Multi-path output adjusting and displaying device of therapeutic apparatus

Abstract

The utility model provides a therapeutic instrument multiplexed output regulation display device, including: a multiplexed output regulation circuit, a multiplexed signal acquisition circuit and an adaptive module, the multiplexed output regulation circuit includes a single-chip microcomputer, a power amplifier unit, a multiplexed output regulation potentiometer and a display screen, the single-chip microcomputer is connected with the power amplifier unit, the power amplifier unit is connected with the multiplexed output regulation potentiometer, and the display screen is connected with the multiplexed output regulation potentiometer. And the output end of the power amplifier unit is respectively connected with each potentiometer for multi-path output regulation. The multipath signal acquisition circuit comprises sampling units, the input end of each sampling unit is connected with each path of output adjusting potentiometer, the output end of each sampling unit is connected with each ADC port of the single-chip microcomputer, and the display screen is connected with the single-chip microcomputer. Compared with a multi-path output adjusting circuit, the output state of each path can be visually displayed on the display screen, and the problem that the output intensity of each path cannot be displayed or the display is not clear due to the fact that a knob scale is adjusted by an output adjusting potentiometer is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of output display, in particular to a multi-channel output regulating and display device of a therapeutic instrument. Background Art

[0002] In the medical field, multi-channel output therapeutic instruments are widely used. Among them, the method of using a power amplifier for multiple outputs and connecting potentiometers in series in each output line to adjust the output strength of each channel is widely used because of its simple circuit, mature technology and convenient adjustment. We call this circuit a multi-channel output adjustment circuit.

[0003] In the prior art, the multi-channel output adjustment circuit has the following problems: the potentiometer is connected in series in the output circuit to adjust the output intensity, which is an open-loop control method. The adjustment degree and actual output intensity cannot be fed back to the single-chip microcomputer, nor can they be displayed on the display screen. It is difficult to accurately know the adjustment degree and output intensity by manually rotating the potentiometer. For example, if the method of printing the scale next to the knob is adopted, the font is too small due to the limitation of the panel area and is often difficult to recognize. At the same time, the matching error between the mechanical knob and the potentiometer will cause indication deviation. Therefore, such equipment is often operated based on experience in actual applications. A little carelessness may cause excessive output, which brings certain risks to clinical treatment. Summary of the invention

[0004] The purpose of the utility model is to solve the above technical defects.

[0005] Therefore, the purpose of the utility model is to provide a multi-channel output adjustment and display device for a therapeutic apparatus.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a therapeutic instrument multi-channel output adjustment display device, including: a multi-channel output adjustment circuit, a multi-channel signal acquisition circuit and an adaptive module. The multi-channel output adjustment circuit includes a single-chip microcomputer, a power amplifier unit, a multi-channel output adjustment potentiometer and a display screen, the single-chip microcomputer is connected to the power amplifier unit, and the output end of the power amplifier unit is respectively connected to each multi-channel output adjustment potentiometer. The multi-channel signal acquisition circuit includes each sampling unit, the input end of each sampling unit is respectively connected to each output adjustment potentiometer, the output end of each sampling unit is respectively connected to each ADC port of the single-chip microcomputer, and the display screen is connected to the single-chip microcomputer. Compared with the multi-channel output adjustment circuit, it can intuitively display the status of each output on the display screen, overcoming the problem that the intensity of each output cannot be displayed, or the scale of the output adjustment potentiometer cannot be clearly displayed.

[0007] The multi-channel output adjustment circuit, after the output of the power amplifier unit is connected to the multi-channel output adjustment potentiometer, directly outputs the therapeutic current from each channel, and the display screen of the device cannot display the intensity of each output signal. After adopting this technology, each sampling unit in the multi-channel signal acquisition circuit samples each output signal. The sampling unit is connected in parallel with the output line to collect the output voltage signal, and the sampling unit is connected in series with the output line to collect the output current signal. The sampling unit and the output line are both connected in parallel and in series to collect voltage and current signals at the same time. The sampling signal is transmitted to each ADC (analog-to-digital conversion signal port) port of the single-chip microcomputer, and the analog-to-digital conversion is completed by the software program to become a numerical signal, and then converted into an image signal by the software program and sent to the display screen. The output intensity of each channel is displayed on the display screen in the form of a numerical value plus a bar graph.

[0008] The multi-channel output adjustment and display device of the therapeutic apparatus of the utility model solves the problem that the multi-channel output adjustment circuit in the prior art cannot display the output intensity of each channel, and has the following advantages:

[0009] 1. Intuitively display the output strength of each channel for easy reading.

[0010] 2. The output intensity display of each channel is completely independent and does not affect each other.

[0011] 3. It can dynamically display the actual output strength of each channel in real time without delay.

[0012] 4. The output display accuracy is determined by the ADC function of the microcontroller and can reach an accuracy of one thousandth.

[0013] 5. No additional operations are required during use and no training is required, making it easy to use.

[0014] 6. The added multi-channel signal acquisition circuit, each sampling unit is composed of only precision resistors or precision resistors plus operational amplifiers, the circuit is simple and low cost.

[0015] 7. The sampling unit can collect output voltage signals by connecting it in parallel with the output circuit, can collect output current signals by connecting it in series with the output circuit, or can collect voltage and current signals simultaneously by connecting it in parallel with the output circuit.

[0016] 8. Rationally utilize the multi-channel ADC port resources and display screen resources of the microcontroller in traditional equipment to achieve multi-channel output display function without adding more hardware. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is a structural diagram of a conventional multi-channel output adjustment display device;

[0019] Figure 2 It is a structural diagram of a display device for adjusting and collecting voltage signals according to the multi-channel output of the therapeutic apparatus of the utility model;

[0020] Figure 3 It is a structural diagram of a display device for adjusting and collecting current signals according to the multi-channel output of the therapeutic apparatus of the utility model;

[0021] Figure 4 The present invention is a flowchart of a multi-channel output adjustment and display device for a therapeutic apparatus according to the present invention. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0023] The utility model provides a therapeutic instrument multi-channel output adjustment display device and a method thereof, which is applicable to the electronic technical fields such as active medical equipment and equipment with multi-channel outputs, and can display the output status of each channel in real time.

[0024] Figure 1 This is the output adjustment circuit of a traditional multi-channel output therapeutic instrument. It can be seen in the figure that after the single-chip microcomputer controls the power amplifier unit to generate a power signal, it is divided into multiple channels and directly output after being adjusted by their respective potentiometers. This is an open-loop control method. The adjustment degree and actual output intensity cannot be fed back to the single-chip microcomputer, nor can it be displayed on the display screen. The display screen does not display the intensity of each output signal. The output intensity of each channel is mainly determined by the rotation angle of the panel adjustment knob and the operator's experience. Due to the limitation of the panel area, the rotation scale and font are too small and often difficult to recognize. At the same time, the error between the mechanical knob and the potentiometer will cause indication deviation. Therefore, such equipment is often operated based on experience in actual applications. A little carelessness may cause excessive output, which brings certain risks to clinical treatment.

[0025] Figure 2 As shown, the display device for collecting voltage signals by adjusting the multi-channel output of the therapeutic device of the embodiment of the utility model comprises: a traditional multi-channel output adjustment device and a multi-channel output signal acquisition circuit, wherein the multi-channel output adjustment circuit comprises a single-chip microcomputer, a power amplifier unit, a multi-channel output adjustment potentiometer and a display screen, wherein the single-chip microcomputer is connected to the power amplifier unit, and the output end of the power amplifier unit is respectively connected to each potentiometer of the multi-channel output adjustment. The multi-channel signal acquisition circuit comprises each sampling unit, wherein the input end of each sampling unit is respectively connected to each output adjustment potentiometer, and the output end of each sampling unit is respectively connected to each ADC port of the single-chip microcomputer, and the display screen is connected to the single-chip microcomputer.

[0026] In this embodiment, the sampling unit is connected in parallel with the output circuit, and the output voltage signal can be collected and fed back to the single-chip microcomputer to form a closed-loop circuit. Its working process: the single-chip microcomputer controls the power amplifier unit to generate a power signal, and the power signal is divided into multiple paths and output after adjustment by the potentiometers A1-AN and B1-BN. Each sampling unit CA1-CAN and CB1-CBN is connected to an output circuit respectively. For devices with a sufficiently large output voltage, the sampling unit is composed of precision resistors, and the sampling signal is directly sent to the ADC port of the single-chip microcomputer after the resistor voltage is divided; for devices with an output voltage of mV level, the sampling unit is composed of an operational amplifier, and the operational amplifier in the sampling unit amplifies the sampling signal and sends it to each ADC port of the single-chip microcomputer. After the single-chip microcomputer receives the sampled analog signal, it completes the digital-to-analog conversion through internal program calculation, converts the analog signal into a digital signal, and then converts the signal into an image signal, and sends the image signal to the display screen, which displays the output voltage intensity of each path in digital or bar graph form.

[0027] Figure 3 As shown, the display device for collecting current signals by adjusting the multi-channel output of the therapeutic apparatus of the embodiment of the utility model comprises: a traditional multi-channel output adjustment device and a multi-channel output signal acquisition circuit, wherein the multi-channel output adjustment circuit comprises a single-chip microcomputer, a power amplifier unit, a multi-channel output adjustment potentiometer and a display screen, wherein the single-chip microcomputer is connected to the power amplifier unit, and the output end of the power amplifier unit is respectively connected to each potentiometer of the multi-channel output adjustment. The multi-channel signal acquisition circuit comprises each sampling unit, each sampling unit is respectively connected to the output end of each output adjustment potentiometer, and the output end of each sampling unit is respectively connected to each ADC port of the single-chip microcomputer, and the display screen is connected to the single-chip microcomputer.

[0028] In this embodiment, the sampling unit and the output circuit are connected in series, and the output current signal can be collected and fed back to the single-chip microcomputer to form a closed-loop circuit. Its working process: the single-chip microcomputer controls the power amplifier unit to generate a power signal, and the power signal is divided into multiple paths and output after being adjusted by the potentiometers A1-AN and B1-BN. Each sampling unit CA1-CAN and CB1-CBN is connected in series to an output circuit respectively, and the signal is output in each path (A1 output-AN output, B1 output-BN output) after passing through the sampling unit. In order to avoid loss, the voltage signal obtained by current sampling is generally small (mV level). The sampling unit is composed of an operational amplifier. The operational amplifier in the sampling unit amplifies the sampling signal and sends it to each ADC port of the single-chip microcomputer (ADCA1-ADCAN, ADCB1-SDCBN). After the single-chip microcomputer receives the sampled analog signal, it completes the digital-to-analog conversion through internal program calculation, converts the analog signal into a digital signal, and then converts the signal into an image signal, and sends the image signal to the display screen, which displays the output current intensity of each path in digital or bar graph form.

[0029] When you need to display the output voltage and current simultaneously, you can Figure 2 and Figure 3 The parallel and series modes of the two sampling units are used simultaneously to obtain the output voltage signal and the output current signal at the same time, which are processed by the single-chip microcomputer and sent to the display screen to display the output voltage and output current intensity at the same time.

[0030] The multi-channel output adjustment and display device of the therapeutic apparatus according to the embodiment of the utility model solves the problem that the strength of the multi-channel output signals cannot be displayed or is not clearly displayed in the prior art. The output strength of each channel is displayed intuitively, which is convenient for interpretation. The technology has the following characteristics:

[0031] 1. The output intensity display of each channel is completely independent and does not affect each other.

[0032] 2. It can dynamically display the actual output strength of each channel in real time without delay.

[0033] 3. The output display accuracy is determined by the ADC function of the microcontroller and can reach an accuracy of one thousandth.

[0034] 4. No additional operations are required during use and no training is required, making it easy to use.

[0035] 5. The added multi-channel signal acquisition circuit, each sampling unit is composed of only precision resistors or precision resistors plus operational amplifiers, the circuit is simple and low cost.

[0036] 6. The sampling unit can collect output voltage signals by connecting it in parallel with the output circuit, can collect output current signals by connecting it in series with the output circuit, or can collect voltage and current signals simultaneously by connecting it in parallel with the output circuit.

[0037] 7. Rationally utilize the multi-channel ADC port resources and display screen resources of the microcontroller in traditional equipment to achieve multi-channel output display function without adding more hardware.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A therapeutic instrument multi-channel output adjustment display device, characterized in that: include: A multi-channel output adjustment circuit and a multi-channel signal acquisition circuit and an adaptive module, wherein the multi-channel output adjustment circuit comprises a single-chip microcomputer, a power amplifier unit, a multi-channel output adjustment potentiometer and a display screen, wherein the single-chip microcomputer is connected to the power amplifier unit, and the output end of the power amplifier unit is respectively connected to each multi-channel output adjustment potentiometer, wherein the multi-channel signal acquisition circuit comprises each sampling unit, wherein the input end of each sampling unit is respectively connected to the output end of each output adjustment potentiometer, and the output end of each sampling unit is respectively connected to each ADC port of the single-chip microcomputer, wherein the display screen is connected to the single-chip microcomputer, and each sampling unit feeds back the collected output analog signal to the single-chip microcomputer to form a signal closed-loop circuit, performs analog-to-digital conversion and image signal conversion through the internal program of the single-chip microcomputer, and then sends the collected output analog signal to the display screen to display the output intensity in a bar graph and digital form.

2. The therapeutic apparatus multi-channel output adjustment and display device according to claim 1, characterized in that: For devices with a sufficiently large output voltage, the sampling unit is composed of precision resistors, and the sampling signal is directly sent to the ADC port of the microcontroller after resistor voltage division; for devices with an output voltage in the mV level, the sampling unit is composed of an operational amplifier, and the operational amplifier in the sampling unit amplifies the sampling signal and sends it to each ADC port of the microcontroller.

3. The therapeutic apparatus multi-channel output adjustment and display device according to claim 1, characterized in that: The sampling unit is connected in parallel with the output line to collect the output voltage signal, the sampling unit is connected in series with the output line to collect the output current signal, and the sampling unit is connected in parallel or in series with the output line to collect the voltage and current signals at the same time.

Images