Polarization high voltage detection device and method

Abstract

The present application provides a polarization high-voltage detection device and method, which relates to the field of electronic technology. The polarization high-voltage detection device includes an induction detection device and a voltage display device. The induction detection device includes a high-voltage transmission circuit. The input end of the high-voltage transmission circuit is connected to the output end of a polarization power supply. The output end of the high-voltage transmission circuit is connected to a polarization device. The polarization power supply inputs a high-voltage signal to the polarization device through the high-voltage transmission circuit to provide a polarization voltage. The induction detection device is used to sense and detect the voltage value of the high-voltage signal in the high-voltage transmission circuit. The voltage display device is connected to the induction detection device to display the voltage value of the high-voltage signal output by the polarization power supply measured by the induction detection device. The above-mentioned polarization high-voltage detection device and method can realize non-contact detection of the voltage value of the high-voltage signal output by the polarization power supply, and has high safety.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of electronic technology, and in particular to a polarization high voltage detection device and method. Background Art

[0002] There is a key link in the production process of condenser microphone capsules, which is to polarize the electret capacitor plate with high voltage so that the electret obtains a stable charge and becomes a charged body. In the polarization process, the stability of the high voltage is very important and directly determines the quality of the electret condenser microphone capsule. Therefore, the output end of the polarization high voltage must be tested in real time from beginning to end.

[0003] In the prior art, high voltage is usually detected using a contact high voltage rod, but the contact high voltage rod has poor safety during detection and is prone to contact sparking during testing, which can interfere with the controller of the polarization power supply and affect the stability of the polarization power supply. Summary of the invention

[0004] The embodiments of the present application provide a polarization high voltage detection device and method, which can solve the problems of poor safety of contact high voltage rods during detection, easy contact sparking during testing, and sparking interfering with the controller of the polarization power supply and affecting the stability of the polarization power supply.

[0005] An embodiment of the present application provides a polarization high voltage detection device, comprising:

[0006] Induction detection device and voltage display device;

[0007] The induction detection device includes a high-voltage transmission circuit, the input end of the high-voltage transmission circuit is connected to the output end of the polarization power supply, the output end of the high-voltage transmission circuit is connected to the polarization device, and the polarization power supply inputs a high-voltage signal to the polarization device through the high-voltage transmission circuit to provide a polarization voltage;

[0008] The induction detection device is used to sense and detect the voltage value of the high voltage signal in the high voltage transmission circuit;

[0009] The voltage display device is connected to the induction detection device and is used to display the voltage value of the high voltage signal output by the polarization power supply measured by the induction detection device.

[0010] On the other hand, an embodiment of the present application provides a polarization high voltage detection method, comprising: detecting the voltage value of the high voltage signal output by the polarization power supply by the induction detection device in the polarization high voltage detection device as described above, and displaying the voltage value of the high voltage signal by the voltage display device in the polarization high voltage detection device.

[0011] It can be seen from the above-mentioned embodiments of the present application that the polarization high-voltage detection device includes an induction detection device and a voltage display device. The induction detection device includes a high-voltage transmission circuit, the input end of the high-voltage transmission circuit is connected to the output end of the polarization power supply, the output end of the high-voltage transmission circuit is connected to the polarization device, the polarization power supply inputs the high-voltage signal to the polarization device through the high-voltage transmission circuit to provide a polarization voltage, and the induction detection device is used to sense and detect the voltage value of the high-voltage signal in the high-voltage transmission circuit, thereby improving the safety of the detection, avoiding the sparking caused by contact measurement, and the problem that the sparking will interfere with the controller of the polarization power supply and affect the stability of the polarization power supply. The voltage display device is connected to the induction detection device and is used to display the voltage value of the high-voltage signal output by the polarization power supply measured by the induction detection device, so that the user can monitor the voltage stability of the high-voltage signal output by the polarization power supply through the voltage display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention.

[0013] Figure 1 A schematic diagram of the structure of a polarization high voltage detection device provided in one embodiment of the present application;

[0014] Figure 2 A schematic diagram of the structure of an induction detection device in a polarization high voltage detection device provided in an embodiment of the present application;

[0015] Figure 3 A schematic structural diagram of a polarization high voltage detection device provided in another embodiment of the present application;

[0016] Figure 4 A schematic diagram of the structure of an undervoltage alarm device in a polarization high voltage detection device provided in an embodiment of the present application;

[0017] Figure 5 This is a schematic diagram of the structure of the undervoltage alarm circuit in the polarization high voltage detection device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1, a schematic diagram of the structure of a polarization high voltage detection device provided by an embodiment of the present application. For ease of explanation, only the parts related to the embodiment of the present application are shown. The polarization high voltage detection device can realize non-contact detection of the high voltage output by the polarization power supply, specifically, the high voltage output by the polarization power supply is obtained by using the high voltage in the high voltage transmission circuit connected to the polarization power supply by electromagnetic induction using an induction detection device. The polarization high voltage detection device includes:

[0020] Induction detection device 10 and voltage display device 20;

[0021] The induction detection device 10 includes a high-voltage transmission circuit 11, which is built in the induction detection device 10, the input end of the high-voltage transmission circuit 11 is connected to the output end of the polarization power supply 30, and the output end of the high-voltage transmission circuit 11 is connected to the polarization device 40 for polarizing the electret capacitor plate;

[0022] The polarization power supply 30 inputs a high voltage signal to the polarization device 40 through the high voltage transmission circuit 11 to provide a polarization voltage. The high voltage signal is a high voltage of about 30,000 volts in practical applications.

[0023] The sensing detection device 10 is used to sense and detect the voltage value of the high voltage signal in the high voltage transmission circuit 11 .

[0024] The voltage display device 20 is connected to the induction detection device 10 and is used to display the voltage value of the high voltage signal output by the polarization power supply 30 measured by the induction detection device 10 .

[0025] In the embodiment of the present application, the polarization high-voltage detection device includes an induction detection device and a voltage display device, the induction detection device includes a high-voltage transmission circuit, the input end of the high-voltage transmission circuit is connected to the output end of the polarization power supply, the output end of the high-voltage transmission circuit is connected to the polarization device, the polarization power supply inputs the high-voltage signal to the polarization device through the high-voltage transmission circuit to provide a polarization voltage, the induction detection device is used to sense and detect the voltage value of the high-voltage signal in the high-voltage transmission circuit, improves the safety of the detection, avoids the sparking caused by contact measurement, and the sparking will interfere with the controller of the polarization power supply and affect the stability of the polarization power supply. The voltage display device is connected to the induction detection device, and is used to display the voltage value of the high-voltage signal output by the polarization power supply measured by the induction detection device, so that the user can monitor the voltage stability of the high-voltage signal output by the polarization power supply through the voltage display device.

[0026] Further, see Figure 2 , Figure 2It is a structural schematic diagram of the induction detection device 10. The induction detection device 10 also includes a vacuum tube 12 and an induction coil 13 wound around the outer wall of the vacuum tube 12. The interior of the vacuum tube 12 is a vacuum environment. In the vacuum environment, the high-voltage signal transmission in the high-voltage transmission circuit 11 is stable and is not affected by changes in the external environment. The voltage value of the high-voltage signal is detected more accurately.

[0027] The two ends of the vacuum tube 12 are respectively provided with connection terminals, namely, a first connection terminal 121 and a second connection terminal 122, which can realize electrical connection between the high-voltage transmission circuit 11 and the polarization power supply 30 and the polarization device 40. The connection terminals can be electrode terminals. The high-voltage transmission circuit 11 is connected to the polarization power supply 30 and the polarization device 40 through the connection terminals, specifically, the first connection terminal 121 is connected to the polarization power supply 30, the second connection terminal 122 is connected to the polarization device 40, and the induction coil 13 is connected to the voltage display device 20.

[0028] The induction coil 13 has a preset diameter and a preset number of turns to reduce the voltage value of the high voltage signal output by the polarization power supply 30 to a sampling voltage value that meets the detection range of the voltage display device 20 according to a preset sampling ratio.

[0029] Specifically, the induction coil 13 can be a high-voltage enameled wire with a diameter of 1 mm, which is wound 10-15 turns on the vacuum tube 30, and the preset sampling ratio is about 10000:3. When the voltage value of the high-voltage signal is 30,000 volts, the sampling voltage value is about 10 volts.

[0030] Preferably, the model of the voltage display device 20 is R6451A, which is a 5-bit high-precision digital voltage display device, and the number displayed by the voltage display device 20 is the voltage value of the high-voltage signal output by the polarization power supply 10. The user can confirm whether the high-voltage signal output by the polarization power supply 10 is stable by observing the value displayed by the voltage display device 20.

[0031] Furthermore, the high-voltage transmission device 11 includes a high-voltage line 111 and a high-voltage rectifying diode 112 connected to the high-voltage line. The high-voltage rectifying diode 112 is used to rectify the high-voltage signal flowing through the high-voltage line from an AC signal to a pulsating DC signal. Specifically, the high-voltage line 111 is divided into two sections, one of which is connected to the first connection terminal 121 and the positive electrode of the high-voltage rectifying diode 112, and the other is connected to the negative electrode of the high-voltage rectifying diode 112 and the second connection terminal 122. The AC high-voltage signal of the polarization power supply 10 enters the vacuum tube 12 through the first connection terminal 121, passes through the high-voltage rectifying diode 112, and becomes a pulsating DC high voltage, which is output to the polarization device 40 from the second connection terminal 122, and polarizes the discharge of the electret device to complete the polarization process.

[0032] Further, see Figure 3, the polarization high voltage detection device also includes: an undervoltage alarm device 50;

[0033] The undervoltage alarm device 50 is connected to the sensing detection device 10 and is used to alarm when the sampled voltage value detected by the sensing device 10 is lower than a preset value, so as to promptly remind the user of the insufficiency of the output voltage of the polarization power supply 30 .

[0034] Further, see Figure 4 The undervoltage alarm device 50 includes an undervoltage alarm circuit 51 and an audible and visual alarm 52. The input end of the undervoltage alarm circuit 51 is connected to the induction coil 13, and the output end is connected to the audible and visual alarm 52. The audible and visual alarm 52 includes a light emitting diode and a piezoelectric horn. The model of the audible and visual alarm 52 can be HXA-B02.

[0035] It should be noted that the induction coil 13 has a preset diameter and a preset number of turns, and the sampled voltage value obtained by induction also meets the required range of the input voltage of the undervoltage alarm circuit 51 .

[0036] The undervoltage alarm circuit 51 includes: an undervoltage detection module 53, an alarm driving module 54 and an acousto-optic driving module 55;

[0037] The undervoltage detection module 53 and the sound and light driving module 55 are connected to the alarm driving module 54, and the alarm driving module 54 is connected to the sound and light alarm 52;

[0038] The undervoltage detection module 53 is used to determine whether the input sampling voltage value is less than a preset value. If so, the alarm driving module 54 is driven to start working. The alarm driving module 54 simultaneously receives the sound and light driving signal sent by the sound and light driving module 55, and drives the sound and light alarm 52 to start the sound and light alarm.

[0039] The circuit structure diagram of the undervoltage alarm circuit 51 is shown in Figure 5 .exist Figure 5 In the embodiment, the undervoltage detection module 53 is G4, the driving alarm module is G3, and the sound and light driving module 55 includes G1 and G2.

[0040] Among them, G4 is a chip including a plurality of NAND gate circuits, specifically integrating 4 NAND gate circuits, and the chip model is, for example, CC4011.

[0041] G3 is a driving alarm circuit, which is specifically connected when G4 outputs a high level, and cooperates with the sound and light driving module 55 to drive the sound and light alarm 52 to sound and light alarm, and the specific circuit structure is not limited.

[0042] The sound and light driving module 55 includes a first oscillator G1 and a second oscillator G2. The first oscillator G1 and the second oscillator G2 are used to emit a flash and a sound pulse with the same frequency as the flash.

[0043] The specifications of the components in the undervoltage alarm circuit 51 can be found in Figure 5 The mark in .

[0044] Working principle of undervoltage alarm circuit 51:

[0045] The voltage input from the input end of the undervoltage alarm circuit 51 is the sampled voltage value output by the induction coil 13. When the sampled voltage is 10 volts, it means that the high voltage value output by the polarization power supply 30 is sufficient to achieve the polarization of the electret. At this time, G4 outputs a low level, G3 outputs a high level, and the light-emitting diode in the sound and light alarm 52 is lit to emit constant light. Because it is a constant voltage, the piezoelectric horn of the sound and light alarm 52 does not make a sound. When the input voltage drops to a set value, which can be set to 9.5 volts, one input end of G4 becomes a low voltage, then G4 outputs a high level, and G3 is turned on. The sound and light pulses generated by G1 and G2 flash the light-emitting diode through G3, and the piezoelectric horn emits a sound of the same frequency, which is the oscillator frequency of G1 and G2, about 3 times per second.

[0046] W in the undervoltage alarm circuit 51 is a potentiometer, that is, an adjustable resistor. Before the undervoltage alarm circuit 51 works, to adjust W, it is only necessary to adjust the polarization power supply 10 according to the preset sampling ratio of 10000:3, add the lowest value allowed, such as 9.5 volts, and then change the position of the movable arm of the potentiometer W so that the output of G4 just flips and the indicator light flashes to warn.

[0047] The above-mentioned technologies are not detailed here and will not be described in detail. Please refer to the existing technologies and common technologies in this field.

[0048] An embodiment of the present application also provides a polarization high voltage detection method, comprising: detecting the voltage value of the high voltage signal output by the polarization power supply 30 through the induction detection device 10 in the polarization high voltage detection device described in the above embodiment, and displaying the voltage value of the high voltage signal through the voltage display device 20 in the polarization high voltage detection device.

[0049] Furthermore, the undervoltage alarm device 50 in the above-mentioned polarization high-voltage detection device can timely remind the polarization power supply 30 of insufficient output voltage. The undervoltage alarm device 50 is used to perform an audible and visual alarm when the sampled voltage value detected by the detection sensing device 10 is lower than a preset value.

[0050] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0051] In the embodiment of the present application, the polarization high-voltage detection device includes an induction detection device and a voltage display device, the induction detection device includes a high-voltage transmission circuit, the input end of the high-voltage transmission circuit is connected to the output end of the polarization power supply, the output end of the high-voltage transmission circuit is connected to the polarization device, the polarization power supply inputs the high-voltage signal to the polarization device through the high-voltage transmission circuit to provide a polarization voltage, and the voltage value of the high-voltage signal in the high-voltage transmission circuit is sensed and detected by the induction detection device, thereby improving the safety of the detection, avoiding the sparking caused by contact measurement, and the problem that the sparking will interfere with the controller of the polarization power supply and affect the stability of the polarization power supply. The voltage value of the high-voltage signal output by the polarization power supply measured by the induction detection device is displayed by the voltage display device, so that the user can monitor the voltage stability of the high-voltage signal output by the polarization power supply through the voltage display device, which is convenient for the user to find the undervoltage of the high-voltage signal and other situations.

[0052] The above is a description of the polarization high voltage detection device and method provided by the present invention. For technicians in this field, according to the ideas of the embodiments of this application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A polarization high voltage detection device, characterized in that: include: Induction detection device and voltage display device; The induction detection device includes a high-voltage transmission circuit, the input end of the high-voltage transmission circuit is connected to the output end of the polarization power supply, the output end of the high-voltage transmission circuit is connected to the polarization device, and the polarization power supply inputs a high-voltage signal to the polarization device through the high-voltage transmission circuit to provide a polarization voltage; The induction detection device is used to sense and detect the voltage value of the high voltage signal in the high voltage transmission circuit; The voltage display device is connected to the induction detection device and is used to display the voltage value of the high voltage signal output by the polarization power supply measured by the induction detection device; Wherein, the high-voltage transmission circuit includes a high-voltage line and a high-voltage rectifier diode connected to the high-voltage line, and the high-voltage rectifier diode is used to rectify the high-voltage signal from an AC signal to a pulsating DC signal; The induction detection device also includes a vacuum tube and an induction coil wound on the outer wall of the vacuum tube corresponding to the position of the first section of the high-voltage line, wherein the first section of the high-voltage line is the high-voltage line between the polarization power supply and the high-voltage rectifier diode.

2. The polarization high voltage detection device according to claim 1, characterized in that: Both ends of the vacuum tube are respectively provided with connection terminals, and the high-voltage transmission circuit is connected to the polarization power supply and the polarization device through the connection terminals.

3. The polarization high voltage detection device according to claim 2, characterized in that: The induction coil has a preset diameter and a preset number of turns, so as to reduce the voltage value of the high voltage signal to a sampling voltage value that meets the detection range of the voltage display device according to a preset sampling ratio.

4. The polarization high voltage detection device according to claim 3, characterized in that: The polarization high voltage detection device also includes: an undervoltage alarm device; The undervoltage alarm device is connected to the induction detection device and is used to alarm when the sampled voltage value detected by the detection induction device is lower than a preset value.

5. The polarization high voltage detection device according to claim 4, characterized in that: The undervoltage alarm device comprises an undervoltage alarm circuit and an audible and visual alarm; The input end of the undervoltage alarm circuit is connected to the induction coil, and the output end is connected to the sound and light alarm.

6. The polarization high voltage detection device according to claim 5, characterized in that: The undervoltage alarm circuit comprises: Undervoltage detection module, alarm drive module and sound and light drive module; The undervoltage detection module and the sound and light driving module are connected to the alarm driving module, and the alarm driving module is connected to the sound and light alarm; The undervoltage detection module is used to determine whether the input sampling voltage value is less than the preset value. If it is, the alarm driving module is driven to start working. The alarm driving module simultaneously receives the sound and light driving signal sent by the sound and light driving module and drives the sound and light alarm to start alarming.

7. The polarization high voltage detection device according to claim 6, characterized in that: The undervoltage detection module includes a plurality of NAND gate circuits.

8. The polarization high voltage detection device according to claim 7, characterized in that: The acousto-optic driving module comprises: A first oscillator and a second oscillator, wherein the first oscillator and the second oscillator are used to emit a flash and a sound pulse with the same frequency as the flash.

9. A polarization high voltage detection method, characterized in that: include: The voltage value of the high-voltage signal output by the polarization power supply is detected by the induction detection device in the polarization high-voltage detection device as described in any one of claims 1 to 8, and the voltage value of the high-voltage signal is displayed by the voltage display device in the polarization high-voltage detection device.

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