pulse current for a predetermined period by a control signal from the MPU 1. Output currents from the chopper units 6 and 7 are detected by the current detection units 8 and 9. The current detected by the current detection units 8 and 9 is input to the relay units 10 and 11. The MPU 1 outputs a signal instructing the rotation direction of the motor of the actuator to the relay units 10 and 11, and outputs a signal of the rotational speed corresponding to the current value output from the current detection units 8 and 9 to the drive units 12 and 13. . The driving units 12 and 13 rotate the actuator of the driving unit in the direction instructed by the MPU 1 by the number of rotations instructed by the MPU 1.

  As a result, in the drive unit 12, the piston rod of the actuator advances or retracts for a predetermined length, and the back bottom tilts. Similarly, the knee bottom performs a knee raising operation and a knee lowering operation in a predetermined pattern according to an instruction from the MPU 1.

  Further, the drive unit 13 advances or retracts the piston rod of the actuator for a predetermined length, and increases or decreases the height of the frame by the length instructed by the MPU 1. The position sensor 14 detects the position of the piston rod based on a change in sliding resistance associated with the amount of movement of the piston rod of the actuator, and detects the inclination angle of the back bottom and the knee bottom based on the position of the piston rod. This detection result is input to the MPU 1 and used in the MPU 1 for feedback control of the drive amounts of the drive units 12 and 13.

  The hand switch 4 is provided with a switch for raising and lowering the back bottom and knee bottom, and a switch for raising and lowering the frame, respectively, and the drive units 12 and 13 while the switches are pressed. Continues its commanded action. In addition, the hand switch 4 is provided with a recommended switch for setting a raising angle and a height recommended by a caregiver or nursing professional regarding the raising angle of the back bottom and the knee bottom and the height of the frame. .

  Next, a control mode in the MPU 1 will be described. When the patient or caregiver presses the switch for tilting the back bottom and the knee bottom in the direction of tilting back or horizontally, or the switch for driving the frame up and down by the hand switch 4, the signal Is input to the MPU 1 from the hand switch 4, and the MPU 1 outputs a control signal to the chopper units 6, 7 and the relay parts 10, 11, while the drive units 12, 13 are pressed in a predetermined direction. Drive to perform back-up, back-down, knee-up, knee-down, frame-up or frame-down operations.

  On the other hand, when the patient or caregiver presses the recommended switch of the hand switch 4, the signal is input to the MPU 1 from the hand switch 4, and the MPU 1 receives the care or nursing work from the EEPROM 3 and reduces the care or nursing work. Read out recommended values of back-up angle, knee-up angle and frame (bed) height recommended as effective for promoting patient independence. Then, the MPU 1 outputs a control signal based on this recommended value to the chopper parts 6 and 7 and the relay parts 10 and 11 to drive the drive parts 12 and 13 in a predetermined direction, raising the back, lowering the back, Raise, lower knee, raise frame or lower frame. Thus, the drive control is performed so that the back bottom, the knee bottom, and the frame coincide with the recommended values.

It is a block diagram which shows the operation control apparatus of the electric bed which concerns on embodiment of this invention.

Explanation of symbols

1: MPU
2: Serial / parallel signal input / output terminal 3: EEPROM
4: Hand switch 5: Power source 6, 7: Chopper unit 8, 9: Current detection unit 10, 11: Relay unit 12, 13: Drive unit 14, 15: Position sensor

Claims (2)

  A bottom drive member that lifts and lowers at least one of a back bottom and a knee bottom that are tiltably attached to the frame; and a frame drive member that lifts and lowers the frame. The bottom drive member includes a signal from a remote control switch or a fixed switch. In an electric bed motion control apparatus that drives a driving member or a frame driving member to operate a bed bottom or a frame, a predetermined angle of a back bottom and / or a knee bottom driven by the bottom driving member and a predetermined frame The back bottom and / or the knee bottom and the frame are set to the predetermined angle and the predetermined height, respectively, by the storage device for storing the height position and the input of the operation start signal from the remote control switch or the fixed switch. And an electric bed characterized by having a control section for driving and controlling the motor. Motion control device.   In the control unit, a restriction range is provided for the angle and height of the back bottom and / or knee bottom and frame, respectively, and when an operation start signal is input from the remote control switch or fixed switch, The operation control device for an electric bed according to claim 1, wherein drive control of the back bottom and / or knee bottom and frame is performed within a restricted range.

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