CN105551356A - Sound control digestion demonstration system used for teaching - Google Patents

Abstract

A voice-activated digestion demonstration system for teaching, belonging to the technical field of teaching aids, including a human body model shell and a circuit control board. The beneficial effects of the present invention are: demonstration image, the present invention controls the DSP circuit through the combination of the human body model shell and the circuit control board Mode switch K3, mouth jog switch, esophageal jog switch, stomach jog switch, duodenum jog switch, liver jog switch, pancreas jog switch, small intestine jog switch, cecum jog switch and anal jog switch The tube jogs the switch to realize the sound, light, electricity and other ways to vividly demonstrate the process of food digestion through the digestive tract. The control is convenient, and the present invention only needs to control the mode switch K3 in the DSP circuit to select manual and automatic demonstration of the working process of the entire digestive system. It is easy to carry, and the power supply mode can be switched by operating the power mode switch K2, which can be powered by dry batteries or by mains power.

Description

Voice-activated digestion demonstration system for teaching

technical field

The invention belongs to the technical field of teaching aids, in particular to a voice-activated digestion demonstration system for teaching.

Background technique

At present, in the field of medical teaching, medical teaching aids can directly reflect the whole process of human body activities, and play an important guiding role for learners to understand and master relevant knowledge points. In the field of gastroenterology, especially, the existing teaching aids cannot demonstrate the whole process of food digestion concretely and visually, and cannot enable learners to understand and recognize the whole process of food digestion.

Contents of the invention

The technical problem to be solved by the present invention is to provide a design method of a space station dynamics and control experiment platform for the above-mentioned deficiencies in the background technology. The present invention aims at the above problems and provides a digestive system demonstration teaching aid with good demonstration effect, convenient control, two demonstration modes, direct power supply by batteries, simple structure and portability.

In order to achieve the above object, the present invention adopts the following technical solutions. The present invention includes a human body model casing and a circuit control board, and the circuit control board is arranged in the human body model casing, wherein the human body model casing includes an oral cavity organ model, an esophageal organ model, a gastric organ model model, organ model of duodenum, organ model of liver, organ model of pancreas, organ model of small intestine, organ model of cecum and organ model of anal canal;

The above-mentioned organ models are sequentially connected according to the physiological structure of the human digestive tract;

The circuit control board includes a power module, a DSP circuit, an oral jog switch, an oral cavity demonstration light LED1, an esophageal jog switch, an esophagus demonstration light LED2, a stomach jog switch, a stomach demonstration light LED3, and a duodenal jog switch , Duodenum demo light LED4, liver jog switch, liver demo light LED5, pancreas jog switch, pancreas demo light LED6, small intestine jog switch, small intestine demo light LED7, cecum jog switch, cecum demo light LED8, anus Tube jog switch, anal canal demonstration lamp LED9, manual stop switch, first limit demonstration unit and second limit demonstration unit;

Its structure is in the mouth jog switch, esophagus jog switch, stomach jog switch, duodenum jog switch, liver jog switch, pancreas jog switch, small intestine jog switch, cecum jog switch and anal canal A manual stop switch is set at the moving switch, the output end of the power module is connected to the input end of the oral jog switch, the output end of the oral jog switch is connected to the input end of the oral demonstration light LED1, and the output end of the oral demonstration light LED1 is respectively connected to the The input end of the esophagus jog switch and the input pin in the DSP circuit, the output end of the esophagus jog switch is connected to the input end of the esophagus demonstration light LED2, and the output end of the esophagus demonstration light LED2 is respectively connected to the input end of the stomach jog switch and the DSP The input pin in the circuit, the output end of the stomach jog switch is connected to the input end of the stomach demonstration lamp LED3, the output end of the stomach demonstration lamp LED3 is connected to the input end of the duodenum jog switch and the input pin in the DSP circuit, The output end of the duodenum jog switch is connected to the input end of the duodenum demonstration light, and the output end of the duodenum demonstration light is connected to the input end of the liver jog switch and the input pin in the DSP circuit, and the liver jog switch The output end of the switch is connected to the input end of the liver demonstration light LED5, the output end of the liver demonstration light LED5 is connected to the input pin of the DSP circuit of the pancreas inching switch, and the output end of the pancreas inching switch is connected to the input of the pancreas demonstration light LED6 The output end of the pancreas demonstration light LED6 is respectively connected to the input end of the small intestine jog switch and the input pin in the DSP circuit, the output end of the small intestine jog switch is connected to the input end of the small intestine demonstration light LED7, and the output end of the small intestine demonstration light LED7 Connect the input end of the cecum jog switch and the input pin in the DSP circuit respectively, the output end of the cecum jog switch is connected to the input end of the cecum demonstration light LED8, and the output end of the cecum demonstration light LED8 is respectively connected to the anal canal jog switch The input end and the input pin in the DSP circuit, the output end of the anal canal jog switch is connected to the input end of the anal canal demonstration light LED9, and the output end of the anal canal demonstration light LED9 is respectively connected to the negative pole of the power module and the input tube in the DSP circuit Foot, the first limit demonstration unit is respectively set at the entrance of oral cavity organ model, esophagus organ model, stomach organ model, duodenum organ model, small intestine organ model, cecum organ model and anal canal organ model, the second limit Demonstration units are respectively set at the entrances of the liver organ model and the pancreas organ model.

The organ models are connected sequentially according to the physiological structure of the human digestive tract. Specifically, the lower outlet of the oral organ model is connected to the upper inlet of the esophagus organ model, the lower outlet of the esophagus organ model is connected to the upper inlet of the gastric organ model, and the lower outlet of the gastric organ model is connected to ten The upper inlet of the duodenum organ model, the lower outlet of the duodenum organ model are connected to the upper inlet of the liver organ model, the lower outlet of the liver organ model is connected to the upper inlet of the pancreas organ model, and the lower outlet of the pancreas organ model is connected to the small intestine organ model The upper end inlet of the small intestine organ model is connected to the upper end inlet of the cecum organ model, and the lower end outlet of the cecum organ model is connected to the upper end inlet of the anal canal organ model.

The above-mentioned mouth jog switch and oral cavity demonstration light LED1 are installed in the oral cavity organ model, the esophagus jog switch and esophagus demonstration light LED2 are installed in the esophagus organ model, and the stomach jog switch and stomach demonstration light LED3 are installed in the stomach organ model Inside, the duodenum jog switch and duodenum demonstration lamp LED4 are installed in the duodenum organ model, the liver jog switch and liver demonstration lamp LED5 are installed in the liver organ model, the pancreas jog switch and pancreas demonstration The light LED6 is installed in the pancreas organ model, the small intestine jog switch and the small intestine demonstration lamp LED7 are installed in the small intestine organ model, the cecum jog switch and the cecum demonstration light LED8 are installed in the cecum organ model, the anal canal jog switch and the anal canal demonstration Light LED9 is installed in the anal canal organ model.

The first limit demonstration unit includes a baffle, a spring and a pull ring, wherein the spring is connected to the pull ring, and the baffle is arranged on the spring.

The section of the pull ring is V-shaped.

The second limit demonstration unit includes a key switch and a demonstration light, wherein the key switch is connected to the demonstration light to control the switch of the demonstration light; the demonstration light is the liver demonstration light LED5 or the pancreas demonstration light LED6.

The DSP circuit is embedded with a sounding module, which can play voices to explain the functions of related organ models.

The sound module is an MP3 player.

The described organ model is lined with water pattern paper.

The described organ model adopts a silicone shell.

Beneficial effects of the present invention:

1. Demonstration image

The present invention controls the mode switch K3, mouth jog switch, esophagus jog switch, stomach jog switch, duodenum jog switch, and liver jog switch in the DSP circuit through the combination of the human body model shell and the circuit control board. , pancreas jog switch, small intestine jog switch, cecum jog switch and anal canal jog switch, realize the sound, light, electricity and other ways to vividly demonstrate the process of food digestion through the digestive tract.

2. Easy to control

The present invention only needs to control the mode switch K3 in the DSP circuit to select manual and automatic demonstration of the working process of the whole digestive system.

3. Easy to carry

The power supply mode can be switched by operating the power supply mode switch K2, which can be powered by dry batteries or by commercial power.

Description of drawings

Fig. 1 is the schematic diagram of the shell structure of the human body model of the present invention;

Fig. 2 is a schematic block diagram of the circuit control board of the present invention;

Fig. 3 is the power module of the present invention;

Fig. 4 is the power supply circuit in the DSP circuit of the present invention;

Fig. 5 is the FLASH memory module circuit diagram in the DSP circuit of the present invention;

Fig. 6 is DSP circuit and LED wiring circuit of the present invention;

Fig. 7 is a schematic structural diagram of the first limit demonstration unit of the present invention;

In the figure: 1 Oral organ model, 2 Esophagus organ model, 3 Stomach organ model, 4 Duodenum organ model, 5 Liver organ model, 6 Pancreas organ model, 7 Small intestine organ model, 8 Cecum organ model, 9 Anal organ model Model, 10 baffles, 11 springs, 12 pull rings.

The present invention will be further described in detail below in conjunction with the accompanying drawings through examples, but the following examples are only examples of the present invention, and do not represent the limited scope of rights protection of the present invention, and the scope of protection of rights of the present invention is defined by the claims allow.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

The present invention includes a mannequin shell and a circuit control board, as shown in Figure 1, wherein the mannequin shell includes an oral cavity organ model 1, an esophagus organ model 2, a stomach organ model 3, a duodenum organ model 4, and a liver organ model 5. Pancreatic organ model 6, small intestine organ model 7, cecum organ model 8 and anal canal organ model 9;

The above-mentioned organ models are sequentially connected according to the physiological structure of the human digestive tract;

The organ models are connected sequentially according to the physiological structure of the human digestive tract, specifically, the outlet at the lower end of the oral cavity organ model 1 is connected to the upper entrance of the esophagus organ model 2, the outlet at the lower end of the esophagus organ model 2 is connected to the upper entrance of the stomach organ model 3, and the stomach organ model 3 The lower end outlet of the duodenum organ model 4 is connected to the upper end inlet of the duodenum organ model 4, the lower end outlet of the duodenum organ model 4 is connected to the upper end inlet of the liver organ model 5, and the lower end outlet of the liver organ model 5 is connected to the upper end inlet of the pancreas organ model 6, The lower outlet of the pancreas organ model 6 is connected to the upper inlet of the small intestine organ model 7, the lower outlet of the small intestine organ model 7 is connected to the upper inlet of the cecum organ model 8, and the lower outlet of the cecum organ model 8 is connected to the upper inlet of the anal canal organ model 9.

As shown in Figure 2, the DSP in this embodiment uses a low-power DSP model TMS320VC5416, the output end of the power module is connected to the input end of the oral jog switch, and the output end of the oral jog switch is connected to the oral demonstration light LED1 The input end, the output end of the oral demonstration light LED1 is connected to the input end of the esophageal inching switch and the A20 pin of TMS320VC5416 in the DSP circuit, the output end of the esophageal inching switch is connected to the input end of the esophageal demonstration light LED2, and the esophageal demonstration light LED2 The output end is connected to the input end of the stomach jog switch and the A19 pin of TMS320VC5416 in the DSP circuit, the output end of the stomach jog switch is connected to the stomach demonstration lamp LED3, and the output end of the stomach demonstration lamp LED3 is connected to the duodenum jog switch The input terminal and the A18 pin of TMS320VC5416 in the DSP circuit, the output terminal of the duodenum inching switch is connected to the input terminal of the duodenum demonstration lamp, and the output terminal of the duodenum demonstration lamp is connected to the input of the liver inching switch terminal and the A17 pin of TMS320VC5416 in the DSP circuit, the output terminal of the liver jog switch is connected to the input terminal of the liver demonstration light LED5 and the output terminal of the liver demonstration light LED5 is connected to the input terminal of the pancreatic jog switch of TMS320VC5416 in the DSP circuit Pin A16, the output end of the pancreas jog switch is connected to the input end of the pancreas demonstration light LED6, the output end of the pancreas demonstration light LED6 is connected to the input end of the small intestine jog switch and the A15 pin of TMS320VC5416 in the DSP circuit, the small intestine jog switch The output end of the small intestine demonstration light LED7 is connected to the input end, the output end of the small intestine demonstration light LED7 is connected to the input end of the cecum jog switch and the A14 pin of TMS320VC5416 in the DSP circuit, and the output end of the cecum jog switch is connected to the cecum demonstration light LED8 The input end of the cecum demonstration light LED8 is connected to the input end of the anal canal jog switch and the A13 pin of TMS320VC5416 in the DSP circuit, and the output end of the anal canal jog switch is connected to the input end of the anal canal demonstration light LED9. The output end of the anal canal demonstration light LED9 is connected to the negative pole of the power supply module and the A12 pin of TMS320VC5416 in the DSP circuit.

As shown in Figure 3, the live wire of the mains 220V in the power module is connected to the input end of the normally open contact of the main switch K1, and the output end of the normally open contact of the main switch K1 is connected to the normally closed contact K2 of the power mode switch K2 , the input terminal of the power mode switch K2 normally closed contact K2, the output terminal of the single-phase rectifier bridge is connected to the input terminal of the single-phase rectifier bridge, and the neutral line input terminal of the single-phase rectifier bridge is connected to the neutral line of the mains. The positive pole of the dry battery is connected to the input terminal of the normally open contact of the power mode switch K2, and the output terminal of the normally open contact of the power mode switch K2 is connected to the positive pole of the positive pole output terminal of the single-phase rectifier bridge, and the positive pole of the output terminal of the single-phase rectifier bridge is connected to the power supply The output end of the normally open contact of the mode switch K2 is connected in parallel to the input end of the normally open contact of the main switch K1, and the negative pole of the dry battery is connected to the negative pole of the single-phase rectifier bridge.

As shown in Figure 4, in this DSP circuit design, we use low-power DSP model TMS320VC5416, power management uses TPS70348, D/A conversion, speaker and other conventional circuit models and their wiring will not be repeated. The DSP circuit contains a power supply circuit. In this design, we use the low-power DSP model TMS320VC5416, and the power management uses TPS70348. The rest of the D/A conversion, speaker and other conventional circuits and their wiring will not be repeated. The Vout1 pin of TPS70348 is connected to the VDD pin of TMS320VC5416 as the power input of TMS320VC5416.

As shown in Figure 5, the DSP circuit contains the FLASH memory module CONAT62B. DQ7-DQ0 of CONAT62B is used as a parallel port data bus to connect to D0-D8 of TMS320VC5416, and A0-A18 of CONAT62B is used as an address bus to connect to A0-A18 of TMS320VC5416. Conventional circuit wiring such as crystal oscillator, reset, speaker, etc. will not be repeated here.

As shown in Figure 6, the DSP circuit contains the DSP chip TMS320VC5416, the A20 pin of the TMS320VC5416 chip is connected to the output end of LED1, the A19 pin of the TMS320VC5416 chip is connected to the output end of LED2, and the A18 pin of the TMS320VC5416 chip is connected to the output end of LED3. The A17 pin of the TMS320VC5416 chip is connected to the output end of LED4, the A16 pin of the TMS320VC5416 chip is connected to the output end of LED5, the A15 pin of the TMS320VC5416 chip is connected to the output end of LED6, the A14 pin of the TMS320VC5416 chip is connected to the output end of LED7, the TMS320VC5416 chip The A13 pin of the LED8 is connected to the output end of LED8, the A12 pin of the TMS320VC5416 chip is connected to the output end of LED9, and the output end of the mode switch K3 is connected to the A11 pin of the TMS320VC5416 chip.

As shown in Figure 7, the first limit demonstration unit includes a baffle 10, a spring 11 and a pull ring 12, wherein the spring 11 is connected to the pull ring 12, the baffle 10 is arranged on the spring 11, and the simulated food falls behind the flap, The operator can pull the pull ring 12, and then drive the spring 11 to contract, so that the baffle 10 falls, and the simulated food enters the next simulated digestion process, and the spring 11 can automatically return the baffle 10 to its position.

As shown in Figures 1 and 7, the simulated food enters the teaching aid through the arrow, and walks in the simulated digestive tract according to the flow of the human digestive system.

The working process of the present invention: when the power mode switch K2 is on, the mains supply power to the system, and when the power mode switch K2 is on, the dry battery supplies power to the system. After the power mode switch is operated as required, the main switch K1 is closed and the system is powered on.

The process of manual demonstration mode is as follows: use a table tennis ball to simulate food, put the table tennis ball into the mouth, close the mode switch K3 after the system is powered on, the A11 pin of the TMS320VC5416 in the DSP circuit receives a high level signal, and the software that has been programmed into the TMS320VC5416 Enter the manual demonstration mode, simulate the passage of food, close the mouth jog switch, LED1 lights up, the DSP circuit plays the oral voice introduction, pull the ring 12, the spring 11 shrinks and pulls the baffle 10 to fall, and the simulated food continues to follow the established route to the esophagus. The simulated food closes the esophagus jog switch, LED2 lights up, the DSP circuit plays the voice introduction of the esophagus, pulls the pull ring 12, the spring 11 shrinks and pulls the baffle 10 to fall, the simulated food continues to the stomach along the established route, and the simulated food moves through the closed stomach Switch, LED3 is on, the DSP circuit plays stomach voice introduction, pulls the pull ring 12, the spring 11 shrinks and pulls the baffle 10 to fall, the simulated food continues to the duodenum along the established route, and the simulated food passes through the closed duodenum jog switch , LED4 lights up, the DSP circuit plays the voice introduction of the duodenum, manually closes the jog switch of the liver, LED5 lights up, the DSP circuit plays the voice introduction of the liver, manually closes the pancreas jog switch, LED6 lights up, the DSP circuit plays the voice introduction of the pancreas, and pulls it open Pull ring 12, spring 11 shrinks and pulls baffle 10 to fall, the simulated food continues to follow the established route to the small intestine, the simulated food passes through the small intestine jog switch, LED7 lights up, the DSP circuit plays the voice introduction of the small intestine, and the simulated food continues to follow the established route to the cecum, The simulated food passes through the closed cecum jog switch, LED8 lights up, the DSP circuit plays the voice introduction of the cecum, the simulated food continues along the established route to the anal canal, the simulated food passes through the closed anal canal jog switch, LED9 lights up, the DSP circuit plays the voice introduction of the anal canal, Since food does not pass through the liver and pancreas, at the liver and pancreas, it is necessary to start the second limit demonstration unit, press the button switch, turn on the speaker, and the speaker broadcasts the main functions of the liver and pancreas.

The process of the automatic demonstration mode is: use a table tennis ball to simulate food, put the table tennis ball into the mouth, disconnect the manual and automatic mode switch K3 after the system is powered on, the A11 pin of the TMS320VC5416 in the DSP circuit receives a low-level signal, and the TMS320VC5416 in the DSP circuit has already The programmed software enters the automatic play mode and is no longer affected by oral jog switch, esophageal jog switch, stomach jog switch, duodenum jog switch, liver jog switch, pancreas jog switch, small intestine jog switch, The control of the cecum jog switch and the anal canal jog switch automatically plays the whole voice to introduce the main functions and working principles of each organ.

Claims (10)

1. a teaching acoustic control digests demo system, include manikin housing and circuit control panel, circuit control panel is arranged in manikin housing, it is characterized in that: wherein manikin housing comprises oral cavity organs model (1), esophagus organ model (2), stomach organ model (3), duodenum organ model (4), liver organ model (5), pancreas organ model (6), small intestine organ model (7), caecum organ model (8) and anal tube organ model (9);

Described above-mentioned organ model is linked in sequence successively according to human body alimentary canal physiological structure;

Described circuit control panel comprises power module, DSP circuit, oral cavity point driving switch, oral cavity demonstration lamp, oesophagus point driving switch, oesophagus demonstration lamp, stomach point driving switch, stomach demonstration lamp, duodenum point driving switch, duodenum demonstration lamp, liver point driving switch, liver demonstration lamp, pancreas point driving switch, pancreas demonstration lamp, small intestine point driving switch, small intestine demonstration lamp, caecum point driving switch, caecum demonstration lamp, anal tube point driving switch, anal tube demonstration lamp, manual shutdown switch, first spacing demonstration unit and the second spacing demonstration unit,

Its structure is at oral cavity point driving switch, oesophagus point driving switch, stomach point driving switch, duodenum point driving switch, liver point driving switch, pancreas point driving switch, small intestine point driving switch, caecum point driving switch and anal tube point driving switch place all arrange a manual shutdown switch, the output terminal of power module connects the input end of oral cavity point driving switch, the output terminal of oral cavity point driving switch connects the input end of sense oral cavity demonstration lamp, the output terminal of oral cavity demonstration lamp connects the input pin in the input end of oesophagus point driving switch and DSP circuit respectively, the output terminal of oesophagus point driving switch connects the input end of oesophagus demonstration lamp, the output terminal of oesophagus demonstration lamp connects the input pin in the input end of stomach point driving switch and DSP circuit respectively, the output terminal of stomach point driving switch connects the input end of stomach demonstration lamp, the output terminal of stomach demonstration lamp connects the input pin in the input end of duodenum point driving switch and DSP circuit, the output terminal of duodenum point driving switch connects the input end of duodenum demonstration lamp, the output terminal of duodenum demonstration lamp connects the input pin in the input end of liver point driving switch and DSP circuit, the output terminal of liver point driving switch connects the input end of liver demonstration lamp, the output terminal of liver demonstration lamp connects the input pin in the input end DSP circuit of pancreas point driving switch, the output terminal of pancreas point driving switch connects the input end of pancreas demonstration lamp, the output terminal of pancreas demonstration lamp connects the input pin in the input end of small intestine point driving switch and DSP circuit respectively, the output terminal of small intestine point driving switch connects the input end of small intestine demonstration lamp, the output terminal of small intestine demonstration lamp connects the input pin in the input end of caecum point driving switch and DSP circuit respectively, the output terminal of caecum point driving switch connects the input end of caecum demonstration lamp, the defeated place end of caecum demonstration lamp connects the input pin in the input end of anal tube point driving switch and DSP circuit respectively, the output terminal of anal tube point driving switch connects the input end of anal tube demonstration lamp, the output terminal of anal tube demonstration lamp connects the input pin in the negative pole of power module and DSP circuit respectively, first spacing demonstration unit is separately positioned on oral cavity organs model, esophagus organ model, stomach organ model, duodenum organ model, small intestine organ model, the porch of caecum organ model and anal tube organ model, second spacing demonstration unit is separately positioned on the porch of liver organ model and pancreas organ model.

2. teaching acoustic control according to claim 1 digests demo system, it is characterized in that: described organ model is linked in sequence successively according to human body alimentary canal physiological structure and is specially the upper end entrance in oral cavity organs model (1) lower end outlet connection esophagus organ model (2), the lower end outlet of esophagus organ model (2) connects the upper end entrance of stomach organ model (3), the lower end outlet of stomach organ model (3) connects the upper end entrance of duodenum organ model (4), the lower end outlet of duodenum organ model (4) connects the upper end entrance of liver organ model (5), the lower end outlet of liver organ model (5) connects the upper end entrance of pancreas organ model (6), the lower end outlet of pancreas organ model (6) connects the upper end entrance of small intestine organ model (7), the lower end outlet of small intestine organ model (7) connects the upper end entrance of caecum organ model (8), the lower end outlet of caecum organ model (8) connects the upper end entrance of anal tube organ model (9).

3. teaching acoustic control according to claim 1 digests demo system, it is characterized in that: described above-mentioned oral cavity point driving switch and oral cavity demonstration lamp are arranged in oral cavity organs model (1), esophagus point driving switch and esophagus demonstration lamp are arranged in esophagus organ model (2), stomach point driving switch and stomach demonstration lamp are arranged in stomach organ model (3), duodenum point driving switch and duodenum demonstration lamp are arranged in duodenum organ model (4), liver point driving switch and liver demonstration lamp are arranged in liver organ model (5), pancreas point driving switch and pancreas demonstration lamp are arranged in pancreas organ model (6), small intestine point driving switch and small intestine demonstration lamp are arranged in small intestine organ model (7), caecum point driving switch and caecum demonstration lamp are arranged in caecum organ model (8), anal tube point driving switch and anal tube demonstration lamp are arranged in anal tube organ model (9).

4. teaching acoustic control according to claim 1 digests demo system, it is characterized in that: the described first spacing demonstration unit comprises baffle plate (10), spring (11) and draw ring (12), wherein spring (11) is connected with draw ring (12), and baffle plate (10) is arranged on spring (11).

5. teaching acoustic control according to claim 3 digests demo system, it is characterized in that: described draw ring (12) cross section is V-shaped.

6. teaching acoustic control according to claim 1 digests demo system, it is characterized in that: the described second spacing demonstration unit comprises keyswitch and demonstration lamp, and wherein keyswitch connects demonstration lamp, controls the switch of demonstration lamp; Described demonstration lamp is liver demonstration lamp or pancreas demonstration lamp.

7. teaching acoustic control according to claim 1 digests demo system, it is characterized in that: the embedded sounding module of described DSP circuit, can play speech sound eeplaining and to be correlated with the function of organ model.

8. teaching acoustic control according to claim 6 digests demo system, it is characterized in that: described sounding module is MP3 player.

9. teaching acoustic control according to claim 1 digests demo system, it is characterized in that: described organ model liner water wave paper.

10. teaching acoustic control according to claim 1 digests demo system, it is characterized in that: described organ model adopts silica gel shell.