CN219715182U - Counting device and cell analyzer - Google Patents
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Abstract
The utility model belongs to the field of wired signal filtering, and particularly relates to a counting device and a cell analyzer. The counting device comprises a filtering module and a counting module; the filtering module is connected with the counting module and comprises a conduction signal analysis unit and a filtering unit; the conduction signal analysis unit is connected with the filtering unit; the conduction signal analysis unit is used for receiving electromagnetic interference signals generated by the wired electric signals and outputting digital signals to the filtering unit; the digital signal is used for adjusting the filtering parameters of the filtering unit; the filtering module is used for receiving an original input signal, filtering the original input signal based on the filtering parameters, outputting a target signal to the counting module, and the counting module is used for counting the target signal. The utility model removes electromagnetic interference signals in the original input signals by utilizing the conduction signal analysis unit and the filtering unit in the filtering module, so that the original input signals are not changed. And errors caused by electromagnetic interference signals generated by the wired electric signals of the counting device are avoided.
Description
Technical Field
The utility model belongs to the field of wired signal filtering, and particularly relates to a counting device and a cell analyzer.
Background
At present, the cell analyzer and other diagnostic equipment count the number of cells through pulse signals, and the processor counts the number of various cells through metering the number of pulses.
When the cell analyzer and other similar diagnosis equipment are used, the equipment power supply is poor in interference filtering on the commercial power, the circuit board is externally connected with various high-power peripheral work to form interference on the circuit board, and the switching power supply output voltage ripple and other wired electromagnetic interference signals can generate specific frequency interference on counting, so that the original signals are changed, and the counting result is more or less.
Disclosure of Invention
In view of the above, it is necessary to provide a counting device and a cell analyzer capable of filtering the interference caused by the limited electromagnetic signal during the counting process. The accuracy of the counting result of the counting device and the cell analyzer can be improved.
The utility model adopts the technical scheme that: a counting device comprises a filtering module and a counting module;
the filtering module is connected with the counting module and comprises a conduction signal analysis unit and a filtering unit;
the conduction signal analysis unit is connected with the filtering unit;
the conduction signal analysis unit is used for receiving electromagnetic interference signals generated by the wired electric signals and outputting digital signals to the filtering unit; the digital signal is used for adjusting the filtering parameters of the filtering unit;
the filtering module is used for receiving an original input signal, filtering the original input signal based on a filtering parameter, and outputting a target signal to the counting module, wherein the counting module is used for counting the target signal.
Further, the conduction signal analysis unit comprises a commercial electric signal analyzer; the digital signal comprises a first digital signal;
the commercial power signal analyzer is connected with the filtering unit;
the commercial power signal analyzer comprises a first sensor and a first analog-to-digital converter;
the first sensor is connected with the first analog-to-digital converter; the first analog-to-digital converter is connected with the filtering unit;
the first sensor is used for receiving a first electromagnetic interference signal and outputting a first electric signal to the first analog-to-digital converter;
the first analog-to-digital converter is used for receiving the first electric signal and outputting the first digital signal to the filtering unit.
Further, the conduction signal analysis unit further comprises a circuit board signal analyzer; the digital signal further comprises a second digital signal;
the circuit board signal analyzer is connected with the filtering unit;
the circuit board signal analyzer comprises a second sensor and a second analog-to-digital converter;
the second sensor is connected with the second analog-to-digital converter; the second analog-to-digital converter is connected with the filtering unit;
the second sensor is used for receiving a second electromagnetic interference signal and outputting a second electric signal to the first analog-to-digital converter;
the second analog-to-digital converter is used for receiving the second electric signal and outputting the second digital signal to the filtering unit.
Further, the conduction signal analysis unit further comprises a power supply signal analyzer; the digital signal further comprises a third digital signal;
the power supply signal analyzer is connected with the filtering unit;
the power signal analyzer comprises a third sensor and a third analog-to-digital converter;
the third sensor is connected with the third analog-to-digital converter; the third analog-to-digital converter is connected with the filtering unit;
the third sensor is configured to receive a third electromagnetic interference signal and output a third electrical signal to the third analog-to-digital converter;
the third analog-to-digital converter is configured to receive the third electrical signal and output the third digital signal to the filtering unit.
Further, the commercial power signal analyzer is positioned in a preset area near the connection position of the counting device and the commercial power; the circuit board signal analyzer is positioned in a preset area near a circuit board ground signal of the counting device; the power signal analyzer is located in a preset area near a power module of the counting device.
Further, the conduction signal analysis unit further comprises a frequency conversion circuit;
the frequency conversion circuit comprises a first frequency conversion circuit, a second frequency conversion circuit and a third frequency conversion circuit;
the input end of the first frequency conversion circuit is connected with the first sensor, and the output end of the first frequency conversion circuit is connected with the first analog-to-digital converter;
the input end of the second frequency conversion circuit is connected with the second sensor, and the output end of the second frequency conversion circuit is connected with the second analog-to-digital converter;
the input end of the third frequency conversion circuit is connected with the third sensor, and the output end of the third frequency conversion circuit is connected with a third analog-to-digital converter;
the frequency conversion circuit is used for changing carrier frequencies of the first electric signal, the second electric signal and the third electric signal.
Further, the filtering unit comprises a signal analysis processor;
the signal analysis processor is connected with the conduction signal analysis unit;
the signal analysis processor is used for receiving and analyzing the characteristic interference signals in the digital signals and outputting filtering parameters.
Further, the filtering unit further comprises a filter;
the filter is connected with the signal analysis processor; the filter is used for receiving the filtering parameters and the original input signals and outputting the target signals; the filter is used for filtering the characteristic interference signals in the original input signals according to the filtering parameters.
Further, the characteristic interference signal is the electromagnetic interference signal with the preset frequency reaching a threshold value.
A cell analyser comprising a counting device as hereinbefore described.
The embodiment of the utility model has the following beneficial effects:
the utility model uses the conduction signal analysis unit in the filtering module to specially take charge of receiving electromagnetic interference signals of electromagnetic radiation, and the electromagnetic interference signals in the original input signals are removed by matching with the filtering unit, so that the original input signals of the counting device are not changed by the electromagnetic interference signals generated by the wired electric signals. And errors caused by electromagnetic interference signals generated by the wired electric signals of the counting result of the counting device are avoided.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Wherein:
FIG. 1 is a schematic diagram of a counting device in one embodiment;
FIG. 2 is a schematic diagram of a conductive signal analysis unit;
FIG. 3 is a schematic diagram of the connection of a conductive signal analysis unit in one embodiment;
fig. 4 is a schematic diagram of a structure of a filtering unit in an embodiment.
The utility model is further explained below with reference to the drawings and examples.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides a counting device. In some embodiments, the counting device includes a filtering module and a counting module. Fig. 1 is a schematic diagram of a counting device in one embodiment.
Referring to fig. 1, a filtering module is connected to the counting module, and the filtering module includes a conducted signal analysis unit and a filtering unit.
The conduction signal analysis unit is connected with the filtering unit.
The conduction signal analysis unit is used for receiving electromagnetic interference signals generated by the cable electric signals and outputting digital signals to the filtering unit. The digital signal is used for adjusting the filtering parameters of the filtering unit.
The filtering module is used for receiving an original input signal, filtering the original input signal based on the filtering parameters, outputting a target signal to the counting module, and the counting module is used for counting the target signal.
Specifically, the counting module can count by pulse signals, and the counting processor counts the number by counting the number of pulses. After the electromagnetic interference signal generated by the limited conducted electrical signal is received by the conducted signal analysis unit, the conducted signal analysis unit may convert the received electromagnetic radiation into a digital signal for use by the filtering unit. The filtering unit receives the digital signal and may generate filtering parameters for filtering the original input signal. The filtering unit filters electromagnetic interference signals in the original input signals according to the filtering parameters, generates target signals and transmits the target signals to the counting module for statistics. Therefore, the counting device provided by the utility model can have the function of filtering electromagnetic interference signals generated by limited conductive electric signals in the space. In practical application, the interference of electromagnetic radiation equipment such as a communication base station and the like, which is suffered by a cell analyzer when counting the number of cells, can be reduced, and the accuracy of data statistics is improved.
In some embodiments, the conducted signal analysis unit comprises a mains signal analyzer. The digital signal includes a first digital signal.
The commercial power signal analyzer is connected with the filtering unit.
The mains signal analyzer comprises a first sensor and a first analog-to-digital converter.
The first sensor is connected with the first analog-to-digital converter. The first analog-to-digital converter is connected with the filtering unit.
The first sensor is used for receiving the first electromagnetic interference signal and outputting a first electric signal to the first analog-to-digital converter.
The first analog-to-digital converter is used for receiving the first electric signal and outputting a first digital signal to the filtering unit.
Specifically, the commercial power analyzer is mainly used for converting a first electromagnetic interference signal in the power frequency alternating current into a first digital signal. The first sensor is capable of receiving a power line carrier signal in the commercial electric signal as a first electromagnetic interference signal and converting the first electromagnetic interference signal into a first electric signal. And then the first electric signal is converted into a first digital signal through a first analog-to-digital converter.
In some embodiments, the conducted signal analysis unit further comprises a circuit board signal analyzer. The digital signal also includes a second digital signal.
The circuit board signal analyzer is connected with the filtering unit.
The circuit board signal analyzer includes a second sensor and a second analog-to-digital converter.
The second sensor is connected with the second analog-to-digital converter. The second analog-to-digital converter is connected with the filtering unit.
The second sensor is used for receiving a second electromagnetic interference signal and outputting a second electric signal to the first analog-to-digital converter.
The second analog-to-digital converter is used for receiving the second electric signal and outputting a second digital signal to the filtering unit.
Specifically, the circuit board signal analyzer is mainly used for converting a second electromagnetic interference signal in a signal between the circuit board analog ground and the power digital ground into a second digital signal. The second sensor is capable of receiving a signal between the circuit board analog ground and the power digital ground as a second electromagnetic interference signal and converting the second electromagnetic interference signal into a second electrical signal. And converting the second electric signal into a second digital signal through a second analog-to-digital converter.
Further, the signal between the circuit board analog ground and the power digital ground generates a voltage difference with a specific frequency due to the operation of external high-power equipment (such as a motor, a fan and the like) so as to form an electromagnetic interference signal with the specific frequency. In order to better receive the electromagnetic interference signal with the specific frequency, a signal amplifying circuit can be added in front of the second sensor, and the signal amplifying circuit is used for amplifying the electromagnetic interference signal so that the second sensor can better receive the electromagnetic interference signal.
In some embodiments, the conducted signal analysis unit further comprises a power supply signal analyzer. The digital signal further includes a third digital signal.
The power signal analyzer is connected with the filtering unit.
The power signal analyzer includes a third sensor and a third analog-to-digital converter.
The third sensor is connected with a third analog-to-digital converter. The third analog-to-digital converter is connected with the filtering unit.
The third sensor is used for receiving a third electromagnetic interference signal and outputting a third electric signal to the third analog-to-digital converter.
The third analog-to-digital converter is used for receiving a third electric signal and outputting a third digital signal to the filtering unit.
Specifically, the power signal analyzer is mainly used for converting a third electromagnetic interference signal in the output signal of the switching power supply into a third digital signal. The third sensor is capable of receiving a signal between the circuit board analog ground and the power digital ground as a third electromagnetic interference signal and converting the signal into a third electrical signal. And then the third electric signal is converted into a third digital signal through a third analog-to-digital converter.
In some embodiments, the mains signal analyzer is located in a preset area near the connection of the counting device to the mains. The circuit board signal analyzer is located in a predetermined area near the circuit board ground signal of the counting device. The power signal analyzer is located in a preset area near the power module of the counting device.
Specifically, the commercial power connection part is usually a component such as a plug which is directly connected with the power frequency alternating current. The circuit board ground signals include signals between analog ground, power ground, and digital ground of the circuit board. The power supply module comprises a complete machine power supply and a low-power switch power supply module used for converting voltage on a circuit board, the working frequencies of different modules are different, and the characteristic frequency may change under different loads.
Further, the circuit board signal analyzer can also receive electromagnetic interference signals generated by characteristic frequencies generated by part of the communication bus, such as clocks of analog-to-digital converters, clocks of serial peripheral interfaces and the like.
In some embodiments, the conducted signal analysis unit further comprises a frequency conversion circuit. Fig. 2 is a schematic diagram of a structure of a signal analysis unit. As shown in fig. 2, the conducted signal analysis unit includes a commercial signal analyzer, a circuit board signal analyzer, a power signal analyzer, a first analog-to-digital converter, a second analog-to-digital converter, a third analog-to-digital converter, and a frequency conversion circuit.
The frequency conversion circuit comprises a first frequency conversion circuit, a second frequency conversion circuit and a third frequency conversion circuit.
The input end of the first frequency conversion circuit is connected with a first sensor (not shown in the figure) in the commercial electric signal analyzer, and the output end of the first frequency conversion circuit is connected with the first analog-to-digital converter.
The input end of the second frequency conversion circuit is connected with a second sensor (not shown in the figure) in the circuit board signal analyzer, and the output end of the second frequency conversion circuit is connected with a second analog-to-digital converter.
The input end of the third frequency conversion circuit is connected with a third sensor (not shown in the figure) in the power signal analyzer, and the output end of the third frequency conversion circuit is connected with a third analog-to-digital converter.
The frequency conversion circuit is used for changing carrier frequencies of the first electric signal, the second electric signal and the third electric signal.
Further, the first frequency conversion circuit is configured to change a carrier frequency of the electric signal transmitted by the first sensor, for example, a frequency of a power line carrier. The second frequency conversion circuit is used for changing the carrier frequency of the electric signal transmitted by the second sensor, for example, the frequency of a specific frequency interference signal generated by the operation of a motor, a fan and other equipment on a circuit board ground signal. The third frequency conversion circuit is used for changing the carrier frequency of the electric signal transmitted by the third sensor, such as the frequency of a specific frequency interference signal caused when the low-power switching power supply module used for converting the voltage on the circuit board switches the state.
Specifically, the first sensor, the second sensor, and the third sensor are collectively referred to as a sensor. The first analog-to-digital converter, the second analog-to-digital converter, and the third analog-to-digital converter are collectively referred to as analog-to-digital converters.
FIG. 3 is a schematic diagram of the connection of a conductive signal analysis unit in one embodiment. Wherein 101 is a sensor and 102 is an analog-to-digital converter.
As shown in fig. 3, an input end of the frequency conversion circuit is connected to the sensor 101, and an output end of the frequency conversion circuit is connected to the analog-to-digital converter 102. The frequency conversion circuit comprises a down-conversion circuit and an up-conversion circuit. The first frequency conversion circuit, the second frequency conversion circuit and the third frequency conversion circuit can use a down-conversion circuit or an up-conversion circuit or multiple frequency conversion circuits simultaneously according to different environments of the counting device.
The down-conversion circuit may reduce the signal frequency. When the frequency of the electric signals received by the first sensor, the second sensor and the third sensor is higher than the receiving frequency of the first analog-to-digital converter, the second analog-to-digital converter and the third analog-to-digital converter, the down-conversion circuit can improve the conversion precision of the first analog-to-digital converter to the first electric signals, the second analog-to-digital converter to the second electric signals and the third analog-to-digital converter to the three electric signals.
The up-conversion circuit may increase the signal frequency. When the frequency of the electric signals received by the first sensor, the second sensor and the third sensor is lower than the receiving frequency of the first analog-to-digital converter, the second analog-to-digital converter and the third analog-to-digital converter, the up-conversion circuit can improve the sensitivity of the first analog-to-digital converter to the first electric signals, the second analog-to-digital converter to the second electric signals and the third analog-to-digital converter to the three electric signals.
In some embodiments, the filtering unit comprises a signal analysis processor.
The signal analysis processor is connected with the conduction signal analysis unit.
The signal analysis processor is used for receiving and analyzing the characteristic interference signals in the digital signals and outputting filtering parameters.
Further, the signal processing analyzer is connected to an analog-to-digital converter 102 in the conducted signal analyzing unit. Analog-to-digital converter 102 passes the digital signal to a signal processing analyzer. The signal processing analyzer analyzes the received digital signals and judges whether the characteristic interference signals with the power spectrum amplitude exceeding the threshold value exist in each frequency band. And if so, changing the filtering parameters to filter out the characteristic interference signals with the power spectrum amplitude exceeding the threshold value. If not, the filter parameters are altered to identify that the original input signal does not need to be processed. When the frequency of the characteristic interference signal represented by the digital signal received by the signal processing analyzer changes, the signal processing analyzer changes the filtering parameters in real time along with the change of the frequency of the characteristic interference signal.
In some embodiments, the filtering unit further comprises a filter. Fig. 4 is a schematic diagram of a structure of a filtering unit in an embodiment. Wherein 201 is a signal analysis processor and 202 is a filter.
The filter 202 is connected to the signal analysis processor 201. The filter 202 is used to receive the filtering parameters and the original input signal and output a target signal. The filter 202 is used for filtering out the characteristic interference signal in the original input signal according to the filtering parameters.
In some embodiments, the signal analysis processor 201 includes a processing chip and peripheral circuitry. The processing chip may be any chip with signal analysis and processing capabilities, and the specific model of the processing chip is not particularly limited.
Further, after the filter 202 receives the filtering parameters, the current original input signal is processed according to the filtering parameters. And if the filtering parameter indicates that the characteristic interference signal to be filtered exists, filtering the signal with the specific interference frequency from the original input signal to obtain the target signal. And if the filtering parameter indicates that the characteristic interference signal to be filtered does not exist, outputting the original input signal as a target signal.
In some embodiments, the characteristic interference signal is an electromagnetic interference signal whose preset frequency reaches a threshold.
Specifically, the sensor 101 may receive various electromagnetic interference signals, where different electromagnetic interference signals have different frequency band power spectrums. Electromagnetic interference signals with frequency band power spectrum within a certain range can affect the original input signals. Thus, when the original input signal is processed, only the digital signal with the frequency band power spectrum amplitude exceeding the threshold value needs to be filtered.
The present embodiment also provides a cell analyzer including the counting device as described above.
In some embodiments, the counting device is located in a detection counting system of a cell analyzer, and by filtering electromagnetic interference signals of a wired electric signal of the cell analyzer, the cell counting process is not affected by the interference signals, errors of cell counting results caused by the electromagnetic interference signals in a space are avoided, and accuracy of cell counting is improved.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. The counting device is characterized by comprising a filtering module and a counting module;
the filtering module is connected with the counting module and comprises a conduction signal analysis unit and a filtering unit;
the conduction signal analysis unit is connected with the filtering unit;
the conduction signal analysis unit is used for receiving electromagnetic interference signals generated by the wired electric signals and outputting digital signals to the filtering unit; the digital signal is used for adjusting the filtering parameters of the filtering unit;
the filtering module is used for receiving an original input signal, filtering the original input signal based on a filtering parameter, and outputting a target signal to the counting module, wherein the counting module is used for counting the target signal.
2. The counting device according to claim 1, wherein the conducted signal analyzing unit comprises a mains signal analyzer; the digital signal comprises a first digital signal;
the commercial power signal analyzer is connected with the filtering unit;
the commercial power signal analyzer comprises a first sensor and a first analog-to-digital converter;
the first sensor is connected with the first analog-to-digital converter; the first analog-to-digital converter is connected with the filtering unit;
the first sensor is used for receiving a first electromagnetic interference signal and outputting a first electric signal to the first analog-to-digital converter;
the first analog-to-digital converter is used for receiving the first electric signal and outputting the first digital signal to the filtering unit.
3. The counting device of claim 2, wherein the conducted signal analysis unit further comprises a circuit board signal analyzer; the digital signal further comprises a second digital signal;
the circuit board signal analyzer is connected with the filtering unit;
the circuit board signal analyzer comprises a second sensor and a second analog-to-digital converter;
the second sensor is connected with the second analog-to-digital converter; the second analog-to-digital converter is connected with the filtering unit;
the second sensor is used for receiving a second electromagnetic interference signal and outputting a second electric signal to the first analog-to-digital converter;
the second analog-to-digital converter is used for receiving the second electric signal and outputting the second digital signal to the filtering unit.
4. A counting device according to claim 3, wherein the conduction signal analysis unit further comprises a power supply signal analyzer; the digital signal further comprises a third digital signal;
the power supply signal analyzer is connected with the filtering unit;
the power signal analyzer comprises a third sensor and a third analog-to-digital converter;
the third sensor is connected with the third analog-to-digital converter; the third analog-to-digital converter is connected with the filtering unit;
the third sensor is configured to receive a third electromagnetic interference signal and output a third electrical signal to the third analog-to-digital converter;
the third analog-to-digital converter is configured to receive the third electrical signal and output the third digital signal to the filtering unit.
5. The counting device of claim 4, wherein the mains signal analyzer is located in a predetermined area near a junction of the counting device and mains; the circuit board signal analyzer is positioned in a preset area near a circuit board ground signal of the counting device; the power signal analyzer is located in a preset area near a power module of the counting device.
6. The counting device of claim 5, wherein the conducted signal analysis unit further comprises a frequency conversion circuit;
the frequency conversion circuit comprises a first frequency conversion circuit, a second frequency conversion circuit and a third frequency conversion circuit;
the input end of the first frequency conversion circuit is connected with the first sensor, and the output end of the first frequency conversion circuit is connected with the first analog-to-digital converter;
the input end of the second frequency conversion circuit is connected with the second sensor, and the output end of the second frequency conversion circuit is connected with the second analog-to-digital converter;
the input end of the third frequency conversion circuit is connected with the third sensor, and the output end of the third frequency conversion circuit is connected with a third analog-to-digital converter;
the frequency conversion circuit is used for changing carrier frequencies of the first electric signal, the second electric signal and the third electric signal.
7. A counting device according to any one of claims 1 to 6, wherein the filtering unit comprises a signal analysis processor;
the signal analysis processor is connected with the conduction signal analysis unit;
the signal analysis processor is used for receiving and analyzing the characteristic interference signals in the digital signals and outputting filtering parameters.
8. The counting device of claim 7, wherein the filtering unit further comprises a filter;
the filter is connected with the signal analysis processor; the filter is used for receiving the filtering parameters and the original input signals and outputting the target signals; the filter is used for filtering the characteristic interference signals in the original input signals according to the filtering parameters.
9. The counting device of claim 7, wherein the characteristic interference signal is the electromagnetic interference signal with a preset frequency reaching a threshold.
10. A cell analyser comprising a counting device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320595510.2U CN219715182U (en) | 2023-03-22 | 2023-03-22 | Counting device and cell analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320595510.2U CN219715182U (en) | 2023-03-22 | 2023-03-22 | Counting device and cell analyzer |
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| Publication Number | Publication Date |
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| CN219715182U true CN219715182U (en) | 2023-09-19 |
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| CN202320595510.2U Active CN219715182U (en) | 2023-03-22 | 2023-03-22 | Counting device and cell analyzer |
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| CN (1) | CN219715182U (en) |
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