JP5813914B2 - Automatic analyzer - Google Patents

Description

  The present invention relates to an automatic analyzer that measures a mixed liquid of a sample and a reagent using light from a light source lamp.

  The automatic analyzer measures a mixed liquid of a sample and a reagent using light from a light source lamp. When the light source lamp is used for a long time, the energy of the generated light decreases. Therefore, it is necessary to replace the light source lamp at an appropriate timing. The replacement of the light source lamp is performed, for example, as follows. First, the light source lamp is inspected before photometry. If it is determined that the energy is lower than before, the automatic analyzer is stopped, the light source lamp is turned off, and the light source lamp is replaced. As described above, when the light source lamp is replaced, the automatic analyzer must be temporarily stopped.

  In addition, the light source lamp immediately after turning off is very hot. For this reason, the light source lamp can be removed only after several tens of minutes after the lamp is turned off. Even if a new light source lamp is installed, it must be turned on for several tens of minutes to stabilize the energy before it can be used. If the light source lamp has to be replaced suddenly, it takes time to replace the light source lamp, and it takes time to restart the measurement. Thus, the replacement work of the light source lamp requires a great amount of work time and a burden on the operator, and is very inefficient.

JP 2007-263723 A

  An object of the present invention is to provide an automatic analyzer that improves the efficiency of exchanging light source lamps for photometry.

The automatic analyzer according to the first aspect of the present invention provides a photometric lamp, at least one auxiliary lamp for the photometric lamp, and the photometric lamp and the at least one auxiliary lamp at positions relative to each other. A switchable support mechanism, a measuring unit that measures the usage time of the photometric lamp or the intensity of light generated from the photometric lamp, and the measured usage time reaches a first time threshold. Or when the measured light intensity has decreased to the first intensity threshold value before the position of the auxiliary lamp is switched by the support mechanism.
And an illumination control unit to be lit.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the automatic analyzer which implement | achieves the efficiency improvement of the replacement | exchange operation | work of the light source lamp for photometry.

The block diagram of the photometry system of the automatic analyzer which concerns on 1st Embodiment of this invention. The figure which shows schematic structural example of the lamp replacement | exchange mechanism in the state in which the main light source lamp of FIG. 1 and the backup light source lamp were attached. The figure which shows the example of schematic structure of the lamp replacement | exchange mechanism in the state in which the main light source lamp of FIG. 1 and the backup light source lamp are not attached. The figure which looked at the lamp replacement mechanism of FIG.2 and FIG.3 from the arrow A direction. The figure which shows the timing of lighting of the backup light source lamp 13 and the switching operation of a light source lamp position according to the time change of the light intensity (energy) of each light source lamp of FIG. The figure which shows the outline of the flow of operation | movement of the automatic analyzer of FIG. The block diagram of the photometry system of the automatic analyzer which concerns on 2nd Embodiment of this invention. The block diagram of the photometry system of the automatic analyzer which concerns on 3rd Embodiment of this invention. The figure which shows the timing of lighting of the backup light source lamp and switching operation of the light source lamp position according to the cumulative lighting time of each light source lamp of FIG. The figure which shows the outline of the flow of operation | movement of the automatic analyzer which concerns on 4th Embodiment of this invention. The figure which looked at the light source lamp support mechanism of the automatic analyzer which concerns on 5th Embodiment of this invention from the front. 12-12 sectional drawing of FIG. The block diagram of the photometry system of the automatic analyzer which concerns on 6th Embodiment of this invention. The figure which shows the outline of the flow of operation | movement of the automatic analyzer of FIG. FIG. 14 is another diagram showing an outline of an operation flow of the automatic analyzer of FIG. 13. The figure which shows the outline of the flow of operation | movement of the automatic analyzer which concerns on 7th Embodiment of this invention.

  Hereinafter, an automatic analyzer according to an embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
The automatic analyzer according to the first embodiment is characterized by a photometric system that measures a mixture of a sample and a reagent dispensed in a reaction tube with light.

  FIG. 1 is a block diagram of a photometric system of an automatic analyzer according to an embodiment of the present invention. As shown in FIG. 1, the photometric system includes a main light source lamp 11, a spare light source lamp 13, a light source lamp support mechanism 15, a life determination light detection unit 17, a life index measurement unit 19, a life determination unit 21, a notification unit 23, The illumination operation unit 25, the illumination control unit 27, the power supply unit 29, the lamp position operation unit 31, the drive control unit 33, and the drive unit 35 are included.

  The main light source lamp 11 is a light source lamp that generates light. Hereinafter, it is assumed that the main light source lamp 11 is a light source lamp that is disposed at a photometric position and used for photometry unless otherwise specified. At the time of photometry, the main light source lamp 11 is turned on for photometry. The main light source lamp 11 is turned on when power is supplied from the power supply unit 29 and is turned off when supply is stopped.

  The auxiliary light source lamp 13 is a light source lamp that generates light. Hereinafter, it is assumed that the spare light source lamp 13 is a light source lamp that is not disposed at the photometric position and is not used for photometry unless otherwise specified. That is, the spare light source lamp 13 is provided as a spare for the main light source lamp 13. When the light is measured by the main light source lamp 11, the auxiliary light source lamp 13 is not normally lit. When the life of the main light source lamp 11 is approaching, the auxiliary light source lamp 13 is turned on. As with the main light source lamp 11, the auxiliary light source lamp 13 is turned on when power is supplied from the power supply unit 29, and is turned off when supply is stopped. The number of spare light source lamps 13 may be one or plural. However, in order to perform the following description specifically, it is assumed that there is one spare light source lamp 13.

  The main light source lamp 11 and the auxiliary light source lamp 13 have the same product standards. As the main light source lamp 11 and the auxiliary light source lamp 13, for example, a halogen tungsten lamp is used. A warranty period is set for each of the light source lamps 11 and 13. This guarantee period is set to 800 hours to 1000 hours, for example.

  The light source lamp support mechanism 15 supports the main light source lamp 11 and the auxiliary light source lamp 13 so that their positions can be switched. More specifically, the light source lamp support mechanism 15 supports the main light source lamp 11 and the auxiliary light source lamp 13 so as to be rotatable about an axis. The light source lamp support mechanism 15 rotates around the axis in response to the drive signal supplied from the drive unit 35, and switches between the position of the main light source lamp 11 and the position of the auxiliary light source lamp 13. The light source lamp support mechanism 15 connects the main light source lamp 11 and the auxiliary light source lamp 15 to the power supply unit 29 individually.

  The life determination light detection unit 17 detects light generated from the main light source lamp 11 and generates an electrical signal corresponding to the detected light intensity. The generated electrical signal is supplied to the life index measuring unit 19. The life determination light detection unit 17 may be a photometric light detection unit such as a grating or a photometric sensor, or may be a dedicated light detection unit that is not a photometric light detection unit. In addition, in order to perform the following description specifically, it is assumed that the life determination light detection unit 17 is a separate light detection unit from the photometry light detection unit.

  The life index measuring unit 19 measures the intensity of light generated from the main light source lamp 11 based on the electrical signal output from the life determination light detecting unit 17. The measured light intensity data is supplied to the life determination unit 21 and the illumination control unit 27.

  The life determination unit 21 determines whether the main light source lamp 11 and the standby light source lamp 13 should be switched based on the light intensity measured by the life index measurement unit 19, that is, whether the life of the main light source lamp 11 is approaching. Determine whether or not. When it is determined that the switching should be performed, the life determination unit 21 supplies the notification unit 23 with a switching signal indicating that switching should be performed. When it is determined that the switching is not necessary, the life determination unit 21 supplies a non-switching signal indicating that the switching is not necessary to the notification unit 23.

  The notification unit 23 notifies the operator of the determination result by the life determination unit 21. Specifically, when the switching signal is supplied from the life determination unit 21, the notification unit 23 should switch between the main light source lamp 11 and the standby light source lamp 13, that is, the life of the main light source lamp 11 is approaching. A message to the effect is output. Further, when the non-switching signal is supplied from the life determination unit 21, the notification unit 23 does not have to switch between the main light source lamp 11 and the standby light source lamp 13, that is, the life of the main light source lamp 11 is not approaching. A message to that effect is output. In most cases, it is considered that a non-switching signal is supplied, so the notification unit 23 does not need to output a message while the non-switching signal is supplied.

  The illumination operation unit 25 supplies the illumination control unit 27 with a turn-off instruction signal for turning off the main light source lamp 11 in accordance with an instruction from the operator. The illumination operation unit 25 is provided on the console of the automatic analyzer, and is realized by a pointing device such as a mouse or a trackball, a selection device such as a changeover switch, or an input device such as a keyboard.

  The illumination control unit 27 generates an illumination control signal for controlling the illumination of each of the light source lamps 11 and 13 according to the light intensity measured by the life index measuring unit 19 and the turn-off instruction signal from the illumination operation unit 25. The power is supplied to the power supply unit 29. More specifically, the lighting control unit 27 turns on the lighting control signal (lighting) for turning on the auxiliary light source lamp 13 when the light intensity of the main light source lamp 11 supplied from the life index measuring unit 19 decreases to a predetermined value. Start signal) is supplied to the power supply unit 29. In addition, an illumination control signal (extinguishing signal) for turning off the main light source lamp 11 is supplied to the power supply unit 29 when the extinguishing instruction signal is supplied from the lighting operation unit 25.

  The power supply unit 29 is provided independently from the power supply system of the automatic analyzer. Since the wiring from the power supply unit 29 to the main light source lamp 11 and the wiring to the auxiliary light source lamp 13 are provided independently, the main light source lamp 11 and the auxiliary light source lamp 13 can be individually turned on and off. In response to the illumination control signal from the illumination control unit 27, the power supply unit 29 supplies power for turning on the lamp to the main light source lamp 11 and the standby light source lamp 13, or stops the supply of power. More specifically, the power supply unit 29 starts to supply power to the auxiliary light source lamp 13 when the lighting start signal from the illumination control unit 27 is supplied, and turns on the auxiliary light source lamp 13. In addition, the power supply unit 29 stops the supply of power to the main light source lamp 11 and turns off the main light source lamp 11 when the extinction signal from the illumination control unit 27 is supplied.

  The lamp position operation unit 31 supplies a drive instruction signal for operating the support mechanism 15 to the drive control unit 33 in accordance with an instruction from the operator. The lamp position operation unit 31 is provided on the console of the automatic analyzer, and is realized by a pointing device such as a mouse or a trackball, a selection device such as a changeover switch, or an input device such as a keyboard.

  The drive control unit 33 receives a drive instruction signal from the lamp position operation unit 31 as an opportunity to send a drive control signal for switching between the position of the main light source lamp 11 and the position of the auxiliary light source lamp 13 to the drive unit 35. To supply.

  The drive unit 35 supplies a drive signal to the light source lamp support mechanism 15 based on the drive control signal from the drive control unit 33. As described above, the light source lamp support mechanism 15 that receives the supply of the drive signal from the drive unit 35 rotates around the axis, and switches the position of the main light source lamp 11 and the position of the auxiliary light source lamp 13.

  The main light source lamp 11, the auxiliary light source lamp 13, the light source lamp support mechanism 15, the light detection unit 17, and the power supply unit 29 constitute a lamp replacement mechanism 37. FIG. 2 is a diagram illustrating a schematic configuration example of the lamp replacement mechanism 37 in a state where the main light source lamp 11 and the auxiliary light source lamp 13 are attached. FIG. 3 is a diagram illustrating a schematic configuration example of the lamp replacement mechanism 37 in a state where the main light source lamp 11 and the auxiliary light source lamp 13 are not attached. 4 is a view of the lamp replacement mechanism of FIGS. 2 and 3 as viewed from the direction of the arrow A. FIG.

  As shown in FIGS. 2 to 4, the light source lamp support mechanism 15 includes a fixed plate 39 provided in the photometric system, a shaft 40 penetrating the fixed plate 39, a first lamp holder 41 a attached to the shaft 40, and a first lamp holder 41 a. 2 lamp holders 41b. The fixed plate 39 and the shaft 40 are not connected. The fixing plate 39 and the lamp holders 41a and 41b are in contact with each other without a gap, but are not connected.

  The lamp holders 41a and 41b are made of an electrically insulating synthetic resin or the like. The first lamp holder 41 a accommodates the main light source lamp 11, and the second lamp holder 41 b accommodates the auxiliary light source lamp 13. The main light source lamp 11 has a base part 43a for electrical and mechanical connection with the first lamp holder 41a, and the auxiliary light source lamp 13 has a base part for electrical and mechanical connection with the second lamp holder 41b. A portion 43b is provided. Lead wires 45 a and b for electrical connection to the power supply unit 29 are attached to the cap portions 43 a and b of the light source lamps 11 and 13. The lamp holders 41 a, b are provided with base receiving parts 47 a, b into which the base parts 43 a, b of the light source lamps 11, 13 are screwed.

  The light source lamps 11 and 13 are attached to the lamp holders 41 a and b by screwing the base portions 43 a and b into the base receiving portions 47 a and b by the operator. Lead wires 45a and 45b attached to the cap portions 41a and 41b are guided to the outside of the lamp holders 41a and 41b through through holes (not shown) formed in the lamp holders 41a and 41b, and are supplied with power (power supply). 29 terminals 49a and 49b. The power supply unit 29 is wired so that power can be individually supplied to the first terminal 49a and the second terminal 49b.

  The fixing plate 39 provided at the photometric position is formed with a through-hole for fitting the life determination light detection unit (light source lamp monitor) 17. The axis Z2 of the through hole and the axis Z3 of the filament of the light source lamp in a state of being screwed into the lamp holder at the photometric position (first lamp holder 41a in FIGS. 2 and 3) coincide with each other. The diameter of the through hole is substantially the same as the diameter of the life determining detector 17 so that light generated from the light source lamps 11 and 13 does not leak in a state where the life determining light detector 17 is accommodated. It is formed. The life determination light detection unit 17 is fitted into the through hole so that the detection surface thereof faces the main light source lamp 11. The electrical signal generated by the life determination light detection unit 17 is supplied to the life index measurement unit 19 via a cable (not shown).

  The shaft 40 supports the first lamp holder 41a and the second lamp holder 41b so as to be rotatable around the axis Z1. The shaft 40 has a first lamp so that the main light source lamp 11 and the auxiliary light source lamp 13 face in opposite directions, that is, the main light source lamp 11 and the auxiliary light source lamp 13 are arranged radially around the axis Z1. The holder 41a and the second lamp holder 41b are supported. The shaft 40 supports the first lamp holder 41a and the second lamp holder 41b so that the main light source lamp 11 or the auxiliary light source lamp 13 is positioned at the photometric position. In response to the supply of power from the power supply unit 29, the shaft 40 rotates 180 degrees. By rotating 180 degrees, the position of the first lamp holder 41a and the position of the second lamp holder 41b are switched, and the auxiliary light source lamp 13 accommodated in the second lamp holder 41b is positioned at the photometric position.

  Slits 51a and 51b are attached in front of the lamp holders 41a and 41b. The slits 51a and 51b and the fixed plate 39 are not connected.

  The light generated from the light source lamp at the photometric position (main light source lamp 11 in FIGS. 2 and 3) passes through the slit at the photometric position (slit 51a in FIGS. 2 and 3) and travels forward. The light that has passed through this slit is collected by the first condenser lens 53. The light that has passed through the first condenser lens 53 passes through the mixed solution via the reaction tube 55. The light that has passed through the liquid mixture passes through the second condenser lens 57 and reaches the photometric light detection unit 59. The photometric light detection unit 59 detects the light transmitted through the liquid mixture and generates an electrical signal corresponding to the detected light intensity. The electric signal generated by the photometric light detection unit 59 is supplied to a calculation unit (not shown) in order to calculate photometric data. The optical path according to the first embodiment is stationary and reaches the light detection unit 59 via the reaction tube 55 from the light source lamp at the photometric position.

  As will be described later, the main light source lamp 11 and the auxiliary light source lamp 13 may be turned on simultaneously. On the other hand, the light generated from the light source lamps 11 and 13 travels forward through the slits 51a and 51b of the lamp holders 41a and 41b. In other words, most of the light generated from the light source lamps 11 and 13 is emitted from the slits 51a and 51b. That is, even when the main light source lamp 11 and the auxiliary light source lamp 13 are lit simultaneously, the photometric light detection unit 59 does not detect light generated from a light source lamp that is not at the photometric position. Thus, the lamp holders 41a and 41b and the fixed plate 39 also play a role of shielding light.

  Next, the operation flow of the automatic analyzer according to the first embodiment will be described in detail. FIG. 5 is a diagram illustrating the timing of the lighting of the spare light source lamp 13 and the switching operation of the light source lamp position according to the temporal change of the light intensity (energy) of each of the light source lamps 11 and 13. FIG. 6 is a diagram showing an outline of the operation flow of the automatic analyzer.

  As shown in FIGS. 5 and 6, it is assumed that the main light source lamp 11 is lit and used for photometry, and the auxiliary light source lamp 13 is not lit. It is assumed that the light generated from the main light source lamp 11 has sufficient energy E0 for photometry. For example, after the guarantee period, the energy of light generated from the main light source lamp 11 decreases. When the energy decreases to the preset first threshold value E1 (time t1), the illumination control unit 27 supplies a lighting start signal for lighting the auxiliary light source lamp 13 to the power supply unit 29. The power supply unit 29 supplies power to the auxiliary light source lamp 13 to light it. The first threshold E1 can be arbitrarily set by the operator.

  The energy of the generated light is not stable for a period of time after starting lighting (hereinafter referred to as an unstable period). The time required for the light energy to stabilize varies depending on the type of the light source lamp, but is, for example, about 30 minutes to 60 minutes. When the unstable period has elapsed from time t1, the energy estimated to have light is set to the second threshold E2. The second threshold E2 is lower than the first threshold E1. The second threshold value E2 can also be arbitrarily set by the operator.

  When the auxiliary light source lamp 13 is turned on and the energy of light generated from the main light source lamp 11 is reduced to the second threshold value E2 (time t2), the life determination unit 21 should replace the main light source lamp 11 judge. Alternatively, the life determination unit 21 may directly determine that the main light source lamp 11 should be replaced when the unstable period has elapsed from time t1. When the life determination unit 21 determines that the main light source lamp 11 should be replaced, the notification unit 23 outputs a message to that effect. As a notification method, for example, a method for displaying a text indicating that the main light source lamp 11 should be replaced on a display mounted on the console, or that the main light source lamp 11 should be replaced via a speaker mounted on the console. There is a method of outputting sound. Alternatively, a lamp provided on the console may be turned on, or a warning sound may be output via a speaker.

  When receiving the notification that the main light source lamp 11 should be replaced, the operator presses a lamp position switching button provided on the console, for example. When notification from the notification unit 23 is made during metering, the operator may press the lamp position switching button when the order during metering ends. The lamp position operation unit 31 supplies a drive instruction signal to the drive control unit 33 when the lamp position switching button is pressed. Receiving the drive instruction signal, the drive control unit 33 controls the drive unit 35 to drive the shaft 40 to switch the position of the main light source lamp 11 and the position of the auxiliary light source lamp 13. When the light source lamp position is switched, the auxiliary light source lamp 13 is used for photometry.

  After switching the light source lamp position, the operator presses an extinguishing button provided on the console, for example. When the extinguishing button is pressed, the lighting operation unit 25 supplies an extinguishing instruction signal to the lighting control unit 27. Upon receiving the turn-off instruction signal, the illumination control unit 27 controls the power supply unit 29 to turn off the main light source lamp 11. When the main light source lamp 11 is sufficiently cooled after the light is turned off, the operator removes the main light source lamp 11 from the first lamp holder 41a. If necessary, the operator attaches a new light source lamp to the first lamp holder 41a.

  With the above configuration, the automatic analyzer according to the first embodiment includes the light source lamp support mechanism 15 that supports the main light source lamp 11 and the auxiliary light source lamp 13 so that the positions of each other can be switched. Accordingly, the main light source lamp 11 and the spare light source lamp 13 can be replaced without cooling the main light source lamp 11, and the replacement time of the light source lamp is reduced. Moreover, the automatic analyzer according to the first embodiment monitors the energy of light generated from the main light source lamp 11 by the life determination light detection unit 17 and automatically turns on the auxiliary light source lamp 13 before switching the lamp position. Let Thereby, the auxiliary light source lamp 13 can be used for photometry immediately after the lamp position is switched. Further, since the power supply system of the light source lamp is independent of the power supply system of the automatic analyzer main body, the light source lamp can be replaced without turning off the power of the automatic analyzer main body.

  Thus, according to the first embodiment, it is possible to provide an automatic analyzer that realizes an improvement in efficiency of replacement work of a light source lamp for photometry.

  When there are a plurality of spare light source lamps 13, the same number of second lamp holders as the spare light source lamps 13 are attached to the shaft 40. That is, the shaft 40 supports the first lamp holder and the plurality of second lamp holders so as to be rotatable around the axis Z1. The shaft 40 supports the first lamp holder 41a and the plurality of second lamp holders 41b so that the main light source lamp 11 and the plurality of auxiliary light source lamps 13 are radially arranged around the axis Z1. In this case, the shaft 49 rotates by 360 degrees / (n) in response to the supply of power from the power supply unit 29. Note that n is the total of the number of main light source lamps 11 and the number of spare light source lamps 13.

(Second Embodiment)
Hereinafter, an automatic analyzer according to the second embodiment will be described. In the following description, components having substantially the same functions as those of the present embodiment are denoted by the same reference numerals, and redundant description will be given only when necessary.

  FIG. 7 is a block diagram of a photometric system of the automatic analyzer according to the second embodiment. As shown in FIG. 7, the photometric system according to the second embodiment includes a main light source lamp 11, a spare light source lamp 13, a light source lamp support mechanism 15, a life determination light detection unit 17, a life index measurement unit 19, and a life determination unit. 21, a notification unit 23, an illumination control unit 27, a power supply unit 29, a drive control unit 33, and a drive unit 35.

  The life determination unit 21 determines whether or not the main light source lamp and the standby light source lamp should be switched based on the intensity of light supplied from the life index measurement unit 19. When it is determined that the switching should be performed, the life determination unit 21 supplies a switching signal to the notification unit 23, the illumination control unit 27, and the drive control unit 33. When it is determined that the switching is not necessary, the life determination unit 21 supplies a non-switching signal to the notification unit 23.

  When the intensity of the light from the main light source lamp 11 supplied from the life index measuring unit 19 decreases to a predetermined value, the illumination control unit 27 uses an illumination control signal (lighting start signal) for turning on the auxiliary light source lamp 13 as power. Supply to the supply unit 29. When the switching signal is supplied from the life determination unit 21, the illumination control unit 27 supplies the power supply unit 29 with a turn-off signal for turning off the main light source lamp 11.

  The power supply unit 29 starts supplying power to the auxiliary light source lamp 13 and turns on the auxiliary light source lamp 13 when the lighting start signal from the illumination control unit 27 is supplied. In addition, the power supply unit 29 stops the supply of power to the main light source lamp 11 and turns off the main light source lamp 11 when the extinction signal from the illumination control unit 27 is supplied.

  When the switching signal is supplied from the life determination unit 21, the drive control unit 33 supplies the drive unit 33 with a drive control signal for switching between the position of the main light source lamp 11 and the position of the auxiliary light source lamp 13.

  The drive unit 35 supplies a drive signal to the support mechanism 15 based on the drive control signal from the drive control unit 33. As described above, the support mechanism 15 that receives the supply of the drive signal from the drive unit 35 rotates around the axis to switch the position of the main light source lamp 11 and the position of the auxiliary light source lamp 13.

  With the above configuration, the automatic analyzer according to the second embodiment automatically turns on the auxiliary light source lamp 13, switches between the position of the main light source lamp 11 and the position of the auxiliary light source lamp 13, and turns off the main light source lamp 11. be able to.

  Thus, according to the second embodiment, it is possible to provide an automatic analyzer that realizes an improvement in efficiency of replacement work of a light source lamp for photometry.

  If the lamp position is switched during photometry, the photometry data may be adversely affected. Therefore, even if the switching signal is supplied from the life determination unit 21, the drive control unit 33 stands by without supplying the drive control signal during photometry. For example, the drive control unit 33 supplies a drive control signal to the drive unit 35 in response to the end of one photometric order, the shutdown of the automatic analyzer, the start of maintenance, or the like.

(Third embodiment)
Hereinafter, an automatic analyzer according to the third embodiment will be described. In the following description, components having substantially the same functions as those in the first embodiment are denoted by the same reference numerals, and redundant description is provided only when necessary.

  FIG. 8 is a block diagram of the photometric system of the automatic analyzer according to the third embodiment. As shown in FIG. 8, the photometric system according to the third embodiment includes a main light source lamp 11, a spare light source lamp 13, a light source lamp support mechanism 15, a life determination light detection unit 17 ', a life index measurement unit 19, and a life determination. Unit 21 ′, notification unit 23, illumination operation unit 25, illumination control unit 27, power supply unit 29, lamp position operation unit 31, drive control unit 33, and drive unit 35.

  While detecting the light generated from the main light source lamp 11, the life determination light detection unit 17 ′ supplies a lighting signal indicating that light is detected to the life index measurement unit 19 ′.

  The life index measurement unit 19 ′ counts the cumulative value of the lighting signal from the life determination light detection unit 17 ′ for each light source lamp. This cumulative value represents the cumulative lighting time of the main light source lamp 11. The accumulated lighting time is supplied to the life determination unit 21 ′ in real time.

  Whether the life determination unit 21 ′ should switch between the main light source lamp 11 and the standby light source lamp 13 based on the cumulative lighting time of the main light source lamp 11 supplied from the life index measurement unit 19 ′ or not. Determine. When it is determined that the switching should be performed, the life determination unit 21 ′ supplies a switching signal to the notification unit 23. When it is determined that the switching is not necessary, the life determination unit 21 ′ supplies a non-switching signal to the notification unit 23.

  The illumination control unit 27 supplies the power supply unit 29 with a lighting start signal for lighting the auxiliary light source lamp 13 when the cumulative lighting time supplied from the life index measuring unit 19 ′ reaches a predetermined value.

  Next, the operation flow of the automatic analyzer according to the third embodiment will be described in detail. FIG. 9 is a diagram showing the timing of the lighting of the spare light source lamp 13 and the switching operation of the light source lamp position according to the cumulative lighting time IV of each light source lamp. As shown in FIG. 9, it is assumed that the main light source lamp 11 is lit and used for photometry, and the auxiliary light source lamp 13 is not lit. It is assumed that the cumulative lighting time IV of the main light source lamp 11 is the cumulative lighting time IV0 before the guarantee period passes. When the main light source lamp 11 continues to be used and the accumulated lighting time reaches a preset first threshold IV1 (time t1), the illumination control unit 27 uses a lighting start signal for lighting the auxiliary light source lamp 13 as power. Supply to the supply unit 29. The power supply unit 29 supplies power to the auxiliary light source lamp 13 to light it. The first threshold IV1 is set, for example, about 60 minutes before the guarantee period. The first threshold IV1 can be arbitrarily set by the operator.

  For example, the added value of the first threshold IV1 and the unstable period is set as the second threshold IV2. The second threshold IV2 can also be set arbitrarily by the operator.

  When the auxiliary light source lamp 13 is turned on and the cumulative lighting time of the main light source lamp 11 reaches the second threshold IV2 (time t2), the life determination unit 21 ′ determines that the main light source lamp 11 should be replaced. . When the life determination unit 21 ′ determines that the main light source lamp 11 should be replaced, the notification unit 23 outputs a message to that effect.

  When the notification that the main light source lamp 11 should be replaced is received, the lamp position operation unit 31 supplies a drive instruction signal to the drive control unit 33 in accordance with an instruction from the operator, as in the first embodiment. Receiving the drive instruction signal, the drive control unit 33 controls the drive unit 35 to drive the shaft 40 to switch the position of the main light source lamp 11 and the position of the auxiliary light source lamp 13.

  In addition, after switching the light source lamp position, the lighting operation unit 25 supplies a turn-off instruction signal to the lighting control unit 27 in accordance with an operator instruction, as in the first embodiment. Receiving the supply of the turn-off instruction signal, the illumination control unit 27 controls the power supply unit 29 to turn off the main light source lamp 11. The operator replaces the lamp.

  With the above configuration, the automatic analyzer according to the third embodiment turns on the auxiliary light source lamp 13 according to the cumulative lighting time of the main light source lamp 11, and the position of the main light source lamp 11 and the position of the auxiliary light source lamp 13. Or the main light source lamp 11 is turned off.

  Thus, according to the third embodiment, it is possible to provide an automatic analyzer that realizes an improvement in efficiency of replacement work of a light source lamp for photometry.

  In the above configuration, the automatic analyzer according to the third embodiment has the life determination light detection unit 17, but it does not have to be provided. In this case, the illumination control unit 27 supplies a lighting signal indicating that the main light source lamp 11 is turned on periodically (for example, every second) to the life index measuring unit 19 ′. .

  In the above configuration, the automatic analyzer according to the third embodiment includes the illumination operation unit 25 and the lamp position operation unit 31. However, the automatic analysis device may not be provided. In this case, as in the second embodiment, the life determination unit 21 ′ supplies a switching signal to the illumination control unit 27 and the drive control unit 33, so that the main light source lamp 11 is turned off and the position of the main light source lamp 11 is changed. Switching to the position of the auxiliary light source lamp 13 is automated.

(Fourth embodiment)
FIG. 10 is a diagram illustrating an outline of an operation flow of the automatic analyzer according to the fourth embodiment. The number of auxiliary light source lamps 13 according to the fourth embodiment may be one or plural. However, in order to perform the following description specifically, it is assumed that there is one spare light source lamp 13. The functional blocks of the photometric system of the automatic analyzer according to the fourth embodiment are realized by the same ones as those in the first, second, or third embodiment.

  As shown in FIG. 10, the lamp holders 41 a and 41 b according to the fourth embodiment are containers that contain light source lamps. Each lamp holder 41a, b is provided with a life determination light detection unit 17. The light source lamp support mechanism 61 of the automatic analyzer according to the fourth embodiment includes a guide rail 63 and a slider 65. The slider 65 supports the first lamp holder 41a and the second lamp holder 41b side by side. More specifically, the slider 65 supports the first lamp holder 41a and the second lamp holder 41b so that the directions of the main light source lamp 11 and the auxiliary light source lamp 13 coincide. The guide rail 63 supports the slider 65 so that it can move in parallel along the arrangement direction of the lamp holders 41a, 41b. The slider 65 is supplied with a drive signal from the drive unit 35, and moves on the guide rail 63 at a predetermined distance (for example, between the light source lamps) so that the main light source lamp 11 or the auxiliary light source lamp 13 is positioned at the photometric position P. Translate by pitch).

  As shown in FIG. 10, it is assumed that the main light source lamp 11 is lit and used for photometry, and the auxiliary light source lamp 13 is not lit. When the energy or the cumulative lighting time reaches the first threshold value, the illumination control unit 27 supplies the power supply unit 29 with a lighting start signal for lighting the auxiliary light source lamp 13. The power supply unit 29 supplies power to the auxiliary light source lamp 13 to light it.

  When the auxiliary light source lamp 13 is turned on and the intensity of light generated from the main light source lamp 11 reaches the second threshold value, the life determination unit 21 determines that the main light source lamp 11 should be replaced. When the life determination unit 21 determines that the main light source lamp 11 should be replaced, the notification unit 23 outputs a message to that effect.

  When receiving the notification that the main light source lamp 11 should be replaced, the operator presses a lamp position switching button provided on the console, for example. When notification from the notification unit 23 is made during metering, the operator may press the lamp position switching button when the order during metering ends. The lamp position operation unit 31 supplies a drive instruction signal to the drive control unit 33 when the lamp position switching button is pressed. Upon receiving the drive instruction signal, the drive control unit 33 controls the drive unit 35 to move the slider 65 to switch the position of the main light source lamp 11 and the position of the auxiliary light source lamp 13. When the light source lamp position is switched, the auxiliary light source lamp 13 is used for photometry.

  After switching the light source lamp position, the operator presses an extinguishing button provided on the console, for example. When the extinguishing button is pressed, the lighting operation unit 25 supplies an extinguishing instruction signal to the lighting control unit 27. Upon receiving the turn-off instruction signal, the illumination control unit 27 controls the power supply unit 29 to turn off the main light source lamp 11. When the main light source lamp 11 is sufficiently cooled after the light is turned off, the operator removes the main light source lamp 11 from the first lamp holder 41a. If necessary, the operator attaches a new light source lamp to the first lamp holder 41a.

  With the above configuration, the automatic analyzer according to the fourth embodiment has the slide-type light source lamp support mechanism 15 and can switch between the position of the main light source lamp 11 and the position of the auxiliary light source lamp 13 by parallel movement. it can.

  Thus, according to the fourth embodiment, it is possible to provide an automatic analyzer that realizes an improvement in efficiency of replacement work of a light metering lamp for photometry.

  When there are a plurality of spare light source lamps 13, the same number of second lamp holders 41 b as the number of spare light source lamps 13 are attached to the slider 65 in a line.

(Fifth embodiment)
FIG. 11 is a view of the light source lamp support mechanism 67 of the automatic analyzer according to the fifth embodiment as viewed from the front. 12 is a cross-sectional view taken along the line 12-12 in FIG. In addition, the functional block of the photometry system of the automatic analyzer according to the fifth embodiment is realized by the same one as in the first, second, or third embodiment.

  As shown in FIGS. 11 and 12, the light source lamp support mechanism 67 includes a pedestal 69 on a disk and a shaft 71 that passes through the center of the pedestal 69. In the pedestal 69, the shaft 71 supports the pedestal 69 so as to be rotatable around the axis Z4. The pedestal 69 supports the first lamp holder 41a and the plurality of second lamp holders 41b side by side on the same circumference around the axis Z4. The shaft 71 receives a drive signal from the drive unit 35 and rotates by a predetermined angle around the axis Z4 so that the main light source lamp 11 or one of the plurality of auxiliary light source lamps 13 is positioned at the photometric position. To do. For example, the predetermined angle is set to 360 degrees / n when the sum of the number of the first lamp holders 41a and the number of the second lamp holders 41b is n.

  With the above configuration, the automatic analyzer according to the fifth embodiment has the revolver type light source lamp support mechanism 15 and can switch between the position of the main light source lamp 11 and the position of the auxiliary light source lamp 13 by rotational movement. it can.

  Thus, according to the fifth embodiment, it is possible to provide an automatic analyzer that realizes an improvement in efficiency of replacement work of a light source lamp for photometry.

(Sixth embodiment)
The automatic analyzer according to the sixth embodiment will be described below. In the following description, components having substantially the same functions as those of the present embodiment are denoted by the same reference numerals, and redundant description will be given only when necessary.

  FIG. 13 is a block diagram of the photometric system of the automatic analyzer according to the sixth embodiment. As shown in FIG. 13, the photometric system according to the sixth embodiment includes a main light source lamp 11, a spare light source lamp 13, a light source lamp support mechanism 81, a life determination light detection unit 17, a life index measurement unit 19, and a life determination unit. 21, a notification unit 23, an illumination operation unit 25, an illumination control unit 27, a power supply unit 29, a photometric light detection unit 59, an optical path support mechanism 81, a lamp position operation unit 83, a drive control unit 85, and a drive unit 87. .

  The light source lamp support mechanism 81 detachably supports the main light source lamp 11 and the auxiliary light source lamp 13. The main light source lamp 11 and the auxiliary light source lamp 13 are arranged in a line on the light source lamp support mechanism 81.

  The photometric light detection unit 59 detects light emitted from the main light source lamp 11 or the auxiliary light source lamp 13 and generates an electrical signal corresponding to the detected light intensity. The generated electric signal is supplied to a calculation unit (not shown) in order to calculate photometric data.

  The optical path support mechanism 83 is a first optical path from the main light source lamp 11 via the reaction tube 55 to the photometric light detection unit 59, and from the auxiliary light source lamp 13 via the reaction tube 55 to the photometry light detection unit 59. The second optical path to be reached is supported to be switchable.

  The lamp position operation unit 85 supplies a drive instruction signal for operating the optical path support mechanism 83 to the drive control unit 87 in accordance with an instruction from the operator. The lamp position operation unit 85 is provided on the console of the automatic analyzer, and is realized by a pointing device such as a mouse or a trackball, a selection device such as a changeover switch, or an input device such as a keyboard.

  The drive control unit 87 supplies a drive control signal for switching between the first optical path and the second optical path to the drive unit 89 when the drive instruction signal is supplied from the lamp position operation unit 85.

  The drive unit 89 supplies a drive signal to the optical path support mechanism 83 based on the drive control signal from the drive control unit 87. As described above, the optical path support mechanism 81 that has received the drive signal from the drive unit 89 switches between the first optical path and the second optical path.

  Next, the operation flow of the automatic analyzer according to the sixth embodiment will be described in detail. FIG. 14 is a diagram illustrating an outline of an operation flow of the automatic analyzer according to the sixth embodiment.

  As shown in FIG. 14, the light source lamp support mechanism 81 has a pedestal 73. The pedestal 73 supports the first lamp holder 41a that detachably accommodates the main light source lamp 11 and the second lamp holder 41b that detachably accommodates the auxiliary light source lamp 13 side by side. More specifically, the pedestal 73 supports the main light source lamp 11 and the auxiliary light source lamp 13 in the same direction.

  The optical path support mechanism 83 (not shown in FIG. 14) supports optical systems such as the movable first condenser lens 53, the second condenser lens 57, and the photometric light detection unit 59. The optical path support mechanism 83 supports the optical system so that it can be switched between the first arrangement and the second arrangement. When the optical system is arranged in the first arrangement, the optical path support mechanism 83 forms the first optical path. When the optical system is arranged in the second arrangement, the optical path support mechanism 83 forms the second optical path. The optical path support mechanism 83 is supplied with a drive signal from the drive unit 87 and switches the optical system from the first arrangement to the second arrangement, thereby changing the first optical path to the second optical path, or from the second arrangement to the first arrangement. Is switched from the second optical path to the first optical path. The optical path lengths of the first optical path and the second optical path are the same. Further, a slit 74-1 is provided between the first condenser lens 53 and the lamp holders 41a and 41b. The slit 74-1 moves in conjunction with the first condenser lens 53. The slit 74-1 blocks light generated from the auxiliary light source lamp 13 in the case of the first optical path, and blocks light generated from the main light source lamp 11 in the case of the second optical path.

  As shown in FIG. 14, it is assumed that the main light source lamp 11 is turned on and used for photometry, and the auxiliary light source lamp 13 is not turned on. That is, the optical path is assumed to be the first optical path. When the energy of light generated from the main light source lamp 11 or the cumulative lighting time of the main light source lamp 11 reaches the first threshold value, the illumination control unit 27 outputs a lighting start signal for lighting the auxiliary light source lamp 13 as power. Supply to the supply unit 29. The power supply unit 29 supplies power to the auxiliary light source lamp 13 to light it. At this time, the light generated from the auxiliary light source lamp 13 is shielded by the slit 74-1 and is not detected by the light detection unit 59.

  When the auxiliary light source lamp 13 is turned on and the intensity of light generated from the main light source lamp 11 reaches the second threshold value, the life determination unit 21 determines that the main light source lamp 11 should be replaced. When the life determination unit 21 determines that the main light source lamp 11 should be replaced, the notification unit 23 outputs a message to that effect.

  When receiving the notification that the main light source lamp 11 should be replaced, the operator presses a lamp position switching button provided on the console, for example. When notification from the notification unit 23 is made during metering, the operator may press the lamp position switching button when the order during metering ends. The lamp position operation unit 85 supplies a drive instruction signal to the drive control unit 87 when the lamp position switching button is pressed. Upon receiving the drive instruction signal, the drive control unit 87 controls the drive unit 89 to drive the optical path support mechanism 83 to switch between the first optical path and the second optical path. When the light source lamp position is switched, the auxiliary light source lamp 13 is used for photometry.

  After switching the optical path, the operator presses an extinguishing button provided on the console, for example. When the extinguishing button is pressed, the lighting operation unit 25 supplies an extinguishing instruction signal to the lighting control unit 27. Upon receiving the turn-off instruction signal, the illumination control unit 27 controls the power supply unit 29 to turn off the main light source lamp 11. When the main light source lamp 11 is sufficiently cooled after the light is turned off, the operator removes the main light source lamp 11 from the first lamp holder 41a. If necessary, the operator attaches a new light source lamp to the first lamp holder 41a.

  With the configuration described above, the automatic analyzer according to the fifth embodiment has the first optical path from the main light source lamp 11 via the reaction tube 55 to the photometric light detection unit 59 and the auxiliary light source lamp 13 via the reaction tube 55. Thus, an optical path support mechanism 83 is provided to support the optical system so that the second optical path to the photometric light detection unit 59 can be switched. As a result, even when the main light source lamp 11 and the auxiliary light source lamp 13 are fixed, it is possible to take over between the main light source lamp 11 and the auxiliary light source lamp 13.

  Thus, according to the sixth embodiment, it is possible to provide an automatic analyzer that realizes an improvement in efficiency of replacement work of a light source lamp for photometry.

  In the configuration described above, the slit 74-1 is provided to shield the light generated from the auxiliary light source lamp 13 during preliminary lighting. However, the structure for light shielding need not be limited to this. For example, as shown in FIG. 15, a first shutter 74-2a and a second shutter 74-2b may be provided on the exit side of the first lamp holder 41a and the second lamp holder 41b, respectively. The shutters 74-2a and 74-2b are opened and closed each time the optical path is switched. For example, in the case of the first optical path, the shutter 74-2a for the main light source lamp is open and the shutter 74-2b for the spare light source lamp is closed. In response to switching from the first optical path to the second optical path, the shutter 74-2a for the main light source lamp is closed and the shutter 74-2b for the spare light source lamp is opened. As described above, the opening and closing of the shutters 74-2a and 74-2b is switched when the optical path is switched, so that the light generated from the preliminary light source lamp 13 can be shielded during preliminary lighting.

(Seventh embodiment)
FIG. 16 is a diagram illustrating an outline of an operation flow of the automatic analyzer according to the seventh embodiment. Note that the functional blocks of the photometric system of the automatic analyzer according to the seventh embodiment are realized by the same ones as those in the sixth embodiment. In the following description, components having substantially the same functions as those in the first to sixth embodiments are denoted by the same reference numerals, and redundant description is provided only when necessary.

  As shown in FIG. 16, the light source lamp support mechanism 81 has a pedestal 73. The pedestal 73 supports the first lamp holder 41a that detachably accommodates the main light source lamp 11 and the second lamp holder 41b that detachably accommodates the auxiliary light source lamp 13 side by side. More specifically, the pedestal 73 supports the main light source lamp 11 and the auxiliary light source lamp 13 in the same direction.

  The optical path support mechanism 83 (not shown in FIG. 16) according to the seventh embodiment includes a first optical path from the main light source lamp 11 through the reaction tube 55 to the photometric light detection unit 59, and the auxiliary light source lamp 13. The second optical path from the first through the reaction tube 55 to the photometric light detection unit 59 is supported to be switchable. Specifically, the optical path support mechanism 83 supports the first condenser lens 53, the second condenser lens 57, the photometric light detection unit 59, and the fiber 75. The positions of the first condenser lens 53, the second condenser lens 57, and the photometric light detector 59 are fixed. The optical path support mechanism 83 fixes and supports one end of the fiber 75 in front of the first condenser lens 53, and the other end of the fiber 75 near the opening of the slit 51a of the first lamp holder 41a or the second lamp holder 41b. It supports so that it can switch to the opening vicinity of the slit 51b. Hereinafter, the case where the other end 75 of the fiber is arranged in the vicinity of the opening of the slit 51a is referred to as a first arrangement, and the case where the other end of the fiber 75 is arranged in the vicinity of the opening of the slit 51b is referred to as a second arrangement. .

  When the other end of the fiber 75 is arranged in the first arrangement, the optical path support mechanism 83 forms the first optical path. When the other end of the fiber 75 is arranged in the second arrangement, the optical path support mechanism 83 forms a second optical path. The optical path support mechanism 83 receives the supply of the drive signal from the drive unit 89 and switches the other end of the fiber 75 from the first arrangement to the second arrangement or from the second arrangement to the first arrangement. The optical path lengths of the first optical path and the second optical path are the same.

  The optical path support mechanism 83 may support a mirror instead of the fiber 75. In this case, the optical path support mechanism 83 switches the first optical path and the second optical path by switching the position of the mirror in response to the supply of the drive signal from the drive unit 89.

  With the above configuration, the automatic analyzer according to the seventh embodiment has the first optical path from the main light source lamp 11 via the reaction tube 55 to the photometric light detection unit 59 and the auxiliary light source lamp 13 via the reaction tube 55. Thus, the optical path support mechanism 83 that supports the fiber 75 and the mirror is provided so that the second optical path to the photometric light detection unit 59 can be switched. As a result, even when the main light source lamp 11 and the auxiliary light source lamp 13 are fixed, it is possible to take over between the main light source lamp 11 and the auxiliary light source lamp 13.

  Thus, according to the seventh embodiment, it is possible to provide an automatic analyzer that realizes an improvement in efficiency of replacement work of a light source lamp for photometry.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

  As mentioned above, according to this invention, provision of the automatic analyzer which implement | achieves the efficiency improvement of the replacement | exchange operation | work of the light source lamp for photometry is realizable.

  DESCRIPTION OF SYMBOLS 11 ... Main light source lamp, 13 ... Spare light source lamp, 15 ... Light source lamp support mechanism, 17 ... Life detection light detection part, 19 ... Life index measurement part, 21 ... Life determination part, 23 ... Notification part, 25 ... Illumination operation 27: Illumination control unit, 29 ... Power supply unit, 31 ... Lamp position operation unit, 33 ... Drive control unit, 35 ... Drive unit

Claims (9)

A metering lamp,
At least one spare lamp for the photometric lamp;
A support mechanism for supporting the photometric lamp and the at least one spare lamp so that their positions can be switched;
A measuring unit for measuring a usage time of the photometric lamp or an intensity of light generated from the photometric lamp;
When the measured usage time reaches the first time threshold value or when the measured light intensity decreases to the first intensity threshold value, the auxiliary lamp is supported by the auxiliary lamp.
An illumination control unit that lights up before the position is switched by the holding mechanism ;
An automatic analyzer comprising: The driving mechanism is further provided for driving the support mechanism according to an instruction from a user to switch a position of the photometric lamp and a position of a specific spare lamp among the at least one spare lamp. Automatic analyzer. 2. The automatic analyzer according to claim 1, wherein the support mechanism is configured to support the photometric lamp and the at least one spare lamp that are rotatable about an axis and arranged radially around the axis. The automatic analyzer according to claim 1, wherein the support mechanism supports the photometric lamp and the at least one spare lamp so as to be movable in parallel. 2. The automatic analyzer according to claim 1, wherein the support mechanism is configured to support the photometric lamp and the at least one spare lamp side by side so as to be rotatable around an axis and arranged on the same circumference around the axis. A metering lamp,
  At least one spare lamp for the photometric lamp;
  The position of the photometric lamp and the at least one spare lamp can be switched.
A supporting mechanism to support;
  The usage time of the photometric lamp or the intensity of light generated from the photometric lamp is measured.
A measurement unit;
  Triggered by the measured usage time reaching a first time threshold, or the measured
The spare lamp is turned on when the intensity of the received light has decreased to the first intensity threshold.
A lighting control unit,
  The measured usage time has reached a second time threshold that is slower than the first time threshold.
Or a second intensity at which the measured light intensity is lower than the first intensity threshold
Triggered by the drop in the threshold, the position of the photometric lamp and the at least one spare
A drive unit for switching a position of a specific spare lamp among the lamps for use
  An automatic analyzer comprising: The automatic analyzer according to claim 6 , wherein the illumination control unit turns off the photometric lamp when the position of the photometric lamp and the position of the specific spare lamp are switched. A metering lamp,
  At least one spare lamp for the photometric lamp;
  The position of the photometric lamp and the at least one spare lamp can be switched.
A supporting mechanism to support;
  The usage time of the photometric lamp or the intensity of light generated from the photometric lamp is measured.
A measurement unit;
  Triggered by the measured usage time reaching a first time threshold, or the measured
The spare lamp is turned on when the intensity of the received light has decreased to the first intensity threshold.
A lighting control unit,
  The measured usage time does not reach a second time threshold that is slower than the first time threshold.
If it is determined that the photometric lamp need not be replaced, the measured usage time is the second time.
A determination unit that determines that the photometric lamp should be replaced when the time threshold is reached,
  A notifying unit for notifying a determination result by the determining unit;
  An automatic analyzer comprising: A metering lamp,
  At least one spare lamp for the photometric lamp;
  The position of the photometric lamp and the at least one spare lamp can be switched.
A supporting mechanism to support;
  The usage time of the photometric lamp or the intensity of light generated from the photometric lamp is measured.
A measurement unit;
  Triggered by the measured usage time reaching a first time threshold, or the measured
The spare lamp is turned on when the intensity of the received light has decreased to the first intensity threshold.
A lighting control unit,
  The measured light intensity does not drop to a second intensity threshold that is lower than the first intensity threshold.
In this case, it is determined that the photometric lamp need not be replaced, and the measured light intensity is
A determination unit that determines that the photometric lamp should be replaced when the intensity threshold value is reduced to 2;
,
  A notifying unit for notifying a determination result by the determining unit;
  An automatic analyzer comprising:

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