A sequencing instrument power on / off device and a sequencing instrument system

Abstract

The utility model discloses a kind of switching of sequencer and sequencer system device. Sequencer includes sequencing equipment and sequencing controller;Switching device includes: power-on instruction input circuit;Switching control circuit, its first input end is electrically connected with power-on instruction input circuit;Power supply control circuit, its control end is electrically connected with the output end of switching control circuit, its input end is electrically connected with alternating voltage source, and its output end is electrically connected with the power supply end of sequencing equipment and the power supply end of sequencing controller respectively;And voltage detection circuit, its input end is electrically connected with the working signal end of sequencing controller, and its output end is electrically connected with the second input end of switching control circuit. The present scheme realizes sequencing equipment and sequencing controller stable switching simultaneously, avoids the system stability failure caused by sequencing controller abnormal power-down.

Description

Technical Field

[0001] This utility model relates to the field of switching technology, and more particularly to a power-on / off device and a sequencing system for a sequencer. Background Technology

[0002] Sequencing systems can be applied in biology, basic medicine, and clinical medicine, enabling the detection of the nucleotide composition and sequence of nucleic acid molecules. A sequencing system consists of a sequencer and an industrial control computer. The industrial control computer, as the core control unit of the sequencer, is responsible for coordinating hardware operation, data acquisition, and process management.

[0003] Current power control schemes for sequencing systems typically connect both the sequencer's power supply and the industrial control computer's power supply to a 220VAC AC mains power supply via a central switch. Controlling the opening and closing of this central switch allows both the sequencer and the industrial control computer to power on and off simultaneously. However, when the central switch is turned off, the industrial control computer experiences a momentary power outage—a sudden power failure. If the industrial control computer is abnormally shut down for an extended period, there is a risk of losing stored files, leading to a decrease in overall system stability. Utility Model Content

[0004] This invention provides a power-on / off device and system for a sequencer, enabling the sequencer and industrial control computer to be powered on and off stably at the same time, thus avoiding the decrease in system stability caused by long-term sudden power outages of the industrial control computer.

[0005] To achieve the above objectives, in a first aspect, this utility model provides a power-on / off device for a sequencer, the sequencer including sequencing equipment and a sequencing controller, the power-on / off device comprising:

[0006] Power-on command input circuit;

[0007] The power-on / off control circuit has its first input terminal electrically connected to the power-on command input circuit.

[0008] A power control circuit, whose control terminal is electrically connected to the output terminal of the power-on / off control circuit, whose input terminal is electrically connected to an AC voltage source, and whose output terminal is electrically connected to the power supply terminal of the sequencing equipment and the power supply terminal of the sequencing controller, respectively; and

[0009] The voltage detection circuit has its input terminal electrically connected to the working signal terminal of the sequencing controller, and its output terminal electrically connected to the second input terminal of the power-on / off control circuit.

[0010] Specifically, the power-on command input circuit outputs a power-on signal to the power-on / off control circuit, which then outputs the power-on signal to the power control circuit. The power control circuit controls the AC voltage source to output to the sequencing device and the sequencing controller based on the power-on signal. The voltage detection circuit detects and outputs the operating voltage signal of the sequencing controller to the power-on / off control circuit. The power-on / off control circuit also outputs a power-off signal to the power control circuit based on the operating voltage signal, so that the power control circuit disconnects the AC voltage source from the sequencing device and the sequencing controller based on the power-off signal.

[0011] Optionally, the power control circuit includes a relay control module and a relay module;

[0012] The control terminal of the relay control module is electrically connected to the output terminal of the power-on / off control circuit. The input terminal of the relay control module receives a fixed control voltage signal. The output terminal of the relay control module is electrically connected to the power control terminal of the relay module. The power signal terminal of the relay module is electrically connected to the AC voltage source. The output terminal of the relay module is electrically connected to the power supply terminal of the sequencing equipment and the power supply terminal of the sequencing controller.

[0013] Optionally, the relay control module includes: a starting unit and a relay control unit;

[0014] The input terminal of the starting unit is electrically connected to the output terminal of the power-on / off control circuit, the output terminal of the starting unit is electrically connected to the control terminal of the relay control unit, the input terminal of the relay control unit receives the fixed control voltage signal, and the output terminal of the relay control unit is electrically connected to the power control terminal of the relay module.

[0015] Optionally, the relay control unit includes: a first transistor and a first pull-up resistor;

[0016] The first terminal of the first transistor receives the fixed control voltage signal. The control terminal of the first transistor is electrically connected to the first terminal of the first pull-up resistor. The second terminal of the first pull-up resistor is electrically connected to the first terminal of the first transistor. The second terminal of the first transistor is electrically connected to the power control first terminal of the relay module. The control terminal of the first transistor is also electrically connected to the output terminal of the starting unit.

[0017] Optionally, the relay control module further includes: a filtering unit;

[0018] The first end of the filter unit is connected to the first end of the first transistor and the second end of the first pull-up resistor, respectively, and the second end of the filter unit is connected to the control end of the first transistor and the first end of the first pull-up resistor, respectively.

[0019] Optionally, the startup unit includes: a second transistor and a second pull-up resistor;

[0020] The control terminal of the second transistor is electrically connected to the output terminal of the power-on / off control circuit. The first terminal of the second transistor is electrically connected to the control terminal of the first transistor. The second terminal of the second transistor is electrically connected to the first terminal of the second pull-up resistor and the second power control terminal of the relay module. The second terminal of the second transistor is grounded. The second terminal of the second pull-up resistor is electrically connected to the control terminal of the second transistor.

[0021] Optionally, the relay control module further includes: a first current limiting unit;

[0022] The first current limiting unit is connected in series between the output terminal of the starting unit and the control terminal of the relay control unit.

[0023] Optionally, the relay control module further includes: a second current limiting unit;

[0024] The second current limiting unit is connected in series between the output terminal of the power-on / off control circuit and the input terminal of the start-up unit.

[0025] Optionally, the relay control module further includes: a buffer unit;

[0026] The buffer unit is electrically connected to the power control terminal of the relay module.

[0027] Optionally, the relay module includes: a coil unit and multiple normally open contact units;

[0028] The first end of the coil unit is connected to the output end of the relay control module, the second end of the coil unit is grounded, the first end of each normally open contact unit is electrically connected to the AC voltage source, and the second ends of any two normally open contact units are electrically connected to the power supply end of the sequencing device and the power supply end of the sequencing controller, respectively.

[0029] Optionally, the voltage detection circuit includes a voltage divider module and a voltage follower module;

[0030] The input terminal of the voltage divider module is electrically connected to the working signal terminal of the sequencing controller; the output terminal of the voltage divider module is electrically connected to the first input terminal of the voltage follower module; the second input terminal of the voltage follower module is electrically connected to the output terminal of the voltage follower module and to the second input terminal of the power-on / off control circuit.

[0031] Optionally, the voltage follower module includes a voltage follower chip;

[0032] The first input terminal of the voltage follower chip is electrically connected to the input terminal of the voltage divider module, the second input terminal of the voltage follower chip is electrically connected to the output terminal of the voltage follower chip, the first power supply terminal of the voltage follower chip is electrically connected to an external DC voltage source, and the second power supply terminal of the voltage follower chip is grounded.

[0033] Optionally, the voltage divider module includes: a first resistor and a second resistor;

[0034] The first end of the first resistor is electrically connected to the working signal terminal of the sequencing controller, the second end of the first resistor is electrically connected to the first end of the second resistor and electrically connected to the first input terminal of the voltage follower chip, and the second end of the second resistor is grounded.

[0035] Optionally, the voltage detection circuit further includes a current limiting module;

[0036] The current limiting module is connected in series to the output terminal of the voltage follower module and electrically connected to the second input terminal of the power on / off control circuit.

[0037] Optionally, the voltage detection circuit further includes: an overvoltage protection module;

[0038] The overvoltage protection module is connected in series to the output terminal of the voltage follower module and electrically connected to the second input terminal of the power-on / off control circuit.

[0039] Optionally, the overvoltage protection module includes a first unidirectional diode and a second unidirectional diode;

[0040] The first end of the first unidirectional diode is electrically connected to the second end of the second unidirectional diode and the output end of the voltage follower module. The second end of the first unidirectional diode is electrically connected to an external DC voltage source, and the first end of the second unidirectional diode is grounded.

[0041] Optionally, the power-on command input circuit includes a button module; the button module is electrically connected to the first input terminal of the power-on / off control circuit.

[0042] Optionally, the button module includes a button switch and a detection resistor;

[0043] The first terminal of the push-button switch is electrically connected to the first terminal of the sensing resistor, the second terminal of the push-button switch is grounded, and the second terminal of the sensing resistor is electrically connected to an external DC voltage source.

[0044] Optionally, the power-on / off control circuit includes a power-on / off control chip.

[0045] Optionally, the power-on / off control circuit further includes: a startup protection module;

[0046] The startup protection module is electrically connected to the startup terminal of the power-on / off control chip.

[0047] Optionally, the power-on / off control circuit further includes: an oscillation filter module;

[0048] The oscillation filter module is electrically connected to the clock terminal of the power-on / off control chip.

[0049] Optionally, the power-on / off device further includes: a switching power supply circuit;

[0050] The switching power supply circuit is electrically connected to the power supply terminal of the power on / off control circuit.

[0051] Optionally, the power-on / off device further includes: a complete power-on / off circuit;

[0052] The AC voltage source is electrically connected to the first output terminal of the power control circuit through the whole machine switching circuit, and the AC voltage source is also electrically connected to the switching power supply circuit through the whole machine switching circuit.

[0053] Secondly, embodiments of the present invention also provide a sequencer system, which includes a sequencer and a power-on / off device for the sequencer as described in the first aspect.

[0054] In this embodiment of the invention, a power-on signal is output from the power-on command input circuit to the power-on / off control circuit. The power-on / off control circuit then outputs the power-on signal to the power control circuit. Based on the power-on signal, the power control circuit controls the AC voltage source to output to the sequencing equipment and the sequencing controller, thus enabling simultaneous power-on of both the sequencing equipment and the sequencing controller. Simultaneously, the voltage detection circuit detects and outputs a power-off signal to the power-on / off control circuit based on the operating voltage signal of the sequencing controller. The power-on / off control circuit then outputs a power-off signal to the power control circuit, causing the power control circuit to disconnect the AC voltage source from the sequencing equipment and the sequencing controller. This ensures simultaneous and stable power-off of both the sequencing equipment and the sequencing controller, preventing system instability caused by sudden power failures of the sequencing controller.

[0055] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0056] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0057] Figure 1 This is a schematic diagram of the power-on / off device of a sequencer provided in an embodiment of the present invention;

[0058] Figure 2 This is a schematic diagram of the specific structure of a power-on / off device for a sequencer provided in an embodiment of this utility model;

[0059] Figure 3 This is a schematic diagram of the specific structure of another sequencer power-on / off device provided in this embodiment of the present invention;

[0060] Figure 4 This is a schematic diagram of the specific structure of another sequencer power-on / off device provided in this embodiment of the present invention;

[0061] Figure 5 This is a schematic diagram of a specific circuit diagram of a sequencer power-on / off device provided in an embodiment of this utility model;

[0062] Figure 6 This is a schematic diagram of the power-on / off device of another sequencer provided in this embodiment of the present invention;

[0063] Figure 7 This is a schematic diagram of the power-on / off device of another sequencer provided in this embodiment of the present invention;

[0064] Figure 8 This is a schematic diagram of the power-on / off device of another sequencer provided in this embodiment of the present invention;

[0065] Figure 9 This is a schematic diagram of the power-on / off device of another sequencer provided in this embodiment of the present invention;

[0066] Figure 10 This is a schematic diagram of the power-on / off device of another sequencer provided in this embodiment of the present invention;

[0067] Figure 11This is a schematic diagram of the power-on / off device of another sequencer provided in this embodiment of the present invention;

[0068] Figure 12 This is a schematic diagram of the power-on / off device of another sequencer provided in this embodiment of the present invention;

[0069] Figure 13 This is a schematic diagram of the structure of a sequencing system provided in an embodiment of this utility model. Detailed Implementation

[0070] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0071] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0072] Figure 1 This is a schematic diagram of the power-on / off device of a sequencer provided in an embodiment of this utility model, as shown below. Figure 1 As shown, the sequencer 01 includes a sequencing device A and a sequencing controller B; the power-on / off device of the sequencer 01 includes: a power-on command input circuit 10; a power-on / off control circuit 20, the first input terminal of which is electrically connected to the power-on command input circuit 10; a power control circuit 30, the control terminal of which is electrically connected to the output terminal of the power-on / off control circuit 20, the input terminal of which is electrically connected to the AC voltage source AVCC, and the output terminal of which is electrically connected to the power supply terminal of the sequencing device A and the power supply terminal of the sequencing controller B respectively; and a voltage detection circuit 40, the input terminal of which is electrically connected to the working signal terminal of the sequencing controller B, and the output terminal of which is electrically connected to the second input terminal of the power-on / off control circuit 20;

[0073] Specifically, the power-on command input circuit 10 outputs a power-on signal to the power-on / off control circuit 20, which in turn outputs the power-on signal to the power control circuit 30. The power control circuit 30 controls the AC voltage source AVCC to output to the sequencing device A and the sequencing controller B based on the power-on signal. The voltage detection circuit 40 detects and outputs the working voltage signal of the sequencing controller B to the power-on / off control circuit 20. The power-on / off control circuit 20 also outputs a power-off signal to the power control circuit 30 based on the working voltage signal, so that the power control circuit 30 disconnects the AC voltage source from the sequencing device A and the sequencing controller B based on the power-off signal.

[0074] The power-on command input circuit 10 can output a power-on signal according to power-on commands such as button power-on commands, voice power-on commands, and gesture power-on commands. In this embodiment, the type of power-on command is not limited.

[0075] The voltage detection circuit 40 detects the operating voltage signal of the sequencing controller B and outputs it to the power-on / off control circuit 20. Generally, when the sequencing controller B needs to be powered off via a power-off command (such as an on-screen power-off button or an external power switch), the sequencing controller B first shuts off its internal power. The voltage at the operating signal terminal connected to the voltage detection circuit 40 is less than or equal to a preset voltage signal, and the voltage detection circuit 40 detects that the operating voltage signal of the sequencing controller B is less than or equal to the preset voltage signal. If the sequencing controller B does not receive a power-off command, the voltage at the operating signal terminal connected to the voltage detection circuit 40 is the normal operating voltage signal, and the voltage detection circuit 40 detects that the operating voltage signal of the sequencing controller B is the normal operating voltage signal. The operating voltage signal of the sequencing controller B can be its USB voltage signal.

[0076] The power-on / off control circuit 20 outputs a power-off signal to the power control circuit 30 based on the operating voltage signal. Specifically, when the sequencing controller B is powered off by a power-off command, the voltage detection circuit 40 detects and outputs the operating voltage signal of the sequencing controller B to the power-on / off control circuit 20. The power-on / off control circuit 20 outputs a power-off signal to the power control circuit 30 when it determines that the operating voltage signal is less than or equal to a preset voltage signal. In some embodiments, when the sequencing controller B is powered off by a power-off command, the USB voltage signal of the sequencing controller B is zero. The voltage detection circuit 40 outputs the USB voltage signal to the power-on / off control circuit 20. The power-on / off control circuit determines that the received USB voltage signal of the sequencing controller B is zero and outputs a power-off signal to the power control circuit 30.

[0077] The power-on / off control circuit 20 can be an MCU control module, which can output power-on and power-off signals to the power control circuit 30. The power control circuit 30 can be any switching control circuit, such as a relay circuit or a transistor control circuit. Based on the power-on signal, the power control circuit 30 can simultaneously output the AC voltage source AVCC to sequencing device A and sequencing controller B. Based on the power-off signal, the power control circuit 30 can simultaneously disconnect the AC voltage source AVCC from sequencing device A and sequencing controller B. This embodiment does not limit the specific type of the power control circuit 30.

[0078] In this embodiment of the invention, the power-on command input circuit 10 outputs a power-on signal to the power-on control circuit 20, which in turn outputs the power-on signal to the power control circuit 30. The power control circuit 30 then controls the AC voltage source AVCC to output to the sequencing device A and the sequencing controller B according to the power-on signal, thus enabling the sequencing device A and the sequencing controller B to be powered on simultaneously.

[0079] In this embodiment of the invention, the voltage detection circuit 40 detects and outputs the operating voltage signal of the sequencing controller B to the power-on / off control circuit 20. When the operating voltage signal of the sequencing controller B is less than or equal to a preset voltage signal, the power-on / off control circuit 20 outputs a power-off signal to the power control circuit 30. The power control circuit 30 then disconnects the AC voltage source from the sequencing device A and the sequencing controller B according to the power-off signal. Thus, because the voltage detection circuit 40 detects that the operating voltage signal of the sequencing controller B is less than or equal to the preset voltage signal, the sequencing controller B first shuts down its internal power supply, thereby achieving simultaneous and stable shutdown of the sequencing device and the sequencing controller. This avoids the problem in the prior art where the entire device is switched off directly under the power-off command, thus directly disconnecting the AC voltage source from the sequencing controller. Before disconnecting the AC voltage source from the sequencing controller, the sequencing controller B does not perform a self-check to cut off its own internal power supply, leading to abnormal power loss of the sequencing controller B and resulting in system stability failure.

[0080] Optionally, based on the above embodiments, the power control circuit 30 can be further refined. Figure 2 This is a schematic diagram of the specific structure of a power-on / off device for a sequencer provided in an embodiment of this utility model, as shown below. Figure 2 As shown, the power control circuit 30 includes a relay control module 31 and a relay module 32.

[0081] The control terminal of the relay control module 31 is electrically connected to the output terminal of the power-on / off control circuit 20. The input terminal of the relay control module 31 receives a fixed control voltage signal. The output terminal of the relay control module 31 is electrically connected to the power control terminal of the relay module 32. The power signal terminal of the relay module 32 is electrically connected to the AC voltage source AVCC. The output terminal of the relay module 32 is electrically connected to the power terminal of the sequencing device A and the power terminal of the sequencing controller B.

[0082] Specifically, the power-on / off control circuit 20 outputs a power-on signal to the relay control module 31. When the relay control module 31 receives the power-on signal, it is in a closed state, thereby outputting a fixed control voltage signal (e.g., a 24V control voltage signal) to the power control terminal of the relay module 32. The relay module 32 then starts working, which in turn causes the AC voltage source AVCC at the power signal terminal of the relay module 32 to be output to the output terminal of the relay module 32. This outputs the AC voltage source AVCC to sequencing device A and sequencing controller B, enabling sequencing device A and sequencing controller B to be powered on simultaneously.

[0083] The power-on / off control circuit 20 outputs a power-off signal to the relay control module 31. When the relay control module 31 receives the power-off signal, it is in an open state, thus preventing the output of a fixed control voltage signal (e.g., a 24V control voltage signal) to the power control terminal of the relay module 32. Consequently, the relay module 32 cannot start working, and therefore cannot output the AC voltage source AVCC from the power signal terminal of the relay module 32 to the output terminal of the relay module 32. Thus, the AC voltage source AVCC cannot be output to sequencing device A and sequencing controller B, thereby achieving simultaneous and stable power-off of sequencing device A and sequencing controller B.

[0084] In addition, this embodiment uses relay control module 31 and relay module 32 as power control circuit 30, which can effectively achieve high and low voltage electrical isolation and avoid interference from high voltage AC voltage source to control signals (switching signals and shutdown signals).

[0085] Optionally, the relay control module 31 in the above embodiments can be further refined. Figure 3 This is a schematic diagram of the specific structure of another sequencer power-on / off device provided in this embodiment of the present invention. The relay control module 31 includes: a start-up unit 311 and a relay control unit 312; the input terminal of the start-up unit 311 is electrically connected to the output terminal of the power-on / off control circuit 20, the output terminal of the start-up unit 311 is electrically connected to the control terminal of the relay control unit 312, the input terminal of the relay control unit 312 receives a fixed control voltage signal, and the output terminal of the relay control unit 312 is electrically connected to the power control terminal of the relay module 32.

[0086] The startup unit 311 can be a single transistor or a combination of multiple transistors.

[0087] Specifically, the startup unit 311 can output a startup control signal to the relay control unit 312 according to the startup signal output by the power-on control circuit 20. Under the startup control signal, the relay control unit 312 is in a closed state and outputs a fixed control voltage signal (such as a 24V control voltage signal) to the power control terminal of the relay module 32. The relay module 32 starts working, so that the AC voltage source AVCC of the power signal terminal of the relay module 32 is output to the output terminal of the relay module 32, thereby outputting the AC voltage source AVCC to the sequencing device A and the sequencing controller B, realizing the simultaneous startup of the sequencing device A and the sequencing controller B.

[0088] If the startup unit 311 cannot output a startup control signal to the relay control unit 312 based on the shutdown signal output by the power-on / off control circuit 20, the relay control unit 312 will be in the off state and will not be able to output a fixed control voltage signal (e.g., 24V control voltage signal) to the power control terminal of the relay module 32. The relay module 32 will not start working, and thus will not be able to output the AC voltage source AVCC to sequencing device A and sequencing controller B, thereby achieving the simultaneous shutdown of sequencing device A and sequencing controller B.

[0089] Optional Figure 4 This is a schematic circuit diagram of the power-on / off device of another sequencer provided in this embodiment of the present invention, as shown below. Figure 4 As shown, the relay control unit 312 includes: a first transistor Q1 and a first pull-up resistor R1; the first terminal of the first transistor Q1 receives a fixed control voltage signal, the control terminal of the first transistor Q1 is electrically connected to the first terminal of the first pull-up resistor R1, the second terminal of the first pull-up resistor R1 is electrically connected to the first terminal of the first transistor Q1, the second terminal of the first transistor Q1 is electrically connected to the first power control terminal of the relay module 32, and the control terminal of the first transistor Q1 is also electrically connected to the output terminal of the starting unit 311.

[0090] When the startup unit 311 outputs a drive control signal, the first transistor Q1 is turned on, outputting a fixed control voltage signal to the relay module 32, thereby enabling the relay module 32 to start working. The first pull-up resistor R1 can maintain the control terminal of the first transistor Q1 at a high level when there is no startup control signal, that is, it can maintain the first transistor Q1 in an off state.

[0091] Optional, continue to refer to Figure 4The relay control module 31 further includes a filter unit 313; the first end of the filter unit 313 is connected to the first end of the first transistor Q1 and the second end of the first pull-up resistor R1, and the second end of the filter unit 313 is connected to the control end of the first transistor Q1 and the first end of the first pull-up resistor R1.

[0092] The filter unit 313 may include a single capacitor or multiple capacitors.

[0093] The filter unit 313 serves to filter signals, preventing the first transistor Q1 from turning on when there is no start control signal. It also ensures that a fixed control voltage signal is output to the relay module 32 when there is a start control signal, thus guaranteeing the normal start-up of the relay module 32.

[0094] In some embodiments, the filter unit 313 may include a first capacitor C1; the first end of the first capacitor C1 is electrically connected to the second end of the first pull-up resistor R1, and the second end of the first capacitor C1 is electrically connected to the first end of the first pull-up resistor R1.

[0095] Optional Figure 5 This is a schematic circuit diagram of the power-on / off device of another sequencer provided in this embodiment of the present invention, as shown below. Figure 5 As shown, the startup unit 311 includes: a second transistor Q2 and a second pull-up resistor R2; the control terminal of the second transistor Q2 is electrically connected to the output terminal of the power-on / off control circuit 20, the first terminal of the second transistor Q2 is electrically connected to the control terminal of the first transistor Q1, the second terminal of the second transistor Q2 is electrically connected to the first terminal of the second pull-up resistor R2 and the second power control terminal of the relay module 32, and the second terminal of the second transistor Q2 is grounded, and the second terminal of the second pull-up resistor R2 is electrically connected to the control terminal of the second transistor Q2.

[0096] Specifically, the second transistor Q2 can be a bipolar transistor; the bipolar transistor can be a PNP transistor.

[0097] When the power-on signal output by the power-on control circuit 20 is a low-level signal, the second transistor Q2 is turned on. When the second transistor Q2 is turned on, it pulls down the control terminal of the first transistor Q1. The first transistor Q1 is a P-type transistor, thus turning on the first transistor Q1 and outputting a fixed control voltage signal to the relay module 32.

[0098] When the power-off signal output by the power-on / off control circuit 20 is a high-level signal, the second transistor Q2 is turned off. When the second transistor Q2 is turned off, it cannot pull down the control terminal of the first transistor Q1, thus causing the first transistor Q1 to be turned off. The first transistor Q1 cannot output the fixed control voltage signal to the relay module 32.

[0099] When the power-on / off control circuit 20 outputs a power-off signal, the second pull-up resistor R2 serves to ensure that the second transistor Q2 remains in the off state.

[0100] It is understandable that when the power-on signal is a high-level signal and the power-off signal is a low-level signal, the types of the first transistor Q1 and the second transistor Q2 can be changed accordingly. This embodiment does not limit the types of the first transistor Q1 and the second transistor Q2.

[0101] Optional, continue to refer to Figure 5 The relay control module 31 further includes: a first current limiting unit 314; the first current limiting unit 314 is connected in series between the output terminal of the starting unit 311 (which is the first terminal of the second transistor Q2 in this embodiment) and the control terminal of the relay control unit 312 (which is the control terminal of the first transistor Q1 in this embodiment).

[0102] The first current limiting unit 314 can limit the current to prevent the first transistor Q1 from being damaged due to excessive current when the second transistor Q2 is turned on.

[0103] The first current limiting unit 314 can be a single resistor or a combination of multiple resistors; no specific limitation is made in this regard.

[0104] In some embodiments, the first current limiting unit 314 may include a third resistor R3; the third resistor R3 is connected in series between the first terminal of the second transistor Q2 and the control terminal of the first transistor Q1.

[0105] Optional, continue to refer to Figure 5 The relay control module 31 also includes a second current limiting unit 315; the second current limiting unit 315 is connected in series between the output terminal of the power-on / off control circuit 20 and the input terminal of the start-up unit 311 (which is the second terminal of the second transistor Q2 in this embodiment).

[0106] The second current limiting unit 315 can limit the current and prevent the signal output by the power-on / off control circuit 20 from being too large and damaging the second transistor Q2.

[0107] The second current limiting unit 315 can be a single resistor or a combination of multiple resistors; no specific limitation is made in this regard.

[0108] In some embodiments, the second current limiting unit 315 may include a fourth resistor R4; the fourth resistor R4 is connected in series between the second terminal of the second transistor Q2 and the output terminal of the power-on / off control circuit 20.

[0109] Optional, continue to refer to Figure 5The relay control module 31 also includes a buffer unit 316; the buffer unit 316 is electrically connected to the power control terminal of the relay module 32.

[0110] The buffer unit 316 is connected in parallel with the inductor coil in the relay module 32. Its function is to prevent sudden changes in the current in the relay module 32 and to provide a power dissipation path for the reverse electromotive force. That is, the inductor coil in the relay module 32 can provide a continuous current to the relay module 32 through the buffer unit 316 to prevent sudden changes in the current of the relay module 32 and to smooth the current.

[0111] In some embodiments, the buffer unit 316 may be a unidirectional diode D0, with the first end of the unidirectional diode D0 electrically connected to the first power control terminal of the relay module 32; the first end of the unidirectional diode D0 is also electrically connected to the second power control terminal of the relay module 32.

[0112] Optionally, this embodiment further refines the relay module 32. Figure 6 This is a schematic circuit diagram of the power-on / off device of another sequencer provided in this embodiment of the present invention, as shown below. Figure 6 As shown, the relay module 32 includes: a coil unit 321 and multiple normally open contact units 322; the first end of the coil unit 321 is connected to the output terminal of the relay control module 31 (which is the second end of the first transistor Q1 in this embodiment), the second end of the coil unit 321 is grounded, the first end of each normally open contact unit 322 is electrically connected to the AC voltage source AVCC, and the second ends of any two normally open contact units are electrically connected to the power supply terminal A of the sequencing device and the power supply terminal B of the sequencing controller, respectively.

[0113] When the first transistor Q1 in the relay control module 31 is turned on, a fixed control voltage signal is output to the coil unit 321, which is energized. This provides a control voltage to the relay module 32, causing the relay module 32 to start working. This causes each of the multiple normally open contact units 322 to close. The second end of any two normally open contact units is electrically connected to the power supply terminal A of the sequencing device and the power supply terminal B of the sequencing controller, respectively, thereby turning on the sequencing device A and the sequencing controller B simultaneously.

[0114] When the first transistor Q1 in the relay control module 31 is turned off, the fixed control voltage signal cannot be output to the coil unit 321, the coil unit 321 is not energized, so the relay module does not start working, thereby keeping each normally open contact unit 322 in the normally open state, and then causing the sequencing device A and the sequencing controller B to shut down simultaneously.

[0115] Optionally, the voltage detection circuit 40 can be further refined. Figure 7This is a schematic circuit diagram of the power-on / off device of another sequencer provided in this embodiment of the present invention, as shown below. Figure 7 As shown, the voltage detection circuit 40 includes a voltage divider module 41 and a voltage follower module 42; the input terminal of the voltage divider module 41 is electrically connected to the working signal terminal of the sequencing controller B, the output terminal of the voltage divider module 41 is electrically connected to the first input terminal of the voltage follower module 42, the second input terminal of the voltage follower module 42 is electrically connected to the output terminal of the voltage follower module 42, and is also electrically connected to the second input terminal of the power-on / off control circuit 20.

[0116] When the sequencing controller B does not receive a shutdown command and shuts down, the voltage at the working signal terminal of the sequencing controller B is the normal working voltage signal. The voltage divider module 41 divides the voltage at the working signal terminal of the sequencing controller B and outputs the first divided voltage to the voltage follower module 42. The voltage follower module 42 outputs the first divided voltage to the power-on / off control circuit 20, and the power-on / off control circuit 20 receives the power-on hold signal.

[0117] When the sequencing controller B receives the shutdown command and shuts down, the voltage at the working signal terminal of the sequencing controller B is less than or equal to the preset voltage. The voltage divider module 41 divides the voltage at the working signal terminal of the sequencing controller B and outputs the second divided voltage to the voltage follower module 42. The voltage follower module 42 outputs the second divided voltage to the power-on / off control circuit 20, which then receives the shutdown signal.

[0118] Optional Figure 8 This is a schematic circuit diagram of the power-on / off device of another sequencer provided in this embodiment of the present invention, as shown below. Figure 8 As shown, the voltage follower module 42 includes a voltage follower chip U1; the first input terminal of the voltage follower chip U1 is electrically connected to the input terminal of the voltage divider module 41, the second input terminal of the voltage follower chip U1 is electrically connected to the output terminal of the voltage follower chip U1, the first power supply terminal of the voltage follower chip U1 is electrically connected to an external DC voltage source ACC, and the second power supply terminal of the voltage follower chip U1 is grounded.

[0119] Specifically, the voltage follower chip U1 can be an integrated or discrete component, and this embodiment does not limit this. When the sequencing controller B does not receive a shutdown command to shut down, the voltage at the working signal terminal of the sequencing controller B is the normal operating voltage signal. The voltage divider module 41 divides the voltage at the working signal terminal of the sequencing controller B and outputs the first divided voltage to the voltage follower chip U1. The voltage follower chip U1 outputs the first divided voltage to the power-on / off control circuit 20 after internal output processing.

[0120] When the sequencing controller B receives the shutdown command and shuts down, the voltage at the working signal terminal of the sequencing controller B is less than or equal to the preset voltage. The voltage divider module 41 divides the voltage at the working signal terminal of the sequencing controller B and outputs the second divided voltage to the voltage follower chip U1. The voltage follower chip U1 outputs the second divided voltage to the power-on / off control circuit 20 after internal output processing.

[0121] Optionally, continuing with reference to 8, the voltage divider module 41 includes: a first resistor R11 and a second resistor R12; the first end of the first resistor R11 is electrically connected to the working signal terminal of the sequencing controller B, the first end of the first resistor R11 is electrically connected to the first end of the second resistor R12, and is electrically connected to the first input terminal of the voltage follower chip U1; the second end of the second resistor R12 is grounded.

[0122] Among them, the first resistor R11 and the second resistor R12 can be set with a suitable resistance ratio, so as to divide and process the voltage Vbus output by the working signal terminal of the sequencing controller B and output it to the first input terminal of the voltage follower chip U1. The voltage follower chip U1 then outputs different divided voltage signals to the power-on / off control circuit 20.

[0123] Optionally, continuing with reference to 8, it also includes: a current limiting module 43; the current limiting module 43 is connected in series to the output terminal of the voltage follower module 42 and electrically connected to the second input terminal of the power on / off control circuit 20.

[0124] In some embodiments, the current limiting module 43 includes a seventh resistor R7, which is connected in series between the output of the voltage follower chip U1 and the external DC voltage source VCC.

[0125] Among them, the current limiting module 43 can limit the current of different voltage divider signals output by the voltage follower chip U1.

[0126] Optionally, continuing with reference to 8, the voltage detection circuit 40 also includes: an overvoltage protection module 44; the overvoltage protection module 44 is connected in series between the output terminal of the voltage follower chip U1 and the external DC voltage source VCC.

[0127] The external DC voltage source VCC can be 3.3V. An overvoltage protection module 44 is set up so that when the first input terminal of the voltage follower chip U1 receives an unexpected high voltage, the output voltage of the voltage follower chip U1 can be clamped to the external DC voltage source ACC. This avoids the output voltage of the voltage follower chip U1 from suddenly increasing and causing abnormal output.

[0128] Optionally, referring to 8, the overvoltage protection module 44 includes a first unidirectional diode D1 and a second unidirectional diode D2; the first end of the first unidirectional diode D1 is electrically connected to the second end of the second unidirectional diode D2 and the output end of the voltage follower module 42, and the second end of the first unidirectional diode D1 is electrically connected to the external DC voltage source ACC; the first end of the second unidirectional diode D2 is grounded.

[0129] Specifically, in this embodiment, the first unidirectional diode D1 and the second unidirectional diode D2 serve as bidirectional switching diodes, which can clamp the output voltage of the voltage follower chip U1 to the external DC voltage source ACC when the first input terminal of the voltage follower chip U1 receives an unexpected high voltage.

[0130] Optionally, the power-on command input circuit 10 can be further refined. Figure 9 This is a schematic circuit diagram of the power-on / off device of another sequencer provided in this embodiment of the present invention, as shown below. Figure 9 As shown, the power-on command input circuit 10 includes a button module 11; the button module 11 is electrically connected to the first input terminal of the power-on / off control circuit 20.

[0131] In this embodiment, the power-on command input circuit 10 uses a button module 11, which can receive button commands; using the button module 11 as the power-on command input circuit 10 can improve the reliability of the power-on signal output.

[0132] Optional Figure 10 This is a schematic circuit diagram of the power-on / off device of another sequencer provided in this embodiment of the present invention, as shown below. Figure 10 As shown, the button module 11 includes a button switch K1 and a detection resistor R0. The first end of the button switch K1 is electrically connected to the first end of the detection resistor R0, the second end of the button switch K1 is grounded, and the second end of the detection resistor R0 is electrically connected to an external DC voltage source ACC.

[0133] When the operator presses the button switch K1, the button switch K1 closes, thereby outputting the voltage divided by the external DC voltage source ACC through the detection resistor R0 to the power-on control circuit 20. The power-on control circuit 20 then outputs the divided voltage as a power-on signal to the power control circuit 30. The power control circuit 30 then controls the AC voltage source AVCC to output to the sequencing device A and the sequencing controller B according to the power-on signal, thus realizing the simultaneous power-on of the sequencing device A and the sequencing controller B.

[0134] Optional Figure 11 This is a circuit diagram of a power on / off control circuit 20 provided in an embodiment of this utility model, as shown below. Figure 11 As shown, the power on / off control circuit 20 includes a power on / off control chip 21.

[0135] The power-on / off control chip 21 can be an integrated or discrete component, and the power-on / off control chip 21 can output power-on and power-off signals to the power control circuit 30.

[0136] Optional, continue to refer to Figure 11 The power on / off control circuit 20 also includes a startup protection module 22; the startup protection module 22 is electrically connected to the startup terminal of the power on / off control chip 21. The startup protection module 22 can play a protective role during the startup process of the power on / off control chip 21; the startup protection module 22 can be a single protection resistor or multiple protection resistors.

[0137] Optional, continue to refer to Figure 11 The power on / off control circuit 20 also includes an oscillation filter module 23; the oscillation filter module 23 is electrically connected to the clock terminal of the power on / off control chip 21.

[0138] The oscillation filtering module 23 can perform oscillation filtering on the clock signal corresponding to the power-on or power-off signal during the operation of the power-on control chip 21. In some embodiments, the oscillation filtering module 23 may include a single filter resistor or multiple filter resistors.

[0139] Optional Figure 12 This is a schematic circuit diagram of the power-on / off device of another sequencer provided in this embodiment of the present invention, as shown below. Figure 12 As shown, the power-on / off device also includes a switching power supply circuit 50; the switching power supply circuit 50 is electrically connected to the power supply terminal of the power-on / off control circuit 20. The switching power supply circuit 50 can be a Buck-Boost circuit, which can provide operating voltage to the power-on / off control circuit 20.

[0140] Optional, continue to refer to Figure 12 The power-on / off device also includes: a complete power switch circuit 60; an AC voltage source is electrically connected to the first output terminal of the power control circuit 30 through the complete power switch circuit 60, and the AC voltage source is also electrically connected to the switching power supply circuit 20 through the complete power switch circuit 60. The complete power switch circuit 60 can be normally open, and it can output the AC voltage source AVCC to the relay module 32.

[0141] Based on the same inventive concept, this utility model also provides a sequencing system. Figure 13 This is a schematic diagram of the structure of a sequencer according to an embodiment of the present invention, as shown below. Figure 13As shown, the sequencer system 100 includes a sequencer 01 and a power-on / off device 02 for the sequencer described in the above embodiments. The sequencer 01 includes a sequencing device A and a sequencing controller B. The sequencing device A includes a sequencing power supply A1 and a sequencing device body A2 electrically connected to the sequencing power supply A1; the sequencing controller B includes a sequencing controller power supply B1 and a sequencing controller body B2 electrically connected to the sequencing controller power supply B1. The power control circuit 30 outputs or disconnects the AC voltage source AVCC to the sequencing device A and the sequencing controller B; that is, it outputs or disconnects the AC voltage source AVCC to the sequencing power supply A1 and the sequencing controller power supply B1, thereby outputting or disconnecting the AC voltage source AVCC to the sequencing device body A2 and the sequencing controller body B2 respectively. Since this embodiment includes the power-on / off device 02 for the sequencer described in any of the above embodiments, it also possesses the beneficial effects of the above embodiments, which will not be repeated here; the sequencing controller B can be an IPC computer.

[0142] A sequencing system is an analytical instrument used in basic medical fields. It can perform sequencing analysis and fragment analysis, and can determine both known and unknown sequences. It can detect genes related to pathogenic microorganisms, infectious diseases, genetic diseases, and tumors.

[0143] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A power-on / off device for a sequencer, the sequencer comprising sequencing equipment and a sequencing controller, characterized in that... The power on / off device includes: Power-on command input circuit; The power-on / off control circuit has its first input terminal electrically connected to the power-on command input circuit. A power control circuit, whose control terminal is electrically connected to the output terminal of the power-on / off control circuit, whose input terminal is electrically connected to an AC voltage source, and whose output terminal is electrically connected to the power supply terminal of the sequencing equipment and the power supply terminal of the sequencing controller, respectively; and The voltage detection circuit has its input terminal electrically connected to the working signal terminal of the sequencing controller, and its output terminal electrically connected to the second input terminal of the power-on / off control circuit. Specifically, the power-on command input circuit outputs a power-on signal to the power-on / off control circuit, which then outputs the power-on signal to the power control circuit. The power control circuit controls the AC voltage source to output to the sequencing device and the sequencing controller based on the power-on signal. The voltage detection circuit detects and outputs the operating voltage signal of the sequencing controller to the power-on / off control circuit. The power-on / off control circuit also outputs a power-off signal to the power control circuit based on the operating voltage signal, so that the power control circuit disconnects the AC voltage source from the sequencing device and the sequencing controller based on the power-off signal.

2. The power on / off device according to claim 1, characterized in that... The power control circuit includes a relay control module and a relay module. The control terminal of the relay control module is electrically connected to the output terminal of the power-on / off control circuit. The input terminal of the relay control module receives a fixed control voltage signal. The output terminal of the relay control module is electrically connected to the power control terminal of the relay module. The power signal terminal of the relay module is electrically connected to the AC voltage source. The output terminal of the relay module is electrically connected to the power supply terminal of the sequencing equipment and the power supply terminal of the sequencing controller.

3. The power on / off device according to claim 2, characterized in that... The relay control module includes: a starting unit and a relay control unit; The input terminal of the starting unit is electrically connected to the output terminal of the power-on / off control circuit, the output terminal of the starting unit is electrically connected to the control terminal of the relay control unit, the input terminal of the relay control unit receives the fixed control voltage signal, and the output terminal of the relay control unit is electrically connected to the power control terminal of the relay module. Optionally, the relay control unit includes: a first transistor and a first pull-up resistor; The first terminal of the first transistor receives the fixed control voltage signal, the control terminal of the first transistor is electrically connected to the first terminal of the first pull-up resistor, the second terminal of the first pull-up resistor is electrically connected to the first terminal of the first transistor, the second terminal of the first transistor is electrically connected to the power control first terminal of the relay module, and the control terminal of the first transistor is also electrically connected to the output terminal of the starting unit. Optionally, the relay control module further includes: a filtering unit; The first end of the filter unit is connected to the first end of the first transistor and the second end of the first pull-up resistor, respectively; the second end of the filter unit is connected to the control end of the first transistor and the first end of the first pull-up resistor, respectively. Optionally, the startup unit includes: a second transistor and a second pull-up resistor; The control terminal of the second transistor is electrically connected to the output terminal of the power-on / off control circuit. The first terminal of the second transistor is electrically connected to the control terminal of the first transistor. The second terminal of the second transistor is electrically connected to the first terminal of the second pull-up resistor and the second power control terminal of the relay module. The second terminal of the second transistor is grounded. The second terminal of the second pull-up resistor is electrically connected to the control terminal of the second transistor.

4. The power on / off device according to claim 3, characterized in that... The relay control module further includes: a first current limiting unit; The first current limiting unit is connected in series between the output terminal of the starting unit and the control terminal of the relay control unit; Optionally, the relay control module further includes: a second current limiting unit; The second current limiting unit is connected in series between the output terminal of the power-on / off control circuit and the input terminal of the start-up unit; Optionally, the relay control module further includes: a buffer unit; The buffer unit is electrically connected to the power control terminal of the relay module.

5. The power on / off device according to claim 2, characterized in that... The relay module includes: a coil unit and multiple normally open contact units; The first end of the coil unit is connected to the output end of the relay control module, the second end of the coil unit is grounded, the first end of each normally open contact unit is electrically connected to the AC voltage source, and the second ends of any two normally open contact units are electrically connected to the power supply end of the sequencing device and the power supply end of the sequencing controller, respectively.

6. The power on / off device according to claim 1, characterized in that... The voltage detection circuit includes a voltage divider module and a voltage follower module; The input terminal of the voltage divider module is electrically connected to the working signal terminal of the sequencing controller, the output terminal of the voltage divider module is electrically connected to the first input terminal of the voltage follower module, the second input terminal of the voltage follower module is electrically connected to the output terminal of the voltage follower module, and is also electrically connected to the second input terminal of the power-on / off control circuit.

7. The power on / off device according to claim 6, characterized in that... The voltage follower module includes a voltage follower chip; The first input terminal of the voltage follower chip is electrically connected to the input terminal of the voltage divider module, the second input terminal of the voltage follower chip is electrically connected to the output terminal of the voltage follower chip, the first power supply terminal of the voltage follower chip is electrically connected to an external DC voltage source, and the second power supply terminal of the voltage follower chip is grounded. Optionally, the voltage divider module includes: a first resistor and a second resistor; The first end of the first resistor is electrically connected to the working signal terminal of the sequencing controller, the second end of the first resistor is electrically connected to the first end of the second resistor and electrically connected to the first input terminal of the voltage follower chip, and the second end of the second resistor is grounded. Optionally, the voltage detection circuit further includes: a current limiting module; The current limiting module is connected in series to the output terminal of the voltage follower module and electrically connected to the second input terminal of the power-on / off control circuit. Optionally, the voltage detection circuit further includes: an overvoltage protection module; The overvoltage protection module is connected in series to the output terminal of the voltage follower module and electrically connected to the second input terminal of the power-on / off control circuit. Optionally, the overvoltage protection module includes a first unidirectional diode and a second unidirectional diode; The first end of the first unidirectional diode is electrically connected to the second end of the second unidirectional diode and the output end of the voltage follower module. The second end of the first unidirectional diode is electrically connected to an external DC voltage source, and the first end of the second unidirectional diode is grounded.

8. The power on / off device according to claim 1, characterized in that... The power-on command input circuit includes a button module; the button module is electrically connected to the first input terminal of the power-on / off control circuit. Optionally, the button module includes a button switch and a detection resistor; The first terminal of the push-button switch is electrically connected to the first terminal of the detection resistor, the second terminal of the push-button switch is grounded, and the second terminal of the detection resistor is electrically connected to an external DC voltage source. Optionally, the power-on / off control circuit includes: a power-on / off control chip; Optionally, the power-on / off control circuit further includes: a startup protection module; The startup protection module is electrically connected to the startup terminal of the power-on / off control chip; Optionally, the power-on / off control circuit further includes: an oscillation filter module; The oscillation filter module is electrically connected to the clock terminal of the power-on / off control chip.

9. The power on / off device according to claim 8, characterized in that... The power-on / off device further includes: a switching power supply circuit; The switching power supply circuit is electrically connected to the power supply terminal of the power on / off control circuit; Optionally, the power-on / off device further includes: a complete power-on / off circuit; The AC voltage source is electrically connected to the first output terminal of the power control circuit through the whole machine switching circuit, and the AC voltage source is also electrically connected to the switching power supply circuit through the whole machine switching circuit.

10. A sequencer system, characterized in that, Includes a sequencer and a power-on / off device for the sequencer as described in any one of claims 1-9.

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