Stringless Harp

Acoustics

★Exhibit Content: Photoelectric Signal Control ★Interaction: Electromechanical Interaction ★Operation: 1. Press the "Start" button; 2. Blocking a beam of light with your hand is equivalent to plucking a string. ★Exhibit Description: The exhibit consists of a shaped instrument, laser emitters, receivers, and a software system that controls sound. The laser emitting and receiving devices are installed inside the base and on the central cylinder. When visitors block the laser beam with their hands, the photoelectric control circuit is triggered, activating the audio circuit to play pleasant music. ★Scientific Principle: Blocking a beam of light with your hand is equivalent to plucking a string. It can play scales or melodies. Some substances in nature, when exposed to light, release electrons from their atoms, increasing the material's conductivity. Materials that originally have high resistance become much less resistant under illumination. This phenomenon is called the internal photoelectric effect. Photosensitive components made from such materials can control circuits.

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• 1.1*0.4*1.8m · Style 1 1.1*0.4*1.8m
  Dimensions (unit: m): 1.1*0.4*1.8m Brand: KexMall Model: PopsciCat-Acoustics-023 1. Main Materials ① Shaped base: 30*30*1.5mm rectangular tube welded frame + 1.2mm Q235 plate + automotive sheet metal baking paint, 1 set ② Instrument-shaped bracket: 1.2mm Q235 plate + wood board + automotive sheet metal baking paint, 1 set ③ Instruction sign, graphic panel: acrylic UV printing ④ Electrical control box: cold-rolled plate baking paint box, containing control circuit, switching power supply, circuit breaker, terminal blocks, etc. 2. Main Configurations ① Electrical control: electrical logic control system, equipped with Guanjian® K1 type PLC controller with protection specially for science exhibits ② Photoelectric switches (8 pcs): diffuse reflection photoelectric switches, adjustable distance 500 ③ Voice module: electronic keyboard voice module ④ Audio: 2.1 wooden subwoofer audio 3. Installation Requirements: ① Power requirement: AC100-240V, 50/60Hz 200w ② Installation base: directly placed, can be fixed with floor bolts ③ Entry passage: door frame size (width × height) ≧1.0m×2.1m, continuous turning interval ≧2.5m ④ Maintenance access: not required

  ★Exhibit Content: Photoelectric Signal Control ★Interaction: Electromechanical Interaction ★Operation: 1. Press the "Start" button; 2. Blocking a beam of light with your hand is equivalent to plucking a string. ★Exhibit Description: The exhibit consists of a shaped instrument, laser emitters, receivers, and a software system that controls sound. The laser emitting and receiving devices are installed inside the base and on the central cylinder. When visitors block the laser beam with their hands, the photoelectric control circuit is triggered, activating the audio circuit to play pleasant music. ★Scientific Principle: Blocking a beam of light with your hand is equivalent to plucking a string. It can play scales or melodies. Some substances in nature, when exposed to light, release electrons from their atoms, increasing the material's conductivity. Materials that originally have high resistance become much less resistant under illumination. This phenomenon is called the internal photoelectric effect. Photosensitive components made from such materials can control circuits.

• 1.1*1.0*1.8m 1.1*1.0*1.8m
  Dimensions (unit: m): 1.1*1.0*1.8m Brand: KexMall Model: PopsciCat-Acoustics-024 1. Main Materials ① Shaped base: 30*30*1.5mm rectangular tube welded frame + 1.2mm Q235 plate + automotive sheet metal baking paint, 1 set ② Instrument-shaped bracket: 1.2mm Q235 plate + automotive sheet metal baking paint, 1 set ③ Instruction sign, graphic panel: acrylic UV printing ④ Electrical control box: cold-rolled plate baking paint box, containing control circuit, switching power supply, circuit breaker, terminal blocks, etc. 2. Main Configurations ① Electrical control: electrical logic control system, equipped with Guanjian® K1 type PLC controller with protection specially for science exhibits ② Photoelectric switches (8 pcs): diffuse reflection photoelectric switches, adjustable distance 500 ③ Voice module: electronic keyboard voice module ④ Audio: 2.1 wooden subwoofer audio 3. Installation Requirements: ① Power requirement: AC100-240V, 50/60Hz 200w ② Installation base: directly placed ③ Entry passage: door frame size (width × height) ≧1.0m×2.1m, continuous turning interval ≧2.5m ④ Maintenance access: not required

  ★Exhibit Content: Photoelectric Signal Control ★Interaction: Electromechanical Interaction ★Operation: 1. Press the "Start" button; 2. Blocking a beam of light with your hand is equivalent to plucking a string. ★Exhibit Description: The exhibit consists of a shaped instrument, laser emitters, receivers, and a software system that controls sound. The laser emitting and receiving devices are installed inside the base and on the central cylinder. When visitors block the laser beam with their hands, the photoelectric control circuit is triggered, activating the audio circuit to play pleasant music. ★Scientific Principle: Blocking a beam of light with your hand is equivalent to plucking a string. It can play scales or melodies. Some substances in nature, when exposed to light, release electrons from their atoms, increasing the material's conductivity. Materials that originally have high resistance become much less resistant under illumination. This phenomenon is called the internal photoelectric effect. Photosensitive components made from such materials can control circuits.

• 1.1*0.4*1.8m · Style 2 1.1*0.4*1.8m
  Dimensions (unit: m): 1.1*0.4*1.8m Brand: KexMall Model: PopsciCat-Acoustics-025 1. Main Materials ① Shaped base: 30*30*1.5mm rectangular tube welded frame + 1.2mm Q235 plate + automotive sheet metal baking paint, 1 set ② Instrument-shaped bracket: 1.2mm Q235 plate + wood board + automotive sheet metal baking paint, 1 set ③ Instruction sign, graphic panel: acrylic UV printing ④ Electrical control box: cold-rolled plate baking paint box, containing control circuit, switching power supply, circuit breaker, terminal blocks, etc. 2. Main Configurations ① Electrical control: electrical logic control system, equipped with Guanjian® K1 type PLC controller with protection specially for science exhibits ② Photoelectric switches (8 pcs): diffuse reflection photoelectric switches, adjustable distance 500 ③ Voice module: electronic keyboard voice module ④ Audio: 2.1 wooden subwoofer audio 3. Installation Requirements: ① Power requirement: AC100-240V, 50/60Hz 200w ② Installation base: directly placed, can be fixed with floor bolts ③ Entry passage: door frame size (width × height) ≧1.0m×2.1m, continuous turning interval ≧2.5m ④ Maintenance access: not required

  ★Exhibit Content: Photoelectric Signal Control ★Interaction: Electromechanical Interaction ★Operation: 1. Press the "Start" button; 2. Blocking a beam of light with your hand is equivalent to plucking a string. ★Exhibit Description: The exhibit consists of a shaped instrument, laser emitters, receivers, and a software system that controls sound. The laser emitting and receiving devices are installed inside the base and on the central cylinder. When visitors block the laser beam with their hands, the photoelectric control circuit is triggered, activating the audio circuit to play pleasant music. ★Scientific Principle: Blocking a beam of light with your hand is equivalent to plucking a string. It can play scales or melodies. Some substances in nature, when exposed to light, release electrons from their atoms, increasing the material's conductivity. Materials that originally have high resistance become much less resistant under illumination. This phenomenon is called the internal photoelectric effect. Photosensitive components made from such materials can control circuits.

• 1.2*0.7*1.3m · Style 1 1.2*0.7*1.3m
  Dimensions (unit: m): 1.2*0.7*1.3m Brand: KexMall Model: PopsciCat-Acoustics-026 1. Main Materials ① Display stand, base frame: 30 square tube, 2.0mm cold-rolled plate enclosure, surface baking paint, Kelesi artificial stone countertop, thickness ≧12mm ② Instrument-shaped bracket: 1.5mm Q235 plate + baking paint, 1 set ③ Instruction sign, graphic panel: acrylic UV printing ④ Electrical control box: cold-rolled plate baking paint box, containing control circuit, switching power supply, circuit breaker, terminal blocks, etc. 2. Main Configurations ① Electrical control: electrical logic control system, equipped with Guanjian® K1 type PLC controller with protection specially for science exhibits ② Photoelectric switches (8 pcs): diffuse reflection photoelectric switches, adjustable distance 500 ③ Voice module: electronic keyboard voice module ④ Audio: 2.1 wooden subwoofer audio 3. Installation Requirements: ① Power requirement: AC100-240V, 50/60Hz 200w ② Installation base: directly placed ③ Entry passage: door frame size (width × height) ≧1.0m×2.1m, continuous turning interval ≧2.5m ④ Maintenance access: not required

  ★Exhibit Content: Photoelectric Signal Control ★Interaction: Electromechanical Interaction ★Operation: 1. Press the "Start" button; 2. Blocking a beam of light with your hand is equivalent to plucking a string. ★Exhibit Description: The exhibit consists of a display stand, shaped instrument, laser emitters, receivers, and a software system that controls sound. The laser emitting and receiving devices are installed inside the base and on the central cylinder. When visitors block the laser beam with their hands, the photoelectric control circuit is triggered, activating the audio circuit to play pleasant music. ★Scientific Principle: Blocking a beam of light with your hand is equivalent to plucking a string. It can play scales or melodies. Some substances in nature, when exposed to light, release electrons from their atoms, increasing the material's conductivity. Materials that originally have high resistance become much less resistant under illumination. This phenomenon is called the internal photoelectric effect. Photosensitive components made from such materials can control circuits.

• 1.2*0.7*1.3m · Style 2 1.2*0.7*1.3m
  Dimensions (unit: m): 1.2*0.7*1.3m Brand: KexMall Model: PopsciCat-Acoustics-027 1. Main Materials ① Display stand, base frame: 30 square tube, 2.0mm cold-rolled plate enclosure, surface baking paint, Kelesi artificial stone countertop, thickness ≧12mm ② Instrument-shaped bracket: 1.5mm Q235 plate + baking paint, 1 set ③ Instruction sign, graphic panel: acrylic UV printing ④ Electrical control box: cold-rolled plate baking paint box, containing control circuit, switching power supply, circuit breaker, terminal blocks, etc. 2. Main Configurations ① Electrical control: electrical logic control system, equipped with Guanjian® K1 type PLC controller with protection specially for science exhibits ② Photoelectric switches (8 pcs): diffuse reflection photoelectric switches, adjustable distance 500 ③ Voice module: electronic keyboard voice module ④ Audio: 2.1 wooden subwoofer audio 3. Installation Requirements: ① Power requirement: AC100-240V, 50/60Hz 200w ② Installation base: directly placed ③ Entry passage: door frame size (width × height) ≧1.0m×2.1m, continuous turning interval ≧2.5m ④ Maintenance access: not required

  ★Exhibit Content: Photoelectric Signal Control ★Interaction: Electromechanical Interaction ★Operation: 1. Press the "Start" button; 2. Blocking a beam of light with your hand is equivalent to plucking a string. ★Exhibit Description: The exhibit consists of a display stand, shaped instrument, laser emitters, receivers, and a software system that controls sound. The laser emitting and receiving devices are installed inside the base and on the central cylinder. When visitors block the laser beam with their hands, the photoelectric control circuit is triggered, activating the audio circuit to play pleasant music. ★Scientific Principle: Blocking a beam of light with your hand is equivalent to plucking a string. It can play scales or melodies. Some substances in nature, when exposed to light, release electrons from their atoms, increasing the material's conductivity. Materials that originally have high resistance become much less resistant under illumination. This phenomenon is called the internal photoelectric effect. Photosensitive components made from such materials can control circuits.

Review

Principle Display: ★★★★★ Interaction Effect: ★★★★ Ease of Installation: ★★★★ Durability: ★★★★ Overall Rating: ★★★★

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