Simulator for testing pulse oximeter

Abstract

The utility model provides a simulation instrument for testing a pulse oximeter, the simulation instrument comprises a sensor assembly, an ambient light acquisition assembly and a control assembly, the sensor assembly is suitable for stretching into a clamping part, and the sensor assembly comprises a first photoelectric sensor and a first light emitting diode; the first photoelectric sensor is used for converting a first optical signal emitted by the second light-emitting diode into a first electric signal, the first light-emitting diode is used for emitting a third optical signal to the third photoelectric sensor, and the ambient light collection assembly comprises a second photoelectric sensor which is used for collecting ambient light around; and the control assembly comprises a receiving module, an input module, a preprocessing module, a compensation module and an output module. According to the simulator for testing the pulse oximeter, the ambient light acquisition assembly and the compensation module are arranged, so that the interference of ambient light is reduced, and the accuracy and the reliability of a test result are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oximeter testing equipment, in particular to a simulator for testing a pulse oximeter. Background Art

[0002] In existing technology, simulators for testing oximeters work by receiving red and near-infrared light signals from a pulse oximeter, converting them into electrical signals and transmitting them to a processor. The processor then calculates these signals and a preset blood oxygen value, then outputs an electrical signal to the simulator's transmitter module, simulating the light signal passing through the human body. The pulse oximeter then processes and calculates the actual blood oxygen value. The oximeter's accuracy can be tested by comparing the actual blood oxygen value with the preset value.

[0003] However, during the testing process of the pulse oximeter, ambient light becomes a major factor affecting the test accuracy. Existing simulators do not take this interference factor into account, which affects the accuracy of the test results. Utility Model Content

[0004] The utility model provides a simulator for testing a pulse oximeter, which is used to solve the defect of inaccurate test results in the prior art, reduce the influence of ambient light on the test results, and improve the accuracy of the test results.

[0005] The utility model provides a simulator for testing a pulse oximeter. The pulse oximeter is provided with an openable and closable clamping portion, wherein a second light emitting diode and a third photoelectric sensor are arranged opposite to each other. The simulator comprises:

[0006] a sensor assembly adapted to extend into the clamping portion, the sensor assembly comprising a first photoelectric sensor and a first light-emitting diode, the first photoelectric sensor being configured to convert a first optical signal emitted by the second light-emitting diode into a first electrical signal, the first light-emitting diode being configured to emit a third optical signal to the third photoelectric sensor;

[0007] An ambient light collection component, the ambient light collection component comprising a second photoelectric sensor, the second photoelectric sensor being used to collect ambient light and convert the ambient light into a second electrical signal;

[0008] A control component, comprising a receiving module, an input module, a preprocessing module, a compensation module, and an output module;

[0009] The receiving module is configured to receive the first electrical signal and the second electrical signal;

[0010] The input module is configured to send an input signal to the pre-processing module in response to an input parameter;

[0011] The preprocessing module is configured to generate a preprocessing signal based on the first electrical signal and the input signal;

[0012] The compensation module is configured to generate a compensation signal based on the second electrical signal;

[0013] The output module is configured to generate a third electrical signal based on the pre-processed signal and the compensation signal, and the first light emitting diode is capable of converting the third electrical signal into the third optical signal.

[0014] In some embodiments, the sensor assembly includes a sensor housing and a PCB board, the PCB board includes an inner end and a protruding end, the inner end is arranged in the sensor housing, the protruding end extends outside the sensor housing, and a plurality of the first photoelectric sensors are arranged at intervals at the protruding end.

[0015] In some embodiments, the second photosensor is disposed at the protruding end, and the second photosensor and the first photosensor are located on the same side of the protruding end.

[0016] In some embodiments, the second photosensor is disposed at the inner end, and the second photosensor and the first photosensor are located on the same side of the PCB board;

[0017] The sensor housing is provided with a light-shielding portion and a light-transmitting portion, and the light-transmitting portion corresponds to the second photoelectric sensor.

[0018] In some embodiments, the second photoelectric sensor is disposed in the sensor housing, and the second photoelectric sensor and the first photoelectric sensor are located on the same side of the PCB board;

[0019] The sensor housing is provided with a light shielding portion and a light transmitting portion, the second photoelectric sensor corresponds to the light transmitting portion, and the second photoelectric sensor is provided with a transparent adhesive portion, the adhesive portion is adhesively connected to the light transmitting portion.

[0020] In some embodiments, the second photosensor is disposed at the inner end, and the second photosensor and the first photosensor are located on the same side of the PCB board;

[0021] The sensor housing is a light-transmitting sensor housing.

[0022] In some embodiments, a bonding portion is provided on one side of the second photoelectric sensor, and the second photoelectric sensor is connected to the outer surface of the sensor housing or the protruding end through the bonding portion.

[0023] In some embodiments, the control assembly includes a control housing, a light-transmitting plate is provided on the control housing, and the second photoelectric sensor is provided in the control housing and is bonded to the light-transmitting plate via a transparent adhesive sheet;

[0024] Or the ambient light collection component includes a light collection board, on which a second photoelectric sensor is provided, and the light collection board is arranged outside the control housing, or the light collection board is arranged inside the control housing and opposite to the light-transmitting board.

[0025] In some embodiments, the ambient light collection component includes a light collection board, a second photoelectric sensor is provided on the light collection board, the light collection board is arranged on the outside of the sensor housing, or a light-transmitting portion is provided on the sensor housing, and the light collection board is arranged inside the sensor housing and corresponds to the light-transmitting portion.

[0026] In some embodiments, the first light emitting diode and the first photosensor are respectively arranged on both sides of the protruding end.

[0027] The simulator for testing the pulse oximeter in the embodiment of the utility model reduces the interference of ambient light by providing an ambient light collection component and a compensation module, thereby improving the accuracy and reliability of the pulse oximeter test. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 The utility model is a schematic diagram of a simulator for testing a pulse oximeter.

[0030] Reference numerals:

[0031] 201. Oximeter processor; 202. Second light-emitting diode; 203. Third photoelectric sensor; 1. Sensor component; 11. PCB board; 12. First photoelectric sensor; 13. First light-emitting diode; 2. Ambient light collection component; 3. Control component. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] The pulse oximeter to be tested by the simulator of the embodiment of the present invention is provided with an opening and closing clamping portion, in which a second light emitting diode 202 and a third photoelectric sensor 203 are arranged opposite to each other.

[0034] like Figure 1 As shown, the simulator for testing the pulse oximeter according to the embodiment of the present invention includes a sensor component 1 , an ambient light collection component 2 and a control component 3 .

[0035] The sensor assembly 1 is adapted to extend into the clamping portion. The sensor assembly 1 includes a first photoelectric sensor 12 and a first light emitting diode 13. The first photoelectric sensor 12 is configured to convert a first optical signal emitted by the second light emitting diode 202 into a first electrical signal. The first light emitting diode 13 is configured to emit a third optical signal to the third photoelectric sensor 203.

[0036] The ambient light collection component 2 includes a second photoelectric sensor, which is used to collect ambient light and convert the ambient light into a second electrical signal;

[0037] The control component 3 includes a receiving module, an input module, a preprocessing module, a compensation module, and an output module;

[0038] The receiving module is configured to receive a first electrical signal and a second electrical signal;

[0039] The input module is configured to send an input signal to the pre-processing module in response to the input parameter;

[0040] The preprocessing module is configured to generate a preprocessed signal based on the first electrical signal and the input signal;

[0041] The compensation module is configured to generate a compensation signal based on the second electrical signal;

[0042] The output module is configured to generate a third electrical signal based on the preprocessing signal and the compensation signal, and the first light emitting diode 13 can convert the third electrical signal into a third optical signal.

[0043] For example, the simulation instrument of the pulse blood oxygen tester in the embodiment of the utility model tests the pulse blood oxygen tester, first inserts the sensor assembly 1 into the clamping part of the pulse blood oxygen tester, and makes the first photoelectric sensor 12 oppositely arranged with the second light emitting diode 202 in the clamping part, and makes the first light emitting diode 13 oppositely arranged with the third photoelectric sensor 203, then utilizes the first photoelectric sensor 12 to receive the first light signal emitted by the second light emitting diode 202, and the first photoelectric sensor 12 converts the received first light signal into a first electric signal and sends to the control assembly 3.

[0044] The second photoelectric sensor in the ambient light collection assembly 2 is used to collect the ambient light of the position where the pulse blood oxygen tester is located, and the second photoelectric sensor converts the collected ambient light signal into a second electric signal and sends to the control assembly 3.

[0045] The receiving module of the control assembly 3 is used to receive the signals transmitted by other devices, such as the first electric signal and the second electric signal.

[0046] The input module includes an input port, and the test personnel can set a preset blood oxygen value on the input module, and then the input module converts the preset blood oxygen value into an input signal and sends to the preprocessing module.

[0047] Then the preprocessing module generates a preprocessed signal based on the first electric signal and the input signal.

[0048] The compensation module generates a compensation signal based on the second electric signal representing the ambient light, for example, the ambient light is divided into multiple intervals according to the light intensity in sequence, then the ambient light signal of each interval corresponds to an electric signal, and the electric signal is named as the compensation signal, multiple intervals correspond to multiple compensation signals one by one, when the second electric signal in different intervals is input, the compensation module first judges which interval the second electric signal is in, and then outputs the corresponding compensation signal. For example, the light intensity interval has 3-10.

[0049] Because the ambient light will interfere with the first electric signal, it will also affect the accuracy of the preprocessed signal generated based on the first electric signal, and further affect the accuracy of the third electric signal.

[0050] The output module generates a third electric signal according to the preprocessed signal and the compensation signal, for example, the output module sums the light intensity represented by the compensation signal and the light intensity represented by the preprocessed signal to generate the third electric signal, at this time, the third electric signal can offset the influence of the ambient light because the compensation signal is added.

[0051] Finally, the control assembly 3 sends the third electric signal to the first light emitting diode 13 to generate a third light signal, and then the third photoelectric sensor 203 receives the third light signal and converts it into a third electric signal and sends to the blood oxygen tester processor 201, and finally displays the measured blood oxygen value on the blood oxygen tester.

[0052] The tester will compare the preset blood oxygen value entered into the input module with the actual blood oxygen value measured on the pulse oximeter. If the difference between the two is within the error range, it indicates that the oximeter is qualified.

[0053] If the difference between the two is outside the error range, the surface oximeter fails.

[0054] In the related art, the simulator does not include the ambient light acquisition component 2 and the compensation module, and directly uses the preprocessed signal as the third electrical signal. At this time, the third electrical signal does not consider the interference factor of the ambient light, resulting in inaccurate test results.

[0055] The simulator for testing the pulse oximeter in the embodiment of the present invention reduces the interference of ambient light by providing the ambient light collection component 2 and the compensation module, thereby improving the accuracy and reliability of the pulse oximeter test.

[0056] It should be noted that the preprocessing module in the control component 3 is consistent with the preprocessing module of the oximeter in the prior art, and is not improved in this application. Therefore, the specific process of the preprocessing module generating the preprocessing signal based on the first electrical signal and the input signal will not be described in detail.

[0057] In some embodiments, a pulse oximeter test simulator includes a sensor housing and a PCB 11. The PCB 11 includes an inner end and an outer end. The inner end is disposed within the sensor housing, while the outer end extends outside the sensor housing. A plurality of first photosensors 12 are spaced apart at the outer end. When the pulse oximeter test simulator is in operation, the outer end can be inserted into a clamping portion of the pulse oximeter.

[0058] In some embodiments, the second photosensor is disposed at the protruding end, and the second photosensor and the first photosensor 12 are located on the same side of the protruding end.

[0059] For example, the second photoelectric sensor is used to collect ambient light and is located on the same side of the extended end as the first photoelectric sensor 12. The second photoelectric sensor is arranged adjacent to the inner end relative to the first photoelectric sensor 12. The second photoelectric sensor is connected to the circuit of the PCB board 11.

[0060] Because pulse oximeters of different brands and models have varying dimensions, the dimensions of the extended end are designed so that a portion of the extended end can extend into the clamping portion, while the remaining portion remains outside. A first photosensor 12 is located in the portion of the extended end that extends into the clamping portion to receive the first light signal emitted by the second light-emitting diode 202 within the clamping portion. A second photosensor is located in the portion of the extended end that remains outside the clamping portion to collect ambient light.

[0061] Therefore, the simulator for testing a pulse oximeter according to the embodiment of the present invention can flexibly adapt to various types of pulse oximeters and has high versatility.

[0062] In some embodiments, the second photosensor is disposed at the inner end, and the second photosensor and the first photosensor 12 are located on the same side of the PCB board 11;

[0063] The sensor housing is provided with a light-shielding portion and a light-transmitting portion, and the light-transmitting portion corresponds to the second photoelectric sensor.

[0064] The simulator's sensor housing is typically constructed of opaque material. When the second photoelectric sensor is located at the inner end, a portion of the sensor housing is constructed of a translucent material to form a light-transmitting portion, allowing ambient light to pass through and be collected by the second photoelectric sensor. This configuration allows the simulator used to test the pulse oximeter to not only collect ambient light but also protect the second photoelectric sensor through the sensor housing.

[0065] In some embodiments, the second photoelectric sensor is disposed in the sensor housing, and the second photoelectric sensor and the first photoelectric sensor 12 are located on the same side of the PCB board 11;

[0066] The sensor housing is provided with a light-shielding portion and a light-transmitting portion, the second photoelectric sensor corresponds to the light-transmitting portion, and the second photoelectric sensor is provided with a transparent bonding portion, which is bonded and connected to the light-transmitting portion.

[0067] In this embodiment, the second photoelectric sensor is provided on the sensor housing and is provided with a transparent adhesive portion, for example, a transparent double-sided adhesive tape, and is adhered to the inner surface of the light-transmitting portion through the adhesive portion.

[0068] In some embodiments, the second photosensor is disposed at the inner end, and the second photosensor and the first photosensor 12 are located on the same side of the PCB board 11;

[0069] The sensor housing is a light-transmitting sensor housing.

[0070] In some embodiments, a bonding portion is provided on one side of the second photoelectric sensor, and the second photoelectric sensor is connected to the outer surface or the protruding end of the sensor housing through the bonding portion.

[0071] For example, the second photoelectric sensor is directly bonded to the outer surface of the sensor housing, or bonded to the outer surface of the protruding end.

[0072] In some embodiments, the control assembly 3 includes a control housing, a light-transmitting plate is provided on the control housing, and the second photoelectric sensor is provided in the control housing and is bonded to the light-transmitting plate via a transparent adhesive sheet;

[0073] Or the ambient light collection component 2 comprises a light collection plate, the second photoelectric sensor is arranged on the light collection plate, and the light collection plate is arranged outside the control shell or is arranged inside the control shell and opposite the light transmission plate.

[0074] For example, the control component 3 comprises a control shell, the controller is arranged inside the control shell, and the second photoelectric sensor is arranged inside the control shell and adhered to the light transmission part through a transparent adhesive sheet.

[0075] Or, the ambient light collection component 2 is made into a light collection plate, the light collection plate is arranged outside the control shell or is arranged inside the control shell and at the position of the light transmission plate, so that the second photoelectric sensor collects light transmitted through the light transmission plate.

[0076] In some embodiments, the ambient light collection component 2 comprises a light collection plate, the second photoelectric sensor is arranged on the light collection plate, and the light collection plate is arranged outside the sensor shell or the light transmission part is arranged on the sensor shell, and the light collection plate is arranged inside the sensor shell and corresponds to the light transmission part.

[0077] The light collection plate is arranged outside the sensor shell, for example, the light collection plate is adhered to the outer surface of the sensor shell, or the light collection plate is arranged inside the sensor shell, for example, the light collection plate is arranged at the position of the light transmission part inside the sensor shell, so that the second photoelectric sensor collects light transmitted through the light transmission part.

[0078] In other embodiments, the ambient light collection component 2 is not connected to the control shell and the sensor shell, for example, the ambient light collection component 2 is made into a light collection plate, and in use, the light collection plate is placed near the sensor component 1 and kept electrically connected with the control component 3.

[0079] In some embodiments, the first light emitting diode 13 and the first photoelectric sensor 12 are arranged on both sides of the protruding end respectively. Thus, the first photoelectric sensor 12 receives the signal of the second light emitting diode 202, and the third photoelectric sensor 203 receives the signal of the first light emitting diode 13.

[0080] In some embodiments, the first light emitting diode 13 is provided in plurality, at least one first light emitting diode 13 emits red light, and at least one first light emitting diode 13 emits infrared light. Thus, the simulation instrument for testing the pulse oximeter can more accurately simulate the light absorption in human blood, thereby providing a more realistic test environment.

[0081] In some embodiments, the second photoelectric sensor is a silicon photocell.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A simulator for testing a pulse oximeter, characterized in that: The pulse oximeter is provided with an opening and closing clamping portion, wherein a second light emitting diode and a third photoelectric sensor are arranged opposite to each other, including: a sensor assembly adapted to extend into the clamping portion, the sensor assembly comprising a first photoelectric sensor and a first light-emitting diode, the first photoelectric sensor being configured to convert a first optical signal emitted by the second light-emitting diode into a first electrical signal, the first light-emitting diode being configured to emit a third optical signal to the third photoelectric sensor; An ambient light collection component, the ambient light collection component comprising a second photoelectric sensor, the second photoelectric sensor being used to collect ambient light and convert the ambient light into a second electrical signal; A control component, comprising a receiving module, an input module, a preprocessing module, a compensation module, and an output module; The receiving module is configured to receive the first electrical signal and the second electrical signal; The input module is configured to send an input signal to the pre-processing module in response to an input parameter; The preprocessing module is configured to generate a preprocessing signal based on the first electrical signal and the input signal; The compensation module is configured to generate a compensation signal based on the second electrical signal; The output module is configured to generate a third electrical signal based on the pre-processed signal and the compensation signal, and the first light emitting diode is capable of converting the third electrical signal into the third optical signal.

2. The simulator for testing a pulse oximeter according to claim 1, characterized in that: The sensor assembly includes a sensor housing and a PCB board, the PCB board includes an inner end and a protruding end, the inner end is arranged in the sensor housing, the protruding end protrudes outside the sensor housing, and a plurality of the first photoelectric sensors are arranged at intervals at the protruding end.

3. The simulator for testing a pulse oximeter according to claim 2, characterized in that: The second photoelectric sensor is provided at the protruding end, and the second photoelectric sensor and the first photoelectric sensor are located on the same side of the protruding end.

4. The simulator for testing a pulse oximeter according to claim 2, characterized in that: The second photoelectric sensor is provided at the inner end, and the second photoelectric sensor and the first photoelectric sensor are located on the same side of the PCB board; The sensor housing is provided with a light-shielding portion and a light-transmitting portion, and the light-transmitting portion corresponds to the second photoelectric sensor.

5. The simulator for testing a pulse oximeter according to claim 2, characterized in that: The second photoelectric sensor is disposed in the sensor housing, and the second photoelectric sensor and the first photoelectric sensor are located on the same side of the PCB board; The sensor housing is provided with a light shielding portion and a light transmitting portion, the second photoelectric sensor corresponds to the light transmitting portion, and the second photoelectric sensor is provided with a transparent adhesive portion, the adhesive portion is adhesively connected to the light transmitting portion.

6. The simulator for testing a pulse oximeter according to claim 2, characterized in that: The second photoelectric sensor is provided at the inner end, and the second photoelectric sensor and the first photoelectric sensor are located on the same side of the PCB board; The sensor housing is a light-transmitting sensor housing.

7. The simulator for testing a pulse oximeter according to claim 2, characterized in that: A bonding portion is provided on one side of the second photoelectric sensor, and the second photoelectric sensor is connected to the outer surface of the sensor housing or the protruding end via the bonding portion.

8. The simulator for testing a pulse oximeter according to claim 1, characterized in that: The control assembly includes a control housing, a light-transmitting plate is provided on the control housing, and the second photoelectric sensor is provided in the control housing and is bonded to the light-transmitting plate via a transparent adhesive sheet; Or the ambient light collection component includes a light collection board, on which a second photoelectric sensor is provided, and the light collection board is arranged outside the control housing, or the light collection board is arranged inside the control housing and opposite to the light-transmitting board.

9. The simulator for testing a pulse oximeter according to claim 2, characterized in that: The ambient light collection component includes a light collection board, on which a second photoelectric sensor is provided. The light collection board is arranged on the outside of the sensor housing, or the sensor housing is provided with a light-transmitting portion, and the light collection board is arranged in the sensor housing and corresponds to the light-transmitting portion.

10. The simulator for testing a pulse oximeter according to claim 2, characterized in that: The first light emitting diode and the first photosensor are respectively arranged on both sides of the protruding end.

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