Rescue information recorder

Abstract

The invention discloses a rescue information recorder, which comprises a first microphone, a voice wake-up module, a power supply control circuit, a second microphone and a voice recognition processor, and is characterized in that the first microphone is used for acquiring an audio signal; the voice wake-up module carries out control instruction identification on an audio signal output by the first microphone; the second microphone is used for acquiring an audio signal; the voice recognition processor performs voice recognition on the audio signal output by the second microphone; the power supply control circuit is used for performing on-off control on power supply of the voice recognition processor under the control of the voice wake-up module; when the voice awakening module recognizes a voice control instruction, power supply connection control is conducted on the voice recognition processor, and therefore automatic recognition and recording of oral medical advices in the rescue process can be achieved through the voice recognition processor; power supply of the voice recognition processor can be controlled through the voice wake-up module and the power supply control circuit, and power supply electric energy of the battery is saved.

Description

Technical Field

[0001] The invention relates to the field of information recorders, and in particular to a rescue information recorder. Background Art

[0002] Recorders are also called video and audio recorders or on-site recorders, which are used to record on-site voice and other information. In some special occasions, such as during the rescue of patients in hospitals, automatic recorders are usually needed to record the medical instructions of medical staff, record and save the data, and use them for medical instructions to patients to help them recover better.

[0003] At present, automatic information recorders usually use the full recording method to record the information during the rescue process. And in the later stage, key information such as key medical instructions are extracted manually, which is a relatively troublesome process. In addition, for the convenience of recording, existing automatic information recorders are usually powered by batteries, which consumes a lot of power and is difficult to meet application requirements. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one object of the present invention is to provide a rescue information recorder.

[0005] To achieve the above object, a rescue information recorder according to an embodiment of the present invention includes:

[0006] A first microphone, wherein the first microphone is used to obtain an audio signal;

[0007] A voice wake-up module, the voice wake-up module is connected to the first microphone to recognize the control instruction by the audio signal output by the first microphone;

[0008] A power supply control circuit, wherein the power supply control circuit is connected to the voice wake-up module;

[0009] A second microphone, the second microphone is used to obtain an audio signal;

[0010] A speech recognition processor is connected to the second microphone so as to perform speech recognition by means of the audio signal output by the second microphone; the power supply control circuit is used to perform switch control on the power supply of the speech recognition processor under the control of the speech wake-up module; wherein, when the speech wake-up module recognizes a voice control instruction, the power supply on the speech recognition processor is controlled.

[0011] Further, according to an embodiment of the present invention, the rescue information recorder further includes:

[0012] a first audio processing circuit, wherein the first microphone is connected to the voice wake-up module through the first audio processing circuit, and the first audio processing circuit is used to isolate, amplify and output the audio signal output by the first microphone;

[0013] A second audio processing circuit, the second microphone is connected to the voice wake-up module through the second audio processing circuit, and the second audio processing circuit is used to isolate, amplify and output the audio signal output by the second microphone.

[0014] Further, according to an embodiment of the present invention, the first audio processing circuit includes:

[0015] Transistor Q1, the base of the transistor Q1 is connected to the audio signal output end of the first microphone through the capacitor C1, the base of the transistor Q1 is also connected to the reference ground through the resistor R2, the base of the transistor Q1 is also connected to the power supply through the resistor R1, the emitter of the transistor Q1 is connected to the reference ground through the resistor R4, the collector of the transistor Q1 is connected to the power supply through the resistor R3, and the collector of the transistor Q1 is connected to the audio signal input end of the voice wake-up module.

[0016] Further, according to an embodiment of the present invention, the rescue information recorder further includes:

[0017] A volume wake-up circuit, wherein the audio signal output end of the first audio processing circuit is connected to the signal input end of the volume wake-up circuit, the output end of the volume wake-up circuit is connected to the power supply end of the voice wake-up module, and the volume wake-up circuit is used to judge the volume of the audio signal output by the first audio processing circuit, and when the volume exceeds a set value, the voice wake-up module is powered on and controlled.

[0018] Further, according to an embodiment of the present invention, the volume wake-up circuit includes:

[0019] A comparator U1, wherein a non-inverting input terminal of the comparator U1 is connected to an audio signal output terminal of the first audio processing circuit, and the comparator U1 is connected to a reference voltage input terminal;

[0020] A transistor Q2, wherein the base of the transistor Q2 is connected to the output end of the comparator U1 through a resistor R7, the emitter of the transistor Q2 is connected to a reference ground, and the collector of the transistor Q2 is connected to a power supply through a resistor R8;

[0021] MOS tube Q3, the gate of the MOS tube Q3 is connected to the collector of the triode Q2, the source of the MOS tube Q3 is connected to the power supply, and the drain of the MOS tube Q3 is connected to the power supply end of the voice wake-up module.

[0022] Further, according to an embodiment of the present invention, the volume wake-up circuit further includes: a power supply holding circuit, the power supply holding circuit is used to hold the high-level state of the high-level signal output by the comparator U1 for a set time; the power supply holding circuit includes:

[0023] A resistor R8, one end of which is connected to the output end of the comparator U1;

[0024] Capacitor C2, one end of the capacitor C2 is connected to the other end of the resistor R8, and the other end of the capacitor C2 is connected to the reference ground.

[0025] Further, according to an embodiment of the present invention, the power supply control circuit includes:

[0026] Transistor Q4, the base of the transistor Q4 is connected to the cathode of the diode D1 through the resistor R10, the anode of the diode D1 is connected to the power supply switching control terminal of the voice wake-up module, the base of the transistor Q4 is also connected to the cathode of the diode D2 through the resistor R10, the anode of the diode D2 is connected to the power supply maintenance control terminal of the voice recognition processor, the emitter of the transistor Q4 is connected to the reference ground, the collector of the transistor Q4 is connected to the anode of the diode D4, and the cathode of the diode D4 is connected to the power supply;

[0027] A relay switch K1, wherein one end of the controlled side of the relay switch K1 is connected to the collector of the transistor Q4, the other end of the controlled side of the relay switch K1 is connected to the power supply, one end of the switch side of the relay switch K1 is connected to the source of the MOS tube Q3, the other end of the switch side of the relay switch K1 is connected to the power supply end of the speech recognition processor, and the common end of the switch side of the relay switch K1 is connected to the power supply output end.

[0028] Further, according to an embodiment of the present invention, the rescue information recorder further includes a wireless communication circuit, the wireless communication circuit is used to wirelessly connect to the server, and the power supply control circuit further includes:

[0029] A transistor Q5, wherein the base of the transistor Q5 is connected to the power supply control terminal of the speech recognition processor through a resistor R17, the emitter of the transistor Q5 is connected to the reference ground, and the collector of the transistor Q5 is connected to the other end of the switch side of the relay switch K1 through a resistor R16;

[0030] MOS transistor Q6, the gate of the MOS transistor Q6 is connected to the collector of the transistor Q5, the source of the MOS transistor Q6 is connected to the other end of the switch side of the relay switch K1, and the power supply of the wireless communication circuit is electrically connected.

[0031] Further, according to an embodiment of the present invention, the rescue information recorder further includes: a power conversion circuit, the power conversion circuit is connected to the battery and the power supply control circuit respectively, so as to convert the voltage of the power supply output by the battery and control the output through the power supply control circuit; the power conversion circuit includes:

[0032] A power controller U3, wherein the input end of the power controller U3 is connected to the power output end of the battery, the conversion control end SW is connected to one end of the inductor L1, the other end of the inductor L1 is connected to the power input end of the power supply control circuit, and the power output end of the power controller U3 is also connected to the other end of the inductor L1;

[0033] a resistor R12, one end of the resistor R12 being connected to the other end of the inductor L1;

[0034] The resistor R13 has one end connected to the other end of the resistor R12, and the other end of the resistor R13 is connected to the reference ground.

[0035] Further, according to an embodiment of the present invention, the rescue information recorder further includes:

[0036] an identification state indicating circuit, the identification state indicating circuit comprising a light emitting diode D3 and a resistor R15, wherein an anode of the diode D3 is connected to the other end of the switch side of the relay switch K1, a cathode of the light emitting diode D3 is connected to one end of the resistor R15, and the other end of the resistor R15 is connected to a reference ground;

[0037] A storage circuit is connected to the speech recognition processor to store the speech data and the recognized text data under the action of the speech recognition processor.

[0038] The rescue information recorder provided by the embodiment of the present invention uses a first microphone to obtain audio signals; a voice wake-up module recognizes control instructions by the audio signal output by the first microphone; a second microphone is used to obtain audio signals; a voice recognition processor performs voice recognition on the audio signal output by the second microphone; the power supply control circuit is used to control the power supply of the voice recognition processor under the control of the voice wake-up module; wherein, when the voice wake-up module recognizes the voice control instruction, the power supply of the voice recognition processor is controlled to be turned on, so that the voice recognition processor can realize automatic recognition and recording of oral medical orders during the rescue process, which is convenient for medical staff to use; the power supply of the voice recognition processor can be controlled by the voice wake-up module and the power supply control circuit, saving battery power supply energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A structural block diagram of the rescue information recorder provided by the present invention;

[0040] Figure 2 This is a schematic diagram of the circuit structure of the rescue information recorder provided by the present invention.

[0041] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] In order to make those skilled in the art better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0043] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0044] See also Figure 1 and Figure 2 An embodiment of the present invention provides a rescue information recorder, comprising: a first microphone, a voice wake-up module, a power supply control circuit, a second microphone and a voice recognition processor, wherein the first microphone is used to obtain an audio signal; the voice wake-up module is connected to the first microphone to identify a control instruction by the audio signal output by the first microphone; the power supply control circuit is connected to the voice wake-up module; the second microphone is used to obtain an audio signal; the voice recognition processor is connected to the second microphone to perform voice recognition by the audio signal output by the second microphone; the power supply control circuit is used to control the power supply of the voice recognition processor to be switched on and off under the control of the voice wake-up module; wherein, when the voice wake-up module recognizes a voice control instruction, the voice recognition processor is powered on and off.

[0045] Specifically, Figure 1 and Figure 2As shown in , before the rescue information recorder is used, the corresponding staff voice and rescue keywords are recorded in advance through the rescue information recorder. In this way, when in use, the rescue information recorder can obtain the staff's voice signal through the first microphone. And transmit the sound signal to the voice wake-up module, because the voice wake-up module pre-stores the corresponding staff voice and rescue keyword information. Therefore, the voice recognition processor can perform voice recognition on the keywords in the staff's voice signal. When a specific keyword is recognized, the voice recognition processor determines that the corresponding voice control instruction has been recognized. At this time, the voice recognition processor is powered on and controlled. In this way, the voice recognition processor can enter the working state due to the power supply. That is, before the voice wake-up module has not recognized the corresponding voice control instruction, the voice recognition processor is in a power-off state. In this way, the voice recognition processor consumes a lot of power in the process of recognizing the audio signal. For easy carrying, the rescue information recorder is designed to be powered by a battery. Therefore, in order to minimize the loss of battery power, the power supply of the relatively power-consuming voice recognition processor is disconnected when voice recognition is not performed, thereby extending the battery life of the rescue information recorder. The actual application time requirements of the rescue information recorder are met. When the voice recognition processor is under the control of the voice wake-up module, the power supply of the voice recognition processor is turned on through the power supply control circuit, and at the same time, the power supply of the second microphone is also turned on. In this way, the voice recognition processor can obtain a sound signal through the second microphone. Among them, the sound signal may include an oral medical order signal. The voice recognition processor automatically recognizes and records the oral medical order, and the recorded content can reflect the time and specific content of the medical order. In this way, during the medical staff's rescue of the patient, the oral medical order information can be recorded in real time, thereby saving the precious time of the medical staff in rescuing the patient. In this way, the voice recognition processor can realize the automatic recognition and recording of the oral medical order during the rescue process, which is convenient for the use of medical staff; the power supply of the voice recognition processor can be controlled by the voice wake-up module and the power supply control circuit, saving the power supply energy of the battery.

[0046] See also Figure 1 and Figure 2 The rescue information recorder also includes: a first audio processing circuit and a second audio processing circuit. The first microphone is connected to the voice wake-up module through the first audio processing circuit. The first audio processing circuit is used to isolate, amplify and output the audio signal output by the first microphone; the second microphone is connected to the voice wake-up module through the second audio processing circuit. The second audio processing circuit is used to isolate, amplify and output the audio signal output by the second microphone. Figure 2As shown in, the first audio processing circuit includes: a transistor Q1, the base of the transistor Q1 is connected to the audio signal output end of the first microphone through a capacitor C1, the base of the transistor Q1 is also connected to the reference ground through a resistor R2, the base of the transistor Q1 is also connected to the power supply through a resistor R1, the emitter of the transistor Q1 is connected to the reference ground through a resistor R4, the collector of the transistor Q1 is connected to the power supply through a resistor R3, and the collector of the transistor Q1 is connected to the audio signal input end of the voice wake-up module.

[0047] Specifically, Figure 2 As shown in , the circuit structures of the first audio processing circuit and the second audio processing circuit are basically the same, and their working principles are also basically the same. Here, only the working principle of the first audio processing circuit is described in detail. Figure 2 As shown in , the sound signal is received by the first microphone M1 and converted into a corresponding audio electrical signal and then outputted. The output signal is isolated by the capacitor C1 as a DC signal and then outputted to the base of the transistor Q1. The transistor Q1 is biased in the amplification area through resistors R1, R2, R3 and R4, so that the audio signal outputted by the microphone M1 can be amplified and then outputted to the voice wake-up module, so that the voice wake-up module can recognize the voice control command of the sound signal. Among them, the voice wake-up module may include a voice recognition chip U2, which may adopt an existing chip, because the voice recognition chip recognizes only specific wake-up commands. It is not necessary to recognize all voice signals, so the price is relatively cheap and the power consumption is relatively low. Therefore, it can be used as a voice wake-up front end.

[0048] See also Figure 1 and Figure 2, the rescue information recorder also includes: a volume wake-up circuit, the audio signal output end of the first audio processing circuit is connected to the signal input end of the volume wake-up circuit, the output end of the volume wake-up circuit is connected to the power supply end of the voice wake-up module, and the volume wake-up circuit is used to judge the volume of the audio signal output by the first audio processing circuit, and when the volume exceeds the set value, the voice wake-up module is powered on and controlled. Specifically, in another embodiment of the present invention, in order to further reduce the power consumption of the battery. The power supply of the voice wake-up module can be further disconnected. Then the power supply of the voice wake-up module is controlled by the volume wake-up circuit. In many cases, when the staff does not record the oral medical advice, the voice wake-up module does not need to work continuously. Therefore, the volume of the sound signal is judged by the volume wake-up circuit. Only when the volume is greater than the set volume, the voice wake-up module is started to identify a specific wake-up instruction. When the volume is less than the set volume, the surrounding environment is in a relatively quiet state, and the staff does not record the oral medical advice. Therefore, the power supply of the language wake-up module can be further disconnected to further save battery power consumption.

[0049] See also Figure 2 The volume wake-up circuit includes: a comparator U1, a transistor Q2 and a MOS tube Q3, the non-inverting input terminal of the comparator U1 is connected to the audio signal output terminal of the first audio processing circuit, and the comparator U1 is connected to the reference voltage input terminal; the base of the transistor Q2 is connected to the output terminal of the comparator U1 through a resistor R7, the emitter of the transistor Q2 is connected to the reference ground, and the collector of the transistor Q2 is connected to the power supply through a resistor R8; the gate of the MOS tube Q3 is connected to the collector of the transistor Q2, the source of the MOS tube Q3 is connected to the power supply, and the drain of the MOS tube Q3 is connected to the power supply terminal of the voice wake-up module.

[0050] like Figure 2As shown in , the working process of the volume wake-up circuit is that the audio signal output by the first audio processing circuit can be compared with the reference signal through the comparator U1. When the audio signal output by the first audio processing circuit is greater than the reference signal, the comparator U1 can output a high-level signal. The high-level signal can be output to the base of the transistor Q2 through the resistor R7, so that the transistor Q2 is turned on, and then the gate of the MOS tube Q3 is pulled down to a low-level signal. In this way, the MOS tube Q3 is also turned on, and the power supply Vdd can be output to the power supply end of the voice wake-up module through the MOS tube Q3, thereby powering the voice wake-up module. The voice wake-up module begins to recognize specific command sound signals. On the contrary, when the surrounding environment is relatively quiet, the volume of the sound signal output by the first audio processing circuit is relatively small. At this time, the comparator U1 outputs a low-level signal, so that the transistor Q2 and the MOS tube Q3 are both in the cut-off state. The power supply Vdd cannot be output to the voice wake-up module, so that the voice wake-up module does not start working due to lack of power. This can further save battery power consumption.

[0051] See also Figure 2 , the volume wake-up circuit also includes: a power supply holding circuit, the power supply holding circuit includes a resistor R8 and a capacitor C2, and the power supply holding circuit is used to maintain the high-level state of the high-level signal output by the comparator U1 for a set time; one end of the resistor R8 is connected to the output end of the comparator U1; one end of the capacitor C2 is connected to the other end of the resistor R8, and the other end of the capacitor C2 is connected to the reference ground. The conduction state of the transistor Q2 can be maintained for a set time through the power supply holding circuit. Since people may speak intermittently, the high-level signal output by the comparator U1 can be maintained in a high-level state for a set time through the power supply holding circuit, thereby maintaining the continuous conduction of the MOS tube Q3 within the set time. Avoid power supply interruption of the voice wake-up module during voice recognition and ensure the stability of the circuit.

[0052] See also Figure 2The power supply control circuit includes: a transistor Q4 and a relay switch K1, the base of the transistor Q4 is connected to the cathode of the diode D1 through the resistor R10, the anode of the diode D1 is connected to the power supply switching control end of the voice wake-up module, the base of the transistor Q4 is also connected to the cathode of the diode D2 through the resistor R10, the anode of the diode D2 is connected to the power supply maintenance control end of the voice recognition processor, the emitter of the transistor Q4 is connected to the reference ground, the collector of the transistor Q4 is connected to the anode of the diode D4, and the cathode of the diode D4 is connected to the power supply; one end of the controlled side of the relay switch K1 is connected to the collector of the transistor Q4, the other end of the controlled side of the relay switch K1 is connected to the power supply, one end of the switch side of the relay switch K1 is connected to the source of the MOS tube Q3, the other end of the switch side of the relay switch K1 is connected to the power supply end of the voice recognition processor, and the common end of the switch side of the relay switch K1 is connected to the power supply output end.

[0053] Specifically, the working process of the power supply control circuit is that when the voice wake-up module recognizes a specific command signal and determines that the medical staff needs to record the doctor's order, a high-level signal can be output to the anode of the diode D1 through the control end. The high-level signal is output to the base of the transistor Q4 through the diode D1, so that the transistor Q4 is turned on, and the controlled side of the relay switch K1 generates a corresponding magnetic current, which can connect the common end of the switch side of the relay switch K1 with the power supply end of the voice recognition processor, so that the power supply Vcc is output to power the voice recognition processor. After the voice recognition processor starts working, it outputs a high-level signal to the anode of the diode D2, and outputs a high-level signal to the base of the transistor Q4 through the diode D2, so that the transistor Q4 remains in the on state, thereby maintaining the power supply of the voice recognition processor. Among them, the voice wake-up module can maintain short-term power supply through capacitor C8 at the moment of power failure, thereby maintaining the conduction state of the transistor Q4, and the voice wake-up module is completely in a disconnected state until the voice recognition processor starts normally. When the voice recognition processor starts normally, the volume wake-up circuit and the first audio processing circuit are all in a power-off state, which can further reduce the loss of battery power. When the voice recognition processor starts normally, the voice recognition processor can automatically recognize and record oral medical orders and maintain its own power supply. Until the voice recognition processor determines that the oral medical order recording is completed and no language recognition is required, it can output a low voltage level to the diode D2. At this time, the transistor Q4 is cut off, and the relay switch K1 is reset due to the lack of magnetic attraction current. The power supply Vcc continues to power the volume wake-up circuit, and the power supply of the voice recognition processor is disconnected.

[0054] See also Figure 1 and Figure 2 The rescue information recorder also includes a wireless communication circuit, which is used to wirelessly connect to the server, and the power supply control circuit also includes: a transistor Q5 and a MOS tube Q6, the base of the transistor Q5 is connected to the power supply control end of the voice recognition processor through a resistor R17, the emitter of the transistor Q5 is connected to the reference ground, and the collector of the transistor Q5 is connected to the other end of the switch side of the relay switch K1 through a resistor R16;

[0055] The gate of the MOS tube Q6 is connected to the collector of the transistor Q5, the source of the MOS tube Q6 is connected to the other end of the switch side of the relay switch K1, and the power supply of the wireless communication circuit is connected. Since the rescue information recorder is a portable device, the automatically identified and recorded oral medical orders can be sent back to the server through the wireless communication circuit. This is convenient for medical staff to review and further process. The power supply of the wireless communication circuit can also be further controlled by the power supply control circuit. Specifically, after the voice recognition processor works normally, when the oral medical order information is recognized and needs to be sent back to the server, a high-level signal can be output to the base of the transistor Q5, so that the transistor Q5 can be turned on, and then the source and drain of the MOS tube Q6 are turned on, and the power supply is output to the power supply end of the wireless communication circuit. The wireless communication circuit starts normally, and communicates with the voice recognizer through the communication interface, receives the oral medical order record information of the voice recognizer, and sends it back to the server wirelessly. Among them, the wireless communication circuit may include a wireless module U4 and a wireless signal filtering circuit. The wireless module U4 may be Bluetooth, WIFI, Zigbee or a mobile 4G, 5G module. The wireless signal filtering circuit may include a capacitor C10, an inductor L2, a capacitor C12, an inductor L3 and a capacitor C11. The capacitor C10, the inductor L2, the capacitor C12, the inductor L3 and the capacitor C11 constitute a filtering circuit to filter the input and output signals of the wireless module U4 to filter out interference signals and ensure the reliability of the wireless signal connection.

[0056] See also Figure 1 and Figure 2The rescue information recorder also includes: a power conversion circuit, which is connected to the battery and the power supply control circuit respectively, so as to control the output of the battery output power supply through the power supply control circuit after voltage conversion; the power conversion circuit includes: a power controller U3, a resistor R12 and a resistor R13; the input end of the power controller U3 is connected to the battery power output end, the conversion control end SW is connected to one end of the inductor L1, the other end of the inductor L1 is connected to the power supply input end of the power supply control circuit, and the power output end of the power controller U3 is also connected to the other end of the inductor L1; one end of the resistor R12 is connected to the other end of the inductor L1; one end of the resistor R13 is connected to the other end of the resistor R12, and the other end of the resistor R13 is connected to the reference ground. Specifically, a step-down circuit can be formed between the power controller U3 and the inductor L1, and the battery output power can be output as a voltage. The resistor R12 and the resistor R13 form a voltage divider circuit, and the output power is divided and then fed back to the voltage feedback end of the power controller U3. The power controller U3 performs voltage stabilization control on the output voltage according to the feedback voltage value to ensure the stability of the voltage value of the power supply Vcc.

[0057] See also Figure 1 and Figure 2 The rescue information recorder also includes: an identification status indication circuit, the identification status indication circuit includes a light-emitting diode D3 and a resistor R15, the anode of the diode D3 is connected to the other end of the switch side of the relay switch K1, the cathode of the light-emitting diode D3 is connected to one end of the resistor R15, and the other end of the resistor R15 is connected to the reference ground; when the power supply of the voice recognition processor is turned on, the power supply can light up the light-emitting diode D3. Correspondingly, when the voice recognition processor is disconnected from the power supply, the light-emitting diode D3 is also extinguished accordingly. Thereby, the working status of the voice recognition processor can be indicated.

[0058] See also Figure 1 and Figure 2 The rescue information recorder further includes: a storage circuit, which is connected to the speech recognition processor to store the speech data and the recognized text data under the action of the speech recognition processor. Figure 1 As shown in the figure, the audio signal and text information recognized by the speech recognition processor can be locally stored through the storage circuit. When the audio signal and text information are stored to a certain amount of storage, the stored information is sent to the remote server through the wireless communication module. In this way, the data cannot be transmitted back to the server in real time, thereby further saving the battery power loss.

[0059] The above are only embodiments of the present invention, but they do not limit the patent scope of the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features with equivalent ones. Any equivalent structure made by using the contents of the present invention specification and drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", 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 present invention. 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 may be combined in any one or more embodiments or examples in a suitable manner.

[0061] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention, and all of these are within the scope of protection of the present invention.

Claims

1. A rescue information recorder, characterized in that: include: A first microphone, wherein the first microphone is used to obtain an audio signal; A voice wake-up module, the voice wake-up module is connected to the first microphone to recognize the control instruction by the audio signal output by the first microphone; A power supply control circuit, wherein the power supply control circuit is connected to the voice wake-up module; A second microphone, the second microphone is used to obtain an audio signal; A speech recognition processor is connected to the second microphone so as to perform speech recognition by means of the audio signal output by the second microphone; the power supply control circuit is used to perform switch control on the power supply of the speech recognition processor under the control of the speech wake-up module; wherein, when the speech wake-up module recognizes a voice control instruction, the power supply on the speech recognition processor is controlled.

2. The rescue information recorder according to claim 1, characterized in that: Also includes: a first audio processing circuit, wherein the first microphone is connected to the voice wake-up module through the first audio processing circuit, and the first audio processing circuit is used to isolate, amplify and output the audio signal output by the first microphone; A second audio processing circuit, the second microphone is connected to the voice wake-up module through the second audio processing circuit, and the second audio processing circuit is used to isolate, amplify and output the audio signal output by the second microphone.

3. The rescue information recorder according to claim 2, characterized in that: The first audio processing circuit comprises: Transistor Q1, the base of the transistor Q1 is connected to the audio signal output end of the first microphone through the capacitor C1, the base of the transistor Q1 is also connected to the reference ground through the resistor R2, the base of the transistor Q1 is also connected to the power supply through the resistor R1, the emitter of the transistor Q1 is connected to the reference ground through the resistor R4, the collector of the transistor Q1 is connected to the power supply through the resistor R3, and the collector of the transistor Q1 is connected to the audio signal input end of the voice wake-up module.

4. The rescue information recorder according to claim 2 or 3, characterized in that: Also includes: A volume wake-up circuit, wherein the audio signal output end of the first audio processing circuit is connected to the signal input end of the volume wake-up circuit, the output end of the volume wake-up circuit is connected to the power supply end of the voice wake-up module, and the volume wake-up circuit is used to judge the volume of the audio signal output by the first audio processing circuit, and when the volume exceeds a set value, the voice wake-up module is powered on and controlled.

5. The rescue information recorder according to claim 4, characterized in that: The volume wake-up circuit comprises: A comparator U1, wherein a non-inverting input terminal of the comparator U1 is connected to an audio signal output terminal of the first audio processing circuit, and the comparator U1 is connected to a reference voltage input terminal; A transistor Q2, wherein the base of the transistor Q2 is connected to the output end of the comparator U1 through a resistor R7, the emitter of the transistor Q2 is connected to a reference ground, and the collector of the transistor Q2 is connected to a power supply through a resistor R8; MOS tube Q3, the gate of the MOS tube Q3 is connected to the collector of the triode Q2, the source of the MOS tube Q3 is connected to the power supply, and the drain of the MOS tube Q3 is connected to the power supply end of the voice wake-up module.

6. The rescue information recorder according to claim 5, characterized in that: The volume wake-up circuit further includes: a power supply holding circuit, which is used to hold the high-level state of the high-level signal output by the comparator U1 for a set time; the power supply holding circuit includes: A resistor R8, one end of which is connected to the output end of the comparator U1; Capacitor C2, one end of the capacitor C2 is connected to the other end of the resistor R8, and the other end of the capacitor C2 is connected to the reference ground.

7. The rescue information recorder according to claim 5 or 6, characterized in that: The power supply control circuit comprises: Transistor Q4, the base of the transistor Q4 is connected to the cathode of the diode D1 through the resistor R10, the anode of the diode D1 is connected to the power supply switching control terminal of the voice wake-up module, the base of the transistor Q4 is also connected to the cathode of the diode D2 through the resistor R10, the anode of the diode D2 is connected to the power supply maintenance control terminal of the voice recognition processor, the emitter of the transistor Q4 is connected to the reference ground, the collector of the transistor Q4 is connected to the anode of the diode D4, and the cathode of the diode D4 is connected to the power supply; A relay switch K1, wherein one end of the controlled side of the relay switch K1 is connected to the collector of the transistor Q4, the other end of the controlled side of the relay switch K1 is connected to the power supply, one end of the switch side of the relay switch K1 is connected to the source of the MOS tube Q3, the other end of the switch side of the relay switch K1 is connected to the power supply end of the speech recognition processor, and the common end of the switch side of the relay switch K1 is connected to the power supply output end.

8. The rescue information recorder according to claim 7, characterized in that: It also includes a wireless communication circuit, the wireless communication circuit is used to wirelessly connect to the server, and the power supply control circuit also includes: A transistor Q5, wherein the base of the transistor Q5 is connected to the power supply control terminal of the speech recognition processor through a resistor R17, the emitter of the transistor Q5 is connected to the reference ground, and the collector of the transistor Q5 is connected to the other end of the switch side of the relay switch K1 through a resistor R16; MOS transistor Q6, the gate of the MOS transistor Q6 is connected to the collector of the transistor Q5, the source of the MOS transistor Q6 is connected to the other end of the switch side of the relay switch K1, and the power supply of the wireless communication circuit is electrically connected.

9. The rescue information recorder according to claim 8, characterized in that: Also includes: A power conversion circuit, the power conversion circuit is connected to the battery and the power supply control circuit respectively, so as to convert the voltage of the power supply output by the battery and then control the output through the power supply control circuit; The power conversion circuit comprises: A power controller U3, wherein the input end of the power controller U3 is connected to the power output end of the battery, the conversion control end SW is connected to one end of the inductor L1, the other end of the inductor L1 is connected to the power input end of the power supply control circuit, and the power output end of the power controller U3 is also connected to the other end of the inductor L1; a resistor R12, one end of the resistor R12 being connected to the other end of the inductor L1; The resistor R13 has one end connected to the other end of the resistor R12, and the other end of the resistor R13 is connected to the reference ground.

10. The rescue information recorder according to claim 9, characterized in that: Also includes: an identification state indicating circuit, the identification state indicating circuit comprising a light emitting diode D3 and a resistor R15, wherein an anode of the diode D3 is connected to the other end of the switch side of the relay switch K1, a cathode of the light emitting diode D3 is connected to one end of the resistor R15, and the other end of the resistor R15 is connected to a reference ground; A storage circuit is connected to the speech recognition processor to store the speech data and the recognized text data under the action of the speech recognition processor.

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